Comfort Glow CGD3924PR Owner'S Operating & Installation Manual Download Page 27

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103344

TECHNICAL

SERVICE

You may have further questions about installation, operation, or troubleshooting.
If so, contact DESA International’s Technical Service Department at
1-800-DESA LOG (1-800-337-2564).

SPECIFICATIONS

CGD3924PR

Btu (Variable)

20,000/39,000

Type Gas

Propane Only

Ignition

Piezo

Manifold Pressure

8.0" W.C.

Inlet Gas
Pressure (in. of water)

Maximum

14"

Minimum*

11"

Shipping Weight

30 lbs.

* For the purpose of input adjustment

When gas pressure is too low

• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane gas supply may be low

When gas quality is bad

• pilot will not stay lit
• burners 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

WIRING

DIAGRAM

Receiver

White

On
Off

Remote

Red

White

Thermopile

Gas Control

TPTH

TPTH TP

Summary of Contents for CGD3924PR

Page 1: ...tion and operational procedures For assistance or additional information consult a qualified installer service agency or the gas supplier WARNING This gas log set is for instal lation in a masonry solid fuel burning fireplace or a U L listed manufactured solid fuel burning fireplace WARNING This is an unvented gas fired heater It uses air oxygen from the room in which it is installed Provi sionsfo...

Page 2: ...s Propane Gas Propane gas is odorless An odor making agent is added to the gas The odor helps you detect a gas leak However the odor added to the gas can fade Gas may be present even though no odor exists Make certain you read and understand all Warnings Keep this manual for reference It is your guide to safe and proper operation of this heater Safety Information continues on next page Safety Info...

Page 3: ...er burner flame patterns Ceiling fans may create drafts that alter burner flame patterns Altered burner patterns can cause sooting 11 Donotuseablowerinsert heatexchangerinsertorotheraccessorynotapprovedforusewith this heater 12 This heater needs fresh outside air ventilation to run properly This heater has an oxygen depletion sensor ODS pilot light safety system The ODS shuts down the heater if no...

Page 4: ...ater as a vented product by opening flue damper Safety Pilot This heater has a pilot with an Oxygen Depletion Sensor Shutoff System ODS 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 1 Re...

Page 5: ...liances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are consid ered a part of the unconfined space Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them PROVIDING ADEQUATE VENTILATION The following is exerpts from National Fuel Gas Code NFPA ...

Page 6: ...s 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 39 000 Btu Hr Total 79 000 Btu Hr Do not include direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr...

Page 7: ...ed size of ventilation grills or ducts 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 3 Ventilation Air from Outdoors Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts You must provide two perma nent openings one within 12 of the ceilin...

Page 8: ...e front top or sides of the heater in high traffic areas in windy or drafty areas 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 in the air such as tobacco smoke exist may discolor walls CHECK GAS TYPE Use only propane LP gas If your gas supply is not...

Page 9: ...ce Minimum Wall and Ceiling Clearances see Figure 4 A Clearances from the side of the fireplace opening to any combustible wall should not be less than 16 inches B Clearances from the top of the fireplace opening to the ceiling should not be less than 42 inches Figure 4 Minimum Clearance to Wall and Ceiling Continued LOG SIZING REQUIREMENTS Log Minimum Firebox Size Size Height Depth Front Width 24...

Page 10: ...n combus tible material is less than 12 you must install the fireplace hood accessory 24 and 30 models only See chart below and Figure 5 for minimum clearances IMPORTANT If you cannot meet these minimum clearances you must operate heater with chimney flue damper open Non Combustible Requirements for Material Distance A Safe Installation 12 or more Non combustible material okay Between 8 and 12 Ins...

Page 11: ...pen Figure 6 Minimum Mantel Clearances Without Using Hood Minimum Non Combustible Material Minimum Non Combustible Material Height Distances to Underside of Mantel Top of Fireplace Opening Underside of Mantel Shelf Mantel Shelf 12 A 20 241 2 271 2 30 All minimum distances are in inches Log Set 24 30 Models 8 14 163 4 181 2 20 18 Model 2 1 2 6 8 10 If above minimum clearances are not met you must h...

Page 12: ... on the floor level you must maintain the minimum distance of 14 to combustibles see Figure 8 B If combustible materials are less than 14 to the fireplace you must install appliance at least 5 above the combustible flooring see Figure 9 Figure 9 Minimum Fireplace Clearances Above Combustible Flooring If your installation does not meet the above minimum clearances you must operate the logs only wit...

Page 13: ...ee Figure 11 page 14 If installing in a brick bottom fireplace mark screw locations in mortar joint of bricks 5 Remove heater base from fireplace 6 Drill holes at marked locations using 3 16 masonry drill bit 7 Attach base assembly to fireplace floor using two masonry screws in hardware package see Figure 11 page 14 8 Connect to gas supply See Connecting To Gas Supply page 14 WARNING If installing...

Page 14: ... service person must connect heater to gas supply Follow all local codes CAUTION Never connect heater to directly to the propane supply This heater requires an external regulator not supplied Install the external regulator between the heater and propane supply Figure 10 Attaching Flexible Gas Hose to Heater Flexible Gas Hose if allowed by local codes Fitting ...

Page 15: ...2 Pointing the vent down protects it from freezing rain or sleet 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 pressure will occur Installation must include a manual shutoff valve union and plugged 1 8 NPT ta...

Page 16: ... Correct all leaks at once CHECKING GAS CONNECTIONS Continued Pressure Testing gas Supply Piping system Test Pressures In Excess Of 1 2 PSIG 1 Disconnect heater and its individual manual 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 manual shutoff valve was connected Tee Joint Pipe Nipple Cap 3 Minimum ...

Page 17: ...ply mixture of liquid soap and water to gas joints Bubbles forming show a leak 4 Correct all leaks at once Pressure Testing Heater Gas Connections 1 Open manual shutoff valve see Figure 14 2 Open propane supply tank valve 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 15 Apply mixture of liquid soap and water to ga...

Page 18: ...e cutout on the right of the middle log should fit over the burner see Figure 17 Make sure the front of the middle log is resting on the tabs of the grate base and the cutout area is centered over the burner U bend 3 Locate the recesses on the back of the front log 3 Fit these recesses between the posts of the grate base see Figure 18 4 Locate the notches in the bottom of the crossover log 4 Place...

Page 19: ...ce 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 LIGHTING INSTRUCTIONS WARNING If fireplace has glass doors never operate this heater with glass doors closed If you operate heater with doors closed heat buildup inside fireplace will cause glass to...

Page 20: ...ep pressing ignitor button until pilot lights Note If pilot does not stay lit contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure on page 21 8 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob If control knob does not pop out when rel...

Page 21: ...ore using the hand held remote control unit See Lighting Instructions on page 19 Figure 22 Setting the Remote Selector Switch Control Knob and Flame Adjustment Knob for Remote Operation Remote Selector Switch in Remote Position Control Knob in On Position Flame Adjustment Knob 1 After lighting let pilot flame burn for about one minute Turn control knob to ON position Adjust flame adjustment knob a...

Page 22: ... operating in the MANUAL mode press the OFF button If operating in the auto mode press the manual button then press the OFF button The pilot will remain lit IMPORTANT To turn the pilot off manually turn the control knob on the heater to the OFF position or set remote selector switch to OFF position Figure 24 Correct Pilot Flame Pattern Pilot Burner Thermocouple Figure 25 Incorrect Pilot Flame Patt...

Page 23: ...ODS pilot unit POSSIBLE CAUSE 1 Ignitor electrode not con nected to ignitor cable 2 Ignitor cable pinched or wet 3 Piezo ignitor nut is loose 4 Broken ignitor cable 5 Bad piezo ignitor 6 Ignitor electrode broken 7 Ignitor electrode posi tioned wrong REMEDY 1 Reconnect ignitor cable 2 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 3 Tighten nut holding piezo ignitor to ...

Page 24: ...Replace thermocouple 7 Replace control valve OBSERVED PROBLEM 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 POSSIBLE CAUSE 1 Gas supply turned off or manual 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 ...

Page 25: ...op after a few hours of operation 1 Refer to Air for Com bustion and Ventilation requirements page 5 1 Turn control knob to LO position and let warm up for a minute 2 Operate burner until air is removed from line Have gas line checked by local propane gas company 3 Observe minimum installation clearances see pages 9 12 4 Clean burner see Cleaning and Maintenance page 23 or replace burner orifice T...

Page 26: ...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 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 Open window and ventilate room Stop using odor causing products while heater is running 2 Loc...

Page 27: ...Minimum 11 Shipping Weight 30 lbs For the purpose of input adjustment When gas pressure is too low pilot will not stay lit burners will have delayed ignition heater will not produce specified heat propane gas supply may be low When gas quality is bad pilot will not stay lit burners will produce flames and soot heater will backfire when lit You may feel your gas pressure is too low or gas quality i...

Page 28: ... original replacement parts and accessories When calling a Parts Central ask for the Parts Department Baltimore Electric 1348 Dixwell Avenue Hamden CT 06514 1 800 397 7553 203 248 7553 Parts Department Portable Heater Parts 342 N County Rd 400 East Valparaiso IN 46383 All States 219 462 7441 1 800 362 6951 FBD P O Box 1096 Franklin KY 42134 502 586 1922 1 800 654 8534 Four Flags Power Products 111...

Page 29: ... can also write to the address listed on the back page of this manual MANUAL SHUTOFF VALVE GA5010 Manual shutoff valve with 1 8 NPT tap Fits 1 2 NPT pipe BLACK FIREPLACE HOOD GA6050 Helps deflect heat away from mantel or wall above fireplace BRASS FIREPLACE HOOD GA6052 Helps deflect heat away from mantel or wall above fireplace LAVA ROCK GA6060 Order when additional rock is desired 3 lb bag DAMPER...

Page 30: ...ATED PARTS BREAKDOWN CGD3924PR 7 16 16 17 25 16 3 2 1 4 11 21 10 9 12 15 8 19 18 20 6 14 5 13 13 REM OTE OFF ON 22 23 24 O F F P I L O T O N H I L O O F F P I L O T O N H I L O AU TO MA N OF F ST AT US ON LO HI TE MP 20 ...

Page 31: ...1 11 102966 01 Upper Bracket 1 12 102772 01 Burner 1 13 099387 09 Pilot Tube 1 14 103781 02 Gas Control Valve 1 15 103345 01 Lower Bracket 1 16 M11084 38 Screw 8 x 38 7 17 102775 06CK Painted Base Assembly 1 18 098271 07 Ignitor Cable 1 19 102445 01 Piezo Ignitor 1 20 103823 01 Remote Set Incl Transmitter 1 21 104099 01 Heat Shield 1 22 098304 01 Screw 2 23 103784 02 Flame Adjustment Knob 1 24 103...

Page 32: ...ll such other costs related to repairing a defective heater will be the responsibility of the owner TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHE 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 TWO 2 YEAR ON...

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