S9240F2051 MODULATING INTEGRATED FURNACE CONTROL
69-2807—01
8
SW2: SEQUENCE
The sequence is factory-set (OFF) to respond to a thermostat
as dictated by the SW1 selection.
The ON position configures the IFC for the Allied modulating
firing state sequence with 2-stage thermostat; and SW1 must
be OFF.
NOTES:
1.
SW2 position is ignored if SW1 is ON.
2.
When used in a communicating system, both
SW1 and SW2 are ignored.
SW3: 2ND STAGE ON DELAY
The On Delay timing applies to systems configured
only
with
single stage thermostats. It is the length of time operating in
normal low fire mode before switching to high fire mode. The
timing is factory-set (OFF) to 7 minutes.
The ON position configures the 2nd stage On Delay for 12
minutes.
NOTE: SW3 position is ignored if SW1 is OFF.
SW4-5: HEAT FAN OFF DELAY
The Heat Fan Off Delay is the period between the loss of
supervised main burner flame after the call for heat has ended
and the deactivation of the blower motor at the low heat
speed. The timing is factory-set (all OFF) to 90 seconds. See
Table 5 for other timing settings.
SW6-7
These two switches are not used.
DIP Switch S2 Settings – Cooling Airflow
DIP Switch S2 is used to adjust the cooling speed and profile.
Refer to Fig. 4 on page 7 for location of DIP switch S2.
The default factory settings (all OFF) are shown in Fig. 6 and
indicated in Bold in Table 6.
To change any setting, first disconnect the power, then set
SW8
through
SW13
according to Table 6.
Table 5. DIP Switch S1 Settings - Defaults in Bold.
Description
Individual Switches
SW1
SW2
a
SW3
b
SW4
SW5
SW6
d
SW7
e
2-Stage Thermostat: 2nd and 3rd stage On Delay disabled
OFF
Single Stage Thermostat: 2nd and 3rd stage On Delay
enabled
ON
Conventional 2-stage sequence with 2-stage thermostat
OFF
Special modulating sequence with 2-stage thermostat
c
ON
2nd Stage On Delay - 7 minutes
OFF
2nd Stage On Delay - 12 minutes
ON
Heat Fan Off Delay - 60 seconds
OFF
ON
Heat Fan Off Delay - 90 seconds
OFF
OFF
Heat Fan Off Delay - 120 seconds
ON
OFF
Heat Fan Off Delay - 180 seconds
ON
ON
a
Switch 2 is ignored if switch 1 is in the ON position.
b
Switch 3 is ignored if switch 1 is in the OFF position.
c
When configured with a communicating thermostat, both SW1 and SW2 are ignored.
d
Switch 6 is not used.
e
Switch 7 is not used.
