10
Power open hot water zone valve
C
Common wire (optional)
W
Heat relay
R
Power
Notes
• Thermostat
C
wire
is optional for this
application.
C
wire required
if Homekit is used.
• Set the R Jumper Switch
on the wall plate to
R
Two wire powered humidifier, dehumidifier, ventilator
U1
IAQ relay
U2
IAQ relay
Notes
• Set the Jumper
Switch on the wall plate to
2 Wire
Single wire non-powered humidifier, dehumidifier, ventilator, or
dehumidification with low speed fan
U1
IAQ relay
Notes
• Set the Jumper Switch on
the wall plate to
1 Wire