Save this manual for future reference. Unvented (vent-free) natural gas log heater 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 an...
2 103515 contents section page safety information warning icon g 001 warnings 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...
3 103515 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...
4 103515 product identification figure 1 - product identification control knob back log base assembly piezo ignitor burner crossover log front log flame-max standard oak logs flame-max golden oak logs flame-max birch logs control knob piezo ignitor one piece log set one piece log set control knob pi...
5 103515 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...
6 103515 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 spac...
7 103515 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...
8 103515 warning 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 or appli- cable local codes. Air for c...
9 103515 warning never install the heater • in a bedroom or bathroom unless installed as a vented appli- ance (see page 14) • in a recreational vehicle • where curtains, furniture, clothing, or other flammable objects are less than 36 inches from the front, top, or sides of the heater • in high traf...
10 103515 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 carefully follow the instructions below. This will ensure safe installation into a masonry,...
11 103515 installing 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 a...
12 103515 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 combust...
13 103515 installing 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 firepl...
14 103515 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...
15 103515 installing continued installing heater base assembly warning icon g 001 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. Warning icon g 001 warning if installing in a sunken fireplace, special car...
16 103515 installing 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 golden oak ...
17 103515 installing 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 ...
18 103515 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. Ho...
19 103515 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)....
20 103515 installing continued warning icon g 001 warning 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 vintage oak log model each log is marked with a number. ...
21 103515 installing continued for golden oak or birch 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 ...
22 103515 operating heater for your safety read before lighting warning 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, foll...
23 103515 warning icon g 001 warning 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. Variable control operation the variable control valve can be set to any heat setting and flame height desired...
24 103515 operating heater continued to turn off gas to 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 posit...
25 103515 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, burner, and circulating air passage- ways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly b...
26 103515 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 cleani...
27 103515 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 na...
28 103515 technical service 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). Trouble- shooting continued warning if you smell gas • shut off gas supply. • do not try ...
29 103515 when gas pressure is too low • pilot will not stay lit • burners will have delayed ignition • heater will not produce specified heat when gas quality is bad • pilot will not stay lit • burners will produce flames and soot • heater will backfire when lit you may feel your gas pressure is to...
30 103515 illustrated parts breakdown flame-max vintage 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 103515 parts 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 fro...
32 103515 illustrated parts breakdown flame-max golden oak and birch log models vyd24n and vybd24n 4 20 10 11 12 20 7 20 20 5 6 9 8 15 14 16 18 2 17 13 18 3 19-2 19-1 19 17 1a 1b.
33 103515 parts 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. Vyd18n vybd18n vyd24n vybd24n vyd30n vybd30n description qty. 1a 103517-01 – 102785-01 – 10351...
34 103515 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 - ga606...
35 103515 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 a...
