Operating instructions

Inspect the combustion area and vent system before each

heating season. An accumulation of dirt, soot, or rust can

mean a loss of efﬁciency and improper performance. Build-

ups on the main burners can cause faulty ﬁring. This “delayed

ignition’’ is characterized by an alarmingly loud sound.

NOTE:

If your furnace makes a loud noise when the main

burners are ignited, shut down the furnace and call your ser-

vicing dealer.

Use your ﬂashlight and follow these steps for inspecting the

combustion area and vent system of your furnace:

1. Turn off electrical supply to the furnace and remove

the access door. (See Fig. 7 and 8.)

2. Carefully inspect the gas burner for dirt, rust, or scale

(See Fig. 17.) Inspect the elbow, ﬂue connection

area, and the vent pipe for rust.

NOTE:

If dirt, rust, soot, or scale accumulations are found, call

your servicing dealer. DO NOT OPERATE THE FURNACE.

3. Inspect the vent pipe for a sag, holes, or a disconnection.

A horizontal vent pipe must slope upward away from fur-

nace. If rusty joints or seams, or signs of water leakages

are found, call your dealer for service.

4. Restore electrical power to the furnace. (See Fig. 12.)

5. Start the furnace and observe its operation. If possible,

watch the burner ﬂames. Are they burning bright blue?

If not or if you suspect some other malfunction, call

your servicing dealer.

6. Replace the access door. (See Fig. 11.)

CAUTION

If dirt, rust, soot, or scale accumulations are

found, call your servicing dealer. DO NOT OPER-

ATE THE FURNACE.