AC/HP CFM ADJUST
Select low, medium, or high airflow. To provide any of these
airflows, AC/HP ADJUST select must be moved to MED position.
The factory selection is LO. The adjust selections HI/LO will
regulate airflow supplied for all operational modes, except non-
heat pump heating modes, +10 percent and -10 percent respec-
tively. The adjust selection options are provided to adjust airflow
supplied to meet individual installation needs for such things as
noise, comfort, and humidity removal. (See Fig. 16.)
AC/HP TIME DELAY
Select desired time delay profile. Four motor operation delay
profiles are provided to customize and enhance system operation.
(See Fig. 16.) The selection options are:
1. The standard 90 sec off delay (factory setting).
2. No delay option used for servicing unit or when a thermostat
is utilized to perform delay functions.
3. A 30 sec on/90 sec off delay profile used when it is desirable
to allow system coils time to heat up/cool down prior to
Table 3—Male/Female Quick-Connect Terminals (FK4B)
SIZE FEMALE
SIZE MALE
DESCRIPTION
0.250 X 0.032
M2
Motor line voltage connection (230 vac 60 Hz)
T3
Transformer line voltage connection (230 vac 60 Hz)
T2
Transformer tap storage terminal for 208-vac lead
SEC1
Secondary connection from transformer (24 vac)
This connection is common to chassis ground through eyelet marked GROUND SCREW REQUIRED.
SEC2
Secondary connection from transformer (24 vac)
HUM1
Low voltage ground for humidifier option (24 vdc)
HUM2
Low voltage output for humidifier option (24 vdc)
AUX1
Low voltage ground for auxiliary option (24 vdc)
AUX2
Low voltage output for auxiliary option (24 vdc)
0.187 X 0.032
M1
Common connection to blower motor
T1
Common connection for transformer
RED
Common to R screw terminal and SEC2
Table 4—Connections on Single Barrier Strip Mounted, Cross Slotted, Captive Binding Head (FK4B)
SCREW
TERMINAL
DESCRIPTION
W2
Connection for W2 signal from thermostat
W3
Connection for W3 signal from outdoor thermostat
E
Connection for E signal from thermostat
Y/Y2
Connection for Y signal from thermostat
G
Connection for G signal from thermostat
O
Connection for O signal from thermostat
L
This connection is a field termination for use in connecting L lines of thermostat and outdoor unit together. There is no
connection of this terminal with control circuity.
Y1
Connection for low-speed compressor operation
R
Connection for R signal to thermostat (24 vac)
C
Connection for C terminal to thermostat (24 vac common)
Table 5—Connections and Connector (FK4B)
TYPE
CONNECTION
TYPE
CONNECTOR
PIN NO.
DESCRIPTION
Heater
Connection
12-Pin
Pin 1
Common to E screw terminal
Pin 2
Common to W2 screw terminal
Pin 3
Common to C screw terminal, SEC1 terminal, and chassis ground
Pin 4
Common to C screw terminal, SEC1 terminal, and chassis ground
Pin 5
No connection
Pin 6
Common to W3 screw terminal
Pin 7
Common to M2 and T3 quick-connects, 230 vac input
Pin 8
No connection
Pin 9
Common to M1 and T1 quick-connects, 230 vac input
Pin 10
No connection
Pin 11
No connection
Pin 12
No connection
ICM2 Motor
7-Pin Header
Pin 1
Diode OR output of E or W3 or W2 thermostat signals
Pin 2
Thermostat G signal
Pin 3
Common to C, SEC1, and chassis ground
Pin 4
Common to C, SEC1, and chassis ground
Pin 5
Common to R and SEC2 (via 5-amp fuse)
Pin 6
Thermostat Y/Y2 signal
Pin 7
Thermostat Y1 signal
24