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For more information, visit www.desatech.com

WARNING: If the information in this manual is not fol-

lowed 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 quali

-

fied installer, service agency or the gas supplier.

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

Patent Pending

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LO 

FLAME-MAX

®

 MuLti-SidEd Log dESign

VML27nR And VML27PR

REMotE ContRoL REAdy ModEL 

unVEntEd (VEnt-FREE) gAS Log HEAtER

oWnER’S oPERAtion And inStALLAtion MAnuAL

Also Design-Certified As A Vented Decorative Appliance

Summary of Contents for FLAME-MAX VML27NR

Page 1: ...e any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and...

Page 2: ...RNING This appliance is for installation only in a solid fuel burning mason ry or UL127 factory built fireplace or in a listed vent less firebox enclosure It is design certified for these installation...

Page 3: ...eep this manual for reference It is your guide to safe and proper operation of this heater WARNING Any change to this heater or its controls can be dangerous WARNING Do not use a blower insert heat ex...

Page 4: ...heated the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture safety information Continued 11 Thisheaterneedsfresh outsideairventilationto...

Page 5: ...no outside venting There is no heat loss out a vent or up a chimney Heat is generated by realistic dancing yellow flames This heater is designed for vent free operation with flue damper closed It has...

Page 6: ...Includes the room in which you will install heater plus any adjoining rooms with doorless pas sageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x hei...

Page 7: ...Your options are as follows A Rework worksheet adding the space of an adjoin ingroom Iftheextraspaceprovidesanunconfined space remove door to adjoining room or add ventilation grills between rooms Se...

Page 8: ...oor or wall of fire place If not drafting may cause pilot outage or sooting Use a heat resistant sealant Do not seal chimney flue damper WARNING Never install the heater in a bedroom or bathroom un le...

Page 9: ...REMENTS Log Minimum Firebox Size Height Depth Width 27 17 19 32 MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall Ceiling 27 16 42 Carefully follow the instructions below This wi...

Page 10: ...may need the hood accessory to deflect heat away from your mantel shelf See Figure 5 and 6 and Figure 7 page 9 for minimum clearances IMPORTANT If you cannot meet these minimum clearances you must ope...

Page 11: ...become hot to the touch If installed properly these tem peratures meet the requirement ofthenationalproductstandard Follow all minimum clearances shown in this manual INSTALLATION Continued NOTICE Ify...

Page 12: ...er Damper INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Note When used as a vented heater appliance must be installed only in a solid fuel burning fireplace with a working flue and constructe...

Page 13: ...ill not work properly Installation Items Needed hardware package provided with heater approved flexible gas hose not provided if allowed by local codes sealant resistant to propane LP gas not pro vide...

Page 14: ...lips Bracket Battery Clip 9 Volt Battery Terminal Wires Pad Installing Batteries for Remote Receiver and Hand Held Remote Control Two 9 volt alkaline batteries not included are required to operate thi...

Page 15: ...n Continued For propane LP units the installer must supply an external regulator The external regulator will reduce incoming gas pressure You must reduce incoming gas pressure to between 11 and 14 of...

Page 16: ...r Connecting to Gas Supply page 14 pressure testing gas supply piping system Test Pressures In Excess Of 1 2 PSIG 3 5 kPa 1 Disconnect appliance with its appliance main gas valve control valve and equ...

Page 17: ...es forming show a leak 5 Correct all leaks at once 6 Light heater see Operating Heater page 19 Check all other internal joints for leaks 7 Turn off heater see To Turn Off Gas to Appli ance page 20 INS...

Page 18: ...f base log see Figure 26 6 Place lava rock around base of heater Installation Continued O F F P I L O T O N H I L O O F F P I L O T O N H I L O Figure 22 Installing Bottom Log 1 Bottom Log 1 Burner Gr...

Page 19: ...ualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water lighting instructions WARNING If fireplace has glass d...

Page 20: ...pilot with match see Manual Lighting Procedure on page 21 8 Keep control knob pressed in for30 seconds after lighting pilot After 30 seconds release control knob If control knob does not pop out when...

Page 21: ...ute TurncontrolknobtoONposition Adjust flameadjustmentknobanywherebetweenHIand LO Slide the selector switch to the REMOTE position see Figure 30 Note The burner may light if hand held remote was on wh...

Page 22: ...tigrade the hand held remote control will perform a safetyoverrideandshutthefireplaceoff This feature is not available in the MANU mode 2 The receiver continuously receives signals from the hand held...

Page 23: ...air inlet holes allow the proper amount of air to mix with the gas This provides a clean burning flame Keep these holes clear of dust dirt lint and pet hair Clean these air inlet holes prior to each...

Page 24: ...Warranty Contact authorized dealers of this product If they can t supply original replacement part s call DESA Heating Products Technical Service Department at 1 866 672 6040 When calling DESA Heatin...

Page 25: ...in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is no spark at ODS pilot When igni...

Page 26: ...tter and receiver 1 Contact local natural or pro pane LP gas company 2 Clean burner see Cleaning and Maintenance page 23 or replace burner orifice 1 Clean burner see Cleaning and Maintenance page 23 o...

Page 27: ...n into white powder residue 1 Battery is not installed Bat tery power is low 1 Metal expanding while heat ing or contracting while cooling REMEDY 1 Check burner for dirt and debris If found clean burn...

Page 28: ...statement at top of page 1 Not enough fresh air is avail able 2 Low line pressure 3 ODS pilot is partially clogged 1 Gas leak See Warning statement at top of page 2 Control valve or gas control defec...

Page 29: ...tting can be selected on the wall thermostat and the log heater will automatically cycle from pilot to the heat setting selected WALL MOUNT ON OFF switch GWMS2 Not Shown For all Remote Ready Models Al...

Page 30: ...rated Parts Breakdown Models VML27PR and VML27NR 1 2 27 5 3 4 23 18 17 5 6 12 11 7 7 20 8 8 7 7 13 14 15 19 27 1 27 3 27 4 7 26 27 2 7 16 7 8 8 25 8 9 9 21 22 10 NG Only 24 NG Only O F F P I L O T O N...

Page 31: ...1 Piezo Ignitor 1 14 102334 01 Palnut Fastener 1 15 111022 01 Rear Burner Bracket 1 16 110792 01FB Rear Flat Burner Bracket 1 17 098249 01 ODS Nut 2 18 103778 01 ODS Pilot 1 19 110793 01 Piezo Bracket...

Page 32: ...e installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of nor...

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