Johnson Controls EB, EB10D, EB12D, EB15D, EB17D Service Manual
...
USER’S INFORMATION,
ISO 9001
Certified Quality
Management System
MAINTENANCE AND
SERVICE MANUAL
DOWNFLOW/UPFLOW
ELECTRIC FURNACE
MODELS: EB
TABLE OF CONTENTS
CONTACT INFORMATION FOR USA . . . . . . . . . . . . . . . . . . . . . . .1
CONTACT INFORMATION FOR CANADA . . . . . . . . . . . . . . . . . . .1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
TO OPERATE FURNACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
TO SHUT FURNACE OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
LIMIT CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
BLOWER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
FURNACE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
CIRCUIT BREAKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
BLOWER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
AIR FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
RETURN AIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
WHILE YOU’RE AWAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
AT THE BEGINNING OF EACH HEATING SEASON . . . . . . . . . . . .3
YOUR AUTHORIZED SERVICE TECHNICIAN . . . . . . . . . . . . . . . .3
OPTIONAL AIR CONDITIONING ACCESSORIES . . . . . . . . . . . . . .3
HIGH PERFORMANCE BLOWER ACCESSORY PACKAGE . . . . .3
REPAIR PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
CONTACT INFORMATION FOR USA
• Contact us by mail:
DISTRIBUTED BY:
StyleCrest
801 W. 37th Street
Building #7
Wichita, Ks 67219
MANUFACTURED BY:
Johnson Control, Inc.
5005 York Drive
Norman, OK 73069
The manufacturer recommends that the user read all sections of this manual and keep the manual for future reference.
FOR YOUR SAFETY - Do not store or use gasoline or other fla m-
mable vapors and liquids in the vicinity of this or any other appliance.
For personal safety be sure to turn the electrical power OFF at
the household service box and at the furnace before attempting any service or maintenance operations. Homeowner
should never perform any maintenance which requires opening the furnace electrical panel.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
CONTACT INFORMATION FOR CANADA
• Go to website at www.york.com click on “contact”, then click on
“contact form” and follow the instructions.
• Contact us by mail:
Johnson Controls, Inc.
Consumer Relations
5005 York Drive
Norman, OK 73069
This furnace and its components, including the air conditioning coils
and blowers listed on the A/C accessory sticker were listed in combination as a system by Underwriters Laboratories.
Use of other components not tested in combination with this furnace
may make the equipment in violation of State Codes, may create a
hazard, and may ruin the equipment.
In addition, the National Manufactured Housing Construction and
Safety Standards Act and its Regulations require the use of components listed or certified by a nationally recognized testing laboratory
in all manufactured homes built and sold subject to that act.
SECTION I: INTRODUCTION
To avoid the possibility of electrical shock do not open electrical box
panels.
Johnson Controls Unitary Products 570930-BUM-C-0112
570930-BUM-C-0112
NOTICE
NOTICE
U
L
R
FILTER (IN
DOWNFLOW
ONLY) *
CAVITY
FOR
COIL
THERMOSTAT
WIRES
CIRCUIT
BREAKERS
ELECTRIC
PANEL
FIELD WIRING
PROTECTIVE
SHIELD
Filter in the front panel when louvered doors
are used. Filter located in base for upflow units.
*
SECTION II: TO OPERATE FURNACE
1. Be sure electrical power to furnace is turned on at the house-hold
service box.
2. Set wall thermostat to the desired temperature.
3. If furnace is equipped with Air Conditioning, the System Switch,
located at the wall thermostat, must be turned to HEAT in order for
the furnace to operate in the heating model.
If you have an air conditioner which does not use the furnace blower
for air distribution and operates completely independent of the furnace, the thermostat system must have an interlock to prevent the
furnace and air conditioner from operating at the same time. Such
operation could cause equipment damage, energy waste and overheating of the home.
The interlock system usually contains a heat-cool switch which must be
turned to either HEAT or COOL to activate either heating or cooling
operation.
If an interlock system has not been provided, the electrical supply to the
furnace must be turned OFF at the household service box, when the air
conditioner is being used. When operating the furnace, the electrical
supply to the air conditioner must be turned OFF.
TO SHUT FURNACE OFF
1. Turn thermostat to its lowest setting.
FIGURE 1: Component Locations
SECTION IV: FURNACE OPERATION
CIRCUIT BREAKERS
Furnace will still operate if room temperature falls below thermostat
setting.
2. For complete shut-down, turn off electrical power at the household
service box.
SECTION III: SEQUENCE OF
OPERATION
When room thermostat calls for heat, 24-volt power is supplied to the
heating element switches. As soon as the first heating element switch
closes, the blower starts and power is supplied to the first heating element. Each additional element is staged on in successive intervals.
When the room thermostat is satisfied and no more heat is required, the
elements sequence off in the reverse order and the blower will then turn
off.
LIMIT CONTROLS
Each element has an automatic limit switch which is wired into the circuit and shuts off power to that element if the heat at that point exceeds
the allowable maximum heat.
BLOWER REMOVAL
Your electric furnace is equipped with a unique safety feature - circu it
breakers. These circuit breakers are located behind the door of the furnace, near the bottom of the furnace. See Figure 1. If a component
should fail inside the furnace, the circuit breakers will prevent damage
that can be caused by an electrical short. If the breakers ever trip, they
can be reset by first turning off the power to the furnace at the home's
circuit breaker panel. See Warning below. Then remove the furnace
door and reset the circuit breaker in the furnace. Re-install the furnace
door and turn the power back on at the home's breaker panel. If for
some reason these circuit breakers should trip again, a service technician should be contacted as a problem exists inside the furnace. A list
of authorized service centers is provided with every furnace and will
assist you in obtaining service for your furnace.
Y ou must first de-energize the furnace at the main household power
supply and lock it.
LUBRICATION
The blower motor bearings are factory sealed. Additional lubrication is
not required.
BLOWER ASSEMBLY
Only authorized service technicians should remove the blower.
To remove blower from furnace, turn off power at household service
box, turn furnace circuit breakers OFF. Disconnect wiring to blower, and
remove five (5) screws holding blower in furnace and slide blower out
from front of the furnace. See Figure 1.
Re-install blower in reverse order when assembling back into furnace.
2 Johnson Controls Unitary Products
Every electric furnace comes equipped with a blower capable of operating a heat pump or air conditioner. With the addition of the proper heat
pump, you can enjoy comfort and savings all year long. An air conditioner will also work with your furnace and will provide cool summer
days, at a very low operating cost.
570930-BUM-C-0112
NOTICE
NOTICE
AIR FILTER
The filter supplied with the furnace is a throw-away type. Filters need to
be cleaned frequently. Shake out all loose dirt, and use vacuum cleaner
to clean additionally. This method of cleaning will prolong life of filters.
DO change filters often since clean filters not only provide added comfort, better and cleaner environment, but increase the efficiency of the
furnace as well.
FILTER LOCATION: The furnace's front panel must be removed to gain
access to the filter of the downflow furnace. (See Figure 1.) However,
the filter for the upflow furnace* is located behind the return air grill,
adjacent to the furnace closet or any other location in the return air.
RETURN AIR
Return air must be provided back to the circulating blower in order to
provide air distribution. DO NOT OBSTRUCT ANY RETURN AIR
GRILLE. To do so will cause the furnace heating elements to cycle off
and on repeatedly.
WHILE YOU’RE AWAY
The power supply to your furnace is equipped with either a fused or
breaker type disconnect. In case of an overload, this will interrupt the
operation of your furnace until it is reset or fuse replaced. For this reason it is never practical to assume that the furnace will operate unattended for long periods of time, especially if there is a possibility of
damage to your property because of freezing. So, if you plan to be
away, arrange for someone to check your home every day or so.
AT THE BEGINNING OF EACH HEATING SEASON
Be sure electrical supply to furnace is turned off at the household
service box and furnace circuit breakers before cleaning.
1. Replace filters as discussed previously. Clean dust and lint from in
and around the furnace. Clean dust and lint from blower and blower
compartment.
2. If furnace fails to operate properly:
a. Be sure electrical power is being supplied to furnace. Check
main household power supply.
b. If, after following this procedure, the furnace still fails to oper-
ate, shut off furnace and contact your service technician.
YOUR AUTHORIZED SERVICE TECHNICIAN
Your furnace's best friend is your service technician. If the unit gives
any indication of improper operation, call your authorized service technician. If the service technician is allowed to perform the normal routine
care of your furnace, many times he can detect potential difficulties and
make corrections before trouble develops. Preventive maintenance of
this type will allow you to operate this unit with a minimum of concern
and pay for itself in added years of comfort.
OPTIONAL AIR CONDITIONING ACCESSORIES
This furnace is equipped with a blower and control system to add-on air
conditioning and heat pumps to specified sizes. Insulation and coil shelf
kit (3500-8941 for downflow or 3500-8961/A for upflow) must be
installed when adding on such remote air conditioning systems.
If the controls are located at the top of the unit, the furnace is an
upflow furnace and the airflow is forced up through the furnace and
into the airways.
Failure to install this insulation and coil shelf kit could result in damage to equipment and/or personal injury. Liability and warranty from
the manufacturer could also be void.
HIGH PERFORMANCE BLOWER ACCESSORY
PACKAGE
All EB furnaces are equipped with a blower and control system to addon air conditioning and heat pumps to specified sizes. If the requirement is to achieve more air flow or cooling than specified, then the
blower inside the furnace has to be replaced with an accessory blower
package 3500-7901*. This accessory blower package would deliver air
conditioning up to 5-tons, and heat pump up to 4-tons. Accessory package (3500-7901*) includes blower, insulation, coil shelf, trap, clamps,
etc. Please refer to the installation instructions packed with the accessory package for more information.
All areas around the line sets, drain hoses and other openings in the
furnace should be sealed airtight. Use some moldable compound or
caulking to seal the area. Failure to do so may result in loss of performance and premature compressor failure.
Johnson Controls Unitary Products 3
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