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Desa FVFM27NR/PR - page 1
UNVENTED (VENT -FREE) GAS LOG HEA TER Also Design-Cer tified As A V ented Decorative Appliance OWNER’S OPERA TION AND INST ALLA TION MANUAL Patent Pending P I L O T O F F O N L O R E M O T E O F F HI FLAME-MAX ® Multi-Sided Log Design VYM27NR/PR FVFM27NR/PR Remote Control Ready Model Save this manual for future reference. WARNING: If the informa ...
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Desa FVFM27NR/PR - page 2
2 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com SAFETY INFORMA TION DANGER: Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working proper ...
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Desa FVFM27NR/PR - page 3
3 108382 OWNER’S MANUAL For more information, visit www.desatech.com PRODUCT IDENTIFICA TION LOCAL CODES Install and use heater 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 Ne ...
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Desa FVFM27NR/PR - page 4
4 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com PROVIDING ADEQUATE VENTILATION The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, Sec- tion 5.3, Air for Combustion and Ventilation. All spaces in homes fall into one of the three following ventilation classifications: 1. Unusually ...
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Desa FVFM27NR/PR - page 5
5 108382 OWNER’S MANUAL For more information, visit www.desatech.com 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 pas ...
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Desa FVFM27NR/PR - page 6
6 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com AIR FOR COMBUSTION AND VENTILA TION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must pro- vide two permanent openings: one ...
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Desa FVFM27NR/PR - page 7
7 108382 OWNER’S MANUAL For more information, visit www.desatech.com INSTALLATION AND CLEARANCES (Vent-Free Operation Only) WARNING: Maintain the mini- mum clearances. If you can, pro- vide greater clearances from floor, ceiling, and adjoining wall. WARNING: Never install the heater • in a bedroom or bathroom un- less installed as a vented ap- ...
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Desa FVFM27NR/PR - page 8
8 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com INST ALLA TION Continued Minimum Noncombustible Material Clearances If Not Using Mantel Note: If using a mantel, proceed to If Using Mantel . If not using a mantel, follow the information below. You must have noncombustible material(s) above both fireplace o ...
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Desa FVFM27NR/PR - page 9
9 108382 OWNER’S MANUAL For more information, visit www.desatech.com INST ALLA TION Continued MANTEL CLEARANCES In addition to meeting noncombustible ma- terial clearances, you must also meet re- quired clearances between fireplace open- ings and mantel shelf on each side of the fireplace. If you do not meet the clearances listed below, you will ...
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Desa FVFM27NR/PR - page 10
10 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com INST ALLA TION Continued INSTALLING HEATER BASE ASSEMBLY WARNING: If installing in a sunken fireplace, special care is needed. You must raise the fire- place floor to allow access to heater control panel. This will in- sure adequate air flow and guard again ...
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Desa FVFM27NR/PR - page 11
11 108382 OWNER’S MANUAL For more information, visit www.desatech.com 7. Mark screw locations through one hole on each side of the mounting bracket (see Figure 12). If installing in a brick- bottom fireplace, mark screw locations in mortar joint of bricks. 8. Remove heater base from fireplace. If installing optional control accessories, do so at ...
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Desa FVFM27NR/PR - page 12
12 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once. CHECKING GAS CONNECTIONS INST ALLA TION Continued * Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See ...
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Desa FVFM27NR/PR - page 13
13 108382 OWNER’S MANUAL For more information, visit www.desatech.com Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Fig- ure 15, page 12). 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 heater is in the OFF position. 4. Check all ...
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Desa FVFM27NR/PR - page 14
14 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com OPERA TING HEA TER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighte ...
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Desa FVFM27NR/PR - page 15
15 108382 OWNER’S MANUAL For more information, visit www.desatech.com 8. Keep contr ol knob pr essed in for 30 seconds after lighting pilot. After 30 seconds, release contr ol knob . • If contr ol knob does not pop out when released, contact a qualif ied service person or gas supplier f or repairs. Note: If pilot goes out, repeat steps 4 throug ...
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Desa FVFM27NR/PR - page 16
16 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com OPERA TING HEA TER Continued Figure 26 - Thermostat Hand-Held Remote Control Unit Selections (GHRCTA only) Figure 25 - Setting the Selector Switch, Control Knob, and Flame Adjustment Knob for Remote Operation Selector Switch in Remote Position (Optional Rem ...
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Desa FVFM27NR/PR - page 17
17 108382 OWNER’S MANUAL For more information, visit www.desatech.com BURNER PRIMARY AIR HOLES Air is drawn into the burner through the holes in the fitting at the burner entrance. These holes may become blocked with dust or lint. Periodically inspect these holes for any blockage and clean if needed. Blocked air holes will create soot. MAIN BURNE ...
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Desa FVFM27NR/PR - page 18
18 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com 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. POSSIBLE CAUS ...
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Desa FVFM27NR/PR - page 19
19 108382 OWNER’S MANUAL For more information, visit www.desatech.com OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial operation Moisture/condensation noticed on windows Heater produces a whistling noise when burner is lit White powder res ...
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Desa FVFM27NR/PR - page 20
20 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com 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 p ...
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Desa FVFM27NR/PR - page 21
21 108382 OWNER’S MANUAL For more information, visit www.desatech.com SPECIFICA TIONS Natural Gas Propane/LP Btu (Variable) 20,000/39,000 20,000/39,000 Type Gas Natural Gas Only Propane/LP Only Ignition Piezo Piezo Pressure Manifold 3.5" W.C. 8.0" W.C. Inlet Gas Pressure (in. of water) Maximum 10.5" 14" Minimum* 5" 11&quo ...
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Desa FVFM27NR/PR - page 22
22 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com ILLUSTRA TED PA R T S BREAKDOWN VYM27NR FVFM27NR VYM27PR FVFM27PR 5 O F F P I L O T O N H I L O O F F P I L O T O N H I L O 1 9 3 2 13 12 15 14 18 17 12 12 16 21 12 19 6 8 7 4 11 12 20 10 9 23 22 NOTE: Part numbers 22 and 23 are for natural gas model only. ...
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Desa FVFM27NR/PR - page 23
23 108382 OWNER’S MANUAL For more information, visit www.desatech.com P ARTS LIST VYM27NR FVFM27NR VYM27PR FVFM27PR This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 21 of this manual. PART NUMBER KEY VYM27NR VYM27PR NO. FVFM27NR FVFM27PR DESCRIPTION QTY. ...
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Desa FVFM27NR/PR - page 24
24 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA International at 1-800-458-6860 for referral informa- tion. You can also write to the address listed on the back page of this manual. E ...
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Desa FVFM27NR/PR - page 25
25 108382 OWNER’S MANUAL For more information, visit www.desatech.com 1. Where will the product be used? ❍ Living/Family Room ❍ Office/W arehouse ❍ Utility Shed/Outbuilding ❍ Garage ❍ Bedroom ❍ Bathroom ❍ Other 2. If you bought this product yourself, did you plan to purchase this type of product before going into the store? ❍ Y es ...
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Desa FVFM27NR/PR - page 26
26 108382 UNVENTED GAS LOG HEA TER FLAME-MAX ® For more information, visit www.desatech.com 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 Postage Required TM ...
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Desa FVFM27NR/PR - page 27
27 108382 OWNER’S MANUAL For more information, visit www.desatech.com NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ ________________________________________________________________________________ ...
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Desa FVFM27NR/PR - page 28
KEEP THIS WARRANTY W ARRANTY INFORMA TION 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. Model Serial No. Date Purchased LIMITED ...
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