UNVENTED (VENT-FREE) GAS FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL Shown with optional cabinet mantel, hearth base and trim accessories. EFS33PRB, EFS33NRB, VSGF33PRB AND VSGF33NRB REMOTE-READY 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.
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 information consult a qualified installer, service agency, or the gas supplier. WARNING: 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.
SAFETY INFORMATION WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects, or other reproductive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.
SAFETY INFORMATION Continued 1. 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. 2. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only). 3.
LOCAL CODES SAFETY DEVICE 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 Note: Where listed vented decorative logs are required, thermostat operation is not permitted.
AIR FOR COMBUSTION AND VENTILATION Continued While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper combustion and ventilation. Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances.
AIR FOR COMBUSTION AND VENTILATION Continued Example: 40,000 Gas water heater _____________ Btu/Hr 33,000 Vent-free fireplace _____________ Btu/Hr 73,000 Total _____________ Btu/Hr 4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source. WARNING: A qualified service person must install fireplace. Follow all local codes.
INSTALLATION Trim Hanging Screws Continued ASSEMBLING AND ATTACHING OPTIONAL PERIMETER TRIM (Included with Mantel Accessory) IMPORTANT: If you are recessing the firebox in a wall, do not attach trim at this time. See Built-In Fireplace Installation, pages 11 and 12. Note: The instructions below show assembling and attaching trim to fireplace. 1. Remove packaging from three pieces of trim. 2. Locate four screws, two adjusting plates with set screws, and two shims in the hardware packet. 3.
INSTALLATION Continued 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. Follow the instructions in this section to install the fireplace in this manner. Note: The instructions in this section show installation using the cabinet mantel and the G3333F/G3334U/G3004W/G3335F/G3007U series hearth base accessories.
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. Remove protective material from top of hearth base and from front of fireplace (if any). Note: You can secure fireplace to hearth or floor. Open lower louver. Locate screw holes in bottom of base. Tighten wood screws through these holes and into hearth or floor. 12. Check all gas connections for leaks.
INSTALLATION INSTALLING GAS PIPING TO FIREPLACE LOCATION 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 inches 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 Figure 19 - Removing Log Base Assembly From Fireplace To Fireplace Gas Regulator ➞ 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.
INSTALLATION Continued CHECKING GAS CONNECTIONS WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once. 2.
INSTALLATION Continued 3. Make sure control knob of fireplace is in the OFF position. 4. Check all joints from equipment shutoff valve to gas control valve (see Figures 22 or 23, page 15). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. 5. Correct all leaks at once. 6. Light fireplace (see Operating Fireplace, pages 17 through 20. Check all other internal joints for leaks. 7. Turn off fireplace (see To Turn Off Gas to Appliance, page 18).
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance.
OPERATING FIREPLACE TO TURN OFF GAS TO APPLIANCE Continued 7. With control knob pressed in, press and release ignitor button. This will light pilot. The pilot is attached to the front burner. If needed, keep pressing ignitor button until pilot lights. Note: If pilot does not stay lit, contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure. 8.
OPERATING FIREPLACE Continued Flame Adjustment Knob F T ON LO PILO Selector Switch in Remote Position (Optional HandHeld Remote Control) OF ON OFF REMOTE HI Control Knob in On Position Figure 31 - Setting the Selector Switch, Control Knob, and Flame Adjustment Knob for Hand-Held Remote Operation ON/OFF MODEL GHRCB Hold the control button on the hand-held remote until burner turns on. Hold the control button again until burner turns off (see Figure 32).
OPERATING FIREPLACE INSPECTING BURNERS Continued Check pilot flame pattern and burner flame patterns often. 2. The receiver continuously receives signals from the hand-held remote to control the room temperature. If the hand-held remote is misplaced, obstructed, or for any reason cannot transmit to the receiver, the receiver will shut off the fireplace after 8 minutes.
INSPECTING BURNERS Continued NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by fireplace, causing brief patches of orange flame. Figure 36 shows correct front burner flame pattern. Figure 37 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.
CLEANING AND MAINTENANCE WIRING DIAGRAM Note: For proper operation of optional accessories, the wires from the switch to the control must be connected exactly as shown. Continued 6. In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4, page 21. Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot assembly.
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, 1. Ignitor electrode not con- 1. Reconnect ignitor cable there is no spark at ODS/pilot nected to ignitor cable 2.
TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes out when control knob is released 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 Moisture/condensation noticed on windows 1. Not enough combustion/ven- 1. Refer to Air for Combustion tilation air and Ventilation requirements (page 5) REMEDY Heater produces a whistling noise when burners are lit 1. Turning control knob to HI po- 1. Turn control knob to LO posisition when burners are cold tion and let warm up for a minute 2. Air in gas line 2. Operate burners until air is removed from line.
TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Fireplace produces unwanted odors 1. Heater burning vapors from paint, hair spray, glues, cleaners, chemicals, new carpet, etc. (See IMPORTANT statement on page 25) 2. Low fuel supply (propane/LP only) 3. Gas leak. See Warning statement on page 25 1. Open window to ventilate room. Stop using odor causing products while heater is running 1. Not enough fresh air is available 2. Low line pressure 1.
REPLACEMENT PARTS SERVICE HINTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. When Gas Pressure Is Too Low • pilot will not stay lit • burners will have delayed ignition • heater will not produce specified heat • propane/LP gas supply may be low for propane/LP unit You may feel your gas pressure is too low. If so, contact your local gas supplier. PARTS UNDER WARRANTY Contact authorized dealers of this product.
ILLUSTRATED PARTS BREAKDOWN LOG BASE ASSEMBLY MODELS EFS33NRB, VSGF33NRB, EFS33PRB AND VSGF33PRB 1c 1b 1a 5 3 2 6 11 7 8 6 4 10 9 6 14 24 4 12 18 4 25 26 19 15 27 4 22 4 15 13 11 20 16 23 21 17 28 www.desatech.
PARTS LIST This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 27 of this manual. KEY NO.
ILLUSTRATED PARTS BREAKDOWN FIREPLACE MODELS EFS33NRB, VSGF33NRB, EFS33PRB AND VSGF33PRB 7 17 1 6 9 2 16 12 4 8 3 16 11 11 14 16 16 16 11 15 5 7 16 10 18 16 10 13 30 www.desatech.
PARTS LIST FIREPLACE MODELS EFS33NRB, VSGF33NRB, EFS33PRB AND VSGF33PRB This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 27 of this manual. KEY 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 Products at 1-866-672-6040 for information. You can also write to the address listed on the back page of this manual. CORNER HEARTH BASE G3008F Series - Walnut Finished G3009U Series - Unfinished G3010F Series - Oak Finished For all models.
ACCESSORIES ;;;; QQQQ ;;;; QQQQ ;;;; QQQQ ;;;; QQQQ ;;;; QQQQ Continued ;;;;; QQQQQ ;; QQ QQ ;; ;;;;; QQQQQ ;; QQ Mantel Trim Hearth Base Trim CABINET MANTEL AND FULL HEARTH BASE GMC90F Series - Oak Finished GMC91U Series - Unfinished Birch GMC92F Series - Cherry Finished Birch For all models. Mantel features columns, moldings, fluting and medallion. Tree-sided perimeter trim included.
ACCESSORIES WALL-MOUNT THERMOSTAT SWITCH - GWMT1 (Not Shown) Continued 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. RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL KIT - GHRCTB For all Remote-Ready Models. Allows the gas log heater to be operated in a manually or thermostatically controlled mode.
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WARRANTY INFORMATION KEEP THIS WARRANTY Model ____________________________ Serial No. _________________________ Date Purchased ____________________ Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied.