Trane HUV Installation Operation & Maintenance page 63

Model Number Designation
Digit 19: Zone Sensor/Fan
Speed Switch
Digit 20: Inlet Arrangement
Digit 27: Piping Packages
Digit 28: Crossover Piping
Digit 32: DDC Control
Accessories
UV-PRC001-EN
General
Data
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 se-
lecting 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 ad-
justment. Unit ventilators ordered with Digit 19 as 0 or 1 must contain field installed/end device con-
trols.
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 radi-
ant heat that is produced by these coils may shorten the sensor life.
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 .
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.
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).
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.
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