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Desa VYM27PR - page 1
UNVENTED (VENT -FREE) PROP ANE/LP GAS LOG HEA TER Also Design-Certified As A V ented Decorative Appliance ® ® Patent Pending P I L O T O F F O N LO REMOTE OFF HI FLAME-MAX ® Multi-Sided Log Design OWNER’S OPERA TION AND INST ALLA TION MANUAL VYM27PR Remote Control Ready Model Save this manual for future reference. WARNING: If the information i ...
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Desa VYM27PR - page 2
2 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® 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 properly. Get fresh air at on ...
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Desa VYM27PR - page 3
3 104675 OWNER’S MANUAL AUTO MAN OFF STATUS ON LO HI TEMP 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 ANS Z223.1 , also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway ...
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Desa VYM27PR - page 4
4 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® PROVIDING ADEQUATE VENTILATION The following ar e excerpts from National Fuel Gas Code. NFPA 54/ANS Z223.1, Sec- tion 5.3, Air for Combustion and Ventilation. All spaces in homes fall into one of the three following ventilation classifications: 1. Unusually T ight Construction 2. ...
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Desa VYM27PR - page 5
5 104675 OWNER’S MANUAL 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 ro ...
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Desa VYM27PR - page 6
6 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® 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 within 12" of the ...
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Desa VYM27PR - page 7
7 104675 OWNER’S MANUAL 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- pliance, see page 10 • in a recreational ve ...
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Desa VYM27PR - page 8
8 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® 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 openings. Noncom- bustib ...
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Desa VYM27PR - page 9
9 104675 OWNER’S MANUAL 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 need a hood. DETERMINING MINIMUM MANTEL CLEAR ...
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Desa VYM27PR - page 10
10 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® 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 against sooting. Raise firep ...
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Desa VYM27PR - page 11
11 104675 OWNER’S MANUAL 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 this time. Follow all directions provided wit ...
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Desa VYM27PR - page 12
12 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once. CHECKING GAS CONNECTIONS 2. Cap of f open end of gas pipe where manual shutof f valv e was connected. 3. Pressurize supply piping system by ei- ther using compress ...
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Desa VYM27PR - page 13
13 104675 OWNER’S MANUAL INST ALLA TION Continued 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. INSTALLING LOGS It is very important to install the logs exactly as instructed. Do not modify logs. Only us ...
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Desa VYM27PR - page 14
14 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® 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 lighted by hand. When lightin ...
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Desa VYM27PR - page 15
15 104675 OWNER’S MANUAL 8. Keep contr ol knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release contr ol knob. • If control 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 through 8. 9. Slightly push in and turn contr ol knob ...
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Desa VYM27PR - page 16
16 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® OPERA TING HEA TER Continued TEMP ST A TUS HI LO MAN ON AUT O OFF Increases Room Temperature Decreases Room Temperature Turns Burner On and Off Shows Current Operation Mode Shows Temperature Setting Allows Burner to be Turned On and Off with the Hand- Held Remote Unit. Figure 24 ...
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Desa VYM27PR - page 17
17 104675 OWNER’S MANUAL 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 CAUSE 1. Ignitor electrode not connected to igni- tor cable 2. Ignitor ...
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Desa VYM27PR - page 18
18 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® 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 resid ...
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Desa VYM27PR - page 19
19 104675 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 re ...
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Desa VYM27PR - page 20
20 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® SPECIFICA TIONS 27" Remote Ready Btu (Variable) 20,000/39,000 Type Gas Propane Only Ignition Piezo Pressure Manifold 8.0" W.C. Inlet Gas Pressure (in. of water) Maximum 14" Minimum* 11" Shipping Weight 32 lbs. * For input adjustment SER VICE HINTS When Gas Pre ...
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Desa VYM27PR - page 21
21 104675 OWNER’S MANUAL CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person. Heater may need more frequent cleanin ...
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Desa VYM27PR - page 22
22 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® ILLUSTRA TED PA R T S BREAKDOWN VYM27PR 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 9 10 ...
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Desa VYM27PR - page 23
23 104675 OWNER’S MANUAL P AR TS LIST VYM27PR This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 20 of this manual. KEY NO. Part Number DESCRIPTION QTY. 1 104676-01 Log, Multi-Sided 1 2 103778-01 ODS Pilot (LP) 1 3 098249-01 ODS Nut 2 4 104592-02 Burner Out ...
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Desa VYM27PR - page 24
24 104675 UNVENTED PROP ANE/LP GAS LOG HEA TER V ANGUARD FLAME-MAX ® ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA International’s Parts Department at 1-800-972-7879 for referral information. You can also write to the ad- dress listed on the back page of this manual. MAN ...
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Desa VYM27PR - page 25
25 104675 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________ ...
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Desa VYM27PR - page 26
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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