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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 LP-GAS FIRED
ROOM HEATER
Model # MHVFRD20LPBT MHVFBF20LPBT
MHVFRD20LPT
MHVFRD30LPBT MHVFBF30LPBT
MHVFRD30LPT
Plaque Heaters
MHVFRD20LPBT
(Blower Included)
MHVFRD20LPT
(Blower Sold Separate)
MHVFRD30LPBT
(Blower Included)
MHVFRD30LPT
(Blower Sold Separate)
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.
MHVFBF20LPT
MHVFBF30LPT
www.mrheater.com
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
800-251-0001
Blue Flame Heaters
MHVFBF20LPBT
(Blower Included)
MHVFBF20LPT
(Blower Sold Separate)
MHVFBF30LPBT
(Blower Included)
MHVFBF30LPT
(Blower Sold Separate)
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Summary of Contents for MrHeater MHVFRD20LPBT
- Page 1 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! OPERATING INSTRUCTIONS AND OWNER’S MANUAL UNVENTED LP-GAS FIRED ROOM HEATER Model # MHVFRD20LPBT MHVFBF20LPBT MHVFRD20LPT MHVFBF20LPT INSTALLER: Leave this manual with the appliance. MHVFRD30LPBT MHVFBF30LPBT 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 Specifications FACEBOOK: Find us on Facebook TWITTER: Find us on twitter 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! signs, the heater may not be working Product Features Local Codes properly. Get fresh air at once! Have Install and use heater with care. Fan Blower heater serviced.
- Page 5 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! If you home does not meet all of the Example: three criteria above, see Determining the Gas water heater 40,000 Btu/ Type of Heater Location Space below.
- Page 6 • Ground joint union WARNING: Never install the heater: houses. • Test gauge connection* • In a bedroom (MHVFRD20LPBT, • Sediment trap MHVFRD20LPT, MHVFRD30LPBT, • Tee joint CAUTION: If you install the heater MHVFRD30LPT, MHVFBF20LPBT, •...
- Page 7 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Installing Bottom Mounting Screws For attaching mounting bracket to wall See clearance studs: 1. Locate two bottom mounting holes. 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 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 Electrical Wiring Diagram Open Test Pressure Equal To or Less Than ½ If any original wiring as supplied with psig (3.5 kPa) the heater must be replaced, it must be 1.
- Page 10 If you do not smell gas, go to THERMOSTAT CONTROL the next step. OPERATION 5. Turn counterclockwise to PILOT/ FOR MHVFRD20LPBT, IGN, if knob does not turn then MHVFRD20LPT, MHVFRD30LPBT, slightly depress and turn. Once knob MHVFRD30LPT: is in PILOT/ IGN depress for five (5) The thermostatic control simply turns seconds.
- Page 11 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! CLEANING AND MAINTENANCE A yellow tip on the pilot flame indicates Pilot Air Inlet Hole dust and dirt in the pilot assembly. For maintenance of the inside cabinet To clean the pilot assembly find the or to access the burner and pilot...
- Page 12 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 13 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! SYMPTOM • ODS/pilot lights but flame goes out when control knob is released. REMEDY CAUSE 1. Gas supply turned off or equipment shutoff 1.
- Page 14 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! SYMPTOM • Heater produces a whistling noise when burner is lit. REMEDY CAUSE 1. Turning control knob to HI position when burner is cold. 1.
- Page 15 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! SYMPTOM • Gas odor during combustion . CAUSE 1. Foreign matter between control valve and 1. Take apart gas tubing and remove foreign matter . burner.
- Page 16 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Mr. Heater • Unvented Lp-Gas Fired Room Heater • Model # MHVFRD20LPBT, MHVFRD20LPT Item Part No. Description Item Part No.
- Page 17 Fan Assembly (MHVFRD20LPBT ONLY) 80014 Igniter Wire 80049 Fan Switch (MHVFRD20LPBT ONLY) 80081 Thermostat Valve 70342 Hardware Kit (not shown) WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury.
- Page 18 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Mr. Heater • Unvented Lp-Gas Fired Room Heater • Model # MHVFBF20LPBT, MHVFBF20LPT Item Part No. Description Item Part No. Description 80094 Wire Guard...
- Page 19 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! Mr. Heater • Unvented Lp-Gas Fired Room Heater • Model # MHVFBF30LPBT, MHVFBF30LPT Item Part No. Description Item Part No. Description 80041 Wire Guard...
- Page 20 NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! WARRANTY AND PARTS ORDERING UNVENTED LP-GAS FIRED ROOM HEATER Model # MHVFRD20LPBT MHVFBF20LPBT MHVFRD20LPT MHVFBF20LPT MHVFRD30LPBT MHVFBF30LPBT MHVFRD30LPT MHVFBF30LPT WARNING: USE ONLY MANUFACTURER’S REPLACEMENT PARTS.
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