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Desa HRB3624 User's Manual

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1. SH q Figure 41 Pilot Inlet Air Hole Your pilot may vary from pilot shown LOGS Ifyou remove logs for cleaning refer to Install ing Logs page 18 to properly replace logs Replacelog s if broken or chipped dime sized or larger MAIN BURNER Periodically inspect all burner flame holes with the heater running All slotted burner flame holes should be open with yellow flame present round burner flame holes should be open with a small blue flame present Some burner flame holes may become blocked by debris or rust with no flame present If so turn off heater and let cool Remove blockage blocked burner flame holes will create soot WIRING DIAGRAM Remote Ready Models Only XD AS Thermopile 119426 01A www desatech com 27 TROUBLESHOOTING WARNING Turn off heater and let cool before servicing Only a qualified service person should service and repair heater CAUTION Never use a wire needle or similar object to clean ODS pilot This can damage ODS pilot unit Note troubleshooting items are listed in order of operation OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed there is no spark at ODS pilot 1 Ze uy Ignitor electrode not nected to ignitor cable Ignitor cable pinched or wet Broken ignitor cable Bad ignitor Ign
2. 2 Product Identification m 5 Local COGS AAA eers 5 Optional Remote Control Accessories 5 Unpacking iiec rene ripetere dad 5 Product Features Air For Combustion and Ventilation lc f 8 Operating 20 Inspecting 25 Cleaning and 26 Wiring Diagram curreret recenter 27 Troubleshiooting iie 28 Optional Positioning of Thermostat Sensing Bulb sei sce e ede 32 SpecificallOns centes 33 Illustrated Parts Breakdown and Parts List 34 Semice PMS ecr Technical Service Replacement Parts Accessories Warranty Information SAFETY INFORMATION WARNING Improper in stallation adjustment al teration service or main tenance can cause injury or property damage Refer to this manual for correct installation and operation al procedures For assis tance or additional infor mation consult a qualified installer service agency or the gas supplier WARNING This appliance is for installation only in a solid fuel burning mason ry or UL127 factory built fireplace or in a listed vent less firebox enclosure It is design certified for these installations inaccordance with ANSI Z21 11 2 Excep tion Do n
3. Figure 38 Correct Front Burner Flame Pattern Yellow Tipping At Top of Blue Flame Figure 39 Incorrect Front Burner Flame Pattern CLEANING AND MAINTENANCE AX WARNING Turn off heater and let cool before cleaning AX CAUTION You must keep control areas burners and circulating air passageways of heater clean Inspect these areas of heater before each use Have heater inspected yearly by a qualified service person Heater may need more frequent cleaning due to excessive lint from carpeting pet hair bedding material etc WARNING Failure to keep the primary air opening s of the burner s clean may resultin sooting and property damage BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE The primary air inlet holes allow the proper amount of air to mix with the gas This provides a clean burning flame Keep these holes clear of dust dirt lint and pet hair Clean these air inlet holes prior to each heating season Blocked air holes will create soot We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To clean these parts we recommend using compressed air no greater than 30 PSI Your local computer store hardware store or home center may carry compressed air in a can You can use a vacuum cleaner in
4. Heater base assembly becomes very hot when running heater Keep children and adults away from hot surface to avoid burns or clothing ignition Heater will remain hot for a time after shutdown Allow surface to cool before touching Carefully supervise young chil dren when they are in the room with heater When using the hand held remote accessory Remote Ready Models Only keep selec tor switch in the OFF position to prevent children from turning on burners with remote You must operate this heater with the fireplace screen and hood in place Make sure fire place screen and hood are in place before running heater Keep the appliance area clear and free from combustible ma terials gasoline and other flam mable vapors and liquids www desatech com SAFETY INFORMATION 11 Do not run heater Continued where flammable liquids or vapors are used or stored 1 This appliance is only for use with the type of under dusty conditions gas indicated on the rating plate This appliance 12 Do not use this heater to cook food or burn is not convertible for use with other gases paper or other objects 2 Do not place propane LP supply tank s in 3 Do notuse heater if any part has been exposed side any structure Locate propane LP supply to or under water Immediately call a qualified tank s outdoors propane LP units only service technician to inspect the room heater 3 If you
5. Terminal Wires Battery Housing 9 Volt Battery Figure 24 Installing Battery in Hand Held Remote Control Unit INSTALLING LOGS A WARNING Failure to posi tion 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 It is very important to install these logs exactly as instructed Do not modify logs Only use logs supplied with heater VUL Model Logs Only 1 Place bottom log in center of the base assem bly as shown in Figure 25 page 19 2 Rest rear log in back corner sections of base assembly as shown in Figure 25 page 19 Make sure log is completely vertical and not leaning in toward burner where the flame will touch the log 3 Position front right log against right side of grate prongs see Figure 25 page 19 4 Position front left log against left side of grate prongs see Figure 25 page 19 5 Place middle right log over front right and bottom logs as shown in Figure 26 page 19 Be sure hole in middle right log seats over pin in bottom log 18 www desatech com 119426 01A INSTALLATION CRB and HRB Model Logs Only 1 Continued Place bottom log in center of the base assem bly as shown in Figure 27 6 Place middle left log over front left and gt bottom logs as show in Figure
6. 1 Turn control knob clockwise Z to the OFF position 2a Set selector switch in the OFF position 2b If Using Optional Hand Held Remote Set selector switch in the OFF position to prevent draining battery Shutting Off Burners Only pilot stays lit You may shut off the burners and keep the pilot lit by doing one of the following 1 Turn control knob clockwise Z to the PILOT position 2 Useremote control manual OFF button 3 Set selector switch in the OFF position 119426 01A www desatech com 23 OPERATING HEATER Continued MANUAL LIGHTING PROCEDURE Follow steps 1 through 6 under Lighting Instructions pages 22 and 23 2 Depress control knob and light pilot with match 3 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Now follow steps 9 through 11 Lighting Instructions page 23 OPTIONAL HAND HELD REMOTE OPERATION Note All remote control accessories must be purchased separately see Accessories page 42 Follow instructions included with the remote control NOTICE You must light the pilot before using the hand held re mote control unit See Lighting Instructions on page 22 After lighting let pilot flame burn for about one minute Turn control knob to ON posi tion Adjust flame adjustment knob anywhere between HI and LO Slide the selector switch to the REMOTE position see Figure 33 Note The burner may light if
7. You can open the chimney damper if you have one fully or partially to release some of the heat Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the WARNING Damper handle will be hot if heater has been running control system and any gas control which has been under water 1 STOP Read the safety information col umn 1 2 Make sure equipment shutoff valve is fully open 3 Turn control knob clockwise Z to the OFF position 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 column 1 If you don t smell gas go to the next step 20 www desatech com 119426 01A OPERATING HEATER Continued 5 Turn control knob counterclockwise to the PILOT position Press in control knob for five 5 seconds see Figure 28 Note You may be running this heater for the first time after hooking up to gas sup ply If so the control knob may need to be pressed in for 30 seconds or more This will allow air to bleed from the gas system 6 With control knob pressed in press and release ignitor button This will light pilot The pilot is attached to the front burner If needed keep pressing ignitor button until pilot lights Note If pilot does not stay lit contact a qualified service pe
8. test gauge connection Purchase the optional CSA design certified equipment shutoff valve from your dealer See Accessories page 42 For propane LP units 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 of water If you do not reduce incoming gas pres sure heater regulator damage could occur Install external regulator with the vent pointing down as shown in Figure 14 Pointing the vent down protects it from freezing rain or sleet CAUTION Use only new black iron or steel pipe In ternally tinned copper tubing may be used in certain areas Check your local codes Use pipe of 1 2 diameter or greater to allow proper gas volume to heater If pipe is too small undue loss of volume will occur Propane LP Supply Tank External Regulator Vent Pointing Down xe Figure 14 External Regulator With Vent Pointing Down 14 www desatech com 119426 01A INSTALLATION Continued Installation must include an equipment shutoff valve union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be upstream from heater see Figures 15 or 16 depending on your model IMPORTANT Install equipment shutoff valve in an accessible location The equipment shutoff valve is for turning on or shutting off the gas to the appliance Ch
9. 26 Be sure hole in middle left log seats over pin in front left log Rest rear log in back corner sections of base as sembly as shown in Figure 27 Make sure log is completely vertical and not leaning in toward burner where the flame will touch the log Front Left Log 3 Position front log as shown in Figure 27 Rear Log making sure the grooves in the bottom of the log fit over the grate prongs Front Log Front Right Log Figure 25 Installing VUL Model Log Sets Base Assembly Note Your appliance may vary from model shown ASSEMDIY but log placement will be the same Figure 27 Installing CRB and HRB Model Log Sets Middle Left Log Middle Note Your appliance may vary from model shown Right but log placement will be the same Pin on Front Left Log Figure 26 Installing VUL Model Log Sets 119426 01A www desatech com 19 LIGHTING INSTRUCTIONS OPERATING HEATER THERMOSTAT CONTROLLED MODELS A WARNING f fireplace has glass doors never operate this heater with glass doors closed If you op FOR YOUR SAFETY READ BEFORE LIGHTING Ad WARNING If you do not fol low these instructions exactly a fire or explosion may result causing property damage per sonal injury or loss of life erate heater with doors closed heat buildup inside fireplace will cause glass to burst Make surethere are no obstructions across openings of fireplace You must ope
10. Hr Gas furnace Btu Hr Vented gas heater Btu Hr Gas fireplace logs Btu Hr Other gas appliances Btu Hr Total Btu Hr Do not include direct vent gas appliances Di rect vent draws combustion air from the outdoors and vents to the outdoors Example Gas water heater 40 000 Btu Hr Vent free fireplace 330000 Btu Hr Total 73000 Btu Hr 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used Btu Hr maximum the space can support Btu Hr actual amount of Btu Hr used 51 200 Btu Hr maximum the space can support 73 000 Btu Hr actual amount of Btu Hr used The space in the above example is a confined space because the actual Btu Hr used is more than the maxi mum Btu Hr the space can support You must provide additional fresh air Your options are as follows Example A Rework worksheet adding the space of an adjoin ing room If the extra space provides an unconfined space remove door to adjoining room or add ventilation grills between rooms See Ventilation Air From Inside Building B Ventroom directly to the outdoors See Ventila tion Air From Outdoors page 8 C Install a lower Btu Hr fireplace if lower Btu Hr size makes room unconfined If the actual Btu Hr used is less than the maximum Btu Hr the space can support the space is an un confined space You will need no additional fresh air ventilation A WARNING If the area in which the heater may be oper ate
11. REMOTE CONTROL ACCESSORIES There are four optional remote controls that can be purchased separately for Remote Ready Models Only wall switch hand held ON OFF remote wallthermostat hand held thermostat remote See Accessories page 42 The wall thermostat or hand held thermostat may not be used where vented decorative listing is required PRODUCT FEATURES 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 both realistic flames and glowing coals This heater is designed for vent free operation with flue damper closed It has been tested and approved to ANSI Z21 11 2 standard for unvented heaters State and local codes in some areas prohibit the use of vent free heaters This heater may also be operated as a vented decorative ANSIZ21 60 product by opening the flue damper Non Thermostat Models Only SAFETY DEVICE This heater has a pilot with an Oxygen Deple tion Sensing ODS safety shutoff system The ODS pilot is a required feature for vent free room heaters The ODS pilot shuts off the heater if there is not enough fresh air ELECTRONIC IGNITION SYSTEM This heater has an electronic ignitor to light heater fuel supply 119426 01A www desatech com 5 AIR FOR COMBUSTION AND VENTILATION AX WARNING This heater shall not be installed in a confined space or unusually tight construc tion unless provis
12. Regulator Sediment Trap Figure 15 Gas Connection Thermostatically Controlled Models Only CSA Design Certified Equipment Shutoff Valve PROPANE LP With 1 8 NPT Tap From External Regulator 11 W C to 14 W C Pressure NATURAL From Gas Meter Pipe Cap Tee 5 W C Nipple Joint to 10 5 Sediment Trap piece Approved Flexible Gas Hose if allowed by local Gas Control Figure 16 Gas Connection Remote Ready Models Only Purchase the optional CSA design certified equipment shutoff valve from your dealer See Accessories page 42 Minimum inlet pressure for purpose of input adjustment 119426 01A www desatech com 15 INSTALLATION Continued CHECKING GAS CONNECTIONS WARNING Testall gas piping and connections internal and external to unit for leaks after installing or servicing Correct all leaks at once AX WARNING Never use an open flame to check for a leak Apply anoncorrosive leak detec tion fluid to all joints Bubbles forming show a leak Correct all leaks at once CAUTION Make sure exter nal regulator has been installed between propane LP supply and heater See guidelines un der Connecting to Gas Supply page 14 PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1 2 PSIG 3 5 kPa 1 Disconnect appliance with its appliance main gas valve control valve and equipment shutoff val
13. Turn Off Gas to Appli ance page 21 Thermostatically Controlled Models or page 23 Remote Ready Models see Troubleshooting page 28 Note The pilot flame on natural gas units will have a slight curve but flame should be blue and have no yellow or orange color Thermocouple Pilot Burner Thermocouple Figure 36 Correct Pilot Flame Pattern Your pilot may vary from pilots shown Thermocouple Pilot Burner Thermocouple Figure 37 Incorrect Pilot Flame Pattern Your pilot may vary from pilots shown 119426 01A www desatech com 25 INSPECTING BURNERS Continued FRONT BURNER FLAME PATTERN Figure 38 shows correct front burner flame pat tern Figure 39 shows incorrect front burner flame pattern The incorrect burner flame pattern shows yellow tipping at top of blue flame WARNING If yellow tipping occurs your heater could pro duce increased levels of carbon monoxide If front burner flame pattern shows yellow tipping follow instructions at bottom of this page Yellow flame on rear burner is normal NOTICE Do not mistake orange flames with yellow tipping Dirt or other fine particles are burned by heater causing brief patches of orange flame If front burner flame pattern is incorrect as shown in Figure 39 turn heater off see To Turn Off Gas to Appli ance page 21 Thermostat Controlled Models or page 23 Remote Ready Models see Troubleshooting page 28
14. W C Inlet Gas Pressure in of water Max 14 W C Min 11 W C VUL18NT Rating Variable 19 000 28 000 Btu Hr Type Gas Natural Ignition Electronic Manifold Pressure 3 4 W C Inlet Gas Pressure in of water Max 10 5 W C Min 5 W C VUL24PT VUL30PT HRB3624PT Rating Variable 25 000 36 000 Btu Hr Type Gas Propane LP Ignition Electronic Manifold Pressure 7 9 W C Inlet Gas Pressure in of water Max 14 W C Min 11 W C VUL24NT VULSONT HRB3624NT Rating Variable 25 000 36 000 Btu Hr Type Gas Natural Ignition Electronic Manifold Pressure 3 4 W C Inlet Gas Pressure in of water Max 10 5 W C Min 5 W C For purpose of input adjustment Rating Variable 19 000 30 000 Btu Hr Type Gas Propane LP Ignition Electronic Manifold Pressure 7 9 W C nlet Gas Pressure in of water Max 14 W C Min 11 W C VUL18NR CRB2618NR Rating Variable 19 000 28 000 Btu Hr Type Gas Natural Ignition Electronic Manifold Pressure 3 4 W C nlet Gas Pressure in of water Max 10 5 W C Min 5 W C VUL24PR VUL30PR CRB3624PR CRB3630PR HRB3924PR HRB3930PR Rating Variable 25 000 36 000 Btu Hr Type Gas Propane LP Ignition Electronic Manifold Pressure 7 9 W C nlet Gas Pressure in of water Max 14 W C Min 11 W C VUL24NR VUL30NR CRB3624NR CRB3630NR HRB3924NR HRB3930NR Rating V
15. hand held remote was on when selector switch was last turned off You can now turn the burner on and off with the hand held remote control unit IMPORTANT Do not leave the selector switch in the REMOTE or ON position when the pilot is not lit This will drain the battery Flame Adjustment Control Knob in Knob On a OFF REMOTE Selector Toggle Switch Optional Hand Held Remote Control Figure 33 Setting the Selector switch Control Knob and Flame Adjustment Knob for Remote Operation ON OFF SERIES MODEL HRC100 Hold the control button on the hand held remote until burner turns on Hold the control button again until burner turns off see Figure 34 TO LOCK press both buttons on hand held remote control until light stops flashing Hand held remote control is now locked If the fire is on it will be turned off automatically In the locked state the light will not light up when any button is pressed TO UNLOCK press both buttons together on hand held remote control until the light stops flashing The hand held remote is now unlocked Indicator Light Control Butt nl utton CNN Figure 34 On Off Hand Held Remote Control Unit THERMOSTAT SERIES MODEL HRC200 The hand held remote can be operated using either the manual mode MANU or thermo static mode AUTO see Figure 35 To select Fahrenheit Centigrade mode display carefully press the C F mode button with the en
16. moisture to the air Although this is beneficial installing heater inrooms without enough ventilation air may cause mildew to form from too much moisture See Air for Combustion and Ventilation page 6 CHECK GAS TYPE Use the correct type of gas natural or propane LP If your gas supply is not the correct gas type do not install heater Call dealer where you bought heater for proper type heater LOG SIZING REQUIREMENTS Minimum Firebox Size Log Front Rear Size Height Depth Width Width 18 17 14 20 14 24 477 14 26 18 30 17 14 32 22 AX WARNING This appliance is equipped for natural or pro pane LP gas Field conversion is not permitted INSTALLATION AND CLEARANCES FOR VENT FREE OPERATION AX WARNING Maintain the minimum clearances If you can provide greater clearances from floor ceiling and adjoining wall MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size 18 24 30 Side Wall 16 Ceiling 42 Floor 5 Measured at 14 depth Carefully follow the instructions below This will ensure safe installation into a masonry UL127 listed manufactured fireplace or listed vent free firebox Minimum Clearances For Side Combustible Material Side Wall and Ceiling A Clearances from the side of the fireplace cabinet to any combustible material and wall should follow diagram in Figure 4 Example The face of a mant
17. return the part to the factory PARTS NOT UNDER WARRANTY Contact authorized dealers of this product If they can t supply original replacement part s call DESA Heating Products at 1 866 672 6040 for referral information When calling DESA Heating Products have ready model number of your heater the replacement part number ACCESSORIES Purchase these heater accessories from your local dealer If they can not supply these accessories call DESA Heating Products at 1 866 672 6040 for referral information You can also write to the address listed on the back page of this manual EQUIPMENT SHUTOFF VALVE GA5010 For all models Equipment shutoff valve with 1 8 NPT tap Fits 1 2 NPT pipe FIREPLACE HOOD Black GA6050 Brass GA6052 Antique Brass GA6053 For all models Helps deflect heat away from mantel or wall above fireplace Fits openings 28 to 48 wide 42 www desatech com 119426 01A ACCESSORIES Continued RECEIVER AND HAND HELD THERMOSTAT REMOTE CONTROL KIT HRC200 For all Remote Ready Models Allows the fire place to be operated in a manually or thermostati cally controlled mode You can turn the fireplace on and off without ever leaving the comfort of your easy chair A wall mount docking station is included RECEIVER AND HAND HELD REMOTE CONTROL KIT HRC100 For all Remote Ready Models Allows the fire place to be turned on and off by using a hand held remote contro
18. smell gas and to replace any part of the control system shut off gas supply and any gas control which has been under do not try to light any appliance water e do not touch any electrical switch donotuse 14 Do not operate heater if any log is broken Do any phone in your building not operate heater if a log is chipped dime immediately call your gas supplier from a sized or larger neighbor s phone Follow the gas supplier s 15 Turn heater off and let cool before servicing instructions installing or repairing Make sure the selector if you cannot reach your gas supplier call switch is in the OFF position Remote Ready the fire department Models Only Only a qualified service person 4 This heater shall not be installed in a bedroom should install service or repair heater or bathroom unless installed as a vented appli 16 Make sure the selector switch is in the OFF ance See Installing Damper Clamp Accessory position when you are away from home for for Vented Operation page 12 Remote Ready long periods of time Remote Ready Models Models Only Only 5 Before installing in a solid fuel burning 17 Remote ready heaters must not be connected fireplace the chimney flue and firebox must to any external electrical source be cleaned of soot creosote ashes and loose g Operating heater above elevations of 4 500 paint by a qualified chimney cleaner Creosote feet may cause pilot outage will ignite if highly heated A dirty chimney 1
19. the blow position If using com pressed air in a can please follow the directions on the can If you don t follow directions on the can you could damage the pilot assembly 1 Shut off the unit including the pilot Allow the unit to cool for at least thirty minutes Inspect burner pilot and primary air inlet holes on injector holder for dust and dirt see Figure 40 page 27 Blow air through the ports slots and holes in the burner 26 www desatech com 119426 01A CLEANING AND MAINTENANCE Continued 4 Check the injector holder located at the end of the burner tube again Remove any large particles of dust dirt lint or pet hair with a soft cloth or vacuum cleaner nozzle 5 Blow air into the primary air holes on the injector holder 6 Incaseany large clumps of dust have now been pushed into the burner repeat steps 3 and 4 Clean the pilot assembly also A yellow tip on the pilot flame indicates dust and dirt in the pilot as sembly There is a small pilot air inlet hole about 2 from where the pilot flame comes out of the pilot assembly see Figure 41 With the unit off lightly blow air through the air inlet hole You may blow through a drinking straw if compressed air is not available Injector Holder Ports Slots Burner Tube Primary Air Inlet Holes Figure 40 Injector Holder On Outlet Burner Tube sa B Pilot Air Inlet Hole Pilot Assembly
20. the room temperature at an ideal comfort level for most fireplace applications For positioning the thermostat sensing bulb elsewhere an adhesive backed mounting clip is available see Figure 42 Tools needed 5 16 hex driver or socket 1 Locate the gas valve assembly and thermostat sensing bulb see Figure 43 2 With 5 16 hex driver or socket loosen the thermostat screw Carefully slide the thermo stat sensing bulb out of the retaining clamp see Figure 44 Note Do not remove the screw Make sure you tighten the screw after removing the thermostat sensing bulb IMPORTANT Do not force or bend the thermostat sensing bulb or capillary Figure 42 Adhesive backed Mounting Clip Unit Will Differ From Illustration Gas Valve Assembly Thermostat Sensing Bulb Figure 43 Location of Gas Valve Assembly and Thermostat Sensing Bulb 3 The thermostat sensing bulb may be located to the lower right front side of fireplace De termine location of sensing bulb but do not mount sensing bulb until step 4 If you have a masonry fireplace see Figure 45 for location If you have a factory built metal fireplace see Figure 46 for location If your fireplace has glass doors position sensing bulb directly behind door gap on right bottom side see Figure 47 Sy C o Capillary Unit Will Differ From Illustration Thermostat Sensing Bulb Y Figure 44 Removing Thermostat Sensing Bu
21. 0 Lava Rock 111910 01 Thermostat Remote Kit Not a field replaceable part e o gt P m M B M H N N EM Ro sa BM RD 119426 01A www desatech com 41 SERVICE HINTS When Gas Pressure Is Too Low pilot will not stay lit burners will have delayed ignition heater will not produce specified heat propane LP gas supply may be low You may feel your gas pressure is too low If so con tact your local propane LP or natural gas supplier TECHNICAL SERVICE You may have further questions about installation operation or troubleshooting If so contact DESA Heating Products Technical Service Department at 1 866 672 6040 When calling please have your model and serial numbers of your heater ready You can also visit DESA Heating Products techni cal services web site at www desatech com REPLACEMENT PARTS Note Use only original replacement parts This will protect your warranty coverage 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 Heating Products Technical Service Department at 1 866 672 6040 When calling DESA Heating Products have ready your name your address model and serial numbers of your heater how heater was malfunctioning type of gas used propane LP or natural gas purchase date Usually we will ask you to
22. 3778 01 O D S Pilot Propane LP Gas 6 112713 01 Pilot Bracket Natural Gas 112713 03 Pilot Bracket Propane LP Gas 7 098249 01 Nut ODS o o 8 M11084 26 Screw i gt 9 112782 01 Air Deflactor Bracket 112782 02 Air Deflactor Bracket j F 10 101480 12 Jumper Wire 11 101004 11 Rear Burner Injector Natural i 101004 10 Rear Burner Injector 101004 04 Rear Burner Injector Natural m uc 101004 02 Rear Burner Injector Propane LP ID 12 101004 11 Front Burner Injector Natural i 101004 10 Front Burner Injector Propane LP 101004 08 Front Burner Injector Natural Dob 101004 06 Front Burner Injector Propane LP aD 13 112708 01 Remote Burner Tube 14 12461 26 Screw 15 099918 02 Pilot Regulator Natural Gas 16 099387 12 Pilot Tube Natural Gas 099387 09 Pilot Tube Propane LP 17 098264 02 Male Fitting 18 103781 01 Gas Control Valve NG 103781 02 Gas Control Valve LP 19 103784 01 Control Knob Extension 20 103784 02 Flame Adjustment Knob Extension 21 111173 01 Remote Valve Bracket 22 112715 01 Remote Knob Heat Shield 23 098271 12 Ignitor Cable 24 100609 01 Pilot Tube Natural Gas ARE 099387 14 Pilot Tube Natural Gas iod ios PARTS AVAILABLE NOT SHOWN 112717 01 Remote Sensor Bracket 100563 01 Warning Plate 103877 01 Lighting Instruction Plate 100639 02 Caution Decal 101137 02 Hardware Kit GA606
23. 9 To prevent performance problems do not flue may create and distribute soot within use propane LP fuel tank of less than 100 Ib the house Inspect chimney flue for damage ity propane LP units only If damaged repair flue and firebox before capaci ii 20 Provide adequate clearances around air operating heater 6 Donotburn solid fuel in a masonry or UL127 SPERARE factory built fireplace in which a vent free room heater is installed UNPACKING 7 lffireplace has glass doors never operate this s heater with glass doors closed If you operate CAUTION Do not remove the heater with doors closed heat buildup inside data plates fromthe grate assembly fireplace will cause glass to burst Make sure The data plates contain important there are no obstructions across openings of warranty and safety information fireplace 8 To prevent the creation of soot follow the 1 Remove logs and heater base assembly from instructions in Cleaning and Maintenance carton Note Do not pick up heater base as page 26 sembly by burners This could damage heater 9 Before using furniture polish wax carpet Always handle base assembly by grate cleaner or similar products turn heater off If 2 Remove all protective packaging applied to heated the vapors from these products may logs and heater for shipment create a white powder residue within burner Ea 3 Check all items for shipping damage If box or on adjacent walls and fu
24. DESA HEATING PRODUCTS UNVENTED VENT FREE GAS LOG HEATER OWNER S OPERATION AND INSTALLATION MANUAL We recommend that our products be installed and serviced by professionals who are certified in the U S by NFI National Fireplace Institute 7 www nficertified org Remote Ready Models VUL18 24 30 N P R HRB3930 3924 N P R and CRB2618 3624 3630 N P R Thermostatically Controlled Models VUL18 24 30 N P T and HRB3624 N P T Remote Ready Models Also Design Certified As Vented Decorative Appliances WARNING If the information in this manual is not fol lowed 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 nottouch 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 supplier call the fire department Installation and service must be performed by a quali fied installer service agency or the gas supplier INSTALLER Leave this manual with the appliance CONSUMER Retain this manual for future reference For more information visit www desatech com TABLE OF CONTENTS Safety Information
25. Fireplace Damper Figure 10 Attaching Damper Clamp INSTALLING HEATER BASE ASSEMBLY 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 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 in sure adequate air flow and guard against sooting and controls be ing damaged Raise fireplace floor with noncombustible material Make sure material is secure Chimney Minimum Permanent Height Flue Opening 6 to 15 39 sq inches 15 to 30 29 sq inches CAUTION Do not pick heater base assembly by burn ers This could damage heater Only handle base assembly by grates www desatech com 119426 01A INSTALLATION Continued IMPORTANT Make sure the heater burners are level If heater is not level heater will not work properly For thermostat models avoid damage to thermostat bulb Avoid nicks or sharp bends in thermostat bulb wire Keep thermostat bulb in mounting bracket until ready to mount base to floor See Optional Positioning Of Thermostat Sensing Bulb page 32 Installation Items Needed hardware package provided with heater approved flexible gas hose and fittings not provided if allowed by local codes sealant resistant to propane LP gas not
26. R VUL24NR VUL24PR VUL30NR VUL30PR 49 38 www desatech com 119426 01A PARTS LIST REMOTE READY VARIABLE CONTROL MODELS This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 42 of this manual wa ze 5 8 NO ART NO DESCRIPTION NE Sid Ramp Burner Base 2 111435 01 Electronic Ignitor 3 112465 01 Ramp Front Burner 112465 02 Ramp Front Burner 4 113242 01 Ramp Back Burner Kit 113242 02 Ramp Back Burner Kit 5 103779 01 O D S Pilot Natural Gas 205 103778 01 O D S Pilot Propane LP Gas 6 112713 01 Pilot Bracket Natural Gas iti 112713 03 Pilot Bracket Propane LP Gas 7 098249 01 Nut ODS qus 8 M11084 26 Screw pele 9 112782 03 Air Deflactor Bracket 112782 02 Air Deflactor Bracket IEEE 10 101480 12 Jumper Wire ele 11 101004 11 Rear Burner Injector Natural en 101004 10 Rear Burner Injector Propane LP pti 101004 04 Rear Burner Injector Natural eS gree E 101004 02 Rear Burner Injector Propane LP i 12 101004 11 Front Burner Injector Natural 101004 10 Front Burner Injector Propane LP 101004 08 Front Burner Injector Natural dei 101004 06 Front Burner Injector Propane LE 13 112708 01 Remote Burner Tube 14 M12461 26 Screw 15 099918 02 Pilot Regulator Natural Gas 16 099387 12 Pilot Tube Natural Gas jej 099387 09 Pilot Tube Pr
27. acement Parts on page 42 of this manual PART NUMBER HRB362ANT t HRB3624PT HRB3924NR 3924 KEY CRB2618NR CRB3624NR CRB3630NR NO CRB2618PR CRB3624PR CRB3630PR 1 113620 01 113620 04 113620 07 2 1113620 02 113620 05 113620 05 3 113620 03 113620 06 113620 09 DESCRIPTION Top Log 1 Bottom Log 2 Back Log 3 119426 01A www desatech com 35 ILLUSTRATED PARTS BREAKDOWN THERMOSTAT CONTROLLED MODELS VUL 18NT VUL18PT VUL24NT VUL24PT VUL30NT VUL30PT HRB3624NT AND HRB3624PT 36 www desatech com 119426 01A PARTS 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 42 of this manual KEY NO 1 2 B 4 10 11 12 25 PART NO H 111435 01 112465 01 112465 02 113242 01 113242 02 107485 01 107486 01 112713 01 112713 02 098249 01 M11084 26 112782 01 112782 02 M11084 38 101004 11 101004 10 101004 04 101004 02 101004 15 Front Burner Injector Natural Front Burner Injector Propane LP Front Burner Injector Natural Front Burner Injector Propane LP_ i Thermostat Burner Tube i iScrew Thermobulb Clip Pilot Tube Pilot Tube Adapter Thermostat Gas Valve NG Thermostat Gas Valve LP Thermostat Gas Valve NG Thermostat Gas Valve LP Cott
28. aintenance page 26 or replace burner orifice s Contact qualified service person Put remote selector in ON position See Wiring Diagram page 27 Delayed ignition of one or both burners Manifold pressure is too low Burner orifice s clogged Mislocated crossover tube 1 2 3 Contact local natural or pro pane LP gas company Clean burner s see Cleaning and Maintenance page 26 or replace burner orifice s Contact qualified service person Burner backfiring during com bustion Yellow flame in front burner during burner combustion 2 Burner orifice is clogged or damaged Damaged burner Gas regulator defective Not enough air Gas regulator defective 1 Clean burner see Cleaning and Maintenance page 26 or replace burner Replace damaged burner Replace gas regulator Check burner s for dirt and debris If found clean burner s see Cleaning and Maintenance page 26 Replace gas regulator 119426 01A www desatech com 29 OBSERVED PROBLEM Continued POSSIBLE CAUSE TROUBLESHOOTING REMEDY Slight smoke or odor during initial operation 1 Residues from manufacturing processes and logs curing 1 Problem will stop after a few hours of operation Heater produces a whistling noise when burners are lit Turning control knob to HI position when burners are cold Air in gas line Air passageways o
29. ariable 25 000 36 000 Btu Hr Type Gas Natural Ignition Electronic Manifold Pressure 3 4 W C nlet Gas Pressure in of water Max 10 5 W C Min 5 W C For purpose of input adjustment www desatech com ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST LOG MODELS VUL 18NT VUL18PT VUL24NT VUL24PT VUL30NT VUL30PT VUL18NR VUL18PR VUL24NR VUL24PR VUL30NR AND VUL30PR This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 42 of this manual PART NUMBER VUL18NT VUL24NT VUL30ONT VUL18PT VUL24PT VUL30OPT KEY VUL18NR VUL24NR VUL30NR i NO VUL18PR VUL24PR VUL30PR DESCRIPTION QTY 1 113621 01 113621 07 113621 13 Front Right Log 1 1 2 113621 02 113621 08 113621 14 Front Left Log 1 1 3 113621 03 113621 09 113621 15 Middle Right Log 2 1 4 113621 04 113621 10 113621 16 Middle Left Log 2 1 5 113621 05 113621 11 113621 11 Bottom Log 3 Remote 1 113621 05 113621 19 113621 19 Bottom Log 3 T stat i 6 113621 06 113621 12 113621 18 Rear Log 3 34 www desatech com 119426 01A ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST LOG MODELS CRB2618NR CRB2618PR CRB3624NR CRB3624PR CRB3630NR CRB3630PR HRB3624NT HRB3624PT HRB3624NR AND HRB3624PR This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Repl
30. ater is in the OFF position Check all joints from equipment shutoff valve to thermostat gas valve Thermostat Con trolled Models or to gas control Remote Ready Models see Figure 18 or 19 page 17 Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once Light heater see Operating Heater page 20 or 22 depending on your model Check all other internal joints for leaks Turn off heater see To Turn Off Gas to Appli ance page 21 for Thermostat Controlled mod els or page 23 for Remote Ready Models Open Equipment Shutoff Valve n Closed Figure 17 Equipment Shutoff Valve www desatech com 119426 01A INSTALLATION Continued Propane LP Equipment Supply Tank GY Shutoff Valve Yj S N Z 2 k a 1 Thermostat Gas Valve or Control Valve Location Figure 18 Checking Gas Joints Propane LP Only Equipment 7 Shutoff Valve Y Gas Meter ETC Thermostat Gas AN Valve or Control Valve Location Figure 19 Checking Gas Joints Natural Gas Only INSTALLING OPTIONAL REMOTE ACCESSORIES Installing Remote Receiver Remote control accessories are available sepa rately see Accessories page 42 1 Ifunitis already installed in fireplace continue with
31. by local codes ARA ENERO SEL e SC 0 Figure 12 Attaching Flexible Gas Hose to Heater Gas Regulator Remote Ready Models Only Masonry Screw Figure 13 Attaching Base to Fireplace Floor Remote Ready Models Only 119426 01A www desatech com 13 INSTALLATION Continued CONNECTING TO GAS SUPPLY WARNING This appliance requires a 1 2 NPT National Pipe Thread inlet connection to the pressure regulator WARNING A qualified ser vice person mustconnect heater to gas supply Follow all local codes CAUTION Never connect propane LP fireplace directly to the propane LP supply This heater requires an external regu lator not supplied Install the external regulator between the heater and propane LP supply WARNING Never connect natural gas fireplace to private non utility gas wells This gas is commonly known as wellhead gas Installation Items Needed Before installing heater make sure you have the items listed below external regulator supplied by installer piping check local codes sealant resistant to propane LP gas equipment shutoff valve test gauge connection sediment trap tee joint pipe wrench approved flexible gas line with gas connector if allowed by local codes not provided ACSA design certified equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to
32. combustible material behind it Noncombustible material must extend at least 8 up for all models If noncombustible material is less than 12 you must install the fireplace hood accessory 24 and 30 Models Only See Figure 5 for minimum clearances If Using Mantel You must have noncombustible material s above the fireplace opening Noncombustible materials such as slate marble tile etc must be at least 1 2 thick With sheet metal you must have non combustible material behind it Noncombustible material must extend at least 8 up for all models If noncombustible material is less than 12 you must install the fireplace hood accessory 24 and 30 Models Only Even if noncombustible material is more than 12 you may need the hood accessory to deflect heat away from your mantel shelf See Figure 5 and Figures 6 and 7 page 9 for minimum clearances IMPORTANT If you cannot meet these minimum clearances you must operate heater with chimney flue damper open Go to Installing Damper Clamp Accessory for Vented Operation page 12 Noncombustible Material Requirements for Distance A Safe Installation 12 or more Noncombustible mate rial OK Between 8 and 12724 or 30 Models Install fireplace hood accessory GA6050 GA6052 or GA6053 see Accessories page 42 18 Model Noncombus tible material OK Noncombustible mate rial must be extended to atleast 8 See Between 8 and 12 above If you cannot ex
33. d is smaller than that defined as an unconfined space or if the building is of unusually tight construction provide adequate combustion and ventilation air by one ofthe methods described in the National Fuel Gas Code ANSIZ223 1 NFPA 54 Section 5 3 or applicable local codes VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining un confined space When ventilating to an adjoining unconfined space you must provide two perma nent openings one within 12 of the ceiling and one within 12 of the floor on the wall connecting the two spaces see options 1 and 2 Figure 2 You can also remove door into adjoining room see option 3 Figure 2 Follow the National Fuel Gas Code ANSI Z223 1 NF PA 54 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts Eu SSS 12 Ventilation Pp Grills Into Ventilation Grills Adjoining Into Adjoining Room Room Option 2 Option 1 Figure 2 Ventilation Air from Inside Building 119426 01A www desatech com Y AIR FOR COMBUSTION AND VENTILATION Continued Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts You must provide two permanent openings one within 12 of the ceiling and one within 12 of the floor Connect these items directly to the outdoors or spaces open to the outdoors These space
34. d of a paper clip or similar blunt object Digital Display Shows Locks System to Temperature and Settings Prevent Z Turns Accidental Hand Held Ignition S ni act Remote On or Off and Allows You Turns to Choose Burners On or the Manual Of AN Setting eS Selects AUTO Mode Increases sao i or Decreases Room C F Mode Temperature in AUTO Mode Button Figure 35 Thermostat Hand Held Remote Control Unit 24 www desatech com 119426 01A OPERATING HEATER Continued Manual Mode 1 Press the POWER and LOCK buttons together to turn on the hand held remote control 2 Press the MANU button to turn on the fireplace 3 Press the POWER and LOCK buttons together to turn off the fireplace Auto Thermostatic Mode 1 Press the POWER and LOCK buttons together to turn on the hand held remote control 2 Press AUTO button to select this mode 3 Set the desired room temperature by press ing the TEMP or buttons 4 Press the POWER and LOCK buttons together to turn off the fireplace Note Do not leave the hand held remote in the AUTO mode close to the fireplace The radiant heat from the fireplace will turn off the fireplace Ideally place the hand held remote in the center of the room facing towards the fireplace Note Do not hold the hand held remote for a long time Body temperature will affect its operation in the AUTO mode Safety Features When away from home for an ext
35. e Clearances Above Combustible Flooring 119426 01A www desatech com 11 INSTALLATION 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 noncombustible material If your heater is a manually controlled model you may use this heater as a vented product There are three reasons for operating your heater in the vented mode A 3 The fireplace does not meet the clearance to combustibles requirements for vent free operation State or local codes do not permit vent free operation You prefer vented operation If reasons number 1 or 2 above apply to you you must permanently open chimney flue damper You must install the damper clamp accessory to order see Accessories page 42 This will insure vented operation see Figure 10 The damper clamp will keep damper open Installation instructions are included with clamp accessory See chart below for minimum permanent flue opening you must provide Attach damper clamp so the minimum permanent flue opening will be maintained at all times Area of Various Standard Round Flues Diameter Are 5 20 sq inches e 29 sq inches 7 39 sq inches 8 51 sq inches NS Damper Masonry Fireplace Damper Clamp ET N Damper Damper os Manufactured
36. e to use original factory replacement parts voids this warranty The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES INCLUD ING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR 4 YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE AND DESA HEATING PRODUCTS LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA HEATING PRODUCTS SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages so the above limitation on implied warranties or exclusion or limitation on damages may not apply to you This warranty giv
37. eck your building codes for any special re quirements for locating equipment shutoff valve to fireplaces Apply pipe joint sealant lightly to male NPT threads This will prevent excess sealant from going into pipe Excess sealant in pipe could result in clogged heater valves AX WARNING Use pipe joint sealant that is resistant to liquid petroleum LP gas We recommend that you install a sediment trap in supply line as shown in Figures 15 or 16 depend ing on your model Locate sediment trap where it is within reach for cleaning Install in piping system between fuel supply and heater Locate sediment trap where trapped matter is not likely to freeze A sediment trap traps moisture and contaminants This keeps them from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly A CAUTION Avoid damage to regulator Hold gas regulator with wrench when connecting it to gas piping and or fittings Thermostatically Controlled Models Only A CAUTION Avoid damage to gas control Hold gas control with wrench when connecting it to gas piping and or fittings Remote Ready Models Only CSA Design Certified PROPANE LP Equipment Shutoff Valve From External With 1 8 NPT Tap Regulator 11 W C Approved Flexible to 14 W C Gas Hose if allowed by local From Gas Meter 5 W C to 10 5 W C Pressure Tee Cap Pipe Joint Nipple
38. el bookshelf etc is made of combustible material and protrudes 3 2 from the wall This combus tible material must be 4 from the side of the fireplace cabinet see Figure 4 Note When installing your gas logs into a manufactured firebox follow firebox manufacturer s instructions for minimum clearances to combustible materials B Clearances from the top of the fireplace opening to the ceiling should not be less than 42 121 4 101 2 8 3 4 Example 7 51 4 3 2 12 4 78 7 16 INCHES FIREBOX 5 1 2 4 6 8 10 12 14 16 INCHES Minimum 16 from Side Wal Figure 4 Minimum Clearance for Combustible to Wall 119426 01A www desatech com INSTALLATION Continued NOTICE Manual control heaters may beusedas a vented product If so you mustalways run heater with chimney flue damper open If running heater with damper open noncombustible material above fireplace opening is not needed Go to nstalling Damper Clamp Accessory for Vented Operation page 12 Minimum Noncombustible Material Clearances If Not Using Mantel Note If using a mantel proceed to If Using Mantel If not using a mantel follow the information on this page You must have noncombustible material s above the fireplace opening Noncombustible materials such as slate marble tile etc must be at least 1 2 thick With sheet metal you must have non
39. ended period of time or as a child safety feature to prevent accidental ignition of the fireplace the receiver ON OFF REMOTE switch should be in the OFF position Auto Shutoff Feature 1 If the average room temperature exceeds 82 degrees Fahrenheit 28 degrees Centi grade the hand held remote control will perform a safety override and shut the fireplace off This feature is not available in the MANU mode 2 The receiver continuously receives signals from the hand held remote to control the room temperature If the hand held remote is misplaced obstructed or for any reason cannot transmit to the receiver the receiver will shut off the fireplace after 8 minutes Key Pad Lock Feature This feature allows the user to lock unlock the keypad on the hand held remote in the MANU or AUTO mode to prevent inadvertent operation i e children operating the hand held remote control etc The keypad is locked in either on or off Press the POWER and LOCK buttons together to turn the unit on or off INSPECTING BURNERS Check pilot flame pattern and burner flame pat terns often PILOT FLAME PATTERN Figure 36 shows a correct pilot flame pattern Figure 37 shows an incorrect pilot flame pattern The incorrect pilot flame is not touching the thermocouple This will cause the thermocouple to cool When the thermocouple cools the heater will shut down If pilot flame pattern is incorrect as shown in Figure 37 turn heater off see To
40. er Pin Control Rod Control Knob Thermostat Valve Bracket Ignitor Cable Gas Regulator Natural Gas Gas Regulator Propane LP Inlet Tube 101004 11 101004 10 101004 22 101004 06 112708 02 099211 01 098544 01 099387 09 099387 14 101053 01 101329 21 101329 30 101329 31 101329 26 100000 01 102013 01 098354 01 412714 01 098271 12 098867 09 098867 10 112712 01 PARTS AVAILABLE NOT SHOWN LSS a sss Warning Plate Lighting Instruction Plate Hardware Kit Lava Rock Auxiliary Thermostat Mtg Clip 100563 01 101054 01 101137 02 GA6060 102030 01 _ DESCRIPTION Ramp Burner Base Electronic Ignitor Ramp Front Burner Ramp Front Burner Ramp Back Burner Kit Ramp Back Burner Kit O D S Pilot Natural Gas O D S Pilot Propane LP Gas Pilot Bracket Natural Gas Pilot Bracket Propane LP Gas Nut ODS Screw Air Deflactor Bracket Air Deflactor Bracket Screw Rear Burner Injector Natural Rear Burner Injector Propane LP Rear Burner Injector Natural i Rear Burner Injector Propane LP Not a field replaceable part 3 NaS 5 1 gt EN ES 119426 01A www desatech com 37 ILLUSTRATED PARTS BREAKDOWN REMOTE READY VARIABLE CONTROL MODELS VUL18NR VUL18P
41. es you specific legal rights and you may also have other rights that vary from state to state For information about this warranty write DESA HEATING PRODUCTS 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 119426 01 Rev A NOT A UPC 05 06
42. ideal comfort setting will vary by household depending upon the amount of space to be heated the output of the central heating system etc Note Selecting the HI setting with the control knob will cause the burner to remain fully on without modulating down in most cases EN MANUAL LIGHTING PROCEDURE 1 Follow steps 1 through 5 under Lighting Instructions page 20 2 Depress control knob and light pilot with match 3 Keepcontrol knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Now follow step 8 under Lighting Instructions column 1 119426 01A www desatech com 21 OPERATING HEATER Continued REMOTE READY MODELS FOR YOUR SAFETY READ BEFORE LIGHTING LIGHTING ES co EE Ad WARNING If you do not fol low these instructions exactly a fire or explosion may result causing property damage per sonal injury or loss of life A a 22 This appliance has a pilot which must be lighted by hand When lighting the pilot follow these instructions exactly BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Inmediately call your gas supplier from a neighbor s phone Follow the gas sup
43. ions are provid ed 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 Today s homes are built more energy efficient than ever New materials increased insulation and new construction methods help reduce heat loss in homes Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in During heating months home owners want their homes as airtight as possible While it is good to make your home energy effi cient your home needs to breathe Fresh air must enter your home All fuel burning appliances need fresh air for proper combustion and ventilation Exhaust fans fireplaces clothes dryers and fuel burning appliances draw air from the house to operate You must provide adequate fresh air for these appliances This will insure proper venting of vented fuel burning appliances PROVIDING ADEQUATE VENTILATION The following are excerpts from National Fuel Gas Code ANSI Z223 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation spaces in homes fall into one of the three fol lowing ventilation classifications 1 Unusually Tight Construction 2 Unconfined Space 3 Confined Space The information on pages 6 through 8 will help you classify your space and provide adequate ventilation Unusually Tight Construction The air that leaks around doors and windows may
44. itor electrode positioned wrong Ignitor electrode broken Battery not installed battery power low or battery not installed correctly electronic ignition models only l 2 BW Ee Reconnect ignitor cable Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry Replace ignitor cable Replace ignitor Replace pilot assembly Replace pilot assembly Install new alkaline battery in electronic ignitor Verify battery is installed correctly When ignitor button is pressed there is spark at ODS pilot but no ignition Gas supply turned off or equip ment shutoff valve closed Control knob not in PILOT position Control knob not pressed in while in PILOT position Air in gas lines when installed Turn on gas supply or open equipment shutoff valve Turn control knob to PILOT position Press in control knob while in PILOT position Continue holding down con trol knob Repeat igniting op eration until air is removed 5 Depleted gas supply pro 5 Contact local propane LP gas pane LP only company 6 ODS pilot is clogged 6 Clean ODS pilot see Cleaning and Maintenance page 26 or replace ODS pilot assembly 7 Gas regulator setting is not 7 Replace gas regulator correct 28 www desatech com 119426 01A OBSERVED PROBLEM Continued POSSIBLE CAUSE TROUBLESHOOTING REMEDY ODS pilot lights but flame goes out when c
45. l A wall mount docking station is included WALL MOUNT THERMOSTAT SWITCH GWMT1 Not Shown For all Remote Ready Models The desired com fort setting can be selected on the wall thermostat and the log heater will automatically cycle from pilot to the heat setting selected WALL MOUNT ON OFF SWITCH GWMS2 Not Shown VENT FREE LOGMATE FIREBOXES Not Shown Available in 32 36 and 42 models Circu lating fireboxes feature louvers and an optional blower Non circulating smooth face models are ideal for custom trim applications such as stone or marble FB32C CIRCULATING FB32NC NON CIRCULATING SERIES FIREBOXES Not Shown For 18 and 24 log models FB36CA FB42C SERIES CIRCULATING FB36NCA FB42NC SERIES FIREBOXES NON CIRCULATING Not Shown For all log models DAMPER CLAMP GA6080 Not Shown For Remote Ready Models Permanently opens chimney flue damper for vented operation LAVA ROCK GA6060 Not Shown For all models Order when additional rock is desired 1 8 Ib bag CLEANING KIT GCK Not Shown For all models Your vent free gas appliance re quires regular cleaning and maintenance to prevent performance problems This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance INFORMATION VIDEO 108917 01 For all models A care and maintenance video is available by calling 1 866 672 6040 You may also email your request to p
46. lb SL Figure 45 Locating Thermostat Sensing Bulb on Masonry Fireplace Retaining Clamp Thermostat Sensing Bulb Adhesive backed Mounting Clip Thermostat Sensing Bulb Adhesive backed Mounting Clip Figure 46 Locating Thermostat Sensing Bulb on Factory built Metal Fireplace Thermostat Sensing Bulb Adhesive backed Mounting Clip Glass Doors Figure 47 Installing Thermostat Sensing Bulb Behind Glass Doors 32 www desatech com 119426 01A 119426 01 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB Continued The mounting clip must be a minimum of 3 from bottom of fireplace to prevent crimping of capillary Once you have decided on a location clean the area thoroughly Remove the paper backing from the adhesive on back of mounting clip Press the clip into the new location so that the thermostat sensing bulb will be positioned vertically with the capil lary at the bottom see Figure 48 Slide the thermostat sensing bulb into the clip IMPORTANT Do not crimp capillary Thermostat Sensing Bulb Adhesive backed Mounting Clip Do Not Crimp Capillary Capillary Figure 48 Positioning the Thermostat Sensing Bulb in the Vertical Position with the Capillary at the Bottom SPECIFICATIONS THERMOSTAT MODELS REMOTE READY MODELS VUL18PT VUL18PR CRB2618NR Rating Variable 19 000 30 000 Btu Hr Type Gas Propane LP Ignition Electronic Manifold Pressure 7 9
47. n heater blocked Dirty or partially clogged burner orifice s Turn control knob to LO position and let warm up for a minute Operate burners until air is removed from line Have gas line checked by local natural or propane LP gas company Observe minimum installa tion clearances see pages 9 through 11 Clean burners see Cleaning and Maintenance page 26 or replace burner orifice s White powder residue forming within burner box or on adjacent walls or furniture Moisture condensation noticed on windows Remote does not function Re mote Ready Models Only When heated vapors from furniture polish wax carpet cleaners etc may turn into white powder residue Not enough combustion ven tilation air Battery is not installed Bat tery power is low Turn heater off when using furniture polish wax carpet cleaners or similar products Refer to Air for Combustion and Ventilation requirements page 6 Replace 9 volt batteries in re ceiver and hand held remote Heater produces aclicking tick ing noise just after burners are lit or shut off Metal expanding while heating or contracting while cooling This is normal with most heat ers If noise is excessive contact qualified service person 30 www desatech com 119426 01A TROUBLESHOOTING Continued building A WARNING If you smell gas Shut off gas supply Do
48. not try to light any appliance Do not touch any electrical switch do not use any phone in your Immediately call your gas supplier from a neighbor s phone Fol low the gas supplier s instructions If you cannot reach your gas supplier call the fire department IMPORTANT Operating heater where impurities in air exist may create odors Cleaning supplies paint paint remover cigarette smoke cements and glues new carpet or textiles etc create fumes These fumes may mix with combustion air and create odors These odors will disappear over time OBSERVED PROBLEM Heater produces unwanted odors POSSIBLE CAUSE 1 Heater burning vapors from paint hair spray glues cleaners chemi cals new carpet etc See M PORTANT statement above Low fuel supply propane LP only Gas leak See Warning statement at top of page REMEDY in Open window to ventilate room Stop using odor caus ing products while heater is running Refill supply tank propane LP only Locate and correct all leaks see Checking Gas Connec tions page 16 Heater shuts off in use ODS operates Not enough fresh air is avail able Low line pressure ODS pilot is partially clogged Open window and or door for ventilation Contact local natural or pro pane LP gas company Clean ODS pilot see Cleaning and Maintenance page 26 Gas odor even when control knob is in OFF positi
49. oisoning resemble the flu with head aches dizziness or nausea If you have these signs the fireplace may not be working properly Get fresh air at once Have fireplace serviced Some people are more affected by carbon monoxide than others These include pregnant women people with heart or lung disease or anemia those under the influence of alcohol and those at high altitudes Natural and Propane LP gases are odorless An odor making agent is added to these gases The odor helps you detect a gas leak However the odor added to the gas can fade Gas may be present even though no odor exists Make certain you read and understand all warnings Keep this manual for reference It is your guide to safe and proper operation of this fireplace WARNING Any change to this heater or its controls can be dangerous WARNING Do not use blower insert heat exchanger insert or other accessory notap proved for use with this heater 119426 01A WARNING Do notallowfans to blow directly into the fireplace Avoid any drafts that alter burner flame patterns Ceiling fans can create drafts that alter burner flame patterns Altered burner patterns can cause sooting Due to high temperatures the appliance should be located out of traffic and away from furniture and draperies Do not place clothing or other flammable material on or near the appliance Never place any objects on the heater
50. on Gas leak See Warning statement at top of page Control valve or gas control defective Locate and correct all leaks see Checking Gas Connec tions page 16 Replace control valve or gas control Gas odor during combustion Foreign matter between con trol valve and burner Gas leak See Warning statement at top of page Take apart gas tubing and remove foreign matter Locate and correct all leaks see Checking Gas Connec tions page 16 Log set cycles to pilot but room temperature drops to a lower than ideal level before log set comes back on Thermostat sensing bulb needs to be repositioned Thermo stat Controlled Models Only Hand held remote control is too close to heater Remote Ready Models Only Reposition thermostat sensing bulb see Optional Positioning of Thermostat Sensing Bulb page 32 Move hand held remote con trol unit farther away from the heater 119426 01A www desatech com 31 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB Thermostat Controlled Models Only FOR MASONRY AND FACTORY BUILT METAL FIREPLACE If your log set cycles to pilot but the room tem perature drops to a lower than ideal comfort level before the log set comes back on you may want to reposition the thermostat sensing bulb The thermostat sensing bulb is located on the gas valve assembly This location allows the ther mostat to keep
51. ontrol knob is released Control knob not fully pressed in Control knob not pressed in long enough Safety interlock system has been triggered Equipment shutoff valve not fully open Pilot flame not touching ther mocouple which allows ther mocouple to cool causing pilot flame to go out This problem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS pilot Thermocouple connection loose at control valve Thermocouple damaged Control valve damaged 1 Press control knob fully After ODS pilot lights keep con trol knob pressed in 30 seconds Wait one minute for safety in terlock system to reset Repeat ignition operation Fully open equipment shutoff valve A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 26 or replace ODS pilot assembly Hand tighten until snug then tighten 1 4 turn more Replace pilot assembly Replace control valve One or both burners do not light after ODS pilot is lit Inlet gas pressure is too low Burner orifice s clogged Mislocated crossover tube Remote selector in OFF position Remote Ready models only Wire disconnected from gas control Remote Ready models only 1 Ze 3 4 5 Contact local natural or pro pane LP gas company Clean burner s see Cleaning and M
52. opane LP o pes 17 098264 02 Male Fitting 202020 18 101329 21 Control Valve NG iti 101329 30 Gas Control Valve LP 19 103784 01 Control Knob Extension x 20 103784 02 Flame Adjustment Knob Extension 21 111173 01 Remote Valve Bracket 22 112715 01 Remote Knob Heat Shield 23 098271 12 Ignitor Cable 24 100609 01 Pilot Tube Natural Gas isi d 099387 14 Pilot Tube Natural Gas Pei ee PARTS AVAILABLE NOT SHOWN 112717 01 Remote Sensor Bracket 100563 01 Warning Plate 103877 01 Lighting Instruction Plate 100639 02 Caution Decal 101137 02 Hardware Kit GA6060 Rock Not a field replaceable part a s na a au E d BM MM NM EM 119426 01 www desatech com 39 ILLUSTRATED PARTS BREAKDOWN REMOTE READY VARIABLE CONTROL MODELS CRB2618NR CRB2618PR CRB3624NR CRB3624PR CRB3630NR CRB3630PR HRB3624NR AND HRB3624PR 119426 01A www desatech com 40 PARTS LIST REMOTE READY VARIABLE CONTROL MODELS This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 42 of this manual KEY NO PART NO DESCRIPTION Sl Ramp Burner Assembly 2 111435 01 Electronic Ignitor 112465 01 Ramp Front Burner 112465 02 Ramp Front Burner 4 113242 01 Ramp Back Burner Kit ore 113242 02 Ramp Back Burner Kit TO ee e rods 5 103779 01 O D S Pilot Natural Gas 10
53. ot install this appliance in a factory built fireplace that includes instructions stating it has not been tested or should not be used with unvented gas logs 2 www desatech com WARNING This unvented gas fired heat er It uses air oxygen from the room in which it is installed Provisions for adequate combustion and ventilation air must be provided Refer to Air for Combustion and Ven tilation section on page 6 of this manual is an This appliance may be in stalled in an aftermarket permanently located manufactured mobile home where not prohib ited by local codes 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 Aftermarket Completion of sale not for purpose of resale from the manufacturer 119426 01A SAFETY INFORMATION Continued WARNING This product con tains and or generates chemicals known to the state of California to cause cancer or birth defects or other reproductive harm IMPORTANT Read this owner s manual carefully and completely before trying to assemble op erate or service this fireplace Improper use of this fireplace can cause serious injury or death from burns fire explo sion electrical shock and carbon monoxide poisoning DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide p
54. pace Rooms com municating directly with the space in which the appliances are installed through openings not furnished with doors are considered a part of the unconfined space Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them DETERMINING FRESH 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 6 www desatech com 119426 01A AIR FOR COMBUSTION AND VENTILATION Continued Space Includes the room in which you will install fireplace plus any adjoining rooms with doorless pas sageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x height Length x Width x Height cu ft volume of space Example Space size 20 ft length x 16 ft width x 8 ft ceiling height 2560 cu ft volume of space If additional ventilation to adjoining room is supplied with grills or openings add the volume of these rooms to the total volume of the space 2 Multiply the space volume by 20 to determine the maximum Btu Hr the space can support volume of space x 20 Maxi mum Btu Hr the space can support Example 2560 cu ft volume of space x 20 51 200 maximum Btu Hr the space can support 3 Add the Btu Hr of all fuel burning appliances in the space Vent free fireplace Btu Hr Gas water heater Btu
55. plier s instructions If you cannot reach your gas supplier call the fire department Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service tech nician or gas supplier Force or attempted repair may result in a fire or explosion Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water www desatech com WARNING If fireplace has glass doors never operate this heater with glass doors closed If you op erate heater with doors closed heat buildup inside fireplace will cause glass to burst Make surethere are no obstructions across openings of fireplace You must operate this heater with a fireplace screen in place Make sure fireplace screen is closed before running heater NOTICE Duringinitial operation of new heater burning logs will give off a paper burning smell Orange flame will also be pres ent Open damper or window to vent smell This will only last a few hours Note Home owners generally prefer to op erate their heater with the chimney damper closed This will put all the heat into the room However there may be times you will desire the full flames of the HI heat setting but will find the heat outpu
56. pro vided electric drill with 3 16 masonry drill bit Note Install optional GHRCTB Receiver and Hand Held Remote Control Kit see Accessories page 42 before installing gas log heater Remote Ready Models Only See installation instructions included with the kit 1 Apply pipe joint sealant lightly to male threads of gas fitting not provided For Thermostati cally Controlled Models connect approved flexible gas hose to gas regulator of heater see Figure 11 For Remote Ready models connect approved flexible gas hose to inlet side of gas control see Figure 12 IMPOR TANT Hold gas regulator with wrench when connecting flexible gas hose Thermostati cally Controlled Models Only Position heater base assembly in fireplace 3 Mark screw locations through holes in front panel of base see Figure 13 If installing in a brick bottom fireplace mark screw locations in mortar joint of bricks Remove heater base from fireplace 5 Drill holes at marked locations using 3 16 drill bit 6 Attach base through holes in front panel of base to fireplace floor using masonry screws provided in hardware package see Figure 13 7 Connect to gas supply See Connecting To Gas Supply page 14 Heater Gas Regulator Flexible Gas Hose if allowed by local codes N lt Figure 11 Attaching Flexible Gas Hose to Heater Gas Regulator Thermostatically Controlled Models Only Flexible Gas Hose if allowed
57. provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defined as construction where walls and ceilings exposed to the out side atmosphere have a continuous water vapor retarder with a rating of one perm 6 x 10 kg per pa sec m or less with openings gasketed or sealed b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to areas such as joints around window and door frames between sole plates and floors between wall ceiling joints between wall panels at penetrations for plumbing electrical and gas lines and at other openings If your home meets all of the three criteria above you must provide additional fresh air See Ventilation Air From Outdoors page 8 If your home does not meet all of the three criteria above proceed to Determin ing Fresh Air Flow For Heater Location below Confined and Unconfined Space The National Fuel Gas Code ANSI Z223 1 NF PA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1 000 Btu per hour 4 8 m per kw of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1 000 Btu per hour 4 8 m per kw of the aggregate input rating of all appliances installed in that s
58. r as your pri mary heat source If you have a central heating system you may run system s circulating blower while using heater This will help circulate the heatthroughoutthe house In the event of a power outage you can use this heater as your primary heat source Ay WARNING Seal any fresh air vents or ash clean out doors located on floor or wall of fire place If not drafting may cause pilot outage or sooting Use a heat resistant sealant Do not seal chimney flue damper WARNING A qualified ser vice person must install heater Follow all local codes WARNING Never install the heater in a bedroom or bathroom unless installed as a vented appliance see page 12 Re mote Ready Models Only inarecreational vehicle where curtains furniture cloth ing or other flammable objects are less than 42 from the front top or sides of the heater in high traffic areas in windy or drafty areas 8 www desatech com 119426 01A INSTALLATION Continued CAUTION This heater cre ates warm air currents These currents move heat to wall sur faces next to heater Installing heater next to vinyl or cloth wall coverings or operating heater where impurities such as but not limited to tobacco smoke aromatic candles cleaning flu ids oil or kerosene lamps etc in the air exist may discolor walls or cause odors IMPORTANT Vent free heaters add
59. rate this heater A This appliance has a pilot which must be M lighted by hand When lighting the pilot witha fireplace screenin place follow these instructions exactly Make sure fireplace screen is B BEFORE LIGHTING smell all around the closed before running heater appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Inmediately call your gas supplier from a neighbor s phone Follow the gas NOTICE Duringinitial operation of new heater burning logs will give off a paper burning smell Orange flame will also be pres ent Open damper or window to vent smell This will only last a few hours supplier s instructions If you cannot reach your gas supplier call the fire department C Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service tech nician or gas supplier Force or attempted repair may result in a fire or explosion Note Home owners generally prefer to op erate their heater with the chimney damper closed This will put all the heat into the room However there may be times you will desire the full flames of the HI heat setting but will find the heat output excessive
60. rniture ew m damaged promptly inform dealer where you 10 This heater needs fresh outside air ventilation bousht heat I ought heater to run properly This heater has an Oxygen Depletion Sensing ODS safety shutoff system The ODS shuts down the heater if enough fresh airis not available See Air for Combustion and Ventilation page 6 If heater keeps shutting off see Troubleshooting page 28 4 www desatech com 119426 01A PRODUCT IDENTIFICATION Model CRB and HRB Series Logs Assembly Rear Burner Model VUL Series Logs Flame Adjustment Knob Remote Knob Control Optional Base Assembly Figure 1 Product Identification LOCAL CODES Install and use heater with care Follow all local codes In the absence of local codes use the lat est edition of The National Fuel Gas Code ANSI Z223 1 NFPA 54 Available from American National Standards Institute Inc 1430 Broadway New York NY 10018 National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 State of Massachusetts The installa tion must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts Sellers of unvented propane or natural gas fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit Vent free gas products are prohibited for bedroom and bathroom installation in the Commonwealth of Massachusetts OPTIONAL
61. roductsupport desaint com FIRE CRACKLE CF6 A For all Remote Ready Models Allows the gas Not Shown log heater to be turned on and off with a wall For all models Creates the sound of a real burn switch ing fire 119426 01A www desatech com 43 WARRANTY INFORMATION KEEP THIS WARRANTY Model Serial No Date Purchased 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 We make no other warranty expressed or implied LIMITED WARRANTY VENT FREE GAS LOG HEATERS DESA Heating Products warrants this product to be free from defects in materials and components for four 4 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 warranty the Bill of Sale or cancelled check must be presented This warranty is extended only to the original retail purchaser This warranty covers the cost of part s required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heating Products Authorized Service Center Warranty part s MUST be obtained through authorized dealers of this product and or DESA Heating Products who will provide original factory replacement parts Failur
62. rson or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure 7 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob If control knob does not pop out when released contact a qualified service person or gas supplier for repairs Note If pilot goes out repeat steps 3 through 7 This heater has a safety interlock system Wait one 1 minute for system to reset before lighting pilot again 8 Turn control knob counterclockwise gt to desired heating level The burners should light Set control knob to any heat level between HI and LO CAUTION Do not try to ad just heating levels by using the equipment shutoff valve ig pi Ignitor Button Control Knob Figure 28 Control Knob and Ignitor Button Location Ignitor Electrode Pilot Burner Thermocouple Figure 29 Pilot HE TO TURN OFF GAS TO APPLIANCE Shutting Off Heater Turn control knob clockwise MX to the OFF position Shutting Off Burners Only pilot stays lit Turn control knob clockwise Z Xx to the PILOT position THERMOSTAT CONTROL OPERATION The thermostat control knob can be set to any comfort level between HI and LO The ther mostat will gradually modulate the heat output and flame height from higher to lower settings or pilot in order to maintain the comfort level you select The
63. s include attics and crawl spaces Follow the National Fuel Gas Code ANSI Z223 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts IMPORTANT Do not provide openings for inlet or outlet air into attic if attic has a thermostat controlled power vent Heated air entering the attic will activate the power vent Ventilated Outlet Attic Air mr Outlet Air To Attic E To Crawl Space Air Ventilated Crawl Space Inlet Air Figure 3 Ventilation Air from Outdoors INSTALLATION NOTICE State or local codes may only allow operation of this appliance in a vented configura tion Check your state or local codes WARNING Make sure the selector switch is in the OFF position before installing heater Remote Ready Models Only WARNING Before installing in a solid fuel burning fireplace the chimney flue and firebox must be cleaned of soot creo sote ashes and loose paint by a qualified chimney cleaner Creosote will ignite if highly heated A dirty chimney flue may create and distribute soot within the house Inspect chimney and firebox flue for damage If dam aged repair flue and firebox before operating heater NOTICE This heater is intended for use as supplemental heat Use this heater along with your primary heating system Do not install this heate
64. se the mantel to an accept able height remove the mantel Mantel Shelf 10 Underside of 8 Mantel Shelf 6 21 All minimum distances are in inches Minimum Non gt Combustible A Log Set Material 12 18 20 22 24 24 30 36 Models 8 14 17 19 20 4 18 Model Y Top of Fireplace We uf Opening Minimum Non Distances to Combustible Underside of Material Height Mantel Figure 6 Minimum Mantel Clearances Without Using Hood Mantel Shelf Underside of Mantel Shelf All minimum Minimum V distances are Inimul ma in inches Noncombustible gt Material Log Sets 12 15 fas 20 18 24 amp 30 WS Hood Distances to GA6050 Underside of GA6052 Mantel or GA6053 Models Top of Fireplace Opening Figure 7 Minimum Mantel Clearances When Using Hood FLOOR CLEARANCES A If installing appliance on the floor level you must maintain the minimum distance of 14 to combustibles see Figure 8 B If combustible materials are less than 14 to the fireplace you must install appliance at least 5 above the combustible flooring see Figure 9 Combustible Material un Min AA I Material Figure 8 Minimum Fireplace Clearances If Installed at Floor Level Combustible Material za 5 ae Figure 9 Minimum Fireplac
65. stay lit contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 24 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob e If control knob does not pop out when released contact a qualified service person or gas supplier for repairs Note If pilot goes out repeat steps 4 through 8 page 22 and above Slightly push in and turn control knob coun terclockwise 47 to the ON position Wait one minute and switch selector switch to the ON position to light burners Note AUTO is only functional when using GWMT1 or GWMS2 optional accessories Set flame adjustment knob to any level between HI and LO Control Knob Y i Yona gt ON O OFF REMOTE Flame Adjustment Selector Switch in OFF Position Figure 30 Control Knob and Ignitor Button Location A CAUTION Do not try to ad just heating levels by using the equipment shutoff valve WARNING Make sure the se lector switch is in the OFF position when you are away from home for long periods of time Heater will come on automatically with selec tor switch in the ON position Ignitor Electrode Figure 31 Pilot Propane LP Ignitor Electrode Pilot Burner Figure 32 Pilot Natural TO TURN OFF GAS EM TO APPLIANCE Shutting Off Heater
66. t excessive You can open the chimney damper if you have one fully or partially to release some of the heat WARNING Damper handle will be hot if heater has been running STOP Read the safety information column 1 Make sure equipment shutoff valve is fully open Set selector switch in the OFF position Press in and turn control knob clockwise N to the OFF position see Figure 30 page 23 A WARNING Burners will come onautomatically within one minute when the selector switch is in the ON position after the pilot is lit 119426 01A 10 Ignitor Button Knob OPERATING HEATER Continued 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 column 1 page 22 If you don t smell gas go to the next step Press in and turn control knob counter clockwise gt to the PILOT position Press in control knob for five 5 seconds see Figure 30 Note You may be running this heater for the first time after hooking up to gas sup ply If so the control knob may need to be pressed in for 30 seconds or less This will allow air to bleed from the gas system With control knob pressed in press and release ignitor button This will light pilot The pilot is attached to the front burner If needed keep pressing ignitor button until pilot lights Note If pilot does not
67. tend material you must operate heater with flue damper open Less than 8 Heat Resistant Material Figure 5 Heat Resistant Material Slate Marble Tile etc Above Fireplace MANTEL CLEARANCES In addition to meeting noncombustible material clearances you must also meet required clearances between fireplace opening and mantel shelf If you do not meet the clearances listed below you will need a hood Determining Minimum Mantel Clearance If you meet minimum clearance between mantel shelf and top of fireplace opening a hood is not required see Figure 6 page 11 Determining Minimum Mantel Clearance When Using a Hood If minimum clearances in Figure 6 page 11 are not met you must have a hood When using a hood there are still certain minimum mantel clearances required Follow minimum clearances shown in Figure 7 page 11 when using hood 10 www desatech com 119426 01A INSTALLATION Continued NOTICE Surface temperatures ofadjacent walls and mantels be come hot during operation Walls and mantels above the firebox may become hot to the touch If installed properly these tem peratures meet the requirement ofthe national product standard Follow all minimum clearances shown in this manual NOTICE If yourinstallation does not meet the minimum clear ances shown you must do one of the following operate the logs only with the flue damper open rai
68. these instructions If unit has not been installed in fireplace go to step 6 and continue installation of remote accessory AX WARNING Turn off heater and let cool before handling any part of heater Make sure gas is turned of to unit Carefully remove logs and set aside 3 Locate mounting screws on sides of heater base assembly and remove screws Set screws aside for reinstallation 4 Disconnect gas line from heater base as shown in Figure 11 or 12 page 13 WARNING A qualified ser vice person must connect and disconnect gas to heater Follow all local codes 5 Remove heater base from fireplace 6 Install receiver bracket to base with phillips screws provided in hardware kit as shown in Figure 20 7 Disconnect jumper wire from control valve at TPTH and TH locations see Figure 21 8 Install remote receiver into receiver bracket using pads and push button clips provided with receiver see Figure 22 Phillips Screws Remote Receiver Bracket Figure 20 Installing Remote Receiver Bracket Jumper Control Valve Z Wire Figure 21 Disconnecting Jumper Wire From Control Valve 9 Volt Battery Battery Clip Terminal Wires Button Clips g Bracket Figure 22 Installing Remote Receiver 119426 01A www desatech com 17 INSTALLATION Continued 9 Connect wires to control valve at the TPTH and TH locations as shown in Figure 23 Note Make sure e
69. ve from gas supply piping system Pressures in excess of 1 2 psig will damage heater regulator Cap off open end of gas pipe where equipment shutoff valve was connected Pressurize supply piping system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air Check all joints of gas supply piping system Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once Reconnect heater and equipment shutoff valve to gas supply Check reconnected fittings for leaks Test Pressures Equal To or Less Than 1 2 PSIG 3 5 kPa 1 2 4 Close equipment shutoff valve see Figure 17 Pressurize supply piping system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air Check all joints from gas meter to equipment shutoff valve for natural gas or propane LP supply to equipment shutoff valve for pro pane LP see Figure 18 or 19 page 17 Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once PRESSURE TESTING HEATER GAS CONNECTIONS 1 2 nw Open equipment shutoff valve see Figure 17 Open main gas valve located on or near gas meter for natural gas or open propane LP supply tank valve Make sure control knob of he
70. xcess wire does not inter fere with burner or pilot 10 If heater was removed from fireplace before installation of remote accessory see Install ing Heater Base Assembly on page 12 to rein stall heater into fireplace Test gas connection for leaks see Checking Gas Connections page 16 11 If logs were removed from heater for install remote accessory replace logs see Installing Logs column 2 White Wire From Receiver Red Wire From Receiver Control Valve Figure 23 Connecting Wires Installing Batteries for Remote Receiver and Hand Held Remote Control Two 9 volt alkaline batteries not included are required to operate this heater with the wireless hand held remote control set One battery must be installed in the receiver and one in the hand held remote control unit Note Only use alkaline batteries Installing 9 Volt Battery in Receiver 1 Locate back of receiver behind receiver bracket mounted on base assembly 2 Locate the battery clip mounted on the back of the receiver see Figure 22 page 17 3 Slide a 9 volt battery through the clip 4 Attach the terminal wires to the battery Installing 9 Volt Battery Not Included in Hand Held Remote Control Unit 1 Remove battery cover on back of remote control unit 2 Attach terminal wires to the battery Place battery into the battery housing 3 Replace battery cover onto remote control unit Battery Cover Remote Control Unit

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