S9240F2051 MODULATING INTEGRATED FURNACE CONTROL
9
69-2807—01
.
Fig. 6. DIP Switch S2 - shown with factory default
settings; all OFF.
SW8-9: COOLING FAN SPEED
The fan speed during cooling is factory-set to High.
SW10-11: COOLING FAN SPEED ADJUSTMENT (CFM)
The fan CFM during cooling is factory-set to normal (Base
Tap).
SW12-13: COOLING PROFILE
The fan profile during cooling is factory-set to 30 seconds at
50%, 7.5 minutes at 82%, run at 100%, and with a 30 second
Off delay at 50%. Fig. 7 illustrates the factory-set cooling
profile. The fan speed ramps up and down during speed
changes.
.
Fig. 7. Fan cooling speed ramp up and ramp down profile
(factory default shown).
DIP Switch S3 Settings – Heating Airflow
DIP Switch S3 is used to adjust the heating airflow (CFM).
Refer to Fig. 4 on page 7 for location of DIP switch S3.
The LOW heat CFM setting adjusts the heating CFM that
corresponds to the lowest firing rate of the appliance. The
HIGH heat CFM setting adjusts the heating CFM that
corresponds to the highest firing rate of the appliance. The
CFMs between these two points are interpolated linearly.
DIP SWITCH S2
M28152
COOLING PROFILE
COOL SPEED
89
1
1
10
12
13
COOL SPEED ADJUSTMENT
ON
M28161
30
TIME (SECONDS)
F
A
N
S
P
E
E
D
50%
82%
100%
30
1
1
FAN SPEED AS A PERCENT OF MAXIMUM.
450
Table 6. DIP Switch S2 Settings – Cooling Airflow.
Description
Individual Switches
SW8
SW9
SW10
SW11
SW12
SW13
High Cool speed (circulator)
OFF
OFF
Medium-low Cool speed (circulator)
OFF
ON
Medium-high Cool speed (circulator)
ON
OFF
Low Cool speed (circulator)
ON
ON
Normal CFM - Base tap
OFF
OFF
Decrease Cool speed CFM by 10%
OFF
ON
Increase Cool speed CFM 10%
ON
OFF
ECM Test Mode (motor slew rates disabled)
ON
ON
Cooling Profile -
On: 30 seconds at 50%, 7.5 minutes at 82%, then run at 100%
Off: 30 second Off Delay at 50%
OFF
OFF
Cooling Profile -
On: No On Delay (run at 100%)
Off: 60 second Off Delay at 100%
OFF
ON
Cooling Profile -
On: 7.5 minutes at 82%, then run at 100%
Off: No Off Delay
ON
OFF
Cooling Profile - No On or Off Delays
ON
ON
