Trane HUV Installation Operation & Maintenance page 17

Figure 20: Face and bypass
coil isolation valve
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 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.
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
Control 2-position
Electrical 24 VAC, 60 HZ
Stroke Time 10 seconds ON
ON/OFF 5 seconds OFF
Ambient 35 to 122 F, non
condensing
Valve Body
Connections 1/2-sweat
Operating 20.2 lb
Pressure
Close-off 1/2" = 30 psig
Pressure 3/4" = 15 psig
1" = 9 psig
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