FloAire INDIRECT FIRED BENT TUBE MODULE User Manual
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Modulating Furnace Thermostat Dip Switch Settings
To test all furnace modules during startup, perform the following:
•
Discharge Control: Disconnect one wire to the discharge air sensor to simulate a call for
maximum heat output.
•
Space Control: Set the Thermostat dipswitches to discharge control.
Once high and low fire gas pressure adjustments have been made, configure wiring and dipswitches to
their original state.
*NOTE: All dip switch settings specific for each unit are displayed on the electrical schematic. Red dip
switches located on the modulating furnaces power-vent blower speed controller are de-activated and
should not be adjusted.
FVFAB Settings
The FVFAB has a user interface for choosing the number of stages in the furnace and the input control
type. Number of stages can be selected from 1 to 4. Type of control input can be either 0-10 VDC, 2-10
VDC, 0-20 mA or 4-20 mA.
C1025-1000
Thermostat*
Discharge Control
S1
On
S2
Off
S3
Off
Space Heating
S1
Off
S2
On
S3
Off
T920D-F
Thermostat*
Discharge Control
S1
On
S2
Off
S3
On
Space Heating
S1
Off
S2
On
S3
On
C1025
Thermostat*
Discharge Control
S1
On
S2
Off
S3
Off
Space Heating
S1
Off
S2
On
S3
Off