Heat Recovery
Ventilators
HRV-150 • HRV-150D
HRV-200 • HRV-200D • HRV-300D
IMPORTANT - PLEASE READ THIS MANUAL BEFORE INSTALLING UNIT
CAUTION - Before installation, careful consideration must be given to how this system will operate if connected to any other piece of mechanical equip-
ment, i.e. a forced air furnace or air handler, operating at a higher static. After installation, the compatibility of the two pieces of equipment must be confirmed
by measuring the airflow’s of the Heat Recovery or Energy Recovery Ventilators by using the balancing procedure found in this manual.
It is always important to assess how the operation of any HRV/ERV may interact with vented combustion equipment (i.e. Gas Furnaces, Oil Furnaces, Wood
Stoves, etc.).
NEVER - install a ventilator in a situation where its normal operation, lack of operation or partial failure may result in the backdrafting or improper function-
ing of vented combustion equipment!!!
Your ventilation system should be installed in conformance with the appropriate provincial or state requirements or in the absence
of such requirements with the current edition of the National Building Code, and / or ASHRAE’s “ Good Engineering Practices”.
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Goodman is a registered trademark of Goodman Company, L.P.
Amana is a registered trademark of Maytag Corporation and used under license to Goodman Company, L..P.
All rights reserved.
1
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HRV Series
HRV 150D & HRV 200D
SPECIFICATIONS
CASE 22 gauge galvanized steel on the HRV-200D & 24
gauge galvanized steel on the HRV 150D. Baked powder
coated paint. Insulated with 1" (25 mm) high density
polystyrene foam to prevent condensation and meet the
requirements of the Underwriters Laboratories 94HF.
MOTORS Two (2) German-manufactured, factory-balanced
ebm™ motors with backward curved blades. Motors come
with permanently lubricated sealed bearings guarantee long
life and maintenance-free operation. Seven (7) year limited
warranty.*
CORE Aluminum heat recovery core configured for an
efficient cross-flow ventilation. Core is 9" x 9" (229 x 229
mm) with a 15" (380 mm) depth HRV 150D or 12" x 12"
(305 x 305 mm) with a 15" (380 mm) depth HRV 200D.
Cores are manufactured to withstand extreme temperature
variations.
Introducing the NEW Heat Recovery Ventilators (HRV). As
with previous designs, incoming fresh outdoor air is filtered
before it is heated by the stale outgoing air through a
aluminum heat recovery core. The HRV then distributes the
preheated fresh filtered air throughout the home by direct
ductwork installed specifically for the HRV or through the
ductwork of a forced-air system.
FILTERS Two (2) Washable Electrostatic Panel Type Air Filters,
HRV 150D is 8.5" (216mm) x 15" (380mm) x 0.125"
(3mm), HRV 200D is 11.75" (298mm) x 15" (380mm) x
0.125" (3mm).
FEATURES:
CONTROLS External three (3) position (Low/Stand
By/Medium) rocker switch that will offer continuous
ventilation. We offer a variety of external controls.
(see optional controls)
• Compact Design
• Electrostatic Filters (washable)
• Airflow Balancing Using Our Easy "TRUE" Motor
Adjustment
DEFROST A preset 5 minute defrost sequence is activated at
an outdoor air temperature of 23˚F (-5˚C) and lower.
• External Screw Type Dry Contacts For Push Button
Timers, Dehumidistat, Crank Timer & Digital Control.
• Easy Core Guide Channels For Removing Core
• Better Packaging For More Protection In Shipping
During the defrost sequence, its mechanism uses a
motorized damper to temporarily block the incoming fresh
air stream allowing the warm air from the home to circulate
through the HRV. The exhaust blower shuts down & the
supply blower switches into high speed to maximize the
effectiveness of the defrost strategy.
OPTIONAL CONTROLS
• DMFC-REC – Digital Multi-Function Control
• MD-4W
– Mechanical Low Voltage Dehumidistat
with On/Off Switch
The unit then returns to normal operation for 25 minutes,
and continues cycle.
• MD-2W
• RT-15M
• CT-30M
• AQS
– Mechanical Low Voltage Dehumidistat
– 15 Minute Push Button Timer
– 30 Minute Crank Timer
SERVICEABILITY Core, filters, motors and drain pan can be
easily serviced through latched access door. Core
conveniently slides out with ease on an improved railing
system. Electrical box, placed on the outside of the unit,
can also be easily accessed.
– Air Quality Sensor
External screw type dry contacts (provided)
* For details concerning warranties, please visit your local dealer.
3
The product is manufactured by Fantech, Inc. Fantech reserves the right to modify, at any time and without notice, any or all of this product's features, designs, components and specifications.
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HRV-150D & HRV-200D
Dimensions
5TH port for recirculation defrost type models only
E
6"
A
B
C
D
Model
A
B
C
D
E
HRV-150D
HRV-200D
2 ¹⁄₄" (56mm)
2 ¹⁄₄" (56mm)
23 ¹⁄₂" (596mm)
27 ⁷⁄₈" (707mm)
2 ⁵⁄₈" (67mm)
2 ⁵⁄₈" (67mm)
17 ³⁄₈" (441mm)
17 ³⁄₈" (441mm)
17 ³⁄₈" (441mm)
20 ¹⁄₂" (520mm)
Fan Performance
Performance Data
Airflow (L/s)
57
0
19
38
76
94
114
300
1.2
1
Apparent Sensible Apparent Sensible
Effectiveness at Effectiveness at -
250
200
150
100
50
Model
32ºF (0ºC)
13ºF (-25ºC)
HRV-200D
0.8
0.6
0.4
0.2
0
HRV-150D
HRV-200D
72 %
71 %
69 %
76 %
AIRFLOW CAP. cfm (L/s) @ 0.4 on High Speed
Power
• Volts
120 VAC
HRV-150D
• Amperage
HRV-150D
HRV-200D
• Phase
1.5 Amps Total
1.9 Amps Total
Single Phase
0
240
0
40
80
120
160
200
Airflow (cfm)
TH
5 port for recirculation defrost models
only can be ducted or left open
Airflow
Fresh Air
From Outside
Stale Air
From Inside
Fresh Air
To Inside
Stale Air
To Outside
4
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HRV Series
HRV 150 & HRV 200
SPECIFICATIONS
CASE 22 gauge galvanized steel on the HRV-200 & 24 gauge
galvanized steel on the HRV-150. Baked powder coated
paint. Insulated with 1" (25 mm) high density polystyrene
foam to prevent condensation and meet the requirements of
the Underwriters Laboratories 94HF.
MOTORS Two (2) German-manufactured, factory-balanced
ebm™ motors with backward curved blades. Motors come
with permanently lubricated sealed bearings guarantee long
life and maintenance-free operation. Seven (7) year limited
limited warranty.*
CORE Aluminum heat recovery core configured for an
efficient cross-flow ventilation. Core is 9" x 9" (229 x 229
mm) with a 15" (380 mm) depth HRV-150 or 12" x 12"
(305 x 305 mm) with a 15" (380 mm) depth HRV-200.
Cores are manufactured to withstand extreme temperature
variations.
Introducing the NEW Heat Recovery Ventilators (HRV). As
with previous designs, incoming fresh outdoor air is filtered
before it is heated by the stale outgoing air through a
aluminum heat recovery core. The HRV then distributes the
preheated fresh filtered air throughout the home by direct
ductwork installed specifically for the HRV or through the
ductwork of a forced-air system.
FILTERS Two (2) Washable Electrostatic Panel Type Air Filters,
HRV-150 is 8.5" (216mm) x 15" (380mm) x 0.125" (3mm),
HRV-200 is 11.75" (298mm) x 15" (380mm) x 0.125"
(3mm).
FEATURES:
CONTROLS External three (3) position (Low/Stand
By/Medium) rocker switch that will offer continuous
ventilation. We offer a variety of external controls. (see
optional controls)
• Compact Design
• Electrostatic Filters (washable)
• Balancing Dampers Included In Installation Kit
(not factory installed)
DEFROST A preset 5 minute defrost sequence is activated at
an outdoor air temperature of 23˚F (-5˚C) and lower.
• External Screw Type Dry Contacts For Push Button
Timers, Dehumidistats, Crank Timer & Digital Control.
• Easy Core Guide Channels For Removing Core
• Better Packaging For More Protection In Shipping
During the defrost sequence, the supply blower shuts down
& the exhaust blower switches into high speed to maximize
the effectiveness of the defrost strategy.
OPTIONAL CONTROLS
The unit then returns to normal operation for 25 minutes,
and continues cycle.
• DMFC
• MD-4W
– Digital Multi-Function Control
– Mechanical Low Voltage Dehumidistat
with On/Off Switch
– Mechanical Low Voltage Dehumidistat
– 15 Minute Push Button Timer
– 30 Minute Crank Timer
SERVICEABILITY Core, filters, motors and drain pan can be
easily serviced through latched access door. Core
conveniently slides out with ease on an improved railing
system. Electrical box, placed on the outside of the unit, can
also be easily accessed.
• MD-2W
• RT-15M
• CT-30M
• AQS
– Air Quality Sensor
External screw type dry contacts (provided)
* For details concerning warranties, please visit your local dealer.
5
The product is manufactured by Fantech, Inc. Fantech reserves the right to modify, at any time and without notice, any or all of this product's features, designs, components and specifications.
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HRV-150 & HRV-200
Dimensions
E
6"
B
D
A
C
Model
A
B
C
D
E
HRV-150
HRV-200
2 ¹⁄₄" (56mm)
2 ¹⁄₄" (56mm)
23 ¹⁄₂" (596mm)
27 ⁷⁄₈" (707mm)
2 ⁵⁄₈" (67mm)
2 ⁵⁄₈" (67mm)
17 ³⁄₈" (441mm)
17 ³⁄₈" (441mm)
16 ¹⁄₈" (413mm)
20 ¹⁄₂" (520mm)
Fan Performance
Performance Data
Airflow (L/s)
57
0
19
38
76
94
114
300
1.2
Apparent Sensible Apparent Sensible
Effectiveness at Effectiveness at -
Model
1
250
200
150
100
50
32ºF (0ºC)
13ºF (-25ºC)
SHR 2004
HRV-200
0.8
0.6
0.4
0.2
0
HRV-150
HRV-200
72 %
71 %
69 %
76 %
AIRFLOW CAP. cfm (L/s) @ 0.4 on High Speed
Power
• Volts
120 VAC
• Amperage
HRV-150
HRV-200
• Phase
1.5 Amps Total
1.9 Amps Total
Single Phase
HRV-150
0
240
0
40
80
120
Airflow (cfm)
160
200
Airflow
Fresh Air
From Outside
Stale Air
From Inside
Fresh Air
To Inside
Stale Air
To Outside
6
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HRV Series
HRV-300D
SPECIFICATIONS
CASE 22 gauge galvanized steel. Baked powder coated paint.
Insulated with 1" (25 mm) high density polystyrene foam to
prevent condensation and meet the requirements of the
Underwriters Laboratories 94HF.
MOTORS Two (2) German-manufactured, factory-balanced
ebm™ motors with backward curved blades. Motors come
with permanently lubricated sealed bearings guarantee long
life and maintenance-free operation. Seven (7) year limited
warranty.*
CORES Two (2) aluminum heat recovery cores configured for
an efficient cross-flow ventilation. Core is 12" x 12" (305 x
305 mm) with a 15" (380 mm) depth. Cores are
manufactured to withstand extreme temperature variations.
Introducing the NEW Heat Recovery Ventilators (HRV). As
with previous designs, incoming fresh outdoor air is filtered
before it is heated by the stale outgoing air. The HRV then
distributes the preheated fresh filtered air throughout the
home by direct ductwork installed specifically for the HRV or
through the ductwork of a forced-air system.
FILTERS Two (2) synthetic high quality filters for better indoor
air quality and clean air.
CONTROLS External three (3) position (Low/Stand
By/Medium) rocker switch that will offer continuous
ventilation. We offer a variety of external controls.
(see optional controls)
FEATURES:
DEFROST A preset 5 minute defrost sequence is activated at
an outdoor air temperature of 23˚F (-5˚C) and lower.
• Balancing Dampers Included In Installation Kit
(not factory installed
)
• External Screw Type Dry Contacts For Push Button
Timers, Dehumidistats, Crank Timer & Digital Control.
During the HRV-300 defrost sequence, its mechanism uses
a motorized damper to temporarily block the incoming fresh
air stream allowing the warm air from the home to circulate
through the HRV. The exhaust blower shuts down & the
supply blower switches into high speed to maximize the
effectiveness of the defrost strategy.
OPTIONAL CONTROLS
• DMFC-REC – Digital Multi-Function Control
• MD-4W
– Mechanical Low Voltage Dehumidistat
with On/Off Switch
The unit then returns to normal operation for 25 minutes,
and continues cycle.
• MD-2W
• RT-15M
• CT-30M
• AQS
– Mechanical Low Voltage Dehumidistat
– 15 Minute Push Button Timer
– 30 Minute Crank Timer
SERVICEABILITY Core, filters, motors and drain pan can be
easily serviced through latched access door.
– Air Quality Sensor
External screw type dry contacts (provided)
* For details concerning warranties, please visit your local dealer.
7
The product is manufactured by Fantech, Inc. Fantech reserves the right to modify, at any time and without notice, any or all of this product's features, designs, components and specifications.
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HRV-300D
Dimensions
5TH port for recirculation defrost
type models only
22.20"
564mm
6"
2.20"
56mm
50.87"
1292mm
2.20"
56mm
17.36"
441mm
Fan Performance
Performance Data
Airflow (L/s)
0.00
1.2
19.00
38.00
57.00
76.00
94.00
114.00
123.00
142.00
162.00
300.00
Apparent Sensible Apparent Sensible
Effectiveness at Effectiveness at -
1
0.8
0.6
0.4
0.2
0
250.00
200.00
150.00
100.00
50.00
Model
32ºF (0ºC)
13ºF (-25ºC)
HRV-300D
HRV-300D
92 %
91 %
AIRFLOW CAP. cfm (L/s) @ 0.4 on High Speed
Power
0.00
360.00
• Volts
120 VAC
0.00
40.00
80.00
120.00
160.00
200.00
240.00
280.00
320.00
Airflow (cfm)
• Amperage
• Phase
2.7 Amps Total
Single Phase
TH
5 port for recirculation defrost models
only, can be ducted or left open
Airflow
8
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OPERATION
A Heat Recovery Ventilator (HRV) is designed to bring fresh air into a building while exhausting an equal amount of stale air. During the winter
months, the incoming cold fresh air is warmed by utilizing the heat recovered from the stale air before it is exhausted to the outdoors. During
summer months when the indoor space is air conditioned, the HRV will help in cooling the incoming fresh air with the stale air that is being
exhausted.
Our HRV’s are designed to run continuous or on intermittent, giving the homeowner complete control over their air quality. Continuous low speed
ventilation is recommended, which will help eliminate carbon dioxide, voc’s and other gases as well as freshen up the home. Intermittent high
speed ventilation can be obtained through a variety of optional remote controls found in this manual (page 13 ). Below are some examples of sea-
sonal operation of an HRV.
Winter:
Spring:
Humidity control is very important during the winter
months. This is when problems will be most apparent
since condensation on the windows will often occur. The
colder the outside temperature, the greater the risk of
condensation in the home. The average relative humidity
should be maintained between (30-60) to avoid conden-
sation. Low speed continuous ventilation with high speed override is rec-
ommended.
Temperatures are more moderate and become
warmer each day. To keep the humidity and tem-
perature uniform, set the dehumidistat higher (if
installed). You may also switch the HRV to standby
mode if desired.
Summer:
Fall:
The air is sometimes hot and humid. To stop the warm
humid air from entering, set the dehumidistat at its
highest level. If the digital control is installed, the air
exchanger can be set to cycle the unit on and off as
desired from that wall control. However, continuous ven-
tilation is recommended.
Rain and rapid temperature changes make it diffi-
cult to control the internal humidity level and may
result in condensation on the windows. A remote
dehumidistat may help give greater control over the
inside environment.
MODES OF OPERATION
The entire line of Heat Recovery comes equipped with our new electronic uni-control board which offers a wide variety of features making it the ulti-
mate ventilation control system. Our engineers have used the latest technology to provide solid, trouble free operation under any conditions.
The uni-control board offers stand alone operating capabilities as well as an exclusive 2 wire communication to most external controls. The trouble-
free optional controls include: two different rotary dial dehumidistats, an air quality sensor (3 wire communication required), a 15 minute remote
push-button timer, as well as the most sophisticated line of remote wall mounted controls, the digital control.
An on-board diagnostic LED helps find problems quickly and efficiently. For example the LED can be used to signal a broken or shorted electronic
wall control wire. Electronic air temperature probe gives this board accurate readings in order to minimize unnecessary defrost operation, and the
on-board jumpers provide the user with the option of adjusting defrost time and sequence to optimize performance under abnormal conditions. The
defrost operation is automatic and is usually never adjusted.
* no exchange of air
2. Intermittent / Standby Mode
The system is always on standby and operates
at high speed when activated by an optional
remote control. "Standby" should be selected
if the user wishes to stop the unit from
Air from
1. Continuous / Ventilation Mode
Air from
House
Outside
In this mode of operation both fans
are operating and exchanging air with
the outside. The heat recovery venti-
lator (HRV) constantly exchanges the
Air to
House
Air to
Outside
continuous exchange. We recommend that
air at the rate you select, either at low or medium speed, and switches
to high speed when activated by an optional remote control. The "Low"
and "Med" fan speed selection will cause the unit to operate in continuous
exchange mode at an exchange rate of 35% and 50% maximum airflow
rating respectively. Continuous mode is recommended, since pollutants
are slowly but constantly being generated in your house.
the "Standby" mode only be used if your system is equipped with an
optional external control, in which case, the unit would activate to
"High" fan speed, until the control is satisfied and then return to
standby (off).
4. Defrost (Fan shutdown 4 port
Air from
House
3.Defrost/Recirculation Mode
Air from
House
models)
(5 port “R” Models)
The automatic defrost cycle con-
sists of a fan shutdown. When the
supply air stream temperature
The automatic defrost cycle consists
of a damper defrost which allows air
to recirculate throughout the unit &
Air to
outside
Air to
House
goes below -5°C (23°F), the sup-
ply motor shuts down and the exhaust motor goes into high speed.
Ambient air is passed through the unit for a period of 5 minutes. The
supply motor will then re-start and run at the preset speed. The
exhaust motor will also slow down to the preset speed, and the unit
will operate in the run cycle for 25 minutes. This fan shutdown
defrost cycle continues until the supply air stream rises above 0°C
(32°F).
home. When the supply air stream
temperature goes below -5°C (23°F), the exhaust motor shuts down, the
supply motor goes to high speed, and a damper closes the supply, open-
ing a 5th collar. The ambient air is then recirculated through the unit &
home for a period of 5 minutes. The unit will then resume normal opera-
tion for a time period of 25 minutes. This damper defrost cycle continues
until the supply air stream rises above 0°C (32°F). The recirculation fea-
ture can be obtained with the use of an optional digital control.
9
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OPERATION (CONT'D)
* All controls are low voltage. 18 to 24
gauge wire is recommended.
OPTIONAL REMOTE CONTROLS
PRACTICAL
TIPS
Dehumidistat - MD-2W - The wall mount dehumidistat monitors the humidity
level in the area it is installed. When the humidity level rises above the
desired set-point, the HRV will activate to high speed/override mode. Once
the humidity level returns to desired condition, the unit will return to the
normal mode.
To avoid window condensation:
• It is not necessary to
change the humidity control
every day. Monitor the
average weekly
2 wire installation
Dehumidistat - MD-4W - The wall mount dehumidistat offers the same
features of the dehumidistat I plus additional off/on control for the HRV.
Dial illuminates when in override mode.
temperature or experiment
with various settings until
you find a level that is
comfortable for you. Adjust
the control when needed.
NOTE:
4 wire installation
A dehumidistat is ideal for
use in energy efficient
houses where indoor
humidity (during the
heating season) is higher
than outdoor levels. High
humidity is a major cause
of structure damage and
IAQ problems such as mold
and mildew.
Air Quality Sensor - AQS - The wall mount Air Quality Sensor (AQS) monitors
indoor air quality and activates the override mode when carbon monoxide,
formaldehyde, benzene, volatile organic compounds and other pollutants are
detected. The unit will then return to normal mode once the air pollutants
are reduced to a pre-determined lower level.
* This control is not a warning device.
3 wire installation
2 wire installation
15-min Timer - RT-15M - The 15-minute remote timer is typically installed in
areas where contaminated such as moisture and odors, are produced. Simply
push the button and the HRV will activate to high speed for 15 minutes. Up
to 5 electronic timers can be installed throughout the building at a distance
of up to 500 feet (152 meters) from the HRV.
PRACTICAL
TIPS
OPTIONAL DIGITAL CONTROL
DEHUMIDISTAT CONTROL
(see description on top of this page)
DIGITAL DISPLAY
DMFC-REC
DIGITAL MULTI-FUNCTION
WALL CONTROL WITH
RECIRCULATION
Control multiple functions of
your HRV with one slimline
wall control. Two wire connec-
tion simplifies installation.
Use one control per HRV
installed.
NOTE:
Shows Indoor Humidity Level
This control will not read
below 29% RH
When an digital control is
installed, the rocker switch
located on the right hand
side of the HRV will be
automatically deactivated
giving the user complete
control from wherever
he/she wishes to mount the
control pad.
4 1/2"
(114 mm)
OVERRIDE TIMER
When pressed, unit
will provide high
speed
ventilation
for one 15,
30 or 60 minute
period.
NOTE:
The override speed cannot
be set at a fan speed lower
or equal to the normal
operating fan speed. For
example, if the unit is
normally operating at a
medium fan speed, the
override fan speed will be
automatically set to high.
5 1/8"
(130 mm)
MAINTENANCE LIGHT
Light comes on when
it’s time to clean
unit.
Width = 4 1/2" (114mm)
Height = 5 1/8" (130mm)
Thickness = 5/8" (16mm)
NOTE:
DMFC-REC model, changing
the override speed will
change default override
speed for other external
controls.
* Both digital controls
are the same size
POWER
On/Off and Reset
EXAMPLES:
If on the DMFC-REC control,
you have set the override
control at medium, and you
start an external remote
control, the unit will run at
medium speed for 15 min.
MODES
MODE SPEED
CYCLE CONTROL
OVERRIDE SPEED
CONTROL
Push to select
override speed of
unit.
Select Intermittent,
Recirculation or
Continuous
Set Unit to Low,
Medium or High
Speed
Set unit to cycle on
15, 20, or 30 min-
utes every hour
Ventilation Modes
10
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OPERATION (CONT'D)
OPTIONAL DIGITAL CONTROL
DIGITAL DISPLAY
DEHUMIDISTAT CONTROL
Shows Indoor Humidity Level
This control will not read below
29% RH
A Dehumidistat is ideal for use in energy efficient houses where
indoor humidity (during the heating season) is higher than outdoor
levels. High humidity is a major cause of structure damage and IAQ
problems such as mold and mildew.
DMFC
DIGITAL MULTI-FUNCTION
WALL CONTROL
Control multiple functions of
your HRV with one slimline
wall control. Two wire connec-
tion simplifies installation.
Use one control per HRV
installed.
OVERRIDE TIMER
When pressed, unit will
provide high speed
ventilation for 15 minute
period. Once the time
elapsed the unit will return
to its normal function. To
move from one time to the
other, continue pressing the
timer button until you reach
the desired time.
POWER
On/Off and Reset
MAINTENANCE LIGHT
This function is to turn your
unit on or off, in the off posi-
tion the damper is open and
you will feel the cold outside
air come in. To go from the
on to off position just press
once.
Light comes on when it’s time
to clean unit. This function will
let you know when it's time to
check your filters and core. To
reset your filter light, after
you've cleaned or replaced the
filters, just push the power but-
ton and restart the unit. This
will turn the light off and reset
the clock for your filter check.
FILTER LIGHT RESET & MODE FAN
MODES
The LCD (Liquid Crystal Display) indicates the percentage of Relative Select Intermittent, or
DEHUMIDISTAT CONTROL
SPEED SELECTOR
Press to reset the filter mainte-
nance reminder light. The combi-
nation filter light reset and up
setpoint selector buttons let’s
you choose at which speed the
HRV, ERV unit will operate in
continuous or recirculation mode
only. Pressing the filter light
reset button once displays the
mode fan speed on the LCD. The
LCD should display one of the
following three letters, L for
Low, M for Medium and H for
High. To change the mode
speed, press the up setpoint
until desired speed is displayed,
selector. After 1 second of inac-
tivity, the LCD will return to rel-
ative humidity reading.
Humidity in the air surrounding the control and ultimately in the Continuous Ventilation Modes.
house. Pressing either of the setpoint selectors (
,
) once, will Continuous
display the desired RH level. The setpoint selection mode is now acti-
vated and can be adjusted with either selectors to a newly desired
setpoint. The LCD will return to the actual RH level display after a few air.
This function will exchange
outside air with your stale
seconds.
Intermittent
This function will put your
unit on stand by and can
be over ride by timer, air quality
sensor, etc
To move from function to the
other, continue pressing the
mode button until you reach the
desired function. This function
goes from Recirculation,
Continuous to Intermittent.
Note: All controls are low voltage. 18 to 24 gauge wire is recommended.
11
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INSTALLATION
PRACTICAL TIPS
LOCATION
The HRV must be located in a heated space where it will be possible to conveniently service the
unit. Typically the HRV would be located in the mechanical room or an area close to the outside
wall where the weatherhoods will be mounted. If a basement area is not convenient or does not
exist, a utility or laundry room may be used.
Attic installations are not normally recommended due to:
- the complexity of work to install
• Install the unit close to
the outside wall on
which the supply and
exhaust hoods will be
mounted.
- freezing conditions in the attic
- difficulty of access for service and cleaning
Connecting appliances to the HRV It is not recommended, including:
- clothes dryer
• Have a nearby power
supply 120 Volts, 60Hz.
- range top
- stovetop fan
- central vacuum system
• Have the possibility of
mounting the unit to
supporting beams.
These appliance may cause lint, dust or grease to collect in the HRV , damaging the unit.
NOTE: Connecting any of these type of appliances to the HRV will invalidate your warranty
• Mount the unit as
level as possible in
order to allow proper
condensate drainage.
MOUNTING
• Have access to
a water drain for the
condensate of the unit
during defrost.
• Have a certain amount
of heat around the unit
(attic installation is not
recommended).
1 Place Fastening hooks
on the strapping board
or the floor joists.
2 Attach a hanging chain
(provided) to each 10 3/4”
(19 mm) bolt (provided) in
the top 4 corners of the
unit and tighten.
3 Hang the unit by
slipping a link onto the
hanging hooks, making
sure the unit is level.
• Minimize any noise
level that would be
created by the unit in
the living area.
Installing Drain Line
• Have access for future
maintenance.
Through normal operation and during its defrost mode, the HRV may produce some condensation.
This water should flow into a nearby drain, or be taken away by a condensate pump. The HRV and
all condensate lines must be installed in a space where the temperature is maintained above the
freezing point. A “P” trap should be made in the drain line. This will prevent odors from being
drawn back up into the unit.
1 Install the drain nipple.
2 Install the drain hose,
making a “P” trap
12
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INSTALLING DUCTS GOING TO / FROM OUTSIDE
A well designed and installed ducting system will allow the HRV to operate at its maximum efficiency.
Always try to keep duct runs as short and straight as possible.
See Installation Diagrams for installation examples.
INSTALLING THE DUCTING
TO THE WEATHERHOODS
PRACTICAL
TIPS
The inner liner of the flexible insulated duct
must be clamped to the sleeve of the weath-
erhoods (as close to the outside as possible)
and to the appropriate port on the HRV. The
insulation should remain full and not be
squished. The outer liner, which acts as a
vapor barrier must be completely sealed to
outer wall and the HRV using tape and or
caulking. A good bead of high quality caulk-
ing (preferably acoustical sealant) will seal
•Decide where your intake and
exhaust hoods will be located.
Locating the Intake
Weatherhood
• Should be located upstream
(if there are prevailing winds)
from the exhaust outlet
• At least 4' - 6’ (2m) from the
exhaust weatherhood
• At least 6’ (2m) away from
dryer vents and furnace
exhaust ( medium or high effi-
ciency furnaces)
• A minimum of at least 6’ (2m)
from driveways, oil fill pipes,
gas meters, or garbage con-
tainers
• At least 18” (457mm) above
the ground, or above the
depth of expected snow accu-
mulation
• At least 3’ (1m) from the cor-
ner of the building
the inner flexible duct to both the HRV port
Model
Description
and the weatherhood prior to clamping.
SEH-6P
Supply & Exhaust Plastic Hood Kit
Supply & Exhaust Metal Hood Kit
To minimize air flow restriction, the flexible
SEH-6M
insulated duct that connects the two outside
weatherhoods to the HRV should be
stretched tightly and be as short as possible.
Twisting of folding the duct will severely
restrict air flow.
* Application for Supply or Exhaust
• Do not locate in a garage,
attic or crawl space
Locating the Exhaust
Weatherhood
• At least 4' - 6’ (1m - 2m)
from the ventilation air intake
• At least 18” (457mm) above
ground or above the depth of
expected snow accumulation
• At least 3’ (1m) away from
the corner of the building
• Not near a gas meter, electric
meter or a walkway where fog
or ice could create a hazard
• Not into a garage, workshop
or other unheated space
2 Pull the insulated
flexible duct through
the opening until it is
well extended and
straight. Slide the
duct’s inner vinyl
sleeve over the hood
collar and secure, pull
the insulation over
the duct and then the
vapor barrier over the
sleeve and secure
with duct tape.
3 Push the hood into
the opening. Attach
the hood to the
outside wall with
mounting screws.
Repeat the
installation procedure
for both the Supply
and Exhaust hood.
4 Using a caulking
gun, seal around
both hoods to
prevent any
1 Using the collar of
the outside hood,
outline the intake &
exhaust holes to be
cut. The holes should
be slightly larger
than the collar to
allow for the
leaks.
thickness of the
insulated flexible
duct. Cut a hole
for both the intake
and exhaust hoods.
When installing the weather-
hood, it’s outside perimeter
must be sealed with exterior
caulking.
13
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INSTALLING DUCTS TO / FROM INSIDE
To maximize airflow in the ductwork system, all ducts should be kept short and have as few bends or elbows as possible. Forty-five
degree are preferred to 90º elbows. Use “Y” tees instead of 90º elbows whenever possible.
All duct joints must be fastened with screws or duct sealant and wrapped with a quality duct tape to prevent leakage. Aluminum foil
duct tape is recommended. Galvanized ducting from the HRV to the living areas in the house is recommended whenever possible,
although flexible duct can be used in moderation when necessary.
SUPPLY AIR DUCTING
In homes without a forced air furnace, fresh air should be supplied to all habitable rooms including, bedrooms and living areas. It
should be supplied from high wall or ceiling locations. Grilles that diffuse the air comfortably are recommended.To avoid possible noise
transfer through the ductwork system, a short length (approximately 12”, 300 mm) of nonmetallic flexible insulated duct should be
connected between the HRV and the supply/exhaust ductwork system.
The main supply and return lines to/from the HRV must be 6 inches (150 mm) minimum. Branch lines to the individual rooms may be
as small as 4 inches (100 mm), but 5 inch (125 mm) lines are preferred.If the floor is the only option available, then special care
should be taken in locating grilles. Areas such as under baseboard heaters will help to temper the air. Also optional inline duct
heaters are available for mounting in the supply duct work to add heat if required.In homes with a forced air furnace, you may want to
connect the HRV to the furnace ductwork (see information below).
PRACTICAL TIPS
Direct Connection
For minimum distance
See local building codes
and practical tips.
• A direct connection requires that the fan of the furnace
runs continuously. It may be inter-linked electrically
(low voltage) with the HRV (Accessory Control
Contacts) for intermittent demand. Should you wish to
hard duct the supply air directly into the cold air return
of the furnace, remember to check the airflow balance
of the HRV with the furnace fan both “on” and “off” to
determine that it does not imbalance the HRV more
than 10%. Make sure you respect the 1m minimum
distance from the supply air in of the HRV and the
furnace (Refer to your local and National Building &
Heating Codes for any variations in these notes).
• Building Codes and
Combustion Appliance
Installation Codes do
not allow location of
return air grilles or any
opening such as a
“breathing tee” in an
enclosed room with
spillage susceptible
combustion appliances.
• The fresh air inlet from
the HRV needs to
from HRV
respect a minimum
distance from the furnace
return drop to ensure
proper air mixing and
temperature at the
furnace core.
See furnace manufacturer
for appropriate
specifications.
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INSTALLING DUCTS TO / FROM INSIDE (CONT'D)
Exhaust Air Ducting
The stale air exhaust system is used to draw air from the points in the house where the worst air quality problems occur. It is rec-
ommended that return air ducts be installed in the bathroom, kitchen, and laundry room. Additional return air ducts from strategic
locations (i.e. greenhouse, atrium, swimming pool, sauna, etc.) may be installed. The furnace return duct may be also used to
exhaust from. In this method, the exhaust air is not ducted back from bathrooms, kitchens, etc to the HRV with “dedicated lines”.
This method has become popular and provides good ventilation when installed in accordance with the instructions. The furnace
blower must be running when the HRV is operating for this method to be effective.
Dedicated Installation for Existing Home -
(non forced air heating / cooling system)
PRACTICAL TIPS
1 Begin with the duct collar marked “Exhaust Air In”. Slide a short piece
(12”) of flexible duct over the duct collar. Using duct tape, tape the
• For new construction,
the rigid ducts are run
flexible duct to the collar. Run the flexible ducting to the main rigid duct
in the walls.
trunk line, which connects to the remainder of the ducts going to and
from rooms in the house. Repeat the steps for the “Supply Air Out” on
the side of the HRV.
• Choose the location for
your Supply and Exhaust
grilles. The Supply
grilles should be located
in every habitable room
and the Exhaust Grilles
should be located in the
wet rooms.
2 Working from a closet, attic or inside your joist wall, run the length of
ducting required for the proper grille location and cut a hole in the
drywall. Fasten the mounting collar (optional) to the ducting and fasten
the collar to the wall or ceiling with screws.
• A piece of flexible
ducting should be
placed between the
Supply Air In and Out
collar of the HRV and
the rigid ducting to
absorb any noise or
vibrations.
3 The grille airflow can be adjusted by rotating the inside unit. It is
recommended that the grilles be completely opened at first and then
adjusted later as needed.
• For proper network
of ducting, see TYPES OF
INSTALLATIONS.
• The grilles are to be
installed on the ceiling
or on the wall 6” (152
mm) to 12” (305 mm)
from the ceiling.
4 Push the grille into the optional mounting collar or directly into installed elbow.
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INSTALLATION EXAMPLES
It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform
as intended. All air movement devices have a performance curve. The amount of air (CFM) that an HRV/ERV will deliver is
directly related to the total external static pressure (E.S.P.) of the system. Static pressure is a measure of resistance imposed
on the blower by length of duct work/number of fittings used in duct work, duct heater etc.
Ducting Fifth Port Units
All HRV(D)’s have a fifth duct port on top of the unit. This duct port is for both defrost and the recirculation mode. A motorized
damper installed in the port closes during defrost or recirculation temporarily blocking the incoming fresh air-stream, allowing the
warm air from the house to circulate through the HRV. You may wish to duct this port to a common clean air room (living room or
dining room) so when recirculation is activated, household odors from the kitchen, bathroom or basement won’t be introduced into
the living spaces of the home environment.
RADIANT HEATED HOMES
NOTE:
The recirculation function can be accessed with a optional digital control. It allows air to move gently throughout the home without
exchanging air to the outside, until needed.
Example diagram only-duct configuration may change depending on model
Exhaust
Fully Dedicated System
Bathroom
(new construction)
Bedrooms
Central Control - optional
Fresh air to living room
Stale air drawn from key areas
of home (bathroom, kitchen,
laundry)
Fresh air supplied to main liv-
ing areas
HRV must be balanced
1800
mm
HRV
Fresh Air
460 mm
Exhaust Air
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INSTALLATION EXAMPLES (CONT'D)
Example diagram only-duct configuration may change depending on model
DIRECT CONNECTION of the SUPPLY AIR STREAM to the FURNACE COLD AIR RETURN
(Stale air drawn from key areas of home)
Partially Dedicated System
Exhaust
Central Control - optional
Bathroom
Stale air drawn from key areas of
home (bathroom, kitchen, laundry)
Bedrooms
Return Air
Furnace thermostat
Fresh air supplied to main living
areas via the forced air system.
HRV must be balanced
HRV
Connection
HRV
Fresh Air
460 mm
Exhaust Air
* Ducts connection may
vary depending on model
Return Air
Exhaust Air from various parts of home.
i.e. bathrooms (if required),
kitchens (if required)
1 m
(3’-3”) min.
recommended
Outdoors
Cool Air
Return
* Unit is normally balanced on HIGH speed with furnace blower ON.
NOTES:
1.Furnace blower may be required to operate when HRV/ERV is on to provide good air distribution.
2.Weatherhood arrangement is for drawing purposes only. 6’ (2m) minimum separation recommended.
18” (460mm) above grade minimum.
3.Due to the differences in pressure between the HRV/ERV and the equipment it is being connected to, the HRV/ERV’s airflow must be
confirmed on site, using the balancing procedure found in the installation manual.
17
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INSTALLATION EXAMPLES (CONT'D)
Example diagram only-duct configuration may change depending on model
DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and
EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN
Simplified Installation
Option 1
(Return/Return Method)
• HRV must be balanced
• It is mandatory that the furnace blower
run continuously or HRV operation
be interlocked with the furnace blower
• Check local codes/authority having
jurisdiction for acceptance
Note: Option 1 is the pre-
ferred/recommended method
when doing a simplified
installation
* Ducts connection may
Return Air
vary depending on model
40”
Min.
1 m
(3’-3”) min.
recommended
Outdoors
* Unit is
normally
balanced
on HIGH
speed
Cool Air
Return
NOTES:
with
1. Furnace blower may be required to operate when ventilation from HRV/ERV is required. The furnace should be
set to run continuously or interlocked with HRV/ERV.
2. A minimum separation of 39 inches (1m) is recommended between the two direct connections.
3. The exhaust air connection should be upstream of the supply air connection to prevent exhausting any fresh air.
4. Weatherhood arrangement is for drawing purposes only. 6’ (2m) minimum separation recommended. 18” (460
mm) above grade minimum.
furnace
blower
ON.
5. Due to the differences in pressure between the HRV/ERV and the equipment it is being connected to, the
HR/ERV’s airflow must be confirmed on site, using the balancing procedure found in the installation manual.
18
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INSTALLATION EXAMPLES (CONT'D)
Example diagram only-duct configuration may change depending on model
DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM &
EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN & SUPPLY AIR SIDE
Simplified Installation
Option 2
(Supply/Return Method)
• HRV must be balanced
• It is recommended that the furnace blower
run continuously or HRV operation
be interlocked with the furnace blower
• Check local codes /authority having
jurisdiction for acceptance
Note: Option 1 is the pre-
ferred/recommended method
when doing a simplified
installation
* Ducts connection may
Return Air
vary depending on model
1m
(3’-3”) min.
recommended
1 m
(3’-3”) min.
recom-
Outdoors
mended
* Unit is
normally
balanced
on HIGH
speed
Cool Air
Return
NOTES:
with
1. Furnace blower may be required to operate when ventilation from HRV/ERV is required. The furnace should be
set to run continuously or interlocked with HRV/ERV.
2. The exhaust air connection should be upstream of the supply air connection to prevent exhausting any fresh air.
3. Weatherhood arrangement is for drawing purposes only. Six feet (2m) minimum separation recommended.
Eighteen inches (460 mm) above grade minimum.
furnace
blower
ON.
4. Due to the differences in pressure between the HRV/ERV and the equipment it is being connected to, the
HR/ERV’s airflow must be confirmed on site, using the balancing procedure found in the installation manual.
19
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AIR FLOW BALANCING
CAUTION
• If the unit’s airflows are not properly balanced...
- The unit may not operate at it’s maximum efficiency.
- Heat recovery core damage may occur.
- The unit’s use could cause negative or positive pressure in your home causing cold air to enter or other combustible equipment to backdraft.
- The unit may not defrost properly.
PITOT TUBE BALANCING PROCEDURE
PITOT TUBE
ing. The value read on the gauge is called the velocity pressure. The
Pitot tube comes with a chart that will give the air flow velocity based
on the velocity pressure indicated by the gauge. This velocity will be in
BALANCING PROCEDURE
The following is a method of field balancing an HRV/ERV using a Pitot either feet per minute or meters per second. To determine the actual
tube, advantageous in situations when flow stations are not installed in airflow, the velocity is multiplied by the cross sectional areas of the
the ductwork. Procedure should be performed with the HRV/ERV on high duct being measured.
speed.
This is an example for determining the airflow in a 6" duct.
The first step is to operate all mechanical systems on high speed, which The Pitot tube reading was 0.025 inches of water.
have an influence on the ventilation system, i.e. the HRV/ERV itself and From the chart, this is 640 feet per minute.
the forced air furnace or air handler if applicable. This will provide the The 6" diameter (D) duct has cross sectional area (A) of
maximum pressure that the HRV/ERV will need to overcome, and allow
A = 3.14 x (D/24) 2
for a more accurate balance of the unit.
A = 3.14 x (6/24) 2
Drill a small hole in the duct (about 3/16), three feet downstream of any A = 0.196 or about 0.2 ft2
elbows or bends, and one foot upstream of any elbows or bends. These
are recommended distances but the actual installation may limit the
amount of straight duct.
The Pitot tube should be connected to a magnehelic gauge or other
manometer capable of reading from 0 to 0.25 in. (0-62 Pa) of water,
preferably to 3 digits of resolution. The tube coming out of the top of the
pitot is connected to the high pressure side of the gauge. The tube com-
ing out of the side of the pitot is connected to the low pressure or ref-
erence side of the gauge.
The airflow is then: 640 ft/min x 0.2 ft2 = 128 cfm
For your convenience, the cross sectional area of some common round
duct is listed below:
DUCT DIAM. (inches) CROSS SECTION AREA (sq ft.)
5
6
7
8
0.14
0.20
0.27
0.35
Insert the Pitot tube into the duct; pointing the tip into the airflow. For
general balancing it is sufficient to move the pitot tube around in the duct
and take an average or typical reading. Repeat this procedure in the
other (supply or return) duct. Determine which duct has the highest air-
flow (highest reading on the gauge). Reduce this airflow using either the
electronic balancing system (if applicable) or damper. The flows should
now be balanced. Actual airflow can be determined from the gauge read-
The accuracy of the airflow reading will be affected by how close to any
elbows or bends the readings are taken. Accuracy can be increased
by taking an average of multiple readings as outlined in the literature
supplied with the Pitot tube.
Place pitot tube a minimum of 18" from blower elbows.
* Pitot tube should be kept at
least 12” away from fans
elbows and dampers to ensure
accurate reading.
Magnehelic
* A calibration decal is included
to place over electronic balanc-
ing system adjustments after it
has been balanced.
Note: Duct connections may
vary, depending on model.
Magnehelic
• The balancing procedure consists of measuring the exhaust air leaving the system and the supply air entering the system and ensuring that these
two are equal. A deviation of 10% or less is acceptable. In such cases, it is recommended to have a greater amount of exhaust air than supply
air as so to increase the supply air’s temperature.
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AIR FLOW BALANCING (CONT'D)
AIRFLOW STATION (GRID) METHOD
B
1 For this flow measuring station, cut
the duct and place the flow
2 Before taking the reading, make sure
3 Adjust the “Supply Air Out” damper
until you reach the desired velocity.
Follow the previous steps to adjust
the “Exhaust Air Out” damper, if
needed.
that the magnehelic gauge is level
and at 0. Refer to the flow
measuring station between each
station. Make sure that the flow
measuring station’s air direction
arrow points in the direction of the
airflow. Secure the flow measuring
station with duct tape.
measuring station’s chart to
determine your unit’s airflow velocity.
• To avoid airflow
turbulence and incorrect
readings, the airflow
velocity should be
18”
18”
(457 mm)
(457 mm)
measured on steel
Measure
here
ducting a minimum of
18” (457 mm) from the
unit or elbow and before
any transition.
Measure
here
ADJUSTING AIRFLOWS
ELECTRONIC BALANCING MOTORS [HRV 150D & 200D only] -
Motors will be factory set at their full potential depending on speed selected.
When unit is installed you will need to balance the motors for proper operation.
Insert screwdriver and turn clockwise to slow down the motor, you will notice the motor changing speeds
while performing this operation. Set to desired cfm.
Use slot screwdriver to
adjust speed/airflow
-
+
Fan
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MAINTENANCE
CAUTION
MAKE SURE UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK
The following components should also be inspected regularly and well maintained.
PRACTICAL
TIPS
Filters need to be checked regularly
• To prevent electrical shock,
check that the unit is
unplugged before doing
FILTERS
The filters (2) need to be
checked and cleaned every
any
repairs
or
three months or when they
appear dirty. Wash in warm
sudsy water (mild detergent)
or use a soft brush vacuum.
The filters should be replaced
when they can no longer be
cleaned properly.
maintenance.
• A yearly inspection is
recommended to ensure
the efficiency and trouble-
free use of your system.
Run through the system
and verify the different
operating modes.
The motor - The motors are
factory balanced and lubri-
cated for life. They require
no maintenance.
HEAT RECOVERY CORE
The heat recovery core needs to be checked and cleaned every six months. The core can be
cleaned using a mild soap and water. Rinse thoroughly. Handle with care. Hot water and a strong
detergent will damage the heat recovery core. It is recommended to clean the core in the sum-
mer or when the temperature is mild. Never clean the heat recovery core during winter.
The unit - The inside of the
unit should be vacuumed
yearly. Be careful not to
damage any of the mechani-
cal components and electri-
cal connections.
To Install the Clean Core and Filters.
Clean Core and Filters Every 3-6 Months.
Unplugged before doing any repairs or mainte-
nance
a) First mount the bottom flange of the core guide into the
bottom channel approximately 1/4” (6mm).
b) Mount the left or right side flange of the core guide
approximately 1/4 “ (6mm) followed by the other side.
c) Mount the top flange of the core guide into the top
channel approximately 1/4” (6mm).
d) With all four corners in place and the core straight and
even, push hard in the center of the core until the core
stops on the back of the cabinet.
a) Open access door.
b) Carefully grip ends of core and pull evenly out
ward. Core may be snug, but will slide out of the
channel.
c) Once removed from the cabinet remove filters.
d) Wash core in warm soapy water (do not use
dishwasher).
The drain pan and drain line -
Units with drain lines should
have their line and connec-
tion checked regularly.
e) Install the clean filters.
f) Install clean core.
Outside hoods - The outside
hoods need to be checked
every season to make sure
there are no leaves or
insects blocking the airflow.
Check regularly that there
are no pollutants near the
intake hood. Make sure they
are clear of any snow accu-
mulation during the winter
months.
NOTE: Some products may not be exactly as illustrated in Installation, Operation and Maintenance manual.
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TROUBLESHOOTING
Problem
Causes
Solutions
Increase the desired level of humidity. Change ventilation mode from
continuous mode to standby.
Air is too dry
Dehumidistat control is set too low
HRV out of balance
Balance HRV
Reduce the desired level of humidity. Combine this step with use of con-
tinuous exchange mode.
Dehumidistat control is set too high
Air is too humid
Wait until outside temperature stabilizes (winter). Heating will also
improve situation.
Sudden change in temperature
Store a majority of your wood outside. Even dried, a cord of wood con-
tains more than 20 gallons of water.
Storing too much wood for heating
Dryer vent exhaust is inside home
Arrange outside vent for dryer.
Open curtains or blinds. Bay or bow windows may require mechanical
method.
Poor air circulating near windows
HRV out of balance
Balance HRV
Open the door or install a grill on the door.
Well sealed basement door is closed
Persistent condensation
on window
Improper adjustment of dehumidistat con-
trol
Reduce the desired level of humidity. Combine this with the use of con-
tinuous exchange mode.
HRV out of balance
Balance HRV
-Clean exterior hoods or vents
-Remove and clean filter
-Remove and clean core
-Check and open grilles
-Have electrician check supply voltage at house
-Check duct installation
Poor Air Flows
-1/4” (6mm) mesh on the outside hoods
is plugged
-Filters plugged
-Core obstructed
-House grilles closed or blocked
-Dampers are closed if installed
-Poor power supply at site
-Ductwork is restricting HRV/ERV
-Improper speed control setting
-HRV/ERV airflow improperly balanced
-Increase the speed of the HRV/ERV
-Have contractor balance HRV/ERV
-Locate the grilles high on the walls or under the baseboards, install
ceiling mounted diffuser or grilles so as not to directly spill the supply
air on the occupant (eg. Over a sofa)
-Turn down the HRV/ERV supply speed. A small duct heater (1kw)
could be used to temper the supply air
-Poor location of supply grilles, the airflow
may irritate the occupant
-Outdoor temperature extremely cold
Supply air feels cold
-Placement of furniture or closed doors is restricting the movement of
air in the home
-If supply air is ducted into furnace return, the furnace fan may need to
run continuously to distribute ventilation air comfortably
-Note: minimal frost build-up is expected on cores before unit initiates
defrost cycle functions
-Have HVAC contractor balance the HRV
HRV and / or Ducts
Frosting up
-HRV air flows are improperly
balanced
-Malfunction of the HRV defrost
system
Condensation or Ice
Build Up in Insulated
Duct to the Outside
-Incomplete vapor barrier around
insulated duct
-A hole or tear in outer duct covering
-Tape and seal all joints
-Tape any holes or tears made in the outer duct covering
-Ensure that the vapor barrier is completely sealed.
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ELECTRICAL CONNECTIONS
Low Voltage Control Wiring Connections
* Please see instruction on individual controls for proper wiring and set up of control selected.
Standard Accessory Control Contact
THERMOSTAT
TERMINALS
R
G
FOUR
WIRE
W
Y
TWO WIRE
heating only
W
R
G
C
Y
NEW CONNECTION PANEL
FURNACE
24-VOLT
TERMINAL BLOCK
COOLING SYSTEM
TWO
WIRE
Alternate Accessory Control Contact
DMFC-REC
or
THERMOSTAT
TERMINALS
DMFC
R
G
W
Y
FOUR
WIRE
TWO WIRE
heating only
RT-15M
W
R
WIRE JOINT
G
MD-2W
or
CT-30M
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
COOLING SYSTEM
TWO
WIRE
MD-4W
MD-2W - Connect
to positive (+) and
negative (-)
connections on elec-
trical panel.
DMFC-REC -
This control is not
polarity sensitive,
therefore you may
connect any wire to
either positive (+) or
negative (-)
connection.
2 wire connection
2 wire connection
2 wire connection
RT-15M - Connect
to positive (+) and
negative (-)
connections on elec-
trical panel.
DMFC -
MD-4W - Connect
to positive (+) and
negative (-)
connections on elec-
trical panel.
This control is not
polarity sensitive,
therefore you may
connect any wire to
either positive (+) or
negative (-)
Also connect to CUR
SW
connection.
4 wire connection
2 wire connection
24
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ELECTRICAL CONNECTIONS (CONT'D)
3 position mode
selection switch
Accessory Control Contact
(Open & Closes contact when HRV/ERV is ON/OFF)
Diagnostic
LED
Custom defrost
mode jumper
selection
U
- +
Air Quality
Sensor
25
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26
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27
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The product is manufactured by Fantech, Inc. Fantech reserves the
right to modify, at any time and without notice, any or all of this
product's features, designs, components and specifications.
United States
1712 Northgate Blvd.,
Sarasota, FL. 34234
Phone: 800.747.1762;
941.309.6000
Canada
50 Kanalflakt Way,
Bouctouche, NB E4S 3M5
Phone: 800.565.3548;
506.743.9500
Fax: 877.747.8116; 506.743.9600
Item #: 402950 Rev. 1
Rev Date: 11022006
Fax: 800.487.9915; 941.309.6099
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