12
PRODUCT DESIGN
TwinComfort™ Configuration & Operation
SECOND
STAGE
ONLY
SECOND
DELAY
SECOND
DELAY
1-STAGE
2-STAGE
HEAT OFF
DELAY
MODE
AUTO
*
Switches for White-Rodgers board shown above
With other venders, order of switches may vary
but functionality stays the same.
TwinComfort™
This furnace is capable of the following heating modes:
To change from the factor single-stage operation, adjust the
dipswitches on the ignition control as follows:
Note: This furnace is designed to be used
with a single-stage thermostat.
•
Modified Two-Stage
>
Fixed 5-Min. Low Stage
>
Auto Time (1-12 Min.) Low Stage
•
Single Stage (Factory Setting)
T-Stat Satisfied
T-Stat Satisfied
Gas Valve Switch
to 2nd Stage
Gas Valve Switch
to 2nd Stage
Blower Switch to
Hi Heat Operation
Blower Switch to
Hi Heat Operation
Low-Heat Blower
Low-Heat Blower
Delay Time (5 Min)
Delay Time (1-12 Min)
Safety Circuit Check
Safety Circuit Check
Start Furnace
in Low Stage
Start Furnace
in Low Stage
Start
Start
Call for Heat
Call for Heat