2
INSTALLATION
MOUNTING AND WIRING
NOTE:
All wiring should be installed according to local and
national electrical codes and ordinances.
1. Disconnect electrical power and gas supply to unit, then
remove unit access panel
2. Mark and disconnect all wires from the existing control,
then remove existing control
3. Refer to the Harness Descriptions, Harness Table, Wiring
Diagram, and Dipswitch Configurations to connect and
setup new control board to unit
Control
Brand
Blower
Thermostat
"A"
ICP Flip
"B"
Old Style
Carrier
"C"
Control
CEPL130948-01
Carrier
ECMx
CEPL130948-01
CEPL130948-02
CEPL130948-02
HK42FZ028
HK42FZ028
HK42FZ040
HK42FZ040
325879-751
PSC / VS*
325879-751
CEPL130455-01
CEPL130455-01
HK42FZ017
HK42FZ017
HK42FZ005
HK42FZ005
HK42FZ010
HK42FZ010
HK42FZ015
HK42FZ015
ICM2807
ICM
PSC / VS*
ICM2807
1184408
ICP
ECMx
1184408
CEPL131043-01
CEPL131043-01
HK42FZ041
HK42FZ041
1172551
PSC Only
1172551
1172809
1172809
CEPL130591-01
CEPL130591-01
CEPL130591-41
CEPL130591-41
HK42FZ019
HK42FZ019
HK42FZ020
HK42FZ020
*NOTE:
For Variable Speed units, plug existing 6-pin connector to “VS MOTOR” PL3/4 on new control board.
Set blower
type dipswitch to PSC / VS.
The green DEHUM wire from the VS motor connects to G terminal (green wire of “A” harness)
if previously connected to G on old style control board. Cut the existing ¼” spade terminal off and strip the wire to do
this. Alternately, the green DEHUM wire from the VS motor may have been spliced to a thermostat wire connected to the
Thermidistat™ DHUM terminal. Leave it this way and DO NOT connect it to the DHUM terminal (black wire of “A” harness) on
new control board. The 2 white wires previously connected to the ¼” HUM spade terminal of the old style control board need
to be connected to the ¼” HUM 24V terminal on the new control board.
HARNESS DESCRIPTIONS
•
“A”
Used to make the thermostat I/O connections, using
the included wire nuts. Plugged into connector
P5
on the
new control board.
•
“B”
Used to convert the inline main harness wiring from
the Carrier pinout to the reversed ICP pinout. Carrier
pin 1 = ICP pin 12, Carrier pin 2 = ICP pin 11 and so on.
Plugged into connector
PL1
on the new control board,
factory wiring then plugs into other end. For ICP PSC
controls only,
NOT REQUIRED
for ICP ECMx controls.
•
“C”
Used with old style Carrier furnaces to convert block
style connectors to inline style. Plugged into connectors
PL1
,
PL2
, and
2 NEUTRAL ¼” Spades
on the new
control board.
HARNESS TABLE
