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UNVENTED (VENT-FREE)
PROPANE GAS LOG HEATER
Manually Control Models Also Designed Certified as Vented Decorative Appliance
This appliance may be installed in an aftermarket* manufactured (mobile) home,
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
OWNER'S OPERATION AND INSTALLATION MANUAL
FLAME-MAX™
Standard Split
Combo Design
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 build-
ing.
• Immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions.
• If you cannot reach your gas sup-
plier, call the fire department.
— Installation and service must be per-
formed by a qualified installer, service
agency, or the gas supplier.
DESA INTERNATIONAL
where not prohibited by state or local codes.
18" and 24" Variable Manually-Controlled Models
Save this manual for future reference.
WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual for correct installa-
tion and operational procedures. For
assistance or additional information con-
sult a qualified installer, service agency,
or the gas supplier.
WARNING: This gas log set is for instal-
lation in a masonry solid fuel burning
fireplace, a U.L. listed manufactured
solid fuel burning fireplace or an AGA
design certified vent-free firebox listed
for use with these gas log models.
WARNING: This is an unvented gas-
fired heater. It uses air (oxygen) from
the room in which it is installed. Provi-
sions for adequate combustion and ven-
tilation air must be provided. Refer to
Air for Combustion and Ventilation sec-
tion in this manual.
®
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Table of Contents
Related Manuals for Desa 102783-01B
Summary of Contents for Desa 102783-01B
- Page 1 DESA INTERNATIONAL UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER Manually Control Models Also Designed Certified as Vented Decorative Appliance This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited by state or local codes. * Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer OWNER’S OPERATION AND INSTALLATION MANUAL...
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Page 2: Table Of Contents
CONTENTS SAFETY INFORMATION SECTION Safety Information ... 2 Product Identification ... 4 Local Codes ... 4 Unpacking ... 4 Product Features ... 5 Air for Combustion and Ventilation ... 5 Installing ... 9 Check Gas Type ... 9 Installation and Clearances (Vent-Free Operation Only) ... 10 Installing Damper Clamp Accessory for Vented Operation ... - Page 3 SAFETY INFORMATION Continued 102783 WARNINGS WARNING ICON G 001 WARNING: Any change to this heater or its controls can be dangerous. 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.
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Page 4: Product Identification
PRODUCT IDENTIFICATION LOCAL CODES UNPACKING Piezo Ignitor Base Assembly Control Knob Figure 1 - Flame-Max ™ Standard Split Combo 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, also known as NFPA 54*. -
Page 5: Product Features
PRODUCT FEATURES AIR FOR COMBUSTION VENTILATION 102783 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 realistic, dancing yellow flames. This heater is designed for vent-free operation with flue damper closed. State and local codes in some areas prohibit the use of vent-free heaters. - Page 6 AIR FOR COMBUSTION VENTILATION Continued PROVIDING ADEQUATE VENTILATION The following is exerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation. All spaces in homes fall into one of the three following ventilation classifications: 1.
- Page 7 AIR FOR COMBUSTION VENTILATION Continued 102783 DETERMINING 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.
- Page 8 AIR FOR COMBUSTION VENTILATION Continued If the area in which the heater may be operated is smaller than that defined as an unconfined space, provide adequate combus- tion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3. VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space.
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Page 9: Installing
INSTALLING 102783 A qualified service person must install heater. Follow all local codes. State or local codes may only allow operation of this appliance in a vented configuration. Check your state or local codes. WARNING ICON G 001 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 qualified chimney cleaner. -
Page 10: Installation And Clearances (Vent-Free Operation Only)
INSTALLING Continued INSTALLATION AND CLEARANCES (Vent-Free Operation Only) Maintain the minimum clearances. If you can, provide greater clear- ances from floor, ceiling, and adjoining wall. MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall 18” and 24" 16" LOG SIZING REQUIREMENTS Minimum Firebox Size Size Height... - Page 11 INSTALLING Continued 102783 Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, non-combustible material above fireplace opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 14.
- Page 12 INSTALLING Continued Minimum Non Combustible Material Clearances If Using Mantel You must have non combustible material(s) above the fireplace opening. Non combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non combustible material behind it. Non combustible material must extend at least 8 inches up (for all models).
- Page 13 INSTALLING Continued 102783 12" 10" 8" 6" 1 /2 " Minimum Non- Combustible Material 8" Min. Hood (GA6050, GA6052) Figure 7 - Minimum Mantel Clearances When Using Hood If your installation does not meet the above minimum clearances, you must: •...
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Page 14: Installing Damper Clamp Accessory For Vented Operation
INSTALLING Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Note: When used as a vented heater, appliance must be installed only in a solid- fuel burning fireplace with a working flue and constructed of non combustible material. If your heater is a manually controlled model, you may use this heater as a vented product. -
Page 15: Installing Heater Base Assembly
INSTALLING Continued 102783 INSTALLING HEATER BASE ASSEMBLY WARNING ICON G 001 You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak. WARNING ICON G 001 If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor to allow access to heater control panel. -
Page 16: Connecting To Gas Supply
INSTALLING Continued Figure 12 - Attaching Base Assembly to Fireplace Floor CONNECTING TO GAS SUPPLY A qualified service person must connect heater to gas supply. Follow all local codes. WARNING ICON Never connect heater directly to the propane supply. This heater requires an external regulator (not supplied). - Page 17 INSTALLING Continued 102783 The installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur.
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Page 18: Checking Gas Connections
INSTALLING Continued External Regulator Sediment WARNING ICON Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings. A.G.A. Design-Certified Manual Shutoff Valve From With 1/8" NPT Tap* (11" W.C.** to 14" W.C. Pressure) Tee Joint Pipe 3"... - Page 19 INSTALLING Continued 102783 3. Pressurize supply piping system by either using compressed air or opening propane supply tank valve. 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 5.
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Page 20: Installing Logs
INSTALLING Continued INSTALLING LOGS WARNING ICON G 001 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. Each log is marked with a number. These numbers will help you identify the log when installing. -
Page 21: Operating Heater
OPERATING HEATER 102783 FOR YOUR SAFETY READ BEFORE LIGHTING WARNING ICON G 001 If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. - Page 22 OPERATING HEATER Continued 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information on page 21. If you don’t smell gas, go to the next step. 5.
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Page 23: Inspecting Burners
OPERATING HEATER Continued INSPECTING BURNERS 102783 TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Press in and turn control knob clockwise 2. Turn the control knob clockwise 3. Press in control knob and turn clockwise Shutting Off Burners Only (pilot stays lit) 1. -
Page 24: Cleaning And Maintenance
CLEANING MAINTENANCE TROUBLE- SHOOTING Note: All troubleshooting items are listed in order of operation. WARNING ICON Turn off heater and let cool before cleaning. WARNING ICON You must keep control areas, burner, and circulating air passage- ways of heater clean. Inspect these areas of heater before each use. - Page 25 TROUBLE- SHOOTING Continued 102783 OBSERVED POSSIBLE PROBLEM CAUSE When ignitor button 1. Gas supply turned off or is pressed, there is manual shutoff valve spark at ODS/pilot closed but no ignition 2. Control knob not in PILOT position 3. Control knob not pressed in while in PILOT position 4.
- Page 26 TROUBLE- SHOOTING Continued OBSERVED POSSIBLE PROBLEM CAUSE Burner does not light 1. Inlet gas pressure is after ODS/pilot is lit too low 2. Burner orifice clogged 3. Burner orifice diameter is too small Delayed ignition 1. Manifold pressure is burner too low 2.
- Page 27 TROUBLE- SHOOTING Continued 102783 WARNING ICON G 001 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. •...
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Page 28: Technical Service
TECHNICAL SERVICE SPECIFICATIONS SERVICE HINTS You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-DESA LOG (1-800-337-2564). 18" Variable Manually- Controlled Btu (Variable) 16,000/27,000 Type Gas Propane Only Ignition Piezo Pressure Manifold 8.0"... -
Page 29: Replacement Parts
Usually, we will ask you to return the defective part to the factory. Parts Not Under Warranty Contact authorized dealers of this product. If they can’t supply original replace- ment part(s), call DESA International’s Parts Department at 1-800-972-7879 for referral information. When calling DESA International, have ready •... -
Page 30: Illustrated Parts Lists
ILLUSTRATED PARTS BREAKDOWN 20-2 20-1 102783... -
Page 31: Parts List
PARTS LIST VYS18P CFYS18P 102968-01 102968-01 102969-01 102969-01 102970-01 102970-01 102774-02BR 102774-02BR 102844-01 102844-01 102966-01 102966-01 098867-10 098867-10 102798-01 102798-01 102780-03 102780-03 099056-21 099056-21 102843-01 102843-01 102963-01 102963-01 102568-08 102568-08 098508-01 098508-01 098354-01 098354-01 102445-01 102445-01 098249-01 098249-01 099387-08 099387-08 098271-07 098271-07 099059-02... -
Page 32: Warranty Information
VENT-FREE PROPANE GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for three (3) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.