Lennox G71MPP Unit Information

Page 58
CALL FOR HEAT SATISFIED
1st Stage Heat
2nd Stage Heat
2nd Stage
Call for Heat
satisfied?
NO
1st Stage
Call for Heat
satisfied?
Gas valve
De−Energized
YES
NO
Wait for Call −
2−StageThermostat
Wait for Call −
Single StageThermostat
1 4
3A 3B
YES
OR
Combustion Air Inducer
switched to 70% rate speed
Adjust Indoor Blower
to appropiate speed
Combustion Air Inducer OFF
after 20−Second Post Purge
Indoor Blower OFF
after OFF Delay
RUN MODE (2 STAGE THEREMOSTAT)
1ST OR 2ND STAGE CALL FOR HEAT ALL
INPUTS MONITORED (LIMIT, PRESSURE,
CALL FOR HEAT / COOL, FLAME LEVEL)
RUN MODE (SINGLE STAGE THERMOSTAT)
ALL INPUTS MONITORED (LIMIT, PRESSURE,
CALL FOR HEAT / COOL, FLAME LEVEL)

Lennox G71MPP Specifications

General

Blower Motor	Variable-speed
Energy Star Certified	Yes
Warranty	Limited lifetime warranty on heat exchanger; 10-year limited warranty on covered components
Fuel Type	Natural gas
Ignition Type	Direct spark ignition