5396714-BUM-C-0919
Johnson Controls Ducted Systems
3
SECTION IV: FURNACE OPERATION
CIRCUIT BREAKERS
Your electric furnace is equipped with a unique safety feature: circuit
breakers. These circuit breakers are located behind the door of the fur-
nace near the bottom of the furnace. See Figure 1. If a component fails
inside the furnace, the circuit breakers prevent damage that can be
caused by an electrical short.
If the breakers trip, follow these steps to reset them:
1. Turn off the power to the furnace at the circuit breaker panel in the
home.
2. Remove the furnace door and reset the circuit breaker in the fur-
nace.
3. Reinstall the furnace door and turn the power back on at the circuit
breaker panel in the home.
Note:
If the circuit breakers trip again, there is a problem in the furnace.
Contact a service technician. A list of authorized service centers is pro-
vided with every furnace. Use this for assistance in obtaining service for
your furnace.
LUBRICATION
The blower motor bearings are factory sealed. Additional lubrication is
not required.
BLOWER ASSEMBLY
Every electric furnace comes equipped with a blower capable of operat-
ing a heat pump or air conditioner. With the addition of the proper heat
pump, you can avail of comfort and savings throughout the year. An air
conditioner also works with your furnace and can provide cooling in
summer at a very low operating cost.
AIR FILTER
The filter supplied with the furnace is a throw-away filter. Clean filters
frequently. Shake out all loose dirt, and use a vacuum cleaner for addi-
tional cleaning. This method of cleaning prolongs filter life. Change fil-
ters regularly because clean filters provide added comfort, provide a
better and cleaner environment, and increase the efficiency of the fur-
nace.
FILTER LOCATION:
For the downflow furnace, you must remove the
front panel of the furnace to gain access to the filter. See Figure 1. For
the upflow furnace, the filter is located behind the return air grill, adja-
cent to the furnace closet or any other location in the return air.
RETURN AIR
Return air must be provided back to the circulating blower to provide air
distribution. DO NOT OBSTRUCT ANY RETURN AIR GRILLE. This
causes the furnace heating elements to cycle off and on repeatedly.
ABSENCE FROM HOME
The power supply to your furnace is equipped with either a fused or
breaker type disconnect. If an overload occurs, this interrupts the oper-
ation of your furnace until it is reset or the fuse is replaced. Do not
assume that the furnace can operate unattended for long periods of
time, especially if there is a possibility of damage to your property due
to freezing. If you are away from home for a period, arrange for some-
one to check your home regularly (daily or every second day).
PREPARATION FOR HEATING SEASON
At the beginning of each heating season:
1. Replace filters as outlined previously in this document. Clean dust
and lint from in and around the furnace. Clean dust and lint from the
blower and the blower compartment.
2. If the furnace fails to operate properly:
a.
Ensure that electrical power is being supplied to the furnace.
Check the main household power supply.
b.
If the furnace still fails to operate, shut off the furnace and
contact your service technician.
YOUR AUTHORIZED SERVICE TECHNICIAN
It is important to service your furnace. If the unit gives any indication of
improper operation, call your authorized service technician. If a service
technician performs routine care of your furnace, they can identify
potential problems and correct them. Preventive maintenance allows
you to operate your furnace with minimum concern and helps to prolong
furnace life.
WARNING
You must first de-energize the furnace at the main household power
supply and lock it.
!
NOTICE
Be sure electrical supply to furnace is turned off at the household
service box and furnace circuit breakers before cleaning.
