Mr. Heater MHVFBF20 NGT, Operating Instructions And Owner'S Manual

Page 1: ...ectrical 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 w...

Page 2: ...ide poisoning WARNING This appliance is equipped for natural gas Field conversion is not permitted WARNING Do not use any accessory not approved for use with this heater WARNING Any change to this heater or its controls can be dangerous Do not place clothing or other flammable ma terial on or near the appliance Due to high temperatures heater should be kept out of traffic and away from furniture a...

Page 3: ...nters 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 conditions 7 Before using furniture polish wax ca...

Page 4: ...rom National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Combustion 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 pro vided for adequate combustion and ventilat...

Page 5: ...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 additional fresh air Your options...

Page 6: ...ces 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 ap pliance in both spaces Ventilation from Outdoors If necessary provide extra fresh air by using ventila tion grills or ducts Connect these items directly to the outdoors or spaces open to the outdoors These include at...

Page 7: ...evel 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 bracket to wall studs 1 Drill holes at marked locat...

Page 8: ...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 both screws until heater is firmly secured to wall Do not over tighten Note Do not re place front panel at this time Re place front panel after making gas c...

Page 9: ...ure Regulator Heater Cabinet Ground Joint Union Equipment Shutoff Valve From Gas Meter 4 W C to 10 5 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 CHECKING GAS CONNECTIONS WARNING Test all gas piping and connections for leaks after installing or servicing Correct all leaks at once WARNI...

Page 10: ...ld be plugged into a properly grounded three prong receptacle OPERATING YOUR HEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life A This appliance has a pilot which must be lighted by pushing the ignitor button When lighting the pilot follow these instructions exact...

Page 11: ...er for repairs If control knob does not pop up when released contact a qualified service person or gas supplier for repairs 8 When the pilot is lit turn control knob counterclockwise to heating level The main burner should light 9 To select the desired heat level turn the temperature setting knob counterclockwise to between 1 5 THERMOSTAT CONTROL OPERATION FOR IR20NGT IR30NGT The thermostatic cont...

Page 12: ...istled 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 vacuum cleaner in the blow position using comp...

Page 13: ...gas regulator 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...

Page 14: ... ances 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 prod...

Page 15: ...15 Installation Instructions and Owner s Manual Unvented Natural Gas Vent Free Room Heaters This page intentionally left blank ...

Page 16: ...ssembly w Thermocouple 1 23 801 10 Fan Assembly 1 9 80009 Orifice 1 24 80049 Fan Switch 1 10 80074 Orifice Adapter 1 25 8001 1 Ignitor Module Mounting Bracket 1 11 80056 Regulator Mounting Bracket 1 26 80019 Ignitor Pulse 1 12 80021 Regulator Connection 1 27 80014 Ignitor Wire 1 13 80107 Regulator 1 28 80069 Burner Left Bracket 1 14 80079 Gas Input Adapter 1 29 80013 High Limit Switch FAN 1 15 800...

Page 17: ...couple 1 23 801 10 Fan Assembly 1 9 80009 Orifice 1 24 80049 Fan Switch 1 10 80073 Orifice Adapter 1 25 8001 1 Ignitor Module Mounting Bracket 1 11 80055 Regulator Mounting Bracket 1 26 80019 Ignitor Pulse 1 12 80021 Regulator Connection 1 27 80014 Ignitor Wire 1 13 80083 Regulator 1 28 80068 Burner Left Bracket 1 14 80079 Gas Input Adapter 1 29 80013 High Limit Switch FAN 1 15 80069 Burner Right ...

Page 18: ...or 1 7 80079 Gas Input Elbow Adapter 1 20 801 10 Fan Assembly 1 8 80107 Regulator 1 21 8001 1 Ignitor Module Mounting Bracket 1 9 80021 Regulator Connection 1 22 80019 Ignitor Pulse 1 10 80055 Regulator Mounting Bracket 1 23 80014 Ignitor Wire 1 11 80009 Orifice 1 24 80013 High Limit Switch Fan 1 12 80021 Bracket Plenum Assembly 1 25 80049 Fan Switch 1 13 80081 Thermostat Valve 1 70342 Hardware Ki...

Page 19: ...or 1 7 80079 Gas Input Elbow Adapter 1 20 801 10 Fan Assembly 1 8 80083 Regulator 1 21 8001 1 Ignitor Module Mounting Bracket 1 9 80021 Regulator Connection 1 22 80019 Ignitor Pulse 1 10 80055 Regulator Mounting Bracket 1 23 80014 Ignitor Wire 1 11 80009 Orifice 1 24 80013 High Limit Switch Fan 1 12 80033 Bracket Plenum Assembly 1 25 80049 Fan Switch 1 13 80081 Thermostat Valve 1 70342 Hardware Ki...

Page 20: ...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 of purchase Mr Heater Inc will repair or replace this product free of charge if it has been proven to be defective within the 1 year period and is returned at customer expense with proof of purchase to M...