K.
Low-Voltage Circuit Fusing and Reference
The low-voltage circuit is fused by a board-mounted 5-amp
automotive-type fuse placed in series with transformer SEC2 and
R circuit. The C circuit of transformer is referenced to chassis
ground through a printed-circuit run at SEC1 connected to metal
standoff marked.
NOTE:
The PCB must be mounted with 2 screws and motor
ground lead secured to blower housing or erratic motor operation
can result.
L.
Transformer, Motor, and Electric Heater Power
Connections
Transformer high voltage supplied from electric heater package or
high voltage leads through 12-pin heater connector plug/recp 2.
The ICM2 power connections are made at the transformer primary
terminals. The transformer secondary connections are made at
SEC1 and SEC2 connectors.
XII.
EASY SELECT CONFIGURATION TAPS
The Easy Select taps are used by installer to configure system. The
ICM2 uses selected taps to modify its operation to a pre-
programmed table of airflows. Airflows are based on system size
or mode of operation and those airflows are modified in response
to other inputs such as the need for de-humidification. (See Fig.
24.)
The FK4C and FV4A Fan Coils must be configured to operate
properly with system components with which it is installed. To
successfully configure a basic system (see information printed on
circuit board located next to select pins), move the 6 select wires
to pins which match components used, along with homeowner
preferences.
A.
Auxiliary Heat Range
The installer must select the auxiliary heat airflow approved for
application with kw size heater installed. If no heater is installed,
Fig. 24—Easy Select Board
A96430
YYWWX
AUX/HEAT KW/CFM
AC/HP SIZE
AC/HP CFM ADJUST
ON/OFF DELAY
CONTINUOUS FAN
HEATER/MOTOR
AUX1
HUM1
AUX2
24VAC
HUM2
LO
MED
HI
YEL
SYSTEM TYPE
SEC1
®
®
EASY SELECT
SEC2
J1
5 AMP.
MAX.
F1
D4
D5
D2
D3
D1
R1
R2
CES0130035-00
5
STI
J2
YEL
PL1
GRY
WHT
BLK
ORN
BLU
VIO
0-30
1075
0-20
875
0-10
725
0-5
625
036
030
024
018
AC
HP-COMFORT HP-EFF
NOM
LO
HI
0
90
30
90
0
0
ENH
D
H
R
W
1
W
2
Y
1
Y/Y
2
G
O
C
1
—30—
