UNVENTED (VENT-FREE) GAS COMPACT CLASSIC HEARTH® FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL For more information, visit www.desatech.com Thermostat Models: VMH10TPB, VMH10TNB, EFS10TP and EFS10TN Remote-Ready Models: VMH26PRA, VMH26NRA, EFS26PR, and EFS26NR Shown with Optional Cabinet Mantel/Hearth Base Accessory 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.
TABLE OF CONTENTS SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ............................................................ 2 CLEANING AND MAINTENANCE ............................................ 29 PRODUCT IDENTIFICATION ..................................................... 3 WIRING DIAGRAM ................................................................... 29 OPTIONAL REMOTE CONTROL ACCESSORIES .................... 4 TROUBLESHOOTING .....................................................
SAFETY INFORMATION PRODUCT IDENTIFICATION 3 3 SAFETY INFORMATION Continued Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 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. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors.
OPTIONAL REMOTE CONTROL ACCESSORIES LOCAL CODES PRODUCT FEATURES UNPACKING OPTIONAL REMOTE CONTROL ACCESSORIES UNPACKING 1. (For Remote-Ready Models Only) There are four optional remote controls that can be purchased separately for Remote-Ready Models only: • wall switch • hand-held ON/OFF remote • wall thermostat • hand-held thermostat remote See Accessories, pages 38 and 39. LOCAL CODES Install and use fireplace with care. Follow all local codes.
ASSEMBLY Assembling Fireplace 5 5 ASSEMBLY 4. WARNING: Always have branch support and screen in place before operating fireplace. This prevents excessive temperatures on fireplace surfaces. WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this fireplace may result in property damage or personal injury. ASSEMBLING FIREPLACE Tools Required: • Phillips screwdriver • 5/16" hex wrench • slotted screwdriver • scissors 1.
AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation Determining Fresh-Air Flow for Fireplace Location AIR FOR COMBUSTION AND VENTILATION WARNING: This fireplace shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. c.
AIR FOR COMBUSTION AND VENTILATION Determining Fresh-Air Flow for Fireplace Location (Cont.) Ventilation Air 7 7 AIR FOR COMBUSTION AND VENTILATION Continued 3. Add the Btu/Hr of all fuel burning appliances in the space.
AIR FOR COMBUSTION AND VENTILATION INSTALLATION Ventilation Air (Cont.) INSTALLATION 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.
INSTALLATION Check Gas Type Installation Items Fireplace Clearances 9 9 INSTALLATION Continued Use the dimensions shown for rough openings to create the easiest installation (see Built-In Fireplace Installation, page 10). CHECK GAS TYPE Use the correct gas type (natural or propane/LP) for your unit. If your gas supply is not correct, do not install fireplace. Call dealer where you bought fireplace for proper type fireplace.
INSTALLATION Built-In Fireplace Installation INSTALLATION Continued BUILT-IN FIREPLACE INSTALLATION WARNING: If pre-wiring, do not connect wiring to any electrical source at this time. Install fireplace electrical outlet and connect wiring to outlet before connecting to electrical source. The fireplace electrical outlet is included with the GA3450T blower accessory. Only use the fireplace electrical outlet supplied with the GA3450T blower accessory.
INSTALLATION Built-In Fireplace Installation (Cont.) Optional Mantel Installation 11 11 INSTALLATION Continued WARNING: Do not allow any combustible materials to overlap the firebox front facing. IMPORTANT: Noncombustible materials such as brick, tile, etc. may overlap the front facing, but should never cover any necessary openings like louvered slots.
INSTALLATION Optional Mantel Installation (Cont.) Installing Blower Accessory GA3450T in Remote-Ready Models INSTALLATION Continued 10. Attach wood base to floor with two 1 3/4" black screws provided (see Figure 13). If the floor is concrete use anchor method (see Attaching Wood Base to Solid Floor, page 17). 11. Install gas line. See Connecting To Gas Supply, pages 17 and 18. 12. Check for leaks. See Checking Gas Connections, page 19. 13. Place mantel around fireplace.
INSTALLATION Installing Blower Accessory GA3450T in Remote-Ready Models (Cont.) 13 13 INSTALLATION Continued Installing Blower Accessory 5. CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. 6. CAUTION: Verify proper operation after servicing. 7. Note: If you are using a mantel with your fireplace, use the following instructions. If your fireplace is built-in, see For Built-In Installation, page 14. 1.
INSTALLATION Installing Blower Accessory GA3450T in Remote-Ready Models (Cont.) Installing Blower Accessory GA3450T in Thermostat-Controlled Models INSTALLATION Continued For Built-In Installation 5. 6. WARNING: A licensed electrician must connect the wiring harness to electrical supply following all local codes. Electrician must provide a clamp on the box cover to secure the wiring. Wiring should be routed through the bushing in the hole on the outer casing of fireplace. 1. 2. 3. 4.
INSTALLATION Installing Blower Accessory GA3450T in Thermostat-Controlled Models (Cont.) 15 15 INSTALLATION Continued Removing Valve Cover Shield 1. 2. Open bottom louver assembly by swinging the assembly down (see Figure 22). Using short Phillips screwdriver, remove the screw under the center of the branch support. Rotate valve cover shield clockwise and slide out. IMPORTANT: Do not remove shoulder screw on the left side of valve cover shield.
INSTALLATION Installing Blower Accessory GA3450T in Thermostat-Controlled Models (Cont.) INSTALLATION Continued 7. 8. 9. Insert the 4 wire harness into one of the round holes in the rear of the valve cover shield and through the rectangular hole in the front of shield (see Figure 23, page 15). Reconnect red wire to switch position 3. Reconnect blue wire to switch position 1. Reconnect green and white wires. Install the switch plate on the valve cover shield with 2 #10 screws provided (see Figure 25).
INSTALLATION Installing Blower Accessory GA3450T in Thermostat-Controlled Models (Cont.) Attaching Wood Base to Solid Floor Connecting to Gas Supply 17 17 INSTALLATION Continued Extension Cord Use extension cord if needed. The cord must have a three-prong, grounding plug and a three-hole receptacle. Make sure cord is in good shape. It must be heavy enough to carry the current needed. An undersized cord will cause a drop in line voltage. This will result in loss of power and overheating. Use a No.
INSTALLATION Connecting To Gas Supply (Cont.) Connecting Fireplace to Gas Supply INSTALLATION Continued CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" or greater diameter to allow proper gas volume to fireplace. If pipe is too small, undue loss of volume will occur. We recommend that you install a sediment trap in supply line as shown in Figure 30.
INSTALLATION Connecting Equipment shutoff Valve To Heater Control (Cont.) Checking Gas Connections 19 19 INSTALLATION Continued 2. 3. 4. 5. Route flexible gas line, included, from fireplace control to equipment shutoff valve through side or rear access holes in outer casing. Apply pipe joint sealant lightly to male threads of gas connector attached to flexible gas line/equipment shutoff valve (see Figure 32).
INSTALLATION Checking Gas Connections (Cont.) Optional Wireless Hand-Held Remote Control Accessories [Remote-Ready Models Only] INSTALLATION Continued 3. 4. Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP supply to equipment shutoff valve for propane/LP (see Figures 34 or 35). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once. Pressure Testing Fireplace Gas Connections 1. 2. 3. 4. 5. 6. 7.
INSTALLATION Optional Wireless Hand-Held Remote Control Accessories [Remote-Ready Models Only] (Cont.) Optional Wall Mounted Thermostat - GWMT1 [Remote-Ready Models Only] 21 21 INSTALLATION Continued Remote Receiver OPTIONAL WALL MOUNTED THERMOSTAT GWMT1 (Remote-Ready Models Only) Red Wire WARNING: Read and follow installation instructions. Installation should be done by a qualified installer familiar with low-voltage wiring procedures.
INSTALLATION Optional Wall Mounted Thermostat - GWMT1 [Remote-Ready Models Only] (Cont.) Optional Wall Switch - GWMS2 [Remote-Ready Models Only] Installing Log Set and Screen INSTALLATION Continued 6. Connect one bare wire end to each terminal (“W” and “R”) of the thermostat base (see Figure 43). 7. Install the base onto the wall with the provided screws. 8. Move the temperature adjustment back and forth to insure the bimetal is free from restrictions. 9. Replace the cover onto the base.
OPERATING FIREPLACE (THERMOSTAT-CONTROLLED MODELS) For Your Safety Read Before Lighting Lighting Instructions 23 23 OPERATING FIREPLACE THERMOSTAT-CONTROLLED MODELS FOR YOUR SAFETY READ BEFORE LIGHTING 4. 5. 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.
OPERATING FIREPLACE (THERMOSTAT-CONTROLLED MODELS) To Turn Gas Off To Appliance Thermostat Control Operation Manual Lighting Procedure Operating Blower OPERATING FIREPLACE (REMOTE-READY MODELS) For Your Safety Read Before Lighting OPERATING FIREPLACE Continued TO TURN OFF GAS TO APPLIANCE AUTO/OFF/ON Switch Shutting Off Fireplace 1. 2. Turn control knob clockwise to the OFF position. Turn off all electric power to the appliance (if applicable) if service is to be performed.
OPERATING FIREPLACE (REMOTE-READY MODELS) Lighting Instructions To Turn Off Gas To Appliance Manual Lighting Procedure 25 25 OPERATING FIREPLACE Continued 8. LIGHTING INSTRUCTIONS WARNING: You must operate this fireplace with the fireplace screen in place. Make sure fireplace screen is installed before running fireplace. NOTICE: During initial operation of new fireplace, burning logs will give off a paper-burning smell. Open window to vent smell. This will only last a few hours. 1. 2. 3.
OPERATING FIREPLACE (REMOTE-READY MODELS) Optional Hand-Held Remote Operation OPERATING FIREPLACE Continued THERMOSTAT SERIES (MODEL GHRCTB) OPTIONAL HAND-HELD REMOTE OPERATION Note: All remote control accessories must be purchased separately (see Accessories, pages 38 and 39). Follow instructions included with the remote control. NOTICE: You must light the pilot before using the hand-held remote control unit. See Lighting Instructions on page 25. 1.
OPERATING FIREPLACE (REMOTE-READY MODELS) Optional Hand-Held Remote Operation (Cont.) GWMT1 Wall Mounted Thermostat (Optional) GWMS2 Wall Mounted Switch (Optional) Operating Blower 27 27 OPERATING FIREPLACE Continued OPERATING BLOWER Safety Features When away from home for an extended period of time or as a child safety feature to prevent accidental ignition of the fireplace, the receiver ON/OFF/REMOTE switch should be in the OFF position. Auto Shutoff Feature 1.
INSPECTING BURNERS Pilot Flame Pattern Burner Flame Pattern INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. BURNER FLAME PATTERN PILOT FLAME PATTERN Figure 58 shows a correct burner flame pattern. Figure 59 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows sporadic, irregular flame tipping. The flame should not be dark or have an orange/reddish tinge. Figure 56 shows a correct pilot flame pattern.
CLEANING AND MAINTENANCE Cleaning Burner Injector Holder and Pilot Air Inlet Hole Log Set Cabinet 29 29 WIRING DIAGRAM CLEANING AND MAINTENANCE Injector Holder 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.
TROUBLESHOOTING TROUBLESHOOTING Note: For additional help, visit DESA Heating Products’ technical service web site at www.desatech.com. Note: All troubleshooting items are listed in order of operation. WARNING: Turn off and unplug fireplace and let cool before servicing. Only a qualified service person should service and repair fireplace. CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit.
TROUBLESHOOTING 31 31 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner does not light after ODS/pilot is lit 1. Inlet gas pressure is too low 1. Contact local natural or propane/LP gas company 2. Clean burner (see Cleaning and Maintenance, page 29) or replace burner orifice 3. Reconnect leads (see Wiring Diagram, page 29) 2. Burner orifice is clogged 3. Thermopile leads disconnected or improperly connected (Remote-Ready Models Only) 4.
TROUBLESHOOTING 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.
SPECIFICATIONS REPLACEMENT PARTS SERVICE HINTS TECHNICAL SERVICE 33 33 SPECIFICATIONS Thermostat Models: VMH10TPB, EFS10TP Btu/Hr 10,000 Thermostat Models: Remote-Ready Models: VMH10TNB, EFS10TN VMH26PRA, EFS26PR, FMH26PR 10,000 14,000/26,000 Type Gas Propane/LP Gas Only Natural Gas Only Propane/LP Gas Only Natural Gas Only Ignition Piezo Piezo Piezo Piezo Manifold Pressure 8.5" W.C. 3" W.C. 8" W.C. 3.5" W.C. Inlet Gas Pressure (in. of water) Maximum Minimum* 14" 11" 10.
ILLUSTRATED PARTS BREAKDOWN Models VMH10TPB, VMH10TNB, EFS10TP and EFS10TN ILLUSTRATED PARTS BREAKDOWN THERMOSTAT-CONTROLLED MODELS VMH10TPB, VMH10TNB, EFS10TP and EFS10TN 3 1 17 9 29 7 4 8 10 8 3 3 11 4 2 32 4 14 20 23 28 42 24 25 12-1 8 13 31 14 34 36 33 38 19 39 37 5 41 43 25 27 12 24 15 6 18 22 38 35 26 21 16 40 30 For more information, visit www.desatech.
PARTS LIST Models VMH10TPB, VMH10TNB, EFS10TP and EFS10TN PARTS LIST THERMOSTAT-CONTROLLED MODELS This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 33 of this manual. PART NUMBERS KEY NO.
ILLUSTRATED PARTS BREAKDOWN Models VMH26PRA, VMH26NRA, EFS26PR, and EFS26NR ILLUSTRATED PARTS BREAKDOWN REMOTE-READY MODELS VMH26PRA, VMH26NRA (Shown), EFS26PR, EFS26NR 3 1 4 23 8 7 20 20 35 4 9 20 20 7 10 3 25 16 18 4 15 2 20 22 39 37 12 24 38 27 40 29 26 31 33 36 14 34 6 30 5 32 18 43 31 19 21 11 41 28 44 17 13 42 For more information, visit www.desatech.
PARTS LIST 37 37 Models VMH26PRA, VMH26NRA, EFS26PR, and EFS26NR PARTS LIST REMOTE-READY MODELS This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 33 of this manual. PART NUMBERS KEY NO.
ACCESSORIES 38 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 referral information. You can also write to the address listed on the back page of this manual. CABINET MANTEL WITH BUILT-IN HEARTH BASE AND ROUNDED LEG STYLING EQUIPMENT SHUTOFF VALVE - GA5010 For all models. Equipment shutoff valve with 1/8" NPT tap.
ACCESSORIES 39 39 ACCESSORIES Continued RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL KIT - GHRCTB For all Remote-Ready Models. Allows the fireplace to be operated in a manually or thermostatically controlled mode. You can turn the fireplace on and off without ever leaving the comfort of your easy chair. CABINET MANTEL AND FULL HEARTH BASE GMC80F Series - Oak Finished GMC81U Series - Unfinished Birch GMC82F Series - Cherry Finished Birch For all models.
NOTES NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________
41 OWNER'S REGISTRATION FORM • ACCESSORIES In order to provide better customer service for this and future purchases, we recommend that you register your product with us. You can register online at www.desatech.com. If access to our website is not available to you, please complete this Owner’s Registration Form and mail to the address on the back of this owner’s manual. Please provide the following product information: Brand: (Comfort Glow, Vanguard, etc.) Model: (EFP33PR, VTGH33NR, etc.
TAPE 42 Postage Required 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 For more information, visit www.desatech.
NOTES 43 43 NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ ____________
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.
