Instruction manual
65
SETUP SWITCH SWITCH NAME NORMAL POSITION DESCRIPTION OF USE
TON i d df
Furnace Setup Switch Description
SW1-1 Status Code Recovery OFF
T
urn
ON
to retr
i
eve up to 7 store
d
status co
d
es
f
or
troubleshooting assistance when R thermostat lead is
disconnected.
SW1-2
Low Heat Only
(Adaptive Heat Mode when SW1
-
2 is OFF)
OFF
When SW1-2 is OFF allows low heat operation with a
single stage thermostat. Turn ON when using two-
stage thermostat to allow Low Heat operation when R
to W/W1 closes and High Heat operation when R to
W/W1 and W2 close.
SW1-3 Low Heat Rise Adjustment OFF
Turn ON to increase Low Heat airflow by 18 percent.
This compensates for increased return air
temperature caused with bypass humidifier. This also
increases the low heat inducer speed 15 percent.
SW1-4 Comfort/Efficiency Adjustment ON
Turn ON to decrease low heat airflow by 7 percent,
and high heat airflow 10 percent for maximum
comfort.
SW1-5 CFM per ton adjust OFF
Turn ON for 400 CFM per ton, Turn OFF for 350 CFM
per ton. See also SW4.
SW1-6 Component Self Test OFF
Turn ON to initiate Component Self Test for
troubleshooting assistance when R thermostat lead is
disconnected. Turn OFF when Self Test is completed.
SW1-7 & SW1-8 Blower OFF delay ON or OFF
Blower Off Delay time – adjustable 90 seconds to 180
seconds. See table in Adjustments section or refer to
unit wirin
g
dia
g
ram.
gg
SW4-3
Intermediate
CFM per ton Adjust
OFF
Allows additional CFM per ton selections when used
with SW 1-5
325 CFM per ton (nominal) when SW 4-3 ON and SW
1-5 OFF
350 CFM per ton (nominal) when SW 4-3 OFF and
SW 1-5 OFF
370 CFM per ton (nominal) when SW4-3 ON and SW
1-5 ON
400 CFM t ( i l) h SW 1 5 ON d SW
400
CFM
per
t
on
(
nom
i
na
l)
w
h
en
SW
1
-
5
ON
an
d
SW
4-3 OFF
See Air Delivery Tables for model specific CFM vs.
static pressure
AIR CONDITIONING (A/C) SETUP SWITCHES
SW 2
,
AC
(
Coolin
g
Airflow
)
SETUP SWITCHES
O
N
1
1
2
,( g )
The AC setup switch selects desired cooling or high stage cooling (two stage units) airflow.
See Air Delivery Tables for specific switch settings
CONTINUOUS FAN (CF) SETUP SWITCHES
SW 3, CF (Continuous Fan) SETUP SWITCHES
The CF setup switch selects desired Continuous Fan Airflow
The CF switch position is the low cooling airflow selection for two stage cooling units.
O
N
1
2
3
1
SW3
2
3
AC
SW
2
The
CF
switch
position
is
the
low
cooling
airflow
selection
for
two
stage
cooling
units.
The CFM values are shown in the Air Delivery Tables below for SW 3 settings
SW 3 cannot be set for airflow higher than SW 2
See Air Delivery Tables for specific switch settings
3
CF
O
O
O
O
O
O
O
O
Model Size
CONTINUOUS FAN AIRFLOW: SET-UP SWITCH SW3 POSITIONS
O
O
O
O
O
O
O
O
321
N
321
N
321
N
321
N
321
N
321
N
321
N
321
N
040-14
060-14
080-16
100-16
120-22 1190 435 540 785 1010 1190 1475 1475
1475 1475
1190 435 540 785 1010 1190 1475
1190 435 540 785 1010 1190
1475
1190 435 540 785 1010 1190 1475 1475
905 440 630 850 905 905 905 905
A11363 A2X96
Fig. 55 -- Furnace Setup Switch Description
986TA