MHS Boilers EF300 User manual

CUS
®
READ AND SAVE THESE INSTRUCTIONS
ELECTRIC FIREPLACE HEATER
INSTALLATION INSTRUCTIONS AND
HOMEOWNER’S MANUAL
IMPORTANT
Read these instructions carefully before installing or trying to operate this electric fireplace.
WARNING
All electric fireplaces have hot and arcing or sparking parts inside. Do not store or use
gasoline or other flammable vapors and liquids in the vicinity of this or any other electric
fireplace.
WARNING
This electric fireplace is tested and listed for use only with optional accessories listed in
these instructions. Do not use optional accessories not specifically tested for this electric
fireplace. Use of optional accessories may void warranty and result in a safety hazard.
MODEL EF300
32" ELECTRIC FIREPLACE

2 86D0018
CONTENTS
INSTALLER
Please leave these instructions with the owner.
OWNER
Please retain these instructions for future reference .
IMPORTANT
Read these instructions carefully before installing or trying to operate this electric fireplace.
Important Safety Information .......................... 2
Listing Approvals ............................................ 3
Product Specifications..................................... 4
Pre-Installation Information............................. 5
Locating Electric fireplace............................. 5
Unpacking and Testing Electric fireplace ...... 6
Framing Electric fireplace.............................. 6
Framing Dimensions .................................... 7
Electrical Connections .................................. 8
Electric fireplace Installation .......................... 9
Operating Instructions ...................................11
Control Panel Operation ..............................11
Remote Control —Hand Held Transmitter
Operation .................................................... 12
Cleaning and Maintenance ........................... 13
Cleaning Electric fireplace Compartment ... 13
Cleaning Back Glass .................................. 14
Bulb Replacement ...................................... 14
Blower and Electric fireplace Replacement 15
Troubleshooting ............................................ 16
Replacement Parts......................................... 17
Warranty...........................................Back Cover
IMPORTANT SAFETY INFORMATION
WARNING
Improper installation or
use of the electric fireplace
can cause serious injury or
property damage. Use this
manual for reference. For
assistance or additional
information, consult a
qualified installer.
CAUTION
Do not expose electric
fireplace to elements such
as rain, etc.
WARNINGS
• Due to high temperatures, the electric fireplace should
be located out of traffic and away from furniture and
draperies.
• Never place any object on the electric fireplace.
• Never place clothing or other flammable material on
or near the electric fireplace.
• Electric fireplace becomes very hot when running.
Keep children and adults away from the hot surface of
electric fireplace to avoid burns or clothing ignition.
• Electric fireplace will remain hot for a time after
shutdown. Do not touch electric fireplace before it
cools.
• Carefully supervise young children when they are in
the room with the electric fireplace.
Take the following basic precautions when using electri-
cal fireplaces to reduces the risk of fire, electric shock
and personal injury.
DANGER
Never locate electric fireplace where it could
fall into a bathtub or other water container.

86D0018 3
IMPORTANT SAFETY INFORMATION
IMPORTANT SAFETY INFORMATION (continued)
6. Do not use electric fireplace in bathrooms, laundry areas,
or similar indoor locations.
7. Do not run power cord under carpeting or cover power
cord with throw rugs. Make sure power cord is away from
traffic area where it will not be tripped over.
8. Turn electric fireplace controls to “OFF” before removing
the plug from the outlet.
9. Use this electric fireplace only as described in this manual.
Using electric fireplace in any way not recommended
by the manufacturer may cause fire, electric shock or
personal injury.
10. Do not use an extension cord with electric fireplace. An
extension cord may overheat and cause a fire. If you must
use an extension cord, use a No. 14 AWG minimum size
cord that is rated not less than 1875 WATTS.
11. Always use properly grounded fused and polarized out-
lets.
12. Always use ground fault protection where required by
electrical codes.
13. Always unplug electric fireplace before performing any
cleaning or maintenance.
14. Always unplug electric fireplace before moving it.
15. Always use a certified electrician to install new circuits
or outlets.
16. Always keep electric fireplace free from excessive vibra-
tion when transporting electric fireplace.
17. Keep electric fireplace dry when transporting electric
fireplace.
18. Always store electric fireplace in dry place.
This electric fireplace has been tested in accordance with UL 2021 and CSA C22.2 No. 46 standards for a fixed location
dedicated electric room heaters.
Installation must conform to local codes. In absence of local codes, electrical wiring must comply with the latest edition of
the National Electrical Code ANSI/NFPA 70 in the USA. In Canada, comply with latest edition of the current CSA C22-1
Canadian Electrical Code.
LISTING APPROVALS
1. Keep combustible materials such as furniture, pillows,
bedding, papers, clothing, and curtains at least 3' from
front of electric fireplace. Also keep combustible materials
away from the sides and back of electric fireplace.
2. Always unplug electric fireplace when not in use.
3. Do not operate electric fireplace with a damaged cord or
plug.
4. Do not operate electric fireplace if electric fireplace mal-
functions or has been dropped or damaged in any way.
5. Do not use electric fireplace outdoors.
WARNING
Do not insert or allow foreign objects
to enter any ventilation or exhaust
opening of electric fireplace. This may
cause electric shock, fire, or damage to
electric fireplace.
WARNING
RISK OF FIRE!
Do not block air intakes of electric
fireplace. Blocking air intakes can
cause a fire.
WARNING
Do not burn wood or other materials in
this electric fireplace. This could cause
a fire.

4 86D0018
FRONT
LEFT
TOP
RIGHT
201/2"
16"
231/2"
30"
53/8"
291/2"
32" ELECTRICAL
ACCESS
PRODUCT SPECIFICATIONS
ELECTRIC FIREPLACE DIMENSIONS
Figure 1 - Electric Fireplace Dimensions

86D0018 5
PRE-INSTALLATION INFORMATION
LOCATING ELECTRIC FIREPLACE
Figure 2 illustrates a variety of ways the electric fireplace may be located in a room. The electric fireplace may be installed
directly on the floor, carpet or raised on a hearth.
Figure 2 - Electric Fireplace Locations
WARNING
Due to high temperatures, this electric
fireplace should be located out of traffic.
Keep combustible materials such as
furniture, pillows, bedding, papers,
clothes and curtains at least three (3)
feet (.9m) from the front of the electric
fireplace.
WARNING
To prevent contact with sagging or
loose insulation, the electric fireplace
must not be installed against vapor
barrier or exposed insulation. Localized
overheating could occur and a fire could
result.
CAUTION
Wear gloves and safety glasses for
protection during installation and
maintenance.
CAUTION
Do not expose the electric fireplace to the
elements (such as rain, etc.)
CAUTION
Never locate this electric fireplace where
it may fall into a bathtub or other water
container.
NOTICE
Minimum and maximum clearances must be maintained at all times. Illustrations throughout
these instructions show typical installations and are for design purposes only. Actual
installations may vary slightly due to individual preferences

6 86D0018
FRAMING ELECTRIC FIREPLACE
Electric fireplace framing can be built before or after the electric fireplace is set in place. Construct electric fireplace fram-
ing following Figure 3 and the chart below for your specific installation requirements. See Figure 1 on Page 4 for electric
fireplace dimensions. The framing headers may rest on the top of the electric fireplace standoffs.
The electric fireplace may be installed directly on a combustible floor or raised on a platform of an appropriate height. When
the electric fireplace is installed directly on carpeting, tile, or other combustible material, other than wood flooring, the electric
fireplace shall be installed on a metal or wood panel extending the full width and depth of the enclosure.
When framing with combustible materials, all required clearances to combustibles must be adhered to. Header height is
measured from the base of the electric fireplace.
Tools and building supplies required for installation:
• Saw • Square
• Framing materials • Pliers
• Caulking Material • Surround
• Tape measure • Gloves
• Phillips Screwdriver • Hammer
• Electric Drill/Bits • Level
• Wall-finishing Materials
UNPACKING AND TESTING ELECTRIC FIREPLACE
Carefully remove the electric fireplace from the box. Prior to permanently installing the electric fireplace, test to make sure
the electric fireplace operates properly.
CAUTION
Do not operate the electric fireplace if it is damaged
or has malfunctioned. If you suspect the electric
fireplace is damaged, return the electric fireplace
to an authorized service facility for examination,
electrical or mechanical adjustment or repair.

86D0018 7
BJ
A
I
H
G
D
F
E
A
C
1/2"or5/8"
C
A
G
C
G
A1/2" or 5/8
"
Nailing tabs will
accommodate
½" or 5/8"
finished material
Nailing tabs will
accommodate
½" or 5/8"
finished material
Corner Installation
Stud Location
EF300
AFront Wall Opening 33"
BFraming Height 301/2"
CBack Width of Heater 231/2"
DWidth to Corner 14"
ECorner Clearance Width 59"
FDepth from Heater to Wall 291/2"
GHeater Framing Depth 163/4"
HCorner Wall Length 413/4"
IHeater Opening Width 291/2"
JHeater Opening Height 201/2"
Inside Chase Installation
Recessed Installation
FRAMING DIMENSIONS
Figure 3 - Framing Dimensions
WARNING
Do not fill spaces around electric
fireplace with insulation or other
materials. This could cause a fire.

8 86D0018
PRE-INSTALLATION INFORMATION
Figure 4 - Wiring Diagram
ELECTRICAL CONNECTIONS
Wire a dedicated, properly fused circuit with a 20 Amp rating for the appropriate voltage. Preferably, the electric fireplace
will be on a dedicated circuit, as other electric fireplaces on the same circuit may cause the circuit breaker to trip, or the fuse
to blow, when the electric fireplace is in operation. See Figure 5.
ELECTRICAL SPECIFICATIONS
Power RequirementsRated Wattage Amperage
120 Volt, 60 Hz. 1500 Watts 13.33 Amps

86D0018 9
INSTALLATION INSTRUCTIONS
1. Complete the framing opening to the dimensions specified in Figure 3, page 7.
2. Plug the three-prong plug into a wall outlet.
3. Perform a function test. See Control Panel Operation on page 11 and Remote Control Operation on page 12.
ELECTRIC FIREPLACE INSTALLATION
PACKAGING LIST
This assembled electric fireplace is packaged with:
One accessory package located in the electric
fireplace, containing:
QTY
1Installation and Operation Manual
2Light Bulbs (extra)
1One Remote Control
If any part or parts are missing or damaged, contact dealer where you bought electric fireplace.
WARNING
Electrical wiring must
comply with local building
codes and other applicable
regulations to reduce risk
of fire, electrical shock and
injury to individuals.
WARNING
Any electrical rewiring of
this electric fireplace must
be done by a qualified
electrician.
WARNING
Do not use this electric
fireplace if any part of it
has been underwater.
Immediately call a qualified
service technician to inspect
electric fireplace. Replace
any part of the electrical
system which has been
under water.
WARNING
RISK OF FIRE! To prevent a possible
fire, do not block air intake or exhaust
in any manner. Do not use on soft
surfaces (like a bed) where openings
may become blocked.
WARNING
RISK OF FIRE! The power cord must
not be pinched or against a sharp edge.
Securecordtoavoidtrippingorsnagging
to reduce the risk of fire, electric shock
or personal injury. Do not run cord under
carpeting. Do not cover cord with throw
rugs, runners or the like. Arrange cord
away from traffic areas where it will not
be tripped over.
WARNING
RISK OF FIRE! Do not blow
or place insulation against
the electric fireplace.
WARNING
Thiselectricfireplace istested and listedfor useonly withthe approved optionalaccessories.
Use of optional accessories not specifically tested for this electric fireplace could void the
electric fireplace warranty and/or result in a safety hazard.

10 86D0018
ELECTRIC FIREPLACE INSTALLATION
FINISHING
Combustible Finishing Material: Materials are made of wood or surfaced with wood, compressed paper, plant fibers,
plastics or any material capable of igniting and burning, whether flame-proofed or not, plastered or unplastered (this includes
drywall).
Noncombustible Finishing Material: Materials will not ignite and burn. Such materials are those consisting entirely of
steel, iron, brick, tile, concrete, slate, glass or plasters or combinations thereof or have a fire rating of zero.
WARNING
Grilles on this electric fireplace
cannot, in any way, be covered.
This may create a fire hazard.
FINISHING CHECKLIST
• Power supply service must be completed prior to finishing to avoid reconstruction.
• Grilles and air openings cannot be covered in any circumstances.
NOTE: The electric fireplace is a zero clearance electric fireplace and may be finished with combustible
or noncombustible finishing materials.
Paint or lacquer used to finish the mantel must be heat resistant to prevent discoloration.

86D0018 11
OPERATING INSTRUCTIONS
LOCATION OF CONTROLS
This electric electric fireplace can be operated either from the control panel or by using the hand held transmitter. The control
panel is located on the upper right side compartment. The hand held transmitter comes with the electric electric fireplace.
Figure 5 - Control Panel
IR receiver
CONTROL PANEL OPERATION
ON /OFF SWITCH (See Figure 5)
On/Off switch will turn electric fireplace on or off.
1. When the switch is turned to “ON” position (Power LED will turn to green color).
a. Flame defaults to high setting
b. Ember bed defaults to high setting.
c. Electric fireplace defaults to ON position (Temp LED will be on).
2. When the switch is turned to “OFF” position (Power LED will be off).
a. Flame will be off
b. Ember bed will be off
c. Electric fireplace will be off (Temp LED will be off)
NOTE: After 25 seconds Power LED and Heat LED will turn off.
NOTE: Electric fireplace may release a slight, harmless odor the first time it is used. This odor is
normal. It is caused by the initial heating of the internal heating elements and will not occur again.
F/E – FLAME ADJUSTMENT BUTTON (See Figure 5)
1. There are a total of 4 settings (Off, Low, Medium, and High) to adjust the flame and light ember bed.
NOTE: Flame and ember bed setting cannot be adjusted independently from this switch.
2. Press button to cycle through lighting. Note that the Power LED light is always green.
HEAT – SET TEMPERATURE FOR ELECTRIC FIREPLACE BUTTON (See Figure 5)
1. The electric fireplace has a built-in thermostat so it will shut off automatically once the set temperature is reached. It will
also turn on automatically if the room temperature drops below the set temperature.
2. The electric fireplace is pre-set to the following temperatures:
• HI will shut off when room reaches approximately 90° F (32° C). The LED is red.
• MED will shut off when room reaches approximately 80° F (27° C). The LED is orange.
• LO will shut off when room reaches approximately 70° F (21° C). The LED is green.
3. Press HEAT Button to cycle through settings. When this button is pressed the set Temp LED light setting will change to
its corresponding color. See step 2.
On/Off switch
HeatF/E (Flame & Ember) Switch
Power LED
Heat LED
Power
ON/OFF

12 86D0018
ON/OFF
HEAT
FLAME
EMBER
ELECTRIC FIREPLACE INSTALLATION
Figure 6 - Remote Control
On/Off
Button
Set
Temperature
Buttons
Flame
Adjustment
Buttons
Ember Bed
Adjustment
Buttons
REMOTE CONTROL – HAND HELD TRANSMITTER OPERATION
The hand held transmitter is provided with the electric fireplace. All functions of the electric fireplace can be controlled from
this hand held transmitter.
NOTE: The effective range of the remote control is up to approximately 26 feet (8 meters).
Point hand held transmitter at the IR receiver on the control panel to operate. Make sure your batteries are fully charged
and installed correctly in your hand held transmitter. When there is a transmission or signal being sent, the front of the hand
held transmitter will flash.
To control the electric fireplace, the On/Off switch of the control panel must be ON. See Control Panel Operation, page
11.
ON /OFF BUTTON
Used to turn on or off the electric fireplace using the hand held
transmitter.
FLAME – FLAME ADJUSTMENT BUTTON
1. There are a total of 6 settings (Off to Highest) to adjust the flame
lighting. See Figure 6.
2. Used to increase or decrease flame, press the or buttons to
cycle through the lighting. See Figure 6.
LIGHT – EMBER BED ADJUSTMENT BUTTON
1. Used to adjust the ember bed lighting. There are a total of 6 settings
(Off to Highest) to adjust the ember bed lighting. See Figure 6.
2. Used to increase or decrease flame, press the or buttons to
cycle through the lighting. See Figure 6.
HEAT – SET TEMPERATURE FOR ELECTRIC FIREPLACE BUTTON
1. The electric fireplace has a built-in thermostat. This shuts the electric fireplace off automatically once the set temperature
is reached, The electric fireplace will also turn on automatically if the room temperature drops below the set tempera-
ture.
2. The electric electric fireplace is pre-set to the following temperatures:
• HIGH will shut off when room reaches approximately 90° F (32° C). The LED will be red.
• MEDIUM will shut off when room reaches approximately 80° F (27° C). The LED will be orange.
• LOW will shut off when room reaches approximately 70° F (21° C). The LED will be green.
3. Press TEMP Button to cycle through settings. When this button is pushed, the set Temp LED light setting will change
to its corresponding color on the control panel.

86D0018 13
WARNING
Always disconnect power and allow the electric fireplace to cool before performing any
cleaning, maintenance or relocation of this electric fireplace. Turn controls to OFF and
remove plug from outlet or turn off circuit breaker to electric fireplace.
Turn off electric fireplace and circuit breaker to electric fireplace before performing any cleaning and/or maintenance. Allow
electric fireplace to cool completely.
CLEANING ELECTRIC FIREPLACE COMPARTMENT
1. Using vacuum with brush attachment, gently clean compartment.
2. After cleaning compartment, replace front face and reset circuit breaker.
CLEANING BACK GLASS
1. The flame board is cleaned in the factory during assembly. During shipment, installation, handling, etc. the flame board
surface may collect dust particles. Remove dust particles by buffing lightly with a clean dry cloth.
2. Do not use any type of cleaner or water to clean off surface. Gently rub flame board surface with a soft. dry cloth to
remove dirt
BULB REPLACEMENT
There are a total of 5 light bulbs (type E12 rated 60W, 120V) in your electric fireplace.
• 2 bulbs provide illumination for the ember bed beneath the log set
• 3 bulbs provide illumination nation for the flame board assembly
WARNING
Do not install replacement
bulbsthat exceed specified
maximum watts.
WARNING
Always wear gloves and eye
protection when handling and
replacing glass bulbs in case
bulb is accidentally broken.
If the electric fireplace has been running, turn off power and let electric fireplace cool before changing bulb.
CLEANING AND MAINTENANCE
The light bulbs in your electric fireplace can
become extremely hot. Allow at least 10 minutes
between turning off the electric fireplace and
removing the light bulbs to avoid accidental
burns.
WARNING

14 86D0018
Figure 7 - Ember Bulb Location
Bulbs
EMBER BED BULBS
1. Follow Step 1 under Cleaning Electric Fireplace Compartment, page 13 to remove grate assembly with logs.
2. Gently pull forward and lift up grate assembly with logs until front edge clears the electric electric fireplace.
NOTE: Do not pull up on logs.
3. Hold and rotate out old bulb. See
Figure 7.
4. Hold socket and push in new bulb
(DO NOT exceed wattage).
5. Repeat steps 3 and 4 with second
bulb.
6. Reinstall grate assembly and
logs.
7. Reinstall front bottom face.
CLEANING AND MAINTENANCE
1. Remove screws from flame board. The brackets are
located on the inside of the electric fireplace. The screws
to be removed are on the inside. See Figure 8.
2. Wearing gloves, lift up on bottom of flame board and
pull forward. Place flame board on smooth, soft surface
to avoid breakage.
3. Repeat steps 3 and 4 above (ember bulb replace-
ment).
4. With gloves, carefully reinstall flame board.
5. Install flame board holder brackets with screws removed
in step 2.
Figure 8 - Plastic Screen and Bracket Location
FLAME GENERATION BULBS
Remove
Screws
Bracket
Flame
Board Flame Board

86D0018 15
Figure 9 - Replacing Blower
BLOWER AND ELECTRIC FIREPLACE REPLACEMENT
1. Remove the six (6) screws securing inner top panel from the inside of the electric fireplace.
2. Remove the four (4) screws securing heater/blower assembly.
3. Remove the two (2) screws securing panel top from the front of the fireplace.
4. Pull handle located on the blower/heater assembly to slide blower assembly forward.
5. Disconnect wiring. Mark or label wiring so you will hook it up correctly when reinstalling.
6. Replace blower/heater assembly. Install all components that you removed earlier.
Top Panel
Blower
Assembly
Wire
Connection

16 86D0018
TROUBLESHOOTING
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Electric fireplace turns off
and will not turn on.
Electric fireplace has overheated. The electric fireplace is protected with a safety
device to prevent it from overheating. If the electric
fireplace should overheat, a thermal switch will
disconnect power to the electric fireplace and will
not come back on without being reset. Reset electric
fireplace by turning the main power switch off and
waiting 5 minutes then turning it back on.
Flame is fixed (unmoving). Wiring may be loose or the flame motor
may be defective.
Inspect all wiring for loose connections. Repair or
replace if necessary. If the wire connections are
good, replace the flame motor.
Dim or poorly visible flame.
Log set and ember not glow-
ing.
Light bulb(s) burnt out or wiring is loose. Inspect all wiring for loose connections and repair or
replace if necessary. Inspect light bulbs and replace
if necessary.
Flame sputters. Flame motor is defective. Replace flame motor.
Remote control does not
work.
Low batteries. Replace AA batteries in remote control. If problem
persists, there may have been a loss of power to the
electric fireplace as a possible result from a power
failure (i.e. breaker tripped or the main power switch
has been turned off).
Electric fireplace turns on or
off by itself.
Remote control has a similar frequency to
other remotes in the house.
Exchange the other remote controls in home for one
with a different frequency.
Circuit breaker trips or
fuse blows when the electric
fireplace is turned on.
Improper circuit current rating. Have a qualified electrician check the house circuit
to ensure it is on a dedicated circuit with a 20-amp
rating. If the circuit breaker continues to trip (or
blow fuses), inspect wiring for a loose connection
or a dead short. Repair or replace wiring and/or
connectors as necessary.

86D0018 17
REPLACEMENT PARTS
Item Description Qty Part No.
Standard Features
1Blower Heater Assembly 186D0101
2Motor (Rear Flame) 186D0102
3Plastic screen (Including Gasket) 186D0103
4Hand Held Transmitter 186D0104
5PCB Main Control 186D0105
6PCB Control Panel 186D0106
7Light Bulb ** 586D0107
8On/Off Switch 186D0108
9Pull Screen 286D0109
10 Ember Bed 186D0110
11 Logs Assembly 186D0111
** Equivalent bulbs can be purchased at Electrical Supply Stores, Home Improvement Stores, etc. Use only light bulbs that
are rated as follows: TYPE E12, 120 VOLT, 35 WATT MAXIMUM
Description Qty Part No.
Glass Door
Black Finish Single Pane Glass Door 1 GDSB32BA
Brass Finish Single Pane Glass Door 1 GDSB32PBA
Stainless Finish Single Pane Glass Door 1 GDSB32SSA
Description Qty Part No.
Wood Products
Wall Surround
Oak Surround with Honey Oak Finish 1 WSHE30F-O
Birch Surround with Dark Cherry Finish 1 WSHE30F-DC

October 2006 P/N 86D0018 • Rev. 4
MHS
Warranty Policy
BASIC WARRANTY
MHS warrants the components and materials in your electric fireplace to be free from manufacturing and material
defects for a period of one year from date of installation. After installation, if any of the components manufactured
by MHS in the electric fireplace are found to be defective in materials or workmanship, MHS will, at its option,
replace or repair the defective components at no charge to the original owner. MHS will also pay for reasonable labor
costs incurred in replacing or repairing such components for a period of one year from the date of installation.
Any products presented for warranty repair must be accompanied by a dated proof of purchase.
This Warranty will be void if the electric fireplace is not installed by a qualified installer in accordance with the
installation instructions. The Warranty will also be void if the electric fireplace is not operated and maintained
according to the operating instructions supplied with the electric fireplace, and does not extend to (1) damage by
accident, neglect, misuse, abuse, alteration, negligence of others, including the installation thereof by unqualified
installers, (2) the costs of removal, reinstallation or transportation of defective parts on the electric fireplace, or
(3) incidental or consequential damage. All service work must be performed by an authorized service representa-
tive.
This warranty is expressly in lieu of other warranties, express or implied, including the warranty of merchantability
of fitness for purpose and of all other obligations or liabilities. MHS, Inc. does not assume for it any other obliga-
tions or liability in connection with the sale or use of the electric fireplace. In states that do not allow limitations on
how long an implied warranty lasts, or do not allow exclusion of indirect damage, those limitations of exclusions
may not apply to you. You may also have additional rights not covered in this Warranty.
MHS reserves the right to investigate any and all claims against the Warranty and decide upon method of settle-
ment.
For information about this warranty, contact:
Technical Services
MHS
149 Cleveland Drive
Paris, Kentucky 40361