Owner’s Manual
Installation and Operation
Models:
GDST3831I
NOTICE
DO NOT DISCARD THIS MANUAL
• Important operating
and maintenance
instructions included.
• Read, understand and follow
these instructions for safe
installation and operation.
• Leave this manual with
party responsible for use
and operation.
WARNING
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury, or death.
HOT SURFACES!
Glass and other surfaces are hot during
operation AND cool down.
Hot glass will cause burns.
• DO NOT touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• DO NOT store or use gasoline or other flam-
mable vapors and liquids in the vicinity of this
or any other appliance.
• CAREFULLY SUPERVISE children in same room as
fireplace.
• Alert children and adults to hazards of high temperatures.
• What to do if you smell gas
- DO NOT try to light any appliance.
High temperatures may ignite clothing or other flammable
materials.
• Keep clothing, furniture, draperies and other flammable
materials away.
- DO NOT touch any electrical switch. DO
NOT use any phone in your building.
- Immediately call your gas supplier from a
neighbor’s phone. Follow the gas suppli-
er’s instructions.
This appliance has been supplied with an integral barrier
to prevent direct contact with the fixed glass panel. DO
NOT operate the appliance with the barrier removed.
- If you cannot reach your gas supplier, call
Contact your dealer or Hearth & Home Technologies if the
barrier is not present or help is needed to properly install one.
the fire department.
• Installation and service must be performed
by a qualified installer, service agency, or the
gas supplier.
In the Commonwealth of Massachusetts installation must be
performed by a licensed plumber or gas fitter.
See Table of Contents for location of additional Commonwealth
of Massachusetts requirements.
This appliance may be installed as an OEM installation in
manufactured home (USA only) or mobile home and must be
installed in accordance with the manufacturer’s instructions
and the manufactured home construction and safety standard,
Title 24 CFR, Part 3280 or Standard for Installation in Mobile
Homes, CAN/CSA Z240MH, in Canada.
Installation and service of this appliance should be
performed by qualified personnel. Hearth & Home
Technologies suggests NFI certified or factory trained
professionals, or technicians supervised by an NFI
certified professional.
This appliance is only for use with the type(s) of gas indicated
on the rating plate.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
1
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
Table of Contents
A. Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
B. Limited Lifetime Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . 5
6 Termination Locations
A. Vent Termination Minimum Clearances . . . . . . . . . . . . . . 21
B. Continue Adding Vent Components . . . . . . . . . . . . . . . . . 23
C. Install Support Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1 Listing and Code Approvals
A. Appliance Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
B. Tempered Glass Specifications . . . . . . . . . . . . . . . . . . . . . 7
C. BTU Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
D. High Altitude Installations. . . . . . . . . . . . . . . . . . . . . . . . . . 7
E. Non-Combustible Materials Specification. . . . . . . . . . . . . . 7
F. Combustible Materials Specification . . . . . . . . . . . . . . . . . 7
G. Electrical Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
H. Requirements for the Commonwealth of Massachusetts. . 8
7 Vent Information and Diagrams
A. Approved Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
B. Vent Table Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
C. Use of Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
D. Measuring Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
E. Use of Flex Vent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
F. Vent Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
User Guide
8 Vent Clearances and Framing
A. Pipe Clearances to Combustibles . . . . . . . . . . . . . . . . . . 31
B. Wall Penetration Framing. . . . . . . . . . . . . . . . . . . . . . . . . 31
C. Install the Ceiling Firestop . . . . . . . . . . . . . . . . . . . . . . . . 32
D. Install Attic Insulation Shield. . . . . . . . . . . . . . . . . . . . . . . 33
2 Operating Instructions
A. Gas Fireplace Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
B. Your Fireplace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
C. Fan Kit (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
D. Clear Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
E. Decorative Doors and Fronts . . . . . . . . . . . . . . . . . . . . . . 10
F. Fixed Glass Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
G. Remote Controls, Wall Controls and Wall Switches. . . . . 10
H. Before Lighting Fireplace . . . . . . . . . . . . . . . . . . . . . . . . . 10
I. Lighting Instructions (IPI) . . . . . . . . . . . . . . . . . . . . . . . . . 11
J. After Fireplace is Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
K. Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . . . 12
9 Appliance Preparation
A. Securing and Leveling the Appliance. . . . . . . . . . . . . . . . 34
10 Installing Vent Pipe
A. Assemble Vent Sections. . . . . . . . . . . . . . . . . . . . . . . . . . 35
B. Assemble Slip Sections . . . . . . . . . . . . . . . . . . . . . . . . . . 36
C. Securing the Vent Sections . . . . . . . . . . . . . . . . . . . . . . . 36
D. Disassemble Vent Sections . . . . . . . . . . . . . . . . . . . . . . . 37
E. Installing Decorative Ceiling Components . . . . . . . . . . . . 37
F. Installing Metal Roof Flashing . . . . . . . . . . . . . . . . . . . . . 38
G. Assemble and Install Storm Collar. . . . . . . . . . . . . . . . . . 38
H. Installing Vertical Termination Cap . . . . . . . . . . . . . . . . . . 39
I. Installing Decorative Wall Components . . . . . . . . . . . . . . 39
J. Heat Shield Requirements for Horizontal Termination . . . 39
K. Install Horizontal Termination Cap . . . . . . . . . . . . . . . . . . 40
3 Maintenance and Service
A. Maintenance Tasks-Homeowner . . . . . . . . . . . . . . . . . . . 13
B. Maintenance Tasks-Qualified Service Technician . . . . . . 14
Installer Guide
4 Getting Started
A. Typical Appliance System. . . . . . . . . . . . . . . . . . . . . . . . . 16
B. Design and Installation Considerations . . . . . . . . . . . . . . 17
C. Tools and Supplies Needed . . . . . . . . . . . . . . . . . . . . . . . 17
D. Inspect Appliance and Components. . . . . . . . . . . . . . . . . 17
11 Gas Information
A. Fuel Conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
B. Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
C. Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
D. High Altitude Installations. . . . . . . . . . . . . . . . . . . . . . . . . 41
5 Framing and Clearances
A. Selecting Appliance Location . . . . . . . . . . . . . . . . . . . . . . 18
B. Constructing the Appliance Chase. . . . . . . . . . . . . . . . . . 19
C. Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
D. Mantel and Wall Projections. . . . . . . . . . . . . . . . . . . . . . . 20
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
3
12 Electrical Information
A. Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
B. Intellifire Ignition System Wiring. . . . . . . . . . . . . . . . . . . . 42
C. Optional Accessories Requirements . . . . . . . . . . . . . . . . 42
D. Electrical Service and Repair. . . . . . . . . . . . . . . . . . . . . . 42
E. Junction Box Installation. . . . . . . . . . . . . . . . . . . . . . . . . . 44
F. Wall Switch Installation for Fan (Optional) . . . . . . . . . . . . 44
13 Finishing
A. Mantel and Wall Projections. . . . . . . . . . . . . . . . . . . . . . . 45
B. Facing Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C. Splatter Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
14 Appliance Setup
A. Remove Fixed Glass Assembly . . . . . . . . . . . . . . . . . . . . 48
B. Remove the Shipping Materials . . . . . . . . . . . . . . . . . . . . 48
C. Clean the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
D. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
E. Lava Rock, Mystic Embers and Glowing Ember
Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
F. Install the Log Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 49
G. Fixed Glass Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
H. Install Trim Kits and Surrounds . . . . . . . . . . . . . . . . . . . . 51
I. Air Shutter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
15 Troubleshooting
A. Intellifire Ignition System . . . . . . . . . . . . . . . . . . . . . . . . . 52
16 Reference Materials
A. Appliance Dimension Diagram. . . . . . . . . . . . . . . . . . . . . 54
B. Vent Components Diagrams . . . . . . . . . . . . . . . . . . . . . . 55
C. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
D. Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
= Contains updated information.
4
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
B. Limited Lifetime Warranty
Hearth & Home Technologies Inc.
LIMITED LIFETIME WARRANTY
Hearth & Home Technologies Inc., on behalf of its hearth brands (”HHT”), extends the following warranty for
HHT gas, wood, pellet, coal and electric hearth appliances that are purchased from an HHT authorized dealer.
WARRANTY COVERAGE:
HHT warrants to the original owner of the HHT appliance at the site of installation, and to any transferee taking ownership
of the appliance at the site of installation within two years following the date of original purchase, that the HHT appliance
will be free from defects in materials and workmanship at the time of manufacture. After installation, if covered compo-
nents manufactured by HHT are found to be defective in materials or workmanship during the applicable warranty period,
HHT will, at its option, repair or replace the covered components. HHT, at its own discretion, may fully discharge all of its
obligations under such warranties by replacing the product itself or refunding the verified purchase price of the product
itself. The maximum amount recoverable under this warranty is limited to the purchase price of the product. This warranty
is subject to conditions, exclusions and limitations as described below.
WARRANTY PERIOD:
Warranty coverage begins on the date of original purchase. In the case of new home construction, warranty coverage
begins on the date of first occupancy of the dwelling or six months after the sale of the product by an independent,
authorized HHT dealer/ distributor, whichever occurs earlier. The warranty shall commence no later than 24 months
following the date of product shipment from HHT, regardless of the installation or occupancy date. The warranty period for
parts and labor for covered components is produced in the following table.
The term “Limited Lifetime” in the table below is defined as: 20 years from the beginning date of warranty coverage for
gas appliances, and 10 years from the beginning date of warranty coverage for wood, pellet, and coal appliances. These
time periods reflect the minimum expected useful lives of the designated components under normal operating conditions.
Warranty Period
Parts Labor
HHT Manufactured Appliances and Venting
EPA
Components Covered
Gas
X
Wood Pellet
Coal Electric Venting
Wood
All parts and material except as
covered by Conditions,
Exclusions, and Limitations
listed
1 Year
X
X
X
X
X
X
Igniters, electronic components,
and glass
X
X
X
X
X
X
2 years
X
X
X
Factory-installed blowers
Molded refractory panels
3 years
X
X
Firepots and burnpots
Castings and baffles
5 years 1 year
X
X
Manifold tubes,
HHT chimney and termination
7 years 3 years
X
X
10
1 year
years
X
X
X
Burners, logs and refractory
Firebox and heat exchanger
Limited
3 years
Lifetime
X
X
X
X
X
X
X
X
All replacement parts
beyond warranty period
90 Days
X
X
See conditions, exclusions, and limitations on next page.
4021-645C 12-29-10
Page 1 of 2
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
5
B. Limited Lifetime Warranty (continued)
WARRANTY CONDITIONS:
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Page 2 of 2
6
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Listing and Code Approvals
1
A. Appliance Certification
C. BTU Specifications
Maximum
Input
BTU/h
Minimum
Input
BTU/h
Orifice
Size
(DMS)
Models
MODELS: GDST3831I
(U.S. or Canada)
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Direct Vent Gas Appliance Heater
STANDARD: ANSI Z21.88-2007 • CSA 2.33a-2007
US
(0-2000 FT)
21,000 14,700
18,900 13,200
20,000
44
45
55
56
GDST3831I (NG)
CANADA
(2000-4500 FT)
US
(0-2000 FT)
This product is listed to ANSI standards for “Vented Gas
Appliance Heaters” and applicable sections of “Gas Burn-
ing Heating Appliances for Manufactured Homes and
Recreational Vehicles”, and “Gas Fired Appliances for
Use at High Altitudes”.
GDST3831I (LP)
CANADA
(2000-4500 FT)
18,000
D. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
NOTICE: This installation must conform with local codes.
In the absence of local codes you must comply with the
National Fuel Gas Code, ANSI Z223.1-latest edition in
the U.S.A. and the CAN/CGA B149 Installation Codes in
Canada.
When installing above 2000 feet elevation:
• In the USA: Reduce input rate 4% for each 1000 feet
above 2000 feet.
• In CANADA: Reduce input rate 10% for elevations
between 2000 feet and 4500 feet. Above 4500 feet,
consult local gas utility.
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
Check with your local gas utility to determine proper orifice
size.
E. Non-Combustible Materials Specification
B. Tempered Glass Specifications
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
Hearth & Home Technologies appliances manufactured
with tempered glass may be installed in hazardous loca-
tions such as bathtub enclosures as defined by the Con-
sumerProductSafetyCommission(CPSC).Thetempered
glass has been tested and certified to the requirements
of ANSI Z97.1 and CPSC 16 CFR 1202 (Safety Glazing
Certification Council SGCC# 1595 and 1597. Architectur-
al Testing, Inc. Reports 02-31919.01 and 02-31917.01).
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in a
Vertical Tube Furnace at 750 ºC and UL763 shall be
considered non-combustible materials.
F. Combustible Materials Specification
This statement is in compliance with CPSC 16 CFR Sec-
tion 1201.5 “Certification and labeling requirements”
which refers to 15 U.S. Code (USC) 2063 stating “…Such
certificate shall accompany the product or shall otherwise
be furnished to any distributor or retailer to whom the
product is delivered.”
Materials made of or surfaced with wood, compressed pa-
per, plant fibers, plastics, or other material that can ignite
and burn, whether flame proofed or not, or plastered or
unplastered shall be considered combustible materials.
G. Electrical Codes
Some local building codes require the use of tempered
glass with permanent marking in such locations. Glass
meeting this requirement is available from the factory.
Please contact your dealer or distributor to order.
NOTICE: This appliance must be electrically wired and
grounded in accordance with local codes or, in the absence
of local codes, with National Electric Code ANSI/NFPA
70-latest edition or the Canadian Electric Code CSA
C22.1.
• A 110-120 VAC circuit for this product must be protected
with ground-fault circuit-interrupter protection, in compliance
with the applicable electrical codes, when it is installed in
locations such as in bathrooms or near sinks.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
7
Inspection
Note: The following requirements reference various
Massachusetts and national codes not contained in this
document.
The state or local gas inspector of the side wall horizon-
tally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector ob-
serves carbon monoxide detectors and signage installed
in accordance with the provisions of 248 CMR 5.08(2)(a)1
through 4.
H. Requirements for the Commonwealth of
Massachusetts
For all side wall horizontally vented gas fueled equipment
installed in every dwelling, building or structure used in
whole or in part for residential purposes, including those
owned or operated by the Commonwealth and where the
side wall exhaust vent termination is less than seven (7)
feet above finished grade in the area of the venting, in-
cluding but not limited to decks and porches, the following
requirements shall be satisfied:
Exemptions
The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
• The equipment listed in Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition
of NFPA 54 as adopted by the Board; and
• Product Approved side wall horizontally vented gas fu-
eled equipment installed in a room or structure separate
from the dwelling, building or structure used in whole or
in part for residential purposes.
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gas fitter
shall observe that a hard wired carbon monoxide detector
with an alarm and battery back-up is installed on the floor
level where the gas equipment is to be installed. In addi-
tion, the installing plumber or gas fitter shall observe that
a battery operated or hard wired carbon monoxide detec-
tor with an alarm is installed on each additional level of
the dwelling, building or structure served by the side wall
horizontal vented gas fueled equipment. It shall be the
responsibility of the property owner to secure the services
of qualified licensed professionals for the installation of
hard wired carbon monoxide detectors.
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall
horizontally vented gas equipment provides a venting
system design or venting system components with the
equipment, the instructions provided by the manufacturer
for installation of the equipment and the venting system
shall include:
• Detailed instructions for the installation of the venting
system design or the venting system components; and
In the event that the side wall horizontally vented gas fu-
eled equipment is installed in a crawl space or an attic,
the hard wired carbon monoxide detector with alarm and
battery back-up may be installed on the next adjacent
floor level.
• A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
In the event that the requirements of this subdivision can
not be met at the time of completion of installation, the
owner shall have a period of thirty (30) days to comply
with the above requirements; provided, however, that dur-
ing said thirty (30) day period, a battery operated carbon
monoxide detector with an alarm shall be installed.
When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not pro-
vide the parts for venting the flue gases, but identifies
“special venting systems”, the following requirements
shall be satisfied by the manufacturer:
• The referenced “special venting system” instructions
shall be included with the appliance or equipment in-
stallation instructions; and
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accor-
dance with the above provisions shall comply with NFPA
720 and be ANSI/UL 2034 listed and IAS certified.
• The “special venting systems” shall be Product Ap-
proved by the Board, and the instructions for that sys-
tem shall include a parts list and detailed installation
instructions.
Signage
A metal or plastic identification plate shall be permanent-
ly mounted to the exterior of the building at a minimum
height of eight (8) feet above grade directly in line with the
exhaust vent terminal for the horizontally vented gas fu-
eled heating appliance or equipment. The sign shall read,
in print size no less than one-half (1/2) inch in size, “GAS
VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OB-
STRUCTIONS”.
A copy of all installation instructions for all Product Ap-
proved side wall horizontally vented gas fueled equip-
ment, all venting instructions, all parts lists for venting
instructions, and/or all venting design instructions shall
remain with the appliance or equipment at the completion
of the installation.
See Gas Connection section for additional Common-
wealth of Massachusetts requirements.
8
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
User Guide
Operating Instructions
2
• Keep remote controls out of reach of children.
A. Gas Fireplace Safety
• Never leave children alone near a hot fireplace, whether
operating or cooling down.
WARNING
HOT SURFACES!
• Teach children to NEVER touch the fireplace.
Glass and other surfaces are hot during
operation AND cool down.
• Consider not using the fireplace when children will be
present.
Hot glass will cause burns.
• DO NOT touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
Contact your dealer for more information, or visit:www.
hpba.org/safety-information.
To prevent unintended operation when not using your fire-
place for an extended period of time (summer months,
vacations, trips, etc):
• CAREFULLY SUPERVISE children in same room as
fireplace.
• Alert children and adults to hazards of high temperatures.
• Remove batteries from remote controls.
• Turn off wall controls.
High temperatures may ignite clothing or other
flammable materials.
• Keep clothing, furniture, draperies and other flammable
materials away.
• Unplug 3 volt adapter plug and remove batteries on IPI
models.
This appliance has been supplied with an integral barrier
to prevent direct contact with the fixed glass panel. DO
NOT operate the appliance with the barrier removed.
B. Your Fireplace
Contact your dealer or Hearth & Home Technologies if the
barrier is not present or help is needed to properly install one.
WARNING! DO NOT operate fireplace before read-
ing and understanding operating instructions. Failure
to operate fireplace according to operating instructions
could cause fire or injury.
If you expect that small children or vulnerable adults may
come into contact with this fireplace, the following precau-
tions are recommended:
• Install a physical barrier such as:
- A decorative firescreen.
- Adjustable safety gate.
• Install a switch lock or a wall/remote control with child
protection lockout feature.
DECORATIVE DOORS
(NOT SHOWN)
SECTION 2.E.
FIXED GLASS ASSEMBLY
SECTION 14.G.
MANTEL
HEARTH
CLEAR SPACE
SECTION 2.D.
Figure 2.1 General Operating Parts
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
9
C. Fan Kit (optional)
F. Fixed Glass Assembly
If desired, a fan kit may be added. Contact your dealer to
order the correct fan kit.
See Section 14.G.
G. Remote Controls, Wall Controls and Wall
Switches
D. Clear Space
WARNING! DO NOT place combustible objects in front
of the fireplace or block louvers. High temperatures may
start a fire. See Figure 2.2.
Follow the instructions supplied with the control installed
to operate your fireplace:
For safety:
Avoid placing candles and other heat-sensitive objects on
mantel or hearth. Heat may damage these objects.
• Install a switch lock or a wall/remote control with child
protection lockout feature.
• Keep remote controls out of reach of children.
See your dealer if you have questions.
H. Before Lighting Fireplace
Before operating this fireplace for the first time, have a
qualified service technician:
• Verify all shipping materials have been removed from
inside and/or underneath the firebox.
• Review proper placement of logs, ember material and/or
other decorative materials.
• Check the wiring.
• Check the air shutter adjustment.
• Ensure that there are no gas leaks.
• Ensure that the glass is sealed and in the proper position
and that the integral barrier is in place.
Figure 2.2 Clear Space
WARNING! Risk of Fire or Asphyxiation! DO NOT op-
erate fireplace with fixed glass assembly removed.
E. Decorative Doors and Fronts
WARNING! Risk of Fire! Install ONLY doors or fronts
approved by Hearth & Home Technologies. Unapproved
doors or fronts may cause fireplace to overheat.
This fireplace has been supplied with an integral
barrier to prevent direct contact with the fixed glass
panel. DO NOT operate the fireplace with the barrier
removed.
Contact your dealer or Hearth & Home Technologies if
the barrier is not present or help is needed to properly
install one.
For more information refer to the instructions supplied with
your decorative door or front.
10
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
I. Lighting Instructions (IPI)
The IPI system may be operated with two D-cell batteries. When using batteries, unplug the transformer. To prolong battery
life, remove them when using the transformer.
FOR YOUR SAFETY
LIGHTING
READ BEFORE LIGHTING
INSTRUCTIONS (IPI)
WARNING: If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
1. This appliance is equipped with an ignition
device which automatically lights the burner.
DO NOT try to light the burner by hand.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
A. This appliance is equipped with an
intermittent pilot ignition (IPI) device
which automatically lights the burn-
er. DO NOT try to light the burner by
hand.
GAS
VALVE
• If you cannot reach your gas sup-
plier, call the fire department.
B. BEFORE LIGHTING, smell all around
the appliance area for gas. Be sure to
smell next to the floor because some
gas is heavier than air and will settle
on the floor.
C. DO NOT use this appliance if any
part has been under water. Imme-
diately call a qualified service tech-
nician to inspect the appliance and
to replace any part of the control
system and any gas control which
has been under water.
2. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor. If
you smell gas, STOP! Follow “B” in the Safety
Information located on the left side of this la-
bel. If you do not smell gas, go to next step.
WHAT TO DO IF YOU SMELL GAS
• DO NOT try to light any appliance.
3. To light the burner:
• DO NOT touch any electric switch; do
not use any phone in your building.
Equipped with wall switch: Turn ON/OFF switch
to ON.
Equipped with remote or wall control: Press
ON or FLAME button.
WARNING: CAUTION:
Equipped with thermostat: Set temperature to
desired setting.
Hot while in operation. DO NOT touch.
Keep children, clothing, furniture, gaso-
line and other liquids having flammable
vapors away.
DO NOT CONNECT LINE VOLT-
AGE (110/120 VAC OR 220/240
VAC) TO THE CONTROL VALVE.
4. If the appliance does not light after three tries,
call your service technician or gas supplier.
Improper installation, adjustment, al-
teration, service or maintenance can
cause injury or property damage. Re-
fer to the owner’s information manual
provided with this appliance.
TO TURN OFF
GAS TO APPLIANCE
1. Equipped with wall switch: Turn ON/OFF switch
DO NOT operate the appliance with
fixed glass assembly removed, cracked
or broken. Replacement of the fixed
glass assembly should be done by a
licensed or qualified service person.
to OFF.
This appliance needs fresh air for
safe operation and must be installed
so there are provisions for adequate
combustion and ventilation air.
Equipped with remote or wall control: Press
OFF button.
NOT FOR USE
WITH SOLID FUEL
Equipped with thermostat: Set temperature to
lowest setting.
If not installed, operated, and main- For use with natural gas and propane.
tained in accordance with the manufac- A conversion kit, as supplied by the
turer’s instructions, this product could manufacturer, shall be used to convert
expose you to substances in fuel or this appliance to the alternate fuel.
2. Service technician should turn off electric
power to the control when performing service.
fuel combustion which are known to
the State of California to cause can-
cer, birth defects, or other reproductive
Also Certified for Installation in a
Bedroom or a Bedsitting Room.
593-913G
For assistance or additional informa-
tion, consult a qualified installer, ser-
vice agency or the gas supplier.
harm.
Keep burner and control compartment
clean. See installation and operating
instructions accompanying appliance.
For additional information on operating your
Hearth & Home Technologies fireplace, please refer to www.fireplaces.com.
Final inspection by
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
11
J. After Fireplace is Lit
Initial Break-in Procedure
• The fireplace should be run three to four hours
continuously on high.
• Turn the fireplace off and allow it to completely cool.
• Remove fixed glass assembly. See Section 14.G.
• Clean fixed glass assembly. See Section 3.
• Replace the fixed glass assembly and run continuously
on high an additional 12 hours.
This cures the materials used to manufacture the fire-
place.
NOTICE! Open windows for air circulation during fire-
place break-in.
• Some people may be sensitive to smoke and odors.
• Smoke detectors may activate.
K. Frequently Asked Questions
ISSUE
SOLUTIONS
This is a result of gas combustion and temperature variations. As the fireplace warms, this
condensation will disappear.
Condensation on the glass
This is a result of normal operation and the flames will begin to yellow as the fireplace is al-
lowed to burn for 20 to 40 minutes.
Blue flames
When first operated, this fireplace may release an odor for the first several hours. This is
caused by the curing of materials from manufacturing. Odor may also be released from
finishing materials and adhesives used near the fireplace. These circumstances may require
additional curing related to the installation environment.
Odor from fireplace
This is a normal result of the curing process of the paint and logs. Glass should be cleaned
within 3 to 4 hours of initial burning. A non-abrasive cleaner such as gas fireplace glass
cleaner may be necessary. See your dealer.
Film on the glass
Noise is caused by metal expanding and contracting as it heats up and cools down, similar to
the sound produced by a furnace or heating duct. This noise does not affect the operation or
longevity of the fireplace.
Metallic noise
12
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Maintenance and Service
3
Doors, Surrounds, Fronts
Any safety screen or guard removed for servicing must be
replaced prior to operating the fireplace.
Frequency: Annually
By: Homeowner
When properly maintained, your fireplace will give you
many years of trouble-free service. We recommend an-
nual service by a qualified service technician.
Tools needed: Protective gloves, stable work surface
• Assess condition of screen and replace as necessary.
A. Maintenance Tasks-Homeowner
• Inspect for scratches, dents or other damage and repair
as necessary.
Installation and repair should be done by a qualified service
technician only. The fireplace should be inspected before
use and at least annually by a professional service person.
• Check that louvers are not blocked.
• Vacuum and dust surfaces.
The following tasks may be performed annually by the
homeowner. If you are uncomfortable performing any of
the listed tasks, please call your dealer for a service ap-
pointment.
Remote Control
Frequency: Seasonally
By: Homeowner
More frequent cleaning may be required due to lint from
carpeting or other factors. Control compartment, burner
and circulating air passageway of the fireplace must be
kept clean.
Tools needed: Replacement batteries and remote con-
trol instructions.
• Locate remote control transmitter and receiver.
• Verify operation of remote. Refer to remote control
operation instructions for proper calibration and setup
procedure.
CAUTION! Risk of Burns! The fireplace should be turned
off and cooled before servicing.
Glass Cleaning
Frequency: Seasonally
By: Homeowner
• Place batteries as needed in remote transmitters and
battery-powered receivers.
• Place remote control out of reach of children.
Tools Needed: Protective gloves, glass cleaner, drop
cloth and a stable work surface.
If not using your fireplace for an extended period of time
(summer months, vacations/trips, etc), to prevent unin-
tended operation:
CAUTION! Handle fixed glass assembly with care.
Glass is breakable.
• Avoid striking, scratching or slamming glass
• Avoid abrasive cleaners
• Remove batteries from remote controls.
• Unplug 3 volt adapter plug on IPI models.
• DO NOT clean glass while it is hot
• Prepare a work area large enough to accommodate fixed
glass assembly and door frame by placing a drop cloth
on a flat, stable surface.
Note: Fixed glass assembly and gasketing may have res-
idue that can stain carpeting or floor surfaces.
• Remove door or decorative front from fireplace and set
aside on work surface.
• See Section 14.G for instructions to remove fixed glass
assembly.
• Clean glass with a non-abrasive commercially available
cleaner.
- Light deposits: Use a soft cloth with soap and water
- Heavy deposits: Use commercial fireplace glass
cleaner (consult with your dealer)
• Carefully set fixed glass assembly in place on fireplace.
Hold glass in place with one hand and secure glass
latches with the other hand.
• Reinstall door or decorative front.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
13
Venting
Logs
Frequency: Seasonally
By: Homeowner
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves.
Tools needed: Protective gloves and safety glasses.
• Inspect venting and termination cap for blockage or
obstruction such plants, bird nests, leaves, snow, debris,
etc.
• Inspect for damaged or missing logs. Replace as necessary.
Refer to Section 14 for log placement instructions.
• Verify correct log placement and no flame impingement
• Verify termination cap clearance to subsequent construc-
tion (building additions, decks, fences, or sheds). See
Section 6.
causing sooting. Correct as necessary.
Firebox
Frequency: Annually
By: Qualified Service Technician
• Inspect for corrosion or separation.
• Verify weather stripping, sealing and flashing remains
Tools needed: Protective gloves, sandpaper, steel wool,
intact.
cloths, mineral spirits, primer and touch-up paint.
• Inspect draft shield to verify it is not damaged or missing.
• Inspect for paint condition, warped surfaces, corrosion
or perforation. Sand and repaint as necessary.
B. Maintenance Tasks-Qualified Service
Technician
• Replace fireplace if firebox has been perforated.
The following tasks must be performed by a qualified ser-
vice technician.
Control Compartment and Firebox Top
Frequency: Annually
Gasket Seal and Glass Assembly Inspection
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, vacuum cleaner, dust
cloths
By: Qualified Service Technician
Tools needed: Protective gloves, drop cloth and a stable
work surface.
• Vacuum and wipe out dust, cobwebs, debris or pet hair.
Use caution when cleaning these areas. Screw tips that
have penetrated the sheet metal are sharp and should
be avoided.
• Inspect gasket seal and its condition.
• Inspect fixed glass assembly for scratches and nicks that
can lead to breakage when exposed to heat.
• Remove all foreign objects.
• Verify unobstructed air circulation.
• Confirm there is no damage to glass or glass frame.
Replace as necessary.
• Verify that fixed glass assembly is properly retained and
attachment components are intact and not damaged.
Replace as necessary.
14
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Burner Ignition and Operation
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, vacuum cleaner, whisk
broom, flashlight, voltmeter, indexed drill bit set, and a
manometer.
• Verify burner is properly secured and aligned with pilot
or igniter.
• Clean off burner top, inspect for plugged ports, corrosion
or deterioration. Replace burner if necessary.
• Replace ember materials with new dime-size pieces.
DO NOT block ports or obstruct lighting paths. Refer to
Section 14 for proper ember placement.
• Verify batteries have been removed from battery back-
up IPI systems to prevent premature battery failure or
leaking.
• Check for smooth lighting and ignition carryover to all
ports. Verify that there is no ignition delay.
• Inspect for lifting or other flame problems.
• Verify air shutter setting is correct. See Section 14 for
required air shutter setting. Verify air shutter is clear of
dust and debris.
• Inspect orifice for soot, dirt and corrosion. Verify orifice
size is correct. See Service Parts List for proper orifice
sizing.
• Verify manifold and inlet pressures. Adjust regulator as
required.
• Inspect pilot flame pattern and strength. See Figure 3.2
for proper pilot flame pattern. Clean or replace orifice
spud as necessary.
• Inspect IPI flame sensing rod for soot, corrosion and
deterioration. Polish with fine steel wool or replace as
required.
• Verify that there is not a short in flame sense circuit by
checking continuity between pilot hood and flame sense
rod. Replace pilot as necessary.
Figure 3.2 IPI Pilot Flame Patterns
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
15
Installer Guide
Getting Started
4
A. Typical Appliance System
NOTICE: Illustrations and photos reflect typical installations and are for design purposes only. Illustrations/diagrams are not
drawn to scale. Actual product may vary from pictures in manual
HORIZONTAL
TERMINATION CAP
(SECTION 8.A)
NON-COMBUSTIBLE ROOF FLASHING
MAINTAINS MINIMUM CLEARANCE
AROUND PIPE (SECTION 10.C)
VERTICAL TERMINATION CAP
(SECTION 10.C)
STORM COLLAR
(SECTION 10.C)
VENT PIPE PENETRATES ROOF
PREFERABLY WITHOUT AFFECTING
ROOF RAFTERS (SECTION 8.C )
ATTIC INSULATION SHIELD (NOT
SHOWN) MUST BE USED HERE
TO KEEP INSULATION AWAY
FROM VENT PIPE IF ATTIC IS
INSULATED (SECTION 8.D )
VENT PIPE (SECTION 8 and 10)
FRAMING/HEADER
(SECTION 5.B)
FRAMING HEADED OFF
IN CEILING JOISTS
(SECTION 8.C)
CEILING FIRESTOP
ON FLOOR OF ATTIC
(SECTION 8.C)
OPTIONAL
WALL SWITCH
GAS LINE
(SECTION 11.C)
HEARTH EXTENSION
SURROUND
MANTEL AND
MANTEL LEG
(SECTION 5.D)
Figure 4.1 Typical System
16
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
B. Design and Installation Considerations
D. Inspect Appliance and Components
Heatilator direct vent gas appliances are designed to op-
erate with all combustion air siphoned from outside of the
building and all exhaust gases expelled to the outside. No
additional outside air source is required.
• Carefully remove the appliance and components from
the packaging.
• The vent system components and decorative doors and
fronts may be shipped in separate packages.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, fire officials or authorities having
jurisdiction over restrictions, installation inspection and
permits.
• If packaged separately, the log set and appliance grate
must be installed.
• Report to your dealer any parts damaged in shipment,
particularly the condition of the glass.
• Read all of the instructions before starting the instal-
lation. Follow these instructions carefully during the
installation to ensure maximum safety and benefit.
Before installing, determine the following:
• Where the appliance is to be installed.
• The vent system configuration to be used.
• Gas supply piping.
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
• Electrical wiring requirements.
• Framing and finishing details.
Hearth & Home Technologies disclaims any responsibility for,
and the warranty will be voided by, the following actions:
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
• Installation and use of any damaged appliance or vent
system component.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualified
service technician, service agency or your dealer.
• Modification of the appliance or vent system.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improper positioning of the gas logs or the glass door.
• Installation and/or use of any component part not approved
by Hearth & Home Technologies.
C. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Any such action may cause a fire hazard.
Tape measure
Pliers
Framing material
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualified service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
Non-corrosive leak check solution
Phillips screwdriver
Framing square
Hammer
Gloves
Voltmeter
Plumb line
Level
Electric drill and bits (1/4 in.)
Safety glasses
Reciprocating saw
Manometer
Flat blade screwdriver
1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
One 1/4 in. female connection (for optional fan).
Caulking material (300ºF minimum continuous exposure
rating)
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
17
Framing and Clearances
5
NOTICE: Illustrations reflect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation may vary due to
individual design preference.
A. Selecting Appliance Location
When selecting a location for the appliance it is important to
consider the required clearances to walls (see Figure 5.1).
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due to high temperatures, the appliance should be locat-
ed out of traffic and away from furniture and draperies.
36 in.
914 mm
GDST3831I
36 in.
914 mm
Figure 5.1 Appliance Locations
18
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
To further prevent drafts, the wall shield and ceiling fire-
stops should be caulked with caulk with a minimum of
300ºF continuous exposure rating to seal gaps. Gas line
holes and other openings should be caulked with caulk
with a minimum of 300ºF continuous exposure rating or
stuffed with unfaced insulation. If the appliance is being
installed on a cement slab, a layer of plywood may be placed
underneath to prevent conducting cold up into the room.
B. Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose the
gas appliance and/or its vent system. In cooler climates
the vent should enclosed inside the chase.
NOTICE: Treatment of ceiling firestops and wall shield
firestops and construction of the chase may vary with the
type of building. These instructions are not substitutes
for the requirements of local building codes. Therefore,
you MUST check local building codes to determine the
requirements to these steps.
C. Clearances
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly
on carpeting, vinyl, tile or any combustible material other
than wood.
Chases should be constructed in the manner of all out-
side walls of the home to prevent cold air drafting prob-
lems. The chase should not break the outside building
envelope in any manner.
WARNING! Risk of Fire! Maintain specified air space
Walls, ceiling, base plate and cantilever floor of the chase
should be insulated. Vapor and air infiltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air infiltration may be an issue, the inside surfaces may be
sheetrocked and taped for maximum air tightness.
clearances to appliance and vent pipe:
• Insulation and other materials must be secured to prevent
accidental contact.
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
making contact with fireplace or chimney.
• Failure to maintain airspace may cause overheating and
a fire.
Note: The header must
be installed on end as
shown in this diagram.
A
A
E
HEADER
I
F
*C
D
B
G
H
MINIMUM FRAMING DIMENSIONS
A
B
*C
D
E
F
G
H
I
Rough
Opening Opening
(Width) (Height)
Rough
Rough
Opening Opening
(Depth)
Rough
GDST3831I
Clearance Combustible Combustible Ends of
Sides of
to Ceiling
Floor
Flooring
Appliance Appliance
(Width)
8-5/8
219
34-3/4
883
15
38-1/8
31
0
0
0
0
1/2
13
36
Inches
381
969
787
914
Millimeters
* Adjust framing dimensions for interior sheathing (such as sheetrock)
Figure 5.2 Clearances to Combustibles GDST3831I
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
19
D. Mantel and Wall Projections
WARNING! Risk of Fire! Comply with all minimum clear-
ances as specified. Framing or finishing material closer than
the minimums listed must be constructed entirely of noncom-
bustible materials (i.e., steel studs, concrete board, etc).
1/2 in.
Min.
TOP VIEW
FIREPLACE
OPENING
3-1/4 in.
Min.
Note: All
measurements
in inches.
Unlimited
CEILING
Note: Clearance from opening to
perpendicular wall.
MAX.
12
11
Figure 5.5 Combustible Mantel Leg or Wall Projections
(Acceptable on both sides of opening)
10
9
8
5
32
7
6
5
MIN.
13
12
SHEETROCK
3.5 in.
4
11
3
10
9
8
7
6
4
TOP OF HOOD OR FIREPLACE OPENING
Figure 5.3 Minimum Vertical and Maximum Horizontal
Dimensions of Combustibles
Note: All
measurements
CEILING
in inches.
MAX.
AIR SPACE REQUIRED
18
Figure 5.6 Non-Combustible Zone
12
11
10
32
9
MIN.
14
8
8
7
6
7
6
5
4
3
5
2
1
4
TOP OF HOOD OR FIREPLACE OPENING
Figure 5.4 Minimum Vertical and Maximum Horizontal
Dimensions of Non-Combustibles
20
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Termination Locations
6
A. Vent Termination Minimum Clearances
A
B
6 in. (minimum) up to 20 in.
152 mm/508 mm
18 in. minimum
457 mm
WARNING
20 in. and over
0 in. minimum
Fire Risk.
Gas, Wood or Fuel Oil
Termination Cap
Maintain vent clearance to combustibles as
specified.
• DO NOT pack air space with insulation or other
materials.
B
Failure to keep insulation or other materials away
from vent pipe may cause overheating and fire.
A *
HORIZONTAL
OVERHANG
Gas
Termination
Cap **
2 FT.
20 INCHES MIN.
VERTICAL
MIN.
WALL
LOWEST
DISCHARGE
OPENING
GAS DIRECT VENT
TERMINATION CAP
X
12
*
If using decorative cap cover(s), this distance may need to be
increased. Refer to the installation instructions supplied with the
decorative cap cover.
ROOF PITCH
IS X/ 12
In a staggered installation with both gas and wood or fuel oil
terminations, the wood or fuel oil termination cap must be
higher than the gas termination cap.
**
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
Figure 6.2 Staggered Termination Caps
Roof Pitch
H (Min.) Ft.
Flat to 6/12...........................................................1.0*
Over 6/12 to 7/12.................................................1.25*
Over 7/12 to 8/12.................................................1.5*
Over 8/12 to 9/12.................................................2.0*
Over 9/12 to 10/12...............................................2.5
Over 10/12 to 11/12.............................................3.25
Over 11/12 to 12/12.............................................4.0
Over 12/12 to 14/12.............................................5.0
Over 14/12 to 16/12.............................................6.0
Over 16/12 to 18/12.............................................7.0
Over 18/12 to 20/12.............................................7.5
Over 20/12 to 21/12.............................................8.0
* 3 foot minimum in snow regions
Figure 6.1 Minimum Height From Roof To Lowest Discharge
Opening
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
21
O
N
P
R
F
C
V
Q
B
J
H or i
B
V
B
V
V
E
X
D
V
V
G
H
M
V
V
V
V
L
H
V
A
A
K
K
Electrical
Service
V
V
V
X
= VENT TERMINAL
C
V
= AIR SUPPLY INLET
= AREA WHERE TERMINAL IS NOT PERMITTED
A
B
= 12 inches.................clearances above grade, veranda,
porch, deck or balcony
Covered Alcove Applications
(Spaces open only on one side and with an overhang)
= 12 inches.................clearance to window or door that may
be opened, or to permanently closed
window
N
= 6 inches ........... non-vinyl sidewalls
12 inches ......... vinyl sidewalls
= 18 inches ......... non-vinyl soffit and overhang
42 inches ......... vinyl soffit and overhang
= 8 ft.
O
P
C
= 18 inches.................clearance below unventilated soffit
18 inches.................clearance below ventilated soffit
30 inches.................clearance below vinyl soffits and
electrical service
QMIN
3 feet
6 feet
9 feet
12 feet
RMAX
1 cap
2 caps
3 caps
4 caps
2 x Q ACTUAL
1 x Q ACTUAL
2/3 x Q ACTUAL
1/2 x Q ACTUAL
D
E
F
= 6 inches...................clearance to outside corner
= 6 inches...................clearance to inside corner
= 3 ft. (Canada)..........not to be installed above a gas me-
ter/regulator assembly within 3 feet
horizontally from the center-line of the
regulator
QMIN = # termination caps x 3 RMAX = (2 / # termination caps) x QACTUAL
G
H
= 3 ft...........................clearance to gas service regulator
vent outlet
= 9 inches (U.S.A)
Measure vertical clearances from this surface.
12 inches (Canada).clearancetonon-mechanical(unpow-
ered) air supply inlet, combustion air
inlet or direct-vent termination
i
= 3 ft. (U.S.A.)
6 ft. (Canada)...........clearance to a mechanical (powered)
air supply inlet
All mechanical air intakes within 10 feet of a termination cap
must be a minimum of 3 feet below termination.
J
= 7 ft.......................... Onpublic property: clearance above
paved sidewalk or a paved driveway.
A vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family dwellings
and serves both dwellings.
Measure horizontal clearances from this surface.
CAUTION! Risk of Burns! Termination caps are HOT,
consider proximity to doors, traffic areas or where people
may pass or gather (sidewalk, deck, patio, etc.). Listed cap
shields available. Contact your dealer.
K
L
=
6 inches.................clearance from sides of electrical
service
•
•
•
•
Local codes or regulations may require different
clearances.
= 12 inches................clearance above electrical service
Location of the vent termination must not interfere with access to the
electrical service.
Vent system termination is NOT permitted in screened
porches.
Vent system termination is permitted in porch areas with
two or more sides open.
M
= 18 inches ....................clearanceunderveranda, porch, deck,
balcony or overhang
Hearth & Home Technologies assumes no responsibility
for the improper performance of the appliance when the
venting system does not meet these requirements.
Vinyl protection kits are suggested for use with vinyl siding.
42 inches ................vinyl or composite overhang
Permitted when veranda, porch, deck or balcony is fully open
on a minimum of 2 sides beneath the floor.
Figure 6.3 Minimum Clearances for Termination
•
22
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
B. Continue Adding Vent Components
COMBUSTIBLE SURFACE
CORRECT
INCORRECT
WARNING! Risk of Fire! Installation of this appliance
may require the use of heat shield 385-290 above the
first 90º elbow in the venting system.
DIRECTION
UP
HEAT SHIELD
90º ELBOW
To Install the Heat Shield:
1. Determine if the heat shield is required. Do so by measuring
the vertical distance between the top horizontal surface of
the elbow to any combustible surface above. If the distance
is more than 4 inches, the heat shield is NOT required. If it
is 4 inches or less, the heat shield IS REQUIRED. Install
per the following steps. See Figure 6.4.
Figure 6.5
• If the combustible materials are not in place at the time
of install, the elbow heat shield may be screwed to the
exhaust pipe (see Figure 6.6). Cut the tabs as shown and
bend down. Secure the heat shield to the pipe maintain-
ing 3 inch to 4 inch between the pipe and shield.
COMBUSTIBLE
SURFACE
3 in. MIN.
(76 mm)
SCREW
HEAT
SHIELD
3 in.
(76 mm)
Figure 6.6
Refer to Cinch Pipe and Termination Cap installation in-
structions.
Figure 6.4
• Continue adding vent components, locking each suc-
ceeding component into place.
2. Fasten the shield in place using the four pilot holes
provided in the part. The shield should be oriented such
that the 13-1/8 inch dimension (longest dimension) is
running in the same direction the elbow is pointing. The
shield should be centered directly above the elbow, and
positioned so that it creates a 1/2 inch airspace between
the shield and the combustible surface. See Figure 6.5.
• Ensure that each succeeding vent component is securely
fitted and locked into the preceding component in the
vent system.
• 90º elbows may be installed and rotated to any point
around the preceding component’s vertical axis. If an
elbow does not end up in a locked position with the
preceding component, attach with a minimum of two (2)
sheet metal screws.
C. Install Support Brackets
Refer to cinch pipe and termination cap installation in-
structions.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
23
Vent Information and Diagrams
7
A. Approved Pipe
This appliance is approved for use with Hearth & Home
Technologies a SLP venting system. Refer to Section
16B for vent component information.
DO NOT mix pipe, fittings or joining methods from differ-
ent manufacturers.
Vertical
The pipe is tested to be run inside an enclosed wall.
There is no requirement for inspection openings at each
joint within the wall.
8-1/2 in.
WARNING! Risk of Fire or Asphyxiation. This appli-
ance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.
B. Vent Table Key
Horizontal
The abbreviations listed in this vent table key are used in
the vent diagrams.
Figure 7.1
Symbol
Description
First section (closest to appliance) of vertical length
V1
D. Measuring Standards
Second section of vertical length
V2
H1
H2
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards.
First section (closest to appliance) of horizontal length
Subsequent sections of horizontal length
• Pipe measurements are shown using the effective length
of pipe (see Figure 7.2).
• Horizontal terminations are measured to the outside
mounting surface (flange of termination cap) (see Figure
6.1).
C. Use of Elbows
Diagonal runs have both vertical and horizontal vent as-
pects when calculating the effects. Use the rise for the
vertical aspect and the run for the horizontal aspect (see
Figure 7.1).
• Vertical terminations are measured to bottom of
termination cap.
• Horizontal pipe installed level with no rise.
Two 45º elbows may be used in place of one 90º elbow.
On 45º runs, one foot of diagonal is equal to 8-1/2 in. (216
mm) horizontal run and 8-1/2 in. (216 mm) vertical run. A
length of straight pipe is allowed between two 45º elbows
(see Figure 7.1).
Effective Height/Length
Pipe
SLP4
niches
4
mm
102
SLP6
6
152
SLP12
12
24
36
48
2-6
2-12
24
36
60
120
305
SLP24
610
Effective
Height/
Length
SLP36
914
SLP48
1219
51-152
51-305
610
SLP6A
SLP12A
SLP-FLEX-2
SLP-FLEX-3
SLP-FLEX-5
SLP-FLEX-10
914
1524
3048
Figure 7.2 SLP Pipe Effective Length
24
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
E. Use of Flex Vent
The flex vent must be supported with the spacing between
support intervals not exceeding 4 feet, with no more than
1/2 inch sag between supports.
TERMINATION CAP
3 in. CLEARANCE
A support is required at each change in venting direction,
and in any location where it is necessary to maintain the
necessary clearance to combustibles. A simple “up and
out” installation (Figure 7.3) requires only enough sup-
port to maintain the necessary clearance to combustibles.
However, the vent attachment point and the firestop loca-
tion are considered to be supports.
FLEX VENT
1 in. CLEARANCE
Figure 7.3
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
25
F. Vent Diagrams
General Rules:
• SUBTRACT 3 ft. from the total H measurement for each
90° elbow installed horizontally.
• SUBTRACT 1-1/2 ft. from the total H measurement for
each 45° elbow installed horizontally.
• A maximum of three 90° elbows (or six 45° elbows) may
be used in any vent configuration. Some elbows may be
installed horizontally. See Figure 7.6.
• Elbows may be placed back to back anywhere in the
system as long as the first 90° elbow is a starter elbow.
• When penetrating a combustible wall, a wall shield
firestop must be installed.
• When penetrating a combustible ceiling, a ceiling firestop
must be installed.
• Horizontal runs of vent do not require vertical rise;
horizontal runs may be level.
1. Top Vent - Horizontal Termination
One Elbow
V1 Minimum**
H1 Maximum
90 Elbow**
2 ft.
2 ft.
3 ft.
5 ft.
7 ft.
14 ft.
610 mm
WARNING**
1/2 ft.**
152 mm
610 mm
914 mm
1.5 m
1-1/2 ft.** 457 mm
2-1/2 ft.** 762 mm
Fire Risk.
• When using SLP-HRC-SS and SLP-HRC-ZC-SS
termination caps on top vented fireplaces, a one
foot minimum vertical vent section is required before
3-1/2 ft.
4-1/2 ft.
1.1 m
1.4 m
2.1 m
4.3 m
installing first elbow.
• When using DVP-TB1 termination cap on top vented
fireplaces, a three foot minimum vertical vent section
is required before installing first elbow.
H1 Max. =14 ft. (4.3 m)
V + H Max. = 40 ft. (12.2 m)
See Warning**
• When using any other cap, a section of vertical pipe (12 inches
minimum) MUST be installed prior to attaching a 90° elbow.
Note: There MUST be a 25%
reduction in total H when using
flex vent except when using the
simple up and out installation
(see Figure 7.3).
V1
H1
Figure 7.4
26
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
1. Top Vent - Horizontal Termination - (continued)
Two Elbows
V1 Minimum**
H1 + H2 Maximum
90 Elbow**
1/2 ft.
1 ft.
152 mm
305 mm
610 mm
1.2 m
1/2 ft.**
152 mm
WARNING**
1-1/2 ft.** 457 mm
2-1/2 ft.** 762 mm
2 ft.
Fire Risk.
4 ft.
• When using SLP-HRC-SS and SLP-HRC-ZC-SS
termination caps on top vented fireplaces, a one
foot minimum vertical vent section is required before
3-1/2 ft.
4-1/2 ft.
1.1 m
1.4 m
6 ft.
1.8 m
14 ft.
4.3 m
installing first elbow.
• When using DVP-TB1 termination cap on top vented
fireplaces, a three foot minimum vertical vent section
is required before installing first elbow.
H1 + H2 Max. =14 ft. (4.3 m)
V1 + H1 + H2 Max. = 40 ft. (12.2 m)
See Warning**
• When using any other cap, a section of vertical pipe (12 inches
minimum) MUST be installed prior to attaching a 90° elbow.
Note: There MUST be a 25%
reduction in total H when using
flex vent except when using the
simple up and out installation
(see Figure 7.3).
V1
H2
H1
INSTALLED
HORIZONTALLY
Figure 7.5
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
27
1. Top Vent - Horizontal Termination - (continued)
Three Elbows
V1 Minimum**
H1 + H2 Maximum
V2
V1 + V2 Min.
90 Elbow**
2 ft.
6 ft.
610 mm
1.8 m
3 m
*
*
*
*
*
*
*
*
*
*
1/2 ft.**
1-1/2 ft.**
2-1/2 ft.**
3-1/2 ft.
152 mm
457 mm
762 mm
1.1 m
10 ft.
12 ft.
14 ft.
3.7 m
4.3 m
H1 + H2 Max. =14 ft. (4.3 m)
*No specific restrictions on this value
EXCEPT V1 + V2 + H1 + H2 cannot exceed 40 ft. (12.2 m)
See Warning Below**
Note: There MUST be a 25%
reduction in total H when using
flex vent except when using the
simple up and out installation
(see Figure 7.3).
H2
V2
V1
H1
WARNING**
Fire Risk.
• When using SLP-HRC-SS and SLP-HRC-ZC-SS
termination caps on top vented fireplaces, a one
foot minimum vertical vent section is required before
installing first elbow.
• When using DVP-TB1 termination cap on top vented
fireplaces, a three foot minimum vertical vent section
is required before installing first elbow.
• When using any other cap, a section of vertical pipe (12 inches
minimum) MUST be installed prior to attaching a 90° elbow.
Figure 7.6
28
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Exhaust restrictor Instructions
2. Top Vent - Vertical Termination
No Elbow
1. Center the exhaust restrictor in the open end of the ex-
haust outlet and secure through the slots on the exhaust
restrictor with the 2-1/4 in. self tapping screws provided
in the appliance manual bag.
Note: Use SLP Series
components only.
Note: If installing a vertical vent/termination off the top of the
appliance, the exhaust restrictor may be needed.
V1 = 3 ft. Min. (914 mm)
V1 = 50 ft. Max (15 m)
EXHAUST
RESTRICTOR
V1
Figure 7.8
Figure 7.7
Exhaust restrictors are recommended for these verti-
cally terminated products which have excessive draft.
Exhaust restrictors will compensate for high draft, and
restore visual flame height. If the vent configuration has
a total vertical of 15-50 feet, an exhaust restrictor may
be needed. The exhaust restrictor can be located in the
appliance manual bag.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
29
Two Elbows
V1 Minimum
H Maximum
V2
*
V1 + V2 Min.
90 Elbow
1-1/2 ft.
457 mm
610 mm
914 mm
1.5 m
*
*
*
*
*
*
1/2 ft.
152 mm
457 mm
762 mm
1.1 m
2 ft.
3 ft.
*
1-1/2 ft.
2-1/2 ft.
3-1/2 ft.
4-1/2 ft.
*
5 ft.
*
7 ft.
2.1 m
*
1.4 m
15 ft.
4.6 m
*
H Max. =15 ft. (4.6 m)
V2
* No specific restrictions on this value EXCEPT V1 + V2 + H1 cannot exceed 40 ft. (12.2 m)
V1
H1
Figure 7.9
V1 Minimum
H1 + H2 Maximum
V2
*
V1 + V2 Min.
Three Elbows
90 Elbow
1/2 ft.
1 ft.
152 mm
305 mm
610 mm
1.2 m
*
*
*
*
*
*
1/2 ft.
152 mm
457 mm
762 mm
1.1 m
*
1-1/2 ft.
2-1/2 ft.
3-1/2 ft.
4-1/2 ft.
2 ft.
*
4 ft.
*
6 ft.
1.8 m
*
1.4 m
14 ft.
4.3 m
*
V2
H1 + H2 MAX. =14 ft. (4.6 m)
* No specific restrictions on this value EXCEPT V1 + V2 + H1 + H2 cannot exceed 40 ft. (12.2 m)
H1
H2
V1
INSTALLED
HORIZONTALLY
Figure 7.10
30
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Vent Clearances and Framing
8
A. Pipe Clearances to Combustibles
B. Wall Penetration Framing
WARNING! Risk of Fire! Maintain air space clearance to
vent. DO NOT pack insulation or other combustibles:
Combustible Wall Penetration
Whenever a combustible wall is penetrated, you must
frame a hole for the wall shield firestop. The wall shield
firestop maintains minimum clearances and prevents cold
air infiltration.
• Between ceiling firestops
• Between wall shield firestops
• Around vent system
• The opening must be framed on all four sides using the
same size framing materials as those used in the wall
construction.
Failure to keep insulation or other material away from
vent pipe may cause overheating and fire.
• SLP pipe - A wall shield firestop must be placed on each
side of an interior wall. A minimum 1-1/2 in. (38 mm)
overlap of attached heat shields must be maintained.
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
• SLP heat shield - designed to be used on a wall 4-3/8 in. to 7-5/8
in. (111 mm to 194 mm thick).
• See Section 10.L. for information for regarding the in-
stallation of a horizontal termination cap.
• If wall thickness is less than 4-3/8 the existing heat shields must be
field trimmed. If wall thickness is greater than 7-5/8 in. a DVP-
HSM-B will be required.
Non-Combustible Wall Penetration
Heat
2-1/2 in. (64 mm)
Shields
If the hole being penetrated is surrounded by noncom-
bustible materials such as concrete, a hole with diameter
one in. greater than the pipe is acceptable.
top clearance at
wall shield firestops
3 in. (76 mm)
top clearance
Whenever a non-combustible wall is penetrated, the wall
shield firestop is only required on one side and no heat
shield is necessary.
1 in. (25 mm)
clearance around
vertical sections
1/2 in. (13 mm) bottom
clearance at wall
shield firestops
Wall
Shield
Firestop
10 in.
10 in.
WALL
1 in. (25 mm)
clearance
bottom and sides
Figure 6.1 Horizontal venting clearances to combustible
materials
B
A*
A *
B
38-7/8 in. 37-7/8 in.
* Shows center of vent framing hole for top venting. The center of the hole is
one (1) inch (25.4 mm) above the center of the horizontal vent pipe.
Figure 8.2 Wall Penetration
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
31
C. Install the Ceiling Firestop
A ceiling firestop MUST be used between
floors and attics.
• Frame opening 9 in. x 9 in. (229 mm x 229
mm) whenever the vent penetrates a ceiling/
floor (see Figure 8.3).
ATTIC ABOVE
• Frame the area with the same sized lumber
as used in ceiling/floor joist.
• The ceiling firestop may be installed above or
below the ceiling joists when installed with a
attic insulation shield. It must be under joists
between floors that are not insulated. Refer
to Figure 8.4.
A
• Secure with three fasteners on each side.
WARNING! Risk of Fire! DO NOT pack insu-
lation around the vent. Insulation must be kept
back from the pipe to prevent overheating.
A
A
PIPE
SLP
9 in. (229 mm)
Figure 8.3 Installing Ceiling Firestop
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
3 FASTENERS
PER SIDE
CEILING FIRESTOP
CEILING FIRESTOP
INSTALLED BELOW CEILING
INSTALLED ABOVE CEILING
Figure 8.4 Installing the Attic Shield
32
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
D. Install Attic Insulation Shield
BEND ALL TABS INWARD 90°
TO MAINTAIN CLEARANCE
AND PREVENT INSULATION
FROM FALLING INSIDE
WARNING! Fire Risk. DO NOT allow loose materials or
insulation to touch vent. Hearth & Home Technologies
Inc. requires the use of an attic shield.
The National Fuel Gas Code ANSI Z223.1 and NFPA 54
requires an attic shield constructed of 26 gauge minimum
metal that extends at least 2 in. (51 mm) above insulation.
Attic shields must meet specified clearance and be se-
cured in place.
Flat Ceiling Installation
• Remove one shield from box.
LASER-ETCHED
CUT LINES
INSERT 3
SCREWS
NOTICE: Cut previously installed batt insulation to make
room for the attic insulation shield.
BEND 3 TABS
OUTWARD TO
• Wrap shield around pipe if pipe is already installed in
area to be insulated.
FASTEN TO CEILING
FIRESTOP-BEND
REMAINING TABS
INWARD 90 DEGREES
TO MAINTAIN
• Match the three holes in each side and fasten with three
screws to form a tube.
• Bend three tabs on the bottom of the shield outward to
CLEARANCE
allow attachment to the ceiling firestop.
Figure 8.5 Attic Insulation Shield
• Bend the remaining bottom tabs inward 90° to maintain
the air space between the pipe and the shield. Set the
shield on the ceiling firestop and attach to the firestop.
• Bend all tabs inward 90° around the top of the shield.
These tabs must be used to prevent blown insulation
from getting between the shield and vent pipe, and to
maintain air space clearance.
Vaulted Ceiling Installation
• The attic insulation shield has been laser-etched with cut
lines and ceiling pitches to make field trimming easier.
• Remove one shield from box.
NOTICE: Cut previously installed batt insulation to make
room for the attic insulation shield.
• Cut the attic insulation shield (if application is for vaulted
ceiling) using a laser-etched cut line, to fit your ceiling
pitch. Snip cut edge to recreate 1 in. bend tabs all the
way around the bottom.
• Wrap shield around pipe if pipe is already installed in
area to be insulated.
• Match the three holes in each side and fasten with three
screws to form a tube.
• Bend three tabs on the bottom of the shield outward to
allow attachment to the ceiling firestop.
• Bend the remaining bottom tabs inward 90° to maintain
the air space between the pipe and the shield. Set the
shield on the ceiling firestop and attach to the firestop.
• Bend all tabs inward 90° around the top of the shield.
These tabs must be used to prevent blown insulation
from getting between the shield and vent pipe, and to
maintain air space clearance.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
33
Appliance Preparation
9
A. Securing and Leveling the Appliance
WARNING! Risk of Fire! Prevent contact with:
• Sagging or loose insulation
• Insulation backing or plastic
• Framing and other combustible materials
Block openings into the chase to prevent entry of blown-
in insulation. Make sure insulation and other materials
are secured.
DO NOT notch the framing around the appliance
standoffs.
Failure to maintain air space clearance may cause
overheating and fire.
NOTICE: Failure to ensure that the fireplace opening
is square may result in the decorative front not fitting
properly.
The diagram shows how to properly position, level, and
secure the appliance (see Figure 9.1). Nailing tabs are pro-
vided to secure the appliance to the framing members.
NAILING TABS
1. Venting - refer to Vent Clearances and Framing (Section
8) for hole location.
Figure 9.1 Securing An Appliance
2. Place the appliance into position, making sure to
maintain proper clearance to combustibles.
3. Level the appliance from side to side and front to back. It
is acceptable to use wood shims under the appliance.
4. Fasten the appliance to the floor using the pilot holes
located at the bottom of the appliance.
5. Bend out nailing tabs on each side making sure to keep
the nailing tabs flush with the framing.
6. Using a framing square, make sure that the sides of
the appliance are square to the bottom as shown in
Figure 9.2.
7. Secure the appliance to the framing by using nails
or screws through the nailing tabs. It is acceptable to
use plumber strap to secure the unit to the framing
if necessary. Be sure to maintain all clearances to
combustible material.
90º
Figure 9.2 Proper Positioning and Leveling of an Appliance
34
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Installing Vent Pipe
10
A. Assemble Vent Sections
To attach the first vent component to the starting collars
of the appliance:
• Lock the vent components into place by sliding the pipe
section onto the collar.
• Align the seam of the pipe and seam of collar to allow
engagement. Rotate the vent component to lock into
place. Use this procedure for all vent components. See
Figure 10.1.
Note: Align seams to engage pipe,
then rotate counterclockwise to lock
• Slide the gasket over the first vent section and place it
flush to the appliance. This will prevent cold air infiltration.
Caulk with a minimum of 300ºF continuous exposure
rating may be used to hold the part in place.
Figure 10.1 Adding Venting Components
• Continue adding vent components, locking each
succeeding component into place.
• Ensure that each succeeding vent component is securely
fitted and locked into the preceding component.
Commercial, Multi-family (Multi-level exceeding two sto-
ries), or High-Rise Applications
For Installation into a commercial, multi-family (multi-level
exceeding two stories) or high-rise applications: All outer
pipe joints must be sealed with high temperature silicone,
including the slip section that connects directly to the hori-
zontal termination cap.
• Apply a bead of silicone sealant inside the female outer
pipe joint prior to joining sections. See Figure 10.2
Figure 10.2 High Temperature Silicone Sealant
• Only outer pipes need to be sealed. All unit collar, pipe,
slip section, elbow and cap outer flues shall be sealed
in this manner, unless otherwise stated.
WARNING! Risk of Fire or Explosion! DO NOT break
silicone seals on slip sections. Use care when removing
termination cap from slip pipe. If slip section seals are
broken during removal of the termination cap, vent may
leak.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
35
B. Assemble Slip Sections
C. Securing the Vent Sections
• Slide the inner flue of the slip section into the inner flue of
the pipe section and the outer flue of the slip section over
the outer flue of the pipe section. See Figure 10.3.
• Vertical runs of pipe must be supported every 8 ft. (2.44 m).
• Horizontal sections must be supported every 5 feet
(1.52 m).
• Slide together to the desired length.
• Vent supports or plumbers strap (spaced 120º apart)
may be used to support. See figures 10.5 and 10.6.
• Wall shield firestops may be used to provide horizontal
support.
• Ceiling firestops have tabs that may be used to provide
vertical support.
WARNING! Risk of Fire, Explosion or Asphyxiation!
Improper support may allow vent to sag and separate.
Use vent run supports and connect vent sections per in-
stallation instructions. DO NOT allow vent to sag below
connection point to appliance.
Pilot hole
Figure 10.3 Slip Section Pilot Holes
• Maintain a 1-1/2 in. (38 mm) overlap between the slip
section and the pipe section.
• Secure the pipe and slip section with two screws no
longer than 1/2 in. (13 mm), using the pilot holes in the
slip section. See Figure 10.4.
Figure 10.5 Securing Vertical Pipe Sections
Figure 10.4 Screws into Slip Section
• Continue adding pipe as necessary following instructions
in “Assembling Pipe Sections.”
NOTICE: If slip section is too long, the inner and outer flues
of the slip section can be cut to the desired length.
NOTICE: When installing a vent system with an HRC
termination cap, all pipe system joints shall be sealed using
a high temperature silicone sealant.
Figure 10.6 Securing Horizontal Pipe Sections
• Apply a bead of silicone sealant inside the female outer
pipe joint prior to joining sections.
• Only outer pipes are sealed, sealing the inner flue is not
required.
• All unit collar, pipe, slip section, elbow and cap outer
flues shall be sealed.
36
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
• Lower the support box through the hole in the roof until its
bottom is at least 2 in. (51 mm) below the ceiling (Figure
10.9).
D. Disassemble Vent Sections
• Rotate either section (see Figure 10.7) so the seams on
both pipe sections are aligned as shown in Figure 10.8.
• Level the support box both vertically and horizontally
and temporarily tack it in place through the inside walls
into the roof sheathing.
• Pull carefully to separate the pieces of pipe.
• Use tin snips to cut the support box from the top corners
down to the roof line and fold the resulting flaps to the
roof. See Figure 10.10.
• Nail the flaps to the roof AFTER running a bead of non
hardening sealant between the flaps and the roof.
WARNING! Risk of Fire! Clean out ALL materials from
inside the support box and complete the vertical vent run
and termination.
LEVEL
Figure 10.7 Rotate Seams for Disassembly
CATHEDRAL CEILING
SUPPORT BOX
2 in. (51 mm) MIN. BELOW
FINISHED CEILING
CUT HOLE 1/8 in. (3 mm)
GREATER IN SIZE THAN
PATTERN OF SUPPORT
BOX AS IT IS PROJECTED
ONTO ROOF LINE
Figure 10.8 Align and Disassemble Vent Sections
Figure 10.9
E. Installing Decorative Ceiling Components
A decorative ceiling thimble can be installed on a flat ceil-
ing through which the vent passes. The decorative ceiling
thimble is used to cover the firestop.
• Seal the gap between the vent pipe and firestop using
high temperature silicone to prevent cold air infiltration.
• Install the decorative ceiling thimble by sliding it up to
the ceiling and attaching it using the provided screws.
Adecorative cathedral ceiling support box can be installed
on a cathedral ceiling through which the vent passes.
• Use a plumb-bob to mark the center line of the venting
system on the ceiling and drill a small hole through the
ceiling and roof at this point. Locate the hole and mark
the outline of the cathedral ceiling support box on the
outside roof.
Figure 10.10
• Remove shingles or other roof covering as necessary to
cut the rectangular hole for the support box. Cut the hole
1/8 in. (3 mm) larger than the support box outline.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
37
F. Installing Metal Roof Flashing
• See minimum vent heights for various pitched roofs
(Figure 10.11) to determine the length of pipe to extend
through the roof.
CAULK
• Slide the roof flashing over the pipe sections extending
through the roof as shown in Figure 10.12.
HORIZONTAL
OVERHANG
2 FT.
20 INCHES MIN.
VERTICAL
MIN.
WALL
LOWEST
DISCHARGE
OPENING
Figure 10.12
GAS DIRECT VENT
TERMINATION CAP
G. Assemble and Install Storm Collar
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during instal-
lation. Sheet metal edges are sharp.
X
12
ROOF PITCH
IS X/ 12
• Connect both halves of the storm collar with two screws
(see Figure 10.13).
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
• Wrap the storm collar around the exposed pipe section
closest to the roof and align brackets. Insert a bolt
(provided) through the brackets and tighten the nut to
complete the storm collar assembly. Make sure the collar
is tight against the pipe section.
Roof Pitch
H (Min.) Ft.
Flat to 6/12........................................1.0*
Over 6/12 to 7/12............................1.25*
Over 7/12 to 8/12..............................1.5*
Over 8/12 to 9/12..............................2.0*
Over 9/12 to 10/12............................. 2.5
Over 10/12 to 11/12......................... 3.25
Over 11/12 to 12/12........................... 4.0
Over 12/12 to 14/12........................... 5.0
Over 14/12 to 16/12........................... 6.0
Over 16/12 to 18/12........................... 7.0
Over 18/12 to 20/12........................... 7.5
Over 20/12 to 21/12........................... 8.0
• Slide the assembled storm collar down the pipe section
until it rests on the roof flashing (see Figure 10.14).
• Caulk around the top of the storm collar (see Figure 10.15).
* 3 foot minimum in snow regions
Figure 10.11 Minimum Height From Roof To Lowest Discharge
Opening
Figure 10.13 Assembbling the Storm Collar
NOTICE: Failure to properly caulk the roof flashing and
pipe seams may permit entry of water.
• Caulk the gap between the roof flashing and the outside
diameter of the pipe.
• Caulk the perimeter of the flashing where it contacts the
roof surface. See Figure 10.12.
• Caulk the overlap seam of any exposed pipe sections
that are located above the roof line.
Figure 10.14 Assembling the Storm Collar Around the Pipe
38
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
H. Installing Vertical Termination Cap
J. Heat Shield Requirements for Horizontal
Termination
• Attach the vertical termination cap by sliding the inner
collar of the cap into the inner flue of the pipe section
while placing the outer collar of the cap over the outer
flue of the pipe section.
WARNING! Risk of Fire! To prevent overheating and fire,
heat shields must extend through the entire wall thick-
ness.
• Secure the cap by driving three self-tapping screws
(supplied) through the pilot holes in the outer collar of the
cap into the outer flue of the pipe (see Figure 10.15).
• DO NOT remove the heat shields attached to the
wall shield firestop and the horizontal termination cap
(shown in Figure 10.17).
• Heat shields must overlap 1-1/2 in. (38 mm) mini-
mum.
TERMINATION CAP
There are two sections of the heat shield. One section
is factory-attached to the wall shield firestop. The other
section is factory-attached to the cap. See Figure 10.17.
If the wall thickness does not allow the required 1-1/2 in.
(38 mm) heat shield overlap when installed, an extended
heat shield must be used.
• If the wall thickness is less than 4 in./102 mm (DVP)
or 4-3/8 in./ 111 mm (SLP), the heat shields on the cap
and wall shield firestop must to be trimmed. A minimum
1-1/2 in. (38 mm) overlap MUST be maintained.
(1 of 3)
• Use an extended heat shield if the finished wall thickness
is greater than 7-1/4 in. (184 mm).
STORM
COLLAR
• The extended heat shield may need to be cut to length
maintaining sufficient length for a 1-1/2 in. (38 mm)
overlap between heat shields.
SCREWS
CAULK
• Attach the extended heat shield to either of the existing
heat shields using the screws supplied with the extended
heat shield. Refer to vent components diagrams in the
back of this manual.
Figure 10.15
• Rest the small leg on the extended heat shield on top
of the pipe section to properly space it from the pipe
section.
I. Installing Decorative Wall Components
A decorative wall thimble can be installed on wall through
which the vent passes. The decorative wall thimble is used
to cover the firestop.
Important Notice: Heat shields may not be field constructed.
• Slide the decorative wall thimble over the last section of
horizontal pipe before connecting the termination cap to
the pipe.
• Once the pipe section and the termination cap have been
connected, slide the wall thimble up to the interior wall
surface and attach with screws provided. See Figure
10.16.
Figure 10.16 Wall Thimble
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
39
K. Install Horizontal Termination Cap
WARNING! Risk of Fire! The telescoping flue section
of the termination cap MUST be used when connecting
vent.
• 1-1/2 (38 mm) minimum overlap of flue telescoping
section is required.
Failure to maintain overlap may cause overheating and
fire.
• Vent termination must not be recessed in the wall. Siding
may be brought to the edge of the cap base.
• Flash and seal as appropriate for siding material at
outside edges of cap.
• When installing a horizontal termination cap, follow
the cap location guidelines as prescribed by current
ANSI Z223.1 and CAN/CGA-B149 installation codes
and refer to Section 6 of this manual.
CAUTION! Risk of Burns! Local codes may require in-
stallation of a cap shield to prevent anything or anyone
from touching the hot cap.
NOTICE: For certain exposures which require superior
resistance to wind-driven rain penetration, a flashing kit and
HRC caps are available. When penetrating a brick wall, a
brick extension kit is available for framing the brick.
Note: When using termination caps with factory-supplied heat
shield attached, no additional wall shield firestop is required on
the exterior side of a combustible wall.
HEAT SHIELD OR
HEAT SHIELD
EXTENDED
HEAT SHIELD
1-1/2 IN. (38 MM) MIN.
OVERLAP
WALL SHIELD
FIRESTOP
SLIP SECTION
CAN BE EXTENDED
INNER VENT
SHEATHING
OUTER VENT
INTERIOR
EXTERIOR
Figure 10.17 Venting through the wall
40
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Gas Information
11
A. Fuel Conversion
C. Gas Connection
• Make sure the appliance is compatible with available gas
types.
• Refer to Reference Section 16 for location of gas line
access in appliance.
• Conversions must be made by a qualified service
technician using Hearth & Home Technologies specified
and approved parts.
• Gas line may be run through knockout(s) provided.
• The gap between supply piping and gas access hole
may be caulked with caulk with a minimum of 300ºF
continuous exposure rating or stuffed with non-
combustible, unfaced insulation to prevent cold air
infiltration.
B. Gas Pressure
• Optimum appliance performance requires proper input
pressures.
• Ensure that gas line does not come in contact with outer
wrap of the appliance. Follow local codes.
• Gas line sizing requirements will be determined in ANSI
Z223.1 National Fuel Gas Code in the USA and CAN/
CGA B149 in Canada.
• Pipe incoming gas line into valve compartment.
• Connect incoming gas line to the 1/2 in. (13 mm)
connection on manual shutoff valve.
• Pressure requirements are:
WARNING! Risk of Fire or Explosion! Support control
when attaching pipe to prevent bending gas line.
Gas Pressure
Minimum inlet pressure
Maximum inlet pressure
Manifold pressure
Natural Gas
5.0 in. w.c.
14.0 in. w.c.
3.5 in. w.c.
Propane
11.0 in. w.c.
14.0 in. w.c.
10.0 in. w.c.
• A small amount of air will be in the gas supply lines.
WARNING! Risk of Fire or Explosion! Gas build-up dur-
ing line purge could ignite.
WARNING! Risk of Fire/Explosion! High pressure will
damage valve. Low pressure may cause explosion.
• Purge should be performed by qualified service
technician.
• Ensure adequate ventilation.
• Ensure there are no ignition sources such as sparks
or open flames.
• Verify inlet pressures. Verify minimum pressures when
other household gas appliances are operating.
• Install regulator upstream of valve if line pressure is
greater than 1/2 psig.
Light the appliance. It will take a short time for air to purge
from lines. When purging is complete the appliance will
light and operate normally.
WARNING
WARNING! Risk of Fire, Explosion or Asphyxiation!
Check all fittings and connections with a non-corrosive
commercially available leak-check solution. DO NOT use
open flame. Fittings and connections could have loos-
ened during shipping and handling.
Fire Risk.
Explosion Hazard.
High pressure will damage valve.
• Disconnect gas supply piping BEFORE
pressure testing gas line at test pressures
above 1/2 psig.
WARNING! Risk of Fire! DO NOT change valve settings.
This valve has been preset at the factory.
• Close the manual shutoff valve BEFORE
pressure testing gas line at test pressures
equal to or less than 1/2 psig.
D. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
Note: Have the gas supply line installed in accordance with
local codes, if any. If not, follow ANSI 223.1. Installation
should be done by a qualified installer approved and/or
licensed as required by the locality. (In the Commonwealth
of Massachusetts installation must be performed by a
licensed plumber or gas fitter).
When installing above 2000 feet elevation:
• In the USA: Reduce burner orifice 4% for each 1000 feet
above 2000 feet.
• In the CANADA: Reduce burner orifice 10% for elevations
between 2000 feet and 4500 feet. Above 4500 feet,
consult local gas utility.
Note: A listed (and Commonwealth of Massachusetts ap-
proved) 1/2 in. (13 mm) T-handle manual shut-off valve
and flexible gas connector are connected to the 1/2 inch
(13 mm) control valve inlet.
• If substituting for these components, please consult
local codes for compliance.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
41
Electrical Information
12
C. Optional Accessories Requirements
A. Wiring Requirements
• This appliance may be used with a wall switch, wall
mounted thermostat and/or a remote control.
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition or the Canadian Electric
Code CSA C22.1.
Wiring for optional Hearth & Home Technologies approved
accessories should be done now to avoid reconstruction.
Follow instructions that come with those accessories.
• Wire the appliance junction box to 110-120 VAC. This
is required for use of optional accessories and proper
operation of the appliance (Intellifire ignition).
D. Electrical Service and Repair
WARNING! Risk of Shock! Label all wires prior to dis-
connection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper
operation after servicing.
• A 110-120 VAC circuit for this product must be protected
with ground-fault circuit-interrupter protection, in compliance
with the applicable electrical codes, when it is installed in
locations such as in bathrooms or near sinks.
WARNING! Risk of Shock! Replace damaged wire with
type 105° C rated wire. Wire must have high temperature
insulation.
• Low voltage and 110 VAC voltage cannot be shared
within the same wall box.
WARNING! Risk of Shock or Explosion! DO NOT wire
110V to the valve or to the appliance wall switch. Incorrect
wiring will damage controls.
B. Intellifire Ignition System Wiring
• Wire the appliance junction box to 110 VAC for proper
operation of the appliance.
WARNING! Risk of Shock or Explosion! DO NOT wire
IPI controlled appliance junction box to a switched circuit.
Incorrect wiring will override IPI safety lockout.
• Refer to Figure 12.2, Intellifire Pilot Ignition (IPI) Wiring
Diagram.
• This appliance is equipped with an Intellifire control valve
which operates on a 3 volt system.
• Plug the 3-volt AC transformer into the appliance junction
box to supply power to the unit OR install two D cell
batteries (not included) into the battery pack before use.
NOTICE: Batteries should not be placed in the battery
pack while using the transformer. Remove batteries before
using the transformer, and unplug the transformer before
installing the batteries. Battery polarity must be correct or
module damage will occur.
42
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
INTERMITTENT
PILOT IGNITOR
IGNITION
MODULE 3 VAC
I
S
TRANSFORMER
3 VAC
ORANGE
WHITE
GROUND TO
FIREPLACE
CHASSIS
PLUG IN
BLACK
RED
WIRES
(TO BROWN)
BATTERY PACK
THERMOSTAT
WIRE ASSEMBLY
VALVE
Figure 12.1 Intellifire Ignition Wiring Diagram with Wall Switch or Thermostat
INTERMITTENT
PILOT IGNITOR
IGNITION
MODULE 3 VAC
NOTE: 1. Ignition module, valve, pilot, and
wall switch operate on 3 volts. 120 VAC is
required at junction box unless equipped
with battery back-up.
I
S
TRANSFORMER
3 VAC
ORANGE
WHITE
GROUND TO
FIREPLACE
CHASSIS
PLUG IN
WIRES
(TO BROWN)
BATTERY PACK
REMOTE
PLUG IN
VALVE
Figure 12.2 Intellifire Ignition Wiring Diagram with Remote Receiver
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
43
E. Junction Box Installation
The junction box must be wired from the INSIDE of the
appliance:
• Determine which side of the appliance the junction box
is located on.
ROMEX CONNECTORS
• Pull the electrical wires from outside the appliance through
the knockout making sure to use a Romex connector to
fasten the electrical wires to the unit.
• Pull enough wire into the valve compartment to easily
reach the junction box location.
• Remove the screw attaching the junction box to the junction
box bracket and set it aside.
• Route the wire through the knockout in the junction box
bracket.
• Wire the junction box and reattach it to the bracket by
inserting the tab in the slot and attaching with screw
previously removed. Ensure that a Romex connector is
used to attach the electrical wires to the junction box.
NOTICE: DO NOT wire
110 VAC to wall switch.
Figure 12.4 Junction Box Detail
F. Wall Switch Installation for Fan (Optional)
If the box is being wired to a wall mounted switch for use
with a fan (See Figure 12.5):
SWITCH
MINIMUM 14-3 AWG
WITH GROUND
• The power supply for the appliance must be brought into
a switch box.
RED
BLACK
WHITE
GREEN
BLACK
WHITE
GREEN
JUNCTION BOX
• The power can then be supplied from the switch box
to the appliance using a minimum of 14-3 with ground
wire.
POWER
SUPPLY
WIRES
SWITCH BOX
• At the switch box connect the black (hot) wire and red
(switch leg) wire to the wall switch as shown.
KNOCKOUT
• At the appliance connect the black (hot), white (neutral)
and green (ground) wires to the junction box as
shown.
RED
Figure 12.5 Junction Box Wired to Wall Switch or BC10
• Add a 1/4 in. insulated female connector to the red
(switch leg) wire, route it through the knockout in the face
of the junction box, and connect to the top fan switch
connector (1/4 in. male) as shown.
44
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Finishing
13
A. Mantel and Wall Projections
WARNING! Risk of Fire! Comply with all minimum clear-
ances as specified. Framing closer than the minimums list-
ed must be constructed entirely of noncombustible materi-
als (i.e., steel studs, concrete board, etc.) Failure to comply
could cause fire.
1/2 in.
Min.
TOP VIEW
FIREPLACE
OPENING
3-1/4 in.
Min.
Unlimited
Note: All
measurements
in inches.
CEILING
Note: Clearance from opening to
perpendicular wall.
MAX.
12
Figure 13.3 Combustible Mantel Leg or Wall Projections
(Acceptable on both sides of opening)
11
10
9
8
32
B. Facing Material
7
6
5
• Metal front faces may be covered with non-combustible
materials only.
MIN.
13
4
12
11
3
10
9
• Facing and/or finishing materials must not interfere with
air flow through louvers, operation of louvers or doors,
or access for service.
8
7
6
5
4
• Facing and/or finishing materials must never overhang
TOP OF HOOD OR FIREPLACE OPENING
into the glass opening.
• Observe all clearances when applying combustible
materials.
• Seal joints between the finished wall and appliance top
and sides using a 300 °F minimum sealant. Refer to
Figure 13.3.
Figure 13.1 Minimum Vertical and Maximum Horizontal
Dimensions of Combustibles
WARNING! Risk of Fire! DO NOT apply combustible
materials beyond the minimum clearances. Comply with
all minimum clearances to combustibles as specified in
this manual. Overlapping materials could ignite and will
interfere with proper operation of doors and louvers.
Note: All
measurements
in inches.
CEILING
MAX.
18
Finish wall material may be
combustible - Top and Sides
12
11
10
32
9
0 in.
MIN.
14
8
8
7
6
7
6
5
4
3
5
2
1
4
TOP OF HOOD OR FIREPLACE OPENING
0 in.
0 in.
High Temperature Sealant (300° F/149° C min.)
Top and Side Seal Joint
Figure 13.2 Minimum Vertical and Maximum Horizontal
Dimensions of Non-Combustibles
Figure 13.4 Noncombustible Facing Diagram
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
45
C. Splatter Guard
The splatter guard is a piece of corrugated material used
to protect the appliance during the installation process
before finishing work on the whole hearth is complete.
Splatter guards must be removed before appliance is
fired.
WARNING
Risk of Fire
• Splatter guard must be removed before lighting
appliance.
• Before splatter guard is installed:
Close ball valve to prevent accidental lighting.
Step 1. Turn off gas to valve. Red gas shutoff knob is
located on ball valve. Disconnect the 3 volt transformer
from the junction box. See Figure 13.5.
Figure 13.7 Folding of Right and Left Sides of Splatter Guard
Step 4. Center the splatter guard in front of the unit as
shown in Figure 13.8. Place the splatter guard in the unit
by guiding the top flap into proper position and then con-
tinuing to guide the tabs on the side flaps into the top slot
on the left and right sides of the appliance. The top slot
is indicated in Figure 13.9 Take care not to bend or break
off the tabs.
Figure 13.5 Preparation to Install Splatter Guard
To install the Splatter Guard:
Step 2. Crease flap on top side of splatter guard using the
scored line as the guide. See Figure 13.5.
Figure 13.8 Installation of Splatter Guard
TOP SLOT
Figure 13.6 Folding Top Flap
Step 3. Crease flaps on left and right sides of splatter guard
using the scored line as the guide. See Figure 13.6.
Figure 13.9 Top slot
46
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Step 5. Fold bottom flap along score line as indicated
in Figure 13.10 and tuck into valve access area of appli-
ance. Splatter guard should fit securely on front of unit.
Figure 13.13 Securing Tabs Inside Front of Splatter Guard
Once plumbing and wiring are complete on the fireplace,
the lower access panel may be closed until the time that the
splatter guard must be removed for firing the appliance.
Figure 13.10 Folding Bottom Flap
Figure 13.14 Splatter Guard with Lower Access Panel Open
To Close the Lower Access Panel:
Figure 13.11 Prepare to Open Lower Access Panel
Carefully disengage the tabs from the square holes and
bend the access panel to its original position. Bend the
center bottom flap and insert it into the bottom of the ap-
pliance.
Step 6. To open lower access panel of splatter guard,
place one hand above score line and place two fingers
from other hand in the round holes on the front of the
splatter guard. See Figure 13.11. Pull out and fold up
the panel as shown in Figure 13.12. Disengage the tabs
on left and right bottom of splatter guard and fit them into
the square holes. The tabs are now inside the front of
the splatter guard; carefully bend them down. See Figure
13.12.
Figure 13.15 Splatter Guard with Lower Access Panel Closed
To Remove the Splatter Guard:
Carefully grab splatter guard on or near the vertical center
on the left and right sides. Pull outward gently, but firmly,
taking care not to tear or remove the inserted tabs.
Figure 13.12 Opening Lower Access Panel
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
47
Appliance Setup
14
A. Remove Fixed Glass Assembly
E. Lava Rock, Mystic Embers and Glowing
Ember Placement
See Section 14G.
WARNING! Risk of Explosion! Follow ember placement
instructions in manual. DO NOT place embers directly over
burner ports. Replace ember material annually. Improperly
placed embers interfere with proper burner operation.
B. Remove the Shipping Materials
Remove shipping materials from inside or underneath the
firebox.
Placing the Ember Material
C. Clean the Appliance
Ember material is shipped with this gas appliance. To place
the ember material:
Clean/vacuum any sawdust that may have accumulated
inside the firebox or underneath in the control cavity.
• Embers CANNOT be placed directly over ports. Care
should be taken not to cover the lighting trail of ports
(from back to front).
• When placing Glowing Embers® onto the burner care
should be taken so that the ports are not covered. Place
the dime-size ember pieces just in front of the port trail,
but not on or in between the ports (see Figure 14.1).
Failure to follow this procedure will likely cause lighting
and sooting problems.
D. Accessories
Install approved accessories per instructions included
with accessories. Contact your dealer for a list of ap-
proved accessories.
WARNING! Risk of Fire and Electric Shock! Use ONLY
Hearth & Home Technologies-approved optional acces-
sories with this appliance. Using non-listed accessories
could result in a safety hazard and will void the warranty.
DO NOT PLACE GLOWING
EMBERS IN THE CIRCLED AREA
= MYSTIC EMBERS
= GLOWING EMBERS
Figure 14.1 Placement of Embers
• Place Lava Rock on areas of base pan away from the
burner. Use this material to give the appliance a realistic
ash bed.
• Save the remaining ember materials for use during
appliance servicing. The embers provided should be
enough for 3 to 5 applications.
• Place Mystic Embers on burner and away from the flames
to give the appliance a realistic ash bed.
48
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
F. Install the Log Assembly
Log Set Assembly: LOGS-2126
Models: ST-550T-IPI. GDST3831I
PILOT
1
3
2
STEP 1. CAUTION! Logs are fragile! Carefully remove the microfoam and packaged logs from the inside of the
fireplace. See Figure 2. Remove the Mystic Embers and mineral wool and set aside. Remove the packaging from the
logs and inspect the logs for damage. To ensure that you are working on the correct side of the appliance, verify that the
pilot is on the left side. See Figure 2.
1
1
STEP 2. Log #1 (SRV2126-700): Place Log #1 so that the large cutout on the bottom of the log fits over the pilot shield
as shown in Figure 4. The hole in the bottom of Log #1 interlocks with the head of the shoulder screw on the burner.
2
2
STEP 3. Log #2 (SRV2126-701): Place Log #2 as shown in Figure 6 using the shoulder bolt as a guide to align the
log in the proper orientation to the port pattern on the burner.
2126-935
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
49
NOTCH
3
STEP 4. Log #3 (SRV2126-702): Place Log #3 (1 of 2 identical logs) as shown in Figure 7. Align the “Y” of Log #3
with the cutout on Log #2. Rest the bottom of Log #3 in the notch on the ledge on the back side of the basepan.
3
NOTCH
1
3
2
STEP 5. Log #3 (SRV2126-702): Place the remaining Log #3 (2 of 2 identical logs) into the fireplace so that the bot-
tom of the log rests in the notch on the ledge on the front side of the basepan. Then place the top of Log #3 on top of Log
#1 so that the flat spot is hidden. The complete log set assembly is shown in Figure 11. See the fireplace Owner’s Manual
for instructions on how to place the Mystic Embers and Mineral Wool.
50
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
G. Fixed Glass Assembly
H. Install Trim Kits and Surrounds
• Install optional trim kits and/or surrounds using the
instructions included with the accessory.
Removing Fixed Glass Assembly
WARNING! Risk of Asphyxiation! Handle fixed glass
assembly with care. Inspect the gasket to ensure it is
undamaged and inspect the glass for cracks, chips or
scratches.
• Use non-combustible materials to cover the gap between
the sheet rock and the appliance (if desired).
• DO NOT strike, slam or scratch glass.
I. Air Shutter Setting
• DO NOT operate fireplace with glass removed, cracked,
broken or scratched.
This appliance has an adjustable air shutter (which con-
trols the primary air) factory set for the minimum vertical
vent run (see Figure 12.15). If your installation has more
than the minimum required vertical vent length, adjust-
ment of the air shutter may be necessary to obtain opti-
mal flame appearance. This should be adjusted by a
qualified installer at the time of installation.
• Replace as a complete assembly.
Removing Fixed Glass Assembly
• Pull the two glass assembly latches out of the groove on
the glass frame (see Figure 14.3).
• Remove glass door from the bracket on the top of the
firebox.
Air Shutter Settings
Replacing Fixed Glass Assembly
NG
LP
• Replace the glass door on the appliance.
Burner
1/8 in.
3/8 in.
• Pull out and latch the two glass assembly latches into
the groove on the glass frame.
• Make sure both sides are replaced properly.
GLASS
ASSEMBLY
LATCHES
(BOTH BOTTOM
AND TOP)
Figure 14.3 Fixed Glass Assembly
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
51
Troubleshooting
15
With proper installation, operation, and maintenance your gas appliance will provide years of trouble-free service. If you
do experience a problem, this troubleshooting guide will assist a qualified technician in the diagnosis of a problem and the
corrective action to be taken. This troubleshooting guide can only be used by a qualified technician. Contact your dealer to
arrange a service call by a qualified technician.
A. Intellifire Ignition System
Symptom
Possible Cause
Corrective Action
1. Pilot won’t light.
The ignitor/module
makes noise, but no
spark.
a. Incorrect wiring.
Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor
are connected to correct terminals on module and pilot assembly.
b. Loose connections or electrical
shorts in the wiring.
Verify no loose connections or electrical shorts in wiring from
module to pilot assembly. Verify connections underneath pilot as-
sembly are tight; also verify connections are not grounding out to
metal chassis, pilot burner, pilot enclosure, mesh screen if present,
or any other metal object.
c. Ignitor gap is too large.
d. Module.
Verify gap of igniter to right side of pilot hood. The gap should be
approximately .17 in. or 1/8 in. (3 mm).
Turn ON/OFF rocker switch or wall switch to OFF position. Remove
ignitor wire “I” from module. Place a grounded wire about 3/16 in. (5
mm) away from “I” terminal on module. Place ON/OFF rocker switch
or wall switch in ON position. If there is no spark at “I” terminal
module must be replaced. If there is a spark at “I” terminal, module
is fine. Inspect pilot assembly for shorted sparker wire or cracked
insulator around electrode. Replace pilot if necessary.
2. Pilot won’t light,
there is no noise or
spark.
a. No power or transformer installed
incorrectly.
Verify that transformer is installed and plugged into module. Check
voltage of transformer under load at spade connection on module
with ON/OFF switch in ON position. Acceptable readings of a good
transformer are between 3.2 and 2.8 volts AC.
b. A shorted or loose connection in wir- Remove and reinstall the wiring harness that plugs into module.
ing configuration or wiring harness. Verify there is a tight fit. Verify pilot assembly wiring to module. Re-
move and verify continuity of each wire in wiring harness. Replace
any damaged components.
c. Improper wall switch wiring.
d. Module not grounded.
Verify that 110/VAC power is “ON” to junction box.
Verify black ground wire from module wire harness is grounded to
metal chassis of appliance.
e. Module.
Turn ON/OFF rocker switch or wall switch to OFF position. Re-
move ignitor wire “I” from module. Place ON/OFF rocker switch
or wall switch in ON position. If there is no spark at “I” terminal
module must be replaced. If there is a spark at “I” terminal, module
is fine. Inspect pilot assembly for shorted sparker wire or cracked
insulator around electrode.
3. Pilot sparks, but
Pilot will not light.
a. Gas supply.
Verify that incoming gas line ball valve is “open”. Verify that inlet
pressure reading is within acceptable limits, inlet pressure must
not exceed 14 in. W.C.
b. Ignitor gap is incorrect.
c. Module is not grounded.
Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in (3 mm).
Verify module is securely grounded to metal chassis of appliance.
d. Module voltage output / Valve/Pilot Verify battery voltage is at least 2.7 volts. Replace batteries if volt-
solenoid ohms readings. age is below 2.7.
52
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
Intellifire Ignition System - (continued)
Symptom
Possible Cause
Corrective Action
a. A shorted or loose connection in flame
Verify all connections to wiring diagram in manual. Verify
connections underneath pilot assembly are tight. Verify
connections are not grounding out to metal chassis, pilot
burner, pilot enclosure or screen if present, or any other
metal object.
4. Pilot lights but contin-
ues to spark, and main
burner will not ignite.
(If the pilot continues
to spark after the
pilot flame has been lit,
flame rectification has
not occurred.)
sensing rod.
b. Poor flame rectification or contaminated With fixed glass assembly in place, verify that flame is en-
flame sensing rod.
gulfing flame sensing rod on left side of pilot hood. Flame
sensing rod should glow shortly after ignition. Verify cor-
rect pilot orifice is installed and gas inlet is set to pressure
specifications. Polish flame sensing rod with fine steel wool
to remove any contaminants that may have accumulated
on flame sensing rod.
c. Module is not grounded.
Verify module is securely grounded to metal chassis of
appliance. Verify that wire harness is firmly connected to
the module.
d. Damaged pilot assembly or contami-
Verify that ceramic insulator around the flame sensing rod
is not cracked, damaged, or loose. Verify connection from
flame sensing rod to white sensor wire. Polish flame sens-
ing rod with fine steel wool to remove any contaminants
that may have accumulated on flame sensing rod. Verify
continuity with a multimeter with ohms set at lowest range.
Replace pilot if any damage is detected.
nated flame sensing rod.
e. Module.
Turn ON/OFF rocker switch or wall switch to OFF position.
Remove ignitor wire “I” from module. Place ON/OFF rocker
switch or wall switch in ON position. If there is no spark at
“I” terminal module must be replaced. If there is a spark at
“I” terminal, module is fine.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
53
Reference Materials
16
A. Appliance Dimension Diagram
Dimensions are actual appliance dimensions. Use for reference only. For framing dimensions and clearances refer to Section 5.
J
K
ELECTRICAL
ACCESS
L
N
C D
GAS LINE
ACCESS
F
i
E
A
M
G
H
B
LEFT VIEW
FRONT VIEW
RIGHT VIEW
Location
Inches Millimeters
Location
Inches
31-1/8
37-5/8
21
Millimeters
791
H
I
4-1/4
1-1/2
8
108
38
A
B
C
D
E
F
956
J
203
222
876
406
794
533
K
L
8-3/4
34-1/2
16
30-1/4
1
768
25
M
N
2-1/8
4-1/8
54
31-1/4
G
105
Figure 16.1 See-Through Dimensions
54
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
B. Vent Components Diagrams
6-1/2 in.
165 mm
6-1/2 in.
165 mm
6-1/2 in.
165 mm
8-3/4 in.
222 mm
9-1/4 in.
235 mm
6 in.
152 mm
6-5/8 in.
168 mm
6-5/8 in.
168 mm
SLP45
45° Elbow
9-7/8 in.
251 mm
SLP90
90° Elbow
Effective
Height/
Length
Effective Height/Length
Pipe
SLP4
inches
4
mm
102
152
SLP6
6
SLP12
12
305
SLP PIPE
SLP24
24
610
SLP36
36
914
EFFECTIVE HEIGHT/
LENGTH
SLP48
48
1219
51 - 152
51 - 305
610
SLP6A
2 - 6
2 - 12
24
SLP-FLEX-PIPE
SLP12A
SLP-FLEX-2
SLP-FLEX-3
SLP-FLEX-5
SLP-FLEX-10
10-7/8 in.
276 mm
36
914
60
1524
3048
120
1-1/2 in.
38 mm
8-7/8 in.
225 mm
SLP-HVS
Horizontal Pipe
Support
8-11/16 in.
220 mm
12 in.
305 mm
8-11/16 in.
220 mm
1-1/2 in.
38 mm
12 in.
305 mm
5-1/2 in.
146 mm
SLP-WS
SLP-FS
Wall Shield Firestop
Ceiling Firestop
Figure 16.2 SLP Series Vent Components
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
55
B. Vent Components Diagrams (continued)
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm). The heat shield is designed to be
used on a wall 4 in. to 7-1/4 in. (102 mm to 184 mm) thick. If wall thickness is less than 4 in. (102 mm)
the existing heat shields must be field trimmed. If wall thickness is greater than 7-1/4 in. (184 mm) a
DVP-HSM-B will be required.
8 in.
(203 mm)
Heat
Shield
15-1/8 in.
(384 mm)
Minimum
Effective Length
Maximum
Effective Length
Term Cap
Trap1
Max
3-1/8 in.
79 mm
4-3/4 in.
121 mm
9-1/4 in.
235 mm
Effective
Length
12 in.
(305 mm)
5-1/4 in.
133 mm
Trap2
SLP-TRAP
Horizontal Termination Cap
6-3/8 in.
163 mm
4-3/16 in.
106 mm
6-11/16 in.
(169 mm)
3-15/16 in.
(101 mm)
3-15/16 in.
(101 mm)
3-13/16 in.
(97 mm)
4-5/8 in.
117 mm
4 in.
102 mm
5-1/16 in.
(128 mm)
5-1/16 in.
128 mm
8-1/8 in.
206 mm
8 in.
(203 mm)
SL-2DVP
Adapter
DVP-2SL
Adapter
26 in.
660 mm
14-7/16 in.
367 mm
DVP-HSM-B
Extended Heat Shield
2-5/16 in.
59 mm
14-7/16 in.
367 mm
SLP-WT-BK
Wall Thimble-Black
9 in.
12-1/2 in.
(318 mm)
(229 mm)
2-3/4 in.
(70 mm)
12 in.
305 mm
11-1/2 in.
(292 mm)
12-1/2 in.
318 mm
12-1/4 in.
(311 mm)
16 in.
(406 mm)
8-1/16 in.
205 mm
PVK-80
(For use with IPI and DSI appliances only.)
SLP-TVHW
Vertical
Termination Cap
Figure 16.3 SLP Series Vent Components
56
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
B. Vent Components Diagrams (continued)
13 in.
14 in.
330 mm
356 mm
1-5/16 in.
34 mm
13 in.
330 mm
10-9/16 in.
269 mm
SLP-DCF-BK
Ceiling Firestop
Black
SLP-CCS-BK
Cathedral Ceiling
Support Box-Black
14-1/16 in.
357 mm
6-11/16 in.
169 mm
7-1/4 in.
(184 mm)
1 in.
(25 mm)
10-3/4 in.
273 mm
14 in.
356 mm
7-1/2 in.
192 mm
14 in.
(356 mm)
SLP-FLEX-TRAP
Horizontal
Termination Kit
3/8 in. (10 mm)
1 in. (25 mm)
10-11/16 in.
271mm
7-3/4 to 10-3/8 in.
(197 to 264 mm)
DVP-FBHT
Horizontal
Termination Cap
28-1/2 in.
724 mm
13-1/2 in.
343 mm
DVP-FBHT
DVP-FBHT
SL-2DVP
SLP90
SLK-SNKD
Snorkel
Termination Cap
ASSEMBLY
Figure 16.4 SLP Series Vent Components
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
57
B. Vent Components Diagrams (continued)
WARNING
Fire Risk.
• When using SLP-HRC-SS and SLP-HRC-ZC-
SS termination caps on top vented fireplaces,
a one foot minimum vertical vent section is
required before installing first elbow.
• When using DVP-TB1 termination cap on top vented
fireplaces, a three foot minimum vertical ventsectionisrequired
before installing first elbow.
8-1/8 in.
(206 mm)
13 in.
Effective Length
(330 mm)
5-3/4 to 8-3/8 in.
146 to 213 mm
5-1/2 in.
140 mm
8-3/8 in.
213 mm
3°
87°
15 in.
(381 mm)
10-1/2 in.
267 mm
10-7/8 in.
276 mm
SLP-HRC-SS
SLP-HRC-ZC-SS
HORIZONTAL TERMINATION CAP
DVP-TB1
SL-2DVP
DVP-TB1
SLP90
ASSEMBLY
DVP-TB1
HORIZONTAL TERMINATION CAP
Figure 16.5 SLP Series Vent Components
58
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
B. Vent Components Diagrams (continued)
13-5/8 IN.
346 mm
Optional Wire Harness
EFFECTIVE LENGTH
32 IN. (813 mm) MIN.
35 IN. (889 mm) MAX.
DESCRIPTION
PART NUMBER
PVI-WH10
10 ft. PV Wire Harness
20 ft. PV Wire Harness
40 ft. PV Wire Harness
60 ft. PV Wire Harness
80 ft. PV Wire Harness
100 ft. PV Wire Harness
PVI-WH20
12-1/2 IN.
318 mm
PVI-WH40
PVI-WH60
PVI-WH80
PVI-WH100
20-3/4 IN.
527 mm
Note: Wire harnesses required to power the PVI-SLP
connect to the appliance and are ordered separately from
PVI-SLP. Contact your dealer to order.
PVI-SLP
Power Vent Inline
16 IN.
406 mm
4-1/2 IN.
114 mm
15 IN.
(381 mm)
9-3/16 IN.
(233 mm)
13-5/8 IN.
(346 mm)
16-11/16 IN.
16-11/16 IN.
424 mm
(424 mm)
12-1/2 IN.
(318 mm)
SLP-LPC
SLP Low Profile Cap
Figure 16.6 Vent Components
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
59
GDST3831I
C. Service Parts
31” See Thru Direct Vent Fireplace
Beginning Manufacturing Date: Mar 2008
Ending Manufacturing Date: ______
Log Set Assembly
4
5
3
3
1
2
6
7
8
12
11
10
9
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement
parts for your appliance please provide model number and serial number. All parts listed
in this manual may be ordered from an authorized dealer.
Stocked
at Depot
ITEM
DESCRIPTION
COMMENTS
PART NUMBER
LOGS-2126
SRV2126-700
SRV2126-701
SRV2126-702
2126-118
Log Set Assembly
Log 1
Y
1
2
Log 2
Qty 2 req
Qty 2 req
3
Log 3
4
Sheetrock Ledge
Refractory
Burner NG, LP
Base Pan
2127-017
5
6
2126-007
Y
Y
Y
2126-115
7
GLA-550TR
Refer to valve page
4021-013
8
Glass Door Assembly
Valve Assembly
Junction Box
9
10
11
12
2128-128
Junction Box Bracket
Pilot Shield
2126-124
Additional service part numbers appear on following page.
60
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
GDST3831I
C. Service Parts
Beginning Manufacturing Date: Mar 2008
Ending Manufacturing Date: ______
#9 Valve Assembly
9.2
9.1
9.3
9.4
9.11
9.10
9.5
9.6
9.9
9.8
9.7
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement
parts for your appliance please provide model number and serial number. All parts listed
in this manual may be ordered from an authorized dealer.
Stocked
at Depot
ITEM
9.1
DESCRIPTION
COMMENTS
PART NUMBER
593-594A
593-593A
593-590A
593-592
Battery Pack
Y
Y
Y
Y
9.2
3 Volt Transformer
9.3
Module Wire Assembly
Module
9.4
9.5
Valve Bracket
2118-104
750-500
Valve NG
Y
Y
Y
Y
Y
Y
9.6
Valve LP
593-501
9.7
9.8
Flex Ball Valve Assembly
Flexible Gas Connector
Orifice NG (#44C)
Orifice LP (#55C)
3-hole Grommet
Pilot Assembly NG
Pilot Assembly LP
2 in Jumper Wires
302-320A
530-302A
582-844
9.9
9.10
9.11
582-855
2118-420
2090-012
2090-013
2012-206
Y
Y
Y
Additional service part numbers appear on following page.
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
61
C. Service Parts List
GDST3831I
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement
parts for your appliance please provide model number and serial number. All parts listed
in this manual may be ordered from an authorized dealer.
Stocked
at Depot
ITEM
DESCRIPTION
COMMENTS
PART NUMBER
530-299
Exhaust Restrictor
045-455
Fiberglass Rope Ring
Gasket Assembly
2128-081
Contains Vent, Seal Cap, Burner Neck, Shutter Bracket
and Valve Plate Gaskets
Pkg of 2
33858/2
Glass Latch Assembly
Lava Rock
Y
Y
2005-790
050-721
Mineral Wool
2118-170
Thermostat Wire
Surround Overlay (contains overlay for top, bottom and sides)
Touch Up Paint
SRV2126-FACE
TUP-GBK-12
NGK-MS32
LPK-MS32
593-528
Conversion Kit NG
Conversion Kit LP
Pilot Orifice NG
Pilot Orifice LP
Regulator NG
Y
Y
Y
Y
Y
Y
593-527
NGK-DXV
LPK-DXF
Regulator LP
62
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
D. Contact Information
Heatilator, a brand of Hearth & Home Technologies Inc.
7571 215th Street West, Lakeville, MN 55044
Please contact your Heatilator dealer with any questions or concerns.
For the location of your nearest Heatilator dealer,
- NOTES -
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
NOTICE
DO NOT DISCARD THIS MANUAL
• Important operating
and maintenance
instructions included.
• Read, understand and follow
these instructions for safe
installation and operation.
• Leave this manual with
party responsible for use
and operation.
This product may be covered by one or more of the following patents: (United States) 5328356, 5601073, 5613487,
5647340, 5890485, 5941237, 5947112, 5996575, 6006743, 6019099, 6053165, 6145502, 6170481, 6374822, 6484712,
6601579, 6769426, 6863064, 7077122, 7098269, 7258116, 7470729 or other U.S. and foreign patents pending.
Printed in U.S.A. - Copyright 2012
Heatilator • GDST3831I • 2127-900 Rev. K • 7/12
63
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