Desa Tech CBP20 Gas Heater User Manual
Contents
1. 097159 04 107954 01 107879 02 1110038 03 107677 01 098260 12 107894 08 098271 09 098249 01 110803 01 110186 01 103446 01 099387 05 103845 06 099066 02 099415 17 103570 04 103572 03 098508 01 098354 02 109303 04 097159 04 107954 01 107879 02 110038 04 107677 01 098260 12 107894 08 098271 09 098249 01 110803 02 110186 01 103446 01 099387 05 103845 05 099066 02 099415 18 103570 04 103572 03 098508 01 098354 02 109303 04 Piezo 19010 Front Panel Grill Guard Control Valve Glass Retainer Glass Cabinet Deflector Assembly Ignitor Cable Nut M5 ODS Pilot Assembly Thermocouple Kit Burner 3 16 Pilot Tubing Injector Mounting Bracket Gas Regulator Hex Nut 3 8 Outlet Tubing 3 8 Inlet Tubing Valve Retainer Nut Control Knob Baffle PARTS AVAILABLE NOT SHOWN 100642 03 105345 01 107888 01 109483 01 GA4550 100642 03 105345 01 107888 01 109483 01 GA4550 Not a field replaceable part a Hardware Assembly Cable Tie Control Position Label Lighting Instruction Plate Base Kit KEY PART NUMBER FOR CBP20 DESCRIPTION QTY eu ek ak Se ee ee ey ke a et a E TN DESA ILLUSTRATED PARTS BREAKDOWN CBN20T CBP20T CBN30T CBP30T ILLUSTRATED PARTS BREAKDOWN CBN20T CBP20T CBN30T CBP30T 107882 01E PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instru2. 1 2 Remove front cover see Removing Front Panel of Heater page 8 Position heater with base feet in desired location Mark holes for drilling Remove heater with base For carpeted floors make a small cut with a sharp knife at marked locations prior to drilling If mounting base to a wood floor drill 1 8 inch diameter hole 3 4 inch deep Do not use anchors in wood floors If mounting base to a concrete floor drill with 1 4 inch diam eter concrete drill bit 13 s inches into floor Insert anchors com pletely into holes Reposition heater with base feet over holes Secure base to floor with wood screws See Figure 13 Wood Screw Sheet Metal Screw I l Figure 13 Installing Base Feet 9 fi 107882 01E INSTALLATION Connecting To Gas Supply INSTALLATION Continued CONNECTING TO GAS SUPPLY A WARNING This appliance requires a 3 8 NPT National Pipe Thread inlet connection to the pres sure regulator A WARNING A qualified service person must con nect heater to gas supply Follow all local codes A WARNING For natural gas never connect heater to private non utility gas wells This gas is com monly known as wellhead gas IMPORTANT For natural gas check gas line pressure before connecting heater to gas line Gas line pressure must be no greater than 14 inches of water If gas line pressure is higher heater regulator damage could occur
3. A CAUTION For propane LP gas never connect heater directly to the propane LP supply This heater requires an external regulator not supplied Install the external regulator between the heater and pro pane LP supply For propane LP gas the installer must supply an external regulator The external regulator will reduce incoming gas pressure You must reduce incoming gas pressure to between 11 and 14 inches of water If you do not reduce incoming gas pressure heater regulator damage could occur Install the external regulator with the vent pointing down as shown in Figure 14 Pointing the vent down protects it from freezing rain or sleet External Propane LP Regulator Vent Pointing Down view Figure 14 External Regulator With Vent Pointing Down A CAUTION Use only new black iron or steel pipe Internally tinned copper tubing may be used in certain areas Check your local codes Use pipe of large enough diameter to allow proper gas volume to heater If pipe is too small undue loss of volume will occur L FOr mora 1079 107882 01E 7 KmMation visit www desatech com Typical Inlet Pipe Diameters 20 000 Btu Hr Models 3 8 or greater 30 000 Btu Hr Models 1 2 or greater Installation must include 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 Figure 15 IMP
4. 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 aspace 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 space Rooms communicating 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 tea D esarecn 15 9 SS 107882 01E AIR FOR COMBUSTION AND VENTILATION Determining Fresh Air Flow For Heater Location AIR FOR COMBUSTION AND VENTILATION Continued 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 Space Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x height Length x Width x Height Example Space size 20 ft length x 16 ft width x 8 ft ceiling height 2560 cu ft volume of space cu ft volume of space If additional ventilation to adjoining room is supplied with grills or open ings add the volume of these r
5. Purchaser O Under 20 O20 29 O30 39 O40 49 O50 59 O60 or Over 14 Buyer s total annual household income O Under 15 000 O 15 000 to 19 999 O 20 000 to 34 999 O 35 000 to 49 999 O 50 000 to 74 999 O 75 000 to 99 999 O 100 000 and Over 15 Store where product was purchased Name City State 16 In choosing this product how important were the following Not Important Somewhat Important Very Important Availability Price Brand Name Overall Quality Heat Output Made in USA Warranty Local Service Value for Price Prior Brand Experience Controls Location Thermostat Remote or Manual Operation Ease of Operation Special Features Salesperson s Recommendation Friend Relative s Recommendation Portability Quiet Operation OOWOOO0000000 000000 OOWOVOO0000000 0000000 000000000000000900906009 06 307 Postage Required DESA INTERNATIONAL 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 TAPE PARTS CENTRALS PARTS CENTRAL These Parts Centrals are privately owned businesses They have agreed to support our customer s needs by providing original replacement parts and accessories Baltimore Electric 5 Manila Ave Hamden CT 06514 0322 1 800 397 7553 203 248 7553 Portable Heater Parts 342 N County Rd 400 East Valparaiso IN 46383 9704 219 462 7441 1 888 619 7060 www portableheaterparts com sales portableheaterparts com techservice portable
6. hollow walls wall areas between studs or solid walls concrete or masonry 1 Drill holes at marked locations using 5 16 drill bit For solid walls concrete or masonry drill at least 1 deep Fold wall anchor as shown in Figure 9 3 Insert wall anchor wings first into hole Tap anchor flush to wall 4 For thin walls 1 2 or less insert red key into wall anchor Push red key to pop open anchor wings IMPORTANT Do not hammer key For thick walls over 1 2 thick or solid walls do not pop open wings 5 Place mounting bracket onto wall Line up last hole on each end of bracket with wall anchors 6 Insert mounting screws through bracket and into wall anchors 7 Tighten screws until mounting bracket is firmly fastened to wall Placing Heater On Mounting Bracket 1 Locate two horizontal slots on back panel of heater 2 Place heater onto mounting bracket Slide horizontal slots onto stand out tabs on mounting bracket S39 Figure 10 Popping Open Anchor Wings For Thin Walls Figure 9 Folding Anchor Horizontal Slots Mounting Bracket attached to wall Stand Out Tab g Too Tre 3000 Figure 11 Mounting Heater Onto Mounting Bracket DESA INSTALLATION Installing Heater To Wall Cont Mounting Heater To Floor INSTALLATION Continued Installing Bottom Mounting Screws 1 Locate two bottom mounting holes These holes are near bot tom on back panel of
7. 1 Not enough air 2 Gas regulator defective 3 Clogged or dirty burner W Check burner for dirt and debris If found clean burner see Cleaning and Maintenance page 15 Replace gas regulator Clean burner see Cleaning and Main tenance page 15 Slight smoke or odor during initial operation 1 Residues from manufacturing processes Problem will stop after a few hours of operation Heater produces a whistling noise when burner is lit 1 Turning control knob to HI position when burner is cold 2 Air in gas line 3 Air passageways on heater blocked 4 Dirty or partially clogged burner orifice Turn control knob to LO position and let warm up for a minute Operate burner until air is removed from line Have gas line checked by local natural or propane LP gas company Observe minimum installation clear ances see Figure 4 page 7 Clean burner see Cleaning and Mainte nance page 15 or replace burner orifice White powder residue forming within burner box or on adjacent walls or furniture For more information visit www 1 When heated vapors from furniture pol ish wax carpet cleaner etc may turn into white powder residue a D Turn heater off when using furniture polish wax carpet cleaners or similar products 9 fi 107882 01E TROUBLESHOOTING Continued TROUBLESHOOTING building A WARNING If you smell gas Sh
8. HEATERS DESA International warrants this product to be free from defects in materials and components for two 2 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 Authorized Service Center Warranty part s MUST be obtained through authorized dealers of this product and or DESA International who will provide original factory replacement parts Failure 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 TH
9. IS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO 2 YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE AND DESA INTERNATIONAL S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNATIONAL 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 gives you specific legal rights and you may also have other rights that vary from state to state DESA INTERNATIONAL 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 107882 01 107882 01 Rev E NOT A UPC 09102 For more information visit WWW de itech com For information about this warranty write
10. Keep ignitor cable dry Replace ignitor cable Replace piezo ignitor When ignitor button is pressed there is spark at ODS pilot but no ignition Gas supply turned off or equipment shutoff valve closed Control knob not in PILOT position Control knob not pressed in while in PILOT position Air in gas lines when installed Depleted gas supply propane LP gas only ODS pilot is clogged Gas regulator setting is not correct 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 control knob Re peat igniting operation until air is removed Contact local propane LP gas company Clean ODS pilot see Cleaning and Maintenance page 15 or replace ODS pilot assembly Replace gas regulator ODS pilot lights but flame goes out when control knob is released a POF 11109 information visit www desatech com 107882 01E n A 3 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 Thermocouple connection loose at con trol valve Pilot flame not touching thermocouple which allows thermocouple to cool causing pilot flame to go out This prob lem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS p
11. ORTANT Install an equipment shutoff valve in an accessible location The equipment shutoff valve is for turning on or shutting off the gas to the appliance 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 A WARNING Use pipe joint sealant that is resistant to liquid petroleum LP gas Install sediment trap in supply line as shown in Figure 15 Locate sediment trap where it is within reach for cleaning 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 IMPORTANT Hold the pressure regulator with wrench when connecting it to gas piping and or fittings Do not over tighten pipe connection to regulator The regulator body could be damaged Note Burner bracket not shown for clarity Pressure Regulator 3 8 NPT Pipe Nipple Heater Tee Joint Cabinet Test Reducer ne Joint Union Gauge Bushing to Equipment Connection 1 8 NPT Shutoff Valve Le ua Natural Gas aera a From Gas Meter Tee 5 W C to 10 5 Joint W C Pressure Sediment Pipe ii Propane LP Trap Nipple Minimum Erom External Cap Regulator 11 W C to 14 3 W C Pressure Figure 15 Gas Connection A CSA design certified
12. 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 spaces 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 For more information visit Www de S Ventilation Grills ee Into Adjoining Room Ventilation Option 2 Grills Or into Adjoining Remove Room Door into Option 1 Adjoining Room Option 3 O Figure 2 Ventilation Air from Inside Building aE Ventilated Attic Outlet Air 7 To Attic To Crawl Space Inlet Air Ventilated Inlet Air Crawl Space Figure 3 Ventilation Air from Outdoors satech com 107882 01E INSTALLATION Check Gas Type Installation Items Locating Heater INSTALLATION NOTICE This heater is intended for use as supple mental heat Use this heater along with your primary heating system Do not install this heater as your primary heat source If you have a central he
13. R ea A ee al 24 OWNER S REGISTRATION FORM 0 ee eee eee eee 25 PARTS CENTRALS annnnonaniniini nna tees eeeeaeseeeeaeseeeeaeeaes 27 WARRANTY INFORMATION nsss BACK COVER 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 Surface of heater becomes very hot when running heater Keep children and adults away from hot sur face to avoid burns or clothing ignition Heater will remain hot for a time after shutdown Allow surface to cool before touching Carefully supervise young children when they are in the same room with heater Make sure grill guard is in place before running heater Keep the appliance area clear and free from combus tible materials gasoline and other flammable vapors and liquids 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 Do not place propane LP supply tank s inside any structure Locate propane LP supply tank s outdoors 9901 99 071 107882 01E SAFETY INFORMATION 3 If you smell gas shut off gas supply do not try to light any appliance do not touch any electrical switch do not use any phone in your building immediately call your gas supplier from a neighbor s phone Fol
14. UNVENTED VENT FREE BLUE FLAME GAS HEATER SAFETY INFORMATION AND INSTALLATION MANUAL For more information visit Www d satech com CBN20 CBP20 CBN20T CBP20T CBNS3OT CBP3SOT WARNING Improper installation adjustment alteration service or maintenance can cause injury or property damage Refer to this Do not store or use gasoline or other flammable manual for correct installation and vapors and liquids in the vicinity of this or any Operational procedures For as other appliance sistance or additional information WHAT TO DOIF YOU SMELL GAS consult a qualified installer ser e Do not try to light any appliance vice agency or the gas supplier Do not touch any electrical switch do not use any phone in your building WARNING This is an unvented immediately call your gas supplei mom a gas fired heater It uses air oxy neighbor s phone Follow the gas supplier s in gen from the room in which it is eke i i inati installed Provisions for ad Ifyou cannot reach your gas supplier call the fire equate combustion and veniila department tion air must be provided Refer Installation and service must be performed by a to Air for Combustion and Venti qualified installer service agency or the gas lation section on page 4 of this supplier manual WARNING If the information in this manual is not followed exactly a fire or explosion may result caus ing property damage personal inju
15. as 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 STOP Read the safety information above Make sure equipment shutoff valve is fully open Turn control knob clockwise to the OFF position Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Fol low B in the safety information above If you don t smell gas go to the next step Turn control knob counterclockwise to the PILOT position Press in control knob for five 5 seconds see Fig ure 19 LIGHTING INSTRUCTIONS For more info 107882 01E OPERATING HEATER For Your Safety Read Before Lighting Lighting Instructions Note You may be running this heater for the first time after hooking up to gas supply If so the control knob may need to be pressed in for 30 seconds or more This will al low air to bleed from the gas system If control knob does not pop up when released contact a qualified service person or gas supplier for repairs With control knob pressed in push down and release igni tor button This will light pilot The pilot is attached to the front of burner The pilot can be seen through the glass panel If needed keep pressing ign
16. ate mounting bracket in heater carton Remove mounting bracket from heater carton Figure 6 Mounting Bracket For more information visit www die Removing Front Panel Of Heater 1 Remove the four painted screws two on each side of front panel 2 Pull bottom of front panel forward then out 3 Remove any remaining packaging materials m Figure 7 Removing Front Panel Of Heater Methods For Attaching Mounting Bracket To Wall Only use last hole on each end of mounting bracket to attach bracket to wall These two holes are 14 inches apart from their centers Attach mounting bracket to wall in one of two ways 1 Attaching to wall stud 2 Attaching to wall anchor Attaching to Wall Stud This method provides the strongest hold Insert mounting screws through mounting bracket and into wall studs Attaching to Wall Anchor This method allows you to attach mounting bracket to hollow walls wall areas between studs or to solid walls concrete or masonry Decide which method better suits your needs Either method will provide a secure hold for the mounting bracket Marking Screw Locations 1 Tape mounting bracket to wall where heater will be located Make sure mounting bracket is level A WARNING Maintain minimum clearances shown in Figur
17. ating system you may run system s circulating blower while using heater This will help circulate the heat throughout the house In the event of a power outage you can use this heater as your primary heat source A WARNING A qualified service person must in stall heater Follow all local codes CHECK GAS TYPE Use only 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 INSTALLATION ITEMS Before installing heater make sure you have the items listed below for propane LP gas external regulator supplied by installer piping check local codes sealant resistant to propane LP gas equipment shutoff valve ground joint union sediment trap tee joint pipe wrench for natural gas test gauge connection A CSA design certified equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection The optional CSA design certified equipment shutoff valve can be purchased from your dealer See Accessories page 24 LOCATING HEATER AX WARNING Maintain the minimum clearances shown in Figure 4 If you can provide greater clear ances from floor ceiling and joining wall You can locate heater on the floor away from a wall A wall mounting bracket and floor base stand are included with this heater Determine which method is best f
18. ctions listed under Replacement Parts on page 24 of this manual PART NUMBER FOR CBN20T CBP20T CBN30T CBP30T DESCRIPTION QTY 107882 01E KEY NO OOANOODOAAHRWND PARTS LIST CBN20T CBP20T CBN30T CBP30T 097159 04 107954 01 107879 02 098522 10 107677 01 098260 12 107894 08 098271 09 098249 01 110803 01 110186 01 103446 01 099387 03 103845 06 099066 02 099415 17 NJF 8C 103255 02 103256 02 109303 04 097159 04 107954 01 107879 02 098522 11 107677 01 098260 12 107894 08 098271 09 098249 01 110803 02 110186 01 103446 01 099387 03 103845 05 099066 02 099415 18 NJF 8C 103255 02 103256 02 109303 04 097159 04 107955 01 107879 01 098522 12 107677 01 098260 13 107894 09 098271 09 098249 01 110803 01 110186 01 103447 01 099387 03 103845 08 099066 02 099415 17 NJF 8C 103255 02 103256 02 109303 03 097159 04 107955 01 107879 01 098522 13 107677 01 098260 13 107894 09 098271 09 098249 01 110803 02 110186 01 103447 01 099387 03 103845 07 099066 02 099415 18 NJF 8C 103255 02 103256 02 109303 03 Piezo Ignitor Front Panel Grill Guard Thermostat Gas Valve Glass Retainer Glass Cabinet Deflector Assembly Ignitor Cable Nut M5 ODS Pilot Assembly Thermocouple Kit Burner 3 16 Pilot Tubing Injector Mounting Bracket Gas Regulator Hex Nut 3 8 Outlet Tubing 3 8 Inlet Tubing Baffle Ce Crees Ce Ce COs CG ree C
19. e 8 page 9 If you can provide greater clear ances from floor and joining wall 9901 99 071 107882 01E INSTALLATION Installing Heater To Wall Cont INSTALLATION Continued 2 Mark screw locations on wall see Figure 8 Note Only mark last hole on each end of mounting bracket Insert mounting screws through these holes only 3 Remove tape and mounting bracket from wall 12 14 Min aA A g Only Insert Mounting 18 3 4 Screws Through Last Min P Hole On Each End 4 Floor 30 000 Btu hr Models Lg 14 4 Min Di 4 7 Only Insert Mounting 48 3 4 g Screws Through Last Min gt Hole On Each End 2 4 Floor 20 000 Btu hr Models Figure 8 Mounting Bracket Clearances Attaching Mounting Bracket To Wall Note Wall anchors mounting screws and spacers are in hardware package The hardware package is provided with heater Attaching To Wall Stud Method For attaching mounting bracket to wall studs 1 Drill holes at marked locations using 9 64 drill bit 2 Place mounting bracket onto wall Line up last hole on each end of bracket with holes drilled in wall 3 Insert mounting screws through bracket and into wall studs Tighten screws until mounting bracket is firmly fastened to wall studs a POF 11109 information visit www desatech com 107882 01E Attaching To Wall Anchor Method For attaching mounting bracket to
20. e further questions about installation operation or troubleshooting If so contact DESA International s 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 International s technical service web site at www desatech com SERVICE PUBLICATIONS You can purchase a service manual from the address listed on the back page of this manual Send a check for 5 00 payable to DESA International 9 fi 107882 01E TROUBLESHOOTING Note For additional help visit DESA International s technical service web site at www desatech com Note All troubleshooting items are listed in order of operation TROUBLESHOOTING AX WARNING Turn off and un plug heater and let cool before servicing Only a qualified ser vice person should service and repair heater A CAUTION Never use a wire needle or similar object to clean ODS pilot This can damage ODS pilot unit OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed thereisno 1 Ignitor electrode positioned wrong 1 Replace pilot assembly spark at ODS pilot 2 Ignitor electrode broken 2 Replace pilot assembly 3 Ignitor electrode not connected to igni 3 Reconnect ignitor cable tor cable Ignitor cable pinched or wet Broken ignitor cable Bad piezo ignitor Free ignitor cable if pinched by any metal or tubing
21. e 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 com pressed air in a can You can use a vacuum cleaner in the blow position If using compressed air in a can please follow the direc tions 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 2 Inspect burner pilot for dust and dirt 3 Blow air through the ports slots and holes in the burner 4 Never insert objects into the pilot tube Clean the pilot assembly also A yellow tip on the pilot flame indicates dust and dirt in the pilot assembly There is a small pilot air inlet about two inches from where the pilot flame comes out of the pilot assembly see Figure 25 With the unit off lightly blow air through the air inlet You may blow through a drinking straw if compressed air is not available Pilot Assembly Figure 25 Pilot Inlet Air Propane LP Pilot Shown CABINET Air Passageways e Use a vacuum cleaner or pressurized air to clean Exterior e Use a soft cloth dampened with a mild soap and water mi
22. e the replacement part number For more information visit www desiatech ACCESSORIES Purchase these heater accessories from your local dealer If they can not supply these accessories either contact your nearest Parts Central see page 27 or call DESA International 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 FAN KITS GA3250T For all models Provides better heat distribution Makes heater more efficient Complete installation and operating instructions included Thermostatically controlled blower turns itself on and off as required 9 ff 107882 01E OWNER S REGISTRATION FORM In order to provide better customer service for this and future purchases we recommend that you register your product with us You can register online at www desatech com If access to our website is not available to you please complete this Owner s Registration Form and mail to the address on the back of this owner s manual Please provide the following product information Brand Comfort Glow Vanguard etc Model EFP33PR VTGH33NR etc Date Purchased Note Keep receipt for warranty verification Serial Number 17 0 9 digit number located on product or identification tag First Name Last Name Address City State Zip Country Home Phone _ E Mai
23. ed Shutting Off Burner Only pilot stays lit Turn control knob clockwise lt X to the PILOT position THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermostats Standard thermostats simply turn on and off the burner The thermostat used on this heater senses the room temperature The thermostat adjusts the amount of gas flow to the burner This increases or decreases the burner flame height At times the room may exceed the set temperature If so the burner will shut off The burner will cycle back on when room temperature drops below the set temperature The control knob can be set to any heat level between HI and LO Selecting the HI setting will cause the burner to remain fully on without modulating down in most cases Note The thermostat sensing bulb measures the temperature of air near the heater cabinet This may not always agree with room temperature depending on housing construction instal lation location room size open air temperatures etc Fre quent use of your heater will let you determine your own comfort levels Follow steps 1 through 5 under Lighting Instructions page 13 MANUAL LIGHTING PROCEDURE 1 Remove front panel see Figure 7 page 8 3 With control knob pressed in strike match Hold match to pilot until pilot lights 4 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Now follow st
24. ep 8 under Lighting Instructions page 13 5 Replace front panel For more information visit www desatech INSPECTING HEATER Check pilot flame pattern and burner flame pattern often PILOT FLAME PATTERN Figure 21 shows a correct pilot flame pattern Figure 22 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 22 e turn heater off see To Turn Off Gas to Appliance e see Troubleshooting pages 17 through 19 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 Blue Flame Or Pilot Burner Figure 21 Correct Pilot Flame Pattern Thermocouple g aN Flame or Pilot Burner Figure 22 Incorrect Pilot Flame Pattern oo ff 107882 01E INSPECTING HEATER Continued BURNER FLAME PATTERN A WARNING If yellow tipping occurs your heater could produce increased levels of carbon monoxide NOTICE Do not mistake orange flames with yellow tipping Dirt or other fine particles enter the heater and burn causing brief patches of orange flame Figure 23 shows a correct burner flame pattern Figure 24 shows an incorrect burner flame pattern The incorrect burner flame pattern shows yellow tipping of the
25. equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection Purchase the optional CSA design certified equipment shutoff valve from your dealer See Accessories page 24 INSTALLATION Checking Gas Connections INSTALLATION Continued CHECKING GAS CONNECTIONS A WARNING Test all gas piping and connections for leaks after installing or servicing Correct all leaks at once A WARNING Never use an open flame to check for a leak Apply a noncorrosive leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once A CAUTION For propane LP gas make sure exter nal regulator has been installed between propane LP supply and heater See guidelines under Connecting to Gas Supply page 11 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 con trol valve and equipment shutoff valve from gas supply pip ing 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 com pressed air Check all joints of gas supply piping system Apply a noncorrosive leak detection fluid to all joints B
26. f local codes use the latest edition of 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 FOr 01979 inio 107882 01E mation visit www desatech com SAFETY INFORMATION LOCAL CODES PRODUCT IDENTIFICATION UNPACKING PRODUCT FEATURES PRODUCT IDENTIFICATION Control Knob amp Ignitor Button not seen from this view Grill Guard Mil Glass Panel N Heater Front eee oe Figure 1 Vent Free Gas Heater UNPACKING 1 Remove heater from carton 2 Remove all protective packaging applied to heater for shipment 3 Check heater for any shipping damage If heater is damaged promptly return to dealer where you bought heater PRODUCT FEATURES SAFETY DEVICE This heater has a pilot with an Oxygen Depletion 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 PIEZO IGNITION SYSTEM This heater has a piezo ignitor This system requires no matches batteries or other sources to light heater THERMOSTATIC HEAT CONTROL Thermostat models have a thermostat sensing bulb and a control valve This results in the greatest heater comfor
27. flame It also shows the flame higher than 1 2 the glass panel height If burner flame pattern is incorrect as shown in Figure 24 e turn heater off see To Turn Off Gas To Appliance page 14 e see Troubleshooting pages 17 through 19 Blue Flame AOE Glass A cion Figure 23 Correct Burner Flame Pattern Yellow Tipping J V vy ow hp Glass Height Figure 24 Incorrect Burner Flame Pattern CLEANING AND MAINTENANCE A WARNING Turn off heater and let cool before cleaning A CAUTION You must keep control areas burner 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 bedding material pet hair etc Por 10979 information visit www desatech com 107882 01E INSPECTING HEATER Burner Flame Heater CLEANING AND MAINTENANCE ODS Pilot and Burner Cleaning Burner Pilot Air Inlet Cabinet ODS PILOT AND BURNER e Use a vacuum cleaner pressurized air or small soft bristled brush to clean CLEANING BURNER PILOT AIR INLET 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 and lint Clean these air inlet holes prior to each heating season Blocked air holes will creat
28. heater see Figure 12 Mark screw locations on wall Remove heater from mounting bracket If installing bottom mounting screws into hollow or solid wall install wall anchors Follow steps 1 through 4 under Attaching To Wall Anchor Method page 9 If installing bottom mounting screw into wall stud drill holes at marked locations using 9 64 drill bit Replace heater onto mounting bracket Place spacers between bottom mounting holes and wall anchor or drilled hole Hold spacer in place with one hand With other hand insert mounting screw through bottom mounting hole and spacer Place tip of screw in opening of wall anchor or drilled hole Tighten both screws until heater is firmly secured to wall Do not over tighten Note Do not replace front panel at this time Replace front panel after making gas connections and checking for leaks see pages 11 and 12 P Front View Heater wall Spacer Side View Figure 12 Installing Bottom Mounting Screws For more information visit www desiatech MOUNTING HEATER TO FLOOR Mounting Base Feet to Heater 1 3 4 Lay heater cabinet on its back on a table with the heater bot tom overhanging the table edge Align holes in base foot with mounting holes on bottom of cabinet see Figure 13 Secure base foot to heater using sheet metal screws Repeat for other side Mounting Base Feet to Floor Where required by local code
29. heater pilot and burner must be at least 18 inches above floor locate heater where moving vehicle will not hit it For convenience and efficiency install heater e where there is easy access for operation inspection and service e in coldest part of room An optional fan kit is available from your dealer See Accessories page 24 If planning to use fan locate heater near an electrical outlet DESA INSTALLATION Thermostat Sensing Bulb Installing Heater To Wall INSTALLATION Continued THERMOSTAT SENSING BULB The thermostat sensing bulb has been placed inside the heater for protection during shipping Locating Thermostat Sensing Bulb for thermostat applications 1 Remove front panel of heater see Figure 7 2 Locate thermostat sensing bulb just under burner assembly IMPORTANT Attach thermostat sensing bulb to back of heater for proper operation Attaching Thermostat Sensing Bulb 1 Remove thermostat sensing bulb from holders inside heater Route through slot opening in bottom of heater 2 Place clamp on thermostat sensing bulb as shown in Figure 5 Clamp is provided in hardware package 3 Snap clamp into upper mounting hole as shown in Figure 5 Mounting hole is located on lower left edge on back of heater Make sure the thermostat sensing bulb is pointing up Thermostat Sensing Bulb Figure 5 Attaching Thermostat Sensing Bulb INSTALLING HEATER TO WALL Mounting Bracket Loc
30. heaterparts com FBD 1349 Adams Street Bowling Green KY 42103 3414 270 846 1199 1 800 654 8534 Fax 1 800 846 0090 franktalk aol com For Inora jmi 107882 01E Master Parts Dist 1251 Mound Ave NW Grand Rapids MI 49504 2672 616 791 0505 1 800 446 1446 www nbmc com Washer Equipment Co 1715 Main Street Kansas City MO 64108 2195 KS MO AR 816 842 3911 www washerparts com East Coast Energy 707 Broadway W Long Branch NJ 07764 1542 732 870 8809 1 800 755 8809 www njplaza com ecep Dayton Hardware P O Box 275 North Dayton Station Dayton OH 45404 0275 937 258 3721 OHIO only 1 800 762 3426 Ormation visit www desatech com Halco Enterprises 208 Carter Drive Unit 21 West Chester PA 19382 4500 610 430 7717 1 800 368 0803 www halcoenterprises com Laporte s Parts amp Service 2444 N 5th Street Hartsville SC 29550 7704 843 332 0191 Parts Department Cans Unlimited P O Box 645 Taylor SC 29687 0013 803 879 3009 1 800 845 5301 cuisales aol com DESA 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 RESIDENTIAL GAS
31. ilot Thermocouple damaged Control valve damaged Press in control knob fully 2 After ODS pilot lights keep control knob pressed in 30 seconds Wait one minute for safety interlock sys tem to reset Repeat ignition operation Fully open equipment shutoff valve Hand tighten until snug then tighten 1 4 turn more A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 15 or replace ODS pilot assembly Replace pilot assembly Replace control valve DESA TROUBLESHOOTING TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner does not light after ODS pilot is lit 1 Burner orifice is clogged 2 Inlet gas pressure is too low 1 2 Clean burner see Cleaning and Mainte nance page 15 or replace burner orifice Contact local natural or propane LP gas company Delayed ignition of burner 1 Manifold pressure is too low 2 Burner orifice is clogged Contact local natural or propane LP gas company Clean burner see Cleaning and Mainte nance page 15 or replace burner orifice Burner backfiring during combustion 1 Burner orifice is clogged or damaged 2 Burner damaged 3 Gas regulator defective Clean burner see Cleaning and Mainte nance page 15 or replace burner orifice Replace burner Replace gas regulator Yellow flame during burner combustion
32. ion grills between rooms See Ventilation Air From Inside Building page 6 B Vent room directly to the outdoors See Ventilation Air From Out doors page 6 C Install a lower Btu Hr heater 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 unconfined space You will need no additional fresh air ventilation A WARNING If the area in which the heater may be operated is smaller than that defined as an uncon fined space or if the building is of unusually tight construction provide adequate combustion and ven tilation air by one of the methods described in the National Fuel Gas Code ANSI Z223 1 NFPA 54 Sec tion 5 3 or applicable local codes DESA AIR FOR COMBUSTION AND VENTILATION Ventilation Air AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space When ventilating to an adjoining unconfined space you must provide two permanent openings one within 12 of the ceiling and one within 12 of the floor on the wall connecting the two spaces see options 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 NFPA 54 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts Ventilation Air From
33. itor button until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 17 through 19 Also contact a qualified service per son or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 14 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob If control knob does not pop up 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 before lighting pilot again Turn control knob counterclockwise to desired heating level The main burner should light Set control knob to any heat level between HI and LO A CAUTION Do not try to adjust heating levels by using the equipment shutoff valve ation visit www desatech com Ignitor Button Control Knob ORE IGNITOR Figure 19 Control Knob In The OFF Position Thermocouple Figure 20 Pilot actual pilot may vary DESA OPERATING HEATER To Tum Off Gas To Appliance Thermostat Control Manual Lighting Procedure INSPECTING HEATER Pilot Flame Pattern OPERATING HEATER Continued TO TURN OFF GAS Shutting Off Heater 1 Turn control knob clockwise ZN to the OFF position 2 Turn off all electric power to the appliance if service is to be perform
34. l Please answer the following questions to register your product with DESA International 1 Where will the product be used O Living Family Room O Office Warehouse O Utility Shed Outbuilding Garage Bedroom OBathroom O Other If you bought this product yourself did you plan to purchase this type of product before going into the store O Yes O No Who selected the product O Male O Female O Both 4 What is the population of your area O Under 10 000 O 10 000 to 25 000 O 25 000 to 50 000 O 50 000 to 100 000 O 100 000 to 250 000 Over 250 000 5 What is your primary source of heat O Propane LP Gas O Fuel Oil Wood ONaturalGas O Electric O Other 6 How was the product installed O Professional Installer Self O Other 7 Cost of product excluding sales tax 8 Cost to install product 9 Type of store where product was purchased O Hardware O Propane Dealer O Natural Gas Utility Co Home Center Builder s Supply O Fireplace or Hearth Shop O Farm Store O Other 10 What motivated you to buy this product Sudden Cold Weather Replace Older Model O D I Y Home Project O Emergency Back Up Heat O Heater was on Sale O Energy Savings High Efficiency Construction Project O Other 11 How did you learn about this product brand O Advertising O Relative or Friend Store Display O Other 12 Level of Education of Purchaser O Some High School Completed High School Completed College O Completed Graduate School 13 Age of
35. low the gas supplier s instructions if you cannot reach your gas supplier call the fire department 4 This heater shall not be installed in a bedroom or bathroom 5 This heater needs fresh outside air ventilation to run properly This heater has an Oxygen Depletion Sensing ODS safety shutoff system The ODS shuts down the heater if not enough fresh air is available See Air for Combustion and Ventilation pages 4 through 6 6 Keep all air openings in front and bottom of heater clear and free of debris This will insure enough air for proper combustion 7 If heater shuts off do not relight until you provide fresh out side air If heater keeps shutting off have it serviced 8 Do not run heater e where flammable liquids or vapors are used or stored e under dusty conditions 9 Do not use heater if any part has been under water Immedi ately call a qualified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water 10 Turn off and let cool before servicing Only a qualified service person should service and repair heater 11 Operating heater above elevations of 4 500 feet could cause pilot outage 12 To prevent performance problems do not use propane LP fuel tank of less than 100 Ibs capacity 13 Provide adequate clearances around air openings LOCAL CODES Install and use heater with care Follow all local codes In the absence o
36. ment Shutoff Valve TAS N hae Closed Figure 16 Equipment Shutoff Valve Thermostat Gas Valve Gas Meter Equipment Shutoff Valve vy Figure 17 Checking Gas Joints for Natural Gas Th Propane LP Supply Tank Lae Equipment Shutoff Valve Figure 18 Checking Gas Joints for Propane LP Gas 9901 99 071 107882 01E OPERATING HEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not follow these instructions exactly a fire or explosion may result causing prop erty damage personal injury or loss of life A B Saas 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 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 de partment 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 techni cian or g
37. n classifications 1 Unusually Tight Construction 2 Unconfined Space 3 Confined Space The information on pages 4 through 6 will help you classify your space and provide adequate ventilation Unusually Tight Construction The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air For more information visit wwwide Unusually tight construction is defined as construction where a walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm 6x10 kg per pa sec m or less with openings gasketed or sealed and b weather stripping has been added on openable win dows 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 6 If your home does not meet all of the three criteria above proceed to Determining Fresh Air Flow For Heater Loca tion page 5 Confined and Unconfined Space The National Fuel Gas Code ANSI Z223 1 NFPA 54 defines a confined space as a space whose volume is less than
38. ocal natural or propane LP gas company Clean ODS pilot see Cleaning and Maintenance page 15 Gas odor even when control knob is in OFF position Gas leak See Warning statement at top of page Control valve defective Locate and correct all leaks see Check ing Gas Connections page 12 Replace control valve Gas odor during combustion Foreign matter between control valve and burner Gas leak See Warning statement at top of page Take apart gas tubing and remove for eign matter Locate and correct all leaks see Check ing Gas Connections page 12 Moisture condensation noticed on windows For more inf rmation visit www desatech com 107882 01E Not enough combustion ventilation air Refer to Air for Combustion and Venti lation requirements page 4 DESA ILLUSTRATED PARTS BREAKDOWN CBN20 CBP20 ILLUSTRATED PARTS BREAKDOWN CBN20 CBP20 15 9 SS 1 Ly S c 2 J e hon e Ge 9 hn e E e LL 107882 01E PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 24 of this manual POF 11109 information visit www desatech com 107882 01E PARTS LIST CBN20 CBP20 NO CBN20 060 42 5 0000
39. ooms 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 Maximum 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 heater Btu Hr Gas water heater Btu 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 Direct vent draws com bustion air from the outdoors and vents to the outdoors Example Gas water heater 40 000 Btu Hr Vent free heater 20 000 Btu Hr Total 60 000 Btu Hr For more info 107882 01E rmation visit www desatech com 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 Example 51 200 Btu Hr maximum the space can support 60 000 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 maximum Btu Hr the space can support You must provide additional fresh air Your options are as follows A Rework worksheet adding the space of an adjoining room If the extra space provides an unconfined space remove door to adjoining room or add ventilat
40. or your application For more info 107882 01E mmation visit www desatech com A WARNING Never install the heater in a bedroom or bathroom in a recreational vehicle where curtains furniture clothing or other flam mable objects are less than 36 inches from the front top or sides of the heater as a fireplace insert in high traffic areas in windy or drafty areas A CAUTION This heater creates warm air currents These currents move heat to wall surfaces 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 fluids oil or kerosene lamps etc in the air exist may discolor walls or cause odors ges ___ CEILING co 6 Minimum Minimum From Sides Of Heater Left Right Side Side 2 Minimum To Top Surface Of Carpeting Tile Or Other Combustible Material Figure 4 Mounting Clearances As Viewed From Front of Heater IMPORTANT Vent free heaters add moisture to the air Although this is beneficial installing heater in rooms without enough venti lation air may cause mildew to form from too much moisture See Air for Combustion and Ventilation pages 4 through 6 If high humidity is experienced a dehumidifier may be used to help lower the water vapor content in the air A CAUTION If you install the heater in a home garage
41. rees Cs Cos CG Ss Coes Cs Ce PARTS AVAILABLE NOT SHOWN 100642 03 105345 01 107888 01 109483 01 GA4550 100642 03 105345 01 107888 01 109483 01 GA4550 Not a field replaceable part FOr 01979 inio mation visit www desatech com 100642 03 105345 01 107888 01 109483 01 GA4550 100642 03 105345 01 107888 01 109483 01 GA4550 Hardware Assembly Cable Tie Control Position Label Lighting Instruction Plate Base Kit DESA REPLACEMENT PARTS ACCESSORIES 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 International s Technical Service Department at 1 866 672 6040 When calling DESA International have ready e your name e your address e model and serial numbers of your heater e how heater was malfunctioning e type of gas used propane LP or natural gas e purchase date Usually we will ask you to 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 either contact your nearest Parts Cen tral see page 27 or call DESA International at 1 866 672 6040 for referral information When calling DESA International have ready e model number of your heater
42. rly signs of carbon monoxide poisoning resemble the flu with headaches dizziness or nausea If you have these signs the heater may not be working properly Get fresh air at once Have heater 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 Gas Natural and propane LP gases are fuel gases Fuel gases are odorless An odor making agent are added to fuel gases The odor helps you detect a fuel gas leak However the odor added to fuel gas can fade Fuel 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 heater A WARNING Any change to this heater or its controls can be dangerous A WARNING Do not use any accessory not ap proved for use with this heater For more information visit WWW C SERVICE HINTS ivetecescys terteseeces annia en nii 16 TECHNICAL SERVICE sssssessesesssssersrerisrerisresrerrsrnsrerrernernrenrnet 16 SERVICE PUBLICATIONS ssssesessessesssneresrerisrerrernsrnrrernernrrernens 16 TROUBLESHOOTING o eee eee eee tee a N aE 17 ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST 20 REPLACEMENT PARTS 0 eceeseesee eee eee cesses eeeeeeeeeaeeeeeeaes 24 AGCESSORIES csc ced e
43. ry or loss of life This appliance may be installed in an aftermarket permanently located manufactured mobile home where not prohibited 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 Save this manual for future reference DESA TABLE OF CONTENTS SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION 0 c cecece cesses eeeeeeeeeeteeeeeteaeeeeeeaes 2 LOCAL CODES 25 fei eth eh Soa tl Le ein 3 PRODUCT IDENTIFICATION eee eee eee certs teeter tee teae 3 UNPACKING i ir sees thee a aa ta aar E og ar EA E Ea 3 PRODUCT FEATURES paap peaini eta a ke aa 3 AIR FOR COMBUSTION AND VENTILATION sesoses 4 INSTALLATION isien aiina aai 7 OPERATING HEATER iisipin 13 INSPECTING HEATER satiran aanita 14 CLEANING AND MAINTENANCE sssssesesseeessrrerrererrsrnerrrrerens 15 SPEGIFIGATIONS aa arara aa aa aape anaren Giada Maen ied 16 SAFETY INFORMATION Awwarnines IMPORTANT Read this owner s manual carefully and completely before trying to assemble operate or ser vice this heater Improper use of this heater can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning A DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Ea
44. t This can also result in lower gas bills DESA AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation AIR FOR COMBUSTION AND VENTILATION A WARNING This heater shall not be installed in a confined space or unusually tight construction un less provisions are provided for adequate combustion and ventilation air Read the following instructions to insure proper fresh air for this and other fuel burning appliances in your home 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 efficient 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 2223 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation All spaces in homes fall into one of the three following ventilatio
45. ubbles 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 2 Close equipment shutoff valve see Figure 16 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 com pressed air Check all joints from gas meter for natural gas see Figure 17 or propane LP supply tank for propane LP gas to equipment shutoff valve see Figure 18 Apply a noncorrosive leak de tection fluid to all joints Bubbles forming show a leak Correct all leaks at once For more information visit www de Pressure Testing Heater Gas Connections 1 2 Open equipment shutoff valve see Figure 16 For natural gas open main gas valve located on or near gas meter For propane LP gas open propane LP supply tank valve Make sure control knob of heater is in the OFF position Check all joints from equipment shutoff valve to thermostat gas valve see Figure 17 or 18 Apply a noncorrosive leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once Light heater see Operating Heater page 13 Check all other internal joints for leaks Turn off heater see To Turn Off Gas to Appliance page 14 Replace front panel t Open Equip
46. ut off gas supply Do 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 Follow 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 OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Heater produces a clicking ticking noise just after burner is lit or shut off 1 Metal expanding while heating or con tracting while cooling 1 This is common with most heaters If noise is excessive contact qualified ser vice person Heater produces unwanted odors W Heater burning vapors from paint hair spray glues etc see IMPORTANT statement above Low fuel supply propane LP gas only Gas leak See Warning statement at top of page Ventilate room Stop using odor caus ing products while heater is running Refill supply tank Locate and correct all leaks see Check ing Gas Connections page 12 Heater shuts off in use ODS operates Not enough fresh air is available Low line pressure ODS pilot is partially clogged Open window and or door for ventilation Contact l
47. xture Wipe the cabinet to remove dust DESA SPECIFICATIONS SERVICE HINTS TECHNICAL SERVICE SERVICE PUBLICATIONS SPECIFICATIONS Btu Variable Type Gas Ignition Pressure Regulator Setting Inlet Gas Pressure in of water Maximum Minimum Dimensions Inches H x W x D Heater Includes knobs amp grill Carton Weight pounds Heater Shipping Btu Variable Type Gas Ignition Pressure Regulator Setting Inlet Gas Pressure in of water Maximum Minimum Dimensions Inches H x W x D Heater Includes knobs amp grill Carton Weight pounds Heater Shipping SERVICE HINTS CBN20 CBN20T 10 000 20 000 Natural Only Piezo 3 W C 10 5 4 26 25 x 18 25 x7 28 25 x 21 25 x9 20 25 CBP20 CBP20T 10 000 20 000 Propane LP Only Piezo 8 W C 14 1 1 n 26 25 x 18 25 x7 28 25 x 21 25x 9 20 25 When Gas Pressure Is Too Low e pilot will not stay lit e burner will have delayed ignition e heater will not produce specified heat e propane LP gas supply may be low You may feel your gas pressure is too low If so contact your local natural or propane LP gas supplier For more information visit www desiatech CBN30T 15 000 30 000 Natural Only Piezo 3 W C 10 5 4 26 25 x 25 75 x7 28 25 x 29 x9 28 33 CBP30T 15 000 30 000 Propane LP Only Piezo 8 W C 14 1 1 26 25 x 25 75 x7 28 25 x 29 x9 28 33 TECHNICAL SERVICE You may hav
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