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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
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