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UV-PRC001-EN
Trane HUV and VUV
Classroom Unit Ventilators
Horizontal and Vertical
Classroom Unit Ventilators
2 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 construct-
ed 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 in-
stallation 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 pur-
poses. Leveling legs are provided at both ends of the unit to facilitate alignment and leveling. Feature high-
lights include:
• Tracer
TM
ZN520 controls for
automation of the mechanical
system
• Blow thru supply-air design for
freeze avoidance
• Varying coil combinations to fit
a variety of applications
• Factory installed piping
• ASHRAE Cycle II
• ARI 840 certification for
ventilation control
• Maintenance accessibility for
coil fin cleaning
• Factory commissioning of DDC
controls
• Field reversible drain pan
• Quality construction
• Indoor air quality features
UV-PRC001-EN 3
Contents
Introduction
Features and Benefits
Options
Coil Types
Piping and Valves
Controls
Application Considerations
Selection Procedure
How to Select
Glycol Adjustment Factors
Model Number Description
General Data
Performance Data
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
2
4
4
8
15
23
35
45
45
49
51
59
67
67
68
74
75
76
77
78
80
81
83
84
86
97
124
124
126
128
4 UV-PRC001-EN
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 14-
and 16-gauge zinc coated steel. All
steel surfaces are cleaned, phos-
phatized, rinsed and dried before
application of final finish paint.
The paint is applied by an electro-
static powder spray system, mini-
mum thickness of 1.5 mil which
results in an appliance grade fin-
ish.
Front Panels
The front panels are retained by
Allen wrench operated tamper-
proof 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 30-
inch high x 15 1/4-inch depth end
pockets provide easy field installa-
tion of valves, piping, and con-
trols. The units have a large pipe
access opening in both end pock-
ets and large knockouts for piping
and electrical connections. All
electrical connections are made in
the left-hand end pocket, with ex-
ception of units equipped with the
electric heating coil option. See
Figure 2 for end pocket sizing.
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 forma-
tion. The drain pan can be easily
removed for cleaning purposes.
The drain pan is field reversible by
loosening 2-front screws and tilt-
ing.
A drain plug is located on each end
of the drain pan for the vertical
configuration. The plug is drilled-
out during assembly per model
number selection See Figure 2
for drain pan.
Fanboard
The fanboard assembly is acousti-
cally designed in a single, rigid as-
sembly 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 in-
crease strength. The fanboard is
removed by extracting 2-screws.
115V Motor
The motor is a single speed per-
manent split capacitor with ther-
mal overload protection. A
multiple tap auto-transformer is
wired to the motor to provide dif-
ferent 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 1: Front panel with cam-
lock access
Figure 2: Roomy end pocket
and drain pan
Figure 3: Motor disconnect
UV-PRC001-EN 5
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 air-
coil where room air is continuous-
ly 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 ac-
cessible without removal of the
unit front panel. Units containing
dynamic air require front panel re-
moval for filter access. See Figure
5 for vertical filter removal. Fil-
ter options include throw-away
and permanent renewable.
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 accor-
dance 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 configu-
rations. The seal consist of a medi-
um 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 damp-
er with splitter and seal.
OA/RA Actuator
(Option)
The OA/RA actuator provides true
spring return operation for posi-
tive close-off of the OA/RA damp-
ers. The spring return system of
the actuator closes the outside
damper if power is lost to the
building. When ordered with fac-
tory mounted controls, the actua-
tor 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 ven-
tilation on each system.
Table 1: Technical data for OA/RA
actuator
Power Supply
24 VAC ± 20% 50/60 HZ
24 VAC ± 10%
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
Features and
Benefits
Figure 4: Sampling chamber
Figure 5: Vertical filter removal
Figure 6: OA/RA splitter
and seal
6 UV-PRC001-EN
Face and Bypass
(Option)
The face and bypass option con-
sist of an actuator, damper blade
and 2-position water valve (op-
tion).
During face and bypass mode, the
damper swings to an upward posi-
tion, closing off any air travel
through the coil. The damper
blade is tightly sealed to eliminate
heat pickup while in the bypass
mode.
A two-position valve control op-
tion further enhances this system
by closing off all water flow to the
coil during the bypass position.
This provides a cost savings dur-
ing the bypass operation for both
2-pipe and 4-pipe hydronic sys-
tems. 2-pipe main steam systems
also utilize the face and bypass op-
tion with an isolation valve. By uti-
lizing the face and bypass option,
variable pumping is made possi-
ble. See Figure 7 for horizontal
unit with face and bypass.
Face and Bypass Actuator
(option)
The face and bypass damper actu-
ator incorporates a direct couple
design for both the horizontal and
the vertical configurations. See
Figures 8 and 9 for mounting
locations of the actuator.
The actuator is provided with elec-
tronic 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 actua-
tor.
Table 2: Technical data for face &
bypass actuator
Power Supply
24 VAC ± 20% 50/60 HZ
24 VAC ± 10%
Power
Consumption
2 W
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
Features and
Benefits
Figure 7: Horizontal with face
and bypass
Figure 8: Actuator mounting
locations (vertical)
Figure 9: Actuator mounting
locations (horizontal)
UV-PRC001-EN 7
away from the cold outside air
stream, and also mixes this cold
air with return air to provide a uni-
form coil inlet temperature. An ad-
ditional 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.
This blow-thru design also acts as
a noise attenuator. The coil place-
ment near the discharge air allows
fan noise absorption which re-
stricts sound from the unit’s fan to
pass freely into the conditioned
space.
Draw-thru Design
A typical draw-thru design allows
little mixing of the return and out-
side-air stream while locating the
coil very close to the outside air in-
let. This process creates cold spots
on the coil that could lead to coil
freeze-up. See Table 3 for
mixed-air temperature at vari-
ous outside-air conditions.
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 fall-
ing into the spinning fan. This
safety consideration helps prevent
personal injury, noise or equip-
ment damage.
Another key advantage in the
blow-thru design is the protection
against coil freezing. The blow-
thru design keeps the coil farther
Trane - Blow-thru Design Competition - Draw-thru Design
Table 3: Mixed-air temperature at various outside air (OA) conditions
Outside Air
Temperature
Percent Outside Air
16-2/3 20 25 33-1/2 50
-10 Degree 56.80 54.00 50.00 43.40 30.00
0 Degree 58.50 56.00 52.50 46.80 35.00
10 Degree 60.10 58.00 55.00 50.00 40.00
20 Degree 61.90 60.00 57.60 53.40 45.00
8 UV-PRC001-EN
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 contain-
ing 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-
Coils
site supply/return end connections
from the auxiliary coil.
In a 2-pipe coil situation, the main
coil may be either heating or cool-
ing.
A manual air-vent is provided on
all hydronic coils. The vent allows
air to be purged from the coil dur-
ing start-up, or maintenance. The
air vent is located on the return
header of all hydronic coil sys-
tems.
Similarly, a drain plug is located at
the bottom of the MAIN coil return
header. See Figure 10 for typi-
cal header assembly.
Table 4: Coil Types
Single Coil Module Coupled Coil Module
Main/Auxiliary Coils are
opposite End Connections
AA, AB, AC, AD, AE
Combination hot water/cold water coil
DA, DC, DD, DE
Cold water/preheat hot water coil
H1, H2, H3, H4, H5, H6
Hot water ONLY coil
DK
Cold water/preheat steam coil
K1, K2
Steam ONLY coil
X3, X4, X6
Cold water/preheat electric heat coil
E4, E6, E7, E9
Electric heat ONLY coil
FA
Refrigeration/preheat hot water coil
F0
Refrigeration ONLY coil
FK
Refrigeration/preheat steam coil
F3, F4, F6
Refrigeration/preheat electric heat coil
R1, R2
Cold water/reheat hot water coil
Figure 10: Typical header
assembly
Drain
Air Vent
Plug
UV-PRC001-EN 9
Hydronic Main Coils
Hydronic Main Coils
All hydronic coils are wavy plate
finned and available in varied ca-
pacities (Table 5 and 6 listed be-
low). 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.
Table 5: Single coil (2-pipe) data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Cooling
(main)
Rows
Heating
(main)
Face
&
Bypass
HW/CW
Main
Changeover
Coil
AA 12 2 2
H&V
AB 16 2 2
AC 12 3 3
AD 12 4 4
AE 16 4 4
HW ONLY
Main
Coil
H1 12 0 1
H&V
H2 14 0 1
H3 16 0 1
H4 12 0 2
H5 14 0 2
H6 16 0 2
Figure 11: Main coil header sizing for 2-
pipe and 4-pipe systems. (Left
hand configuration shown.)
Indicates air flow
075-200075-200
Table 6: Coupled coil (4-pipe) data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Cooling
(main)
Face
&
Bypass
CW-Main
HW-Preheat
Auxiliary
Coil
DA
075-200
12 2
H&V
DC 16 2
DD 12 3
DE 16 3
CW-Main
E-Heat-Aux.
Coil
X3-X6
075-100 12 3
Not
Available
125 16 2
150 12 3
200 16 3
CW-Main
Steam-Aux.
Coil
DK 075-150 12 3 Not
Available
DK 200 12 3
CW-Main
HW (reheat)-
Aux. Coil
R1 075-200 12 3 Not
Available
R2 075-200 16 3
10 UV-PRC001-EN
Hydronic Auxiliary Coils
Hydronic Auxiliary Coils
All hydronic coils are wavy plate
finned and available in varied ca-
pacities (Table 7 and 8 listed be-
low). 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/re-
turn connections from the main
coil.
See Figure 12 for auxiliary
PREHEAT coil header sizing,
and Figure 13 for auxiliary RE-
HEAT coil header sizing.
Table 7: Auxiliary preheat coil data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Heating
(Aux.)
Face
&
Bypass
CW-Main
HW-Preheat
Aux. Coil
DA
075-200
12
1 H&V
DC 16
DD 12
DE 16
HW ONLY
Main
Coil FA
075-150
12
1
Not
Available
200 14
Figure 13: Auxiliary REHEAT coil header sizing for 2-pipe
and 4-pipe systems. Right hand configuration
shown.
Indicates air flow
Table 8: Auxiliary reheat coil data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Heating
(Aux.)
Face
&
Bypass
CW-Main
HW (reheat)-
Aux. Coil
R1 075-200 12 1 Horiz
ONLY
R2 075-200 16 1
Figure 12: Auxiliary PREHEAT coil header sizing for 4-pipe
systems. (Right hand configuration shown.)
UV-PRC001-EN 11
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 connec-
tions 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 se-
lected, an optional 2-position iso-
lation valve may be used to close
off flow to the steam coil when the
damper is in the full bypass posi-
tion.
For field installed controls, Trane
provides a face and bypass damp-
er ONLY. See Figure 14 for main
coil header sizing for 2-pipe
and 4-pipe systems. Right
hand configuration shown.
Figure 14: 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
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Heating
(main)
Face
&
Bypass
Steam only-
Main Coil
K1 075-150 8 1
H&V
K2 075,125 10 1
K2 100 13 1
K2 150-200 14 1
12 UV-PRC001-EN
Steam Auxiliary Coils
Steam Auxiliary Coils
(DK and FK)
The steam auxiliary heating coil is
a 1-row design, tube-in-tube dis-
tributing coil. Supply and return
connections are on the opposite
end from the main coil. The con-
nections are terminated with a 1-
inch female pipe connection.
The modulating piping valve (op-
tion) is shipped loose and field in-
stalled.
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.
Table 10: Auxiliary steam coil data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Heating
(Aux.)
Face
&
Bypass
CW-Main
Steam
(preheat)
Aux. Coil
DK
075,125 11
1 Not
Available
100 12
150-200 14
DX-Main
Steam
(preheat)
Aux. Coil
FK
075,125
11
1
Not
Available
100 12
150-200 14
Figure 15: Auxiliary steam coil header sizing. (Right
hand configuration shown.)
Indicates air flow
UV-PRC001-EN 13
Electric Heat Coils
Electric Coils
Electric preheat coils consist of
special resistance elements insert-
ed in the coils fin surface for max-
imum element life, heat transfer
and safety. Units include a high
temperature cut-out with a contin-
uous sensing element. This device
interrupts electrical power when-
ever excessive temperatures are
sensed along the leaving air side
of the coil. Electric heat units in-
clude 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 avail-
able when ordering the electric
heat option. Coil options: X3, X4,
X6, F3, F4, F6, E-4, E6, E7, E9.
See Figure 16 for main coil el-
ement location, and Figure 17
for auxiliary coil element loca-
tion.
Figure 17: Auxiliary coil element location. (Left hand
configuration shown.)
Indicates air flow
Figure 16: Main coil element location. (Right hand
configuration shown.)
14 UV-PRC001-EN
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 expan-
sion (DX) configuration is avail-
able in a left hand cooling
configuration ONLY.
Trane also provides a 50 VA trans-
former, 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.
Table 11: Single coil (4-pipe) data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Cooling
(Main)
Face
&
Bypass
DX-Main
E-heat
(preheat)
Aux. Coil
F3-F6
075-150 12
1 Not
Available
200 14
Figure 18: Main DX coil header sizing. (Only available with left
hand configuration)
Indicates air flow
Table 12: Single coil (4-pipe) data
Coil
Description
Coil
Type
Unit
Size
Fins per
inch FPI
Rows
Cooling
(Main)
Face
&
Bypass
DX-Main
Coil FO
075-150 12
2 Not
Available
200 14
DX-Main
HW
(preheat)
Aux. Coil
FA
075-150
12
2
Not
Available
200 14
Thermal Expansion Valve
All refrigeration coils (F0, FA, F3-F6) come with a thermal expansion
valve flow metering device. This thermal expansion valve (TXV) precise-
ly 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 pre-
cise metering by the TXV increases the efficiency of the unit. See Figure
19 for expansion valve.
Figure 19: Expansion valve
UV-PRC001-EN 15
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 modu-
lating 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
8
GPM
9
GPM
10
GPM
11
GPM
12
GPM
13
GPM
14
GPM
15
GPM
16
GPM
17
GPM
18
GPM
19
GPM
20
GPM
1/2" - 1.8 Cv 2.85
(ft)
6.42
(ft)
11.41
(ft)
17.82
(ft)
25.67
(ft)
34.94
(ft)
1/2" - 4.6 Cv 2.73
(ft)
3.93
(ft)
5.35
(ft)
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)
3/4" - 7.3 Cv 3.51
(ft)
4.33
(ft)
5.25
(ft)
6.24
(ft)
7.33
(ft)
8.50
(ft)
9.75
(ft)
11.10
(ft)
12.53
(ft)
14.04
(ft)
15.65
(ft)
17.34
(ft)
Piping
Coil Valve Control
Actuator
Control 3-Point Modulating
Electrical 24 VAC, 60 HZ
Stroke 110 seconds
Ambient 140 F at 95% relative
humidity
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)
Valve Body
Connections 1/2-inch threaded
Static Pressure 400 PSI
Close-off
Pressure
1.8 Cv = 80 psig
4.6 Cv = 45 psig
Temperature Water 200 F Max.
Actuator
Control 3-Point Modulating
Electrical 24 VAC, 60 HZ
Stroke 50 seconds
Ambient 140 F at 95% relative
humidity
2-Way Control Valve (3-Point Modulating)
3/4-inch FNPT; 7.3 Cv (Digit 16/17 = H)
Valve Body
Connections 3/4-inch threaded
Static Pressure 400 PSI
Close-off
Pressure
75 psig
Temperature Water 200 F Max.
16 UV-PRC001-EN
Piping
Coil Valve Control
Actuator
Control 3-Point Modulating
Electrical 24 VAC, 60 HZ
Stroke 95 seconds
Ambient 140 F at 95% relative
humidity
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)
Valve Body
Connections 1/2 or 3/4-inch
threaded
Static Pressure 400 PSI
Close-off
Pressure
1.8 Cv = 345 psig
4.6 Cv = 216 psig
7.3 Cv = 138 psig
Actuator
Control 3-Point Modulating
Electrical 24 VAC, 60 HZ
Stroke 50 seconds
Ambient 140 F at 95% relative
humidity
3-Way Control Valve (3-Point Modulating)
3/4-inch FNPT; 7.3 Cv (Digit 16/17 = R)
Valve Body
Connections 3/4-inch threaded
Static Pressure 400 PSI
Close-off
Pressure
75 psig
Temperature Water 195 F Max.
Actuator
Control 3-Point Modulating
Electrical 24 VAC, 60 HZ
Stroke 110 seconds
Ambient 140 F at 95% relative
humidity
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)
Valve Body
Connections 1/2-inch threaded
Static Pressure 400 PSI
Close-off
Pressure
1.8 Cv = 80 psig
4.6 Cv = 45 psig
Temperature Water 195 F Max.
Note: Allow 2-1/2-inch above the steam valve for removal of the valve cover
UV-PRC001-EN 17
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 push-
es 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.
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 Fig-
ure 20 for face and bypass coil isolation valve.
Piping
Coil Valve Control
Figure 20: Face and bypass
coil isolation valve
Actuator
Control 2-position
Electrical 24 VAC, 60 HZ
Stroke Time
ON/OFF
10 seconds ON
5 seconds OFF
Ambient 35 to 122 F, non
condensing
2-Way Isolation Valve (2-position)
1/2-/3/4-/1-sweat; 1.8 Cv; Htg-NO; Changeover & Clg-NC (Digit 16 = 3,7)
Valve Body
Connections 1/2-sweat
Operating
Pressure
20.2 lb
Close-off
Pressure
1/2" = 30 psig
3/4" = 15 psig
1" = 9 psig
18 UV-PRC001-EN
Piping
VUV Stroketime Value
Stroketime Values
Tables 14 and 15 should be used in identifying unit ventilator valve stroketime values for the vertical and hor-
izontal units.
Table 14: Vertical unit ventilator (VUV) stroketime value
DIGIT(S) STROKE TIME
ZN520
VALVE 1 VALVE 2
TUC
1, 2, 3 12, 13 15 16 17 HEAT byte126 COOL byte 125 byte 132 byte 133
VUV FA A - H, Q, R, T - Y 8 1 105 205 0 NA - DX 105 NA - DX
VUV FA A - H, Q, R, T - Y 9 1 105 251 0 NA - DX 105 NA - DX
VUV FA A - H, Q, R, T - Y X 1 105 254 0 NA - DX 105 NA - DX
VUV FA A - H, Q, R, T - Y Y 1 105 208 0 NA - DX 105 NA - DX
VUV AA - AE A - H, Q, R, T - Y W 0 105 183 105 78 105 NA
VUV AA - AE A - H, Q, R, T - Y G 0 105 149 105 123 105 NA
VUV AA - AE A - H, Q, R, T - Y Z 0 105 188 105 126 105 NA
VUV AA - AE A - H, Q, R, T - Y Q 0 105 148 105 80 105 NA
VUV AA - AE A - H, Q, R, T - Y H 0 45 187 45 121 45 NA
VUV AA - AE A - H, Q, R, T - Y R 0 45 149 45 80 45 NA
VUV H1 - H6 A - H, Q, R, T - Y W 0 105 183 0 NA 105 NA
VUV H1 - H6 A - H, Q, R, T - Y G 0 105 149 0 NA 105 NA
VUV H1 - H6 A - H, Q, R, T - Y Z 0 105 188 0 NA 105 NA
VUV H1 - H6 A - H, Q, R, T - Y Q 0 105 148 0 NA 105 NA
VUV H1 - H6 A - H, Q, R, T - Y H 0 45 187 0 NA 45 NA
VUV H1 - H6 A - H, Q, R, T - Y R 0 45 149 0 NA 45 NA
VUV DA - DE A - H, Q, R, T - Y 8 105 205 NA 105
VUV DA - DE A - H, Q, R, T - Y 9 105 251 NA 105
VUV DA - DE A - H, Q, R, T - Y X 105 254 NA 105
VUV DA - DE A - H, Q, R, T - Y Y 105 208 NA 105
VUV DA - DE A - H, Q, R, T - Y W 105 78 105 NA
VUV DA - DE A - H, Q, R, T - Y G 105 123 105 NA
VUV DA - DE A - H, Q, R, T - Y Z 105 126 105 NA
VUV DA - DE A - H, Q, R, T - Y Q 105 80 105 NA
VUV DA - DE A - H, Q, R, T - Y H 45 121 45 NA
VUV DA - DE A - H, Q, R, T - Y R 45 80 45 NA
VUV DK A - H, Q, R, T - Y T 85 16 NA 85
VUV DK A - H, Q, R, T - Y U 85 24 NA 85
VUV DK A - H, Q, R, T - Y V 85 16 NA 85
VUV DK A - H, Q, R, T - Y W 105 78 105 NA
VUV DK A - H, Q, R, T - Y G 105 123 105 NA
VUV DK A - H, Q, R, T - Y Z 105 126 105 NA
VUV DK A - H, Q, R, T - Y Q 105 80 105 NA
VUV DK A - H, Q, R, T - Y H 45 121 45 NA
VUV DK A - H, Q, R, T - Y R 45 80 45 NA
VUV R1, R2 A - H, Q, R, T - Y W 105 205 NA 105
VUV R1, R2 A - H, Q, R, T - Y G 105 251 NA 105
VUV R1, R2 A - H, Q, R, T - Y Z 105 254 NA 105
VUV R1, R2 A - H, Q, R, T - Y Q 105 208 NA 105
VUV R1, R2 A - H, Q, R, T - Y W 105 78 105 NA
VUV R1, R2 A - H, Q, R, T - Y G 105 123 105 NA
VUV R1, R2 A - H, Q, R, T - Y Z 105 126 105 NA
VUV R1, R2 A - H, Q, R, T - Y Q 105 80 105 NA
VUV R1, R2 A - H, Q, R, T - Y H 45 121 45 NA
VUV R1, R2 A - H, Q, R, T - Y R 45 80 45 NA
VUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 W NA - ELC NA - ELC 105 78 105 NA
VUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 G NA - ELC NA - ELC 105 123 105 NA
VUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 Z NA - ELC NA - ELC 105 126 105 NA
VUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 Q NA - ELC NA - ELC 105 80 105 NA
VUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 H NA - ELC NA - ELC 45 121 45 NA
VUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 R NA - ELC NA - ELC 45 80 45 NA
UV-PRC001-EN 19
Piping
HUV Stroketime Value
Table 15: Horizontal unit ventilator (HUV) stroketime value
DIGIT(S) STROKE TIME
ZN520
VALVE 1 VALVE 2
TUC
1, 2, 3 12, 13 15 16 17 HEAT byte126 COOL byte 125 byte 132 byte 133
HUV FA A - H, Q, R, T - Y 8 1 105 205 0 NA - DX 105 NA - DX
HUV FA A - H, Q, R, T - Y 9 1 105 251 0 NA - DX 105 NA - DX
HUV FA A - H, Q, R, T - Y X 1 105 254 0 NA - DX 105 NA - DX
HUV FA A - H, Q, R, T - Y Y 1 105 208 0 NA - DX 105 NA - DX
HUV AA - AE A - H, Q, R, T - Y W 0 105 183 105 78 105 NA
HUV AA - AE A - H, Q, R, T - Y G 0 105 149 105 123 105 NA
HUV AA - AE A - H, Q, R, T - Y Z 0 105 188 105 126 105 NA
HUV AA - AE A - H, Q, R, T - Y Q 0 105 148 105 80 105 NA
HUV AA - AE A - H, Q, R, T - Y H 0 45 187 45 121 45 NA
HUV AA - AE A - H, Q, R, T - Y R 0 45 149 45 80 45 NA
HUV H1 - H6 A - H, Q, R, T - Y W 0 105 183 0 NA 105 NA
HUV H1 - H6 A - H, Q, R, T - Y G 0 105 149 0 NA 105 NA
HUV H1 - H6 A - H, Q, R, T - Y Z 0 105 188 0 NA 105 NA
HUV H1 - H6 A - H, Q, R, T - Y Q 0 105 148 0 NA 105 NA
HUV H1 - H6 A - H, Q, R, T - Y H 0 45 187 0 NA 45 NA
HUV H1 - H6 A - H, Q, R, T - Y R 0 45 149 0 NA 45 NA
HUV DA - DE A - H, Q, R, T - Y 8 105 205 NA 105
HUV DA - DE A - H, Q, R, T - Y 9 105 251 NA 105
HUV DA - DE A - H, Q, R, T - Y X 105 254 NA 105
HUV DA - DE A - H, Q, R, T - Y Y 105 208 NA 105
HUV DA - DE A - H, Q, R, T - Y W 105 78 105 NA
HUV DA - DE A - H, Q, R, T - Y G 105 123 105 NA
HUV DA - DE A - H, Q, R, T - Y Z 105 126 105 NA
HUV DA - DE A - H, Q, R, T - Y Q 105 80 105 NA
HUV DA - DE A - H, Q, R, T - Y H 45 121 45 NA
HUV DA - DE A - H, Q, R, T - Y R 45 80 45 NA
HUV DK A - H, Q, R, T - Y T 85 16 NA 85
HUV DK A - H, Q, R, T - Y U 85 24 NA 85
HUV DK A - H, Q, R, T - Y V 85 16 NA 85
HUV DK A - H, Q, R, T - Y W 105 205 105 NA
HUV DK A - H, Q, R, T - Y G 105 251 105 NA
HUV DK A - H, Q, R, T - Y Z 105 254 105 NA
HUV DK A - H, Q, R, T - Y Q 105 208 105 NA
HUV DK A - H, Q, R, T - Y H 45 249 45 NA
HUV DK A - H, Q, R, T - Y R 45 208 45 NA
HUV R1, R2 A - H, Q, R, T - Y W 105 205 NA 105
HUV R1, R2 A - H, Q, R, T - Y G 105 251 NA 105
HUV R1, R2 A - H, Q, R, T - Y Z 105 254 NA 105
HUV R1, R2 A - H, Q, R, T - Y Q 105 208 NA 105
HUV R1, R2 A - H, Q, R, T - Y W 105 78 105 NA
HUV R1, R2 A - H, Q, R, T - Y G 105 123 105 NA
HUV R1, R2 A - H, Q, R, T - Y Z 105 126 105 NA
HUV R1, R2 A - H, Q, R, T - Y Q 105 80 105 NA
HUV R1, R2 A - H, Q, R, T - Y H 45 121 45 NA
HUV R1, R2 A - H, Q, R, T - Y R 45 80 45 NA
HUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 W NA - ELC NA - ELC 105 78 105 NA
HUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 G NA - ELC NA - ELC 105 123 105 NA
HUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 Z NA - ELC NA - ELC 105 126 105 NA
HUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 Q NA - ELC NA - ELC 105 80 105 NA
HUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 H NA - ELC NA - ELC 45 121 45 NA
HUV X3, X4, X6 A - H, Q, R, T - Y 4, 5 R NA - ELC NA - ELC 45 80 45 NA
20 UV-PRC001-EN
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 in-
stalled.)
See Figure 21 for typical piping package.
Piping Package Types
Piping
Factory Installed Piping
Figure 21: Typical piping package
(package D shown)
CBV = Circuit balancing valve (page 21) P/T Port = Pressure/temperature port BV = Bypass balancing valve
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