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OPTION 1 — AIR HANDLER - HOT WATER HEAT AND HEAT PUMP / AIR CONDITIONER WITH ICOMFORT™
THERMOSTAT
SCREWS TO
SECURE
RELAY (2)
AIR
HANDLER
CONTROL
9-PIN CONNECTOR
22V DIRECT CURRENT COIL
30 AMP CONTACT
RATING
NOTE — EVENHEAT MODE CANNOT BE ENABLED WITH HARMONY III DUE
TO EACH CONTROL REQUIRING ITS OWN DISCHARGE AIR SENSOR.
DETAIL B
CONNECT WIRES TO DISCHARGE AIR SENSOR
TERMINAL ON AIR HANDLER CONTROL.
AIR HANDLER CONTROL
PART NO. 50W28 or 65W70
ORANGE
TO BOILER CONTROL
RELAY
Heat discovery must be completed before powering the icomfort™
thermostat, if not, the icomfort™ setup will need to
be performed again after air handler heat discovery. The icomfort™ thermostat will control operation as single-stage
hot water heat.
Heat relay contacts 4 and 2
must be used to control
boiler when configured with
icomfort™ thermostat only.
Refer to
icomfort
t
Thermostat
Installer's System Setup Guide,
Setting up Equipment Parame
ters
for configuring hot water heating equipment.
1. Press
start
2. Navigate to
equipment
tab.
3. Under system devices, select
AIR HANDER
and select
edit
to the right of the box.
4. Select
Electric heating Air flow
and select
edit
to the right of the box.
5. Use the
UP
or
DOWN
arrows to set the desired
CFM
. Select
save
when done.
6. Under
Equipment Name
, scroll down to
Heating Indoor Blower OFF Delay
and select
edit
to the right of the box.
7. Use the
UP
or
DOWN
arrows to set a maximum of 10 seconds. Select
save
when done
8. Under
Equipment Name
, scroll down to
Heating Indoor Blower ON Delay
and select
edit
to the right of the box.
9. Use the
UP
or
DOWN
arrows to set a maximum of five (5) seconds. Select
save
when done
10. Toggle to
exit
All configurations will use the heat relay terminals
0
and
1
connected
to pins
1
and
3
on the 9-pin connector.
Figure 4. Air Handler - Hot Water Heat and Heat Pump / Air Conditioner with icomfort™ Thermostat
