Page 29
31-5000731 Rev. 0
Wiring and Sequence of Operation
Figure 27. Typical Field Wiring Diagram
NOTES:
1.
PRESS AND RELEASE FAULT CODE HISTORY BUTTON TO
DISPLAY FAULT CODES. TO ERASE CODES, PRESS AND HOLD
BUTTON IN FOR MORE THAN 5 SECONDS.
2.
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED WITH WIRING MATERIAL HAVING A TEMP. RATING OF AT LEAST 90
º
C.
3.
PROPER POLARITY MUST BE OBSERVED FOR FIELD LINK VOLTAGE SUPPLY; IGNITION
CONTROL WILL LOCK OUT IF POLARITY IS REVERSED.
4.
FOR TEMPORARY SERVICE REPLACEMENT OF CIRCULATING BLOWER MOTOR WITH
PSC MOTOR, CONNECT DESIRED SPEED TAP TO “EAC” TERMINAL AND NEUTRAL TAP
TO NEUTRAL TERMINAL ON IGNITION CONTROL.
5.
DO NOT CONNECT C (COMMON) CONNECTION BETWEEN INDOOR UNIT AND
THERMOSTAT EXCEPT WHEN REQUIRED BY THE INDOOR THERMOSTAT. REFER TO
THE THERMOSTAT INSTALLATION INSTRUCTIONS.
6.
CHECK CODES FOR PROPER WIRING AND CIRCUIT PROTECTION BEFORE
INSTALLATION.
CONNECTION DIAGRAM
PROPER POLARITY MUST BE OBSERVED FOR FIELD LINE
VOLTAGE SUPPLY. IGNITION CONTROL WILL LOCK OUT IF
POLARITY IS REVERSED
FOR TEMPORARY SERVICE REPLACEMENT ON CIRCULATING
BLOWER MOTOR WITH PSC MOTOR, CONNECT MOTOR
LEADS TO “EAC” TERMINALS ON IGNITION CONTROL
WARNING -
ELECTRIC SHOCK HAZARD, CAN CAUSE INJURY OR
DEATH. UNIT MUST BE GROUNDED IN ACCORDANCE WITH
NATIONAL AND LOCAL CODES.
NOTE -
IF ANY WIRE IN THIS APPLIANCE IS REPLACED, IT MUST BE
REPLACED WITH WIRE OF LIKE SIZE, RATING, INSULATION
THICKNESS, AND TERMINATION
