Inspect furnace return air duct connection to ensure duct is sealed to the furnace and terminates outside the space containing the furnace.
Inspect the physical support of the furnace to guarantee that it is sound without sagging, cracks or gaps around base and it maintains seal between base and support.
Inspect and clean the condensate traps and drain. Blower
Check and clean blower wheel for any debris. Blower mo1 tor is
Burner Flame
Set thermostat to call for heat. Allow unit to operate for a few minutes to establish normal burning conditions. Check burner flame. Flame should be predominantly blue and strong in appearance.
CAUTION
Periodically look through the flame sight glass to check the burner flame.
Contact your Lennox dealer for a periodic unit inspection by a qualified service technician.
Service Reminder
Call your Lennox service technician if unit is inoperative. Before calling, always check the following to be sure ser1 vice is required:
1 - Check that electrical disconnect switches are ON.
2 - Check room thermostat for proper setting.
3 - Replace any blown fuses or reset circuit breakers.
4 - Gas valve should be ON.
5 - Air filter should not be plugged limiting air flow.
6 - Is gas turned on at meter?
7 - Is manual main
Safety Precautions
If you discover any of the following, shut down your unit, and contact an independent Lennox dealer for an inspection by a qualified technician.
D If you repeatedly hear any new or unfamiliar sounds while your unit is operating, there may be a problem. For example, poorly performing burners can produce unfa1 miliar noises.
DIf you smell any unusual odors, your unit may be operat1 ing improperly. For example, units can give off unfamil1 iar odors if components are required to operate in ab1 normal conditions.
DLook for visible signs of a malfunctioning unit. Examples include unusual amounts of condensate on windows in1 side your house, visibly burnt components, or unusual accumulation of rust in the unit.
DIf you experience headache, nausea, fatigue, or dizzi1 ness, the cause could be exposure to carbon monoxide gas. This is often misdiagnosed as the flu because symptoms are similar. If you suffer from
Your vigilance may pay off in early detection of a problem before either personal injury or property damage occurs. Do not hesitate to contact a qualified service technician as an investment in your well being.
Planned Service
You should expect a service technician to check the follow1 ing items during an annual inspection. Power to the unit must be shut off for the service technician's safety.
Burners- Must be inspected for rust, dirt, or signs of water. Vent pipe - Must be inspected for dirt, damaged or sagging unsupported pipe, or disconnected joints.
Unit appearance - Must be inspected for rust, dirt, signs of water, and burnt or damaged wires components. Blower access door - Must be properly in place and pro1 vide a seal between the return air and the room where the furnace is installed.
Return air duct - Must be properly attached and provide an airtight seal to unit.
Operating performance - Unit must be observed during operation to monitor proper performance of the unit and the vent system.
Combustion gases - Flue products must be analyzed and compared to the unit specifications.
Problems detected during the inspection may make it nec1 essary to temporarily shut down the furnace until the items can be repaired or replaced.
Pay attention to your furnace. Situations can arise be1 tween annual furnace inspections that may result in unsafe operation. For instance, items innocently stored next to the air inlet may obstruct the combustion air supply. This could cause incomplete combustion and the production of car1 bon monoxide gas.
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