Installer: Leave this manual with the appliance. Consumer: Retain this manual for future reference.
OPERATING INSTRUCTIONS
and Owner’s Manual
read InsTruCTIOns CareFullY: Read and follow all instructions. Place instructions in a safe
place for future reference. Do not allow anyone who has not read these instructions to assemble,
light, adjust or operate the heater.
For model serial numbers, see page 20.
Plaque Heaters
MHVFR20TB LP
MHVFR30TB LP
Blue Flame Heaters
MHVFB20TB LP
MHVFB30TB LP
UNVENTED LP-GAS FIRED ROOM HEATER
WARNING: If the information in this manual is not followed exactly, a re or explosion 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 or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
• Shut off gas supply
• Do not try to light any appliance
• Do not touch an electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the re department.
- Installation and service must be performed by a qualied installer, service agency, or the gas supplier.
WARNING: This is an unvented gas-red heater. It uses air (oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air must be provided. Refer to Fresh Air for Combustion
and Ventilation section on page 4 of this manual.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property
damage. Refer to this manual for correct installation and operational procedures. For assistance or additional
information consult a qualied installer, service agency, or gas supplier.
MR. HEATER, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 · 800-251-0001
04/13 70809 Rev13A
This appliance may be installed in an aftermarket* permanently manufactured (mobile) home, where not prohibited
by local codes. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not
convertible for use with any other gas.
*Aftermarket completion of sale, not for the purpose of resale, from the manufacturer.
WARNINGS
IMPORTANT: Read this owner’s manual carefully
and completely before trying to assemble, operate,
or service this heater. Improper use of this heater
can cause serious injury or death from burns, re,
explosion, electrical shock, and carbon monoxide
poisoning.
WARNING: This appliance is equipped for (natural
or propane) gas. Field conversion is not permitted.
WARNING: Do not use any accessory not approved for use with this heater.
WARNING: Any change to this heater or its controls can be dangerous.
• Do not place clothing or other ammable
material on or near the appliance. Never place
any objects on the heater.
• Due to high temperatures, heater should be
kept out of trafc and away from furniture and
draperies.
• Surface of heater becomes very hot when
running. Keep children and adults away from
hot surfaces to avoid burns or clothing ignition. Heater will remain hot for a time after
shutdown. Allow heater surfaces to cool before
handling.
• Young children should be carefully supervised
when they are in the same room with heater.
• Make sure grille guard is in place before running heater. If screen or grille guard is removed
for servicing it must be replaced prior to operating the heater.
• Keep the appliance area clear and free from
combustible materials, gasoline, and other
ammable vapors and liquids.
CONTENTS
WARNINGS ........................................................................ 2
SPECIFICATIONS ................................................................. 3
PRECAUTIONS .................................................................... 3
IGNITION SYSTEM BATTERY INSTALLATION .......................4
BLOWER FAN CONTROL SWITCH OPERATION ....................4
DETERMINING THE TYPE OF HEATER LOCATION SPACE .....5
INSTALLATION ...................................................................6
FASTENING HEATER TO WALL ............................................ 7
FLOOR MOUNTING AWAY FROM WALL .............................8
CONNECTING TO GAS SUPPLY ........................................... 8
OPERATING YOUR HEATER ............................................... 10
CLEANING AND MAINTENANCE .......................................11
TROUBLESHOOTING ........................................................ 14
EXPLODED-VIEW PARTS DRAWING ................................... 16
PARTS LIST ....................................................................... 17
WARRANTY .................................................................... 20
CAUTION: Never connect heater directly to the
Propane supply. This heater requires an external
regulator (not supplied). Install the external regulator between the heater and Propane/LP supply.
The installer must supply an external regulator.
The external regulator will reduce the incoming
gas pressure to between 11 and 14 inches of
water. If you do not reduce incoming gas pressure heater regulator damage could occur. Install
external regulator with the vent pointing down.
Pointing the vent down protects it from freezing
rain or sleet.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
2
SPECIFICATIONS
IR20TB LP IR30TB LP BF20TB LP BF30TB LP
BTU (Available) 20,000 30,000 20,000 30,000
Type of Gas LP-Gas Only LP-Gas Only LP-Gas Only LP-Gas Only
Ignition Battery ignitor (1-AA) Battery ignitor (1-AA) Battery ignitor (1-AA) Battery ignitor (1-AA)
Pressure Regulator Setting 10 Inches of Water 10 Inches of Water 10 Inches of Water 10 Inches of Water
Inlet Gas Pressure (Maximum) 14 Inches of Water 14 Inches of Water 14 Inches of Water 14 Inches of Water
Inlet Gas Pressure (Minimum) 11 Inches of Water 11 Inches of Water 11 Inches of Water 11 Inches of Water
Electrical Rating /Blower
Burners / Orice nozzles 3 4 1 1
Thermostatic Control Yes Yes Yes Yes
Clearances: inches (mm)
Top 36” (915cm) 36” (915cm) 36” (915cm) 36” (915cm)
Sides 10.5” (267cm) 10.5” (267cm) 10.5” (267cm) 10.5” (267cm)
Floor (min to top of carpet) 2” (51cm) 2” (51cm) 2” (51cm) 2” (51cm)
Fabric / ammable objects 36” (915cm) 36” (915cm) 36” (915cm) 36” (915cm)
120V, 60Hz , 1
120V, 60Hz , 1 120V, 60Hz , 1 120V, 60Hz , 1
PRECAUTIONS:
1. BF-20 LPT, BF-30 LPT, IR-20 LPT and IR-30 LPT
may not be installed in a bedroom or bathroom, or
any place where a strong wind would shut down the
appliance.
2. This heater needs outside ventilation air to run
properly. The Oxygen Depletion Sensor (ODS)
safety shutoff system shuts down the heater if not
enough fresh air is available. See Fresh Air for
Combustion and Ventilation, pages 5 through 6.
3. Keep all air openings in heater clear, free of debris
or any blockage. This will insure that enough air for
proper combustion enters the heater.
4. If heater shuts off, do not relight until you provide
fresh, outside air. If heater keeps shutting off, it
requires servicing.
5. Turn off and unplug heater and let cool before
servicing. Only a qualied service person should
service and repair heater.
6. Do not run heater:
• Where ammable liquids or vapors are used or
stored
• During dusty conditions.
7. Before using furniture polish, wax, carpet cleaner
or similar products, turn heater off. If heated the
vapors from these products may create a white
powder residue within burner box or on adjacent
walls or furniture.
8. Do not use heater if any part has been underwater.
Immediately call a qualied service technician to
inspect the room heater and to replace any part of
the control system and any gas control which has
been underwater.
9. Operating heater above elevations of 4,500 feet
could cause pilot/ODS to shutdown heater.
10. Always run heater with control knob in a locked position. Never set control knob between locked positions. Poor combustion and higher levels of carbon
monoxide may result if control knob is left between
locked positions.
DANGER: Carbon monoxide poisoning may lead to
death.
Carbon Monoxide Poisoning:
Early signs of carbon monoxide poisoning resemble the
u, with headaches, dizziness, or nausea. If you have
these signs, the heater may not be working properly.
Get fresh air at once! Have heater serviced. Some
people are more affected by carbon monoxide than others. These include pregnant women, persons with heart
or lung disease or anemia, those under the inuence of
alcohol, and those at high altitudes.
Propane/LP Gas:
Propoane/LP gas is odorless. An odor making agent is
added to propane/LP gas. The odor helps you detect
a Propane/LP gas leak. However the odor added to
propane/LP gas may be present even though no odor
exists. Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to
safe and proper operation of this heater.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
3
Product Features
Fan Blower
Switch
(located on back
of heater)
Burners
Ignitor Button
Control Knob
FRESH AIR FOR COMBUSTION AND
VENTILATION
WARNING: This heater shall not be installed in a
conned space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other
fuel-burning appliances in your home.
Grill
Heater
Cabinet
Front Panel
Figure 1
SAFETY DEVICE
This heater has a pilot with an Oxygen Depletion Sensor (ODS) safety shut off system. The ODS/pilot shuts
off the heater if there is not enough fresh air.
IGNITION SYSTEM / BATTERY INSTALLATION
– The heater is equipped with an electronic manual ignitor. This system requires no matches, or other source
to light heater, but does require one AA battery to operate ignitor. (AA Battery included).
To install or replace battery unscrew the ignitor cap
(red button), insert battery positive (+) terminal up
and replace cap.
(AA Battery included)
THERMOSTATIC CONTROL
These heaters have a control valve with a thermostat
sensing bulb. This results in the greatest heater comfort
and may result in lower bills.
BLOWER FAN CONTROL SWITCH OPERATION
These heaters also include an electrical blower. The
blower switch has three positions: MANUAL, OFF and
AUTO. In AUTO, the blower will turn on and off as the
heater cycles on and off. On MANUAL, the blower will run
continuously. To turn blower off, use the OFF position.
LOCAL CODES
Install and use heater with care.
Installation must conform to local codes or in the absences of local codes, use the latest edition of National
Fuel Gas Code ANSI Z223.1/NFPA 54.
UNPACKING
1. Remove heater from carton.
2. Remove all protective packaging applied to
heater for shipment.
3. Check heater for any shipping damage. If
heater is damaged, promptly inform dealer
where you bought heater.
ESTABLISHING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas
Code, NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation. All spaces in homes fall into
one of the three following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
This heater must not be installed in a conned space or
unusually tight construction unless provisions are provided for adequate combustion and ventilation air. The
information on pages 4 through 6 will help you classify
your space and provide adequate ventilation.
Unusually Tight Construction
If your home meets all of the three following criteria you
must provide additional fresh air. See Ventilation Air
from Outdoors, page 6.
Unusually tight construction is dened as construction
where:
a. Walls and ceilings exposed to the outside atmo-
sphere have a continuous water vapor retarder with
a rating of one perm (6 x 10
-11
kg per pa-sec-m2) or
less with openings gasketed or sealed and
b. Weather stripping has been added on openable win-
dows and doors, and
c. Caulking or sealants are applied to areas such as
joints around windows and door frames, between
wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at
other openings.
If your home does not meet all of the three criteria
above, see Determing the Type of Heater Location
Space, page 5.
Conned Space and Unconned Space
The National Fuel Gas Code, NFPA 54/ ANSI Z223.1
denes a conned space as a space whose volume is
less than 50 cubic feet per 1,000 Btu per hour (4.8 m3
per kW) of the aggregate input rating of all appliances
installed in that space, and an unconned space as a
space whose volume is not less than 50 cubic feet per
1,000 Btu per hour (4.8 m3 per kW) of the aggregate
input rating of all appliances installed in that space.
Rooms communicating directly with the space in which
the appliances are installed*, through openings not furnished with doors, are considered a part of the unconned space.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
4
*Adjoining rooms are communication only if there
are doorless passageways or ventilation grills between them.
DETERMINING THE TYPE OF HEATER
LOCATION SPACE:
Use this method to determine if you have a conned or
unconned space.
Note: the space includes the room in which you
install heater plus any adjoining rooms with doorless
passageways or ventilation grills between the rooms.
1. Find the volume of the space by multiplying room
length x width x height.
Example: Space size 18ft (length) x 18ft. (width) x 8ft.
(height) = 2592
If additional ventilation to adjoining room is supplied
with grills or openings, add the volume of these rooms
to the total volume of the space.
2. Divide the space volume by 50 cubic feet to deter-
mine the maximum Btu/hr the space can support.
Example: 2592 cu.ft. (volume of space) / 50 cu.ft. =
51.8 or 51,800 (maximum Btu/hr the space
can support)
WARNING: If the area in which the heater may be
operated is smaller than dened as an unconned
space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by the methods described in the National
Fuel Gas Code, NFPA 54/ ANSI Z223.1, Section
5.3 or applicable local codes.
3. Add the Btu/hr of all the fuel-burning appliances
in the space such as, Vent–free heater, Gas water
heater, Gas furnace, Vented gas heater, Gas replace logs, and Other gas appliances*
*Do not include direct-vent gas appliances. Directvent draws combustion air from the outdoors and
vents to the outdoors.
Example: Gas water heater 40,000 Btu/hr
Vent Free Heater + 20,000 Btu/hr
Total =60,000 Btu/hr
4. Compare the maximum Btu/hr the space can support
with the actual amount of Btu/hr used.
Example: 51,800 Btu/hr (maximum Btu/hr the
space can support)
60,000 Btu/hr (Actual amount of Btu/hr
used)
The space in the above example is a conned
space because the actual Btu/hr used is more than
the maximum Btu/hr the space can support.
You must provide additional fresh air. Your options
are as follows:
A. Rework worksheet, and the space of an adjoining
room. If the extra space provides an unconned
space, remove door to adjoining room or add ventilation grills between the rooms. See Ventilation Air
Unvented LP-Gas Vent Free Room Heaters
From Inside Building (Figure 2).
B. Vent room directly to the outdoors. See Ventilation
Air From Outdoors (Figure 3).
C. Install a lower Btu/hr heater if lower Btu/hr size
makes room unconned.
If actual Btu/hr used is less than the maximum Btu/
hr the space can support, the space is an unconned space. You will need no additional fresh air
ventilation.
VENTILATION AIR
Ventilation from Inside Building
This fresh air would come from an adjoining unconned
space. When ventilation to an adjoining unconned
space, you must provide two permanent openings: one
within 12” of the ceiling and one within 12” of the oor
on the wall connecting the two spaces (see options 1
& 2 of g. 2). You can also remove door into adjoining room (see option3, g 2). Follow the National Fuel
Gas Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for
Combustion and Ventilation for required size of ventilation grills or ducts.
12”
Ventilation
Gills into
Adjoining
Room Option 1
Or remove
door into
Adjoining
Room Option 3
Ventilation Gills into
Adjoining Room - Option 2
12”
Figure 2.
VENTILATION AIR
OUTLET AIR
OUTLET
AIR
INLET
AIR
VENTILATION CRAWL SPACE
VENTILATED
ATTIC
TO CRAWL
SPACE
Figure 3.
Installation Instructions and Owner’s Manual
5
TO ATTIC
WARNING: Rework worksheet, adding the space
of the adjoining unconned space. The combined
space must have enough fresh air to supply all appliance in both spaces.
Ventilation from Outdoors
If necessary provide extra fresh air by using ventilation grills or ducts. Connect these items directly to the
outdoors or spaces open to the outdoors. These include
attics* and crawl spaces. Follow the National Fuel Gas
Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation
grills or ducts.
*IMPORTANT: Do not provide openings for inlet or
outlet into attic. If attic has a thermostat-controlled
power vent, heated air entering the attic will activate
the power vent.
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is benecial, installing heater
in rooms without enough ventilation air may cause
mildew to form from too much moisture. See Fresh
Air for Combustion and Ventilation, pages 5 through
6.
INSTALLATION
NOTICE: This heater is intended for the use as supple-
mental heat. Use this heater along with your primary
heating system. Do not install this heater as your primary heat source. If you have a central heating system,
you may run system’s circulating blower while using
heater. This will help circulate the heat throughout the
house. In the event of a power outage, you can use this
heater as your primary heat source for the duration of
the outage.
WARNING: A qualied service person must install
heater. Follow all local codes.
CHECK GAS TYPE
Use only LP-gas. If your gas supply is not LP-gas, do
not install heater. Call dealer where you bought heater
for proper type heater.
THIS INSTALLATION REQUIRES:
Before installing heater, make sure you have the items
listed below:
• Piping (check local codes)
• Sealant (resistant to LP_Gas)
• Equipment shutoff valve*
*A CSA/AGA certied equipment shutoff valve with
1/8” NPT tap is an acceptable alternative to test gauge
connection. Purchase a CSA/AGA certied equipment
shutoff valve from your dealer.
LOCATING HEATER
This heater is designed to be mounted on the wall. The
heater can also be located on a non-combustible oor,
away from a wall by using the oor mounting stands included with the heater. If installed on combustible ooring such as carpeting, tile or other combustible material
other than wood ooring, the heater must be placed on
a wood panel the full width and depth of the appliance.
For convenience and efciency, install the heater:
• Where there is easy access for operation,
inspection, and service
• In the coldest part of the room.
• If planning to use fan, locate heater near an
electrical outlet.
CAUTION: If you install the heater in a home garage:
Heater pilot and burner must be at least 18 inches
above oor . Locate heater where moving vehicle will
not hit it.
CAUTION: This heater creates warm air currents.
These currents move heat to wall surfaces next to
heater. Installing heater next to vinyl or cloth wall
covering or operating heater where impurities (such
as tobacco smoke, aromatic candles, cleaning uids,
oil or kerosene lamps, etc.) are present in the air may
discolor walls.
WARNING: Never install the heater:
• In a bedroom (IR20LPT, IR30LPT, BF20LPT or
BF30LPT)
• In a recreational vehicle ·.
• Where curtains, furniture, clothing, or other
ammable objects are less than 36 inches from
the front, top, or sides of the heater.
• As a replace insert
• In high-trafc areas
• In windy or drafty areas
WARNING: Heater must be mounted to maintain
the minimum clearances shown in Figure 4. If possible, provide greater clearances from the oor, ceiling, and joining walls.
• Ground joint union
• Test gauge connection*
• Sediment trap
• Tee joint
• Pipe wrench
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
6
SEE
CLEARANCE
SPECIFICATIONS
ON PG. 3
Left
Side
Floor
2” min. to top surface of carpet, tile
or other combustible material
36” min. from
ceiling
Right
Side
Figure 4
FASTENING HEATER TO WALL
Mounting Bracket
The mounting bracket in located on the back panel of
heater (see gure 5). It has been taped there for shipping. Remove mounting bracket from back panel.
1. Attach to wall studs
2. Attach to wall anchor
Attaching to Wall Stud:
This way is the best providing the strongest mounting in
wood frame houses.
Attaching to Wall Anchor:
This way allows you to attach mounting bracket to hollow walls (wall areas between studs) or to solid walls
(concrete or masonry).
Decide which way best suits your needs. Either method
will provide a secure hold for the mounting bracket.
1. Tape mounting bracket to wall where heater
will be located. Make sure mounting bracket is
level. For wall stud mounting locate one end of
the mounting bracket over a wall stud.
WARNING: Maintain minimum clearances shown in
gure 7. If you can, provide greater clearances from
the oor and joining wall.
2. Mark screw locations on wall (see gure 7).
3. Remove tape and mount bracket from wall.
SEE CLEARANCE
SPECIFICATIONS ON PG. 3
Mounting
Bracket
Figure 5
Removing Front Panel of Heater
1. Remove three screws on bottom front of front
panel.
2. Pull bottom of front panel forward, then down
(see gure 6)
Figure 6
Attaching Mounting Bracket to Wall
Use holes on each end of mounting bracket to attach
bracket to wall. These holes are 16 inches apart. Attach
mounting bracket to wall in one of two following ways.
Unvented LP-Gas Vent Free Room Heaters
16” (Lg)
12-9/64” (Sm)
Adjoining Wall
Mark mounting hole locations
and drill holes where indicated.
Allow for minimum clearances
17-1/2” Min.
Figure 7
Attaching to Wall Stud:
For attaching mounting bracket to wall studs
1. Drill holes at marked locations using 9/64” drill
bit.
2. Place mounting bracket onto wall. Line up
holes on each end of bracket with hole drilled in
wall.
3. Insert mounting screws through bracket and
into wall studs.
4. Tighten screws until mounting bracket is rmly
fastened to wall studs.
Attaching to Wall using Anchor:
For attaching mounting bracket to hollow walls (wall areas between studs) or solid walls (concrete or masonry)
Note: Wall anchors, mounting screws, and spacer
are in hardware package. The hardware package is
provided with heater.
Installation Instructions and Owner’s Manual
7
1. Drill holes at marked locations using 5/16” drill
bit. For solid walls (concrete or masonry), drill
at least 1” deep.
2. Fold wall anchor as shown in gure 8 below.
Figure 8.
3. Insert wall anchor (wings rst) into hole. Tap
anchor ush to wall.
4. For thin walls (1/2” or less) insert red key into
wall anchor.
5. Place mounting bracket onto wall. Line up
holes on each end of bracket with wall anchors.
6. Insert mounting screws through bracket and
into wall anchors.
7. Tighten screws until mounting bracket is rmly
fastened to wall.
Placing Heater on Mounting Bracket
1. Locate two horizontal slots on back pane of
heater (see gure 9).
2. Place heater onto mounting bracket. Slide horizontal slots onto stand-out tabs on mounting
bracket.
4. If installing bottom mounting screw into hollow
or solid wall, install wall anchors. Follow steps 1
through 4 under Attaching to Wall using Anchor.
If installing bottom mounting screw into wall
stud, drill holes at marked locations using 9/64”
drill bit.
5. Re-place heater onto mounting bracket.
6. Place spacers between bottom mounting holes
and wall anchor or drilled hole.
7. Hold spacer in place with one hand. With the
other hand, insert mounting screw through
bottom mounting hole and spacer. Place tip of
screw in opening of wall anchor or drilled hole.
8. Tighten both screws until heater is rmly secured to wall. Do not over tighten.
Note: Do not re-place front panel at this time. Replace front panel after making gas connections and
checking for leaks.
FLOOR MOUNTING AWAY FROM WALL:
Horizontal Slots
Mounting Bracket
mounted to wall
Figure 9.
Installing Bottom Mounting Screws
1. Locate two bottom mounting holes. These
holes are near bottom on back panel of heater
(see gure 10).
Screw
hole
Figure 10
2. Mark screws locations on wall.
3. Remove heater from mounting bracket.
Screw
hole
Figure 11
Installing Support Feet (see gure 11)
1. Lay heater onto table on its back with bottom
edge overhanging table edge.
2. Securely attach feet to bottom of heater using
2 – self-tapping screws each.
Note: Feet should have long end going out the
front of heater, and the edge coinciding with side of
heater. If feet overhang side of the heater, switch
leg location.
3. Place heater on non-combustible surface (see
Locating Heater above) before proceeding with
gas connection. If this will be a permanent location, heater may be locked into position using
anchoring holes in mounting feet.
Note: Use of oor mounting feet will require you to
use a 3/8 NPT street elbow to make gas connection.
CONNECTING TO GAS SUPPLY
WARNING: A qualied service person must con-
nect heater to gas supply. Follow all local codes.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
8
WARNING: This appliance requires a 3/8” NPT
(National Pipe Thread) inlet connection to the
pressure regulator. Use of oor mounting feet will
require you to use a 3/8 NPT street elbow to make
gas connection.
CAUTION: Never connect heater directly to the Propane
supply. This heater requires an external regulator (not
supplied). Install the external regulator between the
heater and Propane/LP supply.
The installer must supply an external regulator. The external regulator will reduce the incoming gas pressure
to between 11 and 14 inches of water. If you do not
reduce incoming gas pressure heater regulator damage could occur. Install external regulator with the vent
pointing down. Pointing the vent down protects it from
freezing rain or sleet.
CAUTION: Use only new black iron or steel pipe.
Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of larger
enough diameter to allow proper gas volume to heater.
If pipe is too small, undue loss of pressure will occur.
Installation must include an equipment shutoff valve,
union and plugged 1/8” NPT tap. Locate NPT tap within
reach of test gauge hookup. NPT tap must be upstream
from heater (see gure 12).
Pressure
Regulator
3/8” NPT Pipe Nipple
Ground Joint Union
Equipment
Shutoff Valve
From regulated LP tank
(11” W.C. to 14” W.C.
Pressure)
3” Minimum
Tee Joint
Tee Joint
Pipe Nipple
Cap
Heater
Cabinet
Test Gauge
Connection
Reducer Bushing
to 1/8” NPT
1/8” NPT Plug Tap
Sediment
Trap
Figure 12
*A CSA/AGA certied equipment shutoff valve with
1/8” NPT tap is an acceptable alternative to test gauge
connection. Purchase the CSA/AGA certied equipment
shutoff valve from your dealer.
IMPORTANT: Install an equipment shutoff valve in an
accessible location. The equipment shutoff valve is for
turning on or shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male threads. This will
prevent excess sealant from going into pipe. Excess
sealant in pipe could result in clogged heater fuel train.
CAUTION: Use pipe joint sealant that is resistant to
LP-Gas.
Install sediment trap in supply line as shown in gure
12. Locate sediment trap where it is within reach for
cleaning. A sediment trap traps moisture and contaminants. This keeps them from going into heater. If
sediment trap is not installed or is installed improperly,
heater may not run correctly.
IMPORTANT: Hold pressure regulator with wrench
when connecting it to gas piping and/or ttings.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections for
leaks after installing or servicing. Correct all leaks
at once.
WARNING: Never use an open ame to check for
a gas leak. Apply a mixture of liquid soap and water
to all joints. Bubbles forming show a leak. Correct
all leaks at once.
PRESSURE TESTING GAS SUPPLY PIPING
SYSTEM
Test pressure in Excess of ½ psig (3.5kPa)
1. Disconnect appliance with its appliance main
gas valve (control valve) and equipment shutoff
valve from gas supply piping system. Pressures
in excess of ½ psig will damage heater regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either using
compressed air or opening main gas valve on
or near gas meter.
4. Check all connections and joints in gas supply
piping system. Apply mixture of liquid soap and
water to gas joints. Bubbles forming show a
leak.
5. Correct all leaks at once.
6. Depressurize and relieve pressure in supply
piping system.
7. Reconnect heater and equipment shutoff valve
to gas supply.
8. Reconnected ttings must be checked for leaks
in next section.
Test Pressure Equal To or Less Than ½ psig (3.5 kPa)
1. Close equipment shutoff valve (see gure 13).
2. Pressurize supply piping system by either using
compressed air or opening main gas valve on
or near gas meter.
3. Check all joints from the gas meter to equip-
ment shutoff valve (see gure 14). Apply
mixture of liquid soap and water to gas joints.
Bubbles forming show a leak.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
9
4. Correct all leaks at once.
5. Depressurize and relieve pressure from supply
piping system.
Pressure Testing Heater Gas Connections:
1. Make sure that the heater supply piping system is connected and has been leak tested as
described above.
2. Make sure control knob of heater is in OFF
position.
3. Open equipment shutoff valve (see gure 13).
4. Open main gas valve on or near gas meter.
5. Check all joints from equipment shutoff valve
to control valve (see gure 14). Apply mixture
of liquid soap and water to gas joints. Bubbles
forming show a leak.
6. Correct all leaks at once.
7. Light heater (see Operating Your Heater, pages
10 and 11. Check the rest of the internal joints
for leaks.
8. Turn off heater (see To Turn OFF Gas to Appli-
ance, page 11.
9. Replace lower front panel.
Open
Equipment
Shutoff Valve
Closed
Figure 15
ELECTRICAL WIRING DIAGRAM:
If any original wiring as supplied with the heater must
be replaced, it must be replaced with type AWG 105oC
wire or its equivalent except as indicated.
WARNING: Electrical Grounding Instructions: This
heater is equipped with a three-prong (grounding)
plug for your protection against shock hazard and
should be plugged into a properly grounded threeprong receptacle.
OPERATING YOUR HEATER
To regulated propane
source
Figure 13
Equipment
Shutoff Valve
Figure 14
Control Valve
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions
exactly, a re or explosion may result causing property damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted
by pushing the ignitor button. When lighting the
pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appli-
ance area for gas. Be sure to smell next to the
oor because some gas is heavier than air and
will settle on the oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you can not reach your gas supplier, call the
re department.
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If knob will not
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
10
push in or turn by hand, don’t try to repair it call
a qualied service technician or gas supplier.
Force or attempted repair may result in a re or
explosion.
D. Do not use this appliance if any part has been
underwater. Immediately call a qualied service
technician to inspect the appliance and to replace any part of the control system which has
been underwater.
LIGHTING INSTRUCTIONS
1. STOP! Read the all safety information included
with and on the side of heater.
2. Make sure the equipment shutoff valve is fully
open.
3. Push in gas control knob and slightly turn clock-
wise to the OFF position (see gure 19).
4. Wait ve (5) minutes. Then smell for gas includ-
ing near the oor. If you smell gas, STOP! Follow “B” in the safety information above. If you
do not smell gas, go to the next step.
5. Push in and turn control knob counterclockwise
to PILOT. Press in control knob for ve (5) seconds.
Note: The rst time that the heater is operated after
connecting the gas supply, the control knob should
be depressed for about 30 seconds. This will allow
air to bleed from the gas system. This may take
longer in some installations
9. To select the desired heat level, turn the
temperature setting knob counterclockwise to
between 1 & 5.
THERMOSTAT CONTROL OPERATION
FOR IR20LPT / IR30LPT: The thermostatic control
used simply turns on and off the burner.
FOR BF20LPT / BF30LPT: The thermostatic control
used modulates the ame size as the temperature gets
closer to set point, then it turns off the burner upon
reaching temperature.
The burner will cycle back on when room temperature
drops below the set temperature. The control knob can
be set to any heat level between 1 and 5. Selecting the
HI setting will cause the burner to remain on.
TO TURN OFF GAS TO APPLIANCE
SHUTTING OFF HEATER
1. Turn control knob clockwise to the OFF position.
2. Turn off all electrical power to the appliance if
servicing is to be preformed.
3. Turn off equipment shutoff valve.
SHUTTING OFF BURNER ONLY (PILOT STAYS LIT)
1. Turn control knob clockwise to the PILOT/IGN
position.
INSPECTING BURNER
Check pilot ame pattern and burner ame pattern
often.
Ignitor Button
6. With control knob pressed in, push down and
release the ignition button. This will light pilot. If
needed keep pressing igniter button until pilot
lights.
7. Keep control knob pressed in for (30) seconds
after lighting pilot. After 30 seconds, release
control knob.
Control Knob
Figure 19.
• If pilot does not stay lit, refer to Troubleshoot-
ing, pages 14 & 15. Also, contact a qualied
service person of gas supplier for repairs.
• If control knob does not pop up when released,
contact a qualied service person or gas supplier for repairs.
8. When the pilot is lit, turn control knob counterclockwise to heating level. The main burner
should light.
PILOT FLAME PATTERN
Figure 21 shows a correct pilot ame pattern. Figure
22 shows an incorrect pilot ame pattern. The incorrect
pilot ame pattern is not touching thermocouple. This
will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down. If pilot ame
pattern is incorrect, as shown in Figure 22:
• Turn heater off (see To Turn OFF Gas to Appli-
ance, above.
• See Troubleshooting, pages 14-15.
CLEANING AND MAINTENANCE
WARNING: Turn off heater and let cool before
servicing.
CAUTION: You must keep control areas, burner
and circulation air passageways of heater clean.
Inspect these areas of heater before use. Have
the heater inspected yearly by a qualied service
person. Heater may need more frequent cleaning
due to excess lent from carpeting, bedding material,
pet hair, etc.
Make sure grille guard is in place before running
heater. If screen or grille guard is removed for
servicing it must be replaced prior to operating the
heater.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
11
Note: Your heater may have either pilot assembly.
Figure 17
Correct pilot position.
Figure 21
A yellow tip on the pilot ame indicates dust and dirt in
the pilot assembly. To clean the pilot assembly nd the
small pilot air inlet hole about two inches from where
the pilot ame comes out of the pilot assembly (see
gure 25). With the unit off, lightly blow air through the
air inlet hole. You may blow through a drinking straw if
compressed air is not available.
Pilot Air Inlet Hole
Pilot Assembly
Figure 25
CLEANING HEATER CABINET
Air passageways
• Use a vacuum cleaner or pressurized air to
clean
Exterior
• Use a soft cloth dampened with a mild soap
and water mixture. Wipe the cabinet to remove
dust.
Incorrect pilot position.
Figure 22
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in sooting and property damage.
CLEANING ODS/PILOT AND BURNER
• Use as vacuum cleaner, pressurized air or
small soft bristled brush to clean.
CLEANING BURNER PILOT AIR HOLE INLET
We recommend that you clean the unit ever 2,500
hours of operation or every three months. We also
recommend that you keep the burner tube and pilot
assembly clean and free of dust and dirt. To clean these
parts we recommend using compressed air no greater
than 30 psig.
This can be done by using a vacuum cleaner in the
blow position, using compressed air in a can, please
follow the directions on the can. If you don’t follow
directions on the can you could damage the burner or
pilot assembly. In addition, the directions that follow
should also be followed.
1. Shut off the unit, including the pilot. Allow the
unit to cool for at least thirty minutes.
2. Inspect burner and pilot for dust and dirt.
3. Blow air through the port/slots and holes in the
burner.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
12
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Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
13
TROUBLESHOOTING
NOTE: All troubleshooting items are listed in order of operation and likely occurrence.
WARNING: Only a qualied service person should service and repair heater.
CAUTION: Never use a wire needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit.
Make sure grille guard is in place before running heater. If screen or grille guard is removed for servicing it must be
replaced prior to operating the heater.
WARNING: If you smell gas:
• Shut off gas supply
• Do not try to light any appliance
• Do not touch any electrical switch; do not use any phone in your building
• Immediately call you gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the re department.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors and possible discoloration of walls and ceilings.
OBSERVED SYMPTOM POSSIBLE CAUSE REMEDY
When ignitor button is pressed in, there is
no spark at pilot
ODS/pilot lights but ame goes out when
control knob is released
When ignitor button is pressed in, there is
a spark at the ODS/pilot but no ignition
1. Ignitor electrode positioned wrong.
2. Ignitor electrode is broken.
3. Ignitor electrode not connected to
ignitor.
4. Ignitor cable pinched or wet.
5. Broken ignitor cable.
6. Bad Piezo ignitor.
7. Low Battery.
1. Gas supply turned off or equipment
shutoff valve closed.
2. Control knob not fully pressed in while
pressing ignition button.
3. Air in gas line when installed.
4. ODS/pilot is clogged.
5. Gas regulator setting is not correct
6. Control knob not in pilot position
7. Thermocouple connection loose at
control valve
8. Pilot ame not touching thermocouple,
which allows thermocouple to cool,
causing pilot ame to go out. This
problem could be caused by one or
both of the following:
a. Low gas pressure
b. Dirty or partially clogged ODS/pilot
1. Control knob not fully pressed in.
2. Control knob not pressed in long
enough
3. Equipment shutoff valve not fully open
4. Thermocouple damaged
5. Control valve damaged
1. Reposition electrode
2. Replace electrode
3. Reconnect ignitor cable
4. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry.
5. Replace ignitor cable
6. Replace control valve
7. Replace battery
1. Turn on gas supply turn off or open
equipment shutoff valve closed
2. Fully press in control knob while pressing ignition button
3. Continue holding down control knob.
Repeat ignition operation until air is
removed.
4. Clean ODS/pilot (see Cleaning and
Maintenance pages 11 and12).
5. Replace gas regulator
6. Turn Control knob to pilot position
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in for 30 seconds
3. Fully open equipment shutoff valve
4. Hand tighten thermocouple nut until
snug, and then tighten 1/4 turn more.
5. -
a. Contact local gas company
b. Clean ODS/pilot (see Cleaning and
Maintenance, pages 11 and 12).
6. Replace thermocouple
7. Replace Control valve.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
14
Burner does not light after ODS/pilot is lit 1. Burner orice is clogged
2. Burner orice diameter to small
3. Inlet gas pressure is too low
Delayed ignition of burner 1. Manifold pressure is too low
2. Burner orice is clogged
1. Clean burner orice (see Cleaning and
Maintenance on page 11), or replace
burner orice
2. Replace burner orice
3. Contact local gas company
1. Contact local gas company
2. Clean burner orice (see Cleaning and
Maintenance on page 11), or replace
burner orice
Burner backring during operation 1. Burner orice is clogged or damaged
2. Burner damaged
3. Gas regulator defective
Burner plaque(s) does not glow [Infrared
Only]
1. Plaque damaged
2. Control knob set between locked positions.
3. Inlet gas pressure is too low
Slight smoke or odor during initial opera-
1. Residues from manufacturing process 1. Problem will stop after a few hours of
tion
Heater produces a whistling noise when
burner is lit
1. Turning control knob to HI position
when burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orice.
White powder residue forming within
burner box or on adjacent walls or furni-
ture
1. When heated, vapors from furniture
polish, wax, carpet cleaners, etc., turn
into white powder residue
Heater produces unwanted odors. 1. Heater burning vapors from paint, hair
spray, glues, etc. See IMPORTANT
statement on page 14.
2. Gas leak. See WARNING statement at
top of page 14.
Heater shuts off in use (ODS operates) 1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
Gas odor even when control knob is in
OFF position
1. Gas leak. See WARNING statement at
top of page 14.
2. Control valve is defective
Gas odor during combustion 1. Foreign matter between control valve
and burner
2. Gas leak. See WARNING statement at
top of page 14.
Heater produces a clicking/ticking noise
just after burner is lit or shut off
Moisture/condensation noticed on win-
1. Metal expanding while heating or contracting while cooling
1. Not enough combustion/ventilation air 1. Refer to Fresh Air for Combustion and
dows
1. Clean burner orice (see Cleaning and
Maintenance on pages 11 and 12), or
replace burner orice
2. Replace burner
3. Replace gas regulator
1. Replace burner
2. Turn control knob until it locks at desired setting.
3. Replace gas regulator
operation
1. Turn control knob to LO position and
let warm up for a minute.
2. Operate burner until air is removed
from line have gas line checked by local gas company.
3. Observe minimum installation clearances (see Figure 4 page 7)
4. Clean burner orice (see Cleaning and
Maintenance on pages 11 and 12), or
replace burner orice.
1. Turn heater off when using furniture
polish, wax, carpet cleaner or similar
products.
1. Ventilate room. Stop using odor-causing products while heater is running.
2. Locate and correct all leaks (see
Checking Gas Connections, page 10)
1. Open window and/or door for
ventilation
2. Contact local gas company
3. Clean ODS/pilot (see Cleaning and
Maintenance, pages 11 and 12)
1. Locate and correct all leaks (see
Checking Gas Connections, page 10)
2. Replace control valve
1. Take apart gas tubing and remove
foreign matter
2. Locate and correct all leaks (see
Checking Gas Connections, page 10)
1. This is common with most heaters. If
noise is excessive, contact qualied
service person
Ventilation page 3 through 5.
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
15
BF20TB LP
BF30TB LP
24
3
1-1
IR20TB LP
IR30TB LP
11
45
24
1-3
42
42
45
9
29
20
5
1-2
9
20
29
14
7
22-1
44
33-1
8
6
22-3
13
2
23
33-1
8
17
16
15
26
4
27-2
28-2
3
7
26
35
10
10
22-2
1-4
22-1
11
25
1-1
1-4
38
39
12
16-1
16-2
Unvented LP-Gas Vent Free Room Heaters
16
21
36
18
13
4
27-1
28-1
5
6
23
44
22-3
2
Installation Instructions and Owner’s Manual
16
1-3
22-2
1-2
25
For all models, Equipment shutoff valve with 1/8” NPT tap.
IR20TB LP, IR30TB LP, BF20TB LP, BF30TB LP • PARTS LIST
This list contains replacement parts used in your heater. When ordering parts, follow the instructions listed
under Replacement Parts on page 20 of this manual.
ITEM PART NO. DESCRIPTION QTY.
IR20TB LP BF20TB LP IR30TB LP BF30TB LP
1 70600 70600 70605 70605 Cabinet assembly 1
1-1 70601 70601 70606 70606 Cabinet Top Panel 1
1-2 70603 70603 70603 70603 Cabinet Right Panel 1
1-3 70602 70602 70607 70607 Cabinet back Panel 1
1-4 70704 70704 70704 70704 Cabinet Left Panel 1
2 70608 70608 70609 70609 Lower Front panel assembly 1
3 70742 70742 70744 70744 Reector Assembly 1
4 70830 70633 70831 70635 Burner Assembly 1
5 70636 70636 70636 70636 Wall Mounting Bracket 1
6 70637 70637 70637 70637 Thermostat Valve Mounting bracket 1
7 70821 70821 70822 70822 Bezel – Reector Front 1
8 70828 70828 70828 70828 Thermostat Valve assembly 1
9 70641 70641 70641 70641 Ignitor Module Mounting Bracket 1
10 70682 70682 70682 70682 High Limit Switch 1
11 70644 70644 70644 70644 Ignitor Module, Battery powered 1
12 70825 – -- – Holder, Orice, Vent Free 3
-- -- 70825 -- 4
13 70357 70357 70357 70357 Pressure regulator 1
14 --- 70646 --- 70648 Glass 1
15 --- 70647 --- 70649 Glass Mounting Bracket 1
16 70339 70339 70339 70339 ODS / Pilot Assembly 1
17 – 70826 – 70826 Bracket, Burner, Mtg, Blue Flame 2
18 70650 --- 70652 --- Gas Manifold 1
20 70847 70847 70847 70847 Access Cover Plate 1
21 70655 --- 70655 --- ODS mounting bracket 1
22-1 70741 70741 70743 70743 Heat Shield – Top 1
22-2 70745 70745 70745 70745 Heat Shield – Right 1
22-3 70751 70753 70752 70754 Heat Shield – Back 1
23 70663 70663 70663 70663 Regulator Mounting Bracket 1
24 70664 70664 70664 70664 Control / ignitor cover 1
25 70665 70665 70665 70665 Floor mount feet 2
26 70666 70666 70667 70667 Grill guard 1
27-1 — — 70837 --- Orice, 30, IR 4
27-2 — — — 70843 Orice, 30, BF 1
28-1 70839 – – – Orice, 20, IR 3
28-2 – 70844 – – Orice, 20, BF 1
29 70740 70740 70740 70740 Fan Assembly 1
30 – – – – – –
31 – – – – – –
32 – – – – – –
33-1 70756 70756 70756 70756 Heat Shield – Left 1
35 70675 – 70676 – Bracket, Top, Plenum Assembly 1
36 70675 – 70676 – Bracket, Bottom, Plenum Assembly 1
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
17
ITEM PART NO. DESCRIPTION QTY.
IR20TB LP BF20TB LP IR30TB LP BF30TB LP
37 – – – – – –
38 -- – 70677 – Burner Plaques, 30 4
39 70677 – -- – Burner Plaques, 20 3
40 -- – 70678 – Plaques Gasket, 30 4
41 70678 – -- – Plaques Gasket, 20 3
42 70701 70701 70701 70701 Ignition Cap 1
44 70597 70597 70597 70597 3/8” FTP x 3/8” MPT Elbow
45 70590 70590 70590 70590 AA Battery
* 70680 70680 70680 70680 Power Cord 1
* 70679 70679 70679 70679 Strain Relief Grommet 1
* 70689 – 70692 – Right Burner Gas Tube 1
* 70690 – 70693 – Right Middle Gas Burner Tube 1
* – – 70598 – Left Middle Gas Burner Tube 1
* 70691 – 70694 – Left Burner Gas Tube 1
* 70695 70695 70696 70696 ODS Gas Tube Assembly 1
* 70697 70697 70697 70697 Regulator to Thermostat Valve Tube Ass’y 1
* 70698 – 70698 – Thermostat Valve to Manifold Tube 1
* 70341 70341 70341 70341 Ignitor Wire 1
* 70699 – 70699 – Gas Manifold Nut 1
* 70342 70342 70342 70342 Hardware Kit 1
* 70343 70349 70345 70346 CSA Label 1
* 70349 70349 70349 70349 Gas Instruction Decal 1
* 70350 70350 70350 70350 Inside Warning Label 1
* 70351 70351 70351 70351 Thermostat Sensing Bulb Clip 2
** Not sold separately – Must purchase Assembly
* Items not shown
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
18
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Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
19
OPERATING INSTRUCTIONS
and Owner’s Manual
read InsTruCTIOns CareFullY: Read and follow all instructions. Place instructions in a safe
place for future reference. Do not allow anyone who has not read these instructions to assemble,
light, adjust or operate the heater.
warnInG:
USE ONLY MANUFACTURER’S REPLACEMENT PARTS. USE OF ANY OTHER PARTS
COULD CAUSE INJURY OR DEATH. REPLACEMENT PARTS ARE ONLY AVAILABLE
DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED SERVICE
AGENCY.
rePlaCeMenT ParTs OrderInG InFOrMaTIOn:
PurCHasInG: Accessories may be purchased at any Mr. Heater local dealer or
direct from the factory
FOr InFOrMaTIOn reGardInG serVICe
Model # Start Serial#
MHVFR20TB LP EC-55546-13001001
MHVFR30TB LP EC-55468-13001001
MHVFB20TB LP EC-55474-13001001
MHVFB30TB LP EC-55739-13001001
Please call Toll-Free 800-251-0001
www.mrheater.com
Our office hours are 8:30 AM – 5:00 PM, EST, Monday through Friday.
Please include the model number, date of purchase, and description of problem in
all communication.
lIMITed warranTY
Mr. Heater, Inc. warrants its heaters and accessories to be free from defects in
material and workmanship for a period of 1 year from date of purchase. Mr. Heater,
Inc. will repair or replace this product free of charge if it has been proven to be
defective within the 1-year period, and is returned at customer expense with proof
of purchase to Mr. Heater, Inc. within the warranty period.
Mr. Heater, Inc. reserves the right to make changes at any time, without notice or
obligation, in colors, specifications, accessories, materials and models.
Mr. Heater, Inc., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 800-251-0001
Mr. Heater is a registered trademarks of Mr. Heater, Inc.
© 2009, Mr. Heater. All rights reserved
ANSI Z21.11.2b - 2010
Unvented LP-Gas Vent Free Room Heaters
Installation Instructions and Owner’s Manual
20
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