Desa CGN18B Owner'S Operation And Installation Manual Download Page 25

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100096

TECHNICAL

SERVICE

You may have further questions about installation, operation, or troubleshooting.
If so, contact DESA International’s Technical Service Department at 1-800-323-
5190.

SPECIFICATIONS

When gas pressure is too low

• pilot will not stay lit
• burner will have delayed ignition
• heater will not produce specified heat

When gas quality is bad

• pilot will not stay lit
• burner will produce flames and soot
• heater will backfire when lit

You may feel your gas pressure is too low or gas quality is bad. If so, contact your
local natural gas supplier.

SERVICE

HINTS

RN30B

CGN18B

BTU (Variable)

15,000/30,000

9,000/18,000

Type Gas

Natural Only

Ignition

Piezo

Pressure Regulator Setting

3" W.C.

Inlet Gas Pressure (inches of water)

Maximum

10.5"

Minimum

Dimensions, Inches (H x W x D)

Heater

23.5 x 25.9 x 8.0

23.5 x 18.5 x 8.0

Carton

25.8 x 28.7 x 10.1

25.8 x 21.3 x 10.1

Weight (pounds)

Heater

Shipping

Summary of Contents for CGN18B

Page 1: ...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 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 If you cannot reach your gas supplier call the fire departme...

Page 2: ...nd carbon monoxide poisoning WARNING ICON G 001 DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early 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 p...

Page 3: ...the heater if not enough fresh air is available See Fresh Air for Combus tion and Ventilation pages 5 through 8 6 Never run heater in small closed room 7 If heater shuts off do not relight until you provide fresh outside air If heater keeps shutting off have it serviced 8 Do not run heater where flammable liquids or vapors are used or stored under dusty conditions 9 Never place any objects on the ...

Page 4: ...8 National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 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 inform dealer where you bought heater PRODUCT FEATURES Safety Device This heater has a pilot with an Oxygen Depletion Sensor Shutoff System ODS The ODS...

Page 5: ...n 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 a walls and ceilings exposed to the outside atmosphere have a continu ous water vapor retarder with a rating of one perm or less with open in...

Page 6: ...Hr Gas furnace ___________________ BTU Hr Vented gas heater ___________________ BTU Hr Gas fireplace logs ___________________ BTU Hr Other gas appliances ___________________ BTU Hr Total ___________________ BTU Hr Example Gas water heater 40 000 BTU Hr Vent free heater 18 000 BTU Hr Total 58 000 BTU Hr Do not include direct vent gas appliances Direct vent draws combustion air from the outdoors and...

Page 7: ...oor 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 WARNING ICON G 001 WARNING Rework worksheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh air to supply all appliances in both spaces Figure 2 Ventilation Air from Inside Building Or Remove Door into Adjoining Room...

Page 8: ...pen to the outdoors These spaces include attics and crawl spaces Follow the National Fuel Gas Code NFPA 54 ANSI Z223 1 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 thermo stat controlled power vent Heated air entering the attic will activate the power vent Outlet A...

Page 9: ...wn in Figure 4 page 10 If you can provide greater clearances from floor ceiling and joining wall You can locate model CGN18B on floor away from a wall An optional floor mounting stand is needed Purchase the floor mounting stand from your dealer See Accessories page 27 WARNING ICON G 001 WARNING Never install the heater in a bedroom or bathroom in a recreational vehicle where curtains furniture clo...

Page 10: ...r where there is easy access for operation inspection and service where strong wind gusts from an open door or garage door can not blow directly into heater An optional fan kit is available from your dealer See Accessories page 27 If planning to use fan locate heater near an electrical outlet 36 FLOOR CEILING Minimum Minimum To Floor 6 Minimum From Sides Of Heater Left Side Right Side 163 4 RN30B ...

Page 11: ...om grill and glass CGN18B or heat shield RN30B 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 16 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 m...

Page 12: ...alls 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 2 Fold wall anchor as shown in Figure 8 2 Mark screw locations on wall see Figure 7 Note Only mark last hole on each end of mounting bracket Insert mounting screws through these holes only 3 Remove tape and mounting bracke...

Page 13: ...alling Bottom Mounting Screws 1 Locate two bottom mounting holes These holes are near bottom on back panel of heater see Figure 11 2 Mark screw locations on wall 3 Remove heater from mounting bracket 4 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 12 If installing bottom mounting screw into wa...

Page 14: ...y to male threads This will prevent excess sealant from going into pipe Excess sealant in the pipe could result in clogged heater valves WARNING ICON G 001 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 1 2 diameter or greater to allow proper gas volume to heater If pipe is too small undue loss of pressu...

Page 15: ...ed manual shutoff valve from your dealer See Accessories page 27 CHECKING GAS CONNECTIONS WARNING ICON G 001 WARNING Test all gas piping and connections for leaks after installing or servicing Correct all leaks at once WARNING ICON G 001 WARNING Never use an open flame to check for a leak Apply a mixture of liquid soap and water to all joints Bubbles forming show a leak Correct all leaks at once P...

Page 16: ...URE TESTING HEATER GAS CONNECTIONS 1 Open manual shutoff valve see Figure 13 2 Open main gas valve located on or near gas meter 3 Make sure control knob of heater is in the OFF position 4 Check all joints from manual shutoff valve to control valve see Figure 14 Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light heater see Operating ...

Page 17: ...y 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 technician or gas supplier Force or attempted repair may result in a fire or explosion D 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...

Page 18: ... safety information at the top of page 17 If you don t smell gas go to the next step 5 Press in control knob and turn counterclockwise C clockwise to the PILOT position Keep control knob pressed in for five 5 seconds see Figure 15 page 17 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 This will a...

Page 19: ...clockwise Clockwise to the PILOT position 2 Press in control knob and turn clockwise Clockwise to the OFF position 3 Turn off all electric power to the appliance if service is to be performed Shutting Off Burner Only pilot stays lit 1 Turn control knob clockwise Clockwise to the PILOT position MANUAL LIGHTING PROCEDURE 1 Remove front panel see Figure 5 page 11 2 Follow steps 1 through 5 under Ligh...

Page 20: ...ht Figure 19 Correct Burner Flame Pattern Figure 20 Incorrect Burner Flame Pattern If burner flame pattern is incorrect as shown in Figure 20 turn heater off see To Turn Off Gas to Appliance page 19 see Troubleshooting pages 21 through 24 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 CORRECT FLAM...

Page 21: ...CON G 001 WARNING Turn off and unplug heater and let cool before servicing Only a qualified service person should service and repair heater Note All troubleshooting items are listed in order of operation WARNING ICON G 001 CAUTION Never use a wire needle or similar object to clean ODS pilot This can damage ODS pilot unit OBSERVED PROBLEM When ignitor button is pressed there is no spark at ODS pilo...

Page 22: ...out This problem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS pilot 6 Thermocouple dam aged 7 Control valve damaged 1 Burner orifice is clogged REMEDY 1 Turn on gas supply or open manual shutoff valve 2 Turn control knob to PILOT position 3 Press in control knob while in PILOT position 4 Continue holding down control knob Repeat igniting opera...

Page 23: ...cold 2 Air in gas line 3 Air passageways on heater blocked 4 Dirty or partially clogged burner orifice REMEDY 2 Replace burner orifice 3 Contact local natural gas company 1 Contact local natural gas company 2 Clean burner see Cleaning and Mainte nance page 21 or replace burner orifice 1 Clean burner see Cleaning and Mainte nance page 21 or replace burner orifice 2 Replace burner 3 Replace gas regu...

Page 24: ...icking ticking noise just after burner is lit or shut off Heater produces unwanted odors Heater shuts off in use ODS operates Gas odor even when control knob is in OFF position Gas odor during combustion REMEDY 1 This is common with most heaters If noise is excessive contact qualified service person 1 Ventilate room Stop using odor causing products while heater is running 2 Locate and correct all ...

Page 25: ... stay lit burner will produce flames and soot heater will backfire when lit You may feel your gas pressure is too low or gas quality is bad If so contact your local natural gas supplier SERVICE HINTS RN30B CGN18B BTU Variable 15 000 30 000 9 000 18 000 Type Gas Natural Only Natural Only Ignition Piezo Piezo Pressure Regulator Setting 3 W C 3 W C Inlet Gas Pressure inches of water Maximum 10 5 10 5...

Page 26: ...hese Parts Centrals are privately owned businesses They have agreed to support our customer s needs by providing original replacement parts and accessories When calling a Parts Central ask for the Parts Department Portable Heater Parts 342 N County Rd 400 East Valparaiso IN 46383 All States 219 462 7441 1 800 362 6951 FBD 601 Hope Street Bowling Green KY 42101 502 796 8406 1 800 654 8534 Master Se...

Page 27: ...You can also write to the address listed on the back page of this manual to receive these accessories FAN KITS GA2100A and GA3100 Provides better heat distribution Makes heater more efficient Complete installation and operating instructions included MANUAL SHUTOFF VALVE GA5010 Manual shutoff valve with 1 8 NPT tap FLOOR MOUNTING STAND GA4000B Model CGN18B only For locating heater on the floor away...

Page 28: ...28 100096 1 2 3 4 5 6 7 8 8 9 10 11 12 13 14 15 17 19 21 22 23 24 20 27 26 18 28 16 25 10 1 10 2 ODS Pilot ...

Page 29: ...1 098514 01 Thermocouple 1 10 2 098594 01 Ignitor Electrode 1 11 099126 02 Burner 1 12 099387 05 3 16 Pilot Tubing 1 13 098251 06 Injector 1 14 098250 01 Injector Holder 1 15 098867 04 Pressure Regulator 1 16 099553 01 Pilot Shield 1 17 100091 01 3 8 Outlet Burner Tubing 1 18 100092 01 3 8 Inlet Tubing 1 19 100068 01 Pressure Tap Fitting 1 20 100047 01 Control Valve 1 21 098529 02 Cabinet 1 22 097...

Page 30: ...30 100096 12 1 12 2 ODS Pilot 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 16 17 19 27 21 23 24 25 26 22 29 28 20 30 18 ...

Page 31: ... 12 099440 05 ODS Pilot Assembly 1 12 1 098514 01 Thermocouple 1 12 2 098594 01 Ignitor Electrode 1 13 099120 02 Burner 1 14 099387 05 3 16 Pilot Tubing 1 15 098251 02 Injector 1 16 098250 01 Injector Holder 1 17 098867 04 Pressure Regulator 1 18 099553 01 Pilot Shield 1 19 100091 01 3 8 Outlet Burner Tubing 1 20 100092 01 3 8 Inlet Tubing 1 21 100068 01 Pressure Tap Fitting 1 22 100047 03 Control...

Page 32: ...pairing a defective heater will be the responsibility of the owner TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO ONE 1 YEAR FROM THE DATE OF FI...

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