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Desa CRN30 Gas Heater User Manual

1. ODS Pilot Burner Assembly CRP26 and CRN30 28 www desatech com 107883 01H PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 23 of this manual KEY PART NUMBER NO CRP16 CRN18 CRP26 CRN30 DESCRIPTION 110803 02 110803 03 110803 02 110803 03 ODS Pilot 110186 01 110186 01 110186 01 110186 01 Thermocouple Kit 098200 03 098200 03 098200 03 098200 03 Control Valve Bracket 099387 11 099387 11 105050 02 105050 02 Pilot Tubing 099218 08 099218 08 099218 09 099218 09 Burner 098508 01 098508 01 098508 01 098508 01 Valve Retainer Nut 099056 25 099056 24 099056 25 099056 24 Injector Plaques A amp C 099056 01 099056 02 099056 01 099056 02 Injector Plaque B 103844 01 103844 01 100747 01 100747 01 Control Valve 103352 03 103352 03 103353 04 103353 04 Tubing Valve to Plaque A 103352 04 103352 04 103353 05 103353 05 Tubing Valve to Plaque B L 103353 06 103353 06 Tubing Valve to Plaque C 1 2 3 4 5 6 7 8 f replacing ODS pilot and your model is pre 2002 your part number will be 099059 07 for natural gas models 103594 04 for propane LP models The thermocouple part number will be 098514 01 for both gases The electrode part number will be 098594 01 f
2. Front Panel 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 where you bought heater PRODUCT FEATURES 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 IGNITION SYSTEM This heater has either a piezo ignitor or electronic ignitor to light heater fuel supply THERMOSTATIC HEAT CONTROL Thermostat Models Only Thermostat models have a thermostat sensing bulb and a control valve This results in the great est heater comfort This can also result in lower gas bills 4 www desatech com 107883 01H AIR FOR COMBUSTION AND VENTILATION WARNING This heater shall not be installed in a confined space or unusually tight con struction unless provisions are provided for adequate combus tion 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 an
3. p Ventilated Outlet Attic Air N Outlet Air To Attic p To l rawl EL space Inlet Dis Air i Ventilated Inlat Air Crawl Space Figure 3 Ventilation Air from Outdoors INSTALLATION NOTICE This heater is intended for use as supplemental heat Use this heater along with your primary heating system Do not install this heater 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 A WARNING A qualified ser vice person must install heater Follow all local codes CHECK GAS TYPE Use only the correct type of gas natural or pro pane 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 WARNING This appliance is equipped for natural or pro pane LP gas Field conversion is not permitted INSTALLATION ITEMS Before installing heater make sure you have the items listed below forpropane 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 ACSA des
4. This appliance is only for use with the type of gas indicated on the rating plate This ap pliance is not convertible for use with other gases Do not place propane LP supply tank s in side any structure Locate propane LP supply tank s outdoors This heater shall not be installed in a bedroom or bathroom 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 Follow the gas supplier s instructions f you cannot reach your gas supplier call the fire department 107883 01H www desatech com 3 SAFETY INFORMATION Continued 5 Always run heater with plaque control knob at the 1 2 3 or 4 locked positions Never set control knob between locked positions Poor combustion and higher levels of carbon monoxide may result 6 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 page 5 7 Keep all air openings in front and bottom of heater clear and free of debris This will insure enough air for proper combustion 8 If heater shuts off do not relight until you provide fresh outside air If heater keeps shutting off have it serviced 9 Do not run he
5. Shutting Off Burner Only pilot stays lit Turn thermostat control knob clockwise N to the PILOT position 16 www desatech com 107883 01H OPERATING HEATER Continued THERMOSTAT 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 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 2 comfort level between HI and LO All plaques will turn off and on Note The thermostat sensing bulb measures the temperature of air near the heater cabinet This may not always agree with room tem perature depending on housing construction installation location room size open air tem peratures etc Frequent use of your heater will let you determine your own comfort levels mud MANUAL LIGHTING PROCEDURE 1 Remove front panel see Figure 7 page 8 2 Follow steps 1 through 5 under Lighting Instructions page 16 3 With thermostat control knob pressed in strike match Hold match to pilot until pilot lights 4 Keep thermostat control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Follow step 8 under Lighting Instructions page 16 5 Replace front panel INSPECTING
6. ILLUSTRATED PARTS BREAKDOWN CABINET BODY MODELS CRT26PT AND CRT30NT Install Battery According To This Illustration CO Determine N which ignitor your heater 5 uses AA Battery AAA Positive Battery UP f b 26 www desatech com 107883 01H PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 23 of this manual KEY PART NUMBER NO CRT26PT CRT30NT 107879 01 107879 01 102394 02 102394 02 107894 05 107894 05 111435 01 111435 01 099066 02 099066 02 098271 11 098271 11 099415 18 099415 19 104819 02 104819 02 098522 24 098522 24 109303 03 109303 03 103256 02 103256 02 1 2 3 4 5 6 7 8 9 DESCRIPTION 107955 03CV 107955 03CV Front Panel Grill Guard Thermostat Valve Mounting Bracket Reflector Assembly Cabinet Back Panel Electronic Ignitor Mounting Bracket Ignitor Cable Gas Regulator Regulator Bracket Thermostat Gas Valve Baffle Inlet Tube PARTS AVAILABLE NOT SHOWN 100642 03 100642 03 109483 01 109483 01 105345 01 105345 01 107888 01 107888 01 GA4550 GA4550 Not a field replaceable part Hardware Assembly Lighting Instruction Plate Cable Tie Control Position Label Base Kit 107883 01H www desatech com 27 ILLUSTRATED PARTS BREAKDOWN BURNER ASSEMBLY MODELS CRP16 CRN18 CRP26 AND CRN30 P ON
7. deep 2 Fold wall anchor as shown in Figure 9 page 10 107883 01H www desatech com 9 INSTALLATION Continued 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 3 Figure 9 Folding Anchor ES CHR Figure 10 Popping Open Anchor Wings For Thin Walls 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 mount ing bracket Horizontal Slots Mounting Bracket attached to wall Pee Figure 11 Mounting Heater Onto Mounting Bracket Installing Bottom Mounting Screws 1 Bop Locate two bottom mounting holes These holes are near bottom on back panel of 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 Artaching To Wall Anchor
8. 23 of this manual PART NUMBER KEY CRP16 CRP16T CRP26 CRP26T NO CRN18 CRN18T CRN30 CRN30T DESCRIPTION QTY 107954 01 107879 02 107894 04 097159 13 099066 02 098271 09 098462 01 098325 01 098354 03 099415 18 099415 19 104819 02 109303 04 107660 01 PARTS AVAILABLE NOT SHOWN 100642 03 109483 01 105345 01 107888 01 GA4550 Not a field replaceable part 107883 01H 107954 01 107879 02 102394 02 107894 04 097159 13 099066 02 098271 09 099415 18 099415 19 104819 02 098522 24 109303 04 103256 02 100642 03 109483 01 105345 01 107888 01 GA4550 107955 01 107879 01 107894 05 097159 12 099066 02 098271 09 098462 01 098325 01 098354 03 099415 18 099415 19 104819 02 109303 03 107660 03 100642 03 109483 01 105345 01 107888 01 GA4550 www desatech com 107955 01 107879 01 102394 02 107894 05 097159 12 099066 02 098271 09 099415 18 099415 19 104819 02 098522 24 109303 03 103256 02 100642 03 109483 01 105345 01 107888 01 GA4550 Front Panel Grill Guard Thermostat Valve Mounting Bracket Reflector Assembly Cabinet Back Panel Piezo Ignitor Mounting Bracket Ignitor Cable Control Rod Assembly Roll Pin Control Knob Gas Regulator Natural Gas Gas Regulator Propane LP Regulator Bracket Thermostat Gas Valve Baffle Inlet Tubing Hardware Assembly Lighting Instruction Plate Cable Tie Control Position Label Base Kit
9. HEATER Check pilot flame pattern and burner flame pat tern often PILOT FLAME PATTERN Figure 25 shows a correct pilot flame pattern Figure 26 shows an incorrect pilot flame pattern The incor rect 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 26 turn heater off see To Turn Off Gas to Appli ance page 15 depending on your model see Troubleshooting page 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 Blue Flame Pilot Burner Thermocouple Figure 25 Correct Pilot Flame Pattern Yellow Flame Thermocouple Figure 26 Incorrect Pilot Flame Pattern BURNER FLAME PATTERN Figure 27 shows a correct burner flame pattern Fig ure 28 shows an incorrect burner flame pattern If burner flame pattern is incorrect as shown in Figure 28 turn heater off see To Turn Off Gas to Appli ance page 15 depending on your model see Troubleshooting page 19 T Figure 27 Correct Burner Flame Pattern Figure 28 Incorrect Burner Flame Pattern 107883 0
10. battery is installed correctly When ignitor button is pressed in there is a spark at ODS Pilot but no ignition 1 Gas supply turned off or equip ment shutoff valve closed Control knob not fully pressed in while pressing ignitor button non thermostat models only Thermostat control knob not fully pressed in while press ing ignitor button thermostat models only Air in gas lines when installed Depleted gas supply propane LP gas ODS pilot is clogged Gas regulator setting is not correct Thermostat control knob is not in pilot position thermostat models only Turn on gas supply or open equipment shutoff valve Turn to PILOT IGN position Fully press in control knob while pressing ignitor button non thermostat models only Fully press in thermostat control knob while pressing ignitor but ton thermostat models only Continue holding down con trol knob Repeat igniting op eration until air is removed Contact local propane LP gas company Clean ODS pilot see Cleaning and Maintenance page 18 or replace ODS pilot assembly Replace gas regulator Turn thermostat control knob to pilot position 107883 01H www desatech com OBSERVED PROBLEM Continued POSSIBLE CAUSE TROUBLESHOOTING REMEDY ODS pilot lights but flame goes out when control knob is released T 2 Control knob not fully pressed in Control knob not pr
11. in desired loca tion Mark holes for drilling Remove heater with base For carpeted floors make a small cut with a sharp knife at marked locations prior to drill ing 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 diameter concrete drill bit 1 s inches into floor Insert anchors completely into holes Reposition heater with base feet over holes Secure base to floor with wood screws See Figure 13 Base Foot Sheet Metal Screw _ l Figure 13 Installing Base Feet CONNECTING TO GAS SUPPLY AX WARNING This appliance requires a 3 8 NPT National Pipe Thread inlet connection to the pressure regulator WARNING A qualified service person mustconnectheaterto gas supply Follow all local codes A WARNING Fornaturalgas never connectheaterto private non utility gas wells This gas is commonly 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 10 5 inches of water If gas line pressure is higher heater regula tor damage could occur AX CAUTION For propane LP gas never connect heater di rectly to the propane LP supply This heater requires an external regulator not supplied Install the external regulator between the heater and propane LP
12. sc ceticesteet ysteesccancyeeseveseenaseecien A ACCESSES eroe cente eter terere 23 Air For Combustion and Ventilation 5 Service Publications err 23 Installation 5 nne 7 Replacement Parts eee 23 Operating Heater eee 14 Illustrated Parts Breakdown and Parts List 24 Inspecting Heater ssseeseseeesss 17 Pans Central iunii 31 Cleaning and Maintenance 18 Warranty Information Back Cover 2 www desatech com 107883 01H SAFETY INFORMATION A WARNING This productcon 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 operate or service this heater Improper use of this heater can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning AX DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning resemble the flu with head aches 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 lu
13. 1H www desatech com 17 CLEANING AND MAINTENANCE WARNING Turn off heater and let cool before cleaning A CAUTION You must keep control areas burner and circu lating 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 clean ing due to excessive lint from carpeting bedding material pet hair etc AX WARNING Failure to keep the primary air opening s of the burner s clean may result in sooting and property damage ODS PILOT AND BURNER e Use a vacuum cleaner pressurized air or small soft bristled brush to clean 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 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 the blow position If using com pressed
14. D 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 TWO 2 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 gives 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 107883 01 107883 01 Rev H Patent Pending NOTAUPC 08 04
15. Locate and correct all leaks see Checking Gas Connec tions page 12 Replace control valve 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 12 Moisture condensation noticed on windows Not enough combustion ven tilation air Refer to Fresh Air for Com bustion and Ventilation re quirements page 5 107883 01H www desatech com 21 SPECIFICATIONS CRN18 CRN18T CRN30 CRN30T CRT30NT Btu Variable 6 600 12 000 18 000 6 600 18 000 30 000 6 600 18 000 30 000 Type Gas Natural Only Natural Only Natural Only Ignition Piezo Piezo Electronic Pressure Regulator Setting 6 W C 6 W C 6 W C Inlet Gas Pressure in of water Maximum 10 5 10 5 10 5 Minimum 7 Te 7 Dimensions Inches H x W x D Heater 26 25x1825 x 7 26 25 x 25 75 x 7 26 25 x 25 75 x T Carton 28 25 x 21 25 x9 28 25 x 29 x9 28 25 x 29 x9 Weight pounds Heater 20 28 28 Shipping 25 33 33 Note Dimensions listed are outer most points on the heater includes control knobs and grill For purposes of input adjustment CRP16 CRP16T CRP26 CRP26T CRT26PT Btu Variable 6 000 11 000 16 000 6 000 16 000 26 000 6 000 16 000 26 000 Type Gas Propane LP Only Propane LP Only Propane LP Only Ignition Piezo Piez
16. 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 connec tions and checking for leaks see page 12 Li H Front View Heater Wall 9 Quum Spacer Side View Figure 12 Installing Bottom Mounting Screws 10 www desatech com 107883 01H INSTALLATION Continued MOUNTING HEATER TO FLOOR Mounting Base Feet to Heater f Ww 4 Lay heater cabinet on its back on a table with the heater bottom 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 l Remove front cover see Removing Front Panel of Heater page 8 Position heater with base feet
17. UNVENTED VENT FREE INFRARED GAS HEATER SAFETY INFORMATION AND INSTALLATION MANUAL We recommend that our A KA products be installed and 2 S serviced by professionals who 3 are certified in the U S by NFI und National Fireplace Institute CERTIFIED www nficertified org Model CRN30 Shown CRP16 CRP16T CRN18 CRN18T CRP26 CRP26T CRT26PT CRN30 CRN30T CRT30NT 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 supplierfrom 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 Save this manual for future reference For more information visit www desatech com WARNING Improper installation adjustment altera tion service or maintenance can cause injury or prop erty damage Referto this manualfor correct installation and operational procedures For assistance or addi tional information consult a qualified installer servi
18. 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 impu rities such as but not limited to tobaccosmoke aromatic candles cleaning fluids oil or kerosene lamps etc in the air exist may discolor walls or cause odors IMPORTANT Vent free heaters add moisture to the air Although this is beneficial installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture See Air for Combustion and Ventilation page 5 If high humid ity is experienced a dehumidifier may be used to help lower the water vapor content in the air For convenience and efficiency install heater where there is easy access for operation inspec tion and service incoldest part of room An optional fan kit is available from your dealer See Accessories page 23 If planning to use fan locate heater near an electrical outlet THERMOSTAT SENSING BULB Thermostat Models Only The thermostat sensing bulb has been placed below the heater 1 Place clamp on thermostat sensing bulb as shown in Figure 5 Clamp is provided in hardware package 2 Snapclampinto 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 Clamp 7 Figure 5 Attaching Thermostat Sensing B
19. 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 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 as sembly There is a small pilot air inlet about two inches from where the pilot flame comes out of the pilot assembly see Figure 29 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 Air Inlet Figure 29 Pilot Air Inlet CABINET Air Passageways e Use a vacuum cleaner or pressurized air to clean Exterior Usea soft cloth dampened with a mild soap and water mixture Wipe the cabinet to remove dust SERVICE HINTS When Gas Pressure Is Too Low pilot will not stay lit burner 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 natural or propane LP gas supplier TECHNICAL SERVICE You may have further questions about installation operation or troubleshooting If so contact DESA Heating Products Technical Service Department a
20. as 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 LIGHTING EH MEM STOP Read the safety information above Make sure equipment shutoff valve is fully open Turn control knob clockwise To the OFF position Wait five minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety information above If you don t smell gas go to the next step Ignitor Button Turn control knob to PILOT IGN and press in Note You may be running this heater for the first time after hooking up to gas supply If so you may need to press in control knob for 30 seconds or more This will allow 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 ignitor button This will light pilot The pilot is attached to the front of burner If needed keep pressing ignitor button until pilot lights If pilot does not light e turn control knob clockwise N to the OFF position repeat steps 5 and 6 If pilot does not stay lit after several tries refer to Troubleshooting page 19 contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with mat
21. ater where flammable liquids or vapors are used or stored under dusty conditions 10 Do not use heater if any part has been under water Immediately 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 11 Turn off and unplug heater and let cool before servicing Only a qualified service person should service and repair heater 12 Operating heater above elevations of 4 500 feet could cause pilot outage 13 To prevent performance problems do not use propane LP fuel tank of less than 100 Ibs capacity 14 Before using furniture polish wax carpet cleaner or similar products turn heater off If heated the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture 15 Provide adequate clearances around air openings LOCAL CODES Install and use heater with care Follow all local codes In the absence of local codes use the latest edition of The National Fuel Gas Code ANSI Z223 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 PRODUCT IDENTIFICATION Control Knob amp Ignitor Button not seen from this view Heater Cabinet Grill Guard Plaque
22. ce agency or the gas supplier WARNING This is an unvented gas fired heater It uses air oxygen from the room in which itis installed Provi sions for adequate combustion and ventilation air must be provided Referto Airfor Combustion and Ventilation section on page 5 of this manual This appliance may be installed in an aftermarket per manently located manufactured mobile home where not prohibited by local codes This appliance is only for use with the type of gas indi cated on the rating plate This appliance is not convert ible for use with other gases Aftermarket Completion of sale not for purpose of resale from the manufacturer State of Massachusetts The installation 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 Common wealth of Massachusetts TABLE OF CONTENTS Safety Information sssssss 3 Service Hints ern 18 Product Identification ssesssss 4 Technical Service sess 18 Unpacking 5 eite reete erectis 4 Troubleshooting eene 19 Product Feat res ie tee 4 Specifications srne niran ihe otek 22 Local CodeS e
23. ch To light pilot with match see Manual Lighting Procedure page 15 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Note If pilot goes out repeat steps 3 through 7 Control Knob IGNITOR Figure 19 Control Knob In The OFF Position for Non Thermostat Models Thermocouple Ignitor Electrode Pilot Burner Figure 20 Pilot www desatech com 107883 01H OPERATING HEATER I MANUAL LIGHTING mu Continued PROCEDURE TO SELECT 1 Remove front panel see Figure 7 page 8 HEATING LEVEL 2 Follow steps 1 through 5 under Lighting Instructions page 14 A WARNING When runnin g 3 With control knob pressed in strike match heater set control knob at LOW Hold match to pilot until pilot lights MEDIUM or HIGH locked posi 4 Keepcontrol knob pressed in for 30 seconds after lighting pilot After 30 seconds release Meus aie spit a control knob Now follow step 8 under Lighting Instructions page 14 combustion and higherlevels of 5 Replace front panel carbon monoxide may result THERMOSTAT MODELS AX CAUTION Do not try to ad B FOR YOUR SAFETY READ just heating levels by using the BEFORE LIGHTING equipment shutoff valve WARNING If you do not fol Slightly press in control knob and turn coun low these instructions exactly terclockwise to the LOW MED or HI a fire or explosion may result positions s
24. cted fit tings for leaks TestPressures Equal To or Less Than 1 2 PSIG 3 5 kPa 1 Close equipment shutoff valve see Figure 16 2 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 3 Checkall 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 detection fluid to all joints Bubbles forming show a leak 4 Correct all leaks at once PRESSURE TESTING HEATER GAS CONNECTIONS 1 Open equipment shutoff valve see Figure 16 2 For natural gas open main gas valve located on or near gas meter For propane LP gas open propane LP supply tank valve 3 Make sure control knob of heater is in the OFF position 4 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 9x ON Light heater see Operating Heater page 14 Check all other internal joints for leaks 7 Turn off heater see To Turn Off Gas to Ap pliance page 15 or 16 depending on your model 8 Replace front panel Equipment Shutoff Valve Closed Figure 16 Equipment Shutoff Valve Thermostat Gas Valve Equ
25. d 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 All 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 5 through 7 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 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 le
26. d join ing wall 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 16 Min 14 ROOT COO DGOGOOOOO Only Insert Mounting 4g 3 Screws Through Last Min Hole On Each End VSSNSNSNSS War Floor 4 and 5 Plaque Heaters 42 Min 14 4 9 99 9 9 9 6 5 Only Insert Mounting Screws Through Last Hole On Each End 18 3 4 Min VSNSNSNSSS Wa Floor 3 Plaque Heater 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 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 4 Tighten screws until mounting bracket is firmly fastened to wall studs Attaching To Wall Anchor Method For attaching mounting bracket to 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
27. e 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 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 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 THIS EXPRESS WARRANTY EXCLUDES ANY AN
28. ee Figure 21 causing property damage per IMPORTANT Release downward pressure sonal injury or loss of life while turning control knob Control knob will lock at the desired position A This appliance has a pilot which must be Control CRN48 CRN30 lighted by hand When lighting the pilot Knob CRP16 CRP26 follow these instructions exactly B 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 ro If you cannot reach your gas supplier call i l the fire department OFF C Use only your hand to push in or turn the Figure 21 Burner Patterns for Non gas control knob Never use tools If the Thermostat Models knob will not push in or turn by hand don t try to repair it call a qualified service tech EN TO TURN OFF GAS nician or gas supplier Force or attempted TO APPLIANCE repair may result in a fire or explosion Shutting Off Heater D Donotuse this appliance if any part has been 1 Turn control knob clockwise lt N to the under water Immediately call a qualified ser OFF position vice tec
29. essed in long enough Equipment shutoff valve not fully open Thermocouple connection loose at control valve 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 damaged Control valve damaged Safety interlock system has been triggered thermostat models only 1 2 Press in control knob fully After ODS pilot lights keep con trol knob pressed in 30 seconds 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 18 or replace ODS pilot assembly Replace pilot assembly Replace control valve Wait one minute for safety in terlock system to reset Repeat ignition operation Burner s does not light after ODS pilot is lit Burner orifice s is clogged Inlet gas pressure is too low 1 2 Clean burner orifice s see Clean ing and Maintenance page 18 or replace burner orifice s Contact local natural or pro pane LP gas company Delayed ignition of burner s Manifold pressure is too low Burner orifice s is clogged 1 2 Contact local natural or pro pane LP gas company Clean burner orifice s
30. 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 leaks at once A 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 Ay CAUTION For propane LP gas make sure external regula tor has been installed between propane LP supply and heater See guidelines under Connect ing to Gas Supply page 11 www desatech com 107883 01H INSTALLATION Continued 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 valve from gas supply piping system Pressures in excess of 1 2 psig will damage heater regulator 2 Cap off open end of gas pipe where equipment shutoff valve was connected 3 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 4 Check all joints of gas supply piping system Apply a noncorrosive leak detection fluid to all joints Bubbles forming show a leak 5 Correct all leaks at once Reconnect heater and equipment shutoff valve to gas supply Check reconne
31. hnician to inspect the appliance and to 2 Turn off all electric power to the appliance replace any part of the control system and any if service is to be performed gas control which has been under water Shutting Off Burner Only pilot stays lit Turn control knob clockwise to the PILOT position 107883 01H www desatech com 15 OPERATING HEATER Continued LIGHTING ERE INSTRUCTIONS 1 STOP Read the safety information page 15 column 2 2 Make sure equipment shutoff valve is fully open 3 Turn thermostat control knob clockwise 7 N to the OFF position see Figure 22 4 Wait five 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 page 15 column 2 If you don t smell gas go to the next step 5 Turn thermostat control knob counter clockwise to the pilot position Press in thermostat control knob for 5 seconds see Figure 22 Note You may be running this heater for the first time after hooking up to gas supply If so you may need to press in thermostat control knob for 30 seconds or more This will allow air to bleed from the gas system If thermostat control knob does not pop up when released contact a qualified ser vice person or gas supplier for repairs 6 Keep thermostat control knob pressed in while pushing down and releasing the ig nitor button see Figure 22 This will light pilot If necessary conti
32. ign 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 23 LOCATING HEATER AX WARNING Maintain the minimum clearances shown in Figure 4 If you can provide greater clearances from floor ceiling and joining wall CEILING 2 r 107 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 107883 01H www desatech com T INSTALLATION Continued 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 for your application Ay WARNING Never install the heater in a bedroom or bathroom inarecreational vehicle where curtains furniture cloth ing or other flammable 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 If you install the heater in a home garage heater pilot and burner must be at least 18 inches above floor locate heater where moving vehicle will not hit it A CAUTION This heater creates warm
33. ipment Shutoff mo Valve Figure 17 Checking Gas Joints for Natural Gas Thermostat Gas Valve Propane LP Supply Tank SS Equipment Shutoff nil eis Ae Figure 18 Checking Gas Joints for Propane LP Gas 107883 01H www desatech com 13 OPERATING HEATER NON THERMOSTAT MODELS Nu 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 A n 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 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 h
34. is manual Send a check for 5 00 payable to DESA Heating Products 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 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 Central see page 31 orcall 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 107883 01H www desatech com 23 ILLUSTRATED PARTS BREAKDOWN CABINET BODY MODELS CRP16 CRN18 CRP16T CRN18T CRP26 CRN30 CRP26T and CRN30T Thermostat models only 14 24 www desatech com 107883 01H PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page
35. mden 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 portableheaterparts 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 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 Laporte s Parts amp Service 2444 N Sth 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 107883 01H www desatech com 31 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 INFRARED GAS HEATERS DESA Heating Products warrants this product to b
36. ng disease or anemia those under the influ ence of alcohol and those at high altitudes Natural and Propane LP Gas 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 warn ings 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 AX WARNING Do not use a blower insert heat exchanger insert or other accessory not ap proved for use with this heater 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 surface to avoid burns or clothing ignition Heater will remain hot for a time after shut down Allow surface to cool before touching Carefully supervise young chil dren 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 combustible ma terials gasoline and other flam mable vapors and liquids
37. nt 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 POSSIBLE CAUSE OBSERVED PROBLEM REMEDY White powder residue forming within burner box oron adjacent walls or furniture 1 When heated vapors from furniture polish wax carpet cleaner etc may turn into white powder residue I Turn heater off when using furniture polish wax carpet cleaners or similar products Heater produces unwanted odors Heater burning vapors from paint hair spray glues etc See IMPORTANT statement above Low fuel supply propane LP gas Gas leak See Warning statement at top of page Ventilate room Stop using odor causing products while heater is running Refill supply tank Locate and correct all leaks see Checking Gas Connec tions 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 local natural or pro pane LP gas company Clean ODS pilot see Cleaning and Maintenance page 18 Gas odor even when control knob is in OFF position Gas leak See Warning statement at top of page Control valve defective
38. nue to press ignitor button until pilot lights If pilot does not light turn thermostat control knob clockwise N to the OFF position repeat steps 5 and 6 If pilot does not stay lit after several tries refer to Troubleshooting page 19 contact a qualified service person or gas supplier Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 17 7 Keep thermostat control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Note If pilot goes out repeat steps 3 through 7 This heater has a safety interlock system Wait one minute before lighting pilot again 8 Turn thermostat control knob counter clockwise to the desired heating level The main burner should light Set control knob to any heat level between 1 and 5 see Figure 24 A CAUTION Do not try to ad just heating levels by using the equipment shutoff valve Ignitor Button Come Knob Figure 22 Control Knob In The OFF Position Piezo Ignitor Shown Thermocouple Ignitor Electrode Pilot Burner Figure 23 Pilo Control Knob CRP16T CRP26T CRN18T CRN30T 053 Figure 24 Burner Patterns EN TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1 Turn thermostat control knob clockwise N to the OFF position 2 Turn off all electric power to the appliance if service is to be performed
39. o Electronic Pressure Regulator Setting 8 W C 8 W C 8 W C Inlet Gas Pressure in of water Maximum 14 14 14 Minimum qi 11 11 Dimensions Inches H x W x D Heater 26 25 x 18 25 x 7 26 25 x 25 75 x 7 26 25 x 25 75 x 7 Carton 28 25 x 21 25 x9 28 25 x 29 x9 28 25 x 29 x9 Weight pounds Heater 20 28 28 Shipping 25 33 33 Note Dimensions listed are outer most points on the heater includes control knobs and grill For purposes of input adjustment 22 www desatech com 107883 01H ACCESSORIES Purchase these heater accessories from your local dealer If they can not supply these accessories either contact your nearest Parts Central see page 31 or 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 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 FLOOR MOUNTING KIT GA4550 For all models Provides more flexible installa tion options ELECTRONIC IGNITOR KIT GA435 Not Shown For all piezo ignitor models Provides easier lighting of the pilot SERVICE PUBLICATIONS You can purchase a service manual from the address listed on the back page of th
40. onfined 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 pas sageways or ventilation grills between the rooms 107883 01H www desatech com 5 AIR FOR COMBUSTION AND VENTILATION Continued 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 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 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 Di rect vent draws combustion 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 Compare the maximum Btu Hr the space can support wi
41. or both gases 107883 01H www desatech com 29 ILLUSTRATED PARTS BREAKDOWN BURNER ASSEMBLY MODELS CRP16T CRN18T CRP26T CRT26PT CRN30T AND CRT30NT ODS Pilot Burner Assembly CRP26T CRT26PT CRN30T and CRT30NT 30 www desatech com 107883 01H PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 23 of this manual PART NUMBER CRP26T CRT26PT 110803 02 110186 01 099387 03 104818 04 099218 09 099056 25 099056 01 CRN18T 110803 03 110186 01 099387 11 104818 03 099218 08 099056 24 099056 02 110803 02 110186 01 099387 11 104818 03 099218 08 099056 25 099056 01 CRN30T CRT30NT 110803 03 110186 01 099387 03 104818 04 099218 09 099056 24 099056 02 DESCRIPTION ODS Pilot Thermocouple Kit Pilot Tubing Outlet Tubing Burner Injector Plaques A amp C Injector Plaque B f replacing ODS pilot and your model is pre 2002 your part number will be 099059 07 for natural gas models 103594 04 for propane LP models The thermocouple part number will be 098514 01 for both gases The electrode part number will be 098594 01 for both gases PARTS CENTRAL These Parts Centrals are privately owned business es They have agreed to support our customer s needs by providing original replacement parts and accessories Tool amp Equipment Co 5 Manila Ave Ha
42. see Clean ing and Maintenance page 18 or replace burner orifice s Burner backfiring during com bustion Burner orifice s is clogged or damaged Burner damaged Gas regulator defective 1 Clean burner orifice s see Clean ing and Maintenance page 18 or replace burner orifice s Replace burner Replace gas regulator Burner plaque s does not glow Plaque damaged Inlet gas pressure is too low Control knob set between locked positions 3 Replace burner Contact local natural or pro pane LP gas company Turn control knob until it locks at desired setting Slight smoke or odor during initial operation Residues from manufacturing processes 1 Problem will stop after a few hours of operation Heater produces aclicking tick ing noise just after burner is lit or shut off Metal expanding while heating or contracting while cooling 1 This is common with most heat ers If noise is excessive contact qualified service person 20 www desatech com 107883 01H TROUBLESHOOTING Continued your building Ad WARNING If you smell gas Shut off gas supply Do not try to light any appliance Do not touch any electrical switch do not use any phone in 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 departme
43. ss with openings gasketed or sealed and 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 these three cri teria you must provide additional fresh air See Ventilation Air From Outdoors page 7 If your home does not meet all of the three criteria above proceed to Determining Fresh Air Flow For Heater Location 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 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 space 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 Unc
44. 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 pres sure 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 Propane LP A Supply Tank i External Regulator x Ee o ssi Figure 14 External Regulator With Vent Pointing Down 107883 01H www desatech com 11 INSTALLATION Continued A CAUTION Use only new black iron or steel pipe Inter nally 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 Typical Inlet Pipe Diameters CRN18 T and CRP16 T 3 8 or greater CRN30 T and CRP26 T 1 2 or greater CRT30NT and CRT26PT 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 IMPORTANT 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 Appl
45. t 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 service web site at www desatech com 18 www desatech com 107883 01H TROUBLESHOOTING WARNING Turn off and unplug heater and let cool before servicing Only a qualified service 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 Note All troubleshooting items are listed in order of operation POSSIBLE CAUSE OBSERVED PROBLEM REMEDY When ignitor button is pressed in there is no spark at ODS pilot 1 QN tA Ignitor electrode positioned wrong Ignitor electrode broken Ignitor electrode not con nected to ignitor cable Ignitor cable pinched or wet Broken ignitor cable Bad piezo ignitor Piezo ignitor nut is loose piezo ignition models only Battery not installed battery power low or battery not installed correctly electronic ignition models only 1 QN tA Replace pilot assembly Replace pilot assembly Reconnect ignitor cable Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry Replace ignitor cable Replace piezo Tighten nut holding piezo ignitor Nut is located inside heater cabinet at top Install new alkaline battery in electronic ignitor Verify
46. th 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 maxi mum 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 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 Vent room directly to the outdoors See Ventila tion Air From Outdoors page 7 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 un confined space You will need no additional fresh air ventilation AX WARNING If the area in which the heater may be oper ated 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 ANSI Z223 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
47. ulb INSTALLING HEATER TO WALL Mounting Bracket Locate mounting bracket in heater carton Remove mounting bracket from heater carton Figure 6 Mounting Bracket 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 Front Panel Screw y Figure 7 Removing Front Panel Of Heater 8 www desatech com 107883 01H INSTALLATION Continued 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 AX WARNING Maintain mini mum clearances showninFigure 8 If you can provide greater clearances from floor an
48. ventilating to an adjoining unconfined space you must provide two perma nent openings one within 12 of the ceiling and one within 12 ofthe 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 NFPA 54 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts je m Ventilation Grills Into Adjoining Room Ventilation Option 2 Grills Or into Adjoining Remove Room Door into Option 1 Adjoining N Room Option 3 A A d Figure 2 Ventilation Air from Inside Building www desatech com 107883 01H 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 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
49. y 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 Pressure Regulator 3 8 NPT Regulator Pipe Bracket Nipple Heater Ground Cabinet Joint 5 L Union S Tee Joint Equi o quipment E Reducer Shutoff S ra eo Valve o jo tiie Gas 8 1 8 NPT 3 From Gas Plug Tap LL Min Meter 7 W C E to 10 5 W C Tee Pipe Cap Pressure Joint Nipple Propane LP From External Sediment Trap Regulator 11 W C to 14 W C Pressure ACSA design certified 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 23 Figure 15 Gas Connection CHECKING GAS CONNECTIONS all leaks at once WARNING Testall gas piping and connections internal and external to unit for leaks after installing or servicing Correct 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

Desa CRN30 Gas Heater User Manual

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