MORTEX E30B3 Guide

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 1
DOWNFLOW & UPFLOW ONLY For Installation In:
SINGLE & TWOSTAGE ELECTRIC HEAT FURNACE 1. Manufactured (Mobile) Homes 2. Recreational Vehicles
3. Modular Homes & Buildings 4.Residential Homes
For installation only in HUD manufactured home per Construction Safety Standard 24 CFR Part 3280
MODELS: E30 SERIES
USERS INFORMATION MANUAL
4 – Furnace Startup & Shutdown Instructions........................................ 4
5 – Homeowner/User Maintenance............................................................ 5
5 – Trouble Shooting.....................................................................................10
6 – Blower Performance...............................................................................12
7 – Accessories ................................................................................................13
8 – Replacement Parts..................................................................................14
9 – Constant Torque Motor Terminals.....................................................10
10 – Heater Contactor Terminals.................................................................11
11 – Blower Mounting Plate and Screw Locations...............................11
12 – Replacement Parts Drawing for E30B3 Models ...........................14
13 – Replacement Parts Drawing for E30B4 Models............................15
14 – Replacement Parts Drawing for E30B5 Models............................16
15 – Replacement Parts Drawing for E30B6 Models............................17
5 – Replacement Parts List for E30B4 Models ................................................. 15
6 – Replacement Parts List for E30B5 Models ................................................. 16
7 – Replacement Parts List for E30B6 Models ................................................. 17
1 – General............................................................................................................1
2 – Safety ...............................................................................................................2
3 – Homeowner/User Information...............................................................3
1 – Safety ...............................................................................................................7
2 – Furnace Maintenance ...............................................................................8
3 – Furnace Controls .........................................................................................9
4 – Sequence of Operation ............................................................................9
1. Furnace is rated for 208/240 VAC at 60 Hz.
2. All furnaces have the same cabinet size.
3. All furnaces are designed for A/C or Heat Pump operation.
4. This furnace is designed for downflow applications only.
5. This furnace must not be operated with the control box cover
and front access panel removed.
6. This furnace is listed by ETL for the United States and Canada.
7. This air handler is for use at elevations of 10,000 ft (3,048m) or less.
8. This appliance is not to be used by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given
supervision or instruction concerning use of this appliance by a
person responsible for their safety. Children must not be allowed
to play with this appliance.
USERS MUST READ ALL INSTRUCTIONS IN THIS MANUAL
THIS MANUAL MUST BE SAVED FOR FUTURE REFERENCE
1 – Circuit Breaker Locations..............................................................................3
2 – Return Air Louvered Grille ...........................................................................5
3 – Return Air Louvered Grille Air Filters .........................................................5
4 – Removing/Replacing Coil Cabinet Grille/Door ......................................6
5 – Uncased Coil Top Return Air Filter Location............................................6
6 – Control Box Cover....................................................................................................8
7 – Blower Assembly and Mounting Screw Location.....................................8
8 – Component Locations............................................................................... 9
1 – Constant Torque Motor Terminal Connections....................................... 10
2 – Blower Performance ............................................................................................ 12
3 – Accessories............................................................................................................... 13
4 – Replacement Parts List for E30B3 Models ................................................. 14
The following list includes important facts and information regarding the electric furnace and its inclusions
Manufactured and Distributed by: Mortex Products, Inc. www.mortx.com
501 Terminal Rd
Fort Worth, TX 76106
LIST OF SECTIONS - USERS INFORMATION MANUAL
LIST OF SECTIONS -SERVICE AND MAINTENANCE MANUAL
LIST OF FIGURES
LIST OF TABLES
SECTION 1: GENERAL
CONTACT INFORMATION
9700771
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in
serious injury, death, or property damage.
A re or electrical hazard may result causing property
damage, personal injury or loss of life.

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 2
This is a safety alert symbol. When this symbol is seen on labels or
in manuals, be alert to the potential for personal injury. Understand
and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER: Indicates an imminently hazardous situation, which if
not avoided, will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation, which if not
avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation, which if not
avoided, may result in minor or moderate injury.It is also used
to alert against unsafe practices and hazards involving property
damage.
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death, or property damage.
A re or electrical hazard may result causing property damage,
personal injury or loss of life.
Do not store or use gasoline or other ammable vapors and liquids
in the vicinity of this air handler or any other appliance.
Do not use this air handler if any part has been under
water. A flood damaged air handler is extremely dangerous.
Attempts to use the air handler can result in a fire.
A qualified contractor, installer, or service agency must be
contacted to inspect the air handler for any water damage
and replace all components, control system parts, or
electrical parts that have been damaged. If enough damage
is present, the air handler may need to be replaced.
Any adjustment, service or maintenance by the homeowner
and/or user may create a condition where the operation of
the product could cause personal injury or property damage.
Only qualified service personnel, a contractor, or an installer
may refer to the service and maintenance section of this
manual for assistance or for additional service or repair
information on this air handler.
This product requires periodic routine maintenance and
cleaning of the exterior surfaces by the homeowner or user
to remove dust and debris. Any additional service must be
performed by qualified personnel. This air handler must be
serviced and maintained as specified in these instructions
and/or to any applicable local, state, and national codes
including, but not limited to building, electrical, and
mechanical codes.
SAFETY REQUIREMENTS
1. This electric furnace must be kept clear and free of combustible
materials, gasoline and other flammable vapors and liquids.
2. Insulating materials may be combustible. The furnace must be
kept free and clear of insulating materials. The furnace area
must be examined when installed in an insulated space or when
insulation is added to be sure that the insulation material has
been kept away from the furnace.
3. Follow the instructions in Section 4: Furnace Startup and
Shutdown in this manual to properly start up or shut down
this furnace.
4. If overheating occurs, turn off the power to the furnace and
contact a qualified contractor, installer, or service agency.
5. Never store ammable materials of any kind near your furnace.
Gasoline, solvents and other volatile liquids should be stored
only in approved containers outside the home.These materials
vaporize easily and are extremely dangerous.
6. Never store cleaning materials such as bleaches, detergents,
powder cleaners, etc. near the furnace. These chemicals can
cause corrosion of the furnace sheet metal, electric heaters,
blower, and electrical controls.
7. Never use the area around the furnace as a storage area for
items which could block or obstruct the air circulation around
the furnace. The ow of air is required for safe and proper operation.
8. Never block or obstruct air openings used for ventilation and
cooling of the furnace electrical components.
9. Refer to the furnace rating plate for the furnace model number
and specications for safe operation.
10. Provide adequate clearances for servicing the control box,
electric heating elements, and blower.
11. Failure to carefully read and follow all instructions in this
manual can result in malfunction of the furnace, death, personal
injury, and/or property damage.
12. If the furnace is installed in a residential garage, it must be
installed so that the electric heating elements are located not
less than 18 inches above the floor. The furnace must be
located or protected to avoid physical damage by vehicles.
13.These instructions cover the minimum requirements and
conform to existing national standards and safety codes. In
some cases, these instructions exceed certain local codes and
ordinances, especially those who have not kept up with
changing mobile home, modular home and HUD construction
practices. These instructions are to be followed and are the
minimum requirements for a safe installation and to preform
service or repairs on this furnace.
DANGER
SECTION 2: SAFETY

CIRCUIT
BREAKERS
CONTROL
BOX COVERS
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 3
How The Air Handler Works – Heating Cycle
How the Furnace Works
This furnace must only be installed in the downow orientation.
The furnace is equipped with the controls necessary for proper and
safe operation. Figure 1 shows the furnace in the downow position
and the location of the circuit breakers and low voltage fuse. The
furnace is equipped with a blower assembly and transformer for
no-heat models or a blower assembly, transformer, electric heat
contactors, circuit breakers, and electric heating elements for
electric heat models.
The transformer provides 24 VAC for the operation of the furnace
controls and thermostat.When the thermostat calls for heat, 24VAC
is sent through the furnace low voltage terminal block (LVTB) and
the over-temperature limits to the contactor coil which causes the
contactor contacts to close. This sends 208/240 VAC to the electric
heating elements which causing them to heat up. The furnace
blower motor is then energized on the heating speed. The blower
draws cool air from the living space, passes it across the heating
elements, and circulates the warm air through the ductwork to the
living space. When the thermostat is satised, the electric heating
elements are de-energized and the blower motor is de-energized.
The furnace is now in“standby” awaiting the next call for heat.
Visual Inspection of Furnace
The homeowner/user should visually inspect the furnace every
month for any defects or problems. The items to be inspected are:
1.The physical support of the furnace with no sagging cracks,
gaps, etc.
2.The furnace casing for any obvious signs of deterioration from
rust or corrosion.
3. The supply duct connection is sealed to the furnace casing. The
return connection (furnace base) is sealed to the floor base.
4.The furnace must be serviced by a qualified service technician
annually, preferably at the start of each heating season.
FIRE OR ELECTRICAL HAZARD
Servicing heating/cooling equipment can be hazardous due
to electrical components.
Only trained and qualified personnel can service or repair
heating/cooling equipment. The homeowner must never try
to perform service, repair or maintenance on this air handler.
Untrained service personnel can perform only basic
maintenance functions such as cleaning of exterior surfaces
and replacing the air filters ONLY!
Observe all precautions in the manuals and on the attached
labels when working on this air handler.
SECTION 3: HOMEOWNER/USER INFORMATION
Figure 1: Circuit Breaker Locations
The Service Technician
If the furnace gives any indication of improper operation, a service
technician should be called to inspect and repair the furnace. The
service technician is allowed to perform the normal routine care
of the furnace and can detect potential problems and then make
corrections before trouble develops. Preventative maintenance of
this type will allow the furnace to operate with minimal concerns
to the homeowner/user and will provide years of comfort.
Warranty and Responsibilities
It is the sole responsibility of the homeowner to make certain the
furnace has been properly installed and adjusted to operate properly.
The manufacturer warrants the furnace to be free from defects
in material or workmanship for a stated time in the warranty
agreement. The manufacturer will not be responsible for any
repair costs to correct problems due to improper setup, improper
installation, improper furnace adjustments, adding parts that
are not listed for use with this furnace, improper operating
procedures by the homeowner/user or repairs performed by the
homeowner/ user.
Examples of service calls not covered by warranty:
1. Correcting faulty duct system in the home. This can be due
to an insufficient number of ducts or ducts that are too small to
provide proper air-flow through the air handler.
2. Correcting electrical wiring problems in the supply wiring to
the air handler.
3. Resetting circuit breakers or ON/OFF switches used for servicing.
4. Problems caused by installation and operation of any outdoor
unit or air quality devices which are not approved for use
with this air handler.
5. Improper thermostat settings or calibrating the thermostat.
6. Problems caused by construction debris that has fallen into
the furnace.
7. Replacement of fuses.
8. Insufficient air-flow problems caused by dirty air filters.
9. Furnace malfunction or component premature failure caused
by restrictions in the return or supply ducts causing low air-flow.
The homeowner should establish a clear understanding of these
responsibilities with the installer and /or service company so
there will be no misunderstanding of what will be covered under
warranty later.

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 4
While Homeowner or User is Away
The furnace is equipped with safety shutoff devices which are
designed to prevent it from overheating in case of a malfunction. For
this reason, it is never practical to assume the furnace will operate
unattended for long periods of time. Examples of a malfunction
that can cause significant damage to the home would be:
1.The furnace blower motor fails and the heating elements
on the safety shutoff devices while the temperature inside
the home continues to drop. Water pipes will freeze and could
burst once their temperature falls below 32°F (0°C) resulting in
significant damage to the structure.
2. The furnace blower motor or outdoor unit fails in the summer
resulting in the temperature inside the home to rise above the
setpoint. If the temperature of the home rises above the rated
temperature of appliances, appliance failure can occur.
3. If the homeowner to be away from home for a long period of
time, they should have someone check on the home every day,
especially when the outside temperatures will be below 35°F
(1.7°C) or above 75°F (23.9°C) to ensure the furnace is operating
properly. This will help prevent water pipes from freezing or
appliances from failing.
If the Furnace Fails to Operate Properly
If any abnormalities are observed while the furnace is operating,
perform the following checks:
1. Check the setting on the thermostat to make sure the thermostat
is set above the room temperature.
2. Check to see if the electrical power is turned on at the circuit
breakers at the main electrical panel (circuit breaker box) or
check any switches that may be used for service disconnect
switches. These are often mistaken for light switches and are
turned off.
3. Make sure the air filters are clean, return grilles clean, are not
obstructed, and supply air registers are open.
4. If the cause of the malfunction is not obvious, the homeowner/
user must not attempt to service the furnace. A qualified
service company must be called to repair the furnace.
Should overheating occur turn the circuit breakers on the
control box and the main electrical service entrance (Circuit
Breaker Box) to the off position. Call qualified service
personnel to troubleshoot and repair the furnace. DO NOT
allow the furnace to continue to cycle on the limit controls.
SERVICE AGENCY INFORMATION
Fill in Below
MODEL NUMBER:
SERIAL NUMBER:
SERVICE COMPANY:
ADDRESS:
TELEPHONE (DAYTIME):
TELEPHONE (EMERGENCY):
NOTES:
If the Startup and Shutdown instructions are not followed
exactly, a fire may result causing property damage, personal
injury, and/or loss of life. Read the instructions below before
trying to start up or shut down the furnace.
SECTION 4: STARTUP AND SHUTDOWN INSTRUCTIONS
1. BEFORE OPERATING: Check around perimeter of the furnace
to make sure there are no flammable materials in the area. If
vapors of any kind are smelled, do not turn the electrical power
to the furnace on until vapors have been ventilated and
removed from the area of the furnace.
2. CHECK THE FURNACE: Visually check the furnace for loose
screws and panels that may be missing or have fallen off.
3. CHECK DUCT CONNECTIONS: Visually check the connections
of the ducts to the furnace to make sure there are no gaps or
holes and ducts are securely fastened to the furnace. Check the
furnace base for any gaps or deuteration that can cause leakage
of the return air to the furnace.
Turning On / Starting Up the Furnace
1. STOP! Read the safety information above before proceeding.
2. Set the thermostat to the OFF setting.
3. Move the circuit breakers in the main electrical panel (home
circuit breaker box) to the“OFF” position.
4. Remove furnace front access panel.
5. Move the circuit breakers located on the control box cover to
the “ON” position.
NOTE: Homeowners or furnace users must not remove the
furnace control box cover. Homeowners and furnace users
should only reset the circuit breakers located on the front of the
control box cover and in the main electrical panel (home circuit
breaker box).
6. Install the furnace front access panel.
7. Move the circuit breakers in the main electrical panel (home
circuit breaker box) to the“ON” position.
8. Set the thermostat to the desired mode and temperature setting.
When to Call for Service Assistance
Very often time can be saved if the homeowner provides the service
agency information about the furnace ahead of time. This will
enable the service agency to determine the specific components
used and possibly identify the problem and arrive with the correct
parts to fix the problem. Write down the model number, serial
number and be prepared to describe problem with the furnace
and what has already been checked.

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 5
Figure 2: Return Air Louvered Grille
Figure 3: Return Air Louvered Grille Air Filters
20” x 20” x 1” (508mm x 508mm x 25.4mm)
(2 Required)
Turning Off / Shutting Down the Furnace
1. Set the thermostat to the OFF setting.
2. Move the circuit breakers in the main electrical panel (home
circuit breaker box) to the OFF position.
NOTE: Homeowners or furnace users must not remove the
furnace control box cover. Homeowners and furnace users
should only turn the circuit breakers located on the front of the
furnace control box cover and in the main electrical panel
(home circuit breaker box) to the OFF position.
3. Remove the furnace front access panel.
4. Turn the circuit breakers located on the control box cover to the
OFF position.
5. Replace the furnace front access panel.
All appliances need maintenance at the beginning of each heating
season in order to operate properly. The annual service must be
performed by qualified service personnel. The homeowner is
expected to perform general maintenance and general cleaning of
the exterior surfaces, clean dust from the louvers in the return air
grille and replacement of the air filters. Air filters must be checked
every month and replaced as needed. Homeowners/users must
be instructed as to how to replace air filters for good preventive
maintenance. Figures 2 and 3 show the location of the air filters for
applications with a coil cabinet return air grille. Figure 5 shows the
location of the air filter applications with a coil cabinet top filter.
SECTION 5: HOMEOWNER/USER MAINTENANCE

AIR FILTER AIR FILTER
“A” COIL
THUMB SCREWS
ALIGN THE
SIDES OF THE
DOOR AND
THE CABINET
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 6
Figure 5: Uncased Coil Top Return Air Filter Location
Figure 4: Removing/Replacing the
Coil Cabinet Grille/Door
Replacement of Air Filters in Louvered Return Air Grille
Follow steps below to replace the filters in the louvered return
air grille.
1. Follow the “Turning Off / Shutting Down the Furnace”
procedure in the Section 4: Furnace Startup and Shutdown
Instructions of this manual.
2. Remove the thumb screw at the top center of the louvered
grille by turning it counter-clockwise (See Figure 4).
3. Pull the top of the grille outward and lift up on the grille until
the bottom tabs are out of the slots in the furnace top cover.
4. Turn the grille upside down and pull the bottom frame out to
gain access to the air filters.
5. Remove the two air filters.
NOTE: The filters are disposable. Do not attempt to clean the
filters and reuse them.
6. Slide the two new 20” x 20” x 1” (508mm x 508mm x 25.4mm)
air filters into the grille. Make sure the flow arrows on the filters
are pointing away from the grille louvers.
7. Reinstall the bottom frame.
8. Insert the two tabs on the bottom of the grille into the two
slots in the furnace top cover.
9. Push the top of the grille forward until it is aligned with the
cabinet top flange and side flanges (See Figure 4). Reinstall the
thumb screw to secure the grille to the coil cabinet.
10. Follow the “Turning On / Starting Up the Furnace”procedure in
the Section 4: Furnace Startup and Shutdown Instructions
of this manual.
Replacement of Air Filter in Top of Coil Cabinet
Follow the steps below to replace the filter located in the top of
the coil compartment.
1. Follow the “Turning Off / Shutting Down the Furnace”
procedure in the Section 4: Furnace Startup and Shutdown
Instructions of this manual.
2. Remove the thumb screw at the top center of the solid coil
cabinet door by turning the screw counter-clockwise.
3. Pull the top of the door outward and lift up on the door until
the bottom tabs are out of the slots in the furnace top cover.
4. Set the door on the floor.
5. Remove the air filter from the rack in the top of the coil cabinet
(See Figure 5).
NOTE: The filter is disposable. Do not attempt to clean the filter
and reuse it.
6. Slide the new 20” x 24” x 2” (508mm x 610mm x 50.8mm)
pleated air filter into the filter rack. Make sure the flow arrows
on the air filter are pointing toward the coil.
7. Insert the two tabs on the bottom of the coil cabinet door with
the two slots on the furnace top cover.
8. Push the top of the coil cabinet door forward until it is aligned
with the cabinet top flange and side flanges (See Figure 4).
Reinstall the thumb screw to secure the door to the coil cabinet.
9. Follow the “Turning On / Starting Up the Furnace”procedure
in the Section 4: Furnace Startup and Shutdown Instructions
of this manual.

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 7
THE HOMEOWNERS AND / OR FURNACE USERS MUST STOP HERE!
Continuing will void your warranty.
This section has been designed to assist a qualified service
agency in performing service and maintenance on this furnace.
The homeowners and/or the furnace user must never attempt
to perform any service or maintenance on the furnace especially when
it involves the removal or adjustment of any parts and/or components.
SERVICE AND MAINTENANCE MANUAL
SECTION 1: SAFETY
This is a safety alert symbol. When this symbol is seen on labels or
in manuals, be alert to the potential for personal injury. Understand
and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER: Indicates an imminently hazardous situation, which if
not avoided, will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation, which if not
avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation, which if not
avoided, may result in minor or moderate injury.It is also used
to alert against unsafe practices and hazards involving property
damage.
SAFETY REQUIREMENTS
1. This electric furnace may have a dual electrical supply circuit.
Make sure you check each electrical circuit with a meter to be
sure the power has been disconnected.
2. Insulating materials may be combustible. The furnace must be
kept free and clear of insulating materials.
3. Follow the instructions exactly as shown in Start Up and
Shutdown Section in this manual to properly Start Up or
Shutdown this appliance.
4. Make sure all moving parts have come to a complete stop
before attempting to perform any work once the furnace door
has been removed. Moving parts can cause serious injury if
clothing or body parts get caught in the moving part.
ELECTRICAL SHOCK, FIRE HAZARD
Failure to follow the safety warnings exactly or improper
servicing could result in dangerous operation, serious
injury, property damage, and/or death.
• Before servicing, disconnect all electrical power to the
furnace. Make sure you disconnect both power supplies if
the furnace has a dual power supply circuit. Dual circuits
may be used on the 12 kW, 15kW and 20kW furnaces.
• When servicing controls, label all wires prior to
disconnecting to aid in proper reconnection of wires.
• Verify proper operation after servicing by turning the
thermostat above the room temperature for a brief period
of time to ensure future furnace operation.
The manufacturer or distributer will not be responsible
for any repairs due to improper parts changes, improper
maintenance, improper furnace adjustments or improper
modications made by the homeowner and/or the
appliance user.
The manufacturer will not be responsible if the homeowner
and/or appliance user use this section of the instructions
in an attempt to perform maintenance or repairs to the
furnace. This practice is very dangerous and may result in
a re causing property damage, personal injury, loss of life
and/or will void the appliance warranty.
Improper adjustment, service or maintenance may create a
condition where the operation of the product could cause
personal injury or property damage.
Refer to this manual for assistance or for additional
information consult the Technical Support Group.
ELECTRICAL SHOCK, FIRE HAZARD
Failure to follow the safety warnings exactly could result in
serious injury, death, or property damage.
A fire or electrical hazard may result causing property
damage, personal injury or loss of life.
This product must be serviced and maintained as specified
in these instructions and/or to any applicable local, state,
and national codes including, but not limited to building,
electrical, and mechanical codes.
The following safety rules must be followed when servicing
this furnace.

BLOWER HOUSING
MOUNT SCREWS
THESE SCREWS SECURE THE
BLOWER MOUNTING PLATE INSERT BLOWER
MOUNTING PLATE
INTO TABS (5 TABS)
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 8
FIRE HAZARD
NEVER PLACE A JUMPER BETWEEN “R” & “W”
Placing jumper wire between the RED andWHITE thermostat
wires at the air handler to override the thermostat and
energize the heater elements is an extremely dangerous
practice that can result in damage to the thermostat,
dangerous operation, serious injury, property damage and/
or death.
The interior sections of the furnace must be cleaned and adjusted
by a qualied service contractor once a year or before the start of
each heating season. The following items must be checked:
1. The blower wheel and motor for excessive dust/lint/ debris buildup.
2. The electric heaters for dust/lint/debris buildup, wear, damage,
and corrosion.
3. The electrical components for excessive dust/lint/debris
buildup, wear, and deterioration.
4. The supply air duct system for excessive dust/lint/debris
buildup and deterioration.
5. The return air duct system for excessive dust/lint/debris buildup
and deterioration.
6. All electrical wiring for secure connections, wear, insulation
deterioration, and damage.
7. Indoor coil for dust/lint/debris buildup or damage.
8. Indoor coil drain pan for dust/lint/debris buildup, mold, and
proper drainage.
9. Furnace casing and all interior sheet metal panels or dividers.
Furnace Cleaning Procedure
1. Follow the instructions in Section 4: Furnace Startup and
Shutdown Instructions found in the Users Information Manual
to properly shut down the furnace.
2. Remove the access panel on the front of the furnace.
3. Remove the access panel on the front of the indoor coil
compartment.
4. Remove the screws on the control box covers and remove both
covers (See Figure 6).
5. Remove the two screws on the right side and the screw on the
left side of the blower mounting plate and slide the blower out
of the furnace (See Figure 7).
6. Use a vacuum cleaner and small soft bristle brush to remove
any dust, lint, and debris from the blower compartment.
7. Inspect the area below the blower compartment where the
electric heating elements are located and remove any dust, lint,
and debris from around the heating elements. Be careful not to
damage the heating element.
NOTE: Use the soft bristle brush along with the vacuum to clean
the area so dirt or debris gets drawn into the vacuum hose and
does not fall into the supply duct.
SECTION 2: FURNACE MAINTENANCE
Figure 6: Control Box Cover
Figure 7: Blower Assembly and Mounting
Screw Location
8. Check the blower wheel for dust, lint, and debris buildup. Use the
brush and the vacuum cleaner to remove any dust, lint, and debris
from the blower wheel. Be careful not to move or remove any of the
balance weights located on the blower wheel blades. If the blower
wheel weight is moved or removed, the blower wheel will vibrate. If
the blower wheel is vibrating, it must be replaced.
9. Remove any dust, lint, and debris buildup from the blower motor.
Clean the openings on the motor housing. If these openings are
blocked, the motor may overheat and trip on its internal protector
and could fail prematurely.
10. Remove any dust, lint, and debris buildup in the supply and return
ducts as far as possible with the brush and vacuum cleaner. Excessive
amount of dust, lint, or debris in the ductwork should be cleaned by a
professional duct cleaning service.
11. Remove any dust, lint, and debris from the furnace controls and all
surfaces in the control box to prevent overheating and premature
failure of the controls and premature failure.
12. Remove any dust, lint, and debris buildup from indoor coil, coil co
compartment, and condensate drain pan.
13. After cleaning the drain pan, verify the drain pan is draining properly
by pouring water into the drain pan.
14. Remove any excess water that may have spilled from verifying the
condensate drain pan is draining properly.
15. Reinstall the blower assembly and secure the blower mount plate to
the fan deck using the screws that were removed in step 5.
16. Reinstall the control box covers and secure them to the control box\
with the screws that were removed in step 4.
17. Reinstall the furnace and indoor coil compartment access panels.
18. Follow the instructions in Section 4: Furnace Startup and Shutdown
Instructions found in the Users Information Manual to properly place
the furnace back into service.

TRANSFORMER
ELECTRIC
HEATERS
LOW VOLTAGE
TERMINAL BLOCK
BLOWER MOTOR BLOWER
ASSEMBLY
CIRCUIT BREAKERS
LIMIT SWITCHES
ONE SHOT LIMITS
HEATER
CONTACTORS
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 9
SECTION 3: FURNACE CONTROLS SECTION 4: SEQUENCE OF OPERATION
This section explains how the furnace control operate. Refer to
Figure 8 for component locations.
1. Limit Controls – Each electric heating element has an
automatic reset limit switch directly in front of it to sense the
heating element temperature to prevent overheating. The limit
switch opens if the temperature rises above the set point and
interrupts the 24 VAC signal to the heater contactor coil which
disconnects electrical power to the heating element. In addition
to the automatic reset limit switch, each heating element has a
non-resettable (one-shot) limit switch that will interrupt
208/240 VAC to the heating element should the automatic reset
limit switch fail to function properly in an overtemperature
situation.
2. Heater Contactor(s) –The contactors are controlled by the
thermostat. Upon a call for heat, 24 VAC is sent from the
thermostat “W” terminal to the contactor coil(s) causing the
contactor contacts to close which sends 208/240 VAC to the
electric heating elements. When the call for heat has been
satisfied, the contactor contacts open removing the 208/240
VAC from the heating elements.
3. Circuit Breaker(s) – The circuit breakers are designed as short
circuit protection for the electric heating elements and can also
be used to disconnect the electrical power to the furnace.
NOTE: The circuit breaker(s) are not intended to protect the
wiring from the main control panel (home circuit breaker box)
to the furnace, so the appropriate size breaker(s) or fuse(s) must
be selected (See furnace rating plate) and installed in the main
electrical panel to protect the electrical supply wiring and furnace.
4. Transformer – The transformer is used to reduce the 208/240
VAC line voltage to 24 VAC which is used by the system control
circuit.
5. 3 Amp Low Voltage Fuse – This fuse is used for over-current
protection of the 24 VAC circuit and transformer.
Figure 8: Component Locations
Continuous Blower
When the thermostat fan switch is in the“ON”position (continuous
indoor fan operation), the circuit between the“R” and “G” terminals
in the thermostat is completed causing 24 VAC to be sent through
the GREEN wire to the “G” terminal on the furnace low voltage
terminal block (LVTB). This energizes the furnace blower motor and
air will be circulated through the ductwork into the conditioned
space. The indoor fan motor will operate continuously until the
thermostat fan switch is switched to the“AUTO” position.
Intermittent Blower
When the thermostat fan switch is set in the “AUTO” position
(intermittent indoor fan operation), the indoor blower motor
is only energized when there is a call for cooling or heating
operation. Different motor speed taps are typically use for cooling
and heating operating. The indoor fan motor will operate until the
call for cooling or heating is satisfied.
Heating Cycle
When the thermostat is set in the “HEAT” mode and the fan switch
on the thermostat is set in the “AUTO” position, a call for heat
completes the circuit between the “R” and “W” terminals in the
thermostat and 24 VAC is sent from the “W” thermostat terminal
through the WHITE thermostat wire to the W” terminal on the low
voltage terminal block (LVTB).
24 VAC is sent from the LVTB“W”terminal through the limit controls
to the heater contactor coils which closes the contactor contacts
and energizes the heating elements with line voltage. The blower
motor heating speed lead is connected to the “W” terminal on the
LVTB so the blower is energized on the selected heating speed tap.
The blower will continue to operate until the call for heat has
been satisfied. The electric heater contactor coil is de-energized
which opens the contactor contacts and de-energizes the heating
elements.The 24VAC signal is also removed from the blower motor
heating speed tap which de-energizes the blower motor. The
furnace is now in standby mode awaiting the next heating cycle.
The 12 kW, 15 kW and 20 kW models have a BLACK wire that can
be disconnected from the spade terminal on the back of the LVTB
“W” terminal and connected to the wire from the thermostat “W2”
terminal (2nd stage heat) for two-stage heating operation. A
thermostat that has the second stage (W2) heating feature must
be used. The 2nd stage heat cycle is enabled when the room
temperature falls approximately 3below the thermostat set point.
Once the room temperature is within approximately 1of the
thermostat set point, the 2nd stage of heat is de-energized until
the thermostat calls for the 2nd stage heat again.
For personal safety be sure to turn the electrical power
For personal safety, turn the electrical power “OFF” to the
furnace at the main electrical panel (circuit breaker box)
before performing service or maintenance on the furnace.
Homeowners/users should never attempt to perform any
servicing or maintenance which requires opening the furnace
control box covers.

1
2
3
4
5
C
L
G
N
Terminal Connection
C Speed Tap Common - 24 VAC Common
L Supply Voltage - 240 Vac Line 1
G Ground Connection
N Supply Voltage - 240 Vac Line 2
1 Low Speed Tap - 24 VAC Input
2 Medium-Low Speed Tap - 24 VAC Input
3 Medium Speed Tap - 24 VAC Input
4 Medium-High Speed Tap - 24 VAC Input
5 High Speed Tap - 24 VAC Input
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 10
SECTION 5: TROUBLESHOOTING
The following checks should be made before troubleshooting
the furnace controls for a no-heat issue.
1. Check all of the circuit breakers in the main electrical panel and
on the furnace control box cover to make sure they are in the
“ON”position and have not tripped.
2. Check the 3-amp low voltage fuse on the left side of the control
box. If the fuse is blown, check the wiring with an ohmmeter
for a short to ground. If shorted, repair the short and replace
the fuse.
3. Check any electrical switches that are external to the furnace to
make sure they are turned on.
4. Check all wiring connections make sure they are securely fastened.
If the furnace still will not operate, check the following.
1. Check to see if the voltage is above 200 volts for a 208 VAC
power supply and above 220 volts for a 240 VAC power supply.
If there is no voltage or the voltage is low, check the circuit
breakers in the main electrical panel or the electrical supply
wiring to the furnace.
2. If the blower is operating, but there is no heat, check the heater
contactors to be sure they are closing or check the limit controls
to make sure they are not open.
3. If the motor is not running, check for 208 - 240 VAC on the L1
and L2 contactor terminals. Check for 24 VAC at the motor
speed tap terminals connected between the low voltage
terminal block (LVTB) “G” and “C” terminals for continuous fan
operation, between the LVTB “W” and “C” terminals for heating
operation, or between the LVTB “Y” and “C” terminals for cooling
operation.
4. If 240 VAC is present on the L1 and L2 contactor terminals
and 24 VAC is present on the motor speed tap terminals and the
motor is still not operating, replace the motor.
5. Refer to Figure 9 and Table 1 for the motor terminal connections.
To avoid personal injury or property damage, make certain
that the motor leads cannot contact non-insulated metal
components of the unit.
Table 1: Constant Torque Motor Terminal Connections
Heating Element Not Heating
Check for 208 - 240 VAC between terminals T1 and T2 of the heater
contactor(s). If 208 - 240 VAC is present, check the resistance across
the heating element terminals. If the heating element resistance is
infinity (open circuit) for any heating element, replace the defective
heating element.
The heater design is as follows:
• The 5kW and 6kW models have one 5 kW or 6kW heating element.
• The 8kW and 10 kW models have a heater assembly with two
4kW or 5 kW heating elements.
•The 12kW model has a heater assembly with two 6kW heating
elements.
•The 15 kW model has one heater assembly with two 5 kW
heating elements and one heater assembly with one 5 kW
heating element.
• The 20 kW model has two heater assemblies, each with two 5 kW
heating elements.
Cooling Cycle
When the thermostat is set in the “COOL” mode and the fan switch
on the thermostat is set in the “AUTO” position, a call for heat
completes the circuit between the “R” and “Y” terminals in the
thermostat and 24 VAC is sent from the “Y” thermostat terminal
through the YELLOW thermostat wire to the “Y” terminal on the
low voltage terminal block (LVTB). The blower motor cooling speed
lead is connected to the “Y” terminal on the LVTB so the blower is
energized on the selected cooling speed tap.
The blower will continue to operate until the call for cooling has
been satisfied. The 24 VAC signal is removed from the blower motor
cooling speed tap which de-energizes the blower motor. The
furnace is now in standby mode awaiting the next cooling cycle. Figure 9: Constant Torque Motor Terminals
Blower Motor FLA
1/3 HP Motor – 2.8
1/2 HP Motor – 4.3
3/4 HP Motor – 6.8

BLOWER HOUSING
MOUNT SCREWS
THESE SCREWS SECURE THE
BLOWER MOUNTING PLATE INSERT BLOWER
MOUNTING PLATE
INTO TABS (5 TABS)
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 11
Figure 10: Heater Contactor Terminal Designations
Figure 11: Blower Mounting Plate Screw Locations
Replacing the Blower Motor
1. Follow the instructions as shown in Section 4: Startup and
Shutdown Instructions in the Users Information Manual to
properly shut down this furnace.
2. Remove furnace front access panel and switch the furnace
circuit breaker(s) to the “OFF”position.
3. Disconnect the blower motor 9 pin plastic plug from the top
left corner of the control box (furnace in downow orientation).
4. Remove the two screws on the right side and the screw from
the left side of the blower mounting plate. See Figure 11 for
screw locations.
5. Slide the blower out of the blower compartment and set it on
the oor.
6. Loosen the set screw on the blower wheel hub that secures
the wheel to the blower motor shaft. Make sure the wheel
spins freely with no obstructions. File off any burrs on the
motor shaft before trying to remove the wheel.
7. Remove the 3 screws that secure the motor mounting bracket
legs to the blower housing and remove the motor/bracket
assembly from the blower housing.
8. Disconnect the wires from the motor terminal block after
labeling which terminal each wire was connected to for use
when connecting the wires to the new motor.
9. Remove the blower motor from the motor mounting bracket
by removing the ¼” screw that secure the blower motor to the
bellyband.
10. Insert the new motor and original mounting legs into the
motor mounting bracket and secure to the bellyband and
mounting legs are to the motor with the ¼” screw and nut.
Make sure the belly band and mounting legs are positioned in
the same place as they were on the original motor so the
motor is not at an angle and the wire terminals are located in
the proper position.
11. Insert the 3 screws that secure the motor mounting bracket
legs to the blower housing. Tighten the screws until the
mount bracket arms are securely fastened to the blower housing.
12. Position the blower wheel in the housing until the wheel
is centered between the orifices on each side of the housing.
Center the setscrew on the center of the shaft at and tighten
the setscrew securely to hold the wheel in place.
13. Reconnect the wires to the motor terminal block terminals. If
the wires were not labeled in step 8, refer to the wiring
diagram for the correct connections.
14. Plug the motor speed tap connector to the motor terminal.
15. Slide the blower assembly onto the blower deck and attach
the blower assembly to the blower mounting plate with the
screws that were removed in step 4.
16. Connect the 9-pin plastic plug to the 9-pin plastic plug on
the top left corner of the control box (furnace in downflow
orientation).
17. Turn the furnace circuit breakers to the“ON” position.
18. Install the furnace front access panel.
19. Follow the instructions in Section 4: Furnace Startup and
Shutdown Instructions found in the Users Information
Manual to properly place the furnace back into service.
20. Turn the thermostat fan switch to the “ON”position and check
for proper blower operation. Make sure the blower does not
make any noises or vibrate during operation.
21. When the blower check is complete, set the thermostat to the
desired mode and temperature.
To avoid personal injury, take precautions to not touch non-
insulated electrical components.
Avoid wearing loose clothing or any items that can become
caught in moving parts, such as the blower wheel. This can
cause serious personal injury.
The correct heating element amp draw is approximately as follows:
4 kW Heating Element = 16.7 amps
5 kW Heating Element = 20.8 amps
6 kW Heating Element = 25.0 amps
If the heating element current draw is below the amps shown
above or at 0.0, replace the heating element.
If 208 - 240 VAC is not present between the T1 and T2 terminals
(load) of a heater contactor, but there is 208-240 VAC present
between terminals L1 and L2 (line) of that heater contactor, check
for an open limit control and replace the open limit control if it has
failed open.
If 208-240 VAC is not present between the T1 and T2 terminals
(load) of a heater contactor, but 208-240 VAC is present between
the terminals L1 and L2 (line) of the heater contactor(s) and there is
24 VAC across the coil of that contactor, replace the heater contactor.

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 12
SECTION 6: BLOWER PERFORMANCE
Table 2: Blower Performance (With Air Filters)
Minimum CFM for Electric Heat: 6kW = 390 CFM; 8kW = 520 CFM; 10kW = 650 CFM; 12kW = 780 CFM;
15kW = 975 CFM; 20kW = 1,300 CFM
Blower Motor Speed Tap Information
The constant torque motor has 5 speed taps. The speed taps are designed to be used as shown below:
Tap 5 is used for HIGH-SPEED Cooling operation.
Tap 4 is used for MED-HIGH SPEED Cooling or Heating operation.
Tap 3 is used for MEDIUM SPEED Cooling or Heating operation.
Tap 2 is used for MED-LOW SPEED Heating operation.
Tap 1 is used for LOW-SPEED Constant Circulation operation ONLY. This speed tap is energized by the “G”thermostat terminal and delivers
approximately 200 CFM which is insufficient to support cooling or heating operation and will result in the indoor coil freezing and
tripping of the heating limits.
E30B3 Blower Airflow PerformanceWithout Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B3 2.0 1/3 240 Constant
Torque 10x9
1 805 577 193
2 1001 798 584 479 386
3 1095 955 939 864 714
4 1280 1205 1128 1045 939
5 1415 1295 1247 1170 1098
ЕЗОВ3 Blower Airflow Performance With Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B3 2.0 1/2 240 Constant
Torque 10x9
1 575 323 64
2 742 642 517 452 378
3 962 874 795 777 637
4 1163 1086 1026 953 850
5 1267 1164 1145 1069 984
E30B4 Blower Airflow PerformanceWithout Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B4 3.0 1/2 240 Constant
Torque 10x9
1 921 671 198
2 1094 943 891 807 644
3 1393 1309 1226 1155 1080
4 1561 1481 1371 1277 1158
5 1665 1576 1460 1390 1291
E30B4 Blower Airflow PerformanceWith Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B4 3.0 1/2 240 Constant
Torque 10x9
1 655 409 167
2 959 880 780 662 590
3 1224 1161 1094 1002 911
4 1404 1311 1201 1204 1116
5 1482 1390 1302 1191 1199
E30B5 Blower Airflow PerformanceWithout Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B5 4.0 3/4 240 Constant
Torque 10x9
1 981 775 261 190
2 1336 1241 1130 1035 1014
3 1687 1618 1547 1463 1391
4 1824 1692 1588 1499 1373
5 1935 1791 1680 1610 1491
E30B5 Blower Airflow PerformanceWith Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B5 4.0 3/4 240 Constant
Torque 10x9
1 742 475 238 162
2 1238 1167 1102 998 941
3 1585 1497 1421 1336 1215
4 1679 1596 1476 1368 1250
5 1794 1682 1540 1352 1380
E30B6 Blower Airflow PerformanceWithout Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B6 5.0 3/4 240 Constant
Torque 12x9T
1 1264 1086 882 834 705
2 1322 1168 1035 957 879
3 1393 1214 1226 1139 1036
4 1593 1493 1398 1263 1285
5 2100 2021 1943 1852 1762
E30B6 Blower Airflow PerformanceWith Coil
Blower Code Nominal
Tons Motor HP Volts 1 Ph. 50/60 Hz. Motor Type Blower Wheel
Motor
Tap
CFM @
0.10”
CFM @
0.20”
CFM @
0.30”
CFM @
0.40”
CFM @
0.50”
B6 5.0 3/4 240 Constant
Torque 12x9T
1 1007 923 828 716 689
2 1183 1089 1015 926 824
3 1375 1296 1228 1152 1074
4 1552 1465 1386 1288 1193
5 2047 1957 1862 1753 1605

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 13
SECTION 7: ACCESSORIES
Table 3: Accessories
DOWNFLOW E30 MANUFACTURED / MODULAR HOUSING ELECTRIC FURNACE ACCESSORIES
COOLING COIL CABINETS
PART NUMBER TOP TYPE DOOR MAX CFM MAX SIZE COILS
97-FLSB-21 Solid Louvered 1200 96-( )( )4…Note 1
97-FSOB-21 Open Solid 1600 96-( )( )4…Note 1
97-FLOB-21 Open Louvered 1800 96-( )( )4…Note 1
97-FLSB-27 Solid Louvered 1600 98-( )( )7…Note 1
97-FSOB-27 Open Solid 1600 98-( )( )7…Note 1
97-FLOB-27 Open Louvered 1800 98-( )( )7…Note 1
97-FLSB-39 Solid Louvered 1800 98-( )( )13… Note 1
97-FSOB-39 Open Solid 1800 98-( )( )13… Note 1
97-FG-18 N/A Frame & Grille 1200 96-( )( )4…Note 1 & 2
97-FG-24 N/A Frame & Grille 1600 98-( )( )7…Note 1 & 3
90-DCU0-01 1" to 4" Duct Connector, Floor to Duct
90-DCU0-02 6" to 8" Duct Connector, Floor to Duct
90-DCU0-03 9" to 12" Duct Connector, Floor to Duct
90-DCU0-04 E30 Transition Sub Base to Old Style Electric Furnaces
95-1741-UES Universal Electro-Static Coil Filter
R87MH0012 Solid Door for the 97-F***-21 Cabinet
R87MH0026 Louvered Door for the 97-F***-21 Cabinet
R87MH0014 Solid Door for the 97-F***-27 Cabinet
R87MH0027 Louvered Door for the 97-F***-27 Cabinet
R87MH0016 Solid Door for the 97-F***-39 Cabinet
R87MH0028 Louvered Door for the 97-F***-39 Cabinet
UPFLOW E30 MANUFACTURED / MODULAR HOUSING ELECTRIC FURNACE ACCESSORIES
97-FSCB-28 Up Flow 28" Tall Coil Cabinet
97-FSCB-36 Up Flow 36" Tall Coil Cabinet
97-FFSB-20 Up Flow Filter Cabinet and Stand 20"
97-FFSB-24 Up Flow Filter Cabinet and Stand 24"
E30 MANUFACTURED / MODULAR HOUSING ELECTRIC FURNACE ACCESSORIES
R87MH0010 White Furnace Door
R68BAE003 Feeder from Single Circuit to Dual Breaker Furnace
Note 1: Maximum height of coil, see coil spec sheet. All 9( 6,7,8 )-Series coils will fit in the 39 cabinet. Alcove modification will be required
with most coil cabinets
Note 2: 97-FG-18 used in conjunction with the E30 Electric Furnace. Will fit in the existing alcove opening when replacing a Coleman
electric furnace with 96-Series Coils.
Note 3: 97-FG-24 used in conjunction with the E30 Electric Furnace. Will fit in the existing alcove opening when replacing a Nordyne
electric furnace. (98-8W7 Max Height)

15 7 8 9
5
6
14
12
13
11
10
16
4
3
1
2
8 KW, 10 KW, 12 KW, HEATERS6 KW HEATER
Item Description E30B3D006AAE E30B3D008AAE E30B3D010AAE E30B3D012ABE E30B3D015ABE E30B3D020ABE
1 1/3 HP CT BLOWER MOTOR R65BV0025R R65BV0025R R65BV0025R R65BV0025R R65BV0025R R65BV0025R
2 BLOWER HOUSING & WHEEL R69AD0018 R69AD0018 R69AD0018 R69AD0018 R69AD0018 R69AD0018
3 MOTOR MOUNT BAND R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065
4 MOTOR MT ARM & GROMMET R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066
5 HEATER CONTACTOR 1 R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P
6 HEATER CONTACTOR 2 R68AB0019P R68AB0019P R68AB0019P
7 TRANSFORMER R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003
8 CIRCUIT BREAKER 1 R68BAD015 R68BAD017 R68BAD018 R68BAD015 R68BAD018 R68BAD018
9 CIRCUIT BREAKER 2 R68BAD014 R68BAD014 R68BAD018
10 LOW VOLTAGE TERMINAL BLOCK R68DC0013 R68DC0013 R68DC0013 R68DC0063 R68DC0063 R68DC0063
11 AUTORESET LIMIT SWITCH 155° F R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008
12 ELECTRIC HEATER ELEMENT 1 R67AB0022 R67AB0016 R67AB0017 R67AB0018 R67AB0017 R67AB0017
13 ELECTRIC HEATER ELEMENT 2 R67AB0015 R67AB0017
14 GROUND LUG R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022
15 3 AMP FUSE AND FUSE HOLDER R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001
16 NONRESETTABLE LIMIT SWITCH R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 14
SECTION 8: REPLACEMENT PARTS
Figure 12: Replacement Parts Item Identification for E30B3 Models
Table 4: Replacement Parts for Electric E30B3 Models

15 7 8 9
5
6
14
12
13
11
10
16
4
3
1
2
8 KW, 10 KW, 12 KW, HEATERS6 KW HEATER
Item Description E30B4D006AAE E30B4D008AAE E30B4D010AAE E30B4D012ABE E30B4D015ABE E30B4D020ABE
1 1/2 HP C.T. BLOWER MOTOR R65BV0026R R65BV0026R R65BV0026R R65BV0026R R65BV0026R R65BV0026R
2 BLOWER HOUSING AND WHEEL R69AD0018 R69AD0018 R69AD0018 R69AD0018 R69AD0018 R69AD0018
3 MOTOR MOUNT BAND R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065
4 MOTOR MOUNT ARM & GROMMET R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066
5 HEATER CONTACTOR STAGE 1 R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P
6 HEATER CONTACTOR STAGE 2 R68AB0019P R68AB0019P R68AB0019P
7 TRANSFORMER R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003
8 CIRCUIT BREAKER STAGE 1 R68BAD014 R68BAD016 R68BAD018 R68BAD014 R68BAD018 R68BAD018
9 CIRCUIT BREAKER STAGE 2 R68BAD014 R68BAD014 R68BAD018
10 LOW VOLTAGE TERMINAL BLOCK R68DC0013 R68DC0013 R68DC0013 R68DC0063 R68DC0063 R68DC0063
11 AUTORESET LIMIT SWITCH 155°F R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008
12 ELECTRIC HEATER ELEMENT STAGE 1 R67AB0022 R67AB0016 R67AB0017 R69AB0018 R67AB0017 R67AB0017
13 ELECTRIC HEATER ELEMENT STAGE 2 R67AB0O15 R67AB0017
14 GROUND LUG R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022
15 3 AMP FUSE AND FUSE HOLDER R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001
16 NONRESETTABLE LIMIT SWITCH R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 15
Figure 13: Replacement Parts Item Identification for E30B4 Models
Table 5: Replacement Parts for E30B4 Models

15 7 8 9
5
6
14
12
13
11
10
16
4
3
1
2
8 KW, 10 KW, 12 KW, HEATERS6 KW HEATER
Item Description E30B5D006AAE E30B5D008AAE E30B5D010AAE E30B5D012ABE E30B5D015ABE E30B5D020ABE
1 3/4 HP C.T. BLOWER MOTOR R65BV0027R R65BV0027R R65BV0027R R65BV0027R R65BV0027R R65BV0027R
2 BLOWER HOUSING AND WHEEL R69AD0018 R69AD0018 R69AD0018 R69AD0018 R69AD0018 R69AD0018
3 MOTOR MOUNT BAND R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065
4 MOTOR MOUNT ARM & GROMMET R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066
5 HEATER CONTACTOR STAGE 1 R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P
6 HEATER CONTACTOR STAGE 2 R68AB0019P R68AB0019P R68AB0019P
7 TRANSFORMER R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003
8 CIRCUIT BREAKER STAGE 1 R68BA015 R68BAD017 R68BAD018 R68BAD015 R68BAD018 R68BAD018
9 CIRCUIT BREAKER STAGE 2 R68BAD014 R68BAD014 R68BAD018
10 LOW VOLTAGE TERMINAL BLOCK R68DC0013 R68DC0013 R68DC0013 R68DC0063 R68DC0063 R68DC0063
11 AUTORESET LIMIT SWITCH 155°F R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008
12 ELECTRIC HEATER ELEMENT STAGE 1 R67AB0022 R67AB0016 R67AB0017 R69AB0018 R67AB0017 R67AB0017
13 ELECTRIC HEATER ELEMENT STAGE 2 R67AB0015 R67AB0017
14 GROUND LUG R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022
15 3 AMP FUSE AND FUSE HOLDER R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001
16 NONRESETTABLE LIMIT SWITCH R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011
MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 16
Figure 14: Replacement Parts Item Identification for E30B5 Models
Table 6: Replacement Parts for E30B5 Models

MORTEX PRODUCTS, INC. 501 TERMINAL RD, FORT WORTH, TX 76106 Page 17
Subject to change without notice
Copyright by Mortex Products, Inc. 2024 61MH0038 Rev K 2-7-24
15 7 8 9
5
6
14
12
13
11
10
16
4
3
1
2
8 KW, 10 KW, 12 KW, HEATERS6 KW HEATER
Item Description E30B6D006AAE E30B6D008AAE E30B6D010AAE E30B6D012ABE E30B6D015ABE E30B6D020ABE
1 3/4 HP C.T. BLOWER MOTOR R65BV0027R R65BV0027R R65BV0027R R65BV0027R R65BV0027R R65BV0027R
2 BLOWER HOUSING AND WHEEL R69AD0013 R69AD0013 R69AD0013 R69AD0013 R69AD0013 R69AD0013
3 MOTOR MOUNT BAND R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065 R66AB0065
4 MOTOR MOUNT ARM & GROMMET R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066 R66AB0066
5 HEATER CONTACTOR STAGE 1 R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P R68AB0019P
6 HEATER CONTACTOR STAGE 2 R68AB0019P R68AB0019P R68AB0019P
7 TRANSFORMER R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003 R68AA0003
8 CIRCUIT BREAKER STAGE 1 R68BAD015 R68BAD017 R68BAD018 R68BAD015 R68BAD018 R68BAD018
9 CIRCUIT BREAKER STAGE 2 R68BAD014 R68BAD014 R68BAD018
10 LOW VOLTAGE TERMINAL BLOCK R68DC0013 R68DC0013 R68DC0013 R68DC0063 R68DC0063 R68DC0063
11 AUTORESET LIMIT SWITCH 155°F R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008 R68CA0008
12 ELECTRIC HEATER ELEMENT STAGE 1 R67AB0022 R67AB0016 R67AB0017 R69AB0018 R67AB0017 R67AB0017
13 ELECTRIC HEATER ELEMENT STAGE 2 R67AB0015 R67AB0017
14 GROUND LUG R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022 R66GF0022
15 3 AMP FUSE AND FUSE HOLDER R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001 R86MHA001
16 NONRESETTABLE LIMIT SWITCH R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011 R68CA0011
Figure 15: Replacement Parts Item Identification for E30B6 Models
Table 7: Replacement Parts for E30B6 Models