UNVENTED (VENT-FREE) GAS COMPACT CLASSIC HEARTH® FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL Shown with optional cabinet mantel/hearth base accessory Remote-Ready Models VMH26PRB and VMH26NRB 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 Optional Remote Control Accessories.................. 4 Local Codes......................................................... 4 Product Features.................................................. 5 Unpacking............................................................ 5 Assembly..............................................................
SAFETY Continued Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this fireplace. WARNING: Any change to this fireplace or its controls can be dangerous. Carefully supervise young children when they are in the room with fireplace. When using the hand-held remote accessory keep selector switch in the OFF position to prevent children from turning on burners with remote.
SAFETY Continued Note: During initial operation, slight smoking could occur due to log curing and fireplace burning manufacturing residues. 8. To prevent the creation of soot, follow the instructions in Cleaning and Maintenance, page 28. 9. Before using furniture polish, wax, carpet cleaner, or similar products, turn fireplace off. If heated, the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture. 10.
Local Codes Product Features Continued Safety Pilot State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts. Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit. Vent-free gas products are prohibited for bedroom and bathroom installation in the Commonwealth of Massachusetts.
Assembly Continued 7. Gently rotate hood to upright position. Make sure hood tabs are behind louvers and hood is resting on firebox top (see Figure 3,). 8. Align screw holes on hood with screw holes on firebox top. 9. Insert screws as shown in Figure 3, page 6. Tighten screws firmly.
AIR FOR COMBUSTION AND VENTILATION Continued c. caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings. If your home meets all of these three criteria, you must provide additional fresh air. See Ventilation Air From Outdoors, page 8.
AIR FOR COMBUSTION AND VENTILATION Continued B. Vent room directly to the outdoors. See Ventilation Air From Outdoors. C. Install a lower Btu/Hr fireplace, if lower Btu/Hr size makes room unconfined. If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.
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 Continued Fireplace Clearances WARNING: Maintain the minimum clearances shown in Figure 6. If you can, provide greater clearances from floor, ceiling, and joining wall. If your fireplace is to be used with an optional mantel, the installation instructions included with your mantel shows an CSA approved method of attaching the fireplace/mantel system to a wall. IMPORTANT: Only use optional cabinet or corner mantels specified in this manual.
INSTALLATION Continued Note: If not installing blower accessory, you may wish to run electrical wiring to your fireplace for future blower installation (see Accessories, page 35). Use only approved three-wire electrical wiring. Note: A qualified installer should make all electrical connections. 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.
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 of adjacent walls and mantels become hot during operation. Walls and mantels above the firebox may become hot to the touch. If installed properly, these temperatures meet the requirement of the national product standard. Follow all minimum clearances shown in this manual.
INSTALLATION Continued 4. Route flexible gas line through access hole in hearth base. 5. Center cabinet mantel on hearth base (see Figure 12). Make sure mantel is flush against wall and centered left to right on base. 6. Use screws provided with mantel accessory to attach mantel assembly to base (see mantel instruction sheet). 7. Attach flexible gas line to fireplace gas regulator. See Connecting to Gas Supply, page 17. 8.
INSTALLATION Continued Installing Optional Blower Accessory GA3450TA Removing Upper Louver Assembly and Branch Support To install the blower accessory, you must first remove the upper louver assembly. 1. Lift screen off fireplace and remove log set if installed. 2. Remove 2 screws from each side of branch support and pull branch support out (see Figure 15). 3. Remove 4 screws from upper louver assembly (see Figure 15). Save these screws. 4. Pull upper louver assembly straight out from the cabinet.
INSTALLATION Continued Blower Bracket Assembly Wire Harness Wiring Routing Hole in Baffle Baffle Blower Mounting Holes Screw Power Cord Switch Snap Bushing 3 2 1 Switch Plate Blue Black Red Wire Harness Valve Cover Shield Lower Louver Door Figure 16 - Installing Blower Bracket Assembly Fan Switch (Auto/Off/On) Auto 1 Off 2 3 On Blue Thermostat Switch (N.O.) Blue 110/115 V.A.C.
INSTALLATION Continued For Built-In Installation 2. Follow steps 2 through 6 in Installing Blower Accessory, page 14. 3. A licensed electrician must follow the wiring diagram to connect incoming electrical supply to fan kit wiring harness (see Figure 19). 4. Plug power cord to the outlet receptacle (not provided) as shown in Figure 20. Wind the extra power cord and tie with plastic wire strap (see Figure 20). Set the power cord bundle between the burner bracket and outer casing, away from the burner. 5.
INSTALLATION Continued CONNECTING TO GAS SUPPLY WARNING: This appliance requires a 45° male flare fitting 5/8"-18 UNF (Unified National Fine Thread) inlet connection and the flexible gas line provided. WARNING: A qualified service person must connect fireplace to gas supply. Follow all local codes. WARNING: Never connect natural gas fireplace to private (non-utility) gas wells. This gas is commonly known as wellhead gas.
INSTALLATION Continued We recommend that you install a sediment trap in supply line as shown in Figure 22. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into fireplace controls. If sediment trap is not installed or is installed wrong, fireplace may not run properly.
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. CAUTION: Make sure external regulator has been installed between propane/LP supply and fireplace.
INSTALLATION Continued Pressure Testing Fireplace Gas Connections 1. Open equipment shutoff valve (see Figure 25, page 19). 2. Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve. 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 26 or 27, page 19). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. 5. Correct all leaks at once. 6.
INSTALLATION Continued Battery Cover Remote Control Unit Terminal Wires Battery Housing 9-Volt Battery Figure 31 - Installing Battery in Hand-Held Remote Control Unit optional Wall Mounted Thermostat - GWMT1 WARNING: Read and follow installation instructions. Installation should be done by a qualified installer familiar with low-voltage wiring procedures. WARNING: Do not connect this thermostat to any electrical source! Electrical shock and/or fire hazard will occur. 3. Route 25 ft.
INSTALLATION Continued 8. Move temperature adjustment back and forth to insure bimetal is free from restrictions. 9. Replace cover onto base. (Upon installation, thermostat must be allowed to stabilize at room temperature for a minimum of 30 minutes for proper operation). 10. Set switch on fireplace to Auto position. 11. Set temperature adjustment to desired setting. This thermostat has been electronically calibrated at the factory. No adjustment or leveling is necessary.
Operation 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. • Do not touch any electric switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone.
OPERATIon Continued 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. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. • If control knob does not pop out when released, contact a qualified service person or gas supplier for repairs. Note: If pilot goes out, repeat steps 4 through 8, page 23. 9.
OPERATIon Continued NOTICE: You must light the pilot before using the hand-held remote control unit. See Lighting Instructions on page 23. After lighting, let pilot flame burn for about one minute. Turn control knob to ON position. Adjust flame adjustment knob anywhere between HI and LO. Slide the selector switch to the REMOTE position (see Figure 39). Note: The burner may light if hand-held remote was on when selector switch was last turned off.
OPERATIon Continued 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. If the average room temperature reaches a range of 82° F (28° C) to 92° F (33° C), hand-held remote control will perform a safety override and shut fireplace off. This feature is not available in MANU mode. 2.
Inspecting Burners Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 43 shows a correct pilot flame pattern. Figure 44 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the fireplace 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, pet hair, bedding material, etc.
CLEANING AND MAINTENANCE Continued LOG Set CABINET • If you remove one-piece log set for cleaning, refer to Installing Log Set and Screen, page 22, for placement instructions. • Replace log set if broken or chipped (dimesized or larger). Air Passageways Use a vacuum cleaner or pressurized air to clean. Exterior Use a soft cloth dampened with a mild soap and water mixture. Wipe cabinet to remove dust.
Troubleshooting 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. 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.
TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob pressed in is released 2. Control knob not pressed 2. After ODS/pilot lights, keep in long enough control knob pressed in 30 seconds 3. Safety interlock system 3. Wait one minute for safety has been triggered interlock system to reset. Repeat ignition operation 4. Equipment shutoff valve 4.
TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE Slight smoke or odor during 1. Residues from manufacinitial operation turing processes and log curing 2. Not enough air 3. Gas regulator defective Fireplace produces a whistling 1. Turning control knob to noise when burner is lit HI position when burner is cold 2. Air in gas line 3. Air passageways on fireplace blocked 4. Dirty or partially clogged burner orifice REMEDY 1. Problem will stop after a few hours of operation 2.
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 VMH26PRB VMH26NRB • • • • • • • • • • Rating: 14,000/26,000 Btu/Hr Gas Type: Propane/LP Gas Only Ignition: Piezo Manifold Pressure: 8" W.C. Inlet Gas Pressure (in. of water): Maximum: 14" W.C., Minimum*: 11" W.C. • Dimensions (H x W x D): Fireplace (including hood and screws) - 25 7/8" x 26 13/16" x 9 3/8" Carton - 32 5/8" x 27 13/16" x 11 5/8" • Weight: Fireplace - 44.5 lbs. Shipping - 48 lbs.
Accessories Purchase these 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. Perimeter TRIM KIT - GA6095 Optional four-sided perimeter trim kit for recessed built-in installations (when unit is raised off of the floor). Provides a finished appearance by covering rough edges of wall opening.
Parts MODELS VMH26PRB and VMH26NRB 3 6 1 8 7 20 23 4 20 9 10 35 20 20 7 3 4 25 15 16 2 18 20 22 39 12 36 37 24 38 27 40 29 31 33 14 34 8 26 30 5 32 18 43 31 19 21 11 41 28 44 17 13 36 42 www.desatech.
PARTS 1 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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 102633-02 102624-02 099230-02 098304-01 109824-05 098304-02 098304-06 102635-02 103209-09 104281-02BR 102638-01 PP225 PP231 ** 104322-01 104335-01CK 102649-02 102445-01 099918-02 098271-10 107186-01 M11084-26 098249-01 103781-01 103781-02 102639-01 101628-01 104305-01 103295-05BR 107048-01 104313-01 104313-02 M10908-2 103734-01 101006-02 097809-02 101629-01 101629-02 M12461-26
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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.
