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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 page 

10. 

READ AND SAVE THESE INSTRUCTIONS

VENT-FREE FIREPLACE 

SYSTEMS

INSTALLATION AND OPERATING 

INSTRUCTIONS

MODELS:

32VFHNVC, 32VFHPVC 
36VFHNVC, 36VFHPVC 
42VFHNVC, 42VFHPVC

WARNINGS

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.

WARNINGS

Summary of Contents for 32VFHNVC

Page 1: ...y 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 applian...

Page 2: ...g the Gas 17 Checking Gas Pressure 18 Milli Volt Control 18 Electrical Wiring Milli Volt 19 Connecting Optional Wall Switch 19 Connecting Remote Receiver 20 Checking System Operation 20 Log Placement...

Page 3: ...installing or trying to operate this vent free gas heater IMPORTANT SAFETY INFORMATION 1 Due to high temperatures the appliance should be located out of traffic and away from furniture and draperies...

Page 4: ...w odors to dissipate Any odors remaining after this initial break in period will be slight and will disappear with continued use 20 Input ratings are shown in BTU per hour and are for elevations up to...

Page 5: ...on the optional fireplace hearth Operation This unvented gas heater requires no outside venting and burns cleanly with high heating efficiency This zero clearance unvented gas heater can be installed...

Page 6: ...ssure to a maximum of 13 w c Milli Volt Pressure Regulator Pressure Setting 10 w c Gas Inlet Pressure Max 13 w c Min 11 w c Gas Rate Model Number Control Max BTU Hr Min BTU Hr 32VFHNVC MILLI VOLT 38 0...

Page 7: ...tion to control flame height heat output Both front and rear burners are in operation to provide realistic glow and yellow flame Pilot The gas log heater is fitted with a specially designed safety pil...

Page 8: ...re Hand held thermostat remote with receiver Gloves are recommended when handling ceramic fiber logs to prevent skin irritation from loose fibers Logs are fragile handle with care WARNING Carefully in...

Page 9: ...e unit 3 Field wire main power supply to units with fan kit Refer to the Electrical Section found in this manual Electrical connections should only be performed by an experienced licensed certified tr...

Page 10: ...n 50 cubic feet per 1 000 BTU per hour 4 8 m3 per kw of the aggregate input rating of all appliances installed in that space Rooms communicating directly with the space in which the appliances are ins...

Page 11: ...ld be based only on the room with the heater 151 2 x 12 x 8 50 GENERAL INSTALLATION INFORMATION Figure 3 Example of a Large Room with 1 2 Wall Divider Counter Fireplace x 1000 x 1000 52800 BTU Hr x 10...

Page 12: ...cribed in the previous section 2 Align the canopy with the holes in the top frame See Figure 5 3 Install and tighten side screws 4 Make sure the canopy is level and secure Install the fireplace screen...

Page 13: ...air furnaces air conditioners windows or doors Installation must provide adequate ventilation and combustion air DO NOT INSTALL THIS MODEL IN A BEDROOM OR BATHROOM Location should be out of high traf...

Page 14: ...t the hearth or a minimum 22 GA 0 030 metal or a minimum 1 2 wooden base covering the entire width and depth of the base Combustible material must be installed at least one inch away from the front fa...

Page 15: ...or other hard surfaces Be sure fireplace rests on a solid continuous floor or platform with appropriate framing for support and so that no cold air can enter from under the firebox Anchor fireplace to...

Page 16: ...framing members using 8d nails or other suitable fasteners Refer to Figure 14 5 The canopy must be installed for safe operation of the heater Refer to page 12 for canopy installation details When fin...

Page 17: ...at the Pressure Tapping Point May Be Installed Check gas type The gas supply must be the same as stated on the heater s rating plate If the gas supply is different DO NOT INSTALL THE HEATER Contact yo...

Page 18: ...aptured screw clockwise firmly to re seal Do not over torque Check for gas leaks Figure 16 Pressure Test Point Location Milli Volt Control When tightening up the joint to the valve hold the valve secu...

Page 19: ...ect one wire to TP TH and one wire to TH or connect the wall switch thermostat to the two male 0 25 terminals on the left side of the unit The color of the wires does not matter Figure 17 Wiring Diagr...

Page 20: ...OSTAT READING TEST TEST TERMINALS CONTACTS SHOULD BE A COMPLETE 2 3 CLOSED CLOSED SYSTEM B THERMOPILE 1 2 OPEN OPEN OUTPUT Checking System Operation The milli volt system and individual com ponents ma...

Page 21: ...operty damage or personal injury LOG PLACEMENT Before you begin This unit is supplied with six 6 ceramic fiber logs Do not handle these logs with your bare hands Always wear gloves to prevent skin irr...

Page 22: ...ase Log 3 Pins Figure 22 Installing Right Top Log 4 Right top log 4 Pins 4 Place right top log 4 on two pins located to the left of right base log See Figure 22 3 Place left base log 3 on two pins on...

Page 23: ...eft Top Log 5 5 Place right end of left top log 5 on bottom center grate pin Place middle of left top log 5 on pin just to the right of the left base log Rest the left end of left top log 5 on the lef...

Page 24: ...ime size pieces evenly across the burner surface in between the logs Do not add additional Rock Wool See Figure 26 Wash hands after placing Rock Wool Itching may occur Figure 26 Placing Rock Wool Dime...

Page 25: ...heater is in operation It should just touch the top of the thermo couple tip for natural See Figure 27 for correct pilot flame If the pilot flame does not touch the thermocouple then the main burner...

Page 26: ...served Figure 29 Correct Appearance of Rear Flames of Blazing Oak Burner will have a random pattern of yellow flames as shown in Figure 29 There should be glowing embers on the front burner Note The f...

Page 27: ...ow the gas supplier s instructions If you cannot 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 the knob will not push...

Page 28: ...the gas piping 7 With the control knob pushed in push in and release the piezo ignitor button to light the pilot 8 Continue pushing the control knob in for a further 60 seconds to prevent the flame d...

Page 29: ...ailure to keep air intake holes clean will result in sooting and poor combustion Inspect and clean all burner ports Inspect ODS pilot for operation and accumulation of lint at air intake holes Verify...

Page 30: ...prior to the installation of the unvented heater The electrical connections must be made before the firebox is framed and enclosed in the finished walls optional Trim Optional brass or pewter trim kit...

Page 31: ...roved with this appliance may result in property damage or personal injury WARNING BLAZING OAK LOGS Item Description Qty BOCL18 BOCL24 BOCL30 1 Right Base Log 1 70D0131 70D0041 70D0231 2 Rear Log 1 70...

Page 32: ...10 1 2 7 illustrated parts breakdown 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 o...

Page 33: ...D0473 14D0477 7 On Off Switch 1 32D0232 32D0232 8 Pilot Regulator 1 14D0469 9 Hi Lo Knob 1 37D0011 37D0011 10 Pilot On Off Knob 1 37D0010 37D0010 11 Control panel 1 54D0233 54D0233 Description Part Nu...

Page 34: ...eakdown Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or personal injury WARNING...

Page 35: ...L42BRM 3 Pewter Louver Kit 1 L32PWM L36PWM L42PWM 3 Black Louver 8 26D0695 26D0697 26D0699 7 Blower with Rheostat 1 BLOTMC BLOTMC BLOTMC Accessories 4 Curved Design Brass Trim 1 BRTK32C BRTK36C BRTK42...

Page 36: ...tor 2 Replace ignitor 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing 5 Replace ignitor cable 6 Replace piezo ignitor 1 Ventilate room Stop using odor causing products...

Page 37: ...as line 3 Dirty or partially clogged burner orifices 1 LP regulator shut down due to inlet pressure too high REMEDY 1 Press in control knob fully 2 After ODS pilot lights keep control knob pressed in...

Page 38: ...piece will be held in place by the side pieces See Figure 34 Figure 33 Figure 34 4 Loosely install four supplied screws into left and right sides of unit face Leave approximately 1 8th in of screw sha...

Page 39: ...ft and right corners Tilt trim kit away from you and into place snugly against unit Tighten screws installed in step 4 Figure 36 Figure 37 Figure 38 7 Secure the top trim piece to unit by installing s...

Page 40: ...arage space 5 Locate air supply inlet at least 3 away from any appliance vent terminal 6 Avoid extremely long runs and numerous turns in the duct leading from the fireplace to the combustion air assem...

Page 41: ...ing collar with duct clamp or screws See Figure 45 DO NOT remove the cover if the outside air will not be connected WARNING Figure 44 Attaching Outside Air Starting Collar and Insulation Ring to Left...

Page 42: ...ote If the wall covering is brick or stone use appropriate masonry fasteners If necessary splice the duct Use a model 403 duct connector to splice duct sections Installing model 403 duct connector 1 P...

Page 43: ...ed Lifetime Warranty will also be void if the appliance is not operated and maintained according to the operating instructions supplied with the appliance and does not extend to 1 firebox burner assem...

Page 44: ...AUGUST 2008 71D0533 Rev 4 MHSC 149 Cleveland Drive Paris Kentucky 40361 www mhsc com...

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