Installation
Owner
Maintenance
Vertical Unit Ventilator
Classroom Unit Ventilator
Model VUV
Models
“A” and later Design Sequence
VUVE
750 CFM – 1500 CFM
October 2007
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Contents
Installation/Startup/Commissioning
Pre-installation Checklist
4
4
5
General Information
7
Dimensions/Weights
14
24
Installation Instructions
Electrical Requirements
26
27
Pre-Startup Checklist
Maintenance
30
31
33
Warranty Information
Troubleshooting Checklist
Unit Wiring
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Pre-installation
Checklist
Jobsite Inspection
Always perform the following checks before accepting a unit:
1. Verify that the nameplate data matches the data on the sales order and bill of
lading (including electrical data).
2. Verify that the power supply complies with the unit nameplate specifications.
3. Visually inspect the exterior of the unit, for signs of shipping damage. Do not
sign the bill of lading accepting the unit(s) until inspection has been com-
pleted. Check for damage promptly after the unit(s) are unloaded. Once the
bill of lading is signed at the jobsite, the unit(s) are now the property of the
SOLD TO party and future freight claims MAY NOT be accepted by the freight
company.
Microbial Growth!
Wet interior unit insulation can become an amplification site for
microbial growth (mold), which may cause odors and damage to the
equipment and building materials. If there is evidence of microbial
growth (mold) on the interior insulation, the insulation should be
removed and replaced prior to operating the system.
Jobsite Storage
This unit is intended for indoor use only. To protect the unit from damage due to
the elements, and to prevent possible IAQ contaminant sources from growing.
1. Place the unit(s) on a dry surface or raise above the ground to assure ade-
quate air circulation beneath the unit.
2. Cover the unit(s) with a water proof tarp to protect them from the elements.
3. Make provisions for continuous venting of the covered units to prevent
moisture from standing on the unit(s) surfaces. Wet interior unit insulation
can become an amplification site for microbial growth (mold) which can be a
cause of odors and possible indoor air quality problems.
4. Do not stack units.
4
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General
Information
Unit Nameplate
nance (oiling is not needed), and/or
bearing replacement.
The unit nameplate is located in the
left hand end pocket, behind the con-
trol box. It includes the unit model
number, serial number, electrical char-
acteristics, and other pertinent unit da-
ta.
Filters
Filter sizing for the unit ventilator are
an off-the-shelf design to reduce or
help eliminate local stocking of the fil-
ters.
Factory Shipment
Sliding Fan Deck
Before shipment, each unit is leak test-
ed, and run tested for proper control
operation.
Convenient access to the fan motor
and wheels for maintenance and ser-
viceability may be made through
Trane’s easy-slide fan deck design.
Access
A three panel front access of the unit
ventilator allows for speedy set-up
during field commissioning. This de-
sign allows for the end pocket of the
unit ventilator to be open while the fan
(airside) section stays closed.
Outside/Return-Air Dampers
The outside-air/return-air damper is a
one piece, linkage free design result-
ing in a superior air-tight seal.
Field Installed Controls
(Option)
The unit comes equipped with a fan
speed switch, damper blade (only),
and an optional low temperature de-
tection.
End Pockets
Access for piping and controls is made
through the unit ventilator’s end pock-
ets.
Coil Connections
End Device Control Package
(Option)
The coil headers and drain connec-
tions are made within the unit chassis
to allow a tight seal and help prevent
air leakage around the coil. The con-
nection sizes vary dependent upon
type of coil combination specified.
Units containing the End Device con-
trol design will incorporate a pre-
wired, selected control components to
a terminal strip for wiring a field pro-
vided controller and temperature sen-
sor.
Coil Type
Size (in.)
Hydronic Cooling (Main) Coil or
Heating/Cooling Changeover Coil
3/4" Nominal
7/8" I.D.
Note: for controller operation malfunc-
tion of any non-Trane, field installed
controls, consult the literature or tech-
nical support of the controls manufac-
turer.
1/2" Nominal
5/8" I.D.
Heating (Auxiliary) Coil
Steam Heating Coil
1" FNPT
3/8" O.D. Liquid
7/8" O.D. Suction
Direct Expansion Coil
Tracer™ ZN520 Control Package
(Option)
Unit Drain Pan
The ZN520 electronic digital controller
is a factory installed, tested and com-
missioned LonTalk™ certified design.
It may be used in a stand-alone control
scheme, or as part of a building auto-
mation system. The controller is pre-
wired to Trane selected control com-
ponents best suited for room comfort.
For more information on the ZN520
unit controller operation and service
issues, refer to CNT-SVX04A-EN
(ZN520 control manual).
The drain pan is dual-sloped for effec-
tive condensate removal. It is made
from a non-corrosive material to help
eliminate issues associated to leaking
or standing water. It may be easily re-
moved for cleaning. The drain pan
connection size for all Trane VUVE
models is 7/8" O.D.
Motor
Motors for the VUVE model do not in-
clude an external fan bearing on the
end of the fan shaft. This helps avoid
issues related to fan bearing mainte-
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General
Information
OA/RA Actuator (Option)
Table 1: OA/RA actuator specification
Table 2: Face-bypass actuator specification
The OA/RA actuator provides true
spring return operation for positive
close-off of the OA/RA damper. The
spring return system of the actuator
closes the outside damper if power is
lost to the building. When ordered
with factory controls, the actuator is a
3-point floating design. A 2 to 10 VDC
actuator is available when other than
Trane controls are specified. See Table
1 for OA/RA technical data.
Power Supply
24 VAC
24 VAC
20% 50/60 HZ
10%
Power Supply
24 VAC
20% 50/60 HZ
10%
Power
Running: 2.5 W
24 VAC
2 W
Consumption Holding: 1 W
Transformer
Sizing
Overload
Protection
Control Signal 2 to 10 VDC
3-point floating with Trane controls
Angle of
Rotation
Torque
Direction of
Rotation
Position
Indication
Run Time
(nominal)
Power
5 VA (class 2-power source)
Consumption
Transformer
Sizing
Angle of
Rotation
Torque
Direction of
Rotation
Position
Indication
Run Time
(nominal)
Manual
3 VA (class 2-power source)
Electronic throughout 0 to
95-degree rotation
Maximum 95-degree
Adjustable with mechanical stop
35-inch/lb
Note: Because the damper actuator is
a spring return type an inner spring
will close the damper upon loss of
power. If the need to service or replace
the actuator is required, the spring
must be "loaded" for the damper to
function properly. The term loaded
means that the blade must be held in
the return air position upon replace-
ment of the actuator.
Maximum 95-degree
Adjustable with mechanical stop
35-inch/lb
Spring return reversible with CW/
CCW mounting
Visual indicator, 0 to 95-degrees
Reversible with switch L/R
Clip-on indicator
90-second constant
External push button
Less than 35 dB
90-second constant (independent of
load)
Running: 30 dB
Override
Noise Level
Control Signal 3-point floating
Noise Level
Face and Bypass Actuator (Option)
The face and bypass damper actuator
incorporates a direct couple design. It
provides electronic protection against
overload. A limit switch is not includ-
ed, nor required as part of the design.
When reaching the damper end posi-
tion, the actuator automatically stops.
The gears can be manually disen-
gaged with a button on the housing.
See Table 2 for face and bypass actua-
tor specifications.
Table 3: Mod. water valve specification.
Table 4: Isolation valve specification.
Power Supply
Power Supply
24 VAC
4 W
-
50/60 HZ
24 VAC
5 W
-
50/60 HZ
Power
Power
Consumption
Max. Duty Cycle
Nominal Timing
Operating Ambient
Temp.
Consumption
Max. Fluid Temp.
15%
120 sec.
0 to 65°C
32 to 150°F
94°C
200°F
1°C
Min. Fluid Temp.
34°F
Modulating Water Valves (Option)
The modulating control valve provides
optimum control of hot and chilled wa-
ter flow in various heating and cooling
applications. They are designed to
provide sinusoidal valve actuator trav-
el and operate silently, resisting water
hammer.
Min./Max. Fluid Temp. 1 to 95°C
34 to 203°F
Max. Operating Pressure
Max. Close-off Pressure
300 psi
1/2" = 30 psi
3/4" = 20 psi
1" = 15 psi
Operating Pressure
Differential
Max. - 4 bar (60 psi)
Pressure Rating
Static - 20 bar (300 psi)
Burst - 100 bar (1500 psi)
Linear
Flow Characteristic
The actuator on the valve is a 24V, 3-
point floating type. See Table 3 for
modulating water valve specifications.
Isolation Valve (Option)
On heating coils, and two-pipe changeover applications, the valve is normally
open to help prevent the coil from freezing in-case of power loss.
For cooling, the valve is normally closed and opens when there is a call for cool-
ing. See Table 4 for isolation valve specifications.
The isolation valve is a two position
24V, spring return type valve. It pro-
vides added control in heating and
cooling applications when used in
conjunction with the face and bypass
damper.
6
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Dimensions/Weights/
Clearance
!
WARNING
Improper Unit Lift!
Test lift unit approximately 24 inches to verify proper
center of gravity lift point. To avoid dropping of unit,
reposition lifting point if unit is not level. Failure to
properly lift unit could result in death or serious injury
or possible equipment or property-only damage.
Table G1: VUVE general data
Description
Unit Size
0750
69
16 5/8
1000
81
1250
93
1500
105
Unit Length w/o end covers (inches)
Unit Depth - Standard (inches)
Unit Depth - with false back (inches)
Unit Height - Standard (inches)
Shipping Weight (Lbs.)
16 5/8
21 1/4
30
16 5/8
16 5/8
21 1/4
21 1/4
21 1/4
30
30
30
320
405
450
470
14 x 20 x 1 (2)
14 x 24 x 1 (1)
14 x 30 x 1 (1)
7 x 54 x 1 (1)
14 x 20 x 1 (2)
14 x 24 x 1 (1)
7 x 66 x 1 (1)
14 x 24 x 1 (2)
14 x 30 x 1 (1)
7 x 78 x 1 (1)
Nominal Filter Size and
Quantity (inches)
7 x 42 x 1 (1)
Dynamic Air Filter Nominal
Size (inches) & Qty.
7/8 ID Hose
FC / 2
7/8 ID Hose
FC / 2
7/8 ID Hose
FC / 4
7/8 ID Hose
FC / 4
Drain Connection Size (inches)
Fan Type / Quantity
Motor Data
Quantity
Horsepower (ea)
Number of Fan Speeds (Standard)
If DX or electric heat used
Number of Fan Speed (ZN520)
1
1/4
3
1
1/4
3
2
1/10
3
2
1/10
3
1
1
1
1
3
3
3
3
If exhaust fan or ERSA used
If DX or electric heat used
2
2
2
2
1
1
1
1
Coil Volume (gal.)
Coil Type A
0.178
0.311
0.311
0.444
0.444
0.610
0.610
0.395
0.228
0.410
0.410
0.571
0.571
0.809
0.809
0.593
0.277
0.510
0.510
0.704
0.704
1.014
1.014
0.742
0.327
0.610
0.610
0.931
0.931
1.213
1.213
0.837
B
C
D
E
F
G
H
Unit Location and Clearances
service personnel to perform mainte-
nance or repair. Provide sufficient
room to make water, and electrical
connection(s). Local and national
codes should be followed in providing
electrical power connections. A 36"
clearance at the unit front is sufficient
for maintenance and service of the
equipment.
Locate the unit in an indoor area. The
ambient temperature surrounding the
unit must not be less than 45°F. Do not
locate the unit in areas subject to
freezing.
Attention should be given to service
clearance and technician safety. The
unit should contain enough space for
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Dimensions
Standard Depth Unit
8
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Dimensions
Falseback Unit
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Dimensions
Dynamic Air Barrier Unit
10
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Dimensions
End Covers
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Dimensions
Wall Boxes
12
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Dimensions
Crossover Piping
16 5/8" DEPTH UNIT
7/8" I.D. FIELD
CONN.W/ SHUT
OFFVALVE
1 1/2"
FLUSH
RETURN
3"
S R
SUPPLY
24"
3 1/2"
4 1/2"
19 3/8"
TOPVIEW
3 5/8"
5 3/8"
SIDEVIEW
21 1/4" DEPTH UNIT
7/8" I.D. FIELD
CONN. W/ SHUT
OFF VALVE
1 1/4"
FLUSH
RETURN
3"
SUPPLY
S R
24"
19 3/8"
3 1/2"
4 1/2"
TOPVIEW
8 1/4"
10"
SIDEVIEW
Notes: 1-3/8" o.d. and 2-1/8" o.d. crossover piping
1
2
Crossover piping is available for all 2 or 4-pipe coils selections. Trane pro-
vides the crossover for the cold water only. The crossover pipe is factory in-
sulated with 3/8"-thick insulation.
Expansion compensation between the factory piping package and the cross-
over piping is achieved using a flex hose rated at 250 psi working pressure.
flex hose is only available with factory mounted piping packages.
Expansion compensation for the crossover piping must be handled external
to the unit ventilator.
Crossover connections terminate in the same end pocket as the main coil con-
nection. The main coil connection for 2-pipe systems is the heating coil. the
main coil connection for 4-pipe systems is the cooling coil.
3
4
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Installation
Interior Wall
w/ sheetrock
Wall Box Installation
Installation in Masonry Walls
A typical method of installing the wall
box in a masonry wall opening is
shown in Figure 1.
The following instructions are general
recommendations for installing wall
intake boxes. Consult the architectural
plans for specific requirements.
Outside
Wall
Unit
Grout the top and bottom of the wall
box frame as noted. A sloped water
dam located in the space between the
unit and wall facilitates moisture
drainage. Grouting at the ends of the
intake box will complete the seal be-
tween the wall box frame and the ma-
sonry opening.
Additional materials required to com-
plete any specific installations (such as
duct connections, metal mounting
plates, or flanges) are not furnished by
Trane.
Rubber
Seals
Grout
Weep
Holes
Floor
For best results, all air intake boxes
should be removable from outside of
the building. Weep holes must be at
the bottom to permit free drainage. A
positive air and moisture seal should
be provided around all edges.
Installation in Curtain Walls
In all cases, the wall intake box should
be caulked to provide a tight, weather-
proof seal, Figure 2.
Water dam sloped
toward exterior
Figure 1: Masonry wall installation
General Instructions
Note: A minimum of 2-1/8” of clear-
ance must be maintained between the
exterior wall and back of the unit. Fail-
ure to provide this gap will not allow
the wall box to fit properly.
Trane wall boxes are illustrated in the
dimensional section of this manual.
Dimensions are actual, and may be
used to define the wall opening.
Interior Wall
w/ sheetrock
Outside
Wall
Unit
Vertical louvers in the wall intake box
provide extra strength for a high load
bearing capacity. The lintel may be
omitted on masonry wall installations.
Caulking
Rubber
Seals
Weep holes are provided in the out-
side face of the bottom channel in the
wallbox frame. Install all wall boxes to
permit free drainage through the weep
holes to the outside of the building.
Flanged
wallbox
Weep
Holes
All wallboxes are furnished with dia-
mond pattern expanded aluminum
bird screen.
Note: V1 and V2 (vertical) wall models
are all unflanged. H2, V3 and V6 are
flanged.
Water dam sloped
toward exterior
Figure 2: Flanged wall box installation
in 2" curtain wall
14
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Installation
General Installation Checks
Location Considerations
Selecting the appropriate location for
installing a unit is very important. The
following factors should be consid-
ered:
5
6
Internal access to the unit is pro-
vided by the removable front pan-
el. Sufficient space should be
allowed to lift the panel for mainte-
nance purposes.
The checklist below is a summary of
the steps required to successfully in-
stall a unit. This checklist is intended to
acquaint the installing personnel with
procedures required in the installation
process. It does not replace the de-
tailed instructions called out in the ap-
plicable sections of this manual.
1
Floor design must have sufficient
structure to withstand the weight
of the unit while allowing for
openings in the floor for a return
air duct, electrical and piping sup-
ply lines fed through the floor.See
page 7 for unit weights.
Ensure the floor surface is level.
Note: The unit leveling legs can be
adjusted to accommodate slight
out-of-level installation surfaces.
1
Carefully remove the stretch wrap
and top cardboard cover. Check
the unit for shipping damage and
material shortage; file a freight
claim and notify appropriate sales
representation. If end panels have
been ordered, the panel will al-
ready be mounted to the unit.
Unit Mounting
Note: All wall intake boxes should be
installed prior to mounting the unit
ventilator. Refer to Page 14 for wall
box installation instructions.
2
Wall space design should allow the
unit to be mounted to the wall se-
curely. The wall surface behind
the unit should be smooth and lev-
el. Wall and floor moldings should
be removed prior to installation. A
wall slightly out of level may cause
problems with unconditioned air
leaking into the room. Remove
any object projecting more then
1/8” (.3175cm) from the wall sur-
face. Note: Additional gasket or
furr strips may be installed to ac-
commodate for an uneven wall.
The 1/2” mounting or anchoring holes
are located on the back of the unit on
each end. See Figures 3.
Note: The unit ventilator is pack-
aged in clear stretch wrap to allow
for immediate visual inspection. A
protective cardboard cover helps
prevent scratching and other cos-
metic blemishes during transport.
Note: All mounting fasteners are to be
provided by the installer.
2
3
Remove remaining cardboard
blocking.
Remove the unit’s left front panel
to verify nameplate/sales order
number is correct. It is located be-
hind the control box.
3
There are two removable knock-
outs in the rear of the unit, on ei-
ther end, for piping and electrical
supply lines. A pipe chase is locat-
ed in the upper back portion of the
unit for crossover piping. The out-
side air opening is located in the
lower back of the unit and the path
to the wallbox on the outside wall
should be unobstructed.
4
Remove shipping bracket from the
lower rear corners of the unit to
separate the unit from the skid. Ac-
cess to the screws holding the
bracket to the skid is obtained in-
side the unit.
4
The physical layout of the room
should accommodate any accesso-
ries ordered with the unit. Condi-
tioned air is distributed through
the grille on top of the unit and re-
turned through the return air grille
on the bottom of the unit. Avoid
placing any objects that may ob-
struct either grille or interfere with
airflow.
5
6
Rotate the fan wheels manually.
The wheels should move freely
and be in proper alignment. Visu-
ally inspect the fan area for ob-
structions or shipping damage.
Remove all applicable knockouts
for coil piping and electrical con-
nections.
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Installation
Figure 3: Mounting hole location
F
E
C
B
C
B
D
A
B
C
D
E
F
Standard Unit (no Falseback)
Standard falseback
1.31
1.00
1.00
1.00
1.00
1.00
1.00
1.31
1.00
1.00
1.00
1.00
1.00
1.00
1.31
1.00
1.00
1.00
1.00
1.00
1.00
1.31
1.00
1.00
1.00
1.00
1.00
1.00
13.50
2.13
2.13
2.13
2.13
2.13
2.13
13.50
2.13
2.13
2.13
2.13
2.13
2.13
13.50
2.13
2.13
2.13
2.13
2.13
2.13
13.50
2.13
2.13
2.13
2.13
2.13
2.13
2.75
66.39
67.00
67.00
67.00
67.00
67.00
67.00
78.39
79.00
79.00
79.00
79.00
79.00
79.00
90.39
91.00
91.00
91.00
91.00
91.00
91.00
102.39
103.00
103.00
103.00
103.00
103.00
103.00
10.38
10.00
10.00
10.00
10.00
10.00
10.00
10.38
10.00
10.00
10.00
10.00
10.00
10.00
10.38
10.00
10.00
10.00
10.00
10.00
10.00
10.38
10.00
10.00
10.00
10.00
10.00
10.00
45.64
47.00
47.00
47.00
47.00
47.00
47.00
57.64
59.00
59.00
59.00
59.00
59.00
59.00
69.64
71.00
71.00
71.00
71.00
71.00
71.00
81.64
83.00
83.00
83.00
83.00
83.00
83.00
075
100
125
150
26.00
24.44
23.44
22.44
21.44
20.44
2.75
29" stepdown falseback
28" stepdown falseback
27" stepdown falseback
26" stepdown falseback
25" stepdown falseback
Standard Unit (no Falseback)
Standard falseback
26.00
24.44
23.44
22.44
21.44
20.44
2.75
29" stepdown falseback
28" stepdown falseback
27" stepdown falseback
26" stepdown falseback
25" stepdown falseback
Standard Unit (no Falseback)
Standard falseback
26.00
24.44
23.44
22.44
21.44
20.44
2.75
29" stepdown falseback
28" stepdown falseback
27" stepdown falseback
26" stepdown falseback
25" stepdown falseback
Standard Unit (no Falseback)
Standard falseback
29" stepdown falseback
28" stepdown falseback
27" stepdown falseback
26" stepdown falseback
25" stepdown falseback
26.00
24.44
23.44
22.44
21.44
20.44
16
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Installation
Unit Mounting
rather than the holes located in the
unit’s end pockets.
End Panels
Note: All wall intake boxes should be
installed prior to mounting the unit
ventilator. Refer to Page 14 for wall
box installation instructions.
When ordered as an option, end cov-
ers ship already attached to the verti-
cal unit ventilator. The following
section is for installing end covers pur-
chased as an add-on.
Note: Ensure the unit is level. Coils
and drain pans inside the unit are
pitched properly for draining before
shipment.
The 1/2” mounting or anchoring holes
are located on the back of the unit on
each end. See Figure 3.
It is recommended end panels be in-
stalled on the unit ventilator after all
piping, wiring and accessory installa-
tion is completed. To install the end
panel:
5
Ensure the unit rests tightly
against the wall. Check for proper
seal and that air does not leak un-
derneath the unit.
1
Note: All mounting fasteners are to
be provided by the installer. Check
the gasket on the rear of the unit
and around the fresh air open-
ing. Gaps around the openings
can lead to outside air leaks into
the room.
1
Insert the four factory provided
metal studs into the four pre-
mounted nuts on the inside of the
panel.
Subbase (option)
A subbase may be used to increase the
unit height and aid in leveling the unit.
The subbase is shipped separately for
field installation. Slots and leveling
screws are provided on the subbase.
2
Remove all electrical and piping
knockouts where required for in-
stallation.
2
3
4
Align each stud with the four pre-
drilled holes on the side of the
unit.
1
Remove the leveling legs provided
with the unit. See Figure 4.
Secure the panel to the unit by fas-
tening with the four factory pro-
vided nuts.
!
WARNING
Unit Base
Improper Unit Lift!
Test lift unit approximately 24
inches to verify proper center of
gravity lift point. To avoid drop-
ping of unit, reposition lifting
point if unit is not level. Failure to
properly lift unit could result in
death or serious injury or possible
equipment or property-only dam-
age.
Weld
Nuts
Do not overtighten screws.
Subbase
2"- 6"
CAUTION
Equipment Damage!
For leveling legs
Do not run units for any length of
time without all panels and filters
properly installed. Failure to do so
may result in equipment failure.
Figure 4: Subbase with leveling legs
2
Set the unit on the subbase and
fasten with four, 3/8” x 16’ x 1”
hex head cap screws and 3/8" lock
washers.
3
Set the unit into selected location
and adjust leveling legs if neces-
sary to ensure level fit.
Note: Care should be taken when
handling the unit to ensure that the
front return air grille does not
bend.
Note: Hex screws and lock wash-
ers are provided by the factory.
They are located in a baggy and are
used to attach the base to the unit
ventilator. Pre-drilled slots in the
subbase flange will line up with
the weld nuts in the bottom of the
unit.
4
Push the unit tightly against the
wall to compress the seal on the
back edge of the unit and intake
opening. Anchor the unit by using
the 1/2” mounting holes in both
end pockets.
3
The bottom of the subbase has
weld nuts in four slots. Place the
leveling legs in those slots and lev-
el the unit.
Units containing a falseback; The
falseback unit ventilator contains
mounting holes located on the
falseback metal. Use these holes
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Installation
Piping Installation
7
After the condensate drain piping
has been completed, check water
flow to ensure the system proper-
ly carries and away all condensate
accumulation.
Installation Crossover Piping
Crossover piping is available for all hy-
dronic coils. It is either 1 3/8’’ \[34.9\] or
2 1/8’’ \[54\] in diameter (O.D.) as spec-
ified by the customer. Crossover pip-
ing can be found in either the left or
right hand end pocket. See crossover
submittal drawings page 13 for dimen-
sional data.
Before installation of piping package,
the shipping bracket holding the pip-
ing in place, must be removed.
Proper installation of piping is neces-
sary to provide efficient coil operation
and to prevent damage during opera-
tion. Follow standard piping practices
and include all accessories as neces-
sary.
Note: A P-trap is factory supplied in ev-
ery vertical unit ventilator.
Trane Piping Packages (Option)
Trane Standard Piping Package in-
cludes a 2-way or 3-way valve with by-
pass balance valve, ball valves, Pete’s
plugs and unions. A strainer and cir-
cuit balancing valve are optional.
On 4-pipe coils, crossover piping con-
nects to the main cooling coil.
Piping connection knockouts are
shown pages 8 to 10. Field connection
types and sizes for unit coils are listed
in Table 5. These sizes are provided for
field piping connection.
Factory insulation is provided on all
crossover piping.
1
All union connections should be
tightened in the field. Units are
shipped with union connections
hand tightened only in the factory.
When a Trane piping package is or-
dered, it is installed with the connec-
tions made to the supply and return of
both the coil and the crossover piping.
However, supply and return connec-
tions must be made in the field when a
piping package is furnished by the in-
staller.
A 7/8’’ OD condensate drain connec-
tion is provided on the chilled water
supply end of the unit.
Note: All connections made in the field
should be sweat connections.
1
Attach a flexible condensate drain
hose over the drain pan connec-
tion and secure with a hose clamp.
Piping packages are not shipped insu-
lated. Any insulation should be provid-
ed in the field by the installing
contractor.
The crossover piping is located at the
back of the unit along the wall and the
ends of the piping are flush with the
end of the unit.
The drain pan on the vertical is vacu-
um molded with a drain connection
and P-Trap on the cooling coil, connec-
tion side.
The auxiliary drain pan (optional) is
the main condensate connection to
the unit when specified. The chilled
water or DX coil drain pan will empty
into the auxiliary drain pan if a factory
installed, auxiliary pan is ordered. All
field piping condensate connections
should be made at the auxiliary drain
pan.
Expansion compensation between the
piping package and the crossover pip-
ing is achieved using flex hoses rated
at 250 psi working pressure. Expan-
sion compensation for the crossover
piping must be handled external to the
unit ventilator.
Note: Condensate removal to the main
system should be made through the
bottom of the unit ventilator. If other
location for condensate removal is de-
sired, a specific field cut-out for the
connection should be made in the back
of the unit ventilator. To help avoid
cold air infiltration, the field cut-out
should only be large enough to allow
for the condensate hose to exit the
unit.
Table 7: Coil data for field piping
Coil Type
Connection Location
Field Connection Size
7/8" OD/5/8" OD
4-Pipe Chilled Water/Hot Water
2-Pipe Changeover Coil
Hot Water Only
Steam
Left or Right (opposite ends)
To field reverse the slope of a vertical
unit drain pan.
Left or Right
Left or Right
7/8" OD
7/8" OD
2
Slide out fan deck (disconnecting
the condensate line and fan plug
will release fan deck for sliding).
Left or Right
1" MPT
Chilled Water/Electric Heat
Chilled Water/Steam
DX
Left Cooling
7/8" OD
Left or Right
7/8" OD/1" MPT
3
4
Remove pipe clamp that hold the
p-trap to the drain pan.
Left
7/8" Suction, 3/8" Discharge
7/8" Suction, 3/8" Discharge/5/8" OD
7/8" Suction, 3/8" Discharge/1" MPT
7/8" Suction, 3/8" Discharge/NA
NA
DX/Hot Water
Left Cooling/Right Heating
Left Cooling/Right Heating
Left Cooling/Right Heating
Right
DX/Steam
Remove clips that hold the drain
pan in-place.
DX/Electric Heat
Electric Heat
5
6
Lift and rotate the drain pan.
Notes:
Reconnect p-trap to the drain pan
and replace clips to secure the pan
to the fan deck.
1. Supply and return connections are located on the same end of each coil.
2. All Trane piping packages have union connections; all units with piping packages by others have sweat
connections.
3. Coil connections are sweat except steam coils, which are threaded.
18
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Installation
Split System Units
Steam Piping
The following refrigerant piping and
interconnecting wiring instructions
apply to unit ventilators with direct ex-
pansion type cooling coils used in con-
junction with air-cooled condensing
units. Reference must also be made to
the condensing unit installation and
wiring manuals which are shipped
with the condensing unit.
When air, water or another product is
heated, the temperature or heat trans-
fer rate can be regulated by a modulat-
ing steam pressure control valve.
Since pressure and temperature do
not vary at the same rate as load, the
steam trap capacity, which is deter-
mined by the pressure differential be-
tween the trap inlet and outlet, may be
adequate at full load, but not some
lesser load.
Note: The ETL listing mark applied to a
unit ventilator does not apply to any
associated refrigerant condensing
unit.
There are detailed methods for deter-
mining condensate load under various
operating conditions. However, in
most cases this is not necessary if the
coils are piped as shown in Figure 5.
Follow the procedure documented in
the ASHRAE Systems Handbook,
Steam Systems.
Refrigerant Piping
Unit ventilators with direct expansion
cooling contain a nitrogen holding
charge in the evaporator coils. Con-
nections are ‘‘pinched-off’’ at the fac-
tory.
Temp. Regulating Valve
To connect the condensing unit lines,
cut off the stubouts and swage. The
condensing unit lines can then be
brought into the swage and brazed.
Trane recommends the use of nitro-
gen purge when brazing refrigerant
lines to prevent formation of oxides in
the lines.
Coil
To Condensate
return
H= 12"
minimum
Vacuum Equalizer
F&TTrap
See text for sizing
Install the refrigerant suction and liq-
uid lines as described in the condens-
ing unit installation instructions. The
TXV is factory installed on the Unit
Ventilator. Piping should be run
straight out through the back of the
unit. Access piping knockouts are lo-
cated in the rear panels of the unit, as
shown in dimensional section of this
manual.
Gravity flow to
vented receiver
Figure 5: Steam piping
Recommended refrigerant line con-
nections for various unit combinations
are given in Table 7. Typical Superheat
Charging Charts are shown in the
Trane Service Facts found in the con-
densing unit section manual. Refriger-
ant charge weights can also be
determined with your local Trane
sales engineer using a valid Trane Se-
lection Program.
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Installation
Figure 6b: Steam piping
Modulating Water Valves (Option)
The actuator on the valve is a 24V, 3-
point floating valve. The actuator can
be easily removed from the valve body
by pressing in on the locking tab and
rotating the actuator 45° counter-
clockwise (See Figure 6a). The 2-way
valves are bi-directional flow. The 3-
way valves can be mixing or diverting
(See Figure 6b).
Use the following steps to complete
cartridge assembly removal:
Closed
Open
1
2
Remove valve actuator.
B
Remove the cartridge assembly
from the valve body with the en-
closed tool.
A
3
4
Solder the valve in accordance with
normal soldering practices.
Re-install the cartridge after solder-
ing by tightening until it bottoms
out. The top surface of the car-
tridge will be flush with the top
edge of the body casting.
B
A
Note: The actuator must be removed if
soldering is being conducted near the
valve. High heat may cause damage to
the actuator’s plastic body/mecha-
nisms.
2-way valve
Note: Do not overtighten. Maxi-
mum torque is 40 in-lb.
AB<->B
B
5
Replace valve actuator and wire in
accordance with instructions.
Plumbing the Valve
The valve may be plumbed in any an-
gle but preferably not with the actua-
tor below horizontal level of the body.
Make sure there is enough room
around the actuator for servicing or re-
placement.
AB
AB<->A
A
For use in diverting applications, the
valve is installed with the flow water
entering through the bottom AB port
and diverting through end ports A or
B. In mixing applications the valve is
installed with inlet to A or B and outlet
through AB.
3-way valve
AB
On applications without the optional,
factory installed piping packages, it is
important to remove the cartridge as-
sembly from the valve body with the
provided tool (Figure 7).
Mount directly to the tube or pipe. Do
not grip the actuator while making or
tightening plumbing connections. Ei-
ther hold valve body by hand or attach
an adjustable spanner (38mm/1-1/2”)
across the hexagonal or flat faces on
the valve body. See Figure 8.
Figure 6a: Remove modulating valve
actuator by pressing in tab (inset) and
turning actuator 45° counterclockwise.
Figure 7: Cartridge removal tool
Figure 8: Proper plumbing technique
for modulating valves
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Installation
Manually Opening Valve
the normally open (NO) or normally
closed (NC) contacts, driving the valve
to an intermediate position until a fur-
ther change at the controller.
Figure 12: Removing valve actuator
The manual opener can be manipulat-
ed only when in the up position. The A
port can be manually opened by firmly
pushing the white manual lever down
to the midway position and pushing
the lever in. In this position, both A
and B ports are open. This “manual
open” position may be used for filling,
venting and draining the system or
opening the valve during power fail-
ure.
The valve is set between the limits of
the controller to satisfy various load
requirements. In the event of power
failure, the valve will stay in the posi-
tion it was in before loss of power.
When power is restored, the valve will
again respond to controller demand.
The valve can be closed by depressing
the white lever lightly and then pulling
the lever outward. The valve and actu-
ator will return to the automatic posi-
tion when power is restored.
Isolation Valves
Installation
The valve can be mounted in any posi-
tion on a vertical line. If the valve is
mounted horizontally, the actuator
must be even with or above the center
line. Make sure there is enough room
to remove actuator cover for servicing.
Mount the valve on the tube or pipe.
To install the actuator to the valve
body:
Note: If the valve is powered open, it
cannot be manually closed, unless the
actuator is removed.
3
Align the slot on the shaft of the
valve with the valve body notch on
side of body. See Figure 13.
Wiring
Note: Ensure the flow through the
valve is in the direction indicated by
the arrow stamped on the valve body.
A controller and a separate transform-
er is required to operate each valve.
See Figures 9 and 10. Port A “open”
and “closed” denote valve open and
closed positions.
Figure 9: Wiring for modulating valve
actuator
Figure 13: Installing isolation valve
Figure 11: Proper mounting for
4
5
Install body valve into pipe.
isolation valves.
Wiring connections may be made
either before or after actuator in-
stalled on body.
Servicing/Removal of Valves
The actuator can be removed from the
valve body. Removing the actuator is
recommended if soldering is being
conducted near the valve. To remove
the actuator:
6
7
Place the manual operating lever
on the actuator in the OPEN posi-
tion.
Align actuator coupling to slot on
the shaft of the valve body and fit
the head onto the valve body to
ensure the shaft seats correctly,
Figure 11.
Figure 10: Wiring for modulating valve
1
Place the manual operating lever
actuator
to the Open position, Figure 12
The typical floating controller is an
SPDT controller with a center-off posi-
tion. On a change in temperature from
the set point, the controller will close
2
Depress the locking button and lift
actuator until it separates from the
valve body.
8
Press the actuator and valve body
until it secures together.
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Installation
Soldering procedures are as
follows:
Wiring
Supply Power
All classroom unit ventilators have
115V motor power. Motor data can be
found in Tables G1.
1
Remove actuator as stated earlier.
CAUTION
2
Place valves on the pipe. Rotate
valve stem so the shaft slot points
at the notch in the side of the body
(90° to flow direction). This pro-
tects the plug inside the valve by
removing it from the seat, Figure
14.
Use Copper Conductors
Control Power
Only!
Unit terminals are not designed to
accept other types of conductors.
Failure to use copper conductors
may result in equipment damage.
!
WARNING
Hazardous Voltage!
Disconnect all electric power, in-
cluding remote disconnects be-
fore servicing. Follow proper
lockout/tagout procedures to en-
sure the power can not be inad-
vertently energized. Failure to
disconnect power before servic-
ing could result in death or seri-
ous injury.
Power supply wiring is to be connect-
ed to terminals 1 and 2 at the junction
box in the left end pocket, below the
discharge air grille.
3
Sweat the joints, keeping outer
surface free from solder.
Note: Do not use silver solder due
to high temperature require-
ments.
Electric Heat (option)
Supply Power
Supply power wiring is to be connect-
ed to the following line terminals in
the right hand end pocket:
CAUTION
Equipment Damage!
-Wiring diagrams provided in this
manual are for reference only. Ac-
tual wiring for particular options/
units may vary. Refer to the dia-
gram provided on the equipment
for specific information. Failure to
do so may result in equipment fail-
ure.
•
208V or 240V, 3-phase,
3 wire system: L1, L2 and L3.
•
480V, 3-phase, 4 wire system:
L1, L2, L3 and N (neutral)
See Page 34 for a typical unit line and
interconnecting wiring diagram for
Electric Heat Coils.
Figure 14: Preparation for soldering
-When installing field provided
controls, do not alter or remove
any built-in unit safeties. Tamper-
ing with unit safeties may cause
unit overheating and possible fire
hazard.
-Do not remove or alter the wiring
of the Time Delay Relay (DL). Do-
ing so may result in premature
motor failures.
CAUTION
Heating Coils with Direct
Expansion Cooling
Heating options for direct expansion
cooling in the unit ventilator are hot
water, steam or electric heat.
Equipment Damage!
480 V/3-Wire is NOT compatible
with Trane Classroom Unit Venti-
lator equipment. There must be a
4-wire system with a separate
ground. Failure to provide a 4-wire
system may result in equipment
damage.
These coils facilitate direct expansion
cooling with standard capacities. The
supply and return connections are lo-
cated in the right hand end pocket. Hot
water field connections are made with
a 5/8’’ \[15.9\] OD male sweated joint,
while steam coils have a 1’’ \[25.4\]
male pipe thread (MPT) connection.
See Table 7 for coil connection sizes.
Note: The supply neutral wire must
be connected to the neutral terminal
block.
Unit ventilator controls and control
wiring can be factory mounted or field
installed.
Operational controls and an electric
heating safety device are factory
mounted. The safety device is a high
temp cut-out which de-energizes elec-
tric heating elements through the K1
safety contactor.
Wiring diagrams illustrate the stan-
dard unit motors with one and two
speed control. Terminal wiring is pro-
vided by Trane and the actual compo-
nents used for a particular installation
may differ. Control and line diagrams
for the exact control system used are
provided with each unit.
Electric heat coils provide a third way
to supply heating to the direct expan-
sion cooling. The coil utilizes three to
six preheat elements which are factory
wired.
22
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Installation
!
WARNING
Hazardous Voltage!
IMPORTANT:
Disconnect all electric power, in-
cluding remote disconnects be-
fore servicing. Follow proper
lockout/tagout procedures to en-
sure the power can not be inad-
vertently energized. Failure to
disconnect power before servic-
ing could result in death or seri-
ous injury.
INSTALLER MUST MOUNTTHERMAL
EXPANSION VALVE BULB AND FROST
PROTECTION BULB (if suppled)TO
SUCTION LINE AFTER CONNECTION
OF FIELD REFRIGERANT PIPING
X39001939010A
Wiring (continued)
X
12
DX System
A typical unit ventilator with DX coil in-
cludes an outside air thermostat, a
frost prevention thermostat and a 24V
transformer for condensing unit con-
trol.
9
3
3:00
4:00
9:00
8:00
6
X
RECOMMENDED
BULB PLACEMENT
MOUNT BULB IN
HORIZONTAL PLANE
Wire sizing is the same as given for the
thermostat wiring in the condensing
unit installation instructions, or may
be obtained from the nameplate. The
condensing unit must be controlled by
the same room thermostat that also
controls the unit ventilator.
Figure 15: Frost stat/TXV valve
installation tag
Note: Depending on the controls pack-
age ordered with the unit, not all in-
stallations will require mounting the
frost stat bulb.
Split System Start-Up
After all piping and wiring has been
completed, follow the instructions
provided with the condensing unit for
control testing and system start-up. If
sweat type field-piped systems are be-
ing used, then pressure testing, evacu-
ation and refrigerant charging will be
required.
Two bulbs will also be shipped with a
split system unit:
•
•
Frost stat bulb
TXV valve (used with R410a).
Both components are to be field in-
stalled using the installation kit
shipped with the unit. For complete in-
stallation instructions and locations,
refer to the tag attached to the installa-
tion kit within the unit. See Figure 15
for an example of the installation tag.
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Electrical
Requirements
Table E1: VUV 075-150, Electrical Performance
Blower
Motor
FLA (ea)
3.0
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
3.0
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Blower
Motor
HP
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
Number of
Electric
Heat
kW
Electric
Heat
Amps
0.00
Minimum
Circuit
Ampacity
3.8
Overcurrent
Protective
Device
15
Unit
No. of
Heating
Total
FLA
Model No.
Voltage
Fan Motor
Elements
VUVE075
115/60/1
208/60/1
208/60/1
208/60/1
208/60/1
208/60/3
208/60/3
208/60/3
208/60/3
230/60/1
230/60/1
230/60/1
230/60/1
230/60/3
230/60/3
230/60/3
230/60/3
265/60/1
265/60/1
265/60/1
265/60/1
460/60/3
460/60/3
460/60/3
460/60/3
115/60/1
208/60/1
208/60/1
208/60/1
208/60/1
208/60/3
208/60/3
208/60/3
208/60/3
230/60/1
230/60/1
230/60/1
230/60/1
230/60/3
230/60/3
230/60/3
230/60/3
265/60/1
265/60/1
265/60/1
265/60/1
460/60/3
460/60/3
460/60/3
460/60/3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0.00
0.00
4.39
5.86
8.79
0.00
4.39
5.86
8.79
0.00
5.85
7.80
11.70
0.00
5.85
7.80
11.70
0.00
5.82
7.80
11.70
0.00
5.85
7.80
11.70
0.00
0.00
5.86
7.81
11.72
0.00
5.86
7.81
11.72
0.00
7.80
10.40
15.60
0.00
7.80
10.40
15.60
0.00
7.80
10.40
15.60
0.00
7.80
10.40
15.60
3.00
0.00
1.60
2.0
15
21.10
28.20
42.30
0.00
22.70
29.80
43.90
1.60
28.4
37.3
54.9
2.0
30
40
60
15
12.20
18.69
24.40
0.00
13.80
20.29
26.00
1.60
17.3
25.4
32.5
2.0
20
30
35
15
24.40
32.50
48.80
0.00
26.00
34.10
50.40
1.60
32.5
42.6
63.0
2.0
35
45
70
15
14.10
21.49
28.10
0.00
15.70
23.09
29.70
1.00
19.6
28.9
37.1
1.3
20
30
40
15
21.00
28.20
42.20
0.00
22.00
29.20
43.20
1.00
27.5
36.5
54.0
1.3
30
40
60
15
7.00
8.00
10.0
18.9
18.9
3.8
15
14.10
14.10
0.00
15.10
15.10
3.00
20
20
VUVE100
15
0.00
1.60
2.0
15
28.20
37.50
56.30
0.00
29.80
39.10
57.90
1.60
37.3
48.9
72.4
2.0
40
50
80
15
16.30
24.79
32.50
0.00
17.90
26.39
34.10
1.60
22.4
33.0
42.6
2.0
25
35
45
15
32.50
43.30
65.00
0.00
34.10
44.90
66.60
1.60
42.6
56.1
83.3
2.0
45
60
90
15
18.80
28.66
37.50
0.00
20.40
30.26
39.10
1.00
25.5
37.8
48.9
1.3
30
40
50
15
28.20
37.50
56.30
0.00
29.20
38.50
57.30
1.00
36.5
48.1
71.6
1.3
40
50
80
15
9.40
10.40
19.80
19.80
13.0
24.80
24.8
15
18.80
18.80
25
25
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Electrical
Requirements
Table E1: VUV 075-150, Electrical Performance (continued)
Blower
Motor
FLA (ea)
2.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
2.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
Blower
Motor
HP
Number of
Electric
Heat
kW
Electric
Heat
Amps
0.00
Minimum
Circuit
Ampacity
4.5
Overcurrent
Protective
Device
15
Unit
No. of
Heating
Total
FLA
Model No.
Voltage
Fan Motor
Elements
VUVE125
115/60/1
208/60/1
208/60/1
208/60/1
208/60/1
208/60/3
208/60/3
208/60/3
208/60/3
230/60/1
230/60/1
230/60/1
230/60/1
230/60/3
230/60/3
230/60/3
230/60/3
265/60/1
265/60/1
265/60/1
265/60/1
460/60/3
460/60/3
460/60/3
460/60/3
115/60/1
208/60/1
208/60/1
208/60/1
208/60/1
208/60/3
208/60/3
208/60/3
208/60/3
230/60/1
230/60/1
230/60/1
230/60/1
230/60/3
230/60/3
230/60/3
230/60/3
265/60/1
265/60/1
265/60/1
265/60/1
460/60/3
460/60/3
460/60/3
460/60/3
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
1/10
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
0
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0
3
4
6
0.00
4.00
0.00
0.00
2.00
2.3
15
7.32
35.20
46.90
70.40
0.00
37.20
48.90
72.40
2.00
46.3
60.9
90.3
2.3
50
9.76
70
14.65
0.00
100
15
7.32
20.30
31.03
40.70
0.00
22.30
33.03
42.70
2.00
27.6
41.0
53.1
2.3
30
9.76
45
14.65
0.00
60
15
9.75
40.60
54.20
81.30
0.00
42.60
56.20
83.30
2.00
53.0
70.0
103.9
2.3
60
13.00
19.50
0.00
80
110
15
9.75
23.50
35.82
46.90
0.00
25.50
37.82
48.90
1.80
31.9
47.0
60.9
2.0
35
13.00
19.50
0.00
50
70
15
9.75
35.20
46.90
70.40
0.00
37.00
48.70
72.20
1.80
46.0
60.7
90.0
2.0
50
13.00
19.50
0.00
70
100
15
9.75
11.70
23.50
23.50
0.00
13.50
25.30
25.30
4.00
16.6
31.40
31.4
4.5
20
13.00
19.50
0.00
35
35
VUVE150
15
0.00
0.00
2.00
2.3
15
8.56
41.20
54.90
82.40
0.00
43.20
56.90
84.40
2.00
53.8
70.9
105.3
2.3
60
11.42
17.13
0.00
80
110
15
8.56
23.80
36.36
47.50
0.00
25.80
38.36
49.50
2.00
32.0
47.7
61.6
2.3
35
11.42
17.13
0.00
50
70
15
11.40
15.20
22.80
0.00
47.50
63.30
95.00
0.00
49.50
65.30
97.00
2.00
61.9
81.4
121.0
2.3
70
90
125
15
11.40
15.20
22.80
0.00
27.40
41.87
54.80
0.00
29.40
43.87
56.80
1.80
36.5
54.6
70.8
2.0
40
60
80
15
11.40
15.20
22.80
0.00
41.20
54.90
82.30
0.00
43.00
56.70
84.10
1.80
53.5
70.7
104.9
2.0
60
80
110
15
11.40
15.20
22.80
13.70
27.40
27.40
15.50
29.20
29.20
19.1
36.30
36.3
20
40
40
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Pre-Start
Checklist
Pre-Start-up Checklist
Before energizing the unit, the following system devices must be checked:
____ Is the high voltage power supply correct and in accordance with the nameplate ratings?
____ Is the field wiring and circuit protection the correct size?
____ Is the low voltage control circuit wiring correct per the unit wiring diagram?
____ Is the piping system clean/complete and correct?
____ Is unit serviceable? (See clearance specifications on page 7).
____ Are all the unit access panels secure and in place?
____ Is the water flow established and circulating through all the units?
____ Is the condensate line properly sized, run, trapped and pitched?
____ Does the indoor blower turn freely without rubbing?
____ Has all work been done in accordance with applicable local and national codes?
____ Has heat transfer fluid been added in the proper mix to prevent freezing if required?
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Maintenance
Periodic Maintenance
Cleaning of the Drain Pan
!
WARNING
The following maintenance sugges-
tions apply to all types of unit ventila-
tors, chilled water, hot water, split
systems and electric. Additional infor-
mation for controls not supplied by
The Trane Company should be ob-
tained from the controls manufactur-
er.
The unit ventilators drain pan is re-
movable for periodic cleaning or easy
access for maintenance/drainage is-
sues. Use Figure 16, and the steps be-
low for removing the drain pan.
Hazardous Service
Procedures!
The maintenance and trouble-
shooting procedures recommend-
ed in this section of the manual
could result in exposure to electri-
cal, mechanical or other potential
safety hazards. Always refer to
the safety warnings provided
throughout this manual concern-
ing these procedures. When possi-
ble, disconnect all electrical
1
2
Turn off power to the unit and re-
move the front panel.
Split system unit ventilators include a
condensing unit and the instructions
provided with the condensing unit will
apply to the entire refrigerant system.
Disconnect the condensate drain
line from the P-trap.
3
4
Disconnect fan plug.
Filters
power including remote discon-
nects before servicing. Follow
proper lockout/tagout procedures
to ensure the power can not be in-
advertently energized. When nec-
essary to work with live electrical
components, have a qualified li-
censed electrician or other indi-
vidual who has been trained in
handling live electrical compo-
nents perform these tasks. Failure
to follow all of the recommended
safety warnings provided, could
result in death or serious injury.
Remove (4) pan clips located at
each end of the pan’s front.
The air filters supplied with Trane UV’s
are specially designed for high lint
content. Depending upon room condi-
tions, these filters will normally need
to be replaced every 4 to 8 weeks. To
assure proper unit operation, inspect
the filters monthly and clean or re-
place as required.
5
6
7
Slide out fan board.
Remove drain pan for cleaning.
When reinstalling, reverse se-
quence.
Overloaded filters will reduce unit air
handling capacity, which may result in
insufficient heating during the morn-
ing warm-up period and loss of natural
cooling capacity during mild weather.
Filter Replacement
Slide out fanboard
Service Access
The air filter on the vertical unit is lo-
cated near the bottom of the unit Filter
sizing may be found on Table G1.
.
To access the unit for water balancing,
motor access or other start-up and
maintenance functions, use one of the
following methods:
3
4
1
2
1
2
3
To remove the filters, take-off the
air section’s front panel.
1
2
3
Remove the end pocket front
panel.
Slide the filter out of the filter rack
on the bottom of the unit.
Remove the return air grille by re-
leasing the mounting screws.
Figure 16: Removal of drainpan
Replace old filter with new filter
and re-attach front panel.
If there is no shelving or other ob-
structions, removing the end panel
may allow more access.
CAUTION
Equipment Damage!
Do not operate unit without filters
or grilles in place. Failure to do so
may cause equipment failure
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Maintenance
11 Attach new motor to fan shaft
and reverse steps to complete in-
stallation.
CAUTION
!
WARNING
Equipment Damage!
Support the fanboard to prevent
the deck from sliding too far for-
ward and falling out of the unit.
Failure to do so may cause equip-
ment damage.
Hazardous Service
Procedures!
The maintenance and trouble-
shooting procedures recommend-
ed in this section of the manual
could result in exposure to electri-
cal, mechanical or other potential
safety hazards. Always refer to
the safety warnings provided
throughout this manual concern-
ing these procedures. When possi-
ble, disconnect all electrical
5
When reinstalling, use the same
steps in reverse order.
Motor
The fan motor is a permanent split ca-
pacitor type motor with voltage specif-
ic power. See Table E1 through E3 for
electrical performance and motor volt-
age.
power including remote discon-
nects before servicing. Follow
proper lockout/tagout procedures
to ensure the power can not be in-
advertently energized. When nec-
essary to work with live electrical
components, have a qualified li-
censed electrician or other indi-
vidual who has been trained in
handling live electrical compo-
nents perform these tasks. Failure
to follow all of the recommended
safety warnings provided, could
result in death or serious injury.
Table E3: Motor Voltage
Unit Voltage
115-60-1
208-60-1
230-60-1
208-60-3
460-60-3
265-60-1
230-60-3
Motor Voltage
115-60-1
Figure 17: Fan board removal for fan/
motor access
208/230-60-1
208/230-60-1
208/230-60-1
265-60-1
265-60-1
208/230-60-1
Access to Fanboard & Motor
If a replacement motor is required, it
should be ordered from The Trane
Company. To replace the fan motor,
complete the following steps:
The unit ventilator fan board can be re-
moved for service to the blower motor
and fan wheels. The fan board must
also be removed for easier access to
the unit coils for cleaning and mainte-
nance. Utilize the following steps for
proper removal of the fanboard.
Figure 18: Loosen screws
6
7
8
9
Complete steps for removal of
fan board.
Disconnect the motor ground
wire.
1
Turn off power to the unit and re-
move the front panel.
Using a 7/16” Allen wrench, loos-
en the coupling on the fan shaft.
2
3
4
Disconnect P-trap from drain pan.
Disconnect fan plug.
Loosen the screw on the motor
clamp until it allow the motor to
be lifted off the base, Figure 18.
Figure 19: Lift/pull motor forward
Slide fan board by pulling deck
forward, Figure 17.
10 Lift the motor and pull forward
until fan shaft separates from the
motor, Figure 19.
28
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Maintenance
Note: These hydronic valves are de-
signed and tested for silent operation.
However, water noise may occur as a
result of high water velocity. Piping
noises may also occur in high temper-
ature (over 212° F) systems with insuf-
ficient water pressure.
!
WARNING
Hazardous Service
Procedures!
The maintenance and trouble-
shooting procedures recommend-
ed in this section of the manual
could result in exposure to electri-
cal, mechanical or other potential
safety hazards. Always refer to
the safety warnings provided
throughout this manual concern-
ing these procedures. When possi-
ble, disconnect all electrical
Note: Do not use petroleum-based or
mineral oil type boiler additives. Com-
pounds with a 50% water dilution that
can be used are diethylene glycol,
etheylene glycol and propylene glycol.
Coil Cleaning
Periodically the hydronic coils should
be cleaned from dirt accumulation that
could reduce the unit performance. To
clean the equipment coil:
power including remote discon-
nects before servicing. Follow
proper lockout/tagout procedures
to ensure the power can not be in-
advertently energized. When nec-
essary to work with live electrical
components, have a qualified li-
censed electrician or other indi-
vidual who has been trained in
handling live electrical compo-
nents perform these tasks. Failure
to follow all of the recommended
safety warnings provided, could
result in death or serious injury.
1
2
3
Remove the unit’s front panel.
Remove the unit’s front nosing.
Removed the coil’s solid steel
front cover.
4
5
Vacuum the dust/particles from
the coil face.
Reverse order for re-installation.
Modulating Valves
The valve should be serviced by a
trained, experienced technician. For
detailed installation and removal
steps, refer to Pages 18-20 in this man-
ual.
Preventive Maintenance
A comprehensive preventive mainte-
nance program should be established
for a unit ventilator system. The fol-
lowing are several key elements:
For general servicing or malfunction,
follow one of the appropriate steps:
•
Inspect the filters monthly. Follow
the Filter Replacement instruc-
tions.
1
2
3
If the valve is leaking, drain system
OR isolate valve from the system.
DO NOT remove valve body from
plumbing.
•
•
Inspect and clean the drain pan
every three months.
Ensure the cartridge needs to be
replaced. If so, follow appropriate
steps explained for cartridge as-
sembly removal.
Check the coils for ‘‘dirt’’ accumu-
lation every three to six months.
Clean the coils at least once each
year.
If the motor or other internal parts
of the actuator is damaged, replace
the entire actuator assembly.
•
Inspect the unit ventilator insula-
tion every three months; thor-
oughly clean as needed.
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Warranty
Information
Warranty Information
Standard Warranty
The standard unit ventilator warranty is Trane’s parts-only warranty, running 12-months from startup, not to
exceed 18-months from shipment.
Extended Warranty
The optional extended warranty is a second through fifth year warranty. The time starts at the end of standard
1-year coverage through the fifth year.
These extended warranties apply only to new equipment installed in domestic Trane Commercial Systems
Group sales territories and must be ordered prior to start-up.
30
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Trouble Shooting
Checklist
!
WARNING
Hazardous Service Procedures!
The maintenance and trouble shooting procedures recommended in this section of the manual could result in
exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings pro-
vided throughout this manual concerning these procedures. When possible, disconnect all electrical power
including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power
can not be inadvertently energized. When necessary to work with live electrical components, have a qualified
licensed electrician or other individual who has been trained in handling live electrical components per these
tasks. Failure to follow all of the recommended safety warnings provided, could result in death or serious in-
jury.
If operating difficulties are encountered, refer to page 31 and 32 for probable causes and corrective measures. If suggested
corrective measures have been taken, and the trouble still persists, contact the control supplier or the local Trane Sales Of-
fice.
Problem
Heating Cooling Cause
Correction
X
X
Main power off
Check fuses
Room sensor is not properly set
Reset room sensor temperature
Start the warm-up cycle earlier in the
morning to provide appropriate time-
frame to increase room temperature prior
to space occupation.
Room sensor is providing a false reading due
to walls being cold from the night temperature
setting.
X
X
Room too warm
(outside air temperature is below 35° F)
Sensor is mounted on a block wall that is
leaking cold air into the room through the
mounting holes.
Relocate sensor.
Replace malfunctioning component, or
contact the control’s contractor, or if Trane
controls, see CNT-SVX04A-EN for more
information concerning Tracer™ controls.
Face and bypass damper, or coil valve is
malfunctioning.
X
X
Room sensor is not properly set
Reset room sensor temperature
Replace malfunctioning component, or
contact the control’s contractor, or if Trane
controls, see CNT-SVX04A-EN for more
information concerning Tracer™ controls.
Face and bypass damper or coil control valve
is malfunctioning.
X
Room too warm
(outside air temperature is above 35° F)
Ensure OA damper is in the open
position.
X
X
X
OA damper is in the closed position
Clogged filter
Replace filter
Check flow of hot water through the
control valve.
Control valve is malfunctioning
Check the boiler reset schedule to
determine if the loop temperature can be
decreased.
X
X
Boiler
Room too warm
Steam
Check the operation of the control valves
(outside air temperature is above 35° F)
Unit utilizes Wall Fin auxiliary radiation:
The economics of the unit ventilator
selection dictate that, in most cases, the
unit will be sized to provide adequate
X
Outside air temperature is above 60 to 65° F natural (ventilation) cooling without
outside temperatures up to 60-65 F.
Above this point, a changeover should be
made to the mechanical cooling cycle.
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Trouble Shooting
Checklist
Problem
Heating Cooling Cause
Correction
X
X
Room sensor is not properly set
Clogged filter
Reset room sensor temperature
Replace filter
Replace malfunctioning component, or
contact the control’s contractor, or if Trane
controls, see CNT-SVX04A-EN for more
information concerning Tracer™ controls.
Face and bypass damper, or coil valve is
malfunctioning.
X
Room too cool
Ensure OA damper is in the closed or
minimum outside air position.
X
X
X
OA damper is in the open position
On hot water and steam type units, check
the boiler pressure or temperature to
ensure that the requirements are being
met.
Boiler pressure or temperature design
requirements not being met
Room too cool
Unit utilizes Wall Fin auxiliary radiation:
Check the operation of the wall fin
controls.
Radiation controls malfunctioning
X
X
Room sensor is not properly set
Clogged filter
Reset room sensor temperature
Replace filter
Replace malfunctioning component, or
contact the control’s contractor, or if Trane
controls, see CNT-SVX04A-EN for more
information concerning Tracer™ controls.
Face and bypass damper, or coil valve is
malfunctioning.
X
Room too hot
Ensure OA damper is in the minimum
outside air position.
X
X
OA damper is in the open position
Check the temperature of the water
leaving the chiller to ensure that it meets
design requirements.
Chiller temperature design requirements not
being met
If the motor fails to start, and other motors on Check the unit switch to ensure it is in the
the same circuit are functioning ON position.
X
X
Motor
If the motor fails to start, and other motors on Check for loose switch or motor
the same circuit are functioning connection.
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Unit Wiring
Field Installed Wiring
120V/1 PH - 3-Speed
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Unit Wiring
End Device Controls
120V/1 PH - 3-Speed, DX/Hot Water
34
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Unit Wiring
End Device Package
480V/3 PH - 3-Speed, Chilled Water/Electric Heat (6-Element) -page 1
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Unit Wiring
End Device Package
480V/3 PH - 3-Speed, Chilled Water/Electric Heat (6-Element) -page 2
36
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Unit Wiring
End Device Package
120V/1 PH - 3-Speed, 4-Pipe Hot Water/Chilled Water
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Unit Wiring
Tracer ZN520
120V/1 PH - 3-Speed, 4-Pipe Hot Water/Chilled Water
38
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Literature Order Number
Date
UV-SVN03D-EN
October 2007
Supersedes
UV-SVN03C-EN May 2006
Trane
A business of American Standard Companies
Trane has a policy of continuous product and data improvement and reserves the right to change
design and specifications without notice.
For more information, contact your local district
office or e-mail us at [email protected]
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