3
OUTDOOR AIR SENSOR
CONNECTIONS
DISCHARGE AIR
SENSOR CONNECTIONS
LENNOX COMMUNICATING
CONNECTIONS
NON-COMMUNICATING TERMINALS
STATUS LED
COMMUNICATION INDICATOR
LED
DUAL-FUEL
CONNECTIONS
UNIT TYPE JUMPER
TERMINALS
HEAT STAGES
JUMPER TERMIINALS
HEAT PUMP CAPACITY
JUMPER TERMINALS
3 AMP FUSE
Figure 1. Terminals and LEDs
CAUTION
Electrostatic discharge can aect electronic components. Take precautions during unit installation and service to protect the unit’s electronic controls.
Precautions will help to avoid control exposure to electrostatic discharge by putting the unit, the control and the technician at the same electrostatic
potential. Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface before performing any service procedure
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