Instruction manual

63
ESU FO NOITPIRCSEDNOITISOP LAMRONEMAN HCTIWSHCTIWS PUTES
SW1-1 Status Code Recovery OFF
Turn ON to retrieve up to 7 stored status codes for
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.
TONti Mii HtdIt ditHt
Furnace Setup Switch Description
SW1-3
Low Heat Rise
Adjustment
OFF
T
urn
ON
t
o
i
ncrease
Mi
n
i
mum
H
ea
t
an
d
I
n
t
erme
di
a
t
e
H
ea
t
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 9 percent,
Intermediate Heat airflow 7 percent and high heat airflow 15
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.
Bl Off D l i dj bl d
SW1-7 & SW1-8 Blower OFF delay ON or OFF
Bl
ower
Off
D
e
l
ay t
i
me – a
dj
usta
bl
e 90 secon
d
s to 180
seconds. See table in Adjustments section or refer to unit
wiring diagram.
SW4-2
Intermendiate Heat
Only
(Adaptive Heat Mode
when both SW1-2 and
SW4-2 are OFF)
OFF
When SW1-2 is OFF allows Modulating operation from a
single stage thermostat. Turn ON when using two-stage
thermostat to allow Intermediate Heat operation when R to
W/W1 closes and Maximum Heat operation when R to W/W1
and R to W2 close.
Allows additional CFM per ton selections when used with SW
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 per ton (nominal) when SW 1-5 ON and SW 4-3 OFF
See Air Delivery Tables for model specific CFM vs. static
p
ressure
p
AIR CONDITIONING (A/C) SETUP SWITCHES
SW 2, AC (Cooling Airflow) SETUP SWITCHES
The AC setup switch selects desired cooling or high stage cooling (two stage units) airflow.
O
N
1
2
3
1
SW2
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
AC
The CFM values in the Air Delivery Tables for SW 3 settings are the same as SW 2 settings.
SW 3 cannot be set for airflow higher than SW 2
See Air Delivery Tables for specific switch settings
CF
A11365 AMV98
Fig. 54 -- Furnace Setup Switch Description
987MA