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MR. HEATER, INC., 4560 W. 160

TH

 ST., CLEVELAND, OHIO 44135 · 800-251-0001

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

 

• 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 fire department.

- Installation and service 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. 

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 qualified installer, service agency, or gas supplier. 

2016 - 70809 - CB

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

UNVENTED LP-GAS FIRED ROOM HEATER

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.

Blue Flame Heaters

MHVFB20TB LP

(BLOWER INCLUDED)

MHVFB20T LP

(BLOWER SOLD SEPARATE)

MHVFB30TB LP

(BLOWER INCLUDED)

MHVFB30T LP

(BLOWER SOLD SEPARATE)

Plaque Heaters 

MHVFR20TB LP

(BLOWER INCLUDED)

MHVFR20T LP

(BLOWER SOLD SEPARATE)

MHVFR30TB LP

(BLOWER INCLUDED)

MHVFR30T LP

(BLOWER SOLD SEPARATE)

Содержание MHVFB20T LP

Страница 1: ...d 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 qualified installer service agency or gas suppl...

Страница 2: ...faces 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 applian...

Страница 3: ... 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 qualified service person should service and repair heater 6 Do not run heater Where flammable liquids or vapors are used or stored During dusty co...

Страница 4: ... excerpts from National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Com bustion and Ventilation All spaces in homes fall into one of the three following ventilation classifications 1 Unusually Tight Construction 2 Unconfined Space 3 Confined Space This heater must not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion a...

Страница 5: ...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 confined space because the actual Btu hr used is more than the maximum Btu hr the space can support You must provide addit...

Страница 6: ... 4 If possible provide greater clearances from the floor ceiling and joining walls WARNING Rework worksheet adding the space of the adjoining unconfined 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 o...

Страница 7: ...r 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 figure 7 If you can provide greater clearances from the floor and joining wall 2 Mark screw locations on wall see figure 7 3 Remove tape and mount bracket from wall Figure 7 Attaching to Wall Stud For attaching mounting br...

Страница 8: ... 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 b...

Страница 9: ...to 14 W C Pressure Tee Joint 1 8 NPT Plug Tap Cap Pipe Nipple Tee Joint 3 8 NPT Pipe Nipple Sediment Trap Test Gauge Connection Reducer Bushing to 1 8 NPT 3 Minimum CAUTION Use pipe joint sealant that is resistant to LP Gas Install sediment trap in supply line as shown in figure 12 Locate sediment trap where it is within reach for cleaning A sediment trap traps moisture and con taminants This keep...

Страница 10: ...T 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 fire department C Use only your hand to push in or turn the gas control knob Never use tools If knob will not 4 Correct al...

Страница 11: ...nt 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 push in or turn by hand don t try to repair it call a qualified service technician or gas supplier Force or attempted repair may result in a fire or explosion D Do no...

Страница 12: ...cuum 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 v...

Страница 13: ...Installation Instructions and Owner s Manual Unvented LP Gas Vent Free Room Heaters 13 This page intentionally left blank ...

Страница 14: ...egulator 6 Turn Control knob to pilot position When ignitor button is pressed in there is a spark at the ODS pilot but no ignition 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 Press in control knob fully 2 After ODS pilot lights keep control knob pressed in for 30 seconds 3 Fu...

Страница 15: ...see Figure 4 page 7 4 Clean burner orifice see Cleaning and Maintenance on pages 11 and 12 or replace burner orifice 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 1 Turn heater off when using furniture polish wax carpet cleaner or similar products Heater produces un...

Страница 16: ...11 1 2 1 4 22 2 33 1 22 1 25 9 5 1 3 1 1 27 1 28 1 4 44 42 45 8 20 10 15 14 42 9 7 26 22 3 22 1 33 1 1 4 3 6 11 45 4 16 2 27 2 28 2 44 13 23 1 2 1 3 5 29 24 1 1 25 22 2 8 20 10 12 17 Blower not included on all units Blower not included on all units MHVFR20TB LP MHVFR20T LP MHVFR30TB LP MHVFR30T LP MHVFB20TB LP MHVFB20T LP MHVFB30TB LP MHVFB30T LP ...

Страница 17: ...28 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 Orifice 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 70358 70358 70358 70358 ODS Pilo...

Страница 18: ... 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 7034...

Страница 19: ...Installation Instructions and Owner s Manual Unvented LP Gas Vent Free Room Heaters 19 This page intentionally left blank ...

Страница 20: ... FOR INFORMATION REGARDING SERVICE Please call Toll Free 800 251 0001 www mrheater com Our office hours are 8 00 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 ...

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