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Desa Comfort Glow LFP33NR Owner's Operation And Installation Manual

Unvented (vent-free) natural gas fireplace
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UNVENTED (VENT-FREE)
NATURAL GAS FIREPLACE
OWNER'S OPERATION AND INSTALLATION MANUAL
LFP33NR
REMOTE READY
GAS FIREPLACE
SYSTEM
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 in-
structions.
• 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 appliance may be installed in an aftermarket* manufactured (mobile) home,
where not prohibited by state or local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases.
*
Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
Shown with optional
cabinet mantel and
hearth base.
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 infor-
mation consult a qualified in-
staller, service agency, or the
gas supplier.
WARNING: This is an unvented
gas-fired heater. It uses air (oxy-
gen) from the room in which it is
installed. Provisions for adequate
combustion and ventilation air
must be provided. Refer to Air for
Combustion and Ventilation sec-
tion on page 4 of this manual.

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Summary of Contents for Desa Comfort Glow LFP33NR

  • Page 1 UNVENTED (VENT-FREE) NATURAL GAS FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL LFP33NR REMOTE READY GAS FIREPLACE SYSTEM 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.

  • Page 2: Safety Information

    WARNING: Any change to this fireplace or its controls can be dangerous. LFP33NR This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

  • Page 3: Product Identification

    PRODUCT IDENTIFICATION Control Knobs Piezo Ignitor Remote Selector Switch (Optional) Figure 1 - Log Base Assembly Top Louvered Hood Firebox Support Screen Assembly Figure 2 - Fireplace 104887 OWNER’S MANUAL Log Set Optional Remote Control Top Outer Casing Rear Access Door Bottom Louver Assembly...

  • Page 4: Product Features

    The GA3650T blower op- erates thermostatically. The blower circu- lates heated air from the fireplace into the room. Use of blower is optional. See Acces- sories, pages 24 and 25. LFP33NR AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall...
  • Page 5 AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR FIREPLACE LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install fireplace plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.
  • Page 6 IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermo- stat-controlled power vent. Heated air enter- ing the attic will activate the power vent. LFP33NR Ventilation Grills Into Adjoining Room,...

  • Page 7: Installation

    INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri- mary heating system. Do not in- stall this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater.

  • Page 8: Installation Clearances

    Corner Mantel built-in installation. Floor - 0" 16" Figure 7 - Minimum Clearance to Wall and Ceiling LFP33NR CONVENTIONAL FIREPLACE INSTALLATION Conventional installation of this fireplace involves installing fireplace along with the corner, face, or cabinet mantel with hearth base accessories against a wall in your home.
  • Page 9 INSTALLATION Continued 11. Carefully insert fireplace into cabinet mantel. Be careful not to scratch or damage hearth base, cabinet mantel, or any laminate trim on hearth base. Re- move protective material from top of hearth base and from front of fireplace (if any).
  • Page 10 6" tions off of the facing material. Framing Material Firebox Wire-mesh Screen Figure 15 - Minimum Mantel Clearances for Built-In Installation LFP33NR Mantel Shelf 1 /2 " Noncombustible Material May Project Off this Surface above the Firebox Hood 13" 16" 19" 21"...
  • Page 11 INSTALLATION Continued CONNECTING FIREPLACE TO GAS SUPPLY Installation must include a manual shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from fireplace (see Figure 16). Check your building codes for any special requirements for locating manual shutoff valve to fireplaces.
  • Page 12 Correct all leaks at once. Reconnect fireplace and manual shutoff valve to gas supply. Check reconnected fittings for leaks. LFP33NR Test Pressures Equal To or Less Than 1/2 PSIG Close manual shutoff valve (see Fig- ure 19).
  • Page 13 INSTALLATION Continued INSTALLING LOGS 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. CAUTION: Do not remove the warning and instruction labels attached to the heater base as- sembly.
  • Page 14 Wires Figure 26 - Switch Plate and Wiring Harness Screws Terminal Wires Nuts Remote Receiver Figure 27 - Installing Remote Receiver LFP33NR White Wire From Receiver Valve Red Wire From Receiver Figure 28 - Connecting Wires INSTALLING BATTERIES FOR RM4...
  • Page 15 INSTALLATION Continued OPTIONAL WIRELESS HAND- HELD REMOTE CONTROL ACCESSORY GHRC AND GHRCT SERIES Installing Remote Receiver Unit 1. Disconnect switch wires from the con- trol valve. 2. Remove screws attaching switchplate. 3. Remove switch plate (see Figure 31). Discard after removing. 4.

  • Page 16: Operating Fireplace

    LFP33NR LIGHTING INSTRUCTIONS WARNING: You must operate this heater with the fireplace screen in place.

  • Page 17: To Turn Off Gas To Appliance

    OPERATING FIREPLACE Continued WARNING: Make sure the selector switch is in the OFF po- sition when you are away from home for long periods of time. Heater will come on automati- cally with selector switch in the ON position. Pilot Burner Ignitor Electrode Figure 37 - Pilot TO TURN OFF GAS...

  • Page 18: Inspecting Burners

    If so, turn off heater and let cool. Either remove blockage or replace burner. Blocked burner flame holes will create soot. LFP33NR CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning.

  • Page 19: Troubleshooting

    TROUBLESHOOTING Note: For additional help, visit DESA International’s Technical Service web site at www.desatech.com. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no spark at ODS/pilot When ignitor button is pressed, there is...
  • Page 20 White powder residue forming within burner box or on adjacent walls or furniture Remote does not function LFP33NR POSSIBLE CAUSE 1. Burner orifice clogged 2. Inlet gas pressure is too low 3. Burner orifice diameter is too small 4.
  • Page 21 TROUBLESHOOTING Continued WARNING: If you smell gas • Shut off gas supply. • 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.

  • Page 22: Wiring Diagram

    If so, contact your local natural gas supplier. TECHNICAL SERVICE You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Techni- cal Service Department at 1-800-DESA LOG (1-800-337-2564). You can also visit DESA International’s Technical Service site www.desatech.com.

  • Page 23: Replacement Parts

    This will protect your warranty coverage for parts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA International’s Techni- cal Service Department at 1-800-DESA LOG (1-800-337-2564). When calling DESA International, have ready •...
  • Page 24 Purchase these fireplace accessories from your local dealer or Parts Central (see page 23). If they can not supply these accesso- ries, call DESA International’s Sales De- partment at 1-800-458-2472 for referral in- formation. You can also write to the address listed on the back page of this manual.
  • Page 25 ACCESSORIES Continued MANUAL SHUTOFF VALVE - GA5010 For all models. Manual shutoff valve with 1/8" NPT tap. Fits 1/2" NPT pipe. BLOWER ACCESSORIES - Increase air circulation to maximize heat distribution. GA3650T - T/Stat Blower (for t/stat fireplaces only) Features ON/OFF/AUTO setting. In the auto position, the blower will automatically cycle on and off as needed.

  • Page 26: Illustrated Parts Breakdown

    UNVENTED NATURAL GAS FIREPLACE ILLUSTRATED PARTS BREAKDOWN REMOTE READY MODEL LFP33NR LFP33NR 104887...

  • Page 27: Parts List

    PARTS LIST REMOTE READY MODEL LFP33NR 104887 OWNER’S MANUAL This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PART NUMBER DESCRIPTION 104937-01 Middle Log (#1)
  • Page 28 LFP33NR UNVENTED NATURAL GAS FIREPLACE ILLUSTRATED PARTS BREAKDOWN FIREPLACE LFP33NR 104887...
  • Page 29 PARTS LIST FIREPLACE LFP33NR 104887 This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PART NUMBER DESCRIPTION 101357-01 Top Outer Casing 103207-01 Outer Casing...

  • Page 30: Warranty Information

    COMFORT GLOW VENT-FREE NATURAL GAS FIREPLACE DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.

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