Honeywell 69-2480EF05 Ventilation Hood User Manual


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Wiring (continued)
TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—05
22
Follow this diagram if using a
TrueIAQ (DG115EZIQ).
Follow this diagram
for Alternate Interlock
Wiring with Forced Air
System
TheERV/HRVisinterlockedwiththeforcedairsystemandisusedinconjunctionwitholder-style
thermostats where the G and Y terminals are coupled together in the thermostat (fan and cool are
simultaneouslyenergized).
This wiring method will prevent turning on the cooling system when the ventilator turns on the furnace fan.
NOTE: Only use this wiring method for systems where G and Y are coupled at the thermostat.
OLDER -STYLE
THERMOSTAT
FAN (G) & COOL (Y)
ARE COUPLED
FORCED AIR SYSTEM
(FURNACE)
24-VOLT
TERMINAL BLOCK
FAN TIMER
OR OTHER
WALL
CONTROL
POWERED
VENTILATOR
M28992
C
Y
W
G
R
Y
W
G
R
M28993
VENT
VENT
DEHUM
DEHUM
TrueIAQ
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