Fantech VHR 2004 - ELECTRICAL CONNECTIONS; Wiring for Common Control Devices; Wiring Notes and Timer Connections

16
ELECTRICAL CONNECTIONS
Air Quality
Sensor
- +
Custom defrost mode jumper selection
3 position mode selection switch
Diagnostic LED
U
20-minute timer (up to 5 timers)
Dehumidistat
2 wires
Dehumidistat
On/Off
4 wires
Mechanical
Crank Timer
2 wires
and /
or
and /
or
(1 only)
CUR SW
DEHUM
N.C.
N.O.
TIMER
EDF
COM
FURNACE
INTERLOCK
+ - + - + -
IN COM
EDF5 or EDF2
(not shown)
EDF1 and EDF1R (not shown)
RTS3
(observe polarity)
* Wiring diagram of complete unit inside of access panel
Observe polarity on all accessory controls where applicable.
2 wires
2 wires
3 wires