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NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
OPERATING INSTRUCTIONS AND OWNER'S MANUAL
UNVENTED NATURAL GAS
FIRED ROOM HEATER
Model # MHVFRD20NG
WARNING: If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or loss of life.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
- 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 cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service agency or the gas supplier.
This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is in-
stalled. 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.
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 appli-
ance is not convertible for use with any other gas.
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.
MHVFRD30NG
MHVFRD20NG
www.mrheater.com
MHVFRD30NG
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
800-251-0001
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Summary of Contents for MrHeater MHVFRD20NG
- Page 1 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! OPERATING INSTRUCTIONS AND OWNER’S MANUAL UNVENTED NATURAL GAS FIRED ROOM HEATER Model # MHVFRD20NG MHVFRD30NG MHVFRD20NG MHVFRD30NG INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.
- Page 2 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! WARNING: Due to high temperatures, WARNING: FIRE, EXPLOSION, heater should be kept out of AND ASPHYXIATION HAZARD Do not use a blower insert, traffic and away from furniture Improper installation, heat exchanger insert or other...
- Page 3 In order to provide the best service possible Mr. Heater is now giving you more ways to get in touch with us: Warnings WEBSITE: Mr. Heater’s full line of product are now at: www.mrheater.com FACEBOOK: Find us on Facebook TWITTER: Find us on twitter Specifications YouTube: There are now informational videos on Youtube.
- Page 4 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Product Features Natural Gas: 1. Unusually Tight Construction 2. Unconfined Space Natural gas is odorless. An odor making Control 3.
- Page 5 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! *Adjoining rooms are communication You must provide additional fresh only if there are doorless passageways or air. Your options are as follows: ventilation grills between them.
- Page 6 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! INSTALLATION Fastening Heater to Wall NOTICE: This heater is intended for Mounting Bracket the use as supplemental heat. Use The mounting bracket in located on 10”...
- Page 7 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! 4. If installing bottom mounting screw 3. Insert mounting screws through See clearance bracket and into wall studs. into hollow or solid wall, install wall specs on Pg.
- Page 8 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Connecting to Gas Supply Installation must include an equipment HEATER CABINET shutoff valve, union and plugged 1/8” 3/8” NPT Pipe Nipple Pressure NPT tap.
- Page 9 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Low Pressure • Immediately call you gas supplier from Open a neighbor’s phone. Follow the gas Test Pressure Equal To or Less Than ½ supplier’s instructions.
- Page 10 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! If pilot does not stay lit, refer to it. You will now be able to access all Troubleshooting, pages 11-13. Also, of the internal components of the contact a qualified service person or appliance.
- Page 11 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NOTE: All troubleshooting items are WARNING: If you smell gas: WARNING: Only a qualified service listed in order of operation and likely person should service and repair heater.
- Page 12 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! SYMPTOM • Delayed ignition of burner. CAUSE REMEDY 1. Manifold pressure is too low. 1. Contact local gas company. 2.
- Page 13 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! SYMPTOM • Heater produces unwanted odors. CAUSE REMEDY 1. Heater burning vapors from paint, hair spray, glues, etc. 1. Ventilate room. Stop using odor-causing products while See IMPORTANT statement on page 11.
- Page 14 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Mr. Heater • Unvented Natural Gas Fired Room Heater • Model # MHVFRD20NG Item Part No. Description Item Part No.
- Page 15 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Mr. Heater • Unvented Natural Gas Fired Room Heater • Model # MHVFRD30NG Item Part No. Description Item Part No. Description 80041 Wire Guard...
- Page 16 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! WARRANTY AND PARTS ORDERING UNVENTED NATURAL GAS FIRED ROOM HEATER Model # MHVFRD20NG MHVFRD30NG 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.
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