Trane HUV and VUV
Classroom Unit Ventilators
Horizontal and Vertical
Classroom Unit Ventilators
UV-PRC001-EN
Introduction
The vertical unit ventilator is a floor mounted air-conditioner. The unit is mounted flush to the wall with the
fresh air opening in the back or top inlet, and the return opening in the front or back. Front panels are retained
by Allen wrench operated tamper proof camlocks which open with a 180-degree rotation. The unit is constructed of 14 and 16-gauge zinc coated steel. Each unit contains two end pockets which are easily accessible and
provide field hook-up to piping and controls. A pipe chase is provided across the back of the unit for field installation of crossover piping. The unit fan board is made of 14-gauge corrosive resistant galvanized metal. All
cooling specified units contain a non-corrosive, positively sloped drain pan that is removable for cleaning purposes. Leveling legs are provided at both ends of the unit to facilitate alignment and leveling. Feature highlights include:
• TracerTM ZN520 controls for
automation of the mechanical
system
• Factory installed piping
• Blow thru supply-air design for
freeze avoidance
• ARI 840 certification for
ventilation control
• Varying coil combinations to fit
a variety of applications
• Maintenance accessibility for
coil fin cleaning
• Factory commissioning of DDC
controls
• ASHRAE Cycle II
• Field reversible drain pan
2
• Quality construction
• Indoor air quality features
UV-PRC001-EN
Contents
Introduction
2
Features and Benefits
Options
4
4
Coil Types
8
Piping and Valves
Controls
15
23
Application Considerations
Selection Procedure
35
45
How to Select
45
49
Glycol Adjustment Factors
Model Number Description
51
General Data
Performance Data
59
67
67
68
74
75
76
77
78
80
81
83
84
Sound Performance Data
A-Coil/D-Coil Data
H-Coil Data
X-Coil Data
DK, R1, R2 Cooling Coil Data
FA, R1, R2 Heating Coil Data
DX Coil Data
Electric Heat Coil Data
K1, K2 Steam Coil Data
DK, FK Steam Coil Data
Electrical Data
Control Wiring
Dimensions and Weights
Accessories
Sensors
Unit Accessories
Mechanical Specifications
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86
97
124
124
126
128
3
Features and
Benefits
Configuration
The classroom unit ventilator is
available in both a
• horizontal (ceiling mount)
• vertical (floor mount)
configuration. The units range
from 750 cfm to 2000 cfm for the
horizontal configuration, and from
750 cfm to 1500 cfm for the vertical
configuration.
Cabinet
The units are constructed of 14and 16-gauge zinc coated steel. All
steel surfaces are cleaned, phosphatized, rinsed and dried before
application of final finish paint.
The paint is applied by an electrostatic powder spray system, minimum thickness of 1.5 mil which
results in an appliance grade finish.
Front Panels
The front panels are retained by
Allen wrench operated tamperproof camlocks which open with a
180-degree rotation. The vertical
front panel is constructed of either
14 or 16 gauge material dependent
upon model option selected. See
Figure 1 for front panel with
camlock access.
End Pockets
The roomy 13 1/2-inch wide x 30inch high x 15 1/4-inch depth end
pockets provide easy field installation of valves, piping, and controls. The units have a large pipe
access opening in both end pockets and large knockouts for piping
and electrical connections. All
electrical connections are made in
the left-hand end pocket, with exception of units equipped with the
electric heating coil option. See
Figure 2 for end pocket sizing.
4
Drain Pan
The drain pan is positively sloped
in all planes to assure proper
drainage and help eliminate the
risk of microbial growth. To help
ensure indoor air quality, the drain
pan is insulated on the bottom to
help prevent condensate formation. The drain pan can be easily
removed for cleaning purposes.
The drain pan is field reversible by
loosening 2-front screws and tilting.
A drain plug is located on each end
of the drain pan for the vertical
configuration. The plug is drilledout during assembly per model
number selection See Figure 2
for drain pan.
Figure 1: Front panel with camlock access
Fanboard
The fanboard assembly is acoustically designed in a single, rigid assembly that includes the fans, fan
housing, bearings, fan shaft and
motor. The fan motor is mounted
on the fanboard. The fanboard is
made from 14 gauge galvanized
steel to resist corrosion and increase strength. The fanboard is
removed by extracting 2-screws.
115V Motor
The motor is a single speed permanent split capacitor with thermal overload protection. A
multiple tap auto-transformer is
wired to the motor to provide different speed settings. The motor
speed is not affected by damper
positions. Standard motors are
rated up to 0.25 ESP. High static
motors are rated from 0.25 ESP to
0.45 ESP.
Motor bearings are permanently
lubricated. Isolation of the motor is
provided internally at the union
shaft. See Figure 3 for motor
disconnect.
Figure 2: Roomy end pocket
and drain pan
Figure 3: Motor disconnect
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Features and
Benefits
Figure 4: Sampling chamber
Sampling Chamber (Option)
A sampling chamber is provided
for housing the room air sensor
whenever a unit mounted sensor
is specified for TUC or Tracer
ZN520 controls. The sampling
chamber is placed below the aircoil where room air is continuously drawn into the chamber before
being tempered by the coil. This
ensures an accurate response to
temperature changes in the room.
See Figure 4 for sampling
chamber.
Filter
Standard units are equipped with
a single 1-inch thick filter that is accessible without removal of the
unit front panel. Units containing
dynamic air require front panel removal for filter access. See Figure
5 for vertical filter removal. Filter options include throw-away
and permanent renewable.
Figure 5: Vertical filter removal
Figure 6: OA/RA splitter
and seal
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OA/RA Dampers
Trane unit ventilators are
equipped with dual blade type
mixing dampers to ensure proper
modulation and mixing of return
and outdoor air designed in accordance to ARI 840. A splitter is
placed between the damper
blades to separate the fresh-air
and return-air compartments to
prevent blow-thru.
An ultra low-leak damper seal is
applied on all vertical unit configurations. The seal consist of a medium density, closed-cell neoprene
material. The seal is fixed and not
part of the damper assembly. The
outside-air damper closes into the
closed cell neoprene material,
providing a positive pressure seal.
See Figure 6 for OA/RA damper with splitter and seal.
OA/RA Actuator
(Option)
The OA/RA actuator provides true
spring return operation for positive close-off of the OA/RA dampers. The spring return system of
the actuator closes the outside
damper if power is lost to the
building. When ordered with factory mounted controls, the actuator is 3-point floating. A 2 to 10
VDC actuator is also available
when other than Trane controls is
required. Table 1 for technical
data of the OA/RA actuator.
See Page 7 for percentage of ventilation on each system.
Table 1: Technical data for OA/RA
actuator
Power Supply 24 VAC
24 VAC
± 20%
± 10%
50/60 HZ
Power
Consumption
Running: 2.5 W
Holding: 1 W
Tranformer
Sizing
5 VA (class 2-power source)
Overload
Protection
Electronic throughout 0 to
95-degree rotation
Control Signal 2 to 10 VDC
3-point floating with Trane controls
Angle of
Rotation
Maximum 95-degree
Adjustable with mechanical stop
Torque
35-inch/lb
Direction of
Rotation
Spring return reversible with CW/
CCW mounting
Position
Indication
Visual indicator, 0 to 95-degrees
Run Time
(nominal)
90-second constant (independent
of load)
Noise Level
Running: 30 dB
5
Features and
Benefits
Figure 7: Horizontal with face
and bypass
The actuator is provided with electronic protection against overload.
It does not contain, nor require a
limit switch. When reaching the
damper end position, the actuator
automatically stops. The gears can
be manually disengaged with a
button on the actuator housing.
See Table 2 for technical data
of the face and bypass actuator.
Face and Bypass
(Option)
The face and bypass option consist of an actuator, damper blade
and 2-position water valve (option).
During face and bypass mode, the
damper swings to an upward position, closing off any air travel
through the coil. The damper
blade is tightly sealed to eliminate
heat pickup while in the bypass
mode.
Figure 8: Actuator mounting
locations (vertical)
Figure 9: Actuator mounting
locations (horizontal)
6
A two-position valve control option further enhances this system
by closing off all water flow to the
coil during the bypass position.
This provides a cost savings during the bypass operation for both
2-pipe and 4-pipe hydronic systems. 2-pipe main steam systems
also utilize the face and bypass option with an isolation valve. By utilizing the face and bypass option,
variable pumping is made possible. See Figure 7 for horizontal
unit with face and bypass.
Table 2: Technical data for face &
bypass actuator
Power Supply
± 20%
24 VAC ± 10%
24 VAC
50/60 HZ
Power
Consumption
2W
Tranformer
Sizing
3 VA (class 2-power source)
Angle of
Rotation
Maximum 95-degree
Adjustable with mechanical stop
Torque
35-inch/lb
Direction of
Rotation
Reversible with switch L/R
Position
Indication
Clip-on indicator
Run Time
(nominal)
90-second constant
Manual
Override
External push button
Noise Level
Less than 35 dB
Control Signal 3-point floating
Face and Bypass Actuator
(option)
The face and bypass damper actuator incorporates a direct couple
design for both the horizontal and
the vertical configurations. See
Figures 8 and 9 for mounting
locations of the actuator.
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Features and
Benefits
Blow-thru Design
A blow-thru unit ventilator design
places the blowers below the coil
to aid in the elimination of debris
(coins, paper clips, etc.) from falling into the spinning fan. This
safety consideration helps prevent
personal injury, noise or equipment damage.
away from the cold outside air
stream, and also mixes this cold
air with return air to provide a uniform coil inlet temperature. An additional benefit in freeze
avoidance is the heat of the fan,
motor, and return air are mixed
into the air stream before entering
the coil, instead of after the coil.
Another key advantage in the
blow-thru design is the protection
against coil freezing. The blowthru design keeps the coil farther
This blow-thru design also acts as
a noise attenuator. The coil placement near the discharge air allows
fan noise absorption which restricts sound from the unit’s fan to
Trane - Blow-thru Design
pass freely into the conditioned
space.
Draw-thru Design
A typical draw-thru design allows
little mixing of the return and outside-air stream while locating the
coil very close to the outside air inlet. This process creates cold spots
on the coil that could lead to coil
freeze-up. See Table 3 for
mixed-air temperature at various outside-air conditions.
Competition - Draw-thru Design
Table 3: Mixed-air temperature at various outside air (OA) conditions
Outside Air
Temperature
-10 Degree
0 Degree
10 Degree
20 Degree
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16-2/3
56.80
58.50
60.10
61.90
20
54.00
56.00
58.00
60.00
Percent Outside Air
25
50.00
52.50
55.00
57.60
33-1/2
43.40
46.80
50.00
53.40
50
30.00
35.00
40.00
45.00
7
Coils
Varying Coil Combinations
By varying coil combinations,
room conditions can be met using
almost any cooling or heating
source. If room requirements
change, a higher capacity coil can
be interchanged without replacing
the installed unit.
All 2-pipe and 4-piping cooling coil
assemblies come complete with a
deep insulated drain pan. A drain
pan is not provided for a heating
only system for units not containing the face and bypass option.
See Table 4 for coil types.
In a 4-pipe or couple coil situation,
main implys COOLING. Therefore,
the main coil will contain cooling,
and the auxiliary coil will contain
heating. All main coils have oppo-
site supply/return end connections
from the auxiliary coil.
In a 2-pipe coil situation, the main
coil may be either heating or cooling.
A manual air-vent is provided on
all hydronic coils. The vent allows
air to be purged from the coil during start-up, or maintenance. The
air vent is located on the return
header of all hydronic coil systems.
Similarly, a drain plug is located at
the bottom of the MAIN coil return
header. See Figure 10 for typical header assembly.
Table 4: Coil Types
Single Coil Module
AA, AB, AC, AD, AE
Combination hot water/cold water coil
H1, H2, H3, H4, H5, H6
Hot water ONLY coil
K1, K2
Steam ONLY coil
E4, E6, E7, E9
Electric heat ONLY coil
F0
Refrigeration ONLY coil
8
Air Vent
Drain
Plug
Figure 10: Typical header
assembly
Coupled Coil Module
Main/Auxiliary Coils are
opposite End Connections
DA, DC, DD, DE
Cold water/preheat hot water coil
DK
Cold water/preheat steam coil
X3, X4, X6
Cold water/preheat electric heat coil
FA
Refrigeration/preheat hot water coil
FK
Refrigeration/preheat steam coil
F3, F4, F6
Refrigeration/preheat electric heat coil
R1, R2
Cold water/reheat hot water coil
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Hydronic Main Coils
Hydronic Main Coils
All hydronic coils are wavy plate
finned and available in varied capacities (Table 5 and 6 listed below). The coils are hydrostatically
tested at 350 PSI.
Piping packages for the main coil
assembly are always supplied as a
3/4-inch package. See Figure 11
for main coil header sizing for
2-pipe and 4-pipe systems.
Left hand configuration
shown.
Figure 11: Main coil header sizing for 2pipe and 4-pipe systems. (Left
hand configuration shown.)
Indicates air flow
Table 6: Coupled coil (4-pipe) data
Coil
Coil Unit Fins per Rows
Rows
Face
Description Type Size inch FPI Cooling Heating
&
(main)
(main) Bypass
Coil
Description
12
2
2
16
2
2
AC
12
3
3
AD
12
4
4
AE
16
4
4
12
0
1
14
0
1
16
0
1
H4
12
0
2
H5
14
0
2
H6
16
0
2
AB
H1
HW ONLY
Main
Coil
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H2
H3
075-200
AA
HW/CW
Main
Changeover
Coil
075-200
Table 5: Single coil (2-pipe) data
H&V
H&V
CW-Main
HW-Preheat
Auxiliary
Coil
CW-Main
E-Heat-Aux.
Coil
Coil
Type
Unit
Size
Fins per Rows
inch FPI Cooling
(main)
DA
12
2
DC
16
2
12
3
16
3
075-100
12
3
125
16
2
150
12
3
200
16
3
DD
075-200
DE
X3-X6
CW-Main
Steam-Aux.
Coil
DK
075-150
12
3
DK
200
12
3
CW-Main
HW (reheat)Aux. Coil
R1
075-200
12
3
R2
075-200
16
3
Face
&
Bypass
H&V
Not
Available
Not
Available
Not
Available
9
Hydronic Auxiliary Coils
Hydronic Auxiliary Coils
All hydronic coils are wavy plate
finned and available in varied capacities (Table 7 and 8 listed below). The coils are hydrostatically
tested at 350 PSI.
A manual air vent is installed on
the return header. All auxiliary
coils have opposite end supply/return connections from the main
coil.
Figure 12: Auxiliary PREHEAT coil header sizing for 4-pipe
systems. (Right hand configuration shown.)
See Figure 12 for auxiliary
PREHEAT coil header sizing,
and Figure 13 for auxiliary REHEAT coil header sizing.
Indicates air flow
Figure 13: Auxiliary REHEAT coil header sizing for 2-pipe
and 4-pipe systems. Right hand configuration
shown.
Table 8: Auxiliary reheat coil data
Table 7: Auxiliary preheat coil data
Coil
Coil
Description Type
CW-Main
HW-Preheat
Aux. Coil
HW ONLY
Main
Coil
10
Unit
Size
Fins per
Rows
inch FPI Heating
(Aux.)
DA
12
DC
16
DD
075-200
DE
12
Face
&
Bypass
1
H&V
1
Not
Available
Coil
Description
Coil
Type
Unit
Size
Fins per Rows
inch FPI Heating
(Aux.)
CW-Main
HW (reheat)Aux. Coil
R1
075-200
12
1
R2
075-200
16
1
Face
&
Bypass
Horiz
ONLY
16
12
075-150
FA
200
14
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Steam Main Coils
Steam Main Coils
(K1 and K2 coils)
The steam heating coil is a 1-row
design, tube-in-tube distributing
coil. Supply and return connections are on the same side, and are
terminated with a 1-inch female
pipe connection.
For steam only coils, K1 and K2,
Trane provides a face and bypass
damper selection. When factory
mounted Trane controls are selected, an optional 2-position isolation valve may be used to close
off flow to the steam coil when the
damper is in the full bypass position.
Figure 14: Main coil header sizing for 2pipe and 4-pipe systems. (Right
hand configuration shown.)
For field installed controls, Trane
provides a face and bypass damper ONLY. See Figure 14 for main
coil header sizing for 2-pipe
and 4-pipe systems. Right
hand configuration shown.
Indicates air flow
Table 9: Single coil (2-pipe) data
Coil
Description
Steam onlyMain Coil
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Coil
Type
Unit
Size
Fins per
Rows
inch FPI Heating
(main)
K1
075-150
8
1
K2
075,125
10
1
K2
100
13
1
K2
150-200
14
1
Face
&
Bypass
H&V
11
Steam Auxiliary Coils
Steam Auxiliary Coils
(DK and FK)
The steam auxiliary heating coil is
a 1-row design, tube-in-tube distributing coil. Supply and return
connections are on the opposite
end from the main coil. The connections are terminated with a 1inch female pipe connection.
The modulating piping valve (option) is shipped loose and field installed.
Face and bypass in not available
when ordering a auxiliary steam
coil option because of physical
size requirements. See Figure 15
for auxiliary steam coil header
sizing.
Figure 15: Auxiliary steam coil header sizing. (Right
hand configuration shown.)
Indicates air flow
Table 10: Auxiliary steam coil data
Coil
Coil
Description Type
CW-Main
Steam
(preheat)
Aux. Coil
DX-Main
Steam
(preheat)
Aux. Coil
12
DK
Unit
Size
Fins per
Rows
inch FPI Heating
(Aux.)
075,125
11
100
12
150-200
14
1
Face
&
Bypass
Not
Available
11
075,125
FK
100
12
150-200
14
1
Not
Available
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Electric Heat Coils
Figure 16: Main coil element location. (Right hand
configuration shown.)
Electric Coils
Electric preheat coils consist of
special resistance elements inserted in the coils fin surface for maximum element life, heat transfer
and safety. Units include a high
temperature cut-out with a continuous sensing element. This device
interrupts electrical power whenever excessive temperatures are
sensed along the leaving air side
of the coil. Electric heat units include a panel interlock switch to
disconnect power to the heating
element when the access panel is
opened. Power connection for
electric heat is made in the right
hand end pocket.
Note: A circuit breaker is also
available through model number
selection.
Note: Face and bypass is not available when ordering the electric
heat option. Coil options: X3, X4,
X6, F3, F4, F6, E-4, E6, E7, E9.
Figure 17: Auxiliary coil element location. (Left hand
configuration shown.)
See Figure 16 for main coil element location, and Figure 17
for auxiliary coil element location.
Indicates air flow
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13
Direct Expansion Main Coils
Direct Expansion Main Coils
All refrigerant coils (Table 11 and
12) include a factory mounted
thermal expansion valve and
equalizing tube. The direct expansion (DX) configuration is available in a left hand cooling
configuration ONLY.
Trane also provides a 50 VA transformer, time delay relay, a frost
detection sensor, and a selectable
outside air sensor on all DX unit
configurations. See Figure 18
for main coil header sizing.
Figure 18: Main DX coil header sizing. (Only available with left
hand configuration)
Indicates air flow
Table 11: Single coil (4-pipe) data
Coil
Coil
Description Type
DX-Main
E-heat
(preheat)
Aux. Coil
Unit
Size
075-150
Table 12: Single coil (4-pipe) data
Fins per
Rows
inch FPI Cooling
(Main)
12
F3-F6
1
200
Face
&
Bypass
14
Not
Available
Coil
Coil
Description Type
DX-Main
Coil
DX-Main
HW
(preheat)
Aux. Coil
FO
Unit
Size
Fins per Rows
inch FPI Cooling
(Main)
075-150
12
200
14
2
Face
&
Bypass
Not
Available
12
075-150
FA
200
14
2
Not
Available
Thermal Expansion Valve
All refrigeration coils (F0, FA, F3-F6) come with a thermal expansion
valve flow metering device. This thermal expansion valve (TXV) precisely meters refrigerant flow through the coil and allows the unit to operate
at an entering air temperature from 40 F to 90 F.
Unlike cap-tube assemblies, the expansion valve device allows the exact
amount of refrigerant required to meet the coil load demands. This precise metering by the TXV increases the efficiency of the unit. See Figure
19 for expansion valve.
Figure 19: Expansion valve
14
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Piping
Coil Valve Control
Coil Control Valve
Chilled water, hot water and steam coils accommodate control valves when selecting options
8,9,G,H,Q,R,T,U,V,W and Z for DIGITS 16 and 17. The control valves are available as a three-point modulating arrangement. The control valve option includes the following:
Threaded connections on both the 2-way and 3-way configurations;
1/2-and 3/4-inch nominal sizing for both the 2-way and 3-way configurations;
Valve motor leads to include an 18-gauge wire, 6-inches in length, with internal strain relief;
2 1/2-inch clearance above cover required for cover removal
Table 13: Control valve pressure drop
2-Way or 3-Way
Water Valves
2
GPM
3
GPM
4
GPM
5
GPM
6
GPM
7
GPM
1/2" - 1.8 Cv
2.85
(ft)
6.42
(ft)
11.41
(ft)
17.82
(ft)
25.67
(ft)
34.94
(ft)
2.73
(ft)
3.93
(ft)
5.35
(ft)
1/2" - 4.6 Cv
8
GPM
9
GPM
10
GPM
11
GPM
12
GPM
13
GPM
14
GPM
15
GPM
16
GPM
6.99
(ft)
8.84
(ft)
10.92
(ft)
13.21
(ft)
15.72
(ft)
18.45
(ft)
21.4
(ft)
24.56
(ft)
27.95
(ft)
3.51
(ft)
4.33
(ft)
5.25
(ft)
6.24
(ft)
7.33
(ft)
8.50
(ft)
9.75
(ft)
11.10
(ft)
3/4" - 7.3 Cv
17
GPM
18
GPM
19
GPM
20
GPM
12.53
(ft)
14.04
(ft)
15.65 17.34
(ft)
(ft)
2-Way Control Valve (3-Point Modulating)
1/2-inch FNPT; 1.8, 4.6 Cv (Digit 16 = 8,9,W,G and 17 = W,G)
Actuator
Valve Body
Control
3-Point Modulating
Connections
1/2-inch threaded
Electrical
24 VAC, 60 HZ
Static Pressure
400 PSI
Stroke
110 seconds
Ambient
140 F at 95% relative
humidity
Close-off
Pressure
1.8 Cv = 80 psig
4.6 Cv = 45 psig
Temperature
Water 200 F Max.
2-Way Control Valve (3-Point Modulating)
3/4-inch FNPT; 7.3 Cv (Digit 16/17 = H)
Actuator
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Valve Body
Control
3-Point Modulating
Connections
3/4-inch threaded
Electrical
24 VAC, 60 HZ
Static Pressure
400 PSI
Stroke
50 seconds
140 F at 95% relative
humidity
Close-off
Pressure
75 psig
Ambient
Temperature
Water 200 F Max.
15
Piping
Coil Valve Control
3-Way Control Valve (3-Point Modulating)
1/2-inch FNPT; 1.8, 4.6 Cv (Digit 16 = Q,X,Y,Z and 17 = Q,Z)
Actuator
Valve Body
Control
3-Point Modulating
Connections
1/2-inch threaded
Electrical
24 VAC, 60 HZ
Static Pressure
400 PSI
Stroke
110 seconds
Ambient
140 F at 95% relative
humidity
Close-off
Pressure
1.8 Cv = 80 psig
4.6 Cv = 45 psig
Temperature
Water 195 F Max.
3-Way Control Valve (3-Point Modulating)
3/4-inch FNPT; 7.3 Cv (Digit 16/17 = R)
Actuator
Valve Body
Control
3-Point Modulating
Connections
3/4-inch threaded
Electrical
24 VAC, 60 HZ
Static Pressure
400 PSI
Stroke
50 seconds
75 psig
Ambient
140 F at 95% relative
humidity
Close-off
Pressure
Temperature
Water 195 F Max.
2-Way Control Valve (3-Point Modulating)
1/2 and 3/4-inch FNPT; 1.8, 4.6 and 7.3 Cv (Digit 16 = T,U,V)
Actuator
Control
3-Point Modulating
Electrical
24 VAC, 60 HZ
Stroke
Ambient
Valve Body
Connections
1/2 or 3/4-inch
threaded
95 seconds
Static Pressure
400 PSI
140 F at 95% relative
humidity
Close-off
Pressure
1.8 Cv = 345 psig
4.6 Cv = 216 psig
7.3 Cv = 138 psig
Note: Allow 2-1/2-inch above the steam valve for removal of the valve cover
16
UV-PRC001-EN
Piping
Coil Valve Control
Face and Bypass Coil Isolation Valve
Classroom unit ventilators that incorporate the face and bypass option
with a coil isolation valve (options 3 and 7) for DIGIT 16, are outfitted
with a 2-position isolation control valve.
The operation of the powered motor drives the gear assembly, and pushes down on the valve stem against the force of the valve return spring.
When power is removed from the motor, the valve retracts and allows
the valve spring to move the valve stem up in the direction of its normal
position.
Figure 20: Face and bypass
coil isolation valve
The valves motor is removable from the assembly without detaching the
piping from the coil. The motor simply screws to the top of the brass
body allowing ease of replacement during a service situation. See Figure 20 for face and bypass coil isolation valve.
2-Way Isolation Valve (2-position)
1/2-/3/4-/1-sweat; 1.8 Cv; Htg-NO; Changeover & Clg-NC (Digit 16 = 3,7)
Actuator
UV-PRC001-EN
Valve Body
Control
2-position
Connections
1/2-sweat
Electrical
24 VAC, 60 HZ
20.2 lb
Stroke Time
ON/OFF
10 seconds ON
5 seconds OFF
Operating
Pressure
Ambient
35 to 122 F, non
condensing
Close-off
Pressure
1/2" = 30 psig
3/4" = 15 psig
1" = 9 psig
17
Piping
VUV Stroketime Value
Stroketime Values
Tables 14 and 15 should be used in identifying unit ventilator valve stroketime values for the vertical and horizontal units.
Table 14: Vertical unit ventilator (VUV) stroketime value
DIGIT(S)
1, 2, 3
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
VUV
18
12, 13
FA
FA
FA
FA
AA - AE
AA - AE
AA - AE
AA - AE
AA - AE
AA - AE
H1 - H6
H1 - H6
H1 - H6
H1 - H6
H1 - H6
H1 - H6
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DK
DK
DK
DK
DK
DK
DK
DK
DK
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
X3, X4, X6
X3, X4, X6
X3, X4, X6
X3, X4, X6
X3, X4, X6
X3, X4, X6
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
-
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
15
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
STROKE TIME
-
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
16
8
9
X
Y
W
G
Z
Q
H
R
W
G
Z
Q
H
R
8
9
X
Y
17
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
HEAT
105
105
105
105
105
105
105
105
45
45
105
105
105
105
45
45
105
105
105
105
W
G
Z
Q
H
R
T
U
V
85
85
85
W
G
Z
Q
H
R
W
G
Z
Q
4,
4,
4,
4,
4,
4,
5
5
5
5
5
5
105
105
105
105
W
G
Z
Q
H
R
W
G
Z
Q
H
R
NA
NA
NA
NA
NA
NA
-
ELC
ELC
ELC
ELC
ELC
ELC
ZN520
byte126
COOL
205
0
251
0
254
0
208
0
183
105
149
105
188
105
148
105
187
45
149
45
183
0
149
0
188
0
148
0
187
0
149
0
205
251
254
208
105
105
105
105
45
45
16
24
16
105
105
105
105
45
45
205
251
254
208
105
105
105
105
45
45
NA - ELC
105
NA - ELC
105
NA - ELC
105
NA - ELC
105
NA - ELC
45
NA - ELC
45
VALVE 1 VALVE 2
TUC
byte 125
NA - DX
NA - DX
NA - DX
NA - DX
78
123
126
80
121
80
NA
NA
NA
NA
NA
NA
78
123
126
80
121
80
78
123
126
80
121
80
78
123
126
80
121
80
78
123
126
80
121
80
byte 132
105
105
105
105
105
105
105
105
45
45
105
105
105
105
45
45
NA
NA
NA
NA
105
105
105
105
45
45
NA
NA
NA
105
105
105
105
45
45
NA
NA
NA
NA
105
105
105
105
45
45
105
105
105
105
45
45
byte 133
NA - DX
NA - DX
NA - DX
NA - DX
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
105
105
105
105
NA
NA
NA
NA
NA
NA
85
85
85
NA
NA
NA
NA
NA
NA
105
105
105
105
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
UV-PRC001-EN
Piping
HUV Stroketime Value
Table 15: Horizontal unit ventilator (HUV) stroketime value
DIGIT(S)
1, 2, 3
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
HUV
12, 13
FA
FA
FA
FA
AA - AE
AA - AE
AA - AE
AA - AE
AA - AE
AA - AE
H1 - H6
H1 - H6
H1 - H6
H1 - H6
H1 - H6
H1 - H6
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DA - DE
DK
DK
DK
DK
DK
DK
DK
DK
DK
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
R1, R2
X3, X4, X6
X3, X4, X6
X3, X4, X6
X3, X4, X6
X3, X4, X6
X3, X4, X6
UV-PRC001-EN
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
-
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
H,
15
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
Q, R,
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
STROKE TIME
-
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
16
8
9
X
Y
W
G
Z
Q
H
R
W
G
Z
Q
H
R
8
9
X
Y
17
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
HEAT
105
105
105
105
105
105
105
105
45
45
105
105
105
105
45
45
105
105
105
105
W
G
Z
Q
H
R
T
U
V
85
85
85
W
G
Z
Q
H
R
W
G
Z
Q
4,
4,
4,
4,
4,
4,
5
5
5
5
5
5
105
105
105
105
W
G
Z
Q
H
R
W
G
Z
Q
H
R
NA
NA
NA
NA
NA
NA
-
ELC
ELC
ELC
ELC
ELC
ELC
ZN520
byte126
COOL
205
0
251
0
254
0
208
0
183
105
149
105
188
105
148
105
187
45
149
45
183
0
149
0
188
0
148
0
187
0
149
0
205
251
254
208
105
105
105
105
45
45
16
24
16
105
105
105
105
45
45
205
251
254
208
105
105
105
105
45
45
NA - ELC
105
NA - ELC
105
NA - ELC
105
NA - ELC
105
NA - ELC
45
NA - ELC
45
VALVE 1 VALVE 2
TUC
byte 125
NA - DX
NA - DX
NA - DX
NA - DX
78
123
126
80
121
80
NA
NA
NA
NA
NA
NA
78
123
126
80
121
80
205
251
254
208
249
208
78
123
126
80
121
80
78
123
126
80
121
80
byte 132
105
105
105
105
105
105
105
105
45
45
105
105
105
105
45
45
NA
NA
NA
NA
105
105
105
105
45
45
NA
NA
NA
105
105
105
105
45
45
NA
NA
NA
NA
105
105
105
105
45
45
105
105
105
105
45
45
byte 133
NA - DX
NA - DX
NA - DX
NA - DX
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
105
105
105
105
NA
NA
NA
NA
NA
NA
85
85
85
NA
NA
NA
NA
NA
NA
105
105
105
105
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
19
Piping
Factory Installed Piping
Factory Installed Piping Packages
Trane has the ability to factory mount piping packages to hydronic coil
selections when ordering TUC, Tracer ZN520, pneumatic, or end-device
controls. (Note: Valves for steam coils are not factory piped.)
Piping packages are available in either 2-way, or 3-way configurations.
The 3-point floating valve is piped on the return side of the coil. Piping
packages are factory leak tested to 90 psig to ensure joint integrity.
(Note: Insulation for the piping packages is field provided and field installed.)
See Figure 21 for typical piping package.
Figure 21: Typical piping package
(package D shown)
Piping Package Types
CBV = Circuit balancing valve (page 21)
20
P/T Port = Pressure/temperature port
BV = Bypass balancing valve
UV-PRC001-EN
Piping
Factory Installed Piping
Circuit Setter Manual Balancing Valve
Factory installed piping packages that include the circuit balancing valve
(OPTION C or D) feature incorporate a circuit balancing valve.
The circuit balancing valve is available in both 1/2-and 3/4-inch (nominal)
piping packages. This flow mechanism is a combination of service shutoff, balancing, and flow measuring device. The flow measurement is
achieved by means of a fixed geometry venturi-style orifice. Two pressure reading schrader ports are provided for system balancing. The
memory stop allows return of the stem/ball to its original set position after use as a servicing shut-off device. The balancing valve stem has
wrenching flats for normal setting. The valve stem is capable of operation by a 4:1 turn ratio for stem positioning. The balancing valve is designed for use at 300 psi up to 250 F. See Figure 22 for circuit setter
balancing valve.
Figure 22: Circuit setter
balancing valve
Note: The circuit setter is used as a return shut-off valve. It is not available
when selecting the 2-position isolation valve option.
Water Pressure Drops in (feet) for Unit Vent 2-way and 3-way Piping Packages
Table 16: 1.8 Cv rated valves in 1/2" piping packages
Piping Pkg
Cv Rating
2 GPM
3 GPM
4 GPM
5 GPM
6 GPM
7 GPM
Basic Pkg
1.8
3.2
7.1
12.6
19.5
28.0
38.1
C
w/ CBV
1.8
5.2
11.7
20.7
32.3
46.4
63.1
D
w/ Strainer & CBV
1.8
5.5
12.4
22.0
34.2
49.2
66.8
A
Table 17: 4.6 Cv rated valves in 1/2" piping packages
Piping Pkg
Cv Rating
5 GPM
6 GPM
7 GPM
8 GPM
9 GPM
10 GPM
11 GPM
12 GPM
13 GPM
14 GPM
Basic Pkg
4.6
4.5
6.3
8.5
11.0
13.7
16.8
20.2
23.9
27.9
32.1
C
w/ CBV
4.6
17.2
24.7
33.5
43.6
55.1
67.9
-
-
-
-
D
w/ Strainer & CBV
4.6
19.1
27.4
37.2
48.5
61.3
75.5
-
-
-
-
A
Table 18: 7.3 Cv rated valves in 3/4" piping packages
Piping Pkg
Cv Rating
9
GPM
10
GPM
11
GPM
12
GPM
13
GPM
14
GPM
15
GPM
16
GPM
17
GPM
18
GPM
19
GPM
20
GPM
Basic Pkg
7.3
4.8
5.9
7.1
8.4
9.8
11.4
13.0
14.8
16.7
18.7
20.8
23.0
C
w/ CBV
7.3
16.8
20.7
25.1
29.8
34.9
40.5
46.5
-
-
-
-
-
D
w/ Strainer & CBV
7.3
21.2
26.2
31.7
37.7
44.2
51.2
58.8
-
-
-
-
-
A
UV-PRC001-EN
21
Piping
Crossover Piping
Crossover Piping
The selection of crossover piping
allows the contractor the ability to
install field piping for unit connection prior to receipt of the vertical
unit ventilators. The factory installed crossover pipe is located at
the back of the unit along the wall.
The crossover pipng extends 1inch beyond the length of the unit
on both sides for ease of field connection.
The crossover piping option is
available for:
•
2-pipe heating/cooling
changeover coil.
DIGIT 12 = A
•
2-pipe heating ONLY coil
DIGIT 12 = H
•
4-pipe heating and cooling
coil DIGIT 12 = D. For 4-pipe
coils, the crossover is factory supplied for the main
cooling coil ONLY.
The type M crossover copper is
available as either 1-3/8-inch inside diameter (I.D.) sweat connection or 2-1/8-inch inside diameter
(I.D.) sweat connection. A 7/8-inch
inside diameter (I.D.) shut-off ball
valve is supplied at both the supply and return connections. These
connections can be found in either
the right or left hand end pocket.
Insulation of the crossover pipes is
provided for all applications. The
insulation is 3/8-inch thickness.
Expansion compensation between
the factory piping package and the
crossover piping is achieved using
a flex hose. Trane provides the
hoses if factory piping package(s)
are selected. Expansion compensation for the crossover piping
must be handled external to the
unit ventilator. See Figure 23
for 2-pipe crossover
piping.
Figure 23: 2-pipe crossover piping
Note:
22
•
For dimensional data, see jobsite connection section on Pages 104
and 105 of this catalog.
•
Crossover piping is not available with the end device control package.
UV-PRC001-EN
Controls
Why Trane Controls?
Whether involved in a retrofit or in new construction applications, Trane has the control design to fit the systems requirements. The broad range of control packages offered range from a field convertible end-device
package, to a complete building automation system solution by incorporating the ICS (Integrated ComfortTM
system) design.
The good news is...Trane ICS controls (both ZN520 and TUC), are factory tested and commissioned with Trane
application expertise to provide comfort, efficiency, and reliability, as well as, single-source warranty and service. With Tranes integrated controls, the installed costs are lower because the equipment has turn-key factory
controls and every component of the system is optimized to fit with the controller. Trane installs not only the
controller, but also the hardware that works intimately with the controller to allow the system to function properly (i.e., piping package, valves, dampers, actuators, etc.). When a classroom unit ventilator with Trane controls arrives to the jobsite, it is completely ready for quick installation and operation.
The following chart explains the difference in the control design.
GRAPHIC
No Controls/Field
Installed
End-Device
Package
(EDP)
Tracer ZN520TM
TUC
Pneumatic
UV-PRC001-EN
DESCRIPTION
APPLICATION
ICS
PROTOCOL
In a retrofit market where a
non Trane controller has
been applied to the building.
No
Not Available
A pre-wired (to a terminal strip) control offering of selected control
components. The EDP is
ready for a field provided controller and
temperature sensor.
Retrofit market where single
and multiple unit replacement occurs.
No
Not Available
Page 24
Direct Digital Control
board designed to provide control of the
HVAC equipment, as
well as total building
management.
Retrofit market where overall
system upgrade is specified.
Yes
Comm5
Page 26
Direct Digital Control
board used in an ICS
setting to combine
HVAC and building
management into one
comfort system.
Retrofit market where a full
building management system is specified.
Yes
Comm4
Page 30
The mechanical 24V
pneumatic contoller
provides a mixed air
actuator, discharge air
sensor and required
solenoids and pneumatic switches.
Retrofit market where existing units or additions to current pneumatic controls are
specified.
No
Not Available
Page 33
Unit comes equipped with an auto transformer,
fan speed switch and a damper blade only.
WHERE TO FIND
New building design where
field provided controls are
specified.
Multi-unit ( ±100 ) installation
where units are linked by a
common twisted pair of wire
for a communication link.
Multi-unit ( ±100 ) installation
where units are linked to a
Tracer or Tracer Summit system to provide complete
building management control.
23
Controls
End Device Package
End Device Package
The direct digital control (DDC)
end device package is a prewired
control offering of selected control
components. This allows any control vendor to easily interface with
the Trane unit ventilator.
The DDC end device package consists of the following components
which are factory wired to a terminal strip that is located in the left
hand end pocket of the unit ventilator. The unit is shipped from the
factory with a UL listing. See Figure 24 for end device controls.
•
24
A NEC Class 2 type transformer with a primary side
of 120 VAC and a secondary
side of 24 VAC at 90 VA. The
transformer is manually resettable.
•
The fan start/stop relay is a
double pole/double throw
relay rated for 20-amps at
120/240 VAC.
•
A 10-pole terminal block is
rated for 20-amps at 300
volts.
•
An optional low temperature
detection thermostat has a
vapor pressure type element
strung along the face of the
coil. If one inch of this element falls below 38-degrees
F, it is designed to shut the
outside air damper and turn
off the fan motor. The device
is manually reset and has a
contact rating of 8.3 FLA at
240 volts.
Once the basic package is selected, the following options are also
available:
•
Control valve(s). 3-point
floating ONLY. 2-way and 3way.
•
Face and bypass isolation
valve. 2-position, 2-way
spring return ONLY.
•
Face and bypass damper actuator. 3-point ONLY.
•
OA/RA actuator. 3-point floating or 2-10 V available.
•
Piping package
Figure 24: End device controls
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Controls
End Device Package
Valves/Piping Package
Control valves are mounted in a
factory piping package to include
unions at the coil, p/t ports on the
supply and return lines, and shutoff ball valve on the supply and return.
Cooling and heating coil valves are
only available as 3-point modulating, non-spring return type valves.
Stroke time is approximately 105seconds for 1/2-inch valves, and
85-seconds for 3/4-inch valves.
The ambient temperature range is
-30 F to 130 F. The valve body connections are NPT threaded, and
the maximum pressure is 300 psi.
The maximum water temperature
is 200 F with a close-off pressure of
133 psi.
•
Optional outside-air/returnair actuator is spring return
and takes a 3-point floating
signal. A 2-10 VDC option is
also available. It provides 25
in/lb of torque with a drive
time of 90-seconds. The
power consumption is 7 VA
with temperature limits of 25 F to 125 F.
Fan Start/Stop Relay
The fan start/stop relay enables
the fan start and stop. The fan’s
speed is controlled by a unit
mounted fan switch. See Figure
25 for end device control
package.
Note: Factory installed crossover
piping is not available when ordering end device controls. The low
temperature sensor and the cooling relay location prohibits crossover piping.
Note: See Page 15 in the piping
section for more information.
Damper Actuators
There are three types of damper
actuators used with the End Device Package:
•
Optional face and bypass actuator is 24-volt, 3-point
modulating, non-spring return. In-coming power is 24
VAC with a consumption of
2-watts. Maxmum torque of
35 in/lb and drive time is
180-seconds.
Note:
Face and bypass is available
on 2-pipe coils ONLY.
An isolation valve is not
available with the end device package.
Figure 25: End device control package
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25
Controls
Tracer ZN520
Tracer ZN520 Zone Controller
The ZN520 is a factory installed
and tested direct digital control
(DDC) board designed to provide
control of the classroom unit ventilator, and the fan coil products.
The ZN520 controller is designed
to be used in the following applications:
•
As part of the Trane Tracer
Summit building automation
system, the Tracer ZN520 becomes an important part of
the Trane Integrated Comfort
system (ICS).
•
The ZN520 can function as a
completely standalone controller in situations where a
building automation system
(BAS) is not present.
•
For situations when a nonTrane BAS is present, the
ZN520 can be used as an interoperable unit controller.
Through building management of
the HVAC system, optimizing energy consumption becomes possible at a classroom level. Each unit
is capable of functioning independently of one another during occupied and unoccupied hours of the
day. This allows the temperature
setpoint and ventilation setting to
be changed automatically based
on classroom usage. See Figure
26 for Tracer ZN520 system.
Figure 26: Tracer ZN520 system
26
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Controls
Tracer ZN520
Two Systems in One
In an ICS environment, the ZN520
is pre-designed to install quickly
and easily into the system. Since
the controller and the unit are factory tested and commissioned, the
start-up time for the entire system
is minimized. Trane becomes the
single source of responsibility for
the equipment, unit controls, and
building automation system.
As a standalone controller, the
ZN520 is ideally suited for fix-onfail replacement of units with old
pneumatic controllers, or in situations where a BAS will be added at
a later date. Once power is applied
to the controller, it will automatically start up and run based upon
the setpoint on the local zone sensor. An individual time clock can
be added to the unit for local
scheduling.
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The ZN520 is certified to the interoperable LonMark Space Comfort Controller profile. This allows
the controller to be used with another vendor’s BAS and thereby
still provide the high quality of factory installation and testing. In addition, the ZN520 provides one of
the most extensive interoperable
data lists of any controller of its
type in the industry.
Tracer ZN520 features include:
Automatic Fan and Ventilation
Reset
The ZN520 can be selected to automatically choose the best fan
speed for the classroom load. The
goal is to keep the fan speed as
low as possible and thereby mini-
mize air noise to the occupants. In
the conjunction with this feature,
the controller can automatically
adjust the outside air damper with
changes in fan speed. This helps
maintain the proper amount of
ventilation air to the occupants independent of the fan speed.
Active Dehumidification
On unit ventilators with reheat
coils, the ZN520 can provide active
dehumidification to the classroom. This means that the
classroom relative humidity can
be kept below an adjustable setpoint independent outdoor weather conditions. Indoor humidity
levels are recommended by
ASHRAE to be kept below 60% in
order to minimize microbial
growth and the life span of airborne illness causing germs.
27
Controls
Tracer ZN520
Manual Output Test
The ZN520 controller includes a
manual output test function. This
function may be initiated from the
blue test push button on the controller or through RoverTM. This
feature is used to manually exercise the outputs in a defined sequence.
The purpose of this test sequence
is to verify output and end device
operation. The manual output test
function may also be used in the
following situations:
•
Reset latching diagnostics
•
Verify output wiring and operation
•
Force the water valve(s) open
to balance the hydronic system during installation setup or service.
Filter Maintenance
Filter status for the controller is
based on the cumulative run hours
of the unit fan. The controller compares the amount of fan run time
against an adjustable fan run hour
(stored in the controller) to determine when maintenance is recommended for the unit. The runhours value may be user edited as
required (through Rover). The valid range for the fan run hours limit
is 0 to 5000 hours with a default of
600 hours. Once the run hours limit has been exceeded, the controller generates a maintenance
required diagnostic (unit will not
shut-down). The user will be notified of this diagnostic through the
building automation system or
when a Trane Service Tool is communicating with the controller.
Master Slave
(Data Sharing)
Because the ZN520 controller utilizes LonWorksTM technology, the
controller can send or receive data
(setpoint, heat/cool mode, fan request, space temperature, etc.) to
and from other controllers on the
communication link with or without the existence of a building automation system. This applies to
applications where multiple units
might share one zone sensor for
both stand-alone (with communication wiring between units) and a
building automation system. See
Figure 27 for ZN520 master
slave system layout.
Figure 27: ZN520 master slave system
28
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Controls
Tracer ZN520
Water Valve Override
The ZN520 can be commanded via
the Rover service tool to open all
hydronic valves 100%. This allows
for the faster water balancing of
each unit and the entire system
when the command is sent globally to all controllers. A properly balanced system is essential for
proper and efficient operation.
Hydronic Coil Freeze
Protection (Freeze Avoidance)
Unit ventilator systems in cold climates need to take precautions to
avoid hydronic coil freeze-up. The
ZN520 does this from three different aspects. Any of these methods
of protections will result in the unit
fan being disabled, the outside air
damper being shut, and the hydronic valves being opened 100%.
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The three methods of freeze avoidance include:
1
A binary freeze protection
thermostat is mounted on
the coil and will cause a
latching diagnostic if the coil
temperature falls below
35 F.
2
An analog discharge air sensor monitors the temperature of the air coming off of
the coil and if the temperature falls below 40 F the outside air damper is closed,
the fan is turned off and the
valves are fully opened.
3
When in the unoccupied
mode the ZN520 has an adjustable freeze avoidance
setpoint. If the outside air
temperature is below the
setpoint the unit will open
the valves to allow water to
flow through the coils.
Interoperability
Interoperability allows the owner
freedom to select multiple vendors, and multiple products. With
this advantage, the owner can
choose the best products, the best
application, and the best service
from a variety of suppliers to meet
their evolving building control
needs in a cost effective manner.
Generic Binary Input/Output
The three generic binary inputs/
outputs are not part of the normal
control, but are actually controlled
through he Tracer Summit system
(when present) to issue commands to the ZN520 control to turn
the generic inputs/outputs of addon equipment (such as baseboard
heating, exhaust fans, occupancy
sensor, lighting, etc.) on and off.
This binary port is not affected
when other binary diagnostics interrupt unit operation.
29
Controls
TUC
TUC Controller
The terminal unit control
(TUC) board is a factory installed DDC offering for classroom unit ventilator
systems. It is designed to
support either:
•
•
tory per the application.
Additionally, the configuration can
be adjusted by using the service
tool software, EveryWare TM in the
field.
An Integrated Comfort
system (ICS)
A standalone
configuration
The classroom unit ventilator controls will be configured at the fac-
Integrated Control System
When classroom unit ventilators
are applied in combination with an
integrated controller, like the TUC,
and the Tracer Summit system,
the unit ventilator will operate as
part of a large building automation
system. Diagnostics can be received remotely by a modem, allowing the service or maintenance
technician to diagnose a failure or
maintenance situation before
comfort is compromised …thus reducing the number of on-site service calls. See Figure 28 for
TUC/ICS control system.
Figure 28: TUC/ICS control system
30
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Controls
TUC
Standalone Configuration
As a standalone controller, the
TUC is ideally suited for fix-on-fail
replacement of units with old
pneumatic controllers, or in situations where a BAS will be added at
a later date. Once power is applied
to the controller, it will automatically start up and run based upon
the setpoint on the local zone sensor. An individual time clock can
be added to the unit for local
scheduling.
TUC vs. ZN520
(What’s the Difference?)
When selecting an ICS system, It is
often difficult to differentiate
which system will better suit the
comfort requirement within the
building. There are very few differences in the TUC and the ZN520
controller. And yet, these differences should be evaluated prior to
selecting the best-suited ICS system design.
Master Slave
A single zone sensor may be used
to control multiple TUC controllers
in a stand alone situation. The TUC
controllers must be wired in parallel to respond properly to the zone
sensor’s setpoint. See Figure 29
for a TUC master slave set-up.
Figure 29: TUC master slave set-up
With the master slave set-up, the
common zone sensor cannot
provide a set point to all the units.
Therefore, a unit mounted thermostat should be used on each unit to provide an adjustable set point for proper operation.
Note: When establishing the master slave sensor connection, it is critical to mention that the jumper (W1) on
all TUC controllers wired in parallel to the master controller must be cut. If at a later time, a BAS is designed
into the control system, a reinstallation of the jumper will be required.
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31
Controls
TUC
Dirty Filter Proof
The TUC controller provides positive proof of a dirty filter via a differential pressure switch. The
pressure switch contains two
ports that reside on each side of
the air filter. Unlike the ZN520
(which tracks fan time usage), the
TUC control system gives the owner positive proof of air resistance
through the filter to notify the
building owner of a filter maintenance situation
Active Humidity Control
Trane’s active dehumidification
control strategy automatically determines the proper control sequence and continuously resets
the unit ventilator’s leaving air
temperature, as needed, to manage both the temperature and the
relative humidity sensed in the
space. This approach overcomes
the deficiencies of other means of
control based on temperature
alone.
The active dehumidification control, which includes a cooling coil
with post conditioning (reheat)
control, is available with the TUC.
32
The algorithms associated with
this control option are specifically
designed to govern both space
temperature and relative humidity. These algorithms minimize the
amount of reheat needed to maintain the space humidity below a
preset limit. Reheat is used only
when required, and is operated in
the most energy efficient manner
for the system. This reheat energy
can be recovered from the chilled
water system (most preferred), or
provided as a new energy. See the
Engineering Bulletin:
UV-EB-11-497 (EN) for Active
Humidity Control with Unit Ventilator Systems.
Modulating Valve Control
Configuration of a modulating analog actuator is possible with the
TUC control selection. Unlike the
ZN520 which controls as 2-position and 3-wire floating, the TUC
allows a field supplied analog voltage input from 0 to 10-volts (also,
4 to 20 mA, 2 to 10-volts, 1 to 5
VDC) to drive outside air control,
and water valve control for true
modulation of an outside air
damper and/or coil control.
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Controls
Pneumatic Controls
About the Pneumatic Controls
Trane’s pneumatic control package provides an ideal replacement
and retrofit in existing units or additions currently designed with
pneumatic controls.
Room control provides flexibility
with a dual setpoint thermostat for
each unit. This provides the ability
to set a day temperature (occupied
mode) and a night temperature
(unoccupied mode) for each unit.
on until the space temperature exceeds the unoccupied setpoint.
Located in the right hand end
pocket of the classroom unit ventilator, the pneumatic package supports a mixed air actuator,
discharge air sensor, and required
solenoids and pneumatic electric
(PE) switches required for proper
operation. See Figure 30 pneumatic package. Trane provides
the following selectable options
are also available with the controller:
A single thermostat per unit is provided for day (occupied mode)
temperature setting with both
zone and room control.
Morning Warm-up
When the space temperature is
greater than 3-degrees F below
setpoint, the outside air damper
remains closed. If the space temperature comes within 3-degrees F
of setpoint the outside air damper
will modulate to minimum position.
•
Heating only room or zone
control
•
2-pipe zone control
•
4-pipe zone control
•
Electric low limit thermostat
•
Valve or face and bypass
control
•
Valve or face and bypass control
DX
During the unoccupied cycle for
zone control, the unit ventilators
are cycled on a zone basis (zone indexing to be done by others).
When the unit ventilator is off, the
outside air damper is closed and
the heating valve is in an open position.
During the unoccupied cycle for
room control, the outside air
damper is closed and the hot water valve is open. As the space
temperature drops below the unoccupied setpoint, the fan will cycle on and the outdoor air damper
will remain
closed. The
fan remains
Note: The day/night changeover
system is field supplied and installed.
Low Temperature Protection
(manual reset device)
The low temperature thermostat
option senses the discharge air
temperature. Should the temperature drop below 38-degrees F (adjustable), the unit ventilator will
become disabled.
Note: Face and bypass is available
for 2-pipe CW and HW systems
only.
Zone vs. Room Control
Zone control provides the ability to
link several units together with a
single unoccupied night thermostat. This enables the Unoccupied
cycle from one central thermostat
location.
Figure 30: Pneumatic package
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33
Controls
ASHRAE Cycles
Control Cycles-General
There are a variety of control systems available today in unit ventilators. The exact method of
controlling the amount of outside
air and heating element capacity
can vary. However, all systems
provide a sequence of operation
designed to provide rapid classroom warm-up and increasing
amount of ventilation air to offset
classroom overheating.
Classroom air conditioners are
normally controlled according to
ASHRAE Cycle I, II or III and variations of these control cycles. The
Trane classroom unit ventilators
only utilize cycles I and II. See Figure 31 for cycle charts.
ASHRAE Cycle I
(Spring Return)
ASHRAE Cycle I admits 100% outdoor air at all times except during
a warm-up cycle. During warm-up,
the outside air damper is closed.
As room temperature approaches
the thermostat setting, the outside
air damper opens fully, and the
unit handles 100% outside air. Unit
capacity is then controlled by
modulating the heating element
capacity.
ASHRAE Cycle I can be used in
those areas where a large quantity
of outdoor air is required to offset
the air being exhausted relieving
the room of unpleasant odors and
particles.
ASHRAE Cycle II
(spring return)
ASHRAE Cycle II is the most widely used of the three types of series.
Similar to ASHRAE Cycle I, the
outside air damper is closed during warm-up. But with Cycle II, the
unit handles recirculated air
through the return-air system. As
temperature approaches the comfort setting, the outside air damper opens to admit a
predetermined minimum amount
of outside air. This minimum has
been established by local code requirements and good engineering
practices per ARI 840 to provide
adequate ventilation. Unit capacity is controlled by varying the
heating element output. If room
temperature rises above the thermostat setting, the heating element is turned off and an
increasing amount of outside air is
admitted until only outside air is
being delivered.
This cycle may incorporate a minimum discharge air temperature
sensor that overrides the other
controls to maintain an acceptable
discharge temperature. When the
outside air temperature is very
cold, the minimum air temperature control modulates the
amount of outside air being delivered. This keeps the mixture temperature delivered to the room at
55 F or 60 F.
Figure 31: Cycle charts
ASHRAE Cycle II is a very economical control sequence since only
the minimum amount of outside
air is heated and free natural cooling is available to offset the heat
gains in occupied classrooms.
34
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Application
Considerations
Standard Depth Unit
The vertical unit ventilator is a
floor mounted classroom air conditioner. Its main application is in
the perimeter rooms of a school.
Typically, the vertical unit is
mounted flush with the wall with
the fresh air opening in the back
and the return air opening in the
front. This allows for the fresh air
to come straight through the wall
to the unit.
An optional fully insulated back is
available on the standard depth
units for added protection in cold
climates.
Side View
1-Inch Falseback Unit
An optional 1-inch falseback unit
ventilator is designed to replace
unit with similar depths (16 1/4inch). It is ideal for matching a unit
to existing shelving. This 1-inch
extended depth is not recommended to be used as an air plenum. The 1-inch added depth will
not fit requirements as an air plenum and should not be used in the
design of this type of application.
Side View
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35
Application
Considerations
6-Inch Falseback Unit
A 6-inch falseback unit increases
the size of the fresh air opening to
accommodate sunken rooms or
wall openings that are difficult to
reach. Wallbox location is more
versatile with a 6-inch falseback
because of the air plenum created
by the added 6-inch depth. This
application is often used to elevate
the outside air (OA) opening above
the snow line.
Trane offers an optional horizontal
baffle to close-off outside air from
the crossover piping and exterior
surfaces in colder climates.
Exploded View
6-Inch Falseback Unit
The above picture features a 6-inch
falseback with a standard insulated
pipe chase cover.
36
Side Views
6-Inch Falseback
Unit with Baffle
The above picture features a 6-inch
falseback with a standard insulated
pipe chase cover and an optional
insulated baffle.
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Application
Considerations
Vertical Unit Ventilator
with Subbase
A subbase is available in all 15 1/4inch, 16 1/4-inch and 21 1/4-inch
unit depths. The subbase will increase the over all unit height from
30 inches up to 32, 34, or 36-inches
dependent upon subbase height
ordered. The added height raises
the outside air (OA) opening to aid
in eliminating snow or debris from
entering the unit ventilator.
Note: The subbase is shipped separate from the unit (not connected
to the unit) and installed at the job
site for leveling purposes.
Side View
6-inch Falseback Unit with
Ducted Top
An optional ducted top inlet arrangement or discharge is also
available. For the ducted application, it may be necessary to include a motor with high external
static pressure capabilities.
Caution:
Applying high-static motors when
the external static to the units is
below 0.25-inch may cause objectionable noise.
Side View
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37
Application
Considerations
Dynamic Air Barrier Unit
The dynamic air barrier unit is traditionally applied in cold climates.
The dynamic air barrier unit pull
the cold drafts from the windows
through the shelving (by Trane) to
be intercepted at both ends of the
unit ventilator. The unit ventilator
then draws the falling draft in as
return-air to be circulated into the
standard cycle.
When selecting the dynamic air
barrier option, the face and bypass
coil control is not available because of space limitations of the
unit when applying the face and
bypass damper.
The dynamic air barrier’s returnair design does not include a
damper in the unit ventilator’s upper opening. This option only permits a free return-air
design through the back of
the unit ventilator.
38
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Application
Considerations
Energy Recovery
Compatible Unit Ventilator
The energy recovery unit ventilator (ERS) is designed to work with
a classroom unit ventilator. This
energy recovery design allows up
to 500 cfm of outside air to be circulated into the space while cutting the ventilation load by 75percent on the classroom unit
ventilator.
The ERS contains an air-toair heat exchanger (desiccant heat wheel) with two
separate air streams flowing
in a counter-clockwise direction. The desiccant wheel has a
75-percent efficiency that transfers
both latent and sensible loads
from the outside air in the summer
to the exhaust air. In the winter,
the wheel adds the room’s latent
and sensible loads to the incoming ventilation air.
Exploded View
Top View
The energy recovery unit ventilator allows owners to bring
the required outside air and
save energy. The unit also
provides a reliable solution to
ASHRAE 62-89 outside air requirements.
The energy recovery system
allows the unit
ventilator to
be downsized along
with the
chiller, boiler and piping.
Typical Application
Side View
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39
Application
Considerations
Complete System
Trane provides an extensive selection of rugged, versatile accessories matched to the styling of the
Trane unit ventilator. With these accessories, an attractive wall-to-wall installation is possible that provides valuable classroom storage. Trane accessory components adapt to
wall irregularities.
Outside Air Leakage
Irregular or unlevel flooring along with an uneven wall
may cause air leakage below the vertical classroom unit ventilator. To help prevent cold drafts from entering the
classroom, Trane recommends an insulated pad to be
placed below the unit ventilator. This field supplied
pad aids in blocking the cold air from entering the
room. This pad is not needed in most applications.
40
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Application
Considerations
Fully Recessed Unit
The horizontal unit ventilator is a
ceiling hung air conditioner. The
typical application is in an interior
zone of a school. Trane offers several inlet and discharge arrangements to allow for numerous
application needs.
For a totally concealed unit, Trane
offers duct collars on the outside
air inlet, return air inlet and discharge air outlet.
Partially Exposed Unit
The bottom discharge arrangement adds an overall width dimension of 13 1/8-inch for unit
sizes 075-150, and an added width
of 14 1/8-inch for unit size 200.
To give the unit a finished appearance, recessing flanges may be
selected.
UV-PRC001-EN
41
Application
Considerations
Partially Exposed Unit
Another example of a partially exposed unit ventilator is a fresh-air
upper back, with a return-air lower
back, and a bottom double deflection discharge (option F in Digit
20).
This application requires field
supplied ductwork to be run to
the unit ventilator.
Fully Exposed Unit
The typical combination for a fully
exposed unit application is a
fresh-air ducted upper back, with
a return-air bar grille on the bottom, and front discharge (option H
in Digit 20).
Note: All horizontal unit configurations contain an appliance
grade paint finish.
42
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Application
Considerations
Ducted Discharge
When selecting ducted discharge
for a horizontal unit ventilator, the
location of the discharge ducting
could be critical to other design
features of the job. Recessed
lighting may interfere with unit
ductwork when working within
the tight constraints above the
ceiling grid. Trane offers three different ducted discharge locations
to aid in the design layout of the
job.
Note: When a high external static
pressure motor is used on a
ducted system, the return-air
should enter through a rear duct
connection. The return-air should
pass through a lined return-air
duct with at least one 90-degree
elbow to lower noise.
Condensate Piping
The unit ventilator drain pan connection is located on the same
side as the cooling coil connections on all hydronic or DX units.
The stubout connection size is 3/4inch O.D.
All field supplied condensate lines
to the unit should contain a 1/4inch in 12-inch slope away from
the unit ventilator. This is typical
for most local codes. A trap is also
typically provided somewhere in
the system.
Note: Drain pan connections are
field convertible.
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43
Application
Considerations
Ducted Applications
Ductwork to the unit ventilator may include outdoor air (OA), return air (RA) and/or discharge air (DA). The unit
ventilator is designed to operate against external static pressures (ESP) thru 0.45”. The ESP is determined by
adding the discharge air static pressure to the greater of either the outdoor air static pressure or the return air
static pressure.
A well designed duct system is beneficial to obtaining satisfactory fan performance. Determining resistance
losses for the duct work system is also necessary for acceptable fan performance. Assistance in the design of
duct work can be found in the ASHRAE Handbook.
Table 19: Static Pressure Percent Air Flow Reduction with Standard Motors
ESP - Inch Water
750 CFM
1000 CFM
1250 CFM
1500 CFM
2000 CFM
0.0625
8
7
10
9
6
0.125
15
14
18
17
12
0.1875
20
20
23
25
16
0.25
25
26
30
31
20
Table 20: Static Pressure Percent Air Flow Reduction with Hi-ESP Motors*
ESP - Inch Water
750 CFM
1000 CFM
1250 CFM
1500 CFM
2000 CFM
0.30
17
11
10
12
12
0.35
20
25
18
20
16
0.40
30
35
26
28
22
0.45
40
45
34
38
29
* Rated airflow @ .25” of static.
Note: It is very important not to over-estimate the ESP and oversize the motor. Too large of a motor
may result in operation problems such as noise, vibration and motor overloading. An example would
be non-ducted application.
A Hi ESP motor is typically specified when a supply-air duct is required. It is not recommended to use
a Hi ESP motor in a non ducted application.
Figure 32:
Part load capacity
44
UV-PRC001-EN
Selection Procedure
Hydronic Coils
Trane classroom air conditioners
provide air delivery and capacities
necessary to meet the requirements of modern school classrooms. They are available with the
industry’s widest selection of coils
to precisely satisfy heating, ventilating and air conditioning loads
with the best individual type of
system. Unit ventilator selection
involves three basic steps.
termined to assure good indoor air
quality. Purposely oversizing units
should be avoided, since it can
cause comfort and control problems.
Unit Size
Unit ventilator size is determined
by three factors:
• Total air circulation
• Determine classroom unit
cooling and/or heating loads
• Ventilation cooling economizer
capacity required
• Determine unit size
• Total cooling or heating capacity required
• Select the coil
Capacity Required
The first step in unit ventilator selection is to determine room heating and, in the case of air
conditioned schools, air conditioning loads. Accurate determination
of heating requirements and air
conditioning load is essential if the
equipment is to be economical in
first cost and operating cost.
Adequate ventilation is mandatory
in classroom air conditioning design. The amount is often specified
by local or state codes and, in air
conditioned schools, may be either the same or less than that
specified for heating systems. The
usual requirement is for between
15 and 25 cfm of outside air per occupant, based on the intended use
of the room. For instance, a chemistry laboratory normally requires
more ventilation for odor control
than a low occupancy speech clinic.
Ventilation is an important concern and should be accurately deUV-PRC001-EN
Total air circulation, if not specified by code, should be sufficient
to ensure comfort conditions
throughout the room. This is usually from six to nine air changes
per hour, but can vary with room
design and exposure. Often rooms
with large sun exposure require
additional circulation to avoid hot
spots.
Ventilation cooling capacity is determined by the amount of outside
air delivered with the outside air
damper fully open, and the temperature difference between the
outside air and the classroom. In
air conditioning applications, ventilation cooling capacities should
maintain the comfort setting in the
classroom whenever the outside
air temperature is below the unit
or system changeover temperature.
T1 = Room temperature.
T2 = Outside air temperature.
In classrooms with exceptionally
heavy air conditioning loads, unit
size may be determined by the total cooling requirement. Good
practice dictates 375 to 425 cfm
per ton of hydronic cooling capacity. Normally, however, Trane
classroom air conditioner coils
have sufficient capacities.
Example:
Given: Air circulation specified = 8 air
changes per hour
Classroom size = 35 ft long x 25 ft
wide x 10 ft high
Inside design air temperature = 75
degrees F
Ventilation cooling required at 58
degrees F = 29,000 BTU
CFM required =
8 changes/hr x (35 x 25 x 10)ft3
60 Minutes/hr
= 1170 cfm
Checking ventilation cooling capacity:
29,800 BTU = 1.085 x CFM x (80-58)
CFM = 1250
This indicates that a 1250 cfm (size
12 unit) would have satisfactory
ventilation cooling capacity at the
design changeover point of 58-degrees F. Coil capacity will become
confirmed when the coil is selected.
Example:
Ventilation cooling capacity =
1.085 x cfm t x (T 1 - T 2)
cfm t = Total air capacity of unit with
outside air damper open 100%.
45
Selection Procedure
Hydronic Coils
Coil Selection
Selecting the correct hydronic coil
is done by using the Trane Official
Product Selection System
TOPSS.
Wet Bulb Mixed =
WBr +% OA(WBo - WBr)
Dry Bulb Mixed =
DBr +% OA(DBo - DBr)
WBr = Wet Bulb Return Air
WBo = Wet Bulb Outside Air
DBr = Dry Bulb Return Air
Figure 33: TOPSS Icon.
DX and steam coils are not available in TOPSS. Refer to pages 78,
79, 81, 82, and 83.
Entering Conditions-Cooling
In cooling applications, the mixture
of wet bulb and dry bulb temperatures are determined by the return
air temperature, outside air temperature and percentage of outside
air. The percentage of outside air is
simply the cfm of outside air required for ventilation, divided by
the total air delivery of the unit.
46
Hydronic Selections
Hydronic coil selections are determined from:
• The entering wet and dry bulb
(EWB and EDB) temperatures
for cooling applications
• The entering dry bulb (EDB)
temperature for heating applications
DBo = Dry Bulb Outside Air
% OA = Outside Air Percentage
For convenience, TOPSS has a
mixed air calculator built into the
program.
• The entering water temperature (EWT) in both heating and
cooling applications
• Either the desired gallons per
minute (GPM) or the water
temperature change +T
UV-PRC001-EN
Selection Procedure
Direct Expansion Coils
Direct Expansion Refrigerant
Cooling Coil Selection
Trane unit ventilators are available
with direct expansion refrigerant
cooling coils. These coils come
complete with a thermal expansion valve. Trane unit ventilators
with refrigerant coils will operate
as a system with most properly
sized condensing units.
The proper selection of a DX split
system unit ventilator for a classroom application versus an office
application requires different considerations. This is due to the difference in the ventilation as well as
the cooling requirements for the
two applications.
• The office application is more
like a DX split system that is
applied in a residence than the
typical classroom. The ventilation air introduced into the
unit ventilator is small and the
number of occupants per
square foot of office space is
less than the classroom. In
most cases this application is
relatively trouble free if the
unit ventilator and the condensing unit are sized properly.
UV-PRC001-EN
• The classroom application
requires special considerations in order to prevent
objectionable discharge air
temperatures and nuisance
trips. Because of the high
number of occupants in a
classroom, the space will
require cooling even when the
outside air temperature is very
mild. With the mild ambient
conditions, the system can
create colder discharge air
temperatures than what is
desired by the occupants and
can even trip the frost stat on
the unit. A common way to
prevent this is to order the
condensing unit with a head
pressure control device. Other
preventative measures
include field installation of
either hot gas bypass or an
evaporator minimum pressure
regulator.
Another problem with split systems is OVERSIZING. If the unit
ventilator is oversized for the loads
in the space, the compressor will
have exceedingly short run times.
Since unit ventilator provides continuous ventilation in the occupied
mode, the space will be heated by
the ventilation air and then the
compressor will be enabled for a
short time to cool down the space.
This short cycling is detrimental to
the compressor in the condensing
unit. Additionally, in humid climates the ventilation air will be full
of moisture and the short run
times for the compressor will keep
the unit from extracting the humidity. This can result in classroom humidities above 60
percent.
If the condensing unit is oversized,
the suction temperature of the refrigerant will be excessively low
and will cause nuisance trips on
the frost stat. The best solution for
DX unit sizing, is 400 cfm per ton
of cooling capacity. If 400 cfm per
ton is followed, then most problems can be avoided. It is also wise
to not only look at the design selection for the system, but also
look at a typical low ambient condition to see if the suction temperatures are below an acceptable
level.
47
Selection Procedure
Electric Heat Coils/Steam Coils
Electric Heat Coil Selection
The heating capacity of the electric
fin-tube coil depends solely on the
kW rating of the coil. For selection,
refer to Table P16 or the TOPPS selection program. This table lists
the kW rating of each coil and the
MBh equivalent. Determine the
smallest electric coil that will meet
room heating capacity requirements.
Example:
Given:
Total heating requirement = 86.5 MBh
Inside design conditions = 70 F
Outside air = 33%
Classroom air conditioner previously
selected = Size 125
Electric classroom air conditioners
provide safe, functional and economical operation, utilizing a new
concept of electric heat coil design. The Trane electric coil is built
by placing electric heating elements inside a specially designed
extended surface fin-tube bundle.
This design results in a consider-
able reduction in fin and element
surface temperatures. Also, the
Trane coil has more even temperature distribution across the element. Since coil life expectancy is
dependent upon watt density
(watts per inch of element), temperature at which the coil is operating and air distribution over the
coil, the unique Trane coil design
helps maximize coil life.
Outside design conditions = 0 F
Steam Coil Selection
The capacity of steam heating coils
is determined by the entering (mixture) air temperature to the coil
and the pressure of saturated
steam to the coil. Select the coil
with a capacity equal to or greater
than the total heating requirements. Steam pressures of less
than 5 psi may adversely affect coil
performance.
48
Example:
Given:
Total heating requirement = 110.5 MBh
Outside design conditions = 20 F
Inside design conditions = 70 F
Outside air = 27%
Saturated steam pressure = 5 lbs
Classroom air conditioner previously
selected = Size 125
Entering air temp to coil = 70 - [.27 x
(70-20)] = 56.5 F
The K2 coil at these conditions has a
capacity of 111.0 MBh. Therefore, a K2
coil meets the room heating requirements.
The air temperature rise = 80 F.
Leaving air temperature = 45.7 + 95 =
125.7 F
Outside design conditions = 20 F.
UV-PRC001-EN
Selection Procedure
Glycol Adjustment Factors
Glycol in an HVAC System
Because the detrimental effects of
glycol are lower at high temperatures, little concern is given to capacity loss or increased pump
power when glycol is added to
heating systems. This is why it is
not uncommon to see glycol percentages up to 40 percent in the
heating loop of a system. However, the same is not true for cooling
systems. Concentrations of this
level are intolerable in cooling systems where fluid temperatures are
lower. The viscosity of the glycol
increases as the temperature of
the mixture drops. This not only
decreases the effectiveness of the
heat transfer, but it also makes the
mixture more difficult to pump. To
make things worse, as the percentage of glycol increases, the risk of
having laminar flow in the coil increases. This again is because glycol is more viscous than water.
With these effects in mind it is important to use a minimum amount
of glycol to protect the HVAC system.
Burst Protection vs. Freeze
Protection
• Burst protection is sufficient in
systems where there is adequate space to accommodate
the expansion of an ice/slush
mixture. The protection works
as follows: As the temperature
drops below the solution’s
freeze point, ice crystals begin
to form. Because the water
freezes first, the remaining
glycol solution is further concentrated and remains fluid.
The combination of ice crys-
tals and fluid make a flowable
slush. The volume increases
as this slush forms and flows
into the available expansion
volume (usually an expansion
tank). When a sufficient concentration of glycol is present,
no damage to the system will
occur.
• Freeze protection is required
in cases where no ice crystals
can be permitted to form or
where there is inadequate
expansion volume available.
HVAC systems intended to
start-up in cold weather after
prolonged winter shutdowns
may require freeze protection.
Table 21 is provided by Dow
Chemical Co for its ethylene
and propylene glycol products:
Table 21: Percentage Volume Glycol Concentration
Temperature
For Freeze Protection
For Burst Protection
Degree F
Ethylene Glycol
Propylene Glycol
Ethylene Glycol
Propylene Glycol
20
16%
17%
11%
11%
10
25%
26%
17%
18%
0
33%
34%
22%
23%
-10
39%
41%
26%
28%
-20
44%
45%
30%
30%
-30
48%
49%
30%
33%
-40
52%
51%
30%
35%
-50
56%
53%
30%
35%
-60
60%
55%
30%
35%
Table 21 shows that a 30 percent ethylene glycol solution is enough to burst protect a system down to -60 degree F. Because of the benefits of burst protection, excessive glycol only degrades the heat transfer and increases the pressure drop of the fluid without providing additional system protection. Use glycol correctly.
UV-PRC001-EN
49
Selection Procedure
Glycol Adjustment Factors
Glycol Correction Factors
The following four charts give the correction factors for capacity and water pressure drops for both ethylene
and propylene glycol. There are two charts for chilled water and two for hot water. The charts are approximations of coil performance for any Trane coil selected for a unit ventilator. The correction factor lines grow
broader as the percentage of glycol increases to include all coils in the chart. For example, a one row coil and
a four row coil will have different operating characteristics, but the correction factors are usually within 5% of
each other.(See Charts 1-4)
Chart 1: Correction factors for Ethylene Glycol in
chilled water at a constant gpm
Chart 2: Correction factors for Propylene Glycol in
chilled water at a constant gpm
Chart 3: Correction factors for Ethylene Glycol in
hot water at a constant gpm
Chart 4: Correction factors for Propylene Glycol in
hot water at a constant gpm
50
UV-PRC001-EN
Model Number
Shelving
Unit Ventilator Shelving
SHL A G 2 05 D0 0 F A D 0 0 0
5
DIGIT 1-3: UNIT CONFIGURATION
SHL = Classroom Shelving
DIGIT 4: DEVELOPMENT
SEQUENCE
A = Current Sequence
DIGIT 5: SHELVING STYLE
0 = Continuous Top ONLY/No
Shelving
2 = 18-inch Cut-to-Fit Filler
3 = 36-inch Cut-to-Fit Filler
4 = 12-inch Piping Compartment
5 = 18-inch Piping Compartment
A = 2-ft Open Shelving
B = 3-ft Open Shelving
C = 4-ft Open Shelving
D = 5-ft Open Shelving
E = 3-ft Closed Shelving
F = 4-ft Closed Shelving
G = 5-ft Closed Shelving
H = 3-ft Open Shelving
with Dynamic Air Barrier
J = 4-ft Open Shelving
with Dynamic Air Barrier
K = 5-ft Open Shelving
with Dynamic Air Barrier
L = 3-ft Closed Shelving
with Dynamic Air Barrier
M = 4-ft Closed Shelving
with Dynamic Air Barrier
N = 5-ft Closed Shelving
with Dynamic Air Barrier
DIGIT 6: SHELVING TOP DEPTH/
GRILLE
0 = Not Required
1 = 15 1/4-inch Shelving and Top
Depth
2 = 21 1/4-inch Top Depth w/o Grille
3 = 21 1/4-inch Top Depth w/ Steel
Grille
4 = 21 1/4-inch Top Depth w/Aluminum Grille and Damper
5 = 21 1/4-inch Top Depth w/Aluminum Grille
6 = 21 1/4-inch Deep Piping Compartment
UV-PRC001-EN
10
15
DIGIT 7&8: LENGTH of FORMICA
TOP
00 = No Formica Top for Shelving
Selected
01 = Formica Top w/Same Size and
Shelving
02 = 2-ft Top Only (no shelving)
03 = 3-ft Top Only (no shelving)
04 = 4-ft Top Only (no shelving)
05 = 5-ft Top Only (no shelving)
06 = 6-ft Continuous Top
07 = 7-ft Continuous Top
08 = 8-ft Continuous Top
09 = 9-ft Continuous Top
10 = 10-ft Continuous Top
11 = 11-ft Continuous Top
12 = 12-ft Continuous Top
18 = 18-inch Top Only (no shelving)
DIGIT 9&10: DESIGN SEQUENCE
D0 = Current Sequence
DIGIT 11: DECORATOR FORMICA
TOPS
0 = No Top
A = Champagne Papyrus Formica®
Top
C = Bordeaux Formica Top
E = Almond Formica Top
F = Ivory Blushing Formica Top
G = Natural Canvas Formica Top
H = Glacier Slate Formica Top
J = Birch Formica Top
K = Folkstone Formica Top
M = Fog Formica Top
N = Tundra Terra Formica Top
P = Light Mink Formica Top
Q = Stone Dust Formica Top
DIGIT 12: SHELVING PAINT
COLOR
0 = No Color Shelving Finish
A = Cameo White Shelving Finish
B = Soft Dove Shelving Finish
C = Deluxe Beige Shelving Finish
D = Driftwood Grey Shelving Finish
E = Rose Mauve Shelving Finish
F = Stone Grey Shelving Finish
G = Bronze Tone Shelving Finish
DIGIT 13: END COVERS
0 = No End Covers
A = 15 1/4-inch Deep End Covers
w/o Cutouts
B = 15 1/4-inch Deep End Covers w/
std Cutouts
C = 15 1/4-inch Deep End Covers w/
Extended Cutouts
D = 21 1/4-inch Deep End Covers
w/o Cutouts
E = 21 1/4-inch Deep End Covers w/
std Cutouts
F = 21 1/4-inch Deep End Covers w/
Extended Cutouts
DIGIT 14: SUBBASE
0 = No Subbase Feature
2 = 2-inch Subbase
4 = 4-inch Subbase
6 = 6-inch Subbase
DIGIT 15: KICKPLATE
0 = Standard Kickplate
1 = Side Kickplate
2 = Solid Front Kickplate
3 = Solid Front and Side Kickplate
DIGIT 16: KEY LOCK
0 = Standard Lock
1 = Master Key for Lock
ADDITIONAL ACCESSORIES
SGRL: Extra Steel Grille
2ft: Extra 2-ft Steel Grille
3ft: Extra 3-ft Steel Grille
4ft: Extra 4-ft Steel Grille
5ft: Extra 5-ft Steel Grille
AGRL: Extra Steel Grille
2ft: Extra 2-ft Aluminum Grille
3ft: Extra 3-ft Aluminum Grille
4ft: Extra 4-ft Aluminum Grille
5ft: Extra 5-ft Aluminum Grille
51
Model Number
Vertical Unit Ventilator
Vertical Unit Ventilator
VUV C 100 2 0 A0 DA C 0 0 0 0 0 1 1 A 0 1 0 0 0 0 1 1 1 0
5
DIGIT 1-3: UNIT CONFIGURATION
VUV = Vertical Unit Ventilator
DIGIT 4: DEVELOPMENT
SEQUENCE
C = Third Generation
DIGIT 5-7: NOMINAL CAPACITY
075 = 750 CFM
100 = 1000 CFM
125 = 1250 CFM
150 = 1500 CFM
DIGIT 8: UNIT INCOMING POWER
SUPPLY
1 = 120V/1-Phase Power Supply
2 = 208V/1-Phase Power Supply
3 = 208V/3-Phase Power Supply
4 = 240V/1-Phase Power Supply
5 = 240V/3-Phase Power Supply
6 = 277V/1-Phase Power Supply
8 = 480V/3-Phase 4-Wire Power
Supply
DIGIT 9: PSC MOTOR/
DISCONNECT
0 = Std. Motor, No Disconnect
1 = Std. Motor with Non-Fused
Toggle
2 = Std. Motor with Manual Starter
3 = Std. Motor with Circuit Breaker
(E-Ht)
A = Hi-ESP Motor, No Disconnect
B = Hi-ESP Motor with Non-Fused
Toggle
C = Hi-ESP Motor with Manual
Starter
D = Hi-ESP Motor with Circuit Breaker (E-Ht)
DIGIT 10&11: DESIGN SEQUENCE
E0 = Factory Assigned
10
15
20
DIGIT 12&13: COIL
CONFIGURATION
(Single Coil Options)
AA = 2-Pipe CW/HW Coil
AB = 2-Pipe CW/HW Coil
AC = 2-Pipe CW/HW Coil
AD = 2-Pipe CW/HW Coil
AE = 2-Pipe CW/HW Coil
H1 = 2-Pipe HW Coil
H2 = 2-Pipe HW Coil
H3 = 2-Pipe HW Coil
H4 = 2-Pipe HW Coil
H5 = 2-Pipe HW Coil
H6 = 2-Pipe HW Coil
K1 = 2-Pipe Steam Distributing Coil
K2 = 2-Pipe Steam Distributing Coil
E4 = 4-Element Electric Heat Coil
E6 = 6-Element Electric Heat Coil
E7 = 7-Element Electric Heat Coil
E9 = 9-Element Electric Heat Coil
F0 = 2-Pipe Direct Expansion Coil
(Coupled Coil Options)
DA = 4-Pipe CW/Preheat HW Coil
DC = 4-Pipe CW/Preheat HW Coil
DD = 4-Pipe CW/Preheat HW Coil
DE = 4-Pipe CW/Preheat HW Coil
DK = 4-Pipe CW/Steam Preheat
X3 = 2-Pipe CW/3-Element Preheat
X4 = 2-Pipe CW/4-Element Preheat
X6 = 2-Pipe CW/6-Element Preheat
FA = 4-Pipe DX/HW Preheat Coil
FK = 4-Pipe DX/Preheat Steam Coil
F3 = 2-Pipe DX/3-Element Preheat
F4 = 2-Pipe DX/4-Element Preheat
F6 = 2-Pipe DX/6-Element Preheat
R1 = 4-Pipe CW/Reheat HW Coil
R2 = 4-Pipe CW/Reheat HW Coil
DIGIT 14: COIL CONNECTIONS
(Single Coil Options)
A = Right Hand Supply
B = Left Hand Supply
(Coupled Coil Options)
C = Left Hand Cool/Right Hand Heat
D = Right Hand Cool/Left Hand Heat
52
25
30
DIGIT 15: CONTROL TYPES
0 = None/Field Installed Controls
(Terminal Unit Controller,
Standalone)
A = TUC Std. Package
B = TUC Std. Package w/ Low Temp
C = TUC Std. Package w/Time Clock
D = TUC Std. Package w/Low Temp
& Time Clock
(Terminal Unit Controller,
Integrated Comfort System)
E = TUC Std. Package
F = TUC Std. Package w/Fan & Filter
Status
G = TUC Std. Package w/Low Temp
H = TUC Std. Package w/Low Temp,
Fan & Filter Status
(Pneumatic Control System)
M = Pneumatic Room Control w/
Low Temp
P = Pneumatic Zone Control w/Low
Temp
(TracerT M ZN520,
Standalone System)
Q = Tracer ZN520 Std. Package
R = Tracer ZN520 Std. Package w/
Low Temp
T = Tracer ZN520 Std. Package w/
Time Clock
U = Tracer ZN520 Std. Package w/
Low Temp & Time Clock
(TracerT M ZN520,
Integrated Comfort System)
V = Tracer ZN520 ICS
W = Tracer ZN520 ICS w/Low Temp
X = Tracer ZN520 ICS w/Fan Status
Proof
Y = Tracer ZN520 ICS w/Low Temp &
Fan Status Proof
(End Device Package)
8 = DDC Std. Package
9 = DDC Std. Package w/Low Temp
UV-PRC001-EN
Model Number
Vertical Unit Ventilator
DIGIT 16: HEATING/CHANGE
OVER COIL CONTROL
0 = None/Field Installed Controls
1 = Face & Bypass Damper Only/Field
Installed Controls
2 = Face & Bypass Damper w/2-Pipe
Control
7 = Face & Bypass Damper w/2-Pipe
Control w/Isolation Valve
3 = Face & Bypass Damper w/4-Pipe
Control w/Isolation Valve
4 = Single Stage Electric Heat
5 = Dual Stage Electric Heat
Modulating Spring Return Valve
Two-way Valve Pneumatic
Control Only
D = 1/2-inch Valve, Cv = 1.8
E = 1/2-inch Valve, Cv = 4.6
F = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Two-way Valve DDC Control
8 = 1/2-inch Valve, Cv = 1.8
9 = 1/2-inch Valve, Cv = 4.6
W = 1/2-inch Valve, Cv = 1.8 (A/R/H Coil)
G = 1/2-inch Valve, Cv = 4.6 (A/R/H Coil)
H = 3/4-inch Valve, Cv = 7.3
Modulating Spring Return Valve
Three-way Valve Pneumatic
Control Only
M = 1/2-inch Valve, Cv = 1.8
N= 1/2-inch Valve, Cv = 4.6
P = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Three-way Valve DDC Control
X = 1/2-inch Valve, Cv = 1.8
Y = 1/2-inch Valve, Cv = 4.6
Z = 1/2-inch Valve, Cv = 1.8 (A/R/H Coil)
Q = 1/2-inch Valve, Cv = 4.6 (A/R/H Coil)
R = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Steam Coil
DDC/Pneumatic Controls
T = 1/2-inch Valve, Cv = 1.8
U= 1/2-inch Valve, Cv = 4.6
V = 3/4-inch Valve, Cv = 7.3
UV-PRC001-EN
DIGIT 17: COOLING COIL
CONTROL
0 = None/Field Installed Controls
1 = Single Stage DX Controls
Modulating Spring Return Valve
Two-way Valve Pneumatic
Control Only
D = 1/2-inch Valve, Cv = 1.8
E = 1/2-inch Valve, Cv = 4.6
F = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Two-way Valve DDC Control
W = 1/2-inch Valve, Cv = 1.8
G = 1/2-inch Valve, Cv = 4.6
H = 3/4-inch Valve, Cv = 7.3
Modulating Spring Return Valve
Three-way Valve Pneumatic
Control Only
M = 1/2-inch Valve, Cv = 1.8
N= 1/2-inch Valve, Cv = 4.6
P = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Three-way Valve DDC Control
Z = 1/2-inch Valve, Cv = 1.8
Q = 1/2-inch Valve, Cv = 4.6
R = 3/4-inch Valve, Cv = 7.3
DIGIT 18: DAMPER
CONFIGURATION
0 = Field Installed Damper Actuator
1 = 100% Return Air/No Damper or
Actuator
(Modulating ASHRAE Cycle II)
3 = ERS without Economizer
F = RA/OA Damper and Actuactor (210 VDC)
A = RA/OA Damper and Actuator (3Point Modulating)
E = RA/OA Damper and Actuator
with Exhaust (3-Point Mod)
(Two Position Control)
B = RA/OA Damper and Actuator
(Fix-Min)
C = 100% OA Damper and Actuator
(manual Control)
D = Damper w/Manual Quad Adjust
DIGIT 19: ZONE SENSOR/FAN
SPEED SWITCH
0 = No Sensor; Unit Mtd Manual Fan
Speed Switch
1 = No Sensor; Unit Mtd Concealed
Manual Fan Speed Switch
DDC Control Options-Wall Mtd
Sensor and Speed Switch
A = Sensor w/External Setpoint,
TOV & Cancel, 1-Spd Fan Switch
B = Sensor w/External Setpoint,
TOV & Cancel, 2-Spd Fan Switch
D = Sensor w/Internal Setpoint, 2Spd Fan Switch
DDC Control Options-Unit Mtd
Sensor and Speed Switch
E = Sensor w/External Setpoint, TOV
& Cancel, 1-Spd Fan Switch
F = Sensor w/External Setpoint,
TOV & Cancel, 2-Spd Fan Switch
H = Sensor w/Internal Setpoint, 2Spd Fan Switch
Tracer ZN520 Options-Wall Mtd
Sensor & Speed Switch
T = Sensor w/External Setpoint,
TOV, w/Fan High-Low-Auto-OFF
U = Sensor w/External Setpoint,
TOV, w/Fan Auto-OFF
V = Sensor w/Internal Setpoint, TOV,
w/Fan High-Low-Auto-OFF
W = Sensor w/External Setpoint, w/
Fan High-Low-Auto-OFF
X = Sensor w/ Internal Setpoint, w/
Fan Auto-OFF
Tracer ZN520 Options-Unit Mtd
Sensor & Speed Switch
Y = Sensor w/External Setpoint,
TOV, w/Fan High-Low-Auto-OFF
Z = Sensor, w/External Setpoint,
TOV, w/Fan Auto-OFF
Pneumatic Options-Zone Sensor
& Unit Mtd Manual Fan Spd
5 = Unit Mounted Sensor
6 = Wall Mounted Sensor w/Internal
Setpoint
53
Model Number
Vertical Unit Ventilator
DIGIT 20: INLET ARRANGEMENT
1 = Return-Air Front/Fresh-Air Back
3 = Return-Air Front/Fresh-Air Top
Inlet
4 = 100% Return-Air Front
5 = 100% Fresh-Air Back
6 = 100% Fresh-Air Top Inlet
7 = Dynamic Air Barrier
A = ERS Compatible w/RH
Connection
B = ERS Compatible w/ LH
Connection
DIGIT 21: DISCHARGE
ARRANGEMENT
1 = Bar Grille Discharge
2 = Duct Collar Discharge
3 = Double Deflection Discharge
4 = Bar Grille Discharge w/Wire
Mesh
DIGIT 22: UNIT DEPTH
A = 15 1/4-inch Deep Unit
B = 16 1/4-inch Deep Unit
C = 21 1/4-inch Deep Unit
D = 21 1/4-inch Deep Unit
w/Insulated Horizontal Baffle
E = 21 1/4-inch Deep Unit w/Full
Sheetmetal Back
F = 21 1/4-inch Deep Unit (ERS
Compatible)
G = 15 1/4-inch Deep Unit
w/Insulated Back Panel
DIGIT 23: END COVERS
0 = No End Covers
A = 15 1/4-inch Depth w/o Cutouts
B = 15 1/4-inch Depth
w/3 x 7 1/4-inch Cutouts
C = 15 1/4-inch Depth
w/3 1/4 x 16 7/8-inch Cutouts
D = 16 1/4-inch Depth w/o Cutouts
E = 16 1/4-inch Depth
w/3 x 7 1/4-inch Cutouts
F = 16 1/4-inch Depth
w/3 1/4 x 16 7/8-inch Cutouts
G = 21 1/4-inch Depth w/o Cutouts
H = 21 1/4-inch Depth
w/3 x 7 1/4-inch Cutouts
J = 21 1/4-inch Depth
w/3 1/4 x 16 7/8-inch Cutouts
DIGIT 25: SUBBASE
0 = No Subbase
A = 2-inch Subbase
B = 4-inch Subbase
C = 6-inch Subbase
DIGIT 26: RECESSING FLANGE
0 = No Recessing Flange
1 = Standard Recessing Flange
DIGIT 27: PIPING PACKAGE
0 = No Factory Installed Piping
Package
A = Package 1; Standard Package
B = Package 2; Standard Package w/
Circuit Balancing Valve
C = Package 3; Standard Package w/
Strainer and Circuit Balancing
Valve
DIGIT 32: DDC CONTROL
ACCESSORIES
0 = No Accessories
A = C0-2 Support
B = Wall Mounted Relative Humidity
Sensor
C = Baseboard Heat (ZN520 ONLY)
D = Wall Mounted Relative Humidity
Sensor w/CO-2 Support (TUC
ONLY)
DIGIT 28: CROSSOVER PIPING
0 = No Crossover Piping
1 = 1 3/8-inch Crossover Piping
2 = 2 1/8-inch Crossover Piping
DIGIT 29: FILTER
1 = Throwaway Filter
2 = Permanent/Renewable Polyurethane w/Metal Frame
DIGIT 30: COLOR SELECTION
1 = Std. Deluxe Beige Cabinet
2 = Cameo White Cabinet
3 = Soft Dove Cabinet
4 = Stone Gray Cabinet
5 = Driftwood Gray Cabinet
6 = Rose Mauve Cabinet
7 = Bronzetone Cabinet
DIGIT 31: UL LISTING
0 = Non UL Listed Unit
1 = UL Listed Unit
DIGIT 24: FRONT PANEL
1 = 16 Gauge Front Panel
2 = 14 Gauge Front Panel
54
UV-PRC001-EN
Model Number
Horizontal Unit Ventilator
Horizontal Unit Ventilator
HUV C 125 2 0 A0 AA B 0 0 0 0 0 1 1 A 0 1 0 0 0 0 1 1 1 0
5
DIGIT 1-3: UNIT CONFIGURATION
HUV = Horizontal Unit Ventilator
DIGIT 4: DEVELOPMENT
SEQUENCE
C = Third Generation
DIGIT 5-7: NOMINAL CAPACITY
075 = 750 CFM
100 = 1000 CFM
125 = 1250 CFM
150 = 1500 CFM
200 = 2000 CFM
DIGIT 8: UNIT INCOMING POWER
SUPPLY
1 = 120V/1-Phase Power Supply
2 = 208V/1-Phase Power Supply
3 = 208V/3-Phase Power Supply
4 = 240V/1-Phase Power Supply
5 = 240V/3-Phase Power Supply
6 = 277V/1-Phase Power Supply
8 = 480V/3-Phase 4-Wire Power
Supply
DIGIT 9: PSC MOTOR/
DISCONNECT
0 = Std. Motor, No Disconnect
1 = Std. Motor with Non-Fused
Toggle
2 = Std. Motor with Manual Starter
3 = Std. Motor with Circuit Breaker
(E-Ht)
A = Hi-ESP Motor, No Disconnect
B = Hi-ESP Motor with Non-Fused
Toggle
C = Hi-ESP Motor with Manual
Starter
D = Hi-ESP Motor with Circuit Breaker (E-Ht)
DIGIT 10&11: DESIGN SEQUENCE
E0 = Factory Assigned
10
15
20
DIGIT 12&13: COIL
CONFIGURATION
(Single Coil Options)
AA = 2-Pipe CW/HW Coil
AB = 2-Pipe CW/HW Coil
AC = 2-Pipe CW/HW Coil
AD = 2-Pipe CW/HW Coil
AE = 2-Pipe CW/HW Coil
H1 = 2-Pipe HW Coil
H2 = 2-Pipe HW Coil
H3 = 2-Pipe HW Coil
H4 = 2-Pipe HW Coil
H5 = 2-Pipe HW Coil
H6 = 2-Pipe HW Coil
K1 = 2-Pipe Steam Distributing Coil
K2 = 2-Pipe Steam Distributing Coil
E4 = 4-Element Electric Heat Coil
E6 = 6-Element Electric Heat Coil
E7 = 7-Element Electric Heat Coil
E9 = 9-Element Electric Heat Coil
F0 = 2-Pipe Direct Expansion Coil
(Coupled Coil Options)
DA = 4-Pipe CW/Preheat HW Coil
DC = 4-Pipe CW/Preheat HW Coil
DD = 4-Pipe CW/Preheat HW Coil
DE = 4-Pipe CW/Preheat HW Coil
DK = 4-Pipe CW/Steam Preheat
X3 = 2-Pipe CW/3-Element Preheat
X4 = 2-Pipe CW/4-Element Preheat
X6 = 2-Pipe CW/6-Element Preheat
FA = 4-Pipe DX/HW Preheat Coil
FK = 4-Pipe DX/Preheat Steam Coil
F3 = 2-Pipe DX/3-Element Preheat
F4 = 2-Pipe DX/4-Element Preheat
F6 = 2-Pipe DX/6-Element Preheat
R1 = 4-Pipe CW/Reheat HW Coil
R2 = 4-Pipe CW/Reheat HW Coil
DIGIT 14: COIL CONNECTIONS
(Single Coil Options)
A = Right Hand Supply
B = Left Hand Supply
(Coupled Coil Options)
C = Left Hand Cool/Right Hand Heat
D = Right Hand Cool/Left Hand Heat
UV-PRC001-EN
25
30
DIGIT 15: CONTROL TYPES
0 = None/Field Installed Controls
(Terminal Unit Controller,
Standalone)
A = TUC Std. Package
B = TUC Std. Package w/ Low Temp
C = TUC Std. Package w/Time Clock
D = TUC Std. Package w/Low Temp
& Time Clock
(Terminal Unit Controller,
Integrated Comfort System)
E = TUC Std. Package
F = TUC Std. Package w/Fan & Filter
Status
G = TUC Std. Package w/Low Temp
H = TUC Std. Package w/Low Temp,
Fan & Filter Status
(Pneumatic Control System)
M = Pneumatic Room Control w/
Low Temp
P = Pneumatic Zone Control w/Low
Temp
(Tracer TM ZN520,
Standalone System)
Q = Tracer ZN520 Std. Package
R = Tracer ZN520 Std. Package w/
Low Temp
T = Tracer ZN520 Std. Package w/
Time Clock
U = Tracer ZN520 Std. Package w/
Low Temp & Time Clock
(Tracer TM ZN520,
Integrated Comfort System)
V = Tracer ZN520 ICS
W = Tracer ZN520 ICS w/Low Temp
X = Tracer ZN520 ICS w/Fan Status
Proof
Y = Tracer ZN520 ICS w/Low Temp &
Fan Status Proof
(End Device Package)
8 = DDC Std. Package
9 = DDC Std. Package w/Low Temp
55
Model Number
Horizontal Unit Ventilator
DIGIT 16: HEATING/CHANGE
OVER COIL CONTROL
0 = None/Field Installed Controls
1 = Face & Bypass Damper Only/Field
Installed Controls
2 = Face & Bypass Damper w/2-Pipe
Control
7 = Face & Bypass Damper w/2-Pipe
Control w/Isolation Valve
3 = Face & Bypass Damper w/4-Pipe
Control w/Isolation Valve
4 = Single Stage Electric Heat
5 = Dual Stage Electric Heat
Modulating Spring Return Valve
Two-way Valve Pneumatic
Control Only
D = 1/2-inch Valve, Cv = 1.8
E = 1/2-inch Valve, Cv = 4.6
F = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Two-way Valve DDC Control
8 = 1/2-inch Valve, Cv = 1.8
9 = 1/2-inch Valve, Cv = 4.6
W = 1/2-inch Valve, Cv = 1.8 (A/R/H Coil)
G = 1/2-inch Valve, Cv = 4.6 (A/R/H Coil)
H = 3/4-inch Valve, Cv = 7.3
Modulating Spring Return Valve
Three-way Valve Pneumatic
Control Only
M = 1/2-inch Valve, Cv = 1.8
N= 1/2-inch Valve, Cv = 4.6
P = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Three-way Valve DDC Control
X = 1/2-inch Valve, Cv = 1.8
Y = 1/2-inch Valve, Cv = 4.6
Z = 1/2-inch Valve, Cv = 1.8 (A/R/H Coil)
Q = 1/2-inch Valve, Cv = 4.6 (A/R/H Coil)
R = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Steam Coil
DDC/Pneumatic Controls
T = 1/2-inch Valve, Cv = 1.8
U= 1/2-inch Valve, Cv = 4.6
V = 3/4-inch Valve, Cv = 7.3
56
DIGIT 17: COOLING COIL
CONTROL
0 = None/Field Installed Controls
1 = Single Stage DX Controls
Modulating Spring Return Valve
Two-way Valve Pneumatic
Control Only
D = 1/2-inch Valve, Cv = 1.8
E = 1/2-inch Valve, Cv = 4.6
F = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Two-way Valve DDC Control
W = 1/2-inch Valve, Cv = 1.8
G = 1/2-inch Valve, Cv = 4.6
H = 3/4-inch Valve, Cv = 7.3
Modulating Spring Return Valve
Three-way Valve Pneumatic
Control Only
M = 1/2-inch Valve, Cv = 1.8
N= 1/2-inch Valve, Cv = 4.6
P = 3/4-inch Valve, Cv = 7.3
Three-Point Modulating Valve
Three-way Valve DDC Control
Z = 1/2-inch Valve, Cv = 1.8
Q = 1/2-inch Valve, Cv = 4.6
R = 3/4-inch Valve, Cv = 7.3
DIGIT 18: DAMPER
CONFIGURATION
0 = Field Installed Damper Actuator
1 = 100% Return Air/No Damper or
Actuator
(Modulating ASHRAE Cycle II)
F = RA/OA Damper and Actuator (210 VDC)
A = RA/OA Damper and Actuator (3Point Modulating)
E = RA/OA Damper and Actuator
with Exhaust (3-Point Mod)
(Two Position Control)
B = RA/OA Damper and Actuator
(Fix-Min)
C = 100% OA Damper and Actuator
(manual Control)
D = Damper w/Manual Quad Adjust
DIGIT 19: ZONE SENSOR/FAN
SPEED SWITCH
0 = No Sensor; Unit Mtd Manual Fan
Speed Switch
1 = No Sensor; Unit Mtd Concealed
Manual Fan Speed Switch
DDC Control Options-Wall Mtd
Sensor and Speed Switch
A = Sensor w/External Setpoint,
TOV & Cancel, 1-Spd Fan Switch
B = Sensor w/External Setpoint, TOV
& Cancel, 2-Spd Fan Switch
D = Sensor w/Internal Setpoint, 2Spd Fan Switch
DDC Control Options-Unit Mtd
Sensor and Speed Switch
E = Sensor w/External Setpoint, TOV
& Cancel, 1-Spd Fan Switch
F = Sensor w/External Setpoint, TOV
& Cancel, 2-Spd Fan Switch
H = Sensor w/Internal Setpoint, 2Spd Fan Switch
Tracer ZN520 Options-Wall Mtd
Sensor & Speed Switch
T = Sensor w/External Setpoint,
TOV, w/Fan High-Low-Auto-OFF
U = Sensor w/External Setpoint,
TOV, w/Fan Auto-OFF
V = Sensor w/Internal Setpoint, TOV,
w/Fan High-Low-Auto-OFF
W = Sensor w/External Setpoint, w/
Fan High-Low-Auto-OFF
X = Sensor w/ Internal Setpoint, w/
Fan Auto-OFF
Tracer ZN520 Options-Unit Mtd
Sensor & Speed Switch
Y = Sensor w/External Setpoint,
TOV, w/Fan High-Low-Auto-OFF
Z = Sensor, w/External Setpoint,
TOV, w/Fan Auto-OFF
Pneumatic Options-Zone Sensor
& Unit Mtd Manual Fan Spd
5 = Unit Mounted Sensor
6 = Wall Mounted Sensor w/Internal
Setpoint
UV-PRC001-EN
Model Number
Horizontal Unit Ventilator
DIGIT 20: INLET ARRANGEMENT
A = FA Duct Top/RA Duct Lower
Back
B = FA Duct Top/RA Duct Bottom
C = FA Duct Top/RA Bar Grille Bottom
D = FA Duct Top/RA Open Bottom
E = 100% FA Duct Top
F = FA Duct Upper Back/RA Duct
Lower Back
G = FA Duct Upper Back/RA Duct
Bottom
H = FA Duct Upper Back/RA Bar
Grille Bottom
J = FA Duct Upper Back/RA Open
Bottom (no grille)
K = 100% FA Duct Upper Back
L = 100% RA Duct Lower Back
M = 100% RA Duct Bottom
N = 100% RA Bar Grille Bottom
P = 100% RA Open Bottom (no grille)
DIGIT 21: DISCHARGE
ARRANGEMENT
1 = Bar Grille Discharge
2 = Duct Collar Discharge 7 1/8-inch
from Top
3 = Duct Collar Discharge 3/4-inch
from Top
4 = Duct Collar Discharge 3 5/8-inch
from Top
5 = Double Deflection Grille
Discharge
6 = Double Deflection Opening Only
(no grille)
7 = Bottom w/Double Deflection
Grille
UV-PRC001-EN
DIGIT 22: UNIT ACCESS PANEL
0 = Std. Horizontal Access Panel
1 = Safety Chain/Std. Access Panel
2 = Removable Access Panel
3 = Safety Chain/Removable
Access Panel
DIGIT 23: RECESSING FLANGE
0 = No Recessing Flange
1 = Standard Recessing Flange
DIGIT 24: PIPING PACKAGE
0 = No Factory Installed Piping
Package
A = Package 1; Standard Package
B = Package 2; Standard Package w/
Circuit Balancing Valve
C = Package 3; Standard Package w/
Strainer and Circuit Balancing
Valve
DIGIT 25: FILTER
1 = Throwaway Filter
2 = Permanent/Renewable Polyurethane w/Metal Frame
DIGIT 26: COLOR SELECTION
1 = Std. Deluxe Beige Cabinet
2 = Cameo White Cabinet
3 = Soft Dove Cabinet
4 = Stone Gray Cabinet
5 = Driftwood Gray Cabinet
6 = Rose Mauve Cabinet
7 = Bronzetone Cabinet
DIGIT 27: UL LISTING
0 = Non UL Listed Unit
1 = UL Listed Unit
DIGIT 28: DDC CONTROL
ACCESSORIES
0 = No Accessories
A = C0-2 Support
B = Wall Mounted Relative Humidity
Sensor
C = Baseboard Heat (ZN520 ONLY)
D = Wall Mounted Relative Humidity
Sensor w/CO-2 Support (TUC ONLY)
57
Model Number
Energy Recovery System
Energy Recovery Unit Ventilator
ERS A 050 2 0 A0 0 A 1 2 1 0 0 CA
5
DIGIT 1-3: UNIT CONFIGURATION
ERS = Energy Recovery System
DIGIT 4: DEVELOPMENT
SEQUENCE
A = First Generation
DIGIT 5-7: NOMINAL CAPACITY
050 = 500 CFM
DIGIT 8: UNIT INCOMING POWER
SUPPLY
1 = 120V/1-Phase Power Supply
2 = 208V/1-Phase Power Supply
3 = 240V/1-Phase Power Supply
4 = 277V/1-Phase Power Supply
DIGIT 9: ETL LISTING
0 = No ETL Listing
1 = ETL Listing
DIGIT 10&11: DESIGN SEQUENCE
BO = Factory Assigned
DIGIT 12: ELECTRIC DEFROST
0 = None
2 = 1.00 kW 208V/1-Phase
3 = 2.00 kW 208V/1-Phase
4 = 2.44 kW 208V/1-Phase
5 = 1.07 kW 240V/1-Phase
6 = 2.00 kW 240V/1-Phase
7 = 3.25 kW 240V/1-Phase
8 = 1.42 kW 277V/1-Phase
9 = 2.73 kW 277V/1-Phase
A = 3.25 kW 277V/1-Phase
58
10
15
DIGIT 13: SUPPLY-AIR INLET to
UNIT VENT
A = LH Inlet to UV (4-Pipe, Pipe
Chase)
B = RH Inlet to UV (4-Pipe, Pipe
Chase)
C = LH Inlet to UV (2-Pipe, Pipe
Chase)
D = RH Inlet to UV (2-Pipe, Pipe
Chase)
DIGIT 14: DAMPER
CONFIGURATION
0 = No Damper
1 = Backdraft Damper on Exhaust
2 = Shut-Off Damper on Supply
3 = Backdraft Damper on Exhaust &
Shut-Off Damper on Supply
DIGIT 15: Controls
1 = Field Supplied/End Device
2 = Field Supplied w/Economizer
3 = DDC Controls
DIGIT 16: SUPPLY-AIR FILTER
SIZE
2 = 1-inch Pleated Media (Std.)
DIGIT 17: COLOR SELECTION
1 = Std. Deluxe Beige
2 = Cameo White
3 = Soft Dove
4 = Stone Grey
5 = Driftwood Grey
6 = Rose Mauve
7 = Bronze Tone
20
DIGIT 18: END COVER
0 = No End Cover
A = 21 1/4-inch Deep w/o Cutouts
B = 21 1/4-inch Deep w/Std. Cutouts
(2-pipe)
C = 21 1/4-inch Deep w/Extended
Cutouts (4-pipe)
DIGIT 19: SUBBASE
0 = No Unit Subbase
A = 2-inch Subbase
B = 4-inch Subbase
C = 6-inch Subbase
DIGIT 20: OPEN DIGIT
0 = Open Digit
DIGIT 21: WALL BOX and WALL
BOX FINISH
00 = No Wallbox
CA = Clear Anodized Finish
LB = Light Bronze Finish
MB = Medium Bronze Finish
DB = Dark Bronze Finish
B1 = Brick (BR1) Finish
B3 = Brick (BR3) Finish
B5 = Brick (BR5) Finish
WH = White Finish
BL = Black Finish
UV-PRC001-EN
General
Data
Table 22: Weights & Measurements: Vertical Unit Ventilator
075
100
125
150
Unit Length w/o End Covers
Unit Size
69”
81”
93”
105”
Unit Height (Standard)
30”
30”
30”
30”
Unit Height (w/ 2” Subbase)
32”
32”
32”
32”
Unit Height (w/ 4” Subbase)
34”
34”
34”
34”
Unit Height (w/ 6” Subbase)
36”
36”
36”
36”
Unit Depth (Standard)
15 1/4”
15 1/4”
15 1/4”
15 1/4”
Unit Depth (1” Falseback)
16 1/4”
16 1/4”
16 1/4”
16 1/4”
Unit Depth (6” Falseback)
21 1/4”
21 1/4”
21 1/4”
21 1/4”
Shipping Weight (lbs.)
Filter Size (inches-actual)
Filter Size (dynamic-air) inches
320
405
450
470
41 1/2 x 13 3/8 x 1
53 1/2 x 13 3/8 x 1
65 1/2 x 13 3/8 x 1
77 1/2 x 13 3/8 x 1
(2) 5 1/2 x 64 1/2 x 3/4
(2) 5 1/2 x 76 1/2 x 3/4
(2) 5 1/2 x 40 1/2 x 3/4 (2) 5 1/2 x 52 1/2 x 3/4
Table 23: Weights & Measurements: Horizontal Unit Ventilators
075
100
125
150
200
Unit Length
Unit Size
70 1/4”
82 1/4”
94 1/4”
106 1/4”
106 1/4”
Unit Height
16 5/8”
16 5/8”
16 5/8”
16 5/8”
17 5/8”
Unit Width (Front Discharge)
35 5/8”
35 5/8”
35 5/8”
35 5/8”
43 1/8”
Unit Width (Bottom Discharge)
48 3/4”
48 3/4”
48 3/4”
48 3/4”
57 1/4”
Shipping Weight (lbs.) *
340*
375*
435*
500*
600*
Filter Size (inches-actual)
41 1/2 x 15 1/4 x 1
53 1/2 x 15 1/4 x 1
65 1/2 x 15 1/4 x 1
77 1/2 x 15 1/4 x 1
77 1/2 x 15 1/4 x 1
*Working weight is approximately 10% less than shipping weight.
*Trane recommends 1/4-inch rods for hanging suspension.
Table 24: Standard Motor Data (Typical for AA Coil)
Unit Size
Volts
RPM
(Nominal)
CFM
(Nominal)
Amps
(FLA)
Watts
HP
075
115/60/1
1075
750
2.3
222
1/6
100
115/60/1
1075
1000
2.3
222
1/6
125
115/60/1
1075
1250
2.6
287
1/4
150
115/60/1
1075
1500
2.6
287
1/4
200
115/60/1
940
2000
5.7
639
1/3
Table 25: Hi-ESP Motor Data (Typical for AA Coil)
Unit Size
Volts
RPM
(Nominal)
CFM
(Nominal)
Amps
(FLA)
Watts
HP
075
115/60/1
1360
750
4.8
597
1/3
100
115/60/1
1360
1000
4.8
597
1/3
125
115/60/1
1410
1250
7.0
844
1/2
150
115/60/1
1410
1500
7.0
844
1/2
200
115/60/1
1140
2000
8.1
936
3/4
UV-PRC001-EN
59
General
Data
Table 26: Coil Volume (Gallons)
60
Coil Type
Unit Size
Volume (Ga.)
AA,AB
075
0.72
AA,AB
100
0.85
AA,AB
125
0.99
AA,AB
150-200
1.57
AC
075
0.97
AC
100
1.17
AC
125
1.40
AC
150-200
2.27
AD & AE
075
1.25
AD & AE
100
1.51
AD & AE
125
1.80
AD & AE
150-200
2.96
DA-DC
075
0.86
DA-DC
100
0.98
DA-DC
125
1.13
DA-DC
150-200
1.71
DD-DE
075
1.11
DD-DE
100
1.30
DD-DE
125
1.53
DD-DE
150-200
2.39
DK
075
0.97
DK
100
1.17
DK
125
1.39
DK
150-200
2.25
H1-H3
075
0.24
H1-H3
100
0.30
H1-H3
125
0.35
H1-H3
150-200
0.68
H4-H6
075
0.72
H4-H6
100
0.85
H4-H6
125
0.99
H4-H6
150-200
1.57
R1-R2
075
1.21
R1-R2
100
1.47
R1-R2
125
1.73
R1-R2
150-200
2.94
X3-X6
075
0.97
X3-X6
100
1.17
X3-X6
125
0.99
X3-X6
150-200
2.26
UV-PRC001-EN
General
Data
Table 27: Coil Area
Unit Size
Length
(inch)
Width
(inch)
Face Area
(Square-inch)
075
42
12
504
100
54
12
648
125
66
12
792
150
78
12
936
200
78
12
936
Table 28: Basic comments about the classroom unit ventilator
Model Number Designation
Digit 8: Unit Incoming Power
What you should know about this designation...
1 Classroom unit ventilators that contain an electric heat coil are only available with a 3-phase power
supply selection.
2 All unit power connections are in the left hand end pocket of the unit ventilator with an exception to
units that contain an electric heat selection. The power connection for the electric heat option is located
in the right hand end pocket.
3 A 120V incoming power is not available with an electric heat selection.
4 An incoming power of 480V/3-phase, 4-wire selection indicates that the building must contain a neutral
wire in addition to an equipment ground.
Digit 9: PSC Motor/Disconnect 1 A non-fused toggle disconnect is not considered to be a true service disconnect because of its location
inside the left hand end pocket of the cabinet (i.e. not located somewhere on the outside of the unit).
This disconnect works similar to a light switch, in that it is convenient for turning off the unit when
cleaning or performing other minor maintenance to the unit ventilator.
2 For electric heat units, a unit circuit breaker is available. This disconnect is located in the right hand
end pocket of the unit ventilator.
3 All unit transformers are internally fused for basic unit protection. This eliminates the need for a circuit
breaker for non-electric heat units.
4 Hi-static (HI-ESP) motors should only be applied to ducted units that require an ESP above .15" of water.
Digit 12&13: Coil Configuration 1 The A-style (2-pipe auto changeover) and H-style (2-pipe hot water) coils contain 3/4-inch headers and
piping. These coils are available with valve, or face and bypass economizing control.
2 The K-style (steam) coils are available with face and bypass control ONLY (an isolation valve is optional). Valve control is not available when ordering the K-style coil due to stratification and flooding during
operation. Factory piping for the steam coil selections are not provided.
3 The E-style (electric heat ONLY) coils are provided with right hand connections. This coil selection is
not available in a 120V incoming power option. Face and bypass is not provided with the E-style coil
because of possible damage to the elements and overheating hazards.
4 The F0-style (direct expansion) coil is provided with a left hand connection ONLY. Face and bypass is
not available with the F0 coil option.
5 The DA-DE (4-pipe) coils are available with a left cool/right heat connection, or vise-versa. The connections are opposite end connections (NOT same-side connections). The cooling side of the coil is considered the "main" coil connection …it is a 3/4-inch piping connection. The heating side of the coil is
considered the "auxiliary" coil connection …it is a 1/2-inch piping connection. Face and bypass control
with an isolation valve is available on the DA-DE coils. Modulating valve control is also available with
the DA-DE coil selection …but face and bypass with valve modulation isolation is not a valid option.
6 The vertical unit with DK (2-pipe CW/Steam preheat) coil selection is available with valve control…face
and bypass is not allowed. The horizontal unit with DK coils may have valve control or face and bypass.
7 The X3-X6 (2-pipe CW/electric heat) coil selections are available as a left hand cool/right hand heat
ONLY. Face & bypass is not available with the X3-X6 coil selections.
8 The FA, FK and F3-F6 coil selections are available with a left hand cool/right hand heat ONLY. Face and
bypass is not valid with these coil selections.
9 The R-style (reheat) coil selections are available with dehumidification control. Face and bypass is not
available when selecting the reheat coil selections.
UV-PRC001-EN
61
General
Data
Model Number Designation
Digit 14: Coil Connections
What you should know about this designation...
1 Opposite-end coil piping connections are provided when selecting the 4-pipe or coupled coil option.
Same-side coil connections are not provided from Trane.
2 If a cooling coil is selected in DIGIT 12, the drain pan slopes toward the cooling coils piping connection.
Digit 15: Unit Controls
TUC and ZN520 Controls
1 If DDC (TUC or ZN520) controls are selected, the coil control valves and actuators must be ordered from
the factory. This is to ensure that the system hardware is capable of working intimately with the controller to allow the system to function properly.
2 Fan and filter status is available when selecting the Integrated Comfort System ONLY. Standalone controls do not contain a device for status report for this option.
3 All internal sensors are provided in the unit if factory mounted DDC controls are selected.
Pneumatic Controls
1 Pneumatic controls are available with face and bypass coil control with exception of 4-pipe and steam
coil selections. This is due to the need for isolation valve control for the coils …which is not available
on a pneumatic system.
2 Because the pneumatic package is factory calibrated from Johnson Controls ® , an end-device is not
possible.
End Device Controls
1 The end device control package is available with factory wired valves, actuators and freeze-stat (but
not required). A 24-volt transformer and a start/stop relay is provided with this control option.
2 Face and bypass is not a selectable option with the end device package because of terminal strip wiring
limitations.
3 Trane zone sensors will not be provided with this control option.
4 DX, electric heat, and steam coils will not be allowed when selecting end device controls.
5 Crossover piping is not allowed when selecting end device controls.
Digit 16: Cooling Coil Control
1 The face and bypass selection (Digit 16 = 2,3,4,5,7) is allowed with the TUC and ZN520 controls ONLY.
All E, F, X, R and DK-style coils are not available with the face and bypass selection.
2 Isolation valves may be factory piped or shipped loose to the job site. They are of open or closed operation ONLY. Modulating valves are not available. The valves spring return to their "normal" or nonenergized state (either normally open for heating, or normally closed for cooling).
3 Valve control for pneumatic controls is provided when Digit 16 = D,E,F,M,N,P. The valves may be factory piped, or shipped loose.
4 Valve control for TUC, ZN520 and end device controls is provided when Digit 16 = 8,9,W,G,H,X,Y,Z,Q,R.
The valves may be factory piped, or shipped loose.
5 Valve control for steam coils are provided when Digit 16 = T,U,V. These valves are shipped loose ONLY,
and are used with TUC, ZN520, end device and pneumatic controls.
Digit 17: Heating Coil Control
1 Single stage DX control (Digit 17 = 1) is allowed with the TUC and ZN520 controls ONLY.
2 Isolation valves may be factory piped or shipped loose to the job site. They are of open or closed operation ONLY. Modulating valves are not available. The valves spring return to their "normal" or nonenergized state (either normally open for heating, or normally closed for cooling).
3 Valve control for pneumatic controls is provided when Digit 17 = D,E,F,M,N,P. The valves may be factory piped, or shipped loose.
4 Valve control for TUC, ZN520 and end device controls is provided when Digit 17 = W,G,H,Z,Q,R. The
valves may be factory piped, or shipped loose.
Digit 18: Damper Configuration 1 The 2-10 VDC and 3-point modulating actuator (Digit 18 = F, A, E) is only available when selecting end
device controls.
2 2-position damper control (Digit 18 = B,C) is only available when selecting TUC or ZN520 controls.
3 The manual quadrant adjust damper control (Digit 18 = D) remains in a fixed position. The unit must
be physically opened, and manually adjusted to a new position.
62
UV-PRC001-EN
General
Data
Model Number Designation
Digit 19: Zone Sensor/Fan
Speed Switch
What you should know about this designation...
1 The concealed, or rotated fan speed switch (Digit 19 = 1) is adjustable via the unit front panel. By selecting a unit ventilator with a ducted discharge, the fan speed switch must be ordered as concealed.
Because the unit is ducted (not grilled), the user will be unable to adjust the "non-rotated" switch.
Therefore, the switch must be rotated towards the unit front panel for panel removal, and switch adjustment. Unit ventilators ordered with Digit 19 as 0 or 1 must contain field installed/end device controls.
2 Unit ventilators with TUC controls utilize sensors A-H.
3 Unit ventilators with ZN520 controls utilize sensors T-Z.
4 Unit ventilators with Pneumatic controls utilize sensors 5 & 6.
5 Steam coils are not compatible with unit mounted sensors (Digit 19 = E,F,H,Y,Z,5) because of the radiant heat that is produced by these coils may shorten the sensor life.
Digit 20: Inlet Arrangement
1 When selecting an inlet arrangement, specify a compatible damper configuration (Digit 18) for unit to
function properly. (Example: If Digit 20 = 4 (100% RA front), then Digit 18 must = 1 (100% return, no
damper or actuator).
2 A unit that contains a dynamic air barrier inlet (Digit 20 = 7), allows the return-air to be brought into the
back of the unit ventilator above the outside-air section. Because of the space limitations in the unit
with the dynamic air selection, the face and bypass (economizing) option will not be available.
3 A unit that contains a ERS compatible inlet (Digit 20 = A,B), allows the unit ventilator to be prewired
with a crossover to run cohesively with an energy recovery system .
Digit 27: Piping Packages
1 A valve must be selected (Digit 15 and 16) for unit to contain factory piping. These packages are built
and optimized with 2-way or 3-way valves.
2 Piping packages C and D are only available with the modulating valve selections. Isolation valves (Digit
16 = 2,3,7 are not available with piping packages C and D.
Digit 28: Crossover Piping
1 Crossover piping is only available on vertical unit ventilators.
2 The crossover selection is not available with the following coils (FA,X3,X4,X6,K1,K2,FK).
Digit 32: DDC Control
Accessories
UV-PRC001-EN
1 Unit ventilators that contain reheat coil (Digit 12 = R1,R2) and TUC controls must contain the wall
mounted relative humidity sensor (option B or D) in Digit 32 for proper functionality.
63
General Data
Horizontal Inlet Arrangements
Inlet Arrangements
64
UV-PRC001-EN
General Data
Vertical Inlet Arrangements
Inlet Arrangements
UV-PRC001-EN
65
General Data
Vertical/Horizontal Discharge
Discharge Arrangements
66
UV-PRC001-EN
Performance Data
Acoustic Ratings
Tables S1 and S2 reflect sound power ratings for the vertical and horizontal classroom unit ventilator. To calculate the noise criteria (NC) for a unit, subtract the actual room effect from the sound power number in each
octave band. These numbers may be graphed on a NC chart. Note: Because room affects vary greatly, request
exact numbers per the specific job from the design engineer. By obtaining these exact numbers, the most accurate results of the installed unit may be calculated.
Data obtained in the reverberant rooms conforming to ANSI S12.31 and ANSI S12.32
Table S1: Vertical octave band sound power ratings (sound power in db ref: 10-12 watts)
Octave Band
1
2
3
4
5
6
7
8
Center of Frequency
63
125
250
500
1000
2000
4000
8000
075 High Speed
61
68
65
53
56
52
48
43
075 Low Speed
57
67
60
55
51
47
42
34
100 High Speed
62
68
65
60
56
53
48
41
100 Low Speed
52
65
57
52
47
43
35
25
125 High Speed
61
69
66
62
56
53
48
41
125 Low Speed
55
64
60
56
50
47
40
31
150 High Speed
62
75
67
63
57
53
49
40
150 Low Speed
54
70
60
56
49
44
37
29
Table S2: Horizontal octave band sound power ratings (sound power in db ref: 10-12 watts)
Octave Band
1
2
3
4
5
6
7
8
Center of Frequency
63
125
250
500
1000
2000
4000
8000
075 High Speed
66
67
61
60
56
53
48
41
075 Low Speed
62
64
58
57
52
49
43
35
100 High Speed
66
67
61
60
56
52
48
41
100 Low Speed
59
61
55
54
43
45
38
29
125 High Speed
70
71
65
64
60
56
51
44
125 Low Speed
65
67
61
62
55
50
44
36
150 High Speed
65
68
62
60
56
52
45
38
150 Low Speed
57
63
54
53
47
42
33
25
200 High Speed
73
75
68
64
60
57
53
45
200 Low Speed
64
74
59
60
49
45
37
29
Table S3: Inlet grille free area
Unit Size
Vertical Minimum Free Area
Horizontal Minimum Free Area
Outlet
Sq. In.
Inlet
Sq. In.
Outlet
Sq. In.
Inlet
Sq. In.
075
290
113
232
144
100
370
145
296
192
125
450
188
364
240
150 and 200
530
210
430
288
UV-PRC001-EN
67
Performance Data
Vertical Cfg. (A-Coil/D-Coil)
Table P1: VUV; 2-pipe coil with free discharge
VUV
Size
075
100
125
150
Coil
Type
CFM
AA
AB
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
Watt
835
18.5
14.8
3.70
1.5
50.4
2.52
0.6
170
800
22.3
16.7
4.46
2.1
56.5
2.83
0.8
170
AC
800
28.4
19.3
5.67
4.7
63.0
3.15
1.3
170
AD
760
24.1
17.5
4.82
0.9
65.8
3.29
0.4
160
AE
710
25.6
17.5
5.12
1.0
67.5
3.37
0.4
160
AA
1085
26.3
19.6
5.27
3.4
66.8
3.34
1.2
205
AB
1050
30.2
21.7
6.03
4.4
75.4
3.77
1.5
205
AC
1040
36.9
24.7
7.37
9.0
82.8
4.14
2.6
205
AD
1005
35.8
24.3
7.16
2.2
88.7
4.44
0.8
205
AE
950
37.3
24.4
7.45
2.3
91.9
4.59
0.8
205
AA
1275
34.1
25.6
6.81
6.3
80.5
4.03
2.0
230
AB
1235
38.8
27.9
7.76
7.9
90.9
4.55
2.5
230
AC
1230
42.0
29.0
8.40
4.7
97.6
4.88
1.5
230
AD
1265
49.3
32.6
9.86
4.4
112.6
5.63
1.3
260
AE
1190
50.1
32.1
10.01
4.5
116.0
5.80
1.4
260
AA
1655
42.4
30.5
8.49
10.6
102.7
5.13
3.5
290
AB
1595
47.5
33.0
9.50
12.9
115.8
5.79
4.3
290
AC
1585
53.0
35.4
10.61
8.0
124.4
6.22
2.5
290
AD
1530
59.6
38.4
11.93
6.9
136.7
6.84
2.1
280
AE
1455
61.3
38.5
12.26
7.2
142.2
7.11
2.3
280
Table P2: VUV; 4-pipe coil with free discharge
VUV
Size
075
100
125
150
68
Coil
Type
CFM
DA
DC
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
Watt
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
800
17.4
13.9
3.47
1.4
50.6
2.53
0.5
170
760
21.3
15.9
4.27
2.0
55.6
2.78
0.6
160
DD
760
27.4
18.6
5.49
4.4
48.7
2.44
0.5
160
DE
710
28.2
18.8
5.64
4.7
52.8
2.64
0.6
160
DA
1040
25.6
18.9
5.11
3.3
67.0
3.35
1.0
205
DC
1005
29.1
20.9
5.82
4.1
74.6
3.73
1.2
205
DD
1005
35.9
23.9
7.17
8.5
65.4
3.27
0.9
205
DE
950
37.0
24.5
7.41
9.0
70.3
3.51
1.1
205
DA
1230
32.8
24.5
6.56
5.9
81.2
4.06
1.6
230
DC
1265
38.6
27.7
7.72
7.9
94.5
4.73
2.1
260
DD
1265
42.8
29.6
8.56
5.1
82.8
4.14
1.6
260
DE
1190
44.1
30.1
8.82
5.6
90.3
4.51
1.9
260
DA
1585
41.4
29.6
8.28
10.1
103.1
5.15
2.6
290
DC
1530
46.3
32.1
9.26
12.3
114.8
5.74
3.2
280
DD
1530
51.9
34.6
10.37
8.0
100.5
5.03
2.5
280
DE
1455
54.1
35.7
10.83
9.0
110.6
5.53
3.0
280
UV-PRC001-EN
Performance Data
Vertical Cfg. (A-Coil/D-Coil)
Table P3: VUV; 2-pipe coil with high static motor
VUV
Size
075
100
125
150
Coil
Type
CFM
AA
AB
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
Watt
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
805
18.0
14.4
3.61
1.5
49.1
2.45
0.6
330
785
22.1
16.5
4.42
2.1
55.7
2.79
0.8
330
AC
785
28.3
19.2
5.66
4.7
62.0
3.10
1.3
330
AD
870
28.8
20.6
5.77
1.3
73.6
3.68
0.5
380
AE
830
31.1
21.0
6.23
1.5
77.4
3.87
0.5
380
AA
1005
25.8
19.1
5.16
3.3
63.3
3.16
1.1
430
AB
980
29.2
20.9
5.84
4.1
71.7
3.58
1.4
430
AC
980
36.0
24.0
7.19
8.6
79.1
3.95
2.4
430
AD
1055
37.8
25.7
7.57
2.4
92.3
4.62
0.8
465
AE
1010
40.0
26.2
8.00
2.7
96.9
4.84
0.9
465
AA
1365
36.4
27.6
7.29
7.1
84.5
4.22
2.2
530
AB
1335
41.3
29.8
8.25
8.8
96.3
4.81
2.8
530
AC
1330
45.6
31.8
9.12
5.5
103.6
5.18
1.6
530
AD
1300
50.7
33.6
10.14
4.6
115.1
5.75
1.4
520
AE
1250
53.3
34.2
10.65
5.1
121.0
6.05
1.5
510
AA
1550
43.1
31.0
8.62
10.9
98.1
4.90
3.2
565
AB
1525
47.6
33.1
9.51
12.9
112.1
5.60
4.1
565
AC
1520
53.2
35.5
10.64
8.1
120.4
6.02
2.4
565
AD
1490
60.8
39.3
12.16
7.1
133.8
6.69
2.0
565
AE
1805
76.5
48.5
15.30
10.8
170.9
8.54
3.2
680
Table P4: VUV; 4-pipe coil with high static motor
VUV
Size
075
100
125
150
UV-PRC001-EN
Coil
Type
CFM
DA
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
Watt
785
17.3
13.8
3.46
1.4
49.9
2.49
0.5
330
DC
870
24.2
18.2
4.84
2.5
61.4
3.07
0.8
380
DD
870
30.7
21.0
6.14
5.4
53.6
2.68
0.6
380
DE
830
32.4
21.7
6.47
5.9
59.3
2.97
0.7
380
DA
980
24.9
18.4
4.98
3.1
64.2
3.21
0.9
430
DC
1055
30.5
21.9
6.10
4.5
77.3
3.87
1.3
465
DD
1055
37.4
25.1
7.49
9.2
67.7
3.39
1.0
465
DE
1010
39.3
26.0
7.86
10.0
73.6
3.68
1.2
465
DA
1330
35.2
26.6
7.05
6.7
85.8
4.29
1.7
530
DC
1300
39.6
28.5
7.92
8.2
96.5
4.82
2.2
520
DD
1300
43.9
30.4
8.77
5.3
84.4
4.22
1.7
520
DE
1250
46.7
32.0
9.34
6.2
93.7
4.68
2.0
510
DA
1520
41.5
29.7
8.30
10.2
100.1
5.00
2.5
565
DC
1490
47.1
32.8
9.42
12.7
112.6
5.63
3.1
565
DD
1490
52.8
35.2
10.55
8.3
98.6
4.93
2.4
565
DE
1805
66.4
44.4
13.28
13.0
129.5
6.48
4.0
680
69
Performance Data
Horizontal Cfg. (A-Coil)
Table P5: HUV; 2-pipe coil with free discharge
VUV
Size
075
100
125
150
200
70
Coil
Type
CFM
AA
AB
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
GPM
WPD
TMBH
GPM
WPD
Watt
15.3
3.8
1.6
52.0
2.60
0.7
160
16.2
4.22
1.9
57.8
2.89
0.8
160
27.9
19.2
5.58
4.6
63.9
3.19
1.4
160
21.0
16.6
4.20
0.7
67.2
3.36
0.4
160
760
19.9
15.5
3.97
0.6
71.7
3.58
0.5
160
AA
1090
25.6
19.0
5.13
3.3
67.0
3.35
1.2
210
AB
1030
27.7
20.0
5.54
3.8
74.4
3.72
1.5
210
AC
1025
34.6
23.1
6.93
8.0
81.9
4.09
2.5
210
AD
975
31.0
21.4
6.19
1.7
86.6
4.33
0.7
210
TMBH
SMBH
875
19.0
825
21.1
AC
815
AD
780
AE
AE
1015
31.7
21.6
6.35
1.8
97.3
4.87
0.9
210
AA
1240
34.1
25.5
6.82
6.3
79.0
3.95
1.9
225
AB
1300
38.5
27.7
7.69
7.8
94.4
4.72
2.7
240
AC
1290
43.2
30.0
8.65
5.0
101.2
5.06
1.6
240
AD
1240
47.1
31.4
9.42
4.0
110.7
5.54
1.3
240
AE
1265
47.1
31.0
9.43
4.1
122.3
6.11
1.6
265
AA
1600
42.9
31.7
8.58
10.8
100.3
5.01
3.3
260
AB
1525
44.9
31.8
8.98
11.7
112.1
5.60
4.1
260
AC
1510
51.0
34.3
10.20
7.5
119.9
5.99
2.4
260
AD
1600
56.9
36.9
11.39
6.3
141.8
7.09
2.3
295
AE
1485
55.3
35.3
11.06
6.0
144.8
7.24
2.3
295
AA
2085
51.1
38.9
10.23
14.7
120.0
6.00
4.6
570
AB
1985
56.3
40.9
11.27
17.5
135.4
6.77
5.7
560
AC
1970
63.9
44.1
12.77
11.2
146.4
7.32
3.4
560
AD
1885
71.0
46.8
14.20
9.5
161.7
8.08
2.9
540
AE
1785
68.6
44.3
13.73
8.9
169.3
8.47
3.1
530
UV-PRC001-EN
Performance Data
Horizontal Cfg. (D-Coil)
Table P6: HUV; 4-pipe coil with free discharge
VUV
Size
075
100
125
150
200
UV-PRC001-EN
Coil
Type
CFM
DA
DC
DD
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
Watt
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
815
18.1
14.5
3.63
1.5
51.2
2.56
0.5
160
780
20.3
15.6
4.06
1.8
56.7
2.83
0.7
160
780
27.1
18.6
5.42
4.3
49.7
2.48
0.5
160
DE
760
27.7
18.7
5.54
4.5
55.6
2.78
0.6
160
DA
1025
24.7
18.2
4.95
3.1
66.3
3.32
1.0
210
DC
975
26.3
18.9
5.25
3.4
73.0
3.65
1.2
210
DD
975
33.3
22.1
6.66
7.5
64.0
3.20
0.9
210
DE
1015
35.5
23.4
7.09
8.4
73.9
3.69
1.2
210
DA
1290
34.7
26.0
6.93
6.5
84.0
4.20
1.7
240
DC
1240
37.6
27.1
7.52
7.5
93.1
4.66
2.0
240
DD
1240
42.4
29.4
8.48
5.0
81.6
4.08
1.6
240
DE
1265
45.3
31.0
9.06
5.8
94.5
4.73
2.1
265
DA
1510
41.0
30.0
8.20
9.9
99.6
4.98
2.5
260
DC
1600
44.9
31.8
8.98
11.7
118.6
5.93
3.4
295
DD
1600
51.1
34.4
10.23
7.8
103.7
5.19
2.7
295
DE
1485
52.9
35.2
10.58
8.6
112.3
5.61
3.1
295
DA
1970
49.6
37.6
9.93
13.9
119.8
5.99
3.5
560
DC
1885
54.8
39.7
10.96
16.6
133.6
6.68
4.3
540
DD
1885
62.4
42.9
12.47
11.2
116.2
5.81
3.3
540
DE
1785
64.8
43.8
12.96
12.5
128.5
6.43
4.0
530
71
Performance Data
Horizontal Cfg. (A-Coil)
Table P7: HUV; 2-pipe coil with high static motor
VUV
Size
075
100
125
150
200
72
Coil
Type
CFM
AA
AB
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
Watt
780
17.3
13.9
3.47
1.4
48.0
2.40
0.6
305
760
19.7
15.1
3.93
1.7
54.4
2.72
0.7
305
AC
755
26.3
18.0
5.25
4.1
60.2
3.01
1.2
305
AD
740
18.9
15.3
3.78
0.6
64.2
3.21
0.4
305
AE
795
22.2
16.8
4.44
0.8
74.5
3.73
0.5
335
AA
1115
28.5
21.3
5.70
3.9
68.0
3.40
1.3
500
AB
1090
31.4
22.8
6.29
4.7
77.5
3.88
1.6
500
AC
1085
39.1
26.4
7.83
10.0
85.5
4.28
2.7
500
AD
1055
37.4
25.9
7.49
2.4
92.4
4.62
0.8
500
AE
1005
36.0
24.4
7.20
2.2
96.4
4.82
0.9
480
AA
1255
35.0
26.3
7.01
6.6
79.6
3.98
2.0
470
AB
1225
38.1
27.5
7.62
7.7
90.4
4.52
2.5
470
AC
1220
42.8
29.7
8.57
4.9
96.9
4.85
1.4
470
AD
1350
51.6
34.6
10.32
4.8
118.7
5.93
1.5
525
AE
1295
50.0
32.9
10.00
4.5
124.8
6.24
1.6
525
AA
1490
38.7
28.1
7.73
9.0
95.4
4.77
3.1
550
AB
1450
41.2
29.0
8.23
10.0
108.0
5.40
3.8
550
AC
1445
46.9
31.3
9.38
6.5
115.8
5.79
2.2
550
AD
1715
56.6
36.6
11.32
6.3
150.0
7.50
2.5
680
AE
1635
54.1
34.5
10.82
5.8
157.2
7.86
2.7
680
AA
2095
50.4
38.3
10.08
14.3
120.4
6.02
4.6
810
AB
2005
55.4
40.2
11.08
17.0
136.4
6.82
5.8
790
AC
1990
62.7
43.2
12.54
10.8
147.4
7.37
3.4
790
AD
1895
69.1
45.5
13.82
9.0
162.4
8.12
2.9
770
AE
1770
66.5
42.9
1331
8.4
168.1
8.40
3.1
750
UV-PRC001-EN
Performance Data
Horizontal Cfg. (D-Coil)
Table P8: HUV; 4-pipe coil with high static motor
VUV
Size
075
100
125
150
200
UV-PRC001-EN
Coil
Type
CFM
DA
DC
DD
Cooling (80/67 EAT, 45 EWT/55 LWT)
Heating (70 EAT, 180 EWT/140 LWT)
Watt
TMBH
SMBH
GPM
WPD
TMBH
GPM
WPD
755
16.9
13.6
3.38
1.3
48.5
2.43
0.5
305
740
19.2
14.7
3.83
1.6
54.4
2.72
0.6
305
740
25.8
17.7
5.16
4.0
47.8
2.39
0.5
305
DE
795
29.3
19.9
5.85
5.0
57.5
2.87
0.7
335
DA
1085
27.8
20.8
5.57
3.8
69.0
3.45
1.1
500
DC
1055
30.7
22.3
6.15
4.5
77.4
3.87
1.3
500
DD
1055
38.5
25.9
7.69
9.7
67.7
3.39
1.0
500
DE
1005
39.2
26.1
7.84
10.0
73.3
3.66
1.2
480
DA
1220
34.4
25.7
6.88
6.4
80.7
4.03
1.5
470
DC
1350
40.8
29.6
8.16
8.7
99.2
4.96
2.3
525
DD
1350
46.0
32.1
9.21
5.8
86.7
4.34
1.8
525
DE
1295
47.8
32.8
9.57
6.4
96.2
4.81
2.1
525
DA
1445
38.1
27.7
7.63
8.7
96.5
4.83
2.3
550
DC
1715
44.7
31.6
8.93
11.6
124.8
6.24
3.8
680
DD
1715
50.9
34.2
10.17
7.8
108.9
5.45
2.9
680
DE
1635
51.8
34.5
10.37
8.3
120.6
6.03
3.5
680
DA
1990
48.9
36.9
9.77
13.6
120.6
6.03
3.5
790
DC
1895
53.4
38.6
10.68
15.9
134.1
6.71
4.3
770
DD
1895
60.8
41.8
12.17
10.7
116.7
5.83
3.3
770
DE
1770
63.0
42.5
12.59
11.8
127.7
6.38
3.9
750
73
Performance Data
H-Coil Heating
Table P9: 2-pipe coil, HW coil
Unit
Size
075
100
125
150
200
74
Coil
Type
Heating (60 EAT, 180 EWT/140 LWT)
TMBH
GPM
WPD
H1
41.18
2.06
2.85
H2
45.12
2.26
3.36
H3
48.74
2.44
3.86
H4
53.49
2.67
0.70
H5
57.95
2.90
0.81
H6
61.84
3.09
0.91
H1
52.90
2.65
0.97
H2
57.98
2.90
1.15
H3
62.65
3.13
1.33
H4
71.90
3.59
1.41
H5
77.92
3.90
1.63
H6
83.19
4.16
1.84
H1
66.45
3.32
1.67
H2
72.85
3.64
1.98
H3
78.73
3.94
2.28
H4
90.36
4.52
2.45
H5
97.97
4.90
2.83
H6
104.61
5.23
3.19
H1
99.89
4.99
2.70
H2
124.35
6.22
4.03
H3
131.66
6.58
4.48
H4
108.87
5.44
3.88
H5
118.05
5.90
4.49
H6
126.08
6.30
5.05
H1
120.35
6.02
3.80
H2
152.05
7.60
5.84
H3
161.68
8.08
6.54
H4
132.52
6.63
5.52
H5
144.37
7.22
6.44
H6
154.87
7.74
7.32
UV-PRC001-EN
Performance Data
X-Coil Cooling
Table P10: 2-pipe, CW cooling data
Unit
Size
075
100
125
150
200
UV-PRC001-EN
Coil
Type
Cooling (80/67 EAT, 45 EWT/55 LWT)
TMBH
SMBH
GPM
WPD
X1
25.20
17.50
5.04
3.80
X2
25.20
17.50
5.04
3.80
X3
25.20
17.50
5.04
3.80
X1
34.90
23.70
6.98
8.10
X2
34.90
23.70
6.98
8.10
X3
34.90
23.70
6.98
8.10
X1
37.50
26.80
7.50
7.50
X2
37.50
26.80
7.50
7.50
X3
37.50
26.80
7.50
7.50
X1
49.50
33.80
9.91
7.40
X2
49.50
33.80
9.91
7.40
X3
49.50
33.80
9.91
7.40
X1
68.55
48.58
13.71
13.25
X2
68.55
48.58
13.71
13.25
X3
68.55
48.58
13.71
13.25
75
Performance Data
DK, R1, R2-Coil Cooling
Table P11: 4-pipe DK coil, CW cooling data
Unit
Size
Coil
Type
Cooling (80 EDB/67 EWB, 45 EWT/55 LWT)
TMBH
SMBH
GPM
WPD
16.60
13.30
3.33
1.30
24.70
18.30
4.94
3.10
34.00
24.50
6.79
6.30
150
39.40
27.70
7.87
9.20
200
45.24
33.11
9.04
11.83
075
100
125
DK
Table P12: 4-pipe R1, R2 coil, CW cooling data
Unit
Size
075
100
125
150
200
76
Coil
Type
Cooling (80 EDB/67 EWB, 45 EWT/55 LWT)
TMBH
SMBH
GPM
WPD
R1
25.19
17.89
5.04
3.82
R2
28.08
19.79
5.62
4.62
R1
35.52
24.60
7.10
8.40
R2
39.29
27.12
7.86
10.04
R1
41.75
29.61
8.35
4.85
R2
46.73
32.88
9.35
5.93
R1
52.11
36.32
10.42
8.11
R2
58.02
40.24
11.60
9.82
R1
62.79
44.78
12.56
11.32
R2
71.72
50.61
14.34
14.37
UV-PRC001-EN
Performance Data
FA, R1, R2-Coil Heating
Table P13: 4-pipe FA coil, HW heating data
Unit
Size
Coil
Type
Heating (60 EAT, 180 EWT/140 LWT)
TMBH
GPM
WPD
53.61
2.68
0.59
72.06
3.60
1.14
90.57
4.53
1.91
150
102.98
5.15
2.63
200
136.30
6.81
4.45
075
100
125
FA
Table P14: 4-pipe R1, R2 coil, HW heating data
Unit
Size
075
100
125
150
200
UV-PRC001-EN
Coil
Type
Heating (60 EAT, 180 EWT/140 LWT)
TMBH
GPM
WPD
R1
30.38
1.52
1.66
R2
36.27
1.81
2.29
R1
38.03
1.90
0.54
R2
45.30
2.27
0.74
R1
48.31
2.42
0.94
R2
57.62
2.88
1.30
R1
68.42
3.42
1.36
R2
81.16
4.06
1.85
R1
81.33
4.07
1.86
R2
96.80
4.84
2.56
77
Performance Data
DX-Coil Cooling
DX Coils are rated at the following conditions:
• 95 F ambient outside air temperature
• 25-feet of tubing
• 400 CFM per ton maximum
Table P15: Direct expansion cooling capacity
Unit
Size
075
100
125
78
Condensing
unit
EWB
Degrees F
TMBH
TTB018
63
10.00 SEER
EDB 72 F
EDB 76 F
EDB 80 F
SMBH
SMBH
SMBH
15.70
10.10
12.30
14.60
67
17.00
7.70
10.00
12.20
71
18.30
5.30
7.50
9.80
TTP018
63
16.40
10.40
12.70
14.90
12.00 SEER
67
17.90
8.10
10.30
12.50
71
19.40
5.70
7.90
10.10
TTP024
63
20.20
11.80
14.00
16.30
12.00 SEER
67
22.00
9.50
11.70
13.90
71
23.90
7.10
9.40
11.60
TTP024
63
21.20
13.80
16.80
19.80
12.00 SEER
67
23.00
10.60
13.60
16.60
71
24.90
7.30
10.30
13.30
TTB024
63
20.00
14.60
18.10
20.50
10.00 SEER
67
21.60
10.90
14.40
17.90
71
23.30
7.00
10.60
16.90
TTP030
63
25.40
16.50
19.90
23.40
12.00 SEER
67
27.60
12.90
16.30
19.80
71
29.90
9.20
12.60
16.10
TTB030
63
27.60
19.10
23.50
27.70
10.00 SEER
67
29.80
14.50
18.90
23.20
71
32.10
9.80
14.10
18.50
TTP030
63
27.70
17.40
21.10
24.90
12.00 SEER
67
30.00
13.40
17.20
20.90
71
32.40
9.40
13.20
16.90
TTA030
63
27.80
19.20
23.50
27.80
10.00 SEER
67
30.00
14.50
18.90
23.20
71
32.30
9.80
14.10
18.50
TTB036
63
32.40
20.90
25.20
29.50
10.00 SEER
67
34.80
16.20
20.50
24.90
71
37.30
11.50
15.80
20.10
UV-PRC001-EN
Performance Data
DX-Coil Cooling
Table P15: Direct expansion cooling capacity (continued)
Unit
Size
150
200
UV-PRC001-EN
Condensing
unit
EWB
Degrees F
TMBH
TTB036
63
10.00 SEER
EDB 72 F
EDB 76 F
EDB 80 F
SMBH
SMBH
SMBH
33.80
23.30
29.20
33.70
67
36.20
17.70
22.90
28.10
71
38.70
11.90
17.10
22.30
TTP036
63
34.10
22.70
27.70
31.50
12.00 SEER
67
36.80
17.40
22.40
27.40
71
39.60
12.00
17.00
22.00
TTA036
63
33.80
23.30
28.50
33.70
10.00 SEER
67
36.40
17.70
22.90
28.10
71
39.10
12.00
17.20
22.40
TTB042
63
40.50
25.90
31.00
36.20
10.00 SEER
67
43.50
20.30
25.40
30.60
71
46.60
14.60
19.70
24.90
TTP042
63
37.90
24.80
30.00
35.10
12.00 SEER
67
41.00
19.30
24.50
29.70
71
44.20
13.70
18.90
24.10
TTA042
63
40.30
25.80
30.90
36.10
10.00 SEER
67
43.50
20.30
25.40
30.60
71
46.90
14.70
19.80
25.00
TTP042
63
38.30
26.30
32.50
36.90
12.00 SEER
67
41.50
19.60
25.80
32.10
71
44.80
12.80
19.00
25.30
TTP048
63
44.30
29.50
36.00
42.60
12.00 SEER
67
48.00
22.50
29.00
35.60
71
51.80
15.40
21.90
28.50
TTA060
63
50.90
32.00
38.50
45.00
10.00 SEER
67
54.50
24.80
31.30
37.90
71
58.20
17.50
24.00
30.60
79
Performance Data
Electric Heat Coils
Table P16: Electric heat capacity
Unit
Size
075
100
125
150
200
80
Coil Type
No of Elem
Elem kW
Total kW
TMBH
F3, X3
3
1.95
5.85
19.98
E4, F4, X4
4
1.95
7.80
26.64
E6, F6, X6
6
1.95
11.70
39.96
E7
7
1.95
13.65
46.61
E9
9
1.95
17.55
59.93
F3, X3
3
2.60
7.80
26.64
E4, F4, X4
4
2.60
10.40
35.52
E6, F6, X6
6
2.60
15.60
53.27
E7
7
2.60
18.20
62.15
E9
9
2.60
23.40
79.91
F3, X3
3
3.25
9.75
33.30
E4, F4, X4
4
3.25
13.00
44.40
E6, F6, X6
6
3.25
19.50
66.60
E7
7
3.25
22.75
77.69
E9
9
3.25
29.25
99.89
F3, X3
3
3.80
11.40
38.91
E4, F4, X4
4
3.80
15.20
51.91
E6, F6, X6
6
3.80
22.80
77.86
E7
7
3.80
26.60
90.84
E9
9
3.80
34.20
116.79
F3, X3
3
3.80
11.40
38.93
E4, F4, X4
4
3.80
15.20
51.91
E6, F6, X6
6
3.80
22.80
77.86
E7
7
3.80
26.60
90.84
E9
9
3.80
34.20
116.79
UV-PRC001-EN
Performance Data
Steam Coils
Table P17: K1, K2 coils
Unit
Size
075
100
125
UV-PRC001-EN
Coil Type
EAT
TMBH
5 PSIG
TMBH
10 PSIG
TMBH
15 PSIG
K1
-20
85.89
89.98
93.48
K1
0
78.94
83.04
86.54
K1
20
72.00
76.10
79.59
K1
40
65.06
69.16
72.65
K1
60
58.12
62.21
65.71
K1
70
54.65
58.74
62.24
K2
-20
101.18
106.01
110.12
K2
0
93.00
97.83
101.94
K2
20
84.82
89.65
93.77
K2
40
76.64
81.47
85.59
K2
60
68.46
73.29
77.41
K2
70
64.38
69.20
73.32
K1
-20
112.93
118.31
122.91
K1
0
103.80
109.19
113.78
K1
20
94.67
100.06
104.65
K1
40
85.54
90.93
95.52
K1
60
76.41
81.80
86.40
K1
70
71.85
77.24
81.83
K2
-20
158.08
165.61
172.05
K2
0
145.30
152.84
159.27
K2
20
132.52
140.06
146.49
K2
40
119.74
127.28
133.71
K2
60
106.96
114.50
120.93
K2
70
100.57
108.11
114.55
K1
-20
139.94
146.61
152.31
K1
0
128.63
135.30
140.99
K1
20
117.31
123.99
129.68
K1
40
106.00
112.68
118.37
K1
60
94.69
101.36
107.06
K1
70
89.03
95.71
101.40
K2
-20
164.93
172.79
179.50
K2
0
151.60
159.46
166.17
K2
20
138.26
146.13
152.84
K2
40
131.78
132.80
139.51
K2
60
111.60
119.47
126.18
K2
70
104.93
112.80
119.51
81
Performance Data
Steam Coils
Table P17: K1, K2 coils (continued)
Unit
Size
150
200
Coil Type
EAT
TMBH
5 PSIG
TMBH
10 PSIG
TMBH
15 PSIG
K1
-20
166.93
174.89
181.68
K1
0
153.44
161.40
168.19
K1
20
139.94
147.90
154.70
K1
40
126.45
134.41
141.20
K1
60
112.96
120.92
127.71
K1
70
106.21
114.17
120.96
K2
-20
243.70
256.14
263.74
K2
0
224.72
236.38
246.33
K2
20
204.96
216.62
226.57
K2
40
185.20
196.86
206.80
K2
60
165.43
177.09
187.04
K2
70
155.55
167.21
177.16
K2
-20
286.51
306.05
317.93
K2
0
266.20
282.43
294.32
K2
20
244.09
258.82
270.71
K2
40
221.28
235.21
274.09
K2
60
197.66
211.59
223.48
K2
70
185.86
199.79
211.67
Notes:
• Condensate trap for the steam coil option is field installed.
• Static pressure for the K1, K2 options should be modeled after the H1-coil option.
• Steam coils that function at 5 psig or less should not utilize valve control. Valve control may starve the
coil, causing stratification.
82
UV-PRC001-EN
Performance Data
DK, FK Steam Coils
UV-PRC001-EN
83
Electrical Data
Minimum Circuit Ampacity
Table E1: Minimum Circuit Ampacity (MCA) for Electric Heat Coils with Standard Motors
Unit Size No of Elem
075
100
125
150
17.91
075
100
125
150
200
075
100
125
150
200
075
100
125
150
200
075
100
125
150
200
3
4
6
7
9
Coil
kW
208V
1ph
240V
1ph
277V
1ph
208V
3ph
240V
3ph
5.85
7.8
9.75
11.4
11.4
7.8
10.4
13.0
15.2
15.2
11.7
15.6
19.5
22.8
22.8
13.65
18.2
22.75
26.6
26.6
17.55
23.4
29.25
34.2
34.2
36.49
48.21
60.32
70.23
72.35
48.21
63.83
79.85
93.07
95.19
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
31.63
41.78
52.28
60.87
62.70
41.78
55.32
69.20
80.66
82.49
62.09
82.41
103.06
120.24
122.08
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
27.40
36.20
45.29
52.87
54.33
36.20
47.93
59.96
69.89
71.48
53.80
71.40
89.29
104.18
105.77
62.60
83.13
103.96
121.33
122.92
NA
NA
NA
NA
NA
21.66
28.43
35.59
52.74
43.44
32.34
42.67
53.40
62.14
64.26
41.98
55.52
69.46
80.93
83.04
52.41
69.44
86.86
101.27
103.38
62.30
82.62
103.33
120.53
122.64
18.77
24.64
30.85
41.33
37.65
28.03
36.98
46.28
53.86
55.69
36.38
48.12
60.20
70.14
71.97
45.43
60.18
75.28
87.76
89.60
53.99
71.60
89.55
104.46
106.29
*
480V
3ph
9.38
12.32
15.42
35.82
18.82
14.01
18.49
23.14
26.93
27.85
18.19
24.06
30.10
35.07
35.98
22.71
30.09
37.64
43.88
44.80
27
35.80
44.78
52.23
53.15
For Trane Controls, add the
following values to determine
TOTAL MCA
84
Volts
Amps
120
0.94
208
0.55
240
0.48
277
0.41
480
0.41
UV-PRC001-EN
Electrical Data
Minimum Circuit Ampacity
Table E2: Minimum Circuit Ampacity (MCA) for Electric Heat Coils with High Static Motors
Unit Size No of Elem
075
100
125
150
200
075
100
125
150
200
075
100
125
150
200
075
100
125
150
200
075
100
125
150
200
3
4
6
7
9
Coil
KW
208V
1ph
240V
1ph
277V
1ph
208V
3ph
240V
3ph
5.85
7.8
9.75
11.4
11.4
7.8
10.4
13.0
15.2
15.2
11.7
15.6
19.5
22.8
22.8
13.65
18.2
22.75
26.6
26.6
17.55
23.4
29.25
34.2
34.2
38.74
50.46
63.67
73.58
74.13
50.46
66.09
83.20
96.42
96.97
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
33.58
43.73
55.18
63.77
64.25
43.73
57.28
72.10
83.56
84.04
64.05
84.36
105.96
123.15
123.63
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
29.09
37.89
47.81
55.25
55.67
37.89
49.63
62.47
72.40
72.82
55.49
73.09
91.81
106.70
107.11
64.29
84.82
106.47
123.84
124.26
NA
NA
NA
NA
NA
23.91
30.68
38.94
44.67
45.23
34.59
44.93
56.75
65.49
66.04
44.23
57.78
72.81
84.27
84.83
54.67
71.70
90.21
104.61
105.17
64.55
84.87
106.68
123.87
124.43
20.72
26.59
33.75
38.72
39.20
29.98
38.94
49.18
56.76
57.24
38.33
50.07
63.10
73.04
73.52
47.38
62.14
78.18
90.67
91.14
55.95
73.56
92.46
107.36
107.84
*
480V
3ph
10.36
13.30
16.87
19.36
19.60
14.99
19.47
24.59
28.38
28.62
19.17
25.04
31.55
36.52
36.76
23.69
31.07
39.09
45.33
45.57
27.97
36.78
46.23
53.68
53.92
For Trane controls, add the
following values to determine
TOTAL MCA
Volts
Amps
120
0.94
208
0.55
240
0.48
277
0.41
480
0.41
UV-PRC001-EN
85
Control Wiring
Field Installed Controls
86
UV-PRC001-EN
Control Wiring
Electric Heat
UV-PRC001-EN
87
Control Wiring
End Device Controls
88
UV-PRC001-EN
Control Wiring
Pneumatic 2-Pipe Room
UV-PRC001-EN
89
Control Wiring
Pneumatic 4-Pipe Zone
90
UV-PRC001-EN
Control Wiring
Tracer ZN520-208V
UV-PRC001-EN
91
Control Wiring
Tracer ZN520 w/E-heat
92
UV-PRC001-EN
Control Wiring
TUC-Standalone
UV-PRC001-EN
93
Control Wiring
TUC-ICS
94
UV-PRC001-EN
Control Wiring
TUC-with Electric Heat
UV-PRC001-EN
95
Control Wiring
TUC-with Reheat
96
UV-PRC001-EN
Dimensional Data
VUV-15 1/4" Depth
UV-PRC001-EN
Unit Size
No of
Fans
A
B
075
2
69"
42"
100
3
81"
54"
125
4
93"
66"
150
5
105"
78"
97
Dimensional Data
VUV-16 1/4" Depth
98
Unit Size
No of
Fans
A
B
075
2
69"
42"
100
3
81"
54"
125
4
93"
66"
150
5
105"
78"
UV-PRC001-EN
Dimensional Data
VUV-21 1/4" Depth
UV-PRC001-EN
Unit Size
No of
Fans
A
B
075
2
69"
42"
100
3
81"
54"
125
4
93"
66"
150
5
105"
78"
99
Dimensional Data
VUV-Ducted Inlet
100
Unit Size
No of
Fans
A
B
075
2
69"
42"
100
3
81"
54"
125
4
93"
66"
150
5
105"
78"
UV-PRC001-EN
Dimensional Data
VUV-Ducted Inlet/Discharge
UV-PRC001-EN
Unit Size
No of
Fans
A
B
075
2
69"
42"
100
3
81"
54"
125
4
93"
66"
150
5
105"
78"
101
Dimensional Data
VUV-Dynamic Air
102
Unit
Size
No of
Fans
A
B
C
075
2
69"
42"
42 1/2"
100
3
81"
54"
54 1/2"
125
4
93"
66"
66 1/2"
150
5
105"
78"
78 1/2"
UV-PRC001-EN
Dimensional Data
VUV-End Covers
UV-PRC001-EN
103
Dimensional Data
Crossover Pipe-1 3/8" O.D.
104
UV-PRC001-EN
Dimensional Data
Crossover Pipe-2 1/8" O.D.
UV-PRC001-EN
105
Dimensional Data
HUV-Ducted Front Discharge
Unit Sizes 075-150
106
Size
A
B
C
D
075
70 1/4"
36"
46"
43 1/4"
100
82 1/4"
48"
58"
55 1/4"
125
94 1/4"
60"
70"
67 1/4"
150
106 1/4"
72"
82"
79 1/4"
UV-PRC001-EN
Dimensional Data
HUV-Ducted Front Discharge
Unit Size 200
UV-PRC001-EN
107
Dimensional Data
HUV-Bottom Double Deflection Discharge
Unit Sizes 075-150
108
Size
A
B
C
D
075
70 1/4"
36"
46"
43 1/4"
100
82 1/4"
48"
58"
55 1/4"
125
94 1/4"
60"
70"
67 1/4"
150
106 1/4"
72"
82"
79 1/4"
UV-PRC001-EN
Dimensional Data
HUV-Bottom Double Deflection Discharge
Unit Size 200
UV-PRC001-EN
109
Dimensional Data
HUV-Inlet Arrangements
110
UV-PRC001-EN
Dimensional Data
Inlet Arrangements
UV-PRC001-EN
111
Dimensional Data
HUV-Drain Pan Connection
112
Unit Size
A
075-150
25 1/2"
200
34 3/4"
UV-PRC001-EN
Dimensional Data
VUV-RH Drain Pan Connection
UV-PRC001-EN
113
Dimensional Data
VUV-LH Drain Pan Connection
114
UV-PRC001-EN
Dimensional Data
ERS-Energy Recovery Unit Vent
UV-PRC001-EN
115
Dimensional Data
SWE-Side Wall Power Exhaust
116
UV-PRC001-EN
Dimensional Data
Gravity Relief Damper
Size
A
B
C
050
30 1/8"
29 7/8"
7 3/4"
075
42 1/8"
41 7/8"
13 3/4"
100
54 1/8"
53 7/8"
16 3/4"
125
66 1/8"
65 7/8"
19 3/4"
150/200
78 1/8"
77 7/8"
22 3/4"
UV-PRC001-EN
117
Dimensional Data
Shelving-Open or Closed
A
118
Type Available
2’
Open
3’
Open & Closed
4’
Open & Closed
5’
Open & Closed
UV-PRC001-EN
Dimensional Data
Shelving-with Grille
A
Type Available
3’
Open & Closed
4’
Open & Closed
5’
Open & Closed
UV-PRC001-EN
119
Dimensional Data
Shelving
120
UV-PRC001-EN
Dimensional Data
Wall Boxes-Horizontal Louver
UV-PRC001-EN
121
Dimensional Data
Wall Boxes Vertical Louver
122
UV-PRC001-EN
Dimensional Data
Wall Box-Vertical Louver
UV-PRC001-EN
123
Accessories
Sensors
Sensor
Part Number
Available on
X13510606020
Option 7 (2-spd) or 9 (1-spd)
• Wall mounted sensor with external adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• The single or 2-speed fan switch
is unit mounted on the classroom unit ventilator
• TUC
• ZN520
X13510618010
Option T (A,H,D,K,R coils)
• Wall mounted sensor with external adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• Fan switching includes HIGHLOW-AUTO-OFF (2-speed)
• ZN520
X13510621010
Option A (E,F,X coils)
• Wall mounted sensor with external adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• Fan switching includes RUNOFF (1-speed)
• TUC
• ZN520
X13510622010
Option B (A,H,D,K,R coils)
• Wall mounted sensor with external adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• Fan switching includes HIGHLOW-OFF (2-speed)
• TUC
• ZN520
X13510627010
Option 8 (A,H,D,K,R coils)
• Wall mounted sensor with internal adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• The 2-speed fan switch is unit
mounted on the classroom unit
ventilator
124
• TUC
• ZN520
UV-PRC001-EN
Accessories
Sensors
Sensor
Part Number
Available on
X13510631010
Option D (A,H,D,K,R coils)
• Wall mounted sensor with internal adjusting temperature
wheel.
• Fan switching includes HIGHLOW-OFF (2-speed)
• TUC
• ZN520
X13510635010
Option U (E,F,X coils)
• Wall mounted sensor with external adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• Fan switching includes AUTOOFF (1-speed)
• ZN520
X13511045010
Option V (A,H,D,K,R coils)
• Wall mounted sensor with internal adjusting temperature
wheel.
• Thermostat Override (TOV) and
Cancel
• Fan switching includes HIGHLOW-AUTO-OFF (2-speed)
• ZN520
X13511046010
Option W (A,H,D,K,R coils)
• Wall mounted sensor with external adjusting temperature
wheel.
• Fan switching includes HIGHLOW-AUTO-OFF (2-speed)
• ZN520
X13511047010
Option X (E,F,X coils)
• Wall mounted sensor with internal adjusting temperature
wheel.
• Fan switching includes AUTOOFF (1-speed)
UV-PRC001-EN
• ZN520
125
Accessories
Shelving
Shelving
Trane’s classroom shelving is
composed of four different styles.
These styles include:
• A shelving unit (open or
closed)
• A piping compartment
• A cut-to-fit-filler
• Formica® laminate tops
The shelving unit(s) are made of
16-gauge paint grip galvanized
steel. Each piece is finished with a
baked-on, industrial grade powder
paint with a coordinating selection
of colors to match the classroom
unit ventilator. All selections are
equipped with leveling legs for
proper mating to the classroom
unit ventilator. For units that include the dynamic air option, a
floor spacer will be installed at the
back of the shelving unit in order
to block air flow under the unit.
See shelving model number, page
51 for complete selection.
The Formica top is a 1-inch particle
board, finished with a choice of
Formica laminate to compliment
and coordinate with the finish
available on the metal shelving
units. The laminate is available in
sectional or continuous lengths for
an esthetically pleasing appearance.
Each shelving component ships
from the factory with a standard
set of installation hardware to help
minimize the need for field supplied components. Note: See
shelving installation instructions
UV-SVN001-EN for more information.
126
Open Shelving
The open shelving design is available in 2, 3, 4 and 5-feet lengths.
Shelving depth includes 15 1/4inch or 21 1/4-inch. The units are
equipped with adjustable shelves
that are reinforced with a formed
channel for maximum strength.
Closed Shelving
The closed shelving design is available in 3, 4 and 5-feet lengths.
Shelving depth includes 15 1/4inch or 21 1/4-inch. The units are
equipped with adjustable shelves
that are reinforced with a formed
channel for maximum strength.
Closed shelving doors are
equipped with two locks as standard.
Cut-to-Fit Filler
The cut-to-fit filler piece may be applied to fit smaller spaces. The filler
is available in an 18-inch or 36-inch
length, but may be cut-to-fit an
area as small as 4-inches. The fill-in
section has a removable front panel to allow access to piping or electrical connections.
Piping Compartment
The piping compartment shelving
is manufactured from 18-gauge
cabinet steel and painted in decorator colors. The compartment is
equipped with a metal top, leveling
legs and a locking front panel. It is
a standalone piece that is best suited for housing piping equipment
for units.
Formica Laminate Top
The laminate top selection is available in 12-decorator colors. It may
be cut-to-fit the shelving selection,
or ordered as a standalone piece
(up to 12-feet). The laminate top is
available with or without a grille.
UV-PRC001-EN
Accessories
ERS, SWE and Wall boxes
ERS-Energy Recovery System
The Trane energy recovery system allows up to 500 cfm of outside
air to be brought into the space without putting a large ventilation
load on the unit ventilator system. The unit may be controlled through
a TUC, ZN520 or a 24V binary signal. The cabinet is made of 16-gauge
galvanized steel with the same finish as the classroom unit ventilator.
The fans are of the double-inlet, forward-curved centrifugal variety.
They are equipped with a 3-speed switch for air balancing. The air-toair heat exchanger is constructed to allow two separate air streams in
a counter-flow direction. The matrix of this heat exchanger prevents
less than 1-percent of cross contamination between the airstreams.
Sidewall Power Exhaust
The sidewall power exhaust is provided with a cabinet and an exhaust damper. The cabinet is
constructed of 16-gauge steel with
adjustable leveling legs at four
corners to match-up with the
classroom unit ventilator. A removable front panel is secured by
three camlock fastener. The cabinet is coated with an appliance
grade powder paint finish in the
same selectable colors as the
classroom unit vent. The exhaust
unit provides nominal 500 (single
fan system) or 750 CFM (dual fan
system) with a 2-speed switch. All
motors are 115/60/1 voltage and
fan(s) are direct drive. See page
116 for dimensional data.
Gravity Relief Damper
The gravity relief damper is barometrically operated. It contains
aluminum blades that are designed to be used with the classroom unit ventilator. The dampers
are typically located in a plenum or
behind shelving. Dampers can be
ordered with an optional wall box.
See page 117 for dimensional data.
UV-PRC001-EN
Pipe Cover
The pipe cover assembly consists
of the pipe enclosure, mounting
strip, and pipe hangers. The enclosure is constructed from 18-gauge
steel that is locked to the mounting
strip without visible fasteners. The
mounting strip is a continuous, roll
formed 20-gauge steel and contains a full length channel for the
enclosure and pipe hangers. The
pipe hangers are .148-inch in diameter, zinc-plated steel wire.
They are designed to support up to
two, 2 1/8-inch O.D. insulated
pipes. See page 120 for dimensional
data.
Wall Boxes
The wall box accessory provides a
year-round outdoor air intake directly to the unit ventilator, sidewall exhaust, or energy recovery
system through an exterior wall.
Wall boxes are constructed of
heavy gauge aluminum and designed to last the life of the building. Internal parts are interlocked,
in addition to being held securely
in place by the frame-within-aframe design. This assures proper
louver alignment. The wall box
frame is formed by four extruded
aluminum channels. The corners
are secured by screws to provide
right angle corners. Louvers are
stacked vertically, and held in position by an integral spacing guide.
The boxes are available with an
anodized aluminum finish, or a
baked enamel finish. The wall box
arrangements are furnished with a
diamond pattern expanded aluminum bird screen to eliminate trash
from blowing into the building.
The grilles are aluminum, and the
same finish as the frame.
127
Mechanical
Specifications
General
The classroom unit ventilator shall
be certified for ventilation at ARI
840 or tested by an independent
testing and balancing lab witnessed by owner’s representative.
All non-ARI manufacturers shall
be within 10 percent of catalog airflow and capacities, or removal of
these units from the jobsite may
be required at the expense of the
manufacturer or contractor.
Cabinet
Cabinetry shall be16-gauge furniture quality steel, with exposed
edges rounded. A 16-gauge removable front panel with quickacting, key operated camlocks
shall be provided for service or
maintenance access. Steel bar discharge grilles shall be welded in
place as an integral part of unit
structure. Internal parts and surfaces exposed to conditioned air
stream shall be insulated with
moisture resistant insulation.
Piping and control end pockets
shall be a minimum of 12-inches
wide to facilitate piping and service. If standard end pocket is less
than 12-inches wide, an extended
cabinet unit shall be provided.
Cabinet insulation shall be 1/2inch thick dual density bonded
glass fiber. The exposed side shall
be a high density erosion proof
material suitable for use in airstreams up to 4500 feet per minute
(FPM). Insulation shall meet the
following Underwriters’ Laboratories Fire Hazard Classification:
•
Flame Spread = 20
•
Fuel Contributed = 15
•
Smoke Developed = 0
Cabinet accessories shall include a
matching steel construction, reinforced for use with unit ventilators.
Steel alignment pins, adjustable
leveling bolts, shelves and option128
al sliding doors, kickplate, and wall
filler sections as required.
Access for inspection and cleaning
of the unit drain pan, coils and fan
section shall be provided. The unit
shall be installed for proper access. Procedures for proper access, inspection and cleaning of
the unit shall be included in the
maintenance manual.
Final finish shall be applied by an
electrostatic powder spray system, with a minimum thickness of
1.5 mil with no visible run marks.
Each unit is supplied in one of seven decorator colors as selected by
the architect.
Fan Board Assembly
The unit ventilator fan board assembly shall be a single, rigid assembly made from corrosion
resistive material. It shall include
the fans, fan housings, bearings,
fan shaft and motor. The fan motor
shall be mounted on the fan board.
Motors
The motors shall be a single speed
permanent split capacitor with
thermal overload protection. A
multiple tap auto transformer is
wired to the motor to provide different rpm settings and to ensure
rated capacity with all coil combinations. The motor shall also be
provided with a quick-disconnect
plug and permanently lubricated
bearing.
Fans
Fans shall be centrifugal forwardcurved double width, double-inlet
corrosion resistant galvanized
wheels, statically and dynamically
balanced, direct driven. Fans shall
be in the blow-through configuration.
Hydronic Coil and Drain Pans
All hydronic coils shall be plate-fin
type and manufactured by the unit
ventilator manufacturer. All hy-
dronic coils shall be hydrostatically tested to 350 psi and burst
tested to 450 psi. The coils shall be
rated in accordance with ARI 440
or 220.
The standard four pipe heating coil
shall be in the preheat location.
Optional four pipe heating coils
shall have the heating coil in the
reheat position so that it can be
controlled for dehumidification.
A drain pan shall be provided under the cooling coil, with drain
connection. The drain pan shall be
easily removable for cleaning. The
drain pan shall be constructed of
corrosion resistant material, or
galvanized steel and insulated to
prevent sweating. The bottom of
the drain pan shall be sloped in
two planes which pitches the condensate to the drain connection.
The drain pan, when the unit is installed and trapped per the manufacturers installation manual, shall
be designed to leave puddles no
more than 2-inch in diameter and
no more than 1/8-inch deep no
longer than 3 minutes following
step 3 of the following test. The
test steps are:
1. Temporarily plug the drain
pan.
2. Fill the drain pan with 1/2” of
water or the maximum
allowed by the drain pan
depth, whichever is smaller.
3. Remove the temporary plug.
Electric Coil
Units equipped for electric heat
shall have a heating element consisting of special resistance elements inserted in an extended
surface fin-tube bundle for maximum element life and safety. Units
equipped for electric heat shall include, as standard, a high temperature cutout with a continuous
sensing element. This device interrupts electrical power whenever
UV-PRC001-EN
Mechanical
Specifications
excessive temperatures are
sensed anywhere along the
leaving side of the coil. A
contactor shall also be included as
standard to ensure positive
disconnect of electric power
whenever fan motor power is
interrupted. A dead front switch
shall also be provided by the
manufacturer to disconnect power
when the access panel is opened.
All electric units shall have a
power wiring console in the right
hand end pocket to facilitate field
wiring of the unit.
Refrigerant Coils
Direct expansion coils shall contain copper tubes mechanically expanded into evenly spaced
aluminum fins. All coils are to be
proof and leak tested. The proof
test must be performed at 1.5
times the maximum operating
pressure and the leak test at the
maximum operating pressure. In
addition, the tubes are to be completely evacuated of air to check
for leaks in a vacuum.
The refrigerant coil distributor assemblies shall be Venturi or orifice
style with round copper distributor
tubes. Distributors shall be sized
consistently with capacity of coil.
Suction headers shall be fabricated from round copper pipe.
aluminum fins. The supply and return connections shall be on the
same side with a 1-inch female
pipe thread (FPT) termination. The
coil shall be pitched to provide
condensate drainage for freeze
protection.
Fresh Air / Return Air Dampers
The classroom unit ventilator shall
be equipped with a dual blade
mixing damper with a compressible seal to ensure proper modulation and mixing of the return and
outdoor air. The damper shall be
capable of varying proportion of
mixed air from 100 percent room
air to 100 percent outside air. On
floor mounted units, an ultra low
leak damper seal made of closed
cell EPDM material shall be provided. Leakage shall be less than 1
percent against 0.5 inches external
static pressure.
Damper shall contain a continuous
divider placed between the damper blades to separate the fresh air
and return air compartments to
prevent blow-through.
Bypass Damper
and mounted for operation of the
classroom unit ventilator. The unit
shall be U.L. listed. The following
options shall be provided to work
with the pneumatic controller.
•
Valve control
•
Face and bypass control
•
Night setback
•
Morning warm-up
•
Low limit thermostat
Direct Digital Controls
Factory mounted direct digital
controls shall contain a Comm 4 or
a Comm 5 communication protocal. Both communication protocals shall be capable of combining
HVAC and building management
into one comfort system. The direct digital controls shall be factory commissioned to include
wiring, configuration and testing
for the system selected. The unit
shall be ready for hook-up to a
building automation system at
hardware set-up. The following
options shall be selectable with
DDC controls:
•
Valve control
•
Face and bypass control
•
Economizer
•
Dehumidification
•
Water temperature sensor
•
Night setback
Field Installed Controls
•
Morning warm-up
Classroom unit ventilators that
contain field installed controls
shall be operated with automatic
controls provided by the control
contractor and installed in the
field.
•
Low limit thermostat
•
Mixed air and discharge sensing
•
Fan, filter status switch
•
Timed override
Steam Heating Coils
Pneumatic Controls
•
The steam coil shall be a 5/8-inch
design sigma-flow, tube-in-tube
distributing coil. All steam coil
copper tubing shall be mechanically expanded into evenly spaced
The pneumatic package shall incorporate a heat/cool changeover
mode for 4-pipe and 2-pipe heat/
cool options. The pneumatic controller shall be factory furnished
Integrated ComfortTM system
capabilities
A thermostatic expansion valve
(TXV) shall be factory selected and
installed for a wide range of control to maintain optimum control
of superheat.
Refrigerant access ports shall be
factory supplied on high and low
side for easy refrigerant pressure
or temperature testing.
UV-PRC001-EN
The face and bypass damper shall
be of aluminum and insulated for
sound attenuation to prevent formation of condensate. Dampers
shall be tightly sealed and designed to minimize heat pickup in
bypass.
129
Mechanical
Specifications
End Device Controls
•
Cut-to-fit filler section
An end device control option shall
utilize factory selected control
components to allow other control
vendors to easily interface with a
classroom air conditioning unit.
The factory supplied components
shall be installed in the unit ventilator and wired to a terminal strip
before shipment. The following
options shall be selectable with
end device controls:
•
Piping compartment
•
Valve control
•
Face and bypass control
•
Low limit thermostat
•
24 volt transformer
•
Fan start/stop relay
•
10 pole terminal block for field
hook-up
Shelving shall be equipped with
leveling legs and hardware required to mate-up with the classroom unit ventilator.
Sidewall Power Exhaust
A sidewall power exhaust shall be
provided with a cabinet similar to
the unit ventilator. The cabinet
shall be constructed of 16-gauge
steel with adjustable leveling legs
at four corners. The front panel
shall be constructed of 16-gauge
steel and secured by three camlock fasteners. The exhaust unit
shall provide a nominal 500 or 750
cfm with a two speed switch. All
motors shall be 115/60/1 voltage
with direct drive fan(s).
Filters
Energy Recovery Unit
Each unit shall be equipped with a
single 1-inch thick, throwaway or
permanent, filter accessible without removal of the unit front panel.
The energy recovery heat exchanger shall be constructed to
have two separate air streams
flowing in counter flow configuration. The heat exchanger shall
have a minimum effectiveness of
75 percent enthalpy energy exchange. Sensible energy only heat
recovery is not acceptable.
Units that contain a dynamic air
option, shall provide access to the
filters through the unit front panel.
See page 38 for filter location.
Shelving and Accessories
Unit ventilator shelving shall be
manufactured from 16-gauge cabinet steel and painted in decorator
colors as specified by the architect.
Shelving shall be equipped with
adjustable shelves reinforced with
a formed channel for maximum
strength. Closed shelving doors
shall be equipped with a locking
device.
The unit ventilator shelving shall
be equipped with a decorative and
protective FormicaTM tops available in twelve colors. Shelving options shall include:
•
Matching grilles
•
Dynamic air barrier shelving
130
Energy recovery heat exchanger
shall be maintenance free and rated for the life of the unit. Units utilizing rotating wheel heat
exchanger design shall have a selfadjusting belt drive and motor(s)
with permanently lubricated bearings.
Units shall not require a defrost
heater for operation with outside
air temperatures above the frost
threshold temperature dependent
on the winter room relative humidity (RH) of:
1. 5 degrees F at 30% RH.
2. 10 degrees F at 40% RH.
3. 15 degrees F at 50% RH.
damper must have factory mounted damper actuator.
Units without electric defrost shall
receive power from space mechanical air conditioning unit for
all unit functions including fan motors and controls. Energy recovery
units with separate power source
shall include warning labels indicating that more than one disconnect is required to disable all
power to air conditioning units
The units shall be interlocked with
space mechanical air conditioning
units to ensure space ventilation
during all occupied periods.
Wall boxes
Trane wall boxes shall provide
year-around moisture free, outdoor air intake directly to the unit
ventilator through the exterior
classroom wall. Wall boxes shall
be available in six standard arrangements to meet installation
requirements on virtually any type
of building construction.
All Trane wall boxes shall be constructed of extremely heavy gauge
material and designed to last the
life of the building. Internal parts
shall be interlocked in addition to
being held securely in place by the
frame-within-a-frame design. This
assures proper louver alignment.
In addition, the strength of the vertical louver design shall simplify
installation by eliminating the
need for a lintel. Wall boxes shall
contain a 1/2-inch square mesh
galvanized screen on the inside of
the louver.
Gravity Relief Dampers
The gravity relief dampers shall be
barometrically operated, aluminum bladed designed to be used
with each Trane unit ventilator.
The gravity relief damper shall be
provided with optional wall boxes.
Units provided with outside air
UV-PRC001-EN
Horizontal Configuration
The horizontal unit ventilator is a ceiling hung air-conditioner. It can either be totally exposed, partially recessed or completely hidden. The unit
is constructed of 16-gauge zinc coated steel. Each unit contains two end
pockets which are easily accessible and provide field hook-up to piping
and controls. The unit fan board is made of 14-gauge corrosive resistant
galvanized metal. All cooling specified units contain a non-corrosive,
positively sloped drain pan that is removable for cleaning
purposes.
UV-PRC001-EN
131
The Trane Company
An American Standard Company
www.trane.com
For more information, contact
your local district office or
email us at comfort@trane.com
Literature Order Number
UV-PRC001-EN
Date
August 2001
Supersedes
UV-DS-1-11-97
Stock Location
La Crosse
Since The Trane Company has a policy of continuous product and product data improvement, it
reserves the right to change design and specifications without notice.