System information

8 Numbers in [brackets] are for 50 Hz international systems. EAC-SF-13
Service Facts
ELECTRICAL CONNECTIONS TO A COMMUNICATING SYSTEM FURNACE
▲
WARNING
!
HAZARDOUS VOLTAGE! DISCONNECT ALL ELECTRIC
POWER, INCLUDING REMOTE DISCONNECTS BEFORE
SERVICING. FOLLOW PROPER LOCKOUT/TAGOUT
PROCEDURES TO ENSURE THE POWER CAN NOT BE
INADVERTENTLY ENERGIZED. FAILURE TO DISCONNECT
POWER BEFORE SERVICING COULD RESULT IN DEATH
OR SERIOUS INJURY.
PROCEDURE:
1. Remove electrical power going into the furnace.
2. Open blower door to upflow or downflow furnace.
3. Disconnect all wires on the 35VA transformer.
4. Remove the 35VA transformer from the IFC platform.
5. Mount the 50 VA transformer supplied in the packaging with
the air cleaner onto the IFC platform where the 35VA
transformer was previously located. Use the sheet metal
screws supplied with the air cleaner to mount the 50VA
transformer. Reconnect the 115V and 24V wires that were
connected to the 35VA transformer onto the 50 VA
transformer.
6. Connect Red stripped wire to "R" terminal on the furnace control
board.
7. Connect Blue stripped wire to "B" terminal on the furnace control
board.
8. Connect Brown stripped wire to "D" terminal on the furnace
control board.
9. Attach the black stripped wire from the air cleaner wiring harness
directly to ground with a screw in the chassis.
10. The green and white wires on the air cleaning wiring harness are
unused in this application and should be insulated.
11. Replace door on furnace.
12. Reconnect electrical power to the furnace.
13. Check both furnace and air cleaner operation per the furnace and
air cleaner installer guides.