Mr Heater Heaters Instruction Manual - Manuals+ (2023)

heaters

OWNER'S MANUAL AND OWNER'S MANUAL
READ INSTRUCTIONS CAREFULLY: Read and follow all instructions. Keep the 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.
INSTALLER: Leave this manual with the unit. CONSUMER: Keep this manual for future reference.
UNVENTILATED NATURAL GAS FIRED SPACE HEATING

plaque heaters
MHVFRD20NGBT
(BLOWER INCLUDED)
MHVFRD20NGT
(BLOWER SOLD SEPARATELY)

Blue flame heaters
MHVFBF20NGBT
(BLOWER INCLUDED)
MHVFBF20NGT
(BLOWER SOLD SEPARATELY)

MHVFRD30NGBT
(BLOWER INCLUDED)
MHVFRD30NGT
(BLOWER SOLD SEPARATELY)

MHVFBF30NGBT
(BLOWER INCLUDED)
MHVFBF30TNGT
(BLOWER SOLD SEPARATELY)

WARNING: Failure to follow the information in this manual exactly could result in a fire or explosion resulting in property damage, personal injury, or death. – Do not store or use gasoline or other flammable vapors and liquids near this or any other device. – WHAT TO DO IF YOU SMELL GAS
· Shut off the gas supply. · Do not attempt to light an appliance. · Do not touch any electrical switch; Do not use a telephone 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 fire brigade. – Installation and maintenance must be performed by a qualified installer, service agency or the gas supplier.

WARNING: This is an unvented gas fired heater. It uses air (oxygen) from the room in which it is installed. Sufficient combustion and ventilation air must be provided. Refer to the Fresh Air for Combustion and Ventilation section on page 4 of this manual.
WARNING: Improper installation, adjustment, modification, service, or maintenance can result in personal injury or property damage. Refer to this manual for correct installation and operation. Contact a qualified installer, service agency or gas supplier for assistance or additional information.

This equipment may be installed in a permanently manufactured aftermarket home, except where prohibited by local regulation. This device may only be operated with the type of gas specified on the type plate. This device is not convertible for use with other gases.

HERR. HEATER, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 · 800-251-0001

2017 – K.B

WARNINGS

IMPORTANT: Read this manual carefully and completely before attempting to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electric shock, and carbon monoxide poisoning.

WARNING: This appliance is designed for natural gas. Field conversion is not allowed.
WARNING: Do not use accessories that are not approved for use with this heater.
WARNING: Any modification to this heater or its controls could be dangerous.
· Do not place clothing or other flammable materials on or near the device.
· Due to the high temperatures, the heater should be kept out of traffic and away from furniture and curtains.
· The surface of the heater becomes very hot during operation. Keep children and adults away from hot surfaces to avoid burns or clothing inflammation. The heater remains hot for a while after it has been switched off. Allow heating surfaces to cool before handling.

· Young children should be carefully supervised when in the same room as the heater.
· Make sure the grille guard is in place before turning on the heater. If screen or grid guards are removed for maintenance, they must be replaced prior to heater operation.
· Keep the area clean and free of combustible materials, gasoline and other combustible vapors and liquids.
· Children and adults should be made aware of the danger of high surface temperature and stay away to avoid burns or inflammation of clothing.
· Any safety shields or guards removed to service an appliance must be replaced prior to heater operation

CONTENTS
WARNINGS …………………………………………………………………………… 2
SPECIFICATIONS………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………
PRECAUTIONS ………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………. …..4
DETERMINING THE TYPE OF HEATING ROOM …..5
INSTALLATION …………………………………………………………. 6 MOUNTING THE HEATER TO THE WALL ……………………………………..7 FLOOR MOUNTING AWAY FROM THE WALL …………..8 CONNECTING TO THE GAS SUPPLY ……………… … ………………….8th
OPERATION OF YOUR HEATING…………………………………………….. 10
CLEANING AND MAINTENANCE …………………………………11 TROUBLESHOOTING ……………………………………………….. 14 EXPLODED PARTS DIAGRAM ……………… …… ……….. 16 PARTS LIST ……………………………………………….. 17 WARRANTY ……………………………… ……… ……………….. 20

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Unvented Natural Gas Vent Free Room Heaters

2 installation instructions and user manual

SPECIFICATIONS
**Operating the heater above altitudes of 4,500 feet may cause the Pilot/ODS to turn off the heater.**

MHVFRD20TB / MHVFRD20T VON

MHVFRD30TB / MHVFRD30T FROM

MHVFBF20TB / MHVFBF20 OF

MHVFBF30TB / MHVFBF30T VON

BTU (available)

20.000

30.000

20.000

30.000

Art des Gases

Natural gas only

Natural gas only

Natural gas only

Natural gas only

ignition

Battery igniter (1-AA) Battery igniter (1-AA) Battery igniter (1-AA) Battery igniter (1-AA)

Adjustment of the pressure regulator

4.5 inch water 4.5 inch water 4.5 inch water 4.5 inch water

Inlet gas pressure (maximum) 10.5 in. water column 10.5 in. water column 10.5 in. water column 10.5 in. water column

Inlet gas pressure (minimum) 7 inches water gauge

7 inches of water

9 inches of water

9 inches of water

Electrical Power/Fan

120 V, 60 Hz, 1

120 V, 60 Hz, 1

120 V, 60 Hz, 1

120 V, 60 Hz, 1

Thermostatic control

And

And

And

And

Spacing: inches (mm)

above

36″ (915cm)

36″ (915cm)

36″ (915cm)

36″ (915cm)

pages

10″ (254cm)

10″ (254cm)

10″ (254cm)

10″ (254cm)

Floor (min. to top of carpet) 3″ (76cm)

3″ (76cm)

3″ (76cm)

3″ (76cm)

Cloth / combustible objects 36″ (915cm)

36″ (915cm)

36″ (915cm)

36″ (915cm)

PRECAUTIONS:
1. 20,000 or 30,000 BTU heaters must not be installed in a bedroom or bathroom or in any location where a strong wind would turn off the device.
2. This heater requires outside air to function properly. The low oxygen sensor (ODS) safety shutdown system shuts off the heater if there is not enough fresh air available. See Fresh Air for Combustion and Ventilation, pages 4 through 6.
WARNING: An unvented heater with an input power greater than 10,000 Btu/hr (2,931 W) must not be installed in a bedroom or bathroom. 3. Keep all air openings in the heater clear and free of dirt or obstructions. This ensures that enough air enters the heater for proper combustion.
4. If the heater shuts off, do not light it again until you provide fresh outside air. If the heater keeps shutting off, it needs service.
5. Turn off the heater, unplug the power cord and allow to cool before servicing. Only a qualified service technician should service and repair the heater.
6. Don't run the heater:
· Where flammable liquids or vapors are used or
stored
· In dusty conditions.
7. Turn off the heater before using furniture polish, wax, carpet cleaner, or similar products. When heated, the fumes from these products may leave white powder residue inside the burner body or on adjacent walls or furniture.
8. Do not use the heater if any part was submerged. Call a qualified service technician immediately to inspect the space heater and replace any control system parts and any gas controls that were submerged.

9. Operating the heater above 4,500 feet may cause the Pilot/ODS to turn off the heater.
10. Always operate the heater with the control knob in the locked position. Never move the control knob between locked positions. Poor combustion and higher levels of carbon monoxide can result if the control knob is left between the locked positions.
DANGER: Carbon monoxide poisoning can cause death.
Carbon Monoxide Poisoning:
Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly. Get some fresh air now! Have the heater serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, those with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes.
Natural gas:
Raw natural gas is odorless. An odor-causing agent is added to natural gas to help you identify a natural gas leak. However, the odor added to natural gas may fade. Thus, natural gas may be present although no odor is detected. Make sure you read and understand all warnings. Keep this manual for future reference. It is your guide to the safe and proper operation of this heater.

3 Unvented space heaters with no natural gas vent

Installation Guide and User Guide

product features
fan switch
(located on the back of the heater)
Brenner

Ignition Knob Control Knob

Grill front panel

heating cabinet

*Fan not included with all units Figure 1
SAFETY DEVICE This heater has a pilot light with an oxygen deficiency sensor (ODS) safety shutdown system. The ODS/Pilot switches off the heating if there is not enough fresh air.
IGNITION SYSTEM / BATTERY INSTALLATION The heater is equipped with an electronic manual igniter. This system does not require matches or other sources to light the heater, but does require one AA battery to operate the igniter. (AA battery included).
To install or replace the battery, unscrew the ignition cap (red knob), insert the battery positive (+) side up, and replace the cap.
(AA battery included)
THERMOSTATIC CONTROL
These heaters have a control valve with a thermostatic sensor. This results in maximum heating comfort and can result in lower bills.
BLOWER FAN CONTROL SWITCH OPERATION
For models with electric blower. The blower switch has three positions: MANUAL, OFF, and AUTO. In AUTO, the fan turns on and off when the heater turns on and off. On MANUAL, the fan runs continuously. To turn off the fan, use the OFF position.
LOCAL CODES
Install and use the heater with care.
The installation must conform to local codes or, in the absence of local codes, use the latest edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54.
UNPACKING 1. Take the heater out of the carton. 2. Remove all protective packaging from the heater for shipping. 3. Check the heater for transport damage. If the heater is damaged, immediately inform the dealer where you bought the heater.

FRESH AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater should not be installed in a confined space or unusually cramped structure unless provision is made for adequate combustion and ventilation air. Read the following instructions to ensure adequate ventilation for this and other fuel burning appliances in your home.
PROVIDE ADEQUATE VENTILATION
The following are excerpts from the National Fuel Gas Code, NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation. All rooms in apartments fall into one of the following three ventilation classifications:
1. Unusually narrow construction
2. Unlimited space
3. Limited space
This heater should not be installed in a confined space or unusually narrow structure unless provision is made for adequate combustion and ventilation air. The information on pages 4 to 6 will help you classify your space and provide adequate ventilation.
Unusually narrow construction
If your home meets all three criteria below, you need to provide extra fresh air. See Supply air from outside, page 6.
An unusually tight construction is a construction where:
a. Walls and ceilings exposed to the outside atmosphere shall have a continuous water vapor barrier rated at one perm (6 x 10-11 kg per Pa-s-m2) or less with the openings taped or sealed and
b. Added a weatherstrip on operable windows and doors
c. Caulk or caulk is applied to areas such as joints around window and door frames, between wall-to-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 Determining Type of Heater Location, page 5.
Confined space and non-contained space The National Fuel Gas Code, NFPA 54/ANSI Z223.1 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kW) of total input power at all equipment installed in that space and an uncontained space is defined as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kW) of total input power for all equipment installed in that space. Spaces that communicate directly with the space in which the equipment is installed* through openings that are not provided with doors are considered part of the unenclosed space.

Unvented Natural Gas Vent Free Room Heaters

4 installation instructions and user manual

*Adjacent rooms are communication only if there are odorless passages or ventilation grilles between them.

DETERMINING THE TYPE OF HEATING ROOM:

Use this method to determine if you have limited or unlimited space.

Note: Room includes the room where you install the heater and any adjoining rooms with doorless passageways or air vents between rooms.

1. Find the volume of the room by multiplying the room length x width x height.

Example: Room size 18 feet (length) x 18 feet. (width) x 8ft. (height) = 2592

If additional ventilation of the adjacent room is provided with grilles or openings, then add the volume of these rooms to the total volume of the room.

2. Divide the room volume by 50 cubic feet to determine the maximum BTU/hr the room can support.

Example: 2592 cu.ft. (room volume) / 50 cu.ft. = 51.8 or 51,800 (maximum BTU/hr the room can support)

WARNING: This heater should not be installed in a room or space unless the required volume of indoor combustion air is controlled by the procedure specified in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable procedures provided local codes.

3. Add the Btu/hr of all fuel burning appliances in the room, such as: B. Ventless heater, gas water heater, gas stove, vented gas heater, gas fireplace log and other gas appliances*

*Do not include direct vent gas appliances. Directvent draws in combustion air from the outside and vents it to the outside.

Example: gas water heater

40.000 BTU/h

Ventless heater + 20,000 BTU/hr

In total

= 60.000 BTU/h

4. Compare the maximum Btu/hr the room can support to the actual amount of Btu/hr consumed.

Example: 51,800 Btu/hr (maximum Btu/hr the room can support)

60,000 Btu/hr (Actual Btu/hr Consumed)

The room in the example above is a constrained room because the actual Btu/hr consumed is more than the maximum Btu/hr the room can support.

You need to provide extra fresh air. Your options are as follows:

A. Revise the worksheet and room of an adjacent room. If the additional room provides unrestricted space, remove the door to the adjacent room or add ventilation grilles between rooms. See ventilation air from inside the building (Figure 2).

B. Vent the room directly to the outside. See ventilation air from outside (Figure 3).
C. Install a lower Btu/hr heater if a lower Btu/hr size does not restrict space.
If the actual Btu/hr consumed is less than the maximum Btu/hr the room can support, the room is an unrestricted room. You do not need an additional fresh air supply.
VENTILATION AIR
Ventilation from inside the building
This fresh air would come from an adjacent, non-enclosed room. When ventilating an adjacent, non-enclosed room, you must provide two permanent openings: one within 12″ of the ceiling and one within 12″ of the floor on the wall connecting the two rooms (see options 1 and 2 in Fig. 2). You can also remove the door to the side room (see option 3, fig. 2). Follow National Fuel Gas Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation for the required size of ventilation grilles or ducts.
Figure 2.

Ventilation gills in side room option 1

Or remove the door to the next room option 3

12″
Ventilation gills in the adjoining room - option 2

12″

DEFLATE
DEFLATE
INLET AIR

VENTILATION AIR VENTILATED ATTIC
TO THE LOFT TO CREEP ROOM
VENTILATION CREEPROOM
Figure 3.

5 Unvented space heaters without natural gas venting

Installation Guide and User Guide

WARNING: Revise the worksheet and add the space of the adjacent free space. The combined room must have enough fresh air to supply all equipment in both rooms.
External ventilation Provide additional fresh air when needed by using ventilation grilles or ducts. Connect these items directly to the outdoors or to spaces open to the outside. This includes attics* and crawl spaces. Follow National Fuel Gas Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation for the required size of ventilation grilles or ducts.
*IMPORTANT: Do not provide openings for inflow or outflow into the attic. If the attic has a thermostat controlled electric vent, the heated air entering the attic will activate the electric vent.
IMPORTANT: Non-vented heaters add moisture to the air. While beneficial, installing heating in rooms without proper ventilation can lead to mold growth from excess moisture. See Fresh Air for Combustion and Ventilation, pages 4 through 6.
INSTALLATION
WARNING: Any modification to this heater or its controls could be dangerous.
NOTE: This unit is intended for auxiliary heating. Use this heater in conjunction with your primary heating system. Do not install this heater as the primary heat source. If you have a central heating system, you can run the system's circulation fan while you use the heater. This helps distribute 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 power outage.
WARNING: The heater must be installed by a qualified service technician. Follow all local regulations.
CHECK GAS TYPE Use only natural gas. If your gas supply is not natural gas, do not install a heater. Contact the dealer where you bought the heater to get the right type of heater.
REQUIRES THIS INSTALLATION: Before installing the heater, make sure you have the items listed below:
Piping (check local regulations)
sealant (natural gas resistant)
device shut-off valve*
· Ground joint
test pressure gauge connection*
· Sedimentfalle
· T-connection
· Pipe wrench

*A CSA/AGA certified equipment isolation valve with a 1/8″ NPT stopcock is an acceptable alternative to the test gauge connection. Purchase a CSA/AGA certified appliance isolation valve from your dealer.
PARKING HEATER This heater is intended for wall mounting. The heater can also be sited on a non-combustible floor away from a wall using the floor mounting stands provided with the heater. When installing on combustible floors such as carpets, tiles or other combustible materials other than wooden floors, the heater must be placed on a wooden panel across the full width and depth of the unit.
Install the heater for comfort and efficiency:
· Where there is easy access for operation,
inspection and service
· In the coldest part of the room.
· If you plan to use a fan, place the heater near one
Power outlet.
CAUTION: If installing heater in a home garage: Pilot light and burner must be at least 18 inches off the floor. Position the heater in a place where the moving vehicle cannot hit it.
ATTENTION: This heater produces warm air currents. These flows move heat to the wall surfaces adjacent to the heater. Installing the heater next to vinyl or fabric wall covering or operating the heater where there are airborne contaminants (such as tobacco smoke, scented candles, cleaning fluids, oil or kerosene lamps, etc.) may stain the walls.
WARNING: Never install the heater:
In a bedroom (RD20NGT, RD30NGT, BF20NGT or BF30NGT)
· In a recreational vehicle ·.
· Where curtains, furniture, clothing or other
flammable objects are less than 36 inches from the front, top, or sides of the heater.
· As a fireplace insert
· In high traffic areas
· In windy or drafty areas
WARNING: The heater must be mounted so that the minimum clearances shown in Figure 4 are observed. If possible, ensure greater distances to the floor, ceiling and connecting walls.

Unvented Natural Gas Vent Free Room Heaters

6 Installation Guide and User Guide

10″ (254cm) from the sides

36″ mins. from the ceiling

Left side

right side

Boden
3 minutes. on the surface of carpets, tiles or other combustible materials
Figure 4
MOUNT THE HEATER TO THE WALL
Mounting Bracket The mounting bracket is located on the back of the heater (see Figure 5). It was taped there for shipping. Remove the bracket from the back panel.

Wall Stud Fastening: This method is the best and provides the strongest fastening in timber frame houses.
Wall Anchor Attachment: This allows you to attach the mounting bracket to cavity walls (wall areas between studs) or solid walls (concrete or masonry). Decide which way best suits your needs. Both methods provide a secure hold for the mounting bracket.
1. Stick the bracket to the wall where the heater is to be installed. Make sure the mounting bracket is level. For wall stud mounting, position one end of the mounting bracket over a wall stud.
WARNING: Observe the minimum clearances shown in Figure 7. If possible, provide greater clearances to the floor and to the connecting wall. 2. Mark the screw positions on the wall (see Figure 7). 3. Remove tape and mount bracket from wall.
SEE SPACING SPECIFICATIONS ON PAGE. 3

adjacent wall

16″ (Lg) 12-9/64″ (SM)
Mark the mounting hole locations and drill holes where indicated. Plan minimum distances

18″Min.

mounting bracket

Figure 5
Remove Heater Front Panel 1. Remove a total of (4) screws, there are (2) screws on each side of heater (Figure 6). 2. Pull the front and back panels apart.

(2) screws

(2) screws

Figure 7
Attaching to Wall Studs: Used to attach the mounting bracket to wall studs
1. Drill holes at marked locations with a 9/64″ drill bit.
2. Place the mounting bracket on the wall. Line up the holes on each end of the bracket with the hole drilled in the wall.
3. Insert the mounting screws through the bracket and into the wall studs.
4. Tighten the screws until the mounting bracket is securely attached to the wall studs.

Figure 6 Attaching the mounting bracket to the wall Use holes on each end of the mounting bracket to attach the bracket to the wall. These holes are 16 inches apart. Attach the bracket to the wall in one of the following two ways.
1. Attach to wall studs. 2. Attach to wall anchor
Unvented Natural Gas Vent Free Room Heaters

Fastening to the wall with anchors:

For fastening the mounting bracket to cavity walls (wall areas between studs) or solid walls (concrete or masonry)

Note: Wall anchors, mounting screws and standoffs are included in the hardware package. The hardware package comes with heater.

1. Drill holes at marked locations with a 5/16″ drill bit. For solid walls (concrete or masonry), drill at least 1″ deep.

7

Installation Guide and User Guide

2. Fold the wall anchor as shown in Figure 8 below.
Figure 8. 3. Insert the wall anchor (wings first) into the hole. Beat
anchor flush to the wall. 4. For thin walls (1/2″ or less), insert the red key
wall anchor. 5. Place the mounting bracket on the wall. Relay a message
Holes at each end of bracket with wall anchors. 6. Fastening screws through bracket and poke
in wall anchor. 7. Tighten the screws until the bracket is secure
attached to the wall. Place heater on mounting bracket
1. Locate two horizontal slots on the back of the heater (see Figure 9).
2. Place the heater on the mounting bracket. Slide the horizontal slots onto the protruding tabs on the mounting bracket.

5. Place the heater back onto the mounting bracket.
6. Place spacers between the bottom mounting holes and the anchor or drill hole.
7. Hold the spacer with one hand. With the other hand, insert the mounting screw through the bottom mounting hole and spacer. Insert the tip of the screw into the opening of the dowel or drill hole.
8. Tighten both screws until the heater is firmly attached to the wall. Don't overdo it.
Note: Do not reattach the front panel at this point. Reattach the front panel after making the gas connections and checking for leaks.
FLOOR MOUNTING FAR FROM THE WALL:
Installing the Support Feet (See Figure 11)

Horizontal slots

Figure 11

1. Lay the heater on the back of the table so that the bottom edge extends over the edge of the table.

Mounting bracket mounted on the wall

Figure 9.
Installing the Bottom Mounting Screws 1. Locate two bottom mounting holes. These holes are near the bottom at the back of the heater (see Figure 10).

screw hole

screw hole

2. Securely attach the feet to the bottom of the heater with 2 self-tapping screws each.
Note: The long end of the feet should protrude from the front of the heater and the edge should coincide with the side of the heater. If your feet extend beyond the side of the heater, switch leg positions. 3. Place the heater on a non-combustible surface (see
Locate heater above) before proceeding with gas connection. If it is a permanent location, the heater can be locked in position using anchoring holes in the mounting feet. Note: Use of floor mounting feet requires the use of a 3/8 NPT street elbow to make the gas connection.
CONNECTION TO THE GAS SUPPLY

Figure 10

2. Mark the screw positions on the wall.

3. Remove heater from bracket.

4. When installing the bottom mounting screw into the cavity

or solid wall, mount wall anchors. Follow steps 1

up to 4 under fixing to the wall with anchors.

When installing the bottom mounting screw in the wall

Bolts, drill holes at marked locations with 9/64″

Drill.

Unvented Natural Gas Vent Free Room Heaters

8

WARNING: A qualified service technician must connect the heater to the gas supply. Follow all local regulations. WARNING: This unit requires a 3/8″ NPT (National Pipe Thread) inlet connection to the pressure regulator. Use of floor mounting feet requires use of a 3/8 NPT road elbow to make the gas connection.
Installation Guide and User Guide

CAUTION: Never connect the heater to a private (non-commercial) gas well. This gas is commonly known as wellhead gas.
IMPORTANT: Check the gas line pressure before connecting the heater to the gas line. Gas line pressure must not exceed 14 inches of water. If the pressure in the gas line is higher, the heating controller can be damaged.
CAUTION: Use only new black iron or steel tubing. Internally tinned copper tubing can be used in certain areas. Check your local codes. Use a sufficiently large diameter pipe to bring the correct volume of gas to the heater. If the pipe is too small, excessive pressure loss will occur.
The installation must include an equipment isolation valve, fitting, and plugged 1/8″ NPT stopcock. Locate the NPT tap within reach of the test gauge port. The NPT tap must be upstream of the heating element (see Figure 12).

pressure regulator

HEATER CABINET 3/8″ NPT pipe nipple bottom connection connection nipple

nipple

T connection

Fuel line from the gas meter
(4″W.C to 10.5″ WC pressure)

Nipple 3″ Minimum

shut-off valve

1/8″ NPT-Steckhahn
Check the meter connection
Reducing bushing to 1/8″ NPT
T connection

nipple cap

Sedimentfalle

Figure 12
*A CSA/AGA certified equipment isolation valve with a 1/8″ NPT stopcock is an acceptable alternative to the test gauge connection. Purchase the CSA/AGA Certified Appliance Shutoff Valve from your local dealer. See Accessories, page 17.
IMPORTANT: Install an equipment shut-off valve in an accessible location. The device shut-off valve is used to turn the gas supply to the device on or off.
Lightly apply pipe joint sealant to male threads. This will prevent excess sealant from entering the pipe. Excess sealant in the pipe can result in a clogged heater fuel line.
CAUTION: Use natural gas resistant sealant for pipe connections.
Install the sediment trap in the supply line as shown in Figure 12. Place the sediment catcher where it can be reached for cleaning. A sediment trap captures moisture and contaminants. This keeps them from going into the heater. If the sediment separator is not installed or installed incorrectly, the heater may not run properly.
IMPORTANT: Hold the regulator with a wrench when connecting to gas lines and/or fittings.

CHECK GAS CONNECTIONS
WARNING: After installation or maintenance, check all gas lines and fittings for leaks. Fix all leaks at once.
WARNING: Never use an open flame to check for a gas leak. Apply a mixture of liquid soap and water to all joints. Bubbles that form indicate a leak. Fix all leaks at once.
PRESSURE TEST GAS SUPPLY LINE SYSTEM
Test pressure greater than ½ psig (3.5 kPa)
1. The unit and its main gas valve must be isolated from the gas supply piping system during any pressure test of this system at test pressures greater than ½ psi (3.5 kPa). The device shall be isolated from the gas supply piping system by closing the device isolation valve during each pressure test of the gas supply piping system at test pressures less than or equal to 3.5 kPa (½ psi).2. Plug the open end of the gas line where the unit's shut-off valve was connected.
3. Pressurize the supply piping system either by using compressed air or by opening the main gas valve at or near the gas meter.
4. Check all connections and joints in the gas supply piping system. Apply a mixture of liquid soap and water to the gas fittings. Bubbles that form indicate a leak.
5. Fix all leaks at once.
6. Depressurize and relieve pressure in supply line system.
7. Reconnect the heater and unit shut-off valve to the gas supply.
8. Reconnected fittings must be checked for leaks in the next section.
Test pressure less than or equal to 3.5 kPa (½ psig)
1. Close the device shut-off valve (see Figure 13).
2. Pressurize the supply piping system either by using compressed air or by opening the main gas valve at or near the gas meter.
3. Check all connections from the gas meter to the unit shut-off valve (see Figure 14). Apply a mixture of liquid soap and water to the gas fittings. Bubbles that form indicate a leak.
4. Fix all leaks at once.
5. Depressurize and relieve the supply line system.

9 Unvented space heaters without natural gas venting

Installation Guide and User Guide

Pressure test heater gas connections:
1. Ensure the heater supply piping system is connected and checked for leaks as above.
2. Make sure the heater control knob is in the OFF position.
3. Open the device shut-off valve (see Figure 13).
4. Open the main gas tap on or near the gas meter.
5. Check all connections from the unit shutoff valve to the control valve (see Figure 14). Apply a mixture of liquid soap and water to the gas fittings. Bubbles that form indicate a leak.
6. Fix all leaks at once.
7. Light heater (see Operating Your Heater, pages 10 and 11. Check the remaining internal connections for leaks.
8. Turn off the heater (see Turning off gas to unit, page 11.
9. Reinstall the lower front panel.
Open minded

device shut-off valve

Completed

Caution: Label all cables before disconnecting when servicing controllers. Wiring errors can lead to improper and dangerous operation. Check for proper operation after maintenance.
Figure 15
ELECTRICAL WIRING DIAGRAM: If original wiring supplied with the heater must be replaced, it must be replaced with AWG 105oC or equivalent wiring unless otherwise specified.
WARNING: Electrical Grounding Instructions: This heater is equipped with a three-prong (grounding) plug to protect against electrical shock and should be connected to a properly grounded three-prong outlet.

Figure 13
Control valve

To the gas meter

device shut-off valve

OPERATION OF YOUR HEATING
FOR YOUR SAFETY, READ BEFORE FIRING
WARNING: Failure to follow these instructions exactly could result in a fire or explosion resulting in property damage, personal injury, or death.
A. This appliance has a pilot light that must be ignited by pressing the ignition button. Follow these instructions carefully when lighting the pilot burner.
B. BEFORE IGNITION Smell gas throughout unit. Be careful to smell off the ground as some gases are heavier than air and will settle on the ground.
WHAT TO DO IF YOU SMELL GAS

· Do not attempt to light an appliance.

· Do not touch electrical switches; don't use
every phone in your building.

Figure 14

· Call your gas supplier immediately a
Neighbor's phone. Follow the gas supplier's instructions.

· If you cannot reach your gas supplier, call them
Fire department.
C. Use only your hand to push in or turn the throttle control knob. Never use tools. If the knob will not depress or turn by hand, do not attempt to repair but contact a qualified service technician or gas supplier. Forcible or attempted repairs could result in fire or explosion.

10 Unvented space heaters with no natural gas vent

Installation Guide and User Guide

D. Do not use this device if any part has been submerged. Immediately call a qualified service technician to inspect the unit and replace any parts of the control system that were submerged.

LIGHTING INSTRUCTIONS

1. STOP! Read all safety information included with the heater and located on the side.

2. Turn off all power to the device and make sure the device shut-off valve is fully open.

3. Push in the gas control knob and turn slightly clockwise.

weise

to the OFF position (see Figure 16).

4. Wait five (5) minutes to eliminate any gas. Then smell gas, even near the ground. If you smell gas, STOP! Follow “B” in Safety Information above. If you don't smell gas, continue to the next step.

5. Push the control knob in and turn it counterclockwise

Steer. Press the Control Knob for five (5) seconds.

Note: When starting up the heater for the first time after connecting the gas supply, the control button should be pressed for approx. 30 seconds. This allows air to escape from the gas system. This may take longer on some installations

ignition button

There Control knob

Figure 16.

6. While holding the control button in, press and release the ignition button. This will illuminate the pilot. If necessary, press and hold the ignition button until the pilot light comes on.
7. Press and hold the control knob (30) seconds after igniting the pilot light. Release the control button after 30 seconds.

· If the pilot light does not light up, refer to troubleshooting
See pages 14 and 15. Also contact a qualified service technician from the gas supplier for repairs.

· If the control button does not pop up when you release it,
Contact a qualified service technician or gas supplier for repairs.
8. When the pilot light is lit, turn the control knob

counterclockwise

on heating level. the

Main burner should ignite.

9. To select the desired heat level, turn the temperature adjustment knob counterclockwise between 1 and 5.

THERMOSTAT CONTROL OPERATION
FOR IR20NGT / IR30NGT: The thermostat control used simply turns the burner on and off.
FOR BF20NGT / BF30NGT: The thermostat control used modulates the flame size as the temperature approaches the set point, then turns the burner off when the temperature is reached.
The burner turns on again when the room temperature falls below the set temperature. The control knob can be set to any heating level between 1 and 5. If you choose the HI setting, the burner will remain on.

TO TURN OFF GAS TO UNIT

TURN HEATING OFF

1. Turn the knob clockwise.

to OFF

2. Turn off all power to the device when servicing is required.

3. Turn off the unit's shut-off valve.

BURNER OFF ONLY (PILOT REMAINS ON)

1. Turn the control knob clockwise to the PILOT/IGN position.

to the

CHECK BURNER
Check pilot flame pattern and burner flame pattern frequently.

PILOT FLAME PATTERN
Figure 17 shows a correct pilot flame pattern and an incorrect pilot flame pattern. The incorrect pilot flame pattern does not touch the thermocouple. This cools down the thermocouple. When the thermocouple cools down, the heater is turned off. If the pilot flame pattern is incorrect as shown in Figure 17:

· Turn off the heater (see How to turn off the gas).
device, above.

· See Troubleshooting, pages 14-15.

Correct pilot position.

Wrong pilot position.
Figure 17

11 Unvented space heaters without natural gas venting

Installation Guide and User Guide

CLEANING AND MAINTENANCE
WARNING: Turn off heater and allow to cool before servicing.
CAUTION: Control areas, burners and circulating air passages of the heater must be kept clean. Check these areas of the heater before use. Have the heater checked annually by a qualified service technician. The heater may need to be cleaned more frequently as excess material from carpets, bedding, pet hair, etc.
Make sure the grille guard is in place before operating the heater. If screen or grid guards are removed for maintenance, they must be replaced prior to heater operation.
WARNING: Failure to keep the primary air opening(s) of the burner(s) clean can result in fouling and property damage.
CLEAN ODS/PILOT AND BURNER
· Use as a vacuum cleaner, compressed air or
small brush with soft bristles for cleaning.
CLEANING THE BURNER PILOT AIRPORT INLET
We recommend cleaning the device every 2,500 hours of operation or every three months. We also recommend keeping the burner tube and pilot light assembly clean and free of dust and debris. To clean these parts, we recommend using compressed air of no more than 30 psig.
This can be done with a vacuum cleaner in the blowing position, with compressed air in a can, please follow the instructions on the can. If you don't follow the directions on the can, you could damage the torch or pilot assembly. In addition, the following instructions should also be followed.
1. Turn off the device including the pilot. Allow the device to cool down for at least thirty minutes.
2. Check burner and pilot light for dust and dirt.
3. Blow air through the openings/slots and holes in the burner.
A yellow tip on the pilot light indicates dust and dirt in the pilot light. To clean the pilot assembly, locate the small pilot air inlet hole about two inches from where the pilot flame will come out of the pilot assembly (see Figure 18). With the device turned off, gently blow air through the air intake vent. You can blow through a drinking straw if compressed air is not available.
control air intake hole

CLEANING THE HEATER CABINET Air ducts
· Use a vacuum cleaner or compressed air
sauber
Outside
· Use a soft cloth dampened with a mild soap
and water mix. Wipe the case to remove dust.

Pilot-Montage

Figure 18

12 Unvented space heaters without natural gas venting

Installation Guide and User Guide

TROUBLESHOOTING
NOTE: All troubleshooting items are listed in the order of their operation and likely occurrence.
WARNING: Only a qualified service technician should service and repair the heater.
CAUTION: Never use a wire needle or similar object to clean the ODS/Pilot. This can damage the ODS/Pilot unit. Make sure the grille guard is in place before operating the heater. If screen or grid guards are removed for maintenance, they must be replaced prior to heater operation.

WARNING: If you smell gas:
· Shut off the gas supply. · Do not attempt to light an appliance. · Do not touch electrical switches; Do not use a telephone 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 fire brigade.
IMPORTANT: Operating the heater in an environment with contaminants in the air may generate odors. Cleaning products, paints, paint strippers, cigarette smoke, cements and adhesives, new carpets or fabrics, etc. all produce fumes. These fumes can mix with the combustion air, causing odors and possible staining of walls and ceilings.

OBSERVED SYMPTOM

POSSIBLE CAUSE

When the ignition button is pressed, the 1st ignition electrode is incorrectly positioned.

no spark at the pilot

2. Ignition electrode broken.

3. The ignition electrode is not connected to the igniter.
4. Ignition wire pinched or wet. 5. Defective ignition cable. 6. Bad piezo igniter. 7. Low battery.

REMEDY
1. Reposition electrode 2. Replace electrode 3. Reconnect ignition wire 4. Release ignition wire if pinched
metal or pipe. Keep the ignition wire dry. 5. Replace ignition cable 6. Replace control valve 7. Replace battery

ODS/pilot light illuminates but flame goes out when control knob is released
When the ignition button is pressed, there is a spark at the ODS/Pilot but no ignition

1. Gas shut off or unit shut-off valve closed.
2. Control button not fully depressed when pressing the ignition button.
3. Air in gas line if installed. 4. ODS/Pilot is clogged. 5. Gas regulator setting is incorrect. 6. Control knob not in pilot position. 7. Thermocouple connection loose on
Control valve 8. Pilot flame does not touch thermocouple,
allowing the thermocouple to cool and the pilot flame to go out. This problem can be caused by one or both of the following: a. Low gas pressure b. ODS/Pilot dirty or partially clogged
1. Control button not fully depressed. 2. Control button not pressed long
enough 3. Unit shut-off valve not fully open
4. Damaged thermocouple. 5. Control valve damaged

1. Turn on the gas supply, turn off or open the shut-off valve of the system, closed
2. Fully depress the control knob while pressing the ignition button
3. Keep the control button pressed. Repeat the ignition process until the air is removed.
4. Clean the ODS/Pilot (see Cleaning and maintenance on pages 11 and 12).
5. Replace the gas regulator. 6. Turn the control knob to the pilot position
1. Fully depress the control knob. 2. Maintain control after the ODS/pilot light illuminates
Press and hold button for 30 seconds 3. Open unit shutoff valve fully 4. Hand tighten thermocouple nut until
Tighten firmly, then tighten 1/4 turn more. 5. a. Contact the local gas company b. Clean the ODS/Pilot (see Cleaning and
Maintenance, pages 11 and 12). 6. Replace thermocouple. 7. Replace control valve.

13 Unvented Natural Gas Vent Free Room Heaters

Installation Guide and User Guide

Burner will not ignite after igniting ODS/pilot light
Delayed burner ignition
Burner ignitions during operation
Burner plaque(s) not glowing [Infrared Only] Slight smoke or odor during initial operation

1. Burner orifice clogged 2. Burner orifice diameter too small 3. Gas inlet pressure too low
1. Manifold pressure is too low 2. Burner orifice is clogged
1. Burner orifice clogged or damaged 2. Burner damaged 3. Gas regulator defective
1. Badge damaged 2. Control knob between locked position
gen. 3. Inlet gas pressure is too low. 1. Residues from the manufacturing process

1. Clean burner orifice (see Cleaning and Maintenance on pages 11 and 12) or replace burner orifice
2. Replace the burner nozzle. 3. Contact the local gas company
1. Contact the local gas company. 2. Clean the burner orifice (see Cleaning and
Maintenance on pages 11 and 12) or replace burner tip
1. Clean burner orifice (see Cleaning and Maintenance on pages 11 and 12) or replace burner orifice
2. Replace burner. 3. Replace gas regulator
1. Replace the burner 2. Turn the control knob until it engages
begotten attitude. 3. Replace the gas regulator
1. The problem stops after a few hours of operation

Heater makes a whistling noise when burner is lit
White powder residue builds up in burner housing or on adjacent walls or furniture. Heater produces undesirable odors.

1. Turn control knob to HI position when burner is cold
2. Air in gas line 3. Blocked air passages on heater 4. Burner orifice dirty or partially clogged.
1. When heated, fumes from furniture polish, wax, carpet cleaner, etc. turn into white powdery residue
1. Heater burns fumes from paint, hairspray, glue, etc. See IMPORTANT note above on page 14.
2. Gas leak. See WARNING above on page 14.

1. Turn the control knob to the LO position and allow to warm up for one minute.
2. Operate the torch until the air is purged from the line. Have the gas line checked by a local gas company.
3. Observe the minimum installation clearances (see Figure 4, page 7)
4. Clean burner orifice (see Cleaning and Maintenance on pages 11 and 12) or replace burner orifice.
1. Turn off the heater when using furniture polish, wax, carpet cleaner, or similar products.
1. Air the room. Do not use odor-causing products while the heater is on.
2. Locate and repair any leaks (see Check Gas Connections, page 10)

Heater switches off during operation (ODS running)
Smell of gas even when knob is in OFF position Smell of gas during combustion
The heater will make a clicking/ticking noise shortly after the burner is lit or shut off. Moisture/condensation noticed on the windows

1. Not enough fresh air available 2. Low line pressure 3. ODS/Pilot is partially plugged
1. Gas leak. See WARNING above on page 14.
2. Defective control valve 1. Foreign matter between the control valve
and burner 2. Gas leak. See WARNING below
Top of page 14. 1. Metal expands when heated or con-
Pull on cooling
1. Insufficient combustion/ventilation air

1. Open window and/or door for ventilation
2. Contact the local gas company. 3. Clean ODS/Pilot (see Cleaning and
Maintenance, pages 11 and 12)
1. Locate and repair any leaks (see Check Gas Connections, page 10)
2. Replace control valve
1. Disassemble the gas hose and remove foreign objects
2. Locate and repair any leaks (see Check Gas Connections, page 10)
1. This is common with most heaters. If the noise is excessive, contact a qualified service technician
1. See Fresh Air for Combustion and Ventilation, pages 3 through 5.

14 Unvented space heaters with natural gas venting

Installation Guide and User Guide

This page is intentionally left blank.

15 Unvented space heaters without natural gas venting

Installation Guide and User Guide

PARTS LIST AND DIAGRAM

MODELL: MHVFBF20NGBT / MHVBFD20NGT

ART.-NO

PART DESCRIPTION

QUANTITY ITEM NO

PART DESCRIPTION

quantity

1

80094 Wire Guard

1

16 80081 Thermostatventil

1

2

80096 front panel

1

17 Not applicable

Thermostat Mounting Bracket

1

3

80086 Reflector

1

18 Not applicable

rear heat shield

1

4

80088 Front Heat Shield

1

19 80059 Floor Mounted Feet

1

5

80093 Glas

1

20 80097 rear panel

1

6

80091 glass holder

1

21 80037 Wall Bracket

1

7

80085 Burner Assembly

1

22 80090 Reflector Back Heat Shield

1

8

80057 ODS pilot assembly with thermocouple

1

23 80110 fan unit

1

9

80009 opening

1

24 80049 fan switch

1

10 80074 opening adapter

1

25 80011 Ignition Module Mounting Bracket

1

11 N/A Regulator Mounting Bracket

1

26 80019 ignition pulse

1

12 N/A Control connection

1

27 80014 Zündkabel

1

13 80107 Rules

1

28 Not applicable

Left support of the burner

1

14 70597 3/8″ FTP x 3/8″ MPT Elbow

1

29 80013 High Limit Switch (FAN)

1

15 N/A Right hand burner bracket

1

** 70342 Hardware Kit (not shown)

1

WARNING: Failure to locate parts in accordance with these diagrams or use only parts specifically approved for this heater could result in property damage or personal injury.

23

24

21

22

Blower not included with all
units
29

27 28 7

25 26
17 18
16 10

20 19

6 8
9

11

fifteen

12
13
5 14
4

3

2 1

16 Unvented space heaters with natural gas venting

Installation Guide and User Guide

PARTS LIST AND DIAGRAM

MODEL: MHVFBF30NGBT / MHVFBF30NGT

ART.-NO

PART DESCRIPTION

QUANTITY ITEM NO

PART DESCRIPTION

quantity

1

80041 Wire Guard

1

16 80081 Thermostatventil

1

2

80065 front panel

1

17 Not applicable

Thermostat Mounting Bracket

1

3

80025 Reflector

1

18 Not applicable

rear heat shield

1

4

80029 Heat Shield

1

19 80058 Floor Mounted Feet

1

5

80039 Glas

1

20 80066 rear panel

1

6

80035 glass holder

1

21 80037 Wall Bracket

1

7

80018 burner assembly

1

22 80027 Reflector rear panel

1

8

80057 ODS pilot assembly with thermocouple

1

23 80110 fan unit

1

9

80009 opening

1

24 80049 fan switch

1

10 80073 opening adapter

1

25 80011 Ignition Module Mounting Bracket

1

11 N/A Regulator Mounting Bracket

1

26 80019 ignition pulse

1

12 N/A Control connection

1

27 80014 Zündkabel

1

13 80083 Rules

1

28 Not applicable

Left support of the burner

1

14 70597 3/8″ FTP x 3/8″ MPT Elbow

1

29 80013 High Limit Switch (FAN)

1

15 N/A Right hand burner bracket

1

** 70342 Hardware Kit (not shown)

1

WARNING: Failure to locate parts in accordance with these diagrams or use only parts specifically approved for this heater could result in property damage or personal injury.

BF30TB FROM BF30T FROM

23

24 22

Blower not included with all
units
29

27 28 7

25 26
17 18
16 10

6 8
9

11

fifteen

12
13
5 14
4

3

21
20 19

2 1

17 Unvented space heaters with natural gas venting

Installation Guide and User Guide

PARTS LIST AND DIAGRAM

MODEL: MHVFRD20NGBT / MHVFRD20NGT

ART.-NO

PART DESCRIPTION

QUANTITY ITEM NO

PART DESCRIPTION

quantity

1

80094 Wire Guard

1

14 Not applicable

Thermostat Mounting Bracket

1

2

80096 front panel

1

15 Not applicable

rear heat shield

1

3

80086 Reflector

1

16 80058 Floor Mounting Feet

1

4

80057 ODS assembly with thermocouple (NG)

1

17 80097 rear panel

1

5

80032 ODS bottom bracket

1

18 80037 Wall Bracket

1

6

N/A burner assembly

1

19 Not applicable

Heat Shield Reflector

1

7

70597 3/8″ FTP x 3/8″ MPT Elbow

1

20 80110 fan unit

1

8

80107 Rules

1

21 Not applicable

Mounting bracket for the ignition module

1

9

N/A Control connection

1

22 80019 ignition pulse

1

10 N/A Regulator Bracket

1

23 80014 Zündkabel

1

11 80009 opening

1

24 80013 upper limit switch (fan)

1

12 N/A Bracket Plenum Assembly

1

25 80049 fan switch

1

13 80081 Thermostatventil

1

** 70342 Hardware Kit (not shown)

1

WARNING: Failure to locate parts in accordance with these diagrams or use only parts specifically approved for this heater could result in property damage or personal injury.

25

20

18

19

blower not

included on all

units

21

22

24

23

15 14
13

12

11

10
9
6 8

5

7

17 16

4 3
2
1

18 Unvented space heaters without natural gas venting

Installation Guide and User Guide

PARTS LIST AND DIAGRAM

MODEL: MHVFRD30NGBT / MHVFRD30NGT

ART.-NO

PART DESCRIPTION

QUANTITY ITEM NO

PART DESCRIPTION

quantity

1

80041 Wire Guard

1

14 Not applicable

Thermostat Mounting Bracket

1

2

80065 front panel

1

15 Not applicable

rear heat shield

1

3

80023 Reflector

1

16 80058 Floor Mounting Feet

1

4

80057 ODS assembly with thermocouple (NG)

1

17 Not applicable

back panel

1

5

N/A ODS Tretlager

1

18 80037 Wall Bracket

1

6

80109 Burner Assembly

1

19 Not applicable

Heat Shield Reflector

1

7

70597 3/8″ FTP x 3/8″ MPT Elbow

1

20 80110 fan unit

1

8

80083 Rules

1

21 Not applicable

Mounting bracket for the ignition module

1

9

N/A Control connection

1

22 80019 ignition pulse

1

10 N/A Regulator Bracket

1

23 80014 Zündkabel

1

11 80009 opening

1

24 80013 upper limit switch (fan)

1

12 N/A Bracket Plenum Assembly

1

25 80049 fan switch

1

13 80081 Thermostatventil

1

** 70342 Hardware Kit (not shown)

1

WARNING: Failure to locate parts in accordance with these diagrams or use only parts specifically approved for this heater could result in property damage or personal injury.

Blower not included with all
units
24

25 20
19

21

22

23
6 5

15 14 13 12 11 10 9
8
7

18
17 16

4 3
2
1

19 Unvented space heaters with natural gas venting

Installation Guide and User Guide

OWNER'S MANUAL AND OWNER'S MANUAL
READ INSTRUCTIONS CAREFULLY: Read and follow all instructions. Keep the 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 REPLACEMENT PARTS. USE OF OTHER PARTS MAY RESULT IN INJURY OR DEATH. REPLACEMENT PARTS ARE AVAILABLE ONLY DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED SERVICE MANAGER.
ORDERING INFORMATION FOR SPARE PARTS:
PURCHASING: Accessories can be purchased from any local Mr. Heater dealer or direct from the factory
FOR INFORMATION ABOUT THE SERVICE
Please call toll free 800-251-0001 www.mrheater.com
Our office hours are Monday through Friday from 8:00 a.m. to 5:00 p.m. EST.
Please include the model number, date of purchase and a description of the problem with all communications.
LIMITED WARRANTY
Mr. Heater, Inc. warrants its heaters and accessories to be free from defects in materials and workmanship for a period of 1 year from the date of purchase. Mr. Heater, Inc. will repair or replace this product free of charge if proven defective within the 1 year period and will be returned to Mr. Heater, Inc. at the customer's expense with proof of purchase within the warranty period.
Mr. Heater, Inc. reserves the right to make changes in colors, specifications, accessories, materials and models at any time without notice or obligation.
PRODUCT REGISTRATION: Thank you for your purchase. Please login to http://www.egiregistration.com to register your product.
Mr. Heater, Inc., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 800-251-0001 Mr. Heater is a registered trademark of Mr. Heater, Inc. © 2017, Mr. Heater. All rights reserved

ANSI Z21.11.2 – 2013

20 Unvented space heaters with no natural gas vent

Installation Guide and User Guide

Documents/Resources

references

• Mr. Heater®: Keep warm. Stay comfortable.