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®
VENT-FREE NATURAL GAS
®
COMPACT CLASSIC HEARTH FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
VMH10TNB
10,000 Btu/Hr with
Thermostat
Shown with Optional
Cabinet Mantel/Hearth
Base Accessory
WARNING: Improper instal-
WARNING: If the information in this manual
lation, adjustment, alteration,
is not followed exactly, a fire or explosion
service, or maintenance can
may result causing property damage, per-
cause injury or property dam-
sonal injury, or loss of life.
age. Refer to this manual f
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE 4. Do not use this fireplace as a wood- SAFETY burning fireplace. Use only the logs WARNING: Do not use a provided with the fireplace. INFORMATION blower insert, heat exchanger insert, or other accessory not ap- 5. Do not add extra logs or ornaments proved for use with this heater. such as pine cones, vermiculite, or rock WARNINGS WARNING ICON G 001 wool. Using these added items can cause sooting. Do not add lava rock IMPORTANT: Read this owne
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OWNER’S MANUAL PRODUCT UNPACKING 1. Remove log box and fireplace from IDENTIFICATION carton. IMPORTANT: The fireplace hood is inside the cardboard protective Fireplace end wrap on the left side of fireplace Cabinet (as viewed from front). A decal is on the outside of the cardboard end wrap stating hood is enclosed (see Figure 2). 2. Remove hood from cardboard protec- tive end wrap as shown in Figure 2. Screen 3. Remove all protective packaging ap- plied to fireplace for shipment. 4. Make sure yo
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE ASSEMBLY Shoulder Log Screw WARNING: Always have branch support and screen in place before operating fireplace. This prevents excessive tempera- tures on fireplace surfaces. WARNING: Failure to position the parts in accordance with these Burner diagrams or failure to use only Support With Log parts specifically approved with Locator this fireplace may result in prop- Tabs erty damage or personal injury. ASSEMBLING FIREPLACE Tools Required: • P
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OWNER’S MANUAL Confined and Unconfined Space PROVIDING ADEQUATE AIR FOR VENTILATION The National Fuel Gas Code, ANS Z223.1 COMBUSTION AND defines a confined space as a space whose The following are excerpts from National VENTILATION volume is less than 50 cubic feet per 1,000 Fuel Gas Code. NFPA 54/ANS Z223.1, Sec- 3 Btu per hour (4.8 m per kw) of the aggre- tion 5.3, Air for Combustion and Ventilation. gate input rating of all appliances installed WARNING: This heater shall All spaces in homes
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR FIREPLACE LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install fireplace plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. 1. Determine the volume of the space (length x width x height). Length
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OWNER’S MANUAL AIR FOR COMBUSTION AND 12" VENTILATION Continued VENTILATION AIR Ventilation Grills Into Adjoining Room, Ventilation Option 2 Ventilation Air From Inside Grills Or into Adjoining Remove Building Room, Door into Option 1 Adjoining This fresh air would come from an adjoining Room, Option 3 unconfined space. When ventilating to an adjoining unconfined space, you must pro- vide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall conn
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE sign-certified equipment shutoff valve from INSTALLATION your dealer. See Accessories, page 27. CAUTION: This heater creates warm air currents. These currents NOTICE: This heater is intended Note: If desired, purchase a four-sided brass move heat to wall surfaces next to for use as supplemental heat. Use trim kit for built-in installations. See Acces- heater. Installing heater next to this heater along with your pri- sories, page 27. vinyl or cl
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OWNER’S MANUAL 5. Carefully set fireplace in front of rough INSTALLATION opening with back of fireplace inside Continued wall opening. CEILING 6. Attach flexible gas line to fireplace gas 10 1/2" regulator. See Connecting Fireplace to 26 7/8" Gas Supply, page 15. 36" Minimum 7. If the optional blower has been installed Top Of 3/4" Off connect blower to electrical source. Mantel Can The Floor Be Flush Options one and two: Route blower With Wall 26 7/8" Minimum electrical cord through side or rear
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE 8. Place assembly next to wall at installa- OPTIONAL MANTEL INSTALLATION tion location. INSTALLATION Continued 9. Remove brass trim kit and mantel. Be Note: Refer to instructions provided with Mantel Clearances for Built-In careful not to damage wall or mantel. the mantel for assembly instructions. Refer 3 Installation 10. Attach wood base to floor with two 1 /4" to instructions below for system installa- black screws provided (see Figure 14). I
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OWNER’S MANUAL Branch INSTALLING BLOWER INSTALLATION Support Shoulder ACCESSORY GA3400T Continued Screw Removing Upper Louver Assembling Brass Trim (Brass Remove Assembly trim shipped with mantel) Screw 1. Remove packaging from three remain- To install the blower accessory, you must ing pieces of brass trim. first remove the upper louver assembly. Valve 2. Locate two adjusting plates with set 1. Lift screen off heater. Cover screws, and two shims in the hardware Shield 2. Remove 4 screws from lo
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3 2 1 ® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE 6. Route the wire harness through the 9. Install the switch plate on the valve INSTALLATION hole in left side of baffle. Pull wire cover shield with 2 #10 screws provided Continued harness through lower opening above (see Figure 19). Reinstall the valve where the valve shield was removed. cover shield. Route power cord out of 4. Carefully disconnect green and white (see Figure 18). the cabinet by inserting it through the wires at their ins
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3 2 1 OWNER’S MANUAL Fan Switch Extension Cord (Auto/Off/On) INSTALLATION Auto 1 2 Off 3 Blue Thermostat Use extension cord if needed. The cord must Continued Switch On (N.O.) have a three-prong, grounding plug and a For Built-In Installation Blue 110/115 V.A.C. Red three-hole receptacle. Make sure cord is in Blower Motor Black Red good shape. It must be heavy enough to carry White White WARNING: A licensed elec- Green Green the current needed. An undersized cord will trician must connect the
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE Apply pipe joint sealant lightly to male INSTALLATION CAUTION: Use only new, threads. This will prevent excess sealant Continued black iron or steel pipe. Inter- from going into pipe. Excess sealant in pipe nally-tinned copper tubing may could result in clogged fireplace valves. Attaching Wood Base to Solid be used in certain areas. Check Floor your local codes. Use pipe of CAUTION: Use pipe joint seal- 1/2" or greater diameter to al- For atta
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OWNER’S MANUAL INSTALLATION Continued Branch CONNECTING FIREPLACE Support TO GAS SUPPLY Installation Items Needed Shoulder Screw • Phillips screwdriver • sealant (resistant to propane/LP gas, not provided) Flexible Gas 1. Remove fireplace screen. Remove two Line 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 branch sup- port to fireplace (see Figure
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE Test Pressures Equal To or Less Than Pressure Testing Fireplace Gas INSTALLATION 1/2 PSIG (3.5 kPa) Connections Continued 1. Close equipment shutoff valve (see Fig- 1. Open equipment shutoff valve (see Fig- ure 26). CHECKING GAS ure 26). 2. Pressurize supply piping system by ei- CONNECTIONS 2. Open main gas valve located on or near ther using compressed air or opening gas meter. main gas valve located on or near gas WARNING: Test all gas pip- 3
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OWNER’S MANUAL Note: You may be running this fire- LIGHTING OPERATING place for the first time after hooking INSTRUCTIONS FIREPLACE up to gas supply. If so, the control knob may need to be pressed in for WARNING: You must operate FOR YOUR SAFETY 30 seconds. This will allow air to this fireplace with the fireplace bleed from the gas system. READ BEFORE screen in place. Make sure fire- • If control knob does not pop up LIGHTING place screen is installed before when released, contact a qualified r
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OFF ON ® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE MANUAL LIGHTING OPERATING PROCEDURE FIREPLACE 1. Follow steps 1 through 5 under Light- Continued ing Instructions, page 17. 2. With control knob pressed in, strike TO TURN OFF GAS match. Hold match to pilot until pi- TO APPLIANCE lot lights. Shutting Off Fireplace 3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 1. Turn control knob clockwise seconds, release control knob. Now to the OFF position. follow ste
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OWNER’S MANUAL BURNER FLAME PATTERN INSPECTING Figure 33 shows a correct burner flame BURNER pattern. Figure 34 shows an incorrect burner flame pattern. The incorrect burner flame Check pilot flame pattern and burner flame pattern shows the flame consistently higher pattern often. than one inch above the log. PILOT FLAME PATTERN If burner flame pattern is incorrect, as shown in Figure 34 Figure 31 shows a correct pilot flame pattern. • turn fireplace off (see To Turn Off Gas to Figure 32 shows a
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® VMH10TNB VENT-FREE NATURAL GAS COMPACT FIREPLACE TROUBLESHOOTING WARNING: Turn off and un- CAUTION: Never use a wire, plug fireplace and let cool before needle, or similar object to clean Note: For additional help, visit DESA servicing. Only a qualified ser- ODS/pilot. This can damage ODS/ International’s technical service web site vice person should service and pilot unit. at www.desatech.com. repair fireplace. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLE
