Wiring - Honeywell TrueIAQ Owner's Manual

Wiring

M24819
69-2072—09
Pin Pin description
R 24V supply. Must be common to G output. 24Vac±20% 1.5
C 24V supply common.
Sensor Communication and supply bus to remote
sensors (sensor pins not polarized).
Sensor
Switch Override switch input. Active when R is
applied
W W input to sense when the thermostat is
calling for heat. Active when R is applied.
G G input to sense fan calls. Active when R is
applied. Fan output to activate system fan.
R8222 Isolation Relay may be required if G
is not isolated through the thermostat.
Vent 1 Dry contact output. Opens the vent
damper of an HRV or the bathroom fan
Vent 2
and Damper.
Dehum 1 Dry contact output. Starts the
Dehumidifier or an alternate fan speed.
Dehum 2
Hum 1 Dry contact output. Starts the Humidifier.
Hum 2
10
Pin capacity
amp max
24Vac±20%
24Vdc 64mA max
out
24Vac±20%,
10mA max in
24Vac±20%,
10mA max in
24Vac±20%,
10mA max in
24Vac from R,
1Amp max out
24Vac from R,
1Amp max out
24Vac from R,
1Amp max out
24Vac from R,
1Amp max out