Instruction/ maintenance manual of the product UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER Desa
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Save this manual for future reference. DESA INTERNA TIONAL UNVENTED (VENT -FREE) PROP ANE GAS LOG HEA TER ® 18", 24", and 30" Log Sets Thermostat and Manually-Controlled Models (Manual.
2 101309 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.
3 101309 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.
4 101309 PRODUCT IDENTIFICA TION Front Log Control Knob Figure 1 - Vent-Free Gas Log Heater Piezo Ignitor Front Burner Rear Log Rear Burner Left Front Branch Right Front Branch Base Assembly LOCAL CODES Install and use heater with care. Follow all local codes.
5 101309 AIR FOR COMBUSTION AND VENTILA TION W ARNING This heater shall not be installed in a confined space unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.
6 101309 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.
7 101309 AIR FOR COMBUSTION AND VENTILA TION Continued WARNING ICON G001 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.
8 101309 INST ALLING NOTICE A qualified service person must install heater. Follow all local codes. WARNING ICON G 001 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.
9 101309 INST ALLING Continued INSTALLATION AND CLEARANCES (Vent-Free Operation Only) Figure 4 - Minimum Clearance to Wall and Ceiling Continued W ARNING Maintain the minimum clearances. If you can, provide greater clear- ances from floor, ceiling, and adjoining wall.
10 101309 Heat Resistant Material (A) INST ALLING 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.
11 101309 Minimum Non- Combustible Material Minimum Non- Combustible Material Height Distances to Underside of Mantel Top of Fireplace Opening Underside of Mantel Shelf 12" 8" (A) 20" 1.
12 101309 14" Min. Combustible Material Non-Combustible Material Hearth 5" Min. Combustible Material Minimum Non- Combustible Material 8" Min.
13 101309 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.
14 101309 INST ALLING Continued INSTALLING HEATER BASE ASSEMBLY WARNING ICON G 001 W ARNING If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor to allow access to heater control panel. This will insure adequate air flow and guard against soot- ing.
15 101309 INST ALLING Continued Mounting Bracket Masonry Screw Figure 12 - Attaching Mounting Brackets to Heater CONNECTING TO GAS SUPPLY NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. WARNING ICON G001 CAUTION Never connect heater directly to the propane supply.
16 101309 INST ALLING Continued 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.
17 101309 Tee Joint Pipe Nipple Cap 3" Minimum Sediment Trap Gas Regulator From External Regulator (11" W.C.** to 14" 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.
18 101309 ON POSITION OFF POSITION 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.
19 101309 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. Each log is marked with a number.
20 101309 OPERA TING HEA TER 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 21 - Control Knob and Ignitor Button Location Control Knob Ignitor Button 4.
21 101309 OPERA TING HEA TER Thermostat- Controlled Models Continued 5. Turn control knob counterclockwise C-clockwise to the PILOT position. Press in control knob for five (5) seconds (see Page 20). Note: You may be running this heater for the first time after hooking up to gas supply.
22 101309 OPERA TING HEA TER Manually-Controlled Models Control Knob Ignitor Button Figure 23 - 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 information above.
23 101309 OPERA TING HEA TER 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 23). Note: You may be running this heater for the first time after hooking up to gas supply.
24 101309 INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 25 shows a correct pilot flame pattern. Figure 26 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple.
25 101309 CLEANING AND MAINTENANCE WARNING ICON G001 W ARNING 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 each use.
26 101309 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.
27 101309 TROUBLE- SHOOTING Continued OBSERVED PROBLEM One or both burners do not light after ODS/pilot is lit Delayed ignition of one or both burners Burner backfiring during combustion Yellow flame .
28 101309 TROUBLE- SHOOTING Continued WARNING ICON G 001 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.
29 101309 OPTIONAL POSITIONING OF THERMOST A T SENSING BULB For Masonry and Factory-built Metal Fireplace If your log set cycles to pilot, but the room temperature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposi- tion the thermostat sensing bulb.
30 101309 OPTIONAL POSITIONING OF THERMOST A T SENSING BULB For Masonry and Factory-built Metal Fireplace Continued Adhesive-backed Mounting Clip Figure 32 - Locating Thermostat Sensing Bulb on Masonry Fireplace Thermostat Sensing Bulb If you hav e a factory-built metal f ireplace, see Figure 33 for location.
31 101309 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).
32 101309 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 replacement part(s), call DESA International’s Technical Service Department at 1-800-323-5190.
33 101309 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 information. You can also write to the address listed on the back page of this manual.
34 101309 ILLUSTRA TED P ARTS BREAKDOWN Manually-Controlled Models 6 7 8 9 10 11 8 8 27 13 12 13 14 15 16 18 17 19 20 21 22 23 24 25 26 27 6 28 29 30 7-1 7-2 10-1 10-2 1 2 3 4 5.
35 101309 P ARTS LIST Manually-Controlled Models This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 32 of this manual. KEY PART NUMBER FOR NO. VL18P/CF18P VL24P/CF24P VL30P/CF30P DESCRIPTION QTY.
36 101309 ILLUSTRA TED P ARTS BREAKDOWN Thermostat- Controlled Models 31 6 25 6 7 8 9 10 11 8 8 29 13 12 13 14 15 16 18 17 19 24 26 27 7-1 7-2 29 22 23 21 28 20 30 3 1 2 4 5 10-1 10-2.
37 101309 P ARTS LIST Thermostat- Controlled Models This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 32 of this manual. KEY PART NUMBER FOR NO. VL18PT/CF18PT VL24PT/CF24PT VL30PT/CF30PT DESCRIPTION QTY.
38 101309 NOTES.
39 101309 NOTES.
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.
An important point after buying a device Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER you will learn all the available features of the product, as well as information on its operation. The information that you get Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER will certainly help you make a decision on the purchase.
If you already are a holder of Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER.
However, one of the most important roles played by the user manual is to help in solving problems with Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
