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DIP SWITCH S2
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).
High Cool speed (circulator)
Medium-low Cool speed (circulator)
Medium-high Cool speed (circulator)
Low Cool speed (circulator)
Normal CFM - Base tap
Decrease Cool speed CFM by 10%
Increase Cool speed CFM 10%
ECM Test Mode (motor slew rates disabled)
Cooling Profile -
On: 30 seconds at 50%, 7.5 minutes at 82%, then run at 100%
Off: 30 second Off Delay at 50%
Cooling Profile -
On: No On Delay (run at 100%)
Off: 60 second Off Delay at 100%
Cooling Profile -
On: 7.5 minutes at 82%, then run at 100%
Off: No Off Delay
Cooling Profile - No On or Off Delays
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.
COOL SPEED
COOL SPEED ADJUSTMENT
COOLING PROFILE
M28152
Table 6. DIP Switch S2 Settings – Cooling Airflow.
Description
S9240F2051 MODULATING INTEGRATED FURNACE CONTROL
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.
.
100%
F
A
82%
N
S
P
50%
E
E
1
D
30
FAN SPEED AS A PERCENT OF MAXIMUM.
1
Fig. 7. Fan cooling speed ramp up and ramp down profile
(factory default shown).
SW8
SW9
OFF
OFF
OFF
ON
ON
OFF
ON
ON
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.
9
450
TIME (SECONDS)
Individual Switches
SW10
SW11
SW12
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
30
M28161
SW13
OFF
ON
OFF
ON
69-2807—01
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