4
C.
If the existing
Indoor Coil Thermistor
(with the
RED
wires) was connected to the board by a plug-on
connector, reconnect it to the new board on the
ICT
(red) terminals. If the previous board used indoor coil
bi-metals, remove and discard the bi-metal devices.
The access door will need to be removed on the indoor
coil to gain access to the bi-metal. See Figure 6. The
Indoor Coil Thermistor will need to clip on the vertical
section of the 90-degree bend of the inlet line to the
indoor coil. See Figure 7. Connect the Indoor Coil
Thermistor to the board as noted above.
D. If the existing
Outdoor Coil Thermistor
(with the
BLUE
wires) was connected to the board by a plug-
on connector, reconnect it to the new board on the
OCT
(blue) terminals. If the previous board used
indoor coil bi-metals, remove and discard the bi-metal
devices. The Indoor Coil Thermistor will need to clip on
the crossover tube shown in Figure 8. There will be
two clips supplied in the kit for the Blue Thermistor.
One clip as supplied on the sensor will fit 5/16” tubing
used on the bent coil, and an additional clip (loose in
the bag) will fit 3/8” tubing used on the flat slab coil.
If you have a slab coil, you will need to remove the 5/16”
clip from the sensor and replace it with the 3/8” tube
clip. Connect the Outdoor Coil Thermistor to the board
as noted above. Outdoor Coil Thermistors are only
used on Heat Pump models;
DO NOT INSTALL THIS
SENSOR IF THE UNIT IS NOT A HEAT PUMP.
Figure 7
INDOOR COIL THERMISTOR - RED
All Units
Connect to ICT on Control Board
Cross over tube
for 9,12 and 15k
or center tube for
7,000 BTU
Figure 8
17. If the unit has a condensate pump, go to step 18. If the unit
has a power vent or power door, go to step 19. Otherwise
proceed with step 20. Refer to wiring diagrams in back of
manual.
18.
Condensate Pump Units Only
(See Wiring Diagram Page 10
Reconnect the wires across the top terminals of the
control board. Connect as follows:
Red 33 to Line 1
Brown 34 to Heater 1
Brown 34 to Heater 2
Power cord (or black 18) to Line 2
Violet 12 and Yellow 3 to Compressor
Black 16 to Fan High
Red 17 to Fan Low
19 from reversing valve and Yellow 1 to Rev. Valve.
Connect the yellow 5 wire to the 230 or 265-volt terminal
as applicable using the piggyback terminal on the yellow
5 wire. Go to step 21.
