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14

104412

VENT-FREE PROPANE/LP GAS HEATER

BLUE-FLAME

TROUBLESHOOTING

 WARNING: Turn off and

unplug heater and let cool be-
fore servicing. Only a qualified
service person should service
and repair heater.

 CAUTION: Never use a wire,

needle, or similar object to clean
ODS/pilot. This can damage ODS/
pilot unit.

OBSERVED PROBLEM

When ignitor button is pressed, there is no
spark at ODS/pilot

When ignitor button is pressed, there is
spark at ODS/pilot but no ignition

ODS/pilot lights but flame goes out when
control knob is released

Burner does not light after ODS/pilot is lit

POSSIBLE CAUSE

1. Ignitor electrode positioned wrong
2. Ignitor electrode broken
3. Ignitor electrode not connected to igni-

tor cable

4. Ignitor cable pinched or wet

5. Broken ignitor cable
6. Bad piezo ignitor

1. Gas supply turned off or equipment

shutoff valve closed

2. Control knob not in PILOT position
3. Control knob not pressed in while in

PILOT position

4. Air in gas lines when installed

5. Depleted gas supply
6. ODS/pilot is clogged

7. Gas regulator setting is not correct

1. Control knob not fully pressed in
2. Control knob not pressed in long enough

3. Equipment shutoff valve not fully open
4. Thermocouple connection loose at con-

trol valve

5. 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/pilot

6. Thermocouple damaged
7. Control valve damaged

1. Burner orifice is clogged

2. Burner orifice diameter is too small
3. Inlet gas pressure is too low

REMEDY

1. Replace ignitor
2. Replace ignitor
3. Reconnect ignitor cable

4. Free ignitor cable if pinched by any

metal or tubing. Keep ignitor cable dry

5. Replace ignitor cable
6. Replace piezo ignitor

1. Turn on gas supply or open equipment

shutoff valve

2. Turn control knob to PILOT position
3. Press in control knob while in PILOT

position

4. Continue holding down control knob.

Repeat igniting operation until air is re-
moved

5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and

Maintenance, page 13) or replace ODS/
pilot assembly

7. Replace gas regulator

1. Press in control knob fully
2. After ODS/pilot lights, keep control

knob pressed in 30 seconds

3. Fully open equipment shutoff valve
4. Hand tighten until snug, then tighten 1/4

turn more

5. A) Contact local propane/LP gas company

B) Clean ODS/pilot (see Cleaning and
Maintenance
, page 13) or replace ODS/
pilot assembly

6. Replace thermocouple
7. Replace control valve

1. Clean burner (see Cleaning and Mainte-

nance, page 13) or replace burner orifice

2. Replace burner orifice
3. Contact local propane/LP gas company

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.

www.desatech.com

Summary of Contents for CGP20B

Page 1: ...ed by a qualified installer service agency or the gas supplier WARNING Improper installa tion adjustment alteration ser vice ormaintenancecancause injury or property damage Re fer to this manual for correct installationandoperationalpro cedures For assistance or ad ditional information consult a qualified installer service agency or the gas supplier WARNING This is an unvented gas firedheater Itus...

Page 2: ...esh outside air ven tilation 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 the front and bottom of heater clear and free of de bris This will insure enough air for proper combustion 7 If heater shuts off do no...

Page 3: ...UNPACKING 1 Remove heater from carton 2 Remove all protective packaging ap plied to heater for shipment 3 Check heater for any shipping damage If heater is damaged promptly inform dealer where you bought heater LOCAL CODES Install and use heater with care Follow all localcodes Intheabsenceoflocalcodes use the latest edition of National Fuel Gas Code ANS Z223 1 also known as NFPA 54 Available from ...

Page 4: ... rating of one perm 6 x 10 11 kg per pa sec m2 or less with open ings 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 be tween sole plates and floors be tween wall ceiling joints be tween wall panels at penetra tions for plumbing electrical and gas lines and at other...

Page 5: ...g 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 ...

Page 6: ...4 ANS Z223 1 Section5 3 AirforCombustionand 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 controlledpowervent Heatedair enteringtheatticwillactivatethepowervent WARNING Rework work sheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh air to su...

Page 7: ...r ceiling andjoin ing wall You can locate model CGP20B and CGP20LB on floor away from a wall An optional floor mounting stand is needed Purchase the floor mounting stand from your dealer See Accessories page 22 WARNING Never install the heater in a bedroom or bathroom in a recreational vehicle where curtains furniture clothing or other flammable objects are less than 36 inches from the front top o...

Page 8: ...t Marking Screw Locations 1 Tape mounting bracket to wall where heater will be located Make sure mounting bracket is level 2 Mark screw locations on wall see Fig ure 7 WARNING Maintainminimum clearances shown in Figure 7 If you can provide greater clear ancesfromfloorandjoiningwall Note Only mark last hole on each end of mounting bracket Insert mounting screws through these holes only 3 Remove tap...

Page 9: ...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 Installing 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 ...

Page 10: ...ng gas pressure You must reduce incominggaspressuretobetween11and14 inches of water If you do not reduce incom ing gas pressure heater regulator damage could occur Install external regulator with the vent pointing down as shown in Figure 12 Pointing the vent down protects it from freezing rain or sleet WARNING Aqualifiedservice person must connect heater to gassupply Followalllocalcodes CAUTION Ne...

Page 11: ...e Fig ure 14 2 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 control valve see Figure 15 Applymixtureofliquidsoapandwaterto gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light heater see Operating Heater pages 11 and 12 Check the rest of the internal joints for leaks 7 Turn off h...

Page 12: ... control knob pressed in for five 5 seconds see Figure 16 Note You may be running this heater for the first time after hook ing up to gas supply If so the con trol knob may need to be pressed in for 30 seconds 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 6 With control knob pressed in p...

Page 13: ...ON You must keep control areas burner and circu lating air passageways of heater clean Inspect these areas of heater before each use Have heaterinspectedyearlybyaquali fied service person Heater may needmorefrequentcleaningdue to excessive lint from carpeting bedding material pet hair etc ODS PILOT AND BURNER Use a vacuum cleaner pressurized air or small soft bristled brush to clean 1 2 HEAT SHIEL...

Page 14: ...out This prob lem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS pilot 6 Thermocouple damaged 7 Control valve damaged 1 Burner orifice is clogged 2 Burner orifice diameter is too small 3 Inlet gas pressure is too low REMEDY 1 Replace ignitor 2 Replace ignitor 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing Keep i...

Page 15: ...hen heated vapors from furniture pol ish wax carpet cleaners etc turn into white powder residue REMEDY 1 Contact local propane LP gas company 2 Clean burner see Cleaning and Mainte nance page 13 or replace burner orifice 1 Clean burner see Cleaning and Mainte nance page 13 or replace burner orifice 2 Contact local propane LP gas company 3 Replace burner 4 Replace gas regulator 1 Check burner for d...

Page 16: ...leak SeeWarning statement at top of page 2 Control valve defective 1 Foreign matter between control valve and burner 2 Gas leak SeeWarning statement at top of page 1 Not enough combustion ventilation air OBSERVED PROBLEM Heater produces a clicking 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 i...

Page 17: ...e ready model number of your heater the replacement part number TECHNICAL SERVICE You may have further questions about in stallation operation or troubleshooting If so contact DESA International s Technical Service Department at 1 800 323 5190 You can also visit DESA International s technical service web site at www desatech com SPECIFICATIONS RP30E CGP20 L B Btu Variable 15 000 30 000 10 000 20 0...

Page 18: ...18 104412 VENT FREE PROPANE LP GAS HEATER BLUE FLAME 1 2 4 5 6 6 7 8 8 9 10 11 12 15 17 19 21 22 23 20 26 25 18 14 16 24 3 13 ODS PILOT 10 1 10 2 ILLUSTRATED PARTS BREAKDOWN RP30E ...

Page 19: ...Pilot LP 1 10 1 098514 01 Thermocouple 1 10 2 106842 01 Ignitor Electrode 1 11 103447 01 Burner 1 12 099387 05 3 16 Pilot Tubing 1 13 103845 03 Injector 1 14 099066 01 Mounting Bracket 1 15 099415 06 Pressure Regulator 1 16 099553 01 Pilot Shield 1 17 103570 01 3 8 Outlet Burner Tubing 1 18 103572 01 3 8 Inlet Tubing 1 19 100068 01 Pressure Tap Fitting 1 20 100047 02 Control Valve 1 21 104617 09 C...

Page 20: ...20 104412 VENT FREE PROPANE LP GAS HEATER BLUE FLAME ODS PILOT 12 1 12 2 1 2 3 4 5 6 8 8 9 10 10 11 12 13 14 17 19 25 21 23 24 7 22 27 26 20 16 18 15 ILLUSTRATED PARTS BREAKDOWN CGP20B CGP20LB ...

Page 21: ...ut M5 2 12 103594 04 ODS Pilot Assembly 1 12 1 098514 01 Thermocouple 1 12 2 106842 01 Ignitor Electrode 1 13 103446 01 Burner 1 14 099387 05 3 16 Pilot Tubing 1 15 103845 01 Injector 1 16 099066 01 Mounting Bracket 1 17 099415 06 Pressure Regulator 1 18 099553 01 Pilot Shield 1 19 103570 01 3 8 Outlet Burner Tubing 1 20 103572 01 3 8 Inlet Tubing 1 21 100068 01 Pressure Tap Fitting 1 22 100047 04...

Page 22: ...ENT SHUTOFF VALVE GA5010 For all models Equipment shutoff valve with 1 8 NPT tap FLOOR MOUNTING STAND 20 000 Btu Hr Models CGP20LB GA4500L Ivory CGP20B GA4500 Earthtone For locating heater on the floor away from a wall Complete installation instructions included FAN KITS GA3100 A B AND GA3200T A B For all models Provides better heat distri bution Makes heater more efficient Com plete installation ...

Page 23: ...16 791 0505 1 800 446 1446 Fax 616 791 8270 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 Products 707 Broadway W Long Branch NJ 07764 1542 732 870 8809 1 800 755 8809 www njplaza com ecep Tarantin Tank Co P O Box 6129 Freehold NJ 07728 6129 908 780 9340 1 800 922 0724 www tarantin com Heater and Fireplace St...

Page 24: ... 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 owne...

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