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UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATER
ALSO DESIGN-CERTIFIED AS A VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL
Heat Majic™
Models FVF18N,
®
FVF24N, and
FVF30N
Patent Pending
18", 24" and 30" Variable
Manually-Controlled Models
WARNING: Improper installation, ad-
WARNING: If the information in this
justment, alteration, service, or mainte-
manual is not followed exactly, a fire or
nance can cause injury or property dam-
explosion may result causing property
age. Refe
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 2. If you smell gas 10. Do not allow fans to blow directly into SAFETY • shut off gas supply the fireplace. Avoid any drafts that al- INFORMATION • do not try to light any appliance ter burner flame patterns. Ceiling fans • do not touch any electrical switch; do can create drafts that alter burner flame not use any phone in your building patterns. Altered burner patterns can WARNINGS WARNING ICON G 001 • immediately call your
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OWNER’S MANUAL PRODUCT PRODUCT IDENTIFICATION FEATURES One-Piece OPERATION Burner Log Set This heater is clean burning. It requires no outside venting. There is no heat loss out a vent or up a chimney. Heat is generated by realistic, dancing yellow flames. This heater is designed for vent-free operation with flue damper closed. It has been tested and ap- proved to ANS Z21.11.2 standard for unvented heaters. State and local codes in some areas prohibit the use of vent-free heaters. This heater ma
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER Confined and Unconfined Space PROVIDING ADEQUATE AIR FOR VENTILATION The National Fuel Gas Code (ANS Z223.1, COMBUSTION AND 1992 Section 5.3) defines a confined space The following are excerpts from National VENTILATION as a space whose volume is less than 50 Fuel Gas Code. NFPA 54/ANS Z223.1, Sec- 3 cubic feet per 1,000 Btu per hour (4.8 m per tion 5.3, Air for Combustion and Ventilation. kw) of the aggregate input rating of a
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OWNER’S MANUAL AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater 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 x Width x Height = _________________cu.
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER AIR FOR 12" COMBUSTION AND VENTILATION Ventilation Continued Ventilation Grills Grills Into Adjoining Room, Into Adjoining VENTILATION AIR Or Option 2 Room, Remove Ventilation Air From Inside Option 1 Door into Building Adjoining This fresh air would come from an adjoining Room, unconfined space. When ventilating to an Option adjoining unconfined space, you must pro- 3 vide two permanent openings: one within 12" of the ceili
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OWNER’S MANUAL INSTALLATION AND INSTALLATION WARNING: Never install the CLEARANCES (Vent-Free heater Operation Only) NOTICE: This heater is intended • in a bedroom or bathroom un- for use as supplemental heat. less installed as a vented ap- WARNING: Maintain the mini- Use this heater along with your pliance (see page 10) mum clearances. If you can, pro- primary heating system. Do not • in a recreational vehicle vide greater clearances from install this heater as your pri- • where curtains, fur
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER If Using Mantel if noncombustible material is more than INSTALLATION 12", you may need the hood accessory to You must have noncombustible material(s) Continued deflect heat away from your mantel shelf. above the fireplace opening. Noncombus- See Figure 5 and Figures 6 and 7 on page 9 tible materials (such as slate, marble, tile, NOTICE: Manual control heaters for minimum clearances. etc.) must be at least 1/2 inch thick. With m
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OWNER’S MANUAL INSTALLATION Mantel Shelf 10" Underside of Continued 8" Mantel Shelf 6" 1 MANTEL CLEARANCES 2 /2" In addition to meeting noncombustible ma- All minimum terial clearances, you must also meet distances are required clearances between fireplace open- in inches ing and mantel shelf. If you do not meet the Minimum Non- (A) clearances listed below, you will need a Combustible Log Set Material hood. 12" 18" 20" 22" 24" 24"/30" Models 3 8" 8" 14" 16 /4" 20" 18" Model Determining Minim
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER See chart below for minimum permanent INSTALLING HEATER BASE INSTALLATION flue opening you must provide. Attach ASSEMBLY Continued damper clamp so the minimum permanent flue opening will be maintained at all times. INSTALLING DAMPER WARNING: You must secure CLAMP ACCESSORY FOR this heater to fireplace floor. If Chimney Minimum Permanent not, heater will move when you VENTED OPERATION Height (ft.) Flue Opening (sq. ins.) adjust
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OWNER’S MANUAL INSTALLATION Continued Heater Gas Regulator Installation Items Needed • hardware package (provided with heater) • approved flexible gas hose (not provided) Fitting (if allowed by local codes) Flexible Gas Hose (if • sealant (resistant to propane/LP gas, not allowed by local codes) provided) • electric drill with 3/16" drill bit (metal Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator or masonry as applicable) • flathead screwdriver 1. Apply pipe joint sealant lightly
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER Installation must include a manual shutoff Install sediment trap in supply line as shown INSTALLATION valve, union, and plugged 1/8" NPT tap. in Figure 13. Locate sediment trap where it Continued Locate NPT tap within reach for test gauge is within reach for cleaning. Locate sedi- hook up. NPT tap must be upstream from ment trap where trapped matter is not likely CONNECTING TO GAS heater (see Figure 13). to freeze. A sediment t
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OWNER’S MANUAL Test Pressures Equal To or Less Than Pressure Testing Heater Gas INSTALLATION 1/2 PSIG Connections Continued 1. Close manual shutoff valve (see Fig- 1. Open manual shutoff valve (see Fig- ure 14). ure 14). CHECKING GAS 2. Pressurize supply piping system by ei- 2. Open main gas valve located on or near CONNECTIONS ther using compressed air or opening gas meter. main gas valve located on or near gas 3. Make sure control knob of heater is in WARNING: Test all gas pip- meter. the OFF
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER One Piece INSTALLATION Log Set Continued INSTALLING LOGS WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury. CAUTION: After installation and periodically thereafter, check to ensure that no flame comes in contact with any log. With the heater set to High, check to see if flames contact any
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OWNER’S MANUAL 4. Wait five (5) minutes to clear out any LIGHTING OPERATING gas. Then smell for gas, including INSTRUCTIONS HEATER near the floor. If you smell gas, STOP! Follow “B” in the safety in- WARNING: FOR YOUR SAFETY formation in column 1. If you don’t • If fireplace has glass doors, smell gas, go to the next step. READ BEFORE never operate this heater with 5. Slightly depress and turn control LIGHTING glass doors closed. If you op- knob counterclockwise to C-clockwise erate heater wi
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER BURNER PRIMARY AIR OPERATING INSPECTING HOLES HEATER BURNERS Air is drawn into the burner through the Continued Check pilot flame pattern and burner flame holes in the fitting at the burner entrance. patterns often. VARIABLE CONTROL These holes may become blocked with dust or lint. Periodically inspect these holes for OPERATION PILOT FLAME PATTERN any blockage and clean if needed. Blocked The variable control valve can be set t
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OWNER’S MANUAL TROUBLESHOOTING WARNING: Turn off and un- CAUTION: Never use a wire, plug heater 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 vice person should service and pilot unit. site at www.desatech.com. repair heater. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor butt
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 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 gas company 2. Burner orifice clogged 2. Clean burner (see Cleaning and Mainte- nance, page 20) or replace burner orifice 3. Burner orifice diameter is too small 3. Replace burner orifice Delayed ignition burner 1. Manifold pressure is too low 1. Contact local na
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OWNER’S MANUAL 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 heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 4. Check the injector holder located at the LOGS CLEANING AND end of the burner tube again. Remove • If you remove logs for cleaning, refer to MAINTENANCE any large particles of dust, dirt, lint, or Installing Logs, page 14 to properly re- pet hairs with a soft cloth or vacuum place logs. cleaner nozzle. WARNING: Turn off heater • Replace log(s) if broken or chipped 5. Blow air into the primary air holes on and let cool before
