Desa NATURAL GAS LOG HEATER - Manuals

Page 2 - CONTENTS; SECTION; SAFETY; WARNINGS; DANGER; Carbon monoxide poisoning may lead to death!; Natural Gas

2 101308 CONTENTS SECTION PAGE SAFETY INFORMATION WARNING ICON G 001 WARNINGS IMPORTANT: Read this owner’s manual carefully and completely beforetrying to assemble, operate, or service this heater. Improper use of thisheater can cause serious injury or death from burns, fire, explosion,electrical sh...

Page 3 - Continued

3 101308 SAFETY INFORMATION Continued WARNING ICON G 001 WARNINGS 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...

Page 5 - WARNING; Unconfined Space; PROVIDING ADEQUATE VENTILATION; Unusually Tight Construction; and

5 101308 AIR FOR COMBUSTION AND VENTILATION WARNING ICON G 001 WARNING This heater shall not be installed in a confined space unlessprovisions are provided for adequate combustion and ventilationair. Read the following instructions to insure proper fresh air forthis and other fuel-burning appliances...

Page 6 - Determining if You Have a Confined or Unconfined Space

6 101308 AIR FOR COMBUSTION AND VENTILATION 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 adjoin...

Page 7 - VENTILATION AIR; Ventilation Air From Inside Building; Figure 3 - Ventilation Air from Outdoors; Ventilation Air From Outdoors; Figure 2 - Ventilation Air from Inside Building

7 101308 AIR FOR COMBUSTION AND VENTILATION Continued WARNING ICON G 001 WARNING If the area in which the heater may be operated is smaller thanthat defined as an unconfined space, provide adequate combus-tion and ventilation air by one of the methods described in theNational Fuel Gas Code, ANSI Z22...

Page 8 - INSTALLING; Never install the heater; CHECK GAS TYPE

8 101308 INSTALLING NOTICE A qualified service person must install heater. Follow all local codes. WARNING ICON G 001 WARNING Before installing in a solid fuel burning fireplace, the chimney flueand firebox must be cleaned of soot, creosote, ashes and loose paintby a qualified chimney cleaner. Creos...

Page 9 - Minimum Wall and Ceiling Clearances (see Figure 4); should not be less than 16 inches.; MINIMUM FIREPLACE CLEARANCE

9 101308 INSTALLATION AND CLEARANCES (Vent-Free Operation Only) WARNING Maintain the minimum clearances. If you can, provide greater clear-ances from floor, ceiling, and adjoining wall. INSTALLING Continued LOG SIZING REQUIREMENTS Log Minimum Firebox Size Size Height Depth Front Width Rear Width 18&...

Page 10 - NOTICE; Installing; Minimum Non Combustible Material Clearances; If you cannot meet these minimum clearances, you must operate; Requirements for

10 101308 INSTALLING Continued NOTICE Manual control heaters may be used as a ventedproduct. If so, you must always run heater withchimney flue damper open. If running heater withdamper open, non-combustible material abovefireplace opening is not needed. Go to Installing Damper Clamp Accessory for V...

Page 11 - If Using Mantel; Mantel Clearances

11 101308 INSTALLING Continued Minimum Non Combustible Material Clearances If Using Mantel You must have non combustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inchthick. With sheet metal, you must have non combustib...

Page 12 - Floor Clearances

12 101308 INSTALLING Continued 14"Min. Combustible Material Non-Combustible Material 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 Lev...

Page 14 - CAUTION; Installation Items Needed; Hold gas regulator with wrench when connecting flexible gas hose.

14 101308 INSTALLING Continued INSTALLING HEATER BASE ASSEMBLY WARNING ICON G 001 WARNING You must secure this heater to fireplace floor. If not, heater will movewhen you adjust controls. Moving heater may cause a gas leak. WARNING ICON G 001 WARNING If installing in a sunken fireplace, special care...

Page 15 - Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator; Figure 12 - Attaching Mounting Brackets to Heater

15 101308 INSTALLING Continued Heater GasRegulator Flexible Gas Hose (ifallowed by local codes) Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator MountingBracket Masonry Screw Figure 12 - Attaching Mounting Brackets to Heater

Page 17 - Figure 13 - Gas Connection; CHECKING GAS CONNECTIONS; Pressure Testing gas Supply Piping system; Test Pressures In Excess Of 1/2 PSIG

17 101308 Tee Joint Pipe Nipple Cap 3" Minimum Sediment Trap GasRegulator From Gas Meter (5" W.C.** to 10.5" W.C. Pressure) A.G.A. Design-CertifiedManual Shutoff ValveWith 1/8" NPT Tap* Approved FlexibleGas Hose (if allowedby local codes) WARNING ICON G 001 CAUTION Avoid damage to re...

Page 18 - Test Pressures Equal To or Less Than 1/2 PSIG; Pressure Testing Heater Gas Connections; Figure 14 - Manual Shutoff Valve; Figure 15 - Checking Gas Joints

18 101308 3. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter. 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. Correct all leaks at once.6. Re-c...

Page 19 - INSTALLING LOGS

19 101308 Right FrontBranch (#5) Notches Left Front Branch (#4)(24" & 30" models)or Front Branch (#4)(18" Model) Notches INSTALLING Continued WARNING ICON G 001 WARNING Failure to position the parts in accordance with these diagrams orfailure to use only parts specifically approved w...

Page 20 - OPERATING; Controlled Models; FOR YOUR SAFETY READ BEFORE LIGHTING; LIGHTING INSTRUCTIONS; fireplace screen is closed before running heater.

20 101308 PILOT OFF LO HI OPERATING HEATER Thermostat- Controlled Models 1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is fully open. 3. Turn control knob clockwise Clockwise to the OFF position. Figure 20 - Control Knob and Ignitor Button Location Control Knob Ignito...

Page 21 - TO TURN OFF GAS TO APPLIANCE; Shutting Off Heater; Shutting Off Burners Only (pilot stays lit); THERMOSTAT CONTROL OPERATION

21 101308 OPERATING HEATER Thermostat- Controlled Models Continued TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise Clockwise to the OFF position. Shutting Off Burners Only (pilot stays lit) 1. Turn control knob clockwise Clockwise to the PILOT position. THERMOSTAT CON...

Page 22 - Models

22 101308 PILOT OFF LO HI OPERATING HEATER Manually-Controlled Models Control Knob Ignitor Button Figure 22 - Control Knob and Ignitor Button Location 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 informa...

Page 23 - MANUAL LIGHTING PROCEDURE

23 101308 OPERATING HEATER Manually-Controlled Models Continued 5. Press in control knob and turn counterclockwise C-clockwise to the PILOT position. Keep control knob pressed in for five (5) seconds (see Figure 22). Note: You may be running this heater for the first time after hooking up to gas sup...

Page 24 - Check pilot flame pattern and burner flame patterns often.; PILOT FLAME PATTERN; If pilot flame pattern is incorrect, as shown in Figure 25; FRONT BURNER FLAME PATTERN; If front burner flame pattern is incorrect, as shown in Figure 27

24 101308 INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 24 shows a correct pilot flame pattern. Figure 25 shows an incorrect pilot flamepattern. The incorrect pilot flame is not touching the thermocouple. This will cause thethermocouple to c...

Page 25 - Turn off heater and let cool before cleaning.; SHOOTING; REMEDY; ODS/PILOT AND BURNERS

25 101308 CLEANING AND MAINTENANCE WARNING ICON G 001 WARNING Turn off heater and let cool before cleaning. WARNING ICON G 001 CAUTION You must keep control areas, burners, and circulating air passage-ways of heater clean. Inspect these areas of heater before eachuse. Have heater inspected yearly by...

Page 28 - If you smell gas; Operating heater where impurities in air exist may create odors.; See Warning

28 101308 TROUBLE- SHOOTING Continued WARNING ICON G 001 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 n e i g h b o r ’ s p h o n e . F o l l...

Page 29 - For Masonry and

29 101308 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB For Masonry and Factory-built Metal Fireplace If your log set cycles to pilot, but the room temperature drops to a lower thanideal comfort level before the log set comes back on, you may want to reposi-tion the thermostat sensing bulb. The th...

Page 30 - Figure 33 - Installing Thermostat Sensing Bulb behind Glass Doors; Do not crimp capillary.; with the Capillary at the Bottom

30 101308 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB For Masonry and Factory-built Metal Fireplace Continued Adhesive-backedMounting Clip Figure 31 - Locating Thermostat Sensing Bulb on Masonry Fireplace ThermostatSensing Bulb If you have a factory-built metal fireplace, see Figure 32 for locat...

Page 31 - SPECIFICATIONS; Controlled; SERVICE

31 101308 TECHNICAL SERVICE You may have further questions about installation, operation, or troubleshooting.If so, contact DESA International’s Technical Service Department at1-800-DESA LOG (1-800-337-2564). 18" Thermostat- 24" Thermostat- 30" Thermostat-Controlled Controlled Controlled...

Page 32 - age for parts replaced under warranty.; Parts Under Warranty; Parts Not Under Warranty; When calling DESA International, have ready; REPLACEMENT

32 101308 Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original replacementpart(s), call DESA International’s Technical Service Department...

Page 33 - ACCESSORIES

33 101308 ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supplythese accessories, call DESA International’s Parts Department at 1-800-972-7879for information. You can also write to the address listed on the back page of thismanual. MANUAL SHUTOFFVALVE - GA5010 ...

Page 35 - PARTS LIST

35 101308 PARTS LIST Manually-Controlled Models This list contains replaceable parts used in your heater. When ordering parts, followthe instructions listed under Replacement Parts on page 32 of this manual. KEY PART NUMBER FOR NO. VL18N / CF18N VL24N/CF24N VL30N / CF30N DESCRIPTION QTY. 1 101337-01...

Page 38 - NOTES

Page 40 - KEEP THIS WARRANTY; WARRANTY INFORMATION; INTERNATIONAL

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 and five(5) years on stainless steel burners from the date of first purchase, provided that the product has been properly installed,oper...