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Save this manual for future reference.

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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.

UNVENTED (VENT-FREE) GAS FIREPLACE

OWNER’S OPERATION AND INSTALLATION MANUAL

Shown with optional cabinet mantel, hearth base and trim accessories. 

Patent Pending

VTGF33NRB AND VTGF33PRB

GAS FIREPLACE WITH TOTAL CONTROL SYSTEM (TCS)

Summary of Contents for VTGF33NRB

Page 1: ...t try to light any appliance Do not touch any electrical switch do not use 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 service must be performed by a quali fied installer service agency or the gas supplier UNVENTED VENT FREE GAS FIREPLACE OWNER S O...

Page 2: ...ng plate This appliance is not convert ible for use with other gases Aftermarket Completion of sale not for purpose of resale from the manufacturer TABLE OF CONTENTS Safety Information 3 Product Identification 4 Local Codes 5 Unpacking 5 Product Features 5 Air for Combustion and Ventilation 5 Installation 8 Operating Fireplace 21 Inspecting Burners 24 Cleaning and Maintenance 25 Specifications 26 Tr...

Page 3: ...ngs Keep 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 Donotuseablow er insert heat exchanger insert orotheraccessorynotapproved for use with this heater WARNING Donotallowfans toblowdirectlyintothefireplace Avoidanydraftsthatalterburner flame patterns Ceiling fans can create drafts th...

Page 4: ...or on adjacent walls or furniture 9 This fireplace needs fresh air ventilation to run properly This fireplace has an Oxygen Deple tion Sensing ODS safety shutoff system The ODS shuts down the fireplace if not enough fresh air is available See Air for Combustion and Ventilation page 5 If fireplace keeps shutting off see Troubleshooting pags 27 10 Do not run fireplace where flammable liquids or vapors are...

Page 5: ...place if there is not enough fresh air PIEZO IGNITION SYSTEM This fireplace has a piezo ignitor This system requires no matches batteries or other sources to light fireplace WIRELESS REMOTE CONTROL This fireplace features an infrared wireless remote control This control system can be used to auto matically light the pilot and adjust the burner flame height at the push of a button WIRED WALL MOUNTED RE...

Page 6: ...er hour 4 8 m3 per kw of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 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 com municating directly with the space in which the appliances are installed through openings not furnished with ...

Page 7: ... ANSIZ223 1 NFPA54Section5 3 or applicable local codes AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining un confined space When ventilating to an adjoining unconfined space you must provide two perma nent openings one within 12 of the ceiling and one within 12 of the floor on the wall connecting the two spaces...

Page 8: ... against any exterior surface on the rear sides or top of your fireplace except where standoff spacers are integrally attached If standoff spacers are attached to your fireplace these spacers can be placed directly against wall or framing materials Use the dimensions shown for rough openings to create the easiest installation see Built In Fire place Installation page 17 IMPORTANT Vent free heaters a...

Page 9: ... gas connections required 7 Firebox installation conventional or built in required 8 Installing perimeter trim optional 9 Installing fireplace hood required 10 Installing logs required 11 Installing fireplace screen required Use the following instructions to complete each step Figure 6 Removing Fireplace Floor Assembly Screw Fireplace Floor Assembly REMOVING FIREPLACE SCREEN AND FLOOR ASSEMBLY NOTIC...

Page 10: ...Note A qualified installer must make all electrical connections RELOCATING WALL SWITCH ASSEMBLY Note The decorative wall switch plate supplied is white The wall switch plate may be painted to match your decor The push button switch and decorative wall plate assembly supplied with your fireplace is pre mounted at the factory in the lower cavity of the fireplace You may relocate this wall switch assemb...

Page 11: ...on without straining cord assembly If you are mounting wall switch assembly to a wall continue reading If you are mounting your wall switch assembly to the side of the mantel see page 12 CAUTION Do not apply ex cessive pull on cord Mounting Wall Switch Assembly to Wall for Recessed Fireplace 7 Create three openings on wall according to Template 1 page 39 This is best done by making a pattern to wo...

Page 12: ...e mantel wall ac cording to Template 2 page 39 This is best done by making a pattern to work with on the mantel Carefully cut page 39 from manual and tape paper template vertically onto mantel wall at preferred location Pierce the paper at the centers of the 2 holes with a nail or sharp pencil leaving a mark on the wall Do the same at centers of the four circles near the corners of the rectangle 8...

Page 13: ... See Accessories page 36 INSTALLATION 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 inches of water If you do not reduce incoming gas pres sure heater regulator damage could occur Install external regulator with the vent pointing down as shown in Figu...

Page 14: ...ed 5 16 hex socket wrench or nut driver Phillips screwdriver sealant resistant to propane LP gas not provided 1 If fireplace screen and floor are still installed see Removing Fireplace Screen and Floor Assembly page 9 2 Route gas line provided by installer from equipment shutoff valve to fireplace Route flexible gas supply line through one of the access holes NOTICE Most building codes do not permit c...

Page 15: ...ropane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air 4 Check all joints of gas supply piping system Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak 5 Correct all leaks at once 6 Reconnect fireplace and equipment shutoff valve to gas supply Check reconnected fittings for leaks Test Pressures Equal To or Less Than...

Page 16: ...rectly on the floor 1 Assemble cabinet mantel hearth base and trim accessories Assembly instructions are included with each accessory 2 When installing blower install a properly grounded 120 volt three prong electrical out let at fireplace location if an outlet is not there If possible locate outlet so cabinet mantel will cover it when installed see Figure 20 3 If not already completed install gas p...

Page 17: ...l the fireplace in this manner Actual Framing Height 32 3 8 33 Front Width 34 5 16 35 1 2 Depth 16 11 16 17 3 4 1 Frameinroughopening Usedimensionsshown in Figure 24 for the rough opening If installing in a corner use dimensions shown in Figure 25 for the rough opening The height is 33 which is the same as the wall opening above 2 Install and properly ground GA3555 three prong 120 volt electrical o...

Page 18: ...Framing Material Figure 26 Attaching Fireplace to Wall Studs Nailing Flanges Nails or Wood Screws INSTALLATION Continued Mantel Clearances for Built In Installation If placing mantel above built in fireplace you must meet minimum clearance between mantel shelf and top of fireplace opening NOTICE Surface temperatures ofadjacentwallsandmantelsbe comehotduringoperation Walls and mantels above the firebo...

Page 19: ...g edges of trim together tighten both set screws on the adjusting plate with slotted screwdriver 7 Repeat steps 1 through 6 for other side 8 Tighten trim hanging screws 10 x 6 25 shoulder into holes in cabinets Place the assembled trim onto fireplace cabinet Align hanging notches on trim with hanging screws on side of fireplace see Figure 29 Push trim firmly into place sliding hanging notches over ha...

Page 20: ...ase over log alignment screws to the left of front burner and behind middle burner Log 1 will sit on top of front and middle burners see Figure 31 2 Place log 2 to right of log 1 and onto log alignment screw as shown in Figure 32 Log 2 will wrap around right end of rear burner 3 Place log 3 on left side of base and onto alignment screw to right of rear burner see Figure 32 Log 3 will wrap around l...

Page 21: ...sonal injury or loss of life A This appliance has a pilot which lights automatically when using the supplied wall switch or remote control If you have a power outage the pilot may be lighted by hand with push button piezo ignitor When lighting the pilot the following warnings must be followed B BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because so...

Page 22: ...erson or gas supplier for repairs Until repairs are made light and operate manually see Manual Lighting Instructions for Electric Power Outage page 19 3 When pilot flame is lit the thermocouple is heated by the flame When thermocouple becomes hot 5 to 15 seconds main burner will automatically light on high flame 4 To lower flame push HI LO button on wall switch once Note This fireplace does not have a ...

Page 23: ...LO Button Piezo Ignitor Wall Switch LED Figure 39 Control Locations Manual Ignition Bypass Switch Down is ON ON OFF Button Magnetic Manual Override Handle Gas Valve Because this fireplace has an electronic ignition system in the event there is a loss of power it will be necessary to manually light the pilot with the piezo ignitor After the pilot is lit the main burner will light automatically 1 Fol...

Page 24: ...eater modulates to the pilot position the blower will continue to run The blower will shut off after the firebox temperature decreases Note It is safe to operate fireplace with blower turned off However the blowerhelps distribute heated air from the fireplace Figure 40 AUTO OFF ON Switch AUTO OFF ON Switch Piezo Ignitor Fan Switch INSPECTING BURNERS Check pilot flame pattern and burner flame pat terns ...

Page 25: ...ualified service person Heater may need more frequent cleaning due to excessive lint fromcarpeting pethair bedding material etc WARNING Failure to keep the primary air opening s of theburner s cleanmayresultin sooting and property damage BURNER INJECTOR HOLDERS AND PILOT AIR INLET HOLES The primary air inlet holes allow the proper amount of air to mix with the gas This provides a clean burning flame...

Page 26: ... cess hole for natural pilot is behind the pilot bracket on the top of burner carriage see Figure 47 You may blow through a drinking straw if compressed air is not available Figure 47 Cleaning Pilot Air Inlet Hole Pilot Air Inlet Hole Pilot Assembly Pilot Bracket CLEANING AND MAINTENANCE Continued Figure 45 Injector Holder On Outlet Burner Tube Rear Burner Figure 46 Injector Holder On Outlet Burne...

Page 27: ...ged OBSERVED PROBLEM When buttons on remote control are pressed there is no response from fireplace When wall switch button is pressed there is no response from fireplace Burner does not light after ODS pilot is lit Delayed ignition burner REMEDY 1 Replace battery in remote control 2 Point remote control toward lower front panel of fireplace when operating 3 Place manual ignition bypass switch in OFF...

Page 28: ...minimum installation clearances see page 8 4 Clean burner see Cleaning and Maintenance page 25 or replace burner orifice 1 Reconnect ignitor cable 2 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 3 Tighten nut holding piezo ignitor to base panel of log set Nut is located behind base panel 4 Replace ignitor cable 5 Replace piezo ignitor 6 Replace pilot assembly 7 Replace...

Page 29: ... A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 25 or replace ODS pilot assembly 5 Hand tighten until snug then tighten 1 4 turn more 6 Replace pilot assembly 7 Replace control valve TROUBLESHOOTING Continued POSSIBLE CAUSE 1 Gas supply turned off or equipment shutoff valve closed 2 Control knob not in PILOT position 3 Air in gas lines when in...

Page 30: ...d service person 1 Open window and ventilate room Stop using odor caus ing products while fireplace is running 2 Locate and correct all leaks see Checking Gas Connec tions page 15 1 Open window and or door for ventilation 2 Contact local gas company 3 CleanODS pilot seeCleaning and Maintenance page 25 1 Locate and correct all leaks see Checking Gas Connec tions page 15 2 Replace control valve 1 Tak...

Page 31: ...ginal replacement part s call DESA Heating Productsʼ Technical Service Department at 1 866 672 6040 When calling DESA Heating Products have ready your name your address model and serial numbers of your fireplace how fireplace was malfunctioning type of gas used propane LP or natural gas purchase date Usually we will ask you to return the part to the factory PARTS NOT UNDER WARRANTY Contact authorize...

Page 32: ...www desatech com 113134 01B 32 ILLUSTRATED PARTS BREAKDOWN REMOTE CONTROL LOG BASE ASSEMBLY MODELS VTGF33PRB AND VTGF33NRB SHOWN 60 59 ...

Page 33: ...ndle 1 39 110108 01 Burner Shield 1 40 098544 01 Wire Support Clip 1 41 101629 01 1 5 Bushing 2 PARTS LIST REMOTE CONTROL LOG BASE ASSEMBLY MODELS VTGF33PRB AND VTGF33NRB This list contains replaceable parts used in your fireplace When ordering parts follow the instructions listed under Replacement Parts on page 31 of this manual KEY PART NO NUMBER DESCRIPTION QTY Not a field replacement part 42 104...

Page 34: ...www desatech com 113134 01B 34 ILLUSTRATED PARTS BREAKDOWN FIREPLACE MODELS VTGF33NRB AND VTGF33PRB 23 24 5 4 11 19 12 9 14 9 21 9 9 20 10 2 3 1 13 22 8 7 10 15 15 16 17 18 18 6 ...

Page 35: ... Firebox Hood 1 7 102759 02CK Left Front Side 1 8 102758 02CK Right Front Side 1 9 M11084 26 Hex Screw 10 60 10 099230 01 Shoulder Screw 4 11 Firebox Wrapper 1 12 101514 01 Cover 1 13 098304 01 Phillips Pan Head Screw 10 22 14 101348 01 Firebox Support 2 15 102455 18 Louver 2 16 104313 01 Hinge Pin 1 17 104313 02 Hinge Pin 1 18 M10908 2 Screw Slotted Hex Head Tapping 4 19 098304 02 Phillips Pan He...

Page 36: ... fluting and medallion Three sided perimeter trim kit included Dimensions H xW xD 48 3 4 x 60 7 8 x 34 3 4 CORNER HEARTH BASE G3008F Series Walnut Finished G3009U Series Unfinished G3010F Series Oak Finished For all models The corner hearth base is designed for use with the corner mantels to create a hand some riser for the fireplace Dimensions WxHxD 6 x 52 1 2 x 23 3 4 CABINET MANTEL GMC11F Series W...

Page 37: ...may also email your request to productsupport desaint com FIRE CRACKLE CF6 A Not Shown Creates the sound of a real burning fire LAMINATE TRIM FOR HEARTH OR MANTEL G3002J Series Jade Marble Laminate Mantel Trim G3003J Series Jade Marble Laminate Hearth Base Trim G3002S Series Sandstone Marble Laminate Mantel Trim G3003S Series Sandstone Marble Laminate Hearth Base Trim G3002B Series Black Onyx Marbl...

Page 38: ...L MOUNT THERMOSTAT SWITCH GWMT1 Not Shown For all models The desired comfort setting can be selected on the wall thermostat and the fireplace will automatically cycle from pilot to the heat setting selected WALL MOUNT ON OFF SWITCH GWMS2 Not Shown For all models Allows the gas fireplace to be turned on and off with a wall switch CLEANING KIT GCK Not Shown For all models Your vent free gas appliance ...

Page 39: ... 01B 39 Template 1 Relocating Wall Switch to Hollow Room Wall Template 2 Relocating Wall Switch to Side Wall of Mantel CUT HERE TEMPLATES 4 3 4 4 3 4 3 3 4 3 8 3 3 4 3 8 3 16 3 4 3 4 3 8 Diameter 2 Holes 1 8 Diameter 2 Holes ...

Page 40: ...www desatech com 113134 01B 40 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 41: ...ion the wires must be connected exactly as shown in wiring diagram MODULE SENSOR RECEIVER INDICATION BOARD PIEZO MANUAL OVERRIDE SWITCH VALVE PILOT IGNITOR ELECTRODE IGNITOR POWER CORD FAN SWITCH 3 2 1 BLOWER BLUE RED WHITE BROWN GREEN YELLOW BLUE BLACK WHITE GREEN C D ...

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Page 44: ...stalled 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 normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transportation and ...

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