MrHeater MHVFRD20NG Operating Instructions And Owner'S Manual Download Page 2

2

Mr. Heater | Unvented Natural Gas Fired Room Heater

Operating Instructions and Owner’s Manual

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

WARNING:

  

Do not use a blower insert, 

heat exchanger insert or other 

accessory not approved for use 

with this heater.

Due to high temperatures, 
heater should be kept out of 
traffic and away from furniture 
and draperies. 
Do not place clothing or other 
flammable material on or near 
the appliance.
Children and adults should be 
alerted to the hazard of high 
surface temperature and should 
stay away to avoid burns or 
clothing ignition.
Young children should be 
carefully supervised when they 
are in the same room with 
heater. 
If the barrier becomes damaged, 
the barrier shall be replaced with 
the manufacturer’s barrier for 
this appliance.
Any safety screen or guard 
removed for servicing an 
appliance must be replaced prior 
to operating the heater.
Installation and repair should 
be done by a qualified service 
person. The appliance should be 
inspected before use and at least 
annually by a professional service 
person. More frequent cleaning 
may be required due to excessive 
lint from carpeting, bedding 
material, etc. It is imperative that 
control compartments, burners, 
and circulating air passageways 
of the appliance be kept clean.

WARNING:

  

This appliance is equipped for 

Natural Gas. Field conversion is 

not permitted.

WARNING:

 

THIS PRODUCT CAN EXPOSE 

YOU TO CHEMICALS INCLUDING 

LEAD AND LEAD COMPOUNDS, 

WHICH ARE KNOWN TO 

THE STATE OF CALIFORNIA 

TO CAUSE CANCER AND 

BIRTH DEFECTS OR OTHER 

REPRODUCTIVE HARM. FOR 

MORE INFORMATION GO TO 

WWW.P65WARNINGS.CA.GOV

W

ARNINGS

WARNING: FIRE, EXPLOSION, 

AND ASPHYXIATION HAZARD 

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. 

Read and follow instructions 

and precautions in User’s 

Information Manual provided 

with this heater.

Summary of Contents for MHVFRD20NG

Page 1: ...r 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 phon...

Page 2: ...erating the heater Installation and repair should be done by a qualified service person The appliance should be inspected before use and at least annually by a professional service person More frequen...

Page 3: ...air If heater keeps shutting off it requires servicing 5 Turn off and let cool before servicing Only a qualified service person should service and repair heater 6 Do not run heater Where flammable liq...

Page 4: ...plied 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 Establishing Adequate V...

Page 5: ...ect vent 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 spa...

Page 6: ...to Natural Gas Equipment shutoff valve Ground joint union Test gauge connection Sediment trap Tee joint Pipe wrench A CSA AGA certified equipment shutoff valve with 1 8 NPT tap is an acceptable altern...

Page 7: ...of heater See Figure 9 2 Place heater onto mounting bracket Slide horizontal slots onto stand out tabs on mounting bracket Installing Bottom Mounting Screws 1 Locate two bottom mounting holes These ho...

Page 8: ...odes WARNING This appliance requires a 3 8 NPT National Pipe Thread inlet connection to the pressure regulator Use of floor mounting feet will require you to use a 3 8 NPT street elbow to make gas con...

Page 9: ...one in your building Figure 13 Figure 14 Equipment Shutoff Valve Open Closed To gas meter Control Valve Equipment Shutoff Valve Immediately call you gas supplier from a neighbor s phone Follow the gas...

Page 10: ...gandproperty damage WARNING Turn off heater and let cool before servicing CAUTION You must keep control areas burner and circulation air passageways of heater clean Inspect these areas of heater befor...

Page 11: ...company b Clean ODS pilot see Cleaning and Maintenance page 10 9 Thermocouple damaged 9 Replace thermocouple 10 Control Valve damaged 10 Replace control valve REMEDY SYMPTOM Burner does not light afte...

Page 12: ...ice is clogged 2 Clean burner orifice see Cleaning and Maintenance on page 10 or replace burner orifice 1 When heated vapors from furniture polish wax carpet cleaners etc turn into white powder residu...

Page 13: ...nd remove foreign matter 2 Gas leak See WARNING statement at top of page 11 2 Locate and correct all leaks see Checking Gas Connections page 8 REMEDY SYMPTOM SYMPTOM Heater shuts off in use ODS operat...

Page 14: ...Regulator Mounting Bracket 1 9 80009 06 Orifice 1 10 80172 Selector Valve Adapter 2 11 80173 Aluminum Valve 1 12 80171 Valve Bracket 1 Item Part No Description 13 80058 Floor Mounting Feet Beige 1 802...

Page 15: ...Front Panel Beige 1 80208 Front Panel White 1 3 80023 Reflector 1 4 80057 ODS Assembly w Thermocouple NG 1 5 80109 Burner Assembly 1 6 80082 Regulator 1 7 NA Regulator Connection 1 8 80055 Regulator M...

Page 16: ...M 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...

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