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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
FLAME-MAX
Remote-Ready Models VYD18(N,P)RB, VYD24(N,P)RB and VYD30(N,P)RB
FLAME-MAX
Variable Manually-Controlled Models VYS18(N,P)B and VYS24(N,P)B
Also Design-Certified As Vented Decorative Appliances
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.
— WHAT TO DO IF YOU SMELL GAS
• 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.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Golden Oak Logs Shown
GOLDEN OAk LOG DESIGN
®
VINTAGE OAk LOG DESIGN
®
For more information, visit www.desatech.com
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Table of Contents
Related Manuals for Desa Flame-Max VYD24
Summary of Contents for Desa Flame-Max VYD24
- Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL FLAME-MAX Remote-Ready Models VYD18(N,P)RB, VYD24(N,P)RB and VYD30(N,P)RB FLAME-MAX Variable Manually-Controlled Models VYS18(N,P)B and VYS24(N,P)B Also Design-Certified As Vented Decorative Appliances 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.
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Page 2: Table Of Contents
Safety ... 2 Local Codes... 5 Product Identification ... 5 Optional Remote Control Accessories ... 5 Unpacking... 5 Air for Combustion and Ventilation ... 6 Product Features ... 6 Installation ... 8 Operation ... 18 Inspecting Burners... 23 WARNING: Improper installation, adjustment, alteration, service or maintenance can cause... - Page 3 WARNING: This product con- tains and/or generates chemicals known to the state of California to cause cancer or birth defects or other reproductive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, op- erate or service this fireplace. Improper use of this fireplace can cause serious injury or death from burns, fire, explo-...
- Page 4 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. 2. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only).
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Page 5: Local Codes
Always handle base assembly by grate. 2. Remove all protective packaging applied to logs and heater for shipment. 3. Check heater for any shipping damage. If heater is damaged call DESA Heating, LLC at 1-866-672-6040 for replacement parts before returning to dealer. www.desatech.com... -
Page 6: Air For Combustion And Ventilation
OPERATION 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 both realistic flames and glowing coals. This heater is designed for vent-free operation with flue damper closed. - Page 7 AIR FOR COMBUSTION AND VENTILATION Confined and Unconfined Space The National Fuel Gas Code, ANSI Z223.1/ NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m gregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic...
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Page 8: Installation
AIR FOR COMBUSTION AND VENTILATION 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 provide two permanent openings: one within 12" of the ceiling and one within 12"... - Page 9 WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a quali- fied chimney cleaner. Creosote will ignite if highly heated. A dirty chimney flue and firebox may cre- ate and distribute soot within the house.
- Page 10 LOG SIZING REQUIREMENTS Minimum Firebox Size Height Depth 18" 17" 14" 24" 17" 14" 30" 17" 14" * Measured at 14" depth. Minimum Clearances For Side Combustible Material, Side Wall and Ceiling A. Clearances from the side of the fireplace cabinet to any combustible material and wall should follow diagram in Figure 4.
- Page 11 If Using Mantel You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8 inches up (for all models).
- Page 12 FLOOR CLEARANCES A. If installing appliance on the floor level, you must maintain the minimum distance of 14" to combustibles (see Figure 8). B. If combustible materials are less than 14" to the fireplace, you must install appliance at least 5" above the combustible flooring (see Figure 9).
- Page 13 INSTALLING HEATER BASE ASSEMBLY WARNING: You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak or log misplacement. WARNING: If installing in a sunken fireplace, special care is needed.
- Page 14 Figure 13 - Attaching Base to Fireplace Floor (Variable Manually-Controlled Models Only) CONNECTING TO GAS SUPPLY WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pressure regulator. WARNING: A qualified ser- vice person must connect heater to gas supply.
- Page 15 Installation must include an equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 15 or 16, depending on your model). IMPORTANT: Install equipment shutoff valve in an accessible location.
- Page 16 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 detec- tion fluid to all joints.
- Page 17 PRESSURE TESTING HEATER GAS CONNECTIONS 1. Open equipment shutoff valve (see Figure 17, page 16). 2. Open main gas valve located on or near gas meter for natural gas or open pro- pane/LP supply tank valve. 3. Make sure control knob of heater is in the OFF position.
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Page 18: Operation
2. Place front log #2 against front grate prongs as shown in Figure 21, page 17. 3. Place crossover log #3 on top of front and back logs as shown in Figure 21, page 17. 4. Place lava rock around base of heater if desired. - Page 19 MANUALLY-CONTROLLED MODELS Note: Home owners generally prefer to oper- ate their heater with the chimney damper closed. This will put all the heat into the room. However, there may be times you will desire the full flames of the HI heat setting but will find the heat output excessive.
- Page 20 MANUALLY-CONTROLLED MODELS Ignitor Electrode Thermocouple (Note: Appearance of pilot assembly will vary by model.) Figure 24 - Pilot FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result causing property damage, per- sonal injury or loss of life.
- Page 21 WARNING: Damper handle will be hot if heater has been running. 1. STOP! Read the safety information, page 20. 2. Make sure equipment shutoff valve is fully open. 3. Set selector switch in the OFF position. WARNING: Burners will come on automatically within one minute when the selector switch is in the ON position after the pilot is lit.
- Page 22 Pilot Ignitor Burner Electrode Figure 26 - Pilot Figure 27 - Pilot (Propane/LP) MANUAL LIGHTING PROCEDURE 1. Follow steps 1 through 6 under Lighting Instructions, pages 20. 2. Depress control knob and light pilot with match. 3. Keep control knob pressed in for 30 seconds after lighting pilot.
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Page 23: Inspecting Burners
Auto (Thermostatic) Mode 1. Press the POWER and LOCK buttons together to turn on the hand-held remote control. 2. Press AUTO button to select this mode. 3. Set the desired room temperature by pressing the TEMP + or - buttons. 4. -
Page 24: Cleaning And Maintenance
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 block- age and clean if needed. Blocked air holes will create soot. -
Page 25: Replacement Parts
PARTS NOT UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating, LLC at 1-866-672-6040 for referral information. When calling DESA Heating, LLC, have ready • model number of your heater •... -
Page 26: 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. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no spark... - Page 27 OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is released Burner does not light after ODS/pilot is lit Delayed ignition of one or both burners Burner backfiring during combustion 113093-01H TROUBLESHOOTING Continued POSSIBLE CAUSE 1. Control knob not fully pressed in 2.
- Page 28 OBSERVED PROBLEM Slight smoke or odor during initial operation Heater produces a whistling noise when burners are lit White powder residue form- ing within burner box or on adjacent walls or furniture Moisture/condensation no- ticed on windows Dark residue on logs inside of their fireplace Note: Af- ter removing all causes of residue deposits, completely...
- Page 29 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. Fol- low the gas supplier’s instructions.
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Page 30: Specifications
You may have further questions about instal- lation, operation or troubleshooting. If so, con- tact DESA Heating, LLC at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready. You can also visit DESA Heating, LLC’s web site at www.desatech.com. www.desatech.com 113093-01H... -
Page 31: 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 referral information. You can also write to the address listed on the back page of this manual. -
Page 32: Parts
PARTS VARIABLE MANUALLY-CONTROLLED BASE ASSEMBLY FOR FLAME-MAx VINTAGE OAK LOG MODELS VYS18PB, VYS18NB, VYS24PB AND VYS24NB www.desatech.com 113093-01H... - Page 33 VARIABLE MANUALLY-CONTROLLED BASE ASSEMBLY FOR FLAME-MAx VINTAGE OAK LOG MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. PART NO DESCRIPTION 122078-01 One Piece Log Set 122078-02 One Piece Log Set 098276-01 Hex Head Plug, 1/8"...
- Page 34 REMOTE-READY BASE ASSEMBLY FOR FLAME-MAx GOLDEN OAK LOG MODELS VYD18PRB, VYD18NRB, VYD24PRB, VYD24NRB, VYD30PRB AND VYD30NRB PARTS Parts 23 and 24 Natural Gas Only www.desatech.com 113093-01H...
- Page 35 REMOTE-READY BASE ASSEMBLY FOR FLAME-MAx GOLDEN OAK LOG MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. NO. PART NO. DESCRIPTION 122081-02 Front Log 122081-05 Front Log 113549-03...
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Page 36: Warranty
This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty excludes any and all other warranties, express or implied, written or verbal and limits the duration of any and all implied warranties, including warranties of merchantability and fitness for a particular purpose to four (4) years on new products and 30 days on factory reconditioned products from the date of first purchase.