Desa FLAME-MAX UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER manual

Save this manual for future reference. DESA INTERNA TIONAL UNVENTED (VENT -FREE) NA TURAL GAS LOG HEA TER 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[...]

2 103309 CONTENTS SECTION PAGE SAFETY INFORMA TION WARNING ICON G 001 W ARNINGS IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. WARNING[...]

3 103309 SAFETY INFORMA TION Continued WARNING ICON G 001 W ARNINGS Continued 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. If you smell gas • shut off gas supply • do not tr[...]

4 103309 PRODUCT IDENTIFICA TION Figure 1 - Product Identification Control Knob Back Log Base Assembly Piezo Ignitor Burner Crossover Log Front Log Flame-Max  Standard Oak Logs Flame-Max  Premium Golden Oak Logs Flame-Max  Premium Birch Log Control Knob Piezo Ignitor One Piece Log Set One Piece Log Set Control Knob Piezo Ignitor Base Assem[...]

5 103309 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, also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc. Batterymarch Pa[...]

6 103309 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. Unusually Tight Contruction; 2. Unconfined Space; 3. Confined Space. The information on pages 5 t[...]

7 103309 AIR FOR COMBUSTION AND VENTILA TION Continued 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 ventilatio[...]

8 103309 AIR FOR COMBUSTION AND VENTILA TION Continued W ARNING 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. Figure 3 - Ventilation Air from Outdoors[...]

9 103309 INST ALLING NOTICE A qualified service person must install heater. Follow all local codes. W ARNING 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. Creosote will ignite if highly heated. Inspect chimney flue for damage[...]

10 103309 LOG SIZING REQUIREMENTS Log Minimum Firebox Size Size Height Depth Front Width 18" 17" 14" 20" 24" 17" 14" 26" MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall Ceiling 18" and 24" 16" 42" INSTALLATION AND CLEARANCES (Vent-Free Operation Only) W ARNING Maint[...]

11 103309 INST ALLING Continued Continued NOTICE 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. Minimum N[...]

12 103309 INST ALLING 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[...]

13 103309 INST ALLING Continued Floor Clearances A. If installing appliance on the floor level, you must maintain the minimum distance of 14" to combustibles (see Figure 8). Figure 8 - Minimum Fireplace Clearances If Installed at Floor Level B. If combustible materials are less than 14" to the fireplace, you must install appliance at leas[...]

14 103309 INST ALLING 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. Th[...]

15 103309 INST ALLING Continued INSTALLING HEATER BASE ASSEMBLY WARNING ICON G 001 W ARNING 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 W ARNING If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor[...]

16 103309 INST ALLING Continued Heater Gas Regulator Flexible Gas Hose (if allowed by local codes) Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator Figure 12 - Attaching Base Assembly to Fireplace Floor Fitting Masonry Screw Bracket with Screw Holes Standard Oak Log Chassis Premium Model Chassis Masonry Screw Bracket with Screw Holes[...]

17 103309 INST ALLING Continued CONNECTING TO GAS SUPPLY NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. Installation Items Needed Before installing heater, make sure you have the items listed below. • piping (check local codes) • sealant (resistant to LP gas) • manual shutoff valve * • test gaug[...]

18 103309 Tee Joint Pipe Nipple Cap 3" Minimum Sediment Trap Gas Regulator From Gas Meter (5" W.C.** to 10.5" W.C. Pressure) A.G.A. Design-Certified Manual Shutoff Valve With 1/8" NPT Tap* Approved Flexible Gas Hose (if allowed by local codes) WARNING ICON G 001 CAUTION Avoid damage to regulator. Hold gas regulator with wrench w[...]

19 103309 Test Pressures Equal To or Less Than 1/2 PSIG 1. Close manual shutoff valve (see Figure 14). 2. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter. 3. Check all joints from gas meter to manual shutoff valve (see Figure 15). Apply mixture of liquid soap and water to gas joi[...]

20 103309 INST ALLING Continued WARNING ICON G 001 W ARNING 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. For Standard Oak Log Model Each log is marked with a number. These numbers will help you identify the log wh[...]

21 103309 INST ALLING Continued For Premium Models It is very important to install the logs exactly as instructed. Do not modify logs. Only use logs supplied with heater . 1. Place one-piece log set on grate to fit as illustrated in Figure 19. Make sure middle section at bottom of log set is seated into "U"-shaped cutout in center of chas[...]

22 103309 OPERA TING HEA TER FOR YOUR SAFETY READ BEFORE LIGHTING W ARNING 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. B. BEFORE LIGHTI[...]

23 103309 WARNING ICON G 001 W ARNING Do not operate heater between PILOT and HIGH positions. WARNING ICON G 001 CAUTION Do not try to adjust heating levels by using the manual shutoff valve. V ARIABLE CONTROL OPERA TION The variable control valve can be set to any heat setting and flame height desired, by simply turning the control knob until that[...]

24 103309 OPERA TING HEA TER Continued T O TURN OFF GAS T O APPLIANCE Shutting Off Heater 1. Press in and turn control knob clockwise Clockwise to the HIGH position. 2. Turn the control knob clockwise Clockwise to the PILOT position. 3. Press in control knob and turn clockwise Clockwise to the OFF Position. Shutting Off Burners Only (pilot stays li[...]

25 103309 CLEANING AND MAINTENANCE WARNING ICON G 001 W ARNING Turn off heater and let cool before cleaning. WARNING ICON G 001 CAUTION You must keep control areas, burner, and circulating air passage- ways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need mor[...]

26 103309 TROUBLE- SHOOTING Continued REMEDY 1. Turn on gas supply or open manual shutoff valve 2. Turn control knob to PILOT position 3. Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting operation until air is removed 5. Clean ODS/pilot (see Cleaning and Mainte- nance , page 25) or replace ODS/pil[...]

27 103309 OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial opera- tion Heater produces a whistling noise when burner is lit Moisture/condensation noticed on windows REMEDY 1. Contact local natural gas company 2. Clean burner (see Cleaning an[...]

28 103309 TROUBLE- SHOOTING Continued W ARNING 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 su[...]

29 103309 TECHNICAL SER VICE 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). SPECIFICA TIONS When gas pressure is too low • pilot will not stay lit • burners will have delayed ignition • heater will not prod[...]

30 103309 ILLUSTRA TED P ARTS BREAKDOWN Flame-Max  Standard Oak Log Models VYS18N and VYS24N 4 1 2 3 12 21 10 11 21 7 21 5 6 8 9 15 14 16 19 22 18 13 19 17 20-2 20-1 20 18 23[...]

31 103309 P ARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 29 of this manual. KEY PART NUMBER FOR NO. VYS18N VYS24N DESCRIPTION QTY. 1 102968-01 102968-02 Back Log (#1) 1 2 102969-01 102969-02 Front Log (#2) 1 3 102970-01 102970-02 Crossover Log[...]

32 103309 ILLUSTRA TED P ARTS BREAKDOWN Flame-Max  Premium Oak and Birch Log Models VYD24N and VYBD24N 5 21 11 12 13 21 8 21 21 6 7 10 9 16 15 17 19 2 18 14 19 3 20-2 20-1 20 18 4 1A 1B[...]

33 103309 KEY PART NUMBER FOR NO. VYD24N VYBD24N DESCRIPTION QTY. 1A 103334-01 – Log, Premium Oak 1 1B – 103335-01 Log, Premium Birch 1 2 098276-01 098276-01 Hex Head Plug, 1/8" NPT 1 3 098249-01 098249-01 Nut, M5 2 4 099553-01 099553-01 Pilot Shield 1 5 102774-01BR 102774-01BR Painted Base Assembly 1 6 102844-01 102844-01 Lower Bracket 1 [...]

34 103309 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 address listed on the back page of this manual. LAVA ROCK - GA6060 For all models. Order when additional rock is [...]

35 103309 NOTES _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ ____[...]

LIMITED WARRANTY VENT-FREE NATURAL 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. To make a claim under this[...]