UNVENTED (VENT-FREE) GAS FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL Shown with optional cabinet mantel with hearth base and trim accessories. Patent Pending VYGF33PRC and VYGF33NRC Remote-Ready Gas Fireplace Systems 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.
Table of Contents Safety................................................................... 2 Product Identification............................................ 4 Local Codes......................................................... 5 Unpacking............................................................ 5 Product Features.................................................. 5 Air For Combustion And Ventilation...................... 6 Installation............................................................
SAFETY Continued DANGER: Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs, the fireplace may not be working properly. Get fresh air at once! Have fireplace serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol and those at high altitudes.
SAFETY Continued 3. 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 • if you cannot reach your gas supplier, call the fire department 4. This fireplace shall not be installed in a bedroom or bathroom. 5. Do not use this fireplace as a wood-burning fireplace. Use only the logs provided with the fireplace. 6.
Local Codes Install and use fireplace with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code, ANSI Z223.1/NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc. Batterymarch Park Quincy, MA 02269 State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.
Air For Combustion And Ventilation WARNING: This heater shall not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable local codes. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. Today’s homes are built more energy efficient than ever.
AIR FOR COMBUSTION AND VENTILATION Continued 1. Determine the volume of the space (length x width x height). Length x Width x Height =__________cu. ft. (volume of space) Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space) If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space. 2.
AIR FOR COMBUSTION AND VENTILATION Continued Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation for required size of ventilation grills or ducts.
Installation Continued Note: Your fireplace is designed to be used in zero clearance installations. Wall or framing material can be placed directly 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.
Installation Continued 7. Repeat steps 1 through 6, page 9, 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 7). Push trim firmly into place, sliding hanging notches over hanging screws.
Installation Continued 3. Install gas piping to fireplace location. This installation includes an approved flexible gas line (if allowed by local codes) after the equipment shutoff valve. The flexible gas line must be the last item installed on the gas piping. See Installing Gas Piping to Fireplace Location, page 13. 4. Place hearth base accessory against wall at installation location. Cut an access hole in hearth top to run flexible gas line to fireplace (see Figure 9, page 10).
Installation Continued Built-In Fireplace Installation Built-in installation of this fireplace involves installing fireplace into a framed-in enclosure. This makes the front of fireplace flush with wall. If installing a mantel above the fireplace, you must follow the clearances shown in Figure 16, page 13. Follow the instructions below to install the fireplace in this manner. Height Front Width Depth Actual 32 3/8" 34 5/16" 16 11/16" Framing 33" 35 1/2" 17 3/4" 1. Frame in rough opening.
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: If your installation does not meet the minimum clearances shown, you must do one of the following: • raise the mantel to an acceptable height • remove the mantel NOTICE: Surface temperatures of adjacent walls and mantels become hot during operation.
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" of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 17. Pointing the vent down protects it from freezing rain or sleet. CAUTION: Use only new, black iron or steel pipe.
Installation Continued CONNECTING FIREPLACE TO GAS SUPPLY Installation Items Needed • 5/16" hex socket wrench or nut-driver • Phillips screwdriver • sealant (resistant to propane/LP gas, not provided) 1. Remove fireplace screen. Remove two screws that hold fireplace screen in place for shipping. These screws are located near top of screen. Discard screws. Lift fireplace screen up and pull out to remove. 2. Remove screws that attach log base assembly to fireplace.
Installation Continued CAUTION: Make sure external regulator has been installed between propane/LP supply and fireplace. See guidelines under Connecting Fireplace to Gas Supply, page 15. Equipment Shutoff Valve Closed Figure 21 - Equipment Shutoff Valve Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect fireplace with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system.
Installation Continued 5. Correct all leaks at once. 6. Light fireplace (see Operation, page 19. Check all other internal joints for leaks. 7. Turn off fireplace (see To Turn Off Gas to Appliance, page 20). INSTALLING LOGS CAUTION: Do not remove the data plates attached to the heater base assembly. The data plates contain important warranty and safety information.
Installation Continued Mounting Clips Remote Receiver Figure 28 - Installing Remote Receiver Notches Screws for Mounting Screen Figure 26 - Installing Fireplace Screen OPTIONAL Wireless hand-held REMOTE CONTROL Accessories (HRC100 and HRC200) Installing Remote Receiver Unit 1. Disconnect switch wires from the control valve. 2. Remove screws attaching switch plate. 3. Remove switch plate (see Figure 27). Discard after removing. 4. Install remote receiver unit onto gas log heater base using mounting clips.
Installation Continued Installing 9-Volt Battery in Hand-Held Remote Control Unit 1. Remove battery cover on back of remote control unit. 2. Attach terminal wires to the battery. Place battery into the battery housing. 3. Replace battery cover onto remote control unit.
OPERATIon Continued 4. Press in and turn control knob clockwise to the OFF position. 5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information, page 19. If you don’t smell gas, go to the next step. 6. Press in and turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds (see Figure 32).
OPERATIon Continued MANUAL LIGHTING PROCEDURE On/Off Series (Model HRC100) 1. Follow steps 1 through 6 under Lighting Instructions, page 19. 2. Press control knob and light pilot with match. 3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow steps 9 through 11 under Lighting Instructions, page 20. Optional Hand-Held REMOTE OPERATION Note: All remote control accessories must be purchased separately (see Accessories, page 34).
OPERATIon Continued Auto (Thermostatic) Mode 1. Press the POWER and LOCK buttons together to turn on the hand-held remote control. 2. Press AUTO button to select this mode. 3. Set the desired room temperature by pressing the TEMP + or - buttons. 4. Press the POWER and LOCK buttons together to turn off the fireplace Note: Do not leave the hand-held remote in the AUTO mode close to the fireplace. The radiant heat from the fireplace will turn off the fireplace.
Inspecting Burner Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 38 shows a correct pilot flame pattern. Figure 39 shows an incorrect pilot flame pattern. The incorrect pilot flame is not properly heating the thermocouple. When the thermocouple cools, the heater will shut down.
Cleaning and Maintenance WARNING: Turn off fireplace and let cool before cleaning. CAUTION: You must keep control areas, burner and circulating air passageways of fireplace clean. Inspect these areas of fireplace before each use. Have fireplace inspected yearly by a qualified service person. Fireplace may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc.
Troubleshooting WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed, there is no spark at ODS/pilot 1. Ignitor electrode not connected to ignitor cable 2. Ignitor cable pinched or wet 1.
Troubleshooting OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is released Continued POSSIBLE CAUSE 1. Control knob not fully pressed in 2. Control knob not pressed in long enough 3. Equipment shutoff valve not fully open 4. Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This problem could be caused by one or both of the following: A) Low gas pressure B) Dirty or partially clogged ODS/pilot 5.
Troubleshooting Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Moisture/condensation noticed on windows 1. Not enough combustion/ ventilation air 1. Refer to Air for Combustion and Ventilation requirements (page 6) Heater produces a whistling noise when burners are lit 1. Turning control knob to HI position when burners are cold 2. Air in gas line 1. Turn control knob to LO position and let warm up for a minute 2. Operate burners until air is removed from line.
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. • If you cannot reach your gas supplier, call the fire department. IMPORTANT: Operating fireplace where impurities in air exist may create odors.
Wiring Diagram Note: For proper operation of optional accessories, the wires from the switch to the control must be connected exactly as shown. AU TO OF ON F Thermopile Specifications VYGF33NRC • Rating: 20,000/30,000 Btu/Hr • Gas Type: Natural Gas • Ignition: Piezo • Pressure Manifold: 3.5" W.C. • Inlet Gas Pressure (in. of water): Maximum - 10.5" W.C., Minimum* - 5" W.C. • Shipping Weight: 122 lbs.
Parts Models VYGF33PRC and VYGF33NRC (Shown) 1c 1a 2 1b 4 6 3 7 5 8 9 14 4 28 15 10 29 16 22 21 13 25 19 11 17 18 12 20 23 19 24 27 26 30 www.desatech.
Parts 1a 1b 1c 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 PART NO.
PARTS Firebox Models VYGF33PRC and VYGF33NRC 6 1 7 2 4 10 3 9 9 12 14 14 14 9 13 5 14 15 8 16 14 11 32 www.desatech.
PARTS Firebox Models VYGF33PRC and VYGF33NRC This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 29 of this manual. KEY NO. PART NO.
Accessories NOTICE: All accessories may not be available for all fireplace models. Purchase these fireplace accessories from your local dealer. If they can not supply these accessories, call DESA Heating, LLC at 1-866-672-6040 for information. You can also write to the address listed on the back page of this manual. Firebox Perimeter TRIM KITS PT32PB - Polished Brass PT32 - Black PT32P - Platinum PT32B - Brushed Brass For all models. Provides a finished appearance to your fireplace.
Accessories Continued WALL-MOUNT ON/OFF SWITCH GWMS2 For all models. Allows the gas log heater to be turned on and off with a wall switch. fire crackle - CF6-A For all models. Creates the sound of a real burning fire.
Warranty KEEP THIS WARRANTY Model (located on product or identification tag)______________________________ Serial No. (located on product or identification tag)___________________________ Date Purchased ___________________________ Keep receipt for warranty verification.