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4 - After approximately 30 seconds (pre purge period)
the LED will fast ash indicating the gas valve is
powered.
5 - After 10 seconds, the gas valve closes and steps 4
and 5 will repeat two additional times before locking
out the gas valve, which will be indicated by two
ashes on the LED.
6 - To restart the system, de-energize the thermostat call
for heat and follow the operating instructions under
“Unit Start-Up and Operation.“
REPAIR PARTS
When ordering repair parts, include the complete
unit model number listed on the unit rating plate.
For example: LF25-45A-1. Contact the installing
dealer, or visit www.lennox.com or call 1-800-9LEN-
NOX for a list of the Lennox dealers in the area. Include manufacturer’s or distributor’s name and address. It
is a requirement in the Z83.8 standard.
Electrical Connections Tight?
START-UP AND PERFORMANCE CHECKLIST
Job No.:
City:
City:
Serial No.:
Date:
State/Province:
Service Technician:
Air Shutters Properly Adjusted (If Installed)?
Flue Connections Tight?
THERMOSTAT
Calibrated?
Heat Anticipator Properly Set?
Level?
Manifold Pressure
Blower Motor Amps
Blower Motor Lubrication O.K.?
Gas Piping Connections Tight & Leak-Tested?
State/Province:
Fan Timer Operation Checked?
w.c.
Job Name:
Job Location:
Installer:
Unit Model No.:
Supply Voltage
Furnace Btu Input
Line Pressure
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