Trane HUV Installation Operation & Maintenance page 61

Table 27: Coil Area
Unit Size
075
100
125
150
200
Table 28: Basic comments about the classroom unit ventilator
Model Number Designation
Digit 8: Unit Incoming Power
Digit 9: PSC Motor/Disconnect 1 A non-fused toggle disconnect is not considered to be a true service disconnect because of its location
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
UV-PRC001-EN
General
Data
Length Width
(inch) (inch)
42 12
54 12
66 12
78 12
78 12
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.
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.
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 option-
al). 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 connec-
tions are opposite end connections (NOT same-side connections). The cooling side of the coil is con-
sidered the "main" coil connection
considered the "auxiliary" coil connection
with an isolation valve is available on the DA-DE coils. Modulating valve control is also available with
...
the DA-DE coil selection
6 The vertical unit with DK (2-pipe CW/Steam preheat) coil selection is available with valve control
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.
Face Area
(Square-inch)
504
648
792
936
936
...
it is a 3/4-inch piping connection. The heating side of the coil is
...
it is a 1/2-inch piping connection. Face and bypass control
but face and bypass with valve modulation isolation is not a valid option.
...
face
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