Mr. Heater MHVFIH10LPT Operating Instructions Manual

Installer: Leave this manual with the appliance. Consumer: Retain this manual for future reference.

OPERATING INSTRUCTIONS

AND OWNER’S MANUAL

Model #

MHVFIH10LPT

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.

Blue Flame Ice House Heater

MHVFIH10LPT

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 qualied 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 qualied installer, service agency, or gas supplier.

Unvented Liquid Propane Fired Room Heater

Mr. Heater, 4560 W. 160TH ST., CLEVELAND, OHIO 44135 · 800-251-0001

Installation Instructions and Owner’s Manual

1

02/15 70810 2015 JM

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 trafc 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

THERMOSTATIC CONTROL ................................................. 4

DETERMINING THE TYPE OF HEATER LOCATION SPACE .....4

INSTALLATION ................................................................... 5

FASTENING HEATER TO WALL ............................................ 6

FLOOR MOUNTING AWAY FROM WALL .............................8

CONNECTING TO GAS SUPPLY ........................................... 8

OPERATING YOUR HEATER ............................................... 10

CLEANING AND MAINTENANCE .......................................11

TROUBLESHOOTING ........................................................ 13

WARRANTY .................................................................... 16

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 Liquid Propane Fired Room Heater

Installation Instructions and Owner’s Manual

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SPECIFICATIONS

MHVFIH10LPT

BTU (Available) 10,000

Type of Gas LP-Gas Only

Ignition Push Button Piezo

Pressure Regulator Setting 10” W.C.

Inlet Gas Pressure (Maximum) 14” W.C.

Inlet Gas Pressure (Minimum) 11” W.C.

Burners / Orice Nozzles 1

Thermostatically Controlled Yes

Clearances: Inches (mm)

Top 36” (91.4cm)

Sides 10” (25.4cm)

Floor 3” (7.62cm)

Fabric 36” (914.4cm)

PRECAUTIONS:

1. MHVFIH10LPT may be installed in a bedroom, but
not a 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, page 3.t

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 let cool before servicing. Only a quali­ed 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 qualied 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 inuence 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.

Product Features

Control Knob

Burners

Grill

Heater
Cabinet

Front Panel

Figure 1

Unvented Liquid Propane Fired Room Heater

Installation Instructions and Owner’s Manual

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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

PIEZO: BF10LP/ IR10LP – The heater is equipped with

a piezo manual ignitor. This system requires no match­es, batteries, or other source to light heater.

THERMOSTATIC CONTROL

These heaters have a control valve with a thermostat
sensing bulb. This results in the greatest heater comfort
and may reult in lower fuel bills.

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.

FRESH AIR FOR COMBUSTION AND
VENTILATION

WARNING: This heater shall not be installed in a

conned 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.

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 classications:

1. Unusually Tight Construction

2. Unconned Space

3. Conned Space

This heater must not be installed in a conned space or
unusually tight construction unless provisions are pro­vided for adequate combustion and ventilation air. The
information on pages 3 through 5 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 5.

Unusually tight construction is dened 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
less with openings gasketed or sealed and

b. Whether stripping has been added on operable 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 you home does not meet all of the three criteria

above, see Determing the Type of Heater Location
Space, below.

-11

kg per pa-sec-m2) or

Conned Space and Unconned Space

The National Fuel Gas Code, NFPA 54/ ANSI Z223.1

denes a conned 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 unconned 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 uncon­ned space.

*Adjoining rooms are communication only if there
are odorless passageways or ventilation grills be-

tween them.

DETERMINING THE TYPE OF HEATER
LOCATION SPACE:

Use this method to determine if you have a conned or
unconned 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 deter­mine 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 dened as an unconned
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

Unvented Liquid Propane Fired Room Heater

Installation Instructions and Owner’s Manual

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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 conned
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 unconned
space, remove door to adjoining room or add venti­lation grills between the rooms. See Ventilation Air
From Inside Building (Fig. 2)

B. Vent room directly to the outdoors. See Ventilation

Air From Outdoors (Fig. 3).

C. Install a lower Btu/hr heater if lower Btu/hr size

makes room unconned.

If actual Btu/hr used is less than the maximum Btu/
hr the space can support, the space is an uncon­ned space. You will need no additional fresh air
ventilation.

VENTILATION AIR

Ventilation from Inside Building

This fresh air would come from an adjoining unconned
space. When ventilation to an adjoining unconned
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 gure 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.

WARNING: Rework worksheet, adding the space

of the adjoining unconned space. The combined
space must have enough fresh air to supply all ap-

pliance 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

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 ATTIC

TO CRAWL
SPACE

Figure 3.

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 benecial, 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 3
through 5.

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.

Unvented Liquid Propane Fired Room Heater

Installation Instructions and Owner’s Manual

5