Desa FLAME-MAX H18N Owner'S Operation And Installation Manual Download Page 29

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110399-01J

POSSIBLE CAUSE

1. Control knob not fully

pressed in

2. Control knob not pressed in

long enough

3. Safety interlock system has

been triggered

4. Equipment shutoff valve not

fully open

5. Pilot flame not touching

thermocouple, which allows
thermocouple to cool, caus

ing 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

6. Thermocouple connection

loose at control valve

7. Thermocouple damaged
8. Control valve damaged

1. Inlet gas pressure is too

low

2. Burner orifice(s) clogged

3. Thermopile leads discon-

nected or improperly con-
nected (Remote-Ready
Models Only)

4. Burners will not come on in

remote position (Remote-
Ready Models Only)

1. Manifold pressure is too

low

2. Burner orifice(s) clogged

1. Burner orifice is clogged or

damaged

2. Damaged burner
3. Gas regulator defective

OBSERVED PROBLEM

ODS/pilot lights but flame
goes out when control knob

is released

Burner does not light after
ODS/pilot is lit

Delayed ignition of one or
both burners

Burner backfiring during
combustion

REMEDY

1. Press in control knob fully

2. After ODS/pilot lights, keep

control knob pressed in 30
seconds

3. Wait one minute for safety

interlock system to reset.
Repeat ignition operation

4. Fully open equipment shut-

off valve

5. A) Contact local natural or

propane/LP gas company

B) Clean ODS/pilot (see

Cleaning and Maintenance

page 27) or replace ODS/
pilot assembly

6. Hand tighten until snug,

then tighten 1/4 turn more

7. Replace pilot assembly
8. Replace control valve

1. Contact local natural or

propane/LP gas company

2. Clean burner(s) (see

Cleaning

and Maintenance

, page 27)

or replace burner orifice(s)

3. Reconnect leads (see

Wir-

ing Diagram

, page 28)

4. Replace battery in transmit-

ter and receiver

1. Contact local natural or

propane/LP gas company

2. Clean burner(s) (see

Cleaning

and Maintenance

, page 27)

or replace burner orifice(s)

1. Clean burner (see

Cleaning

and Maintenance

, page 27)

or replace burner orifice

2. Replace damaged burner
3. Replace gas regulator

TROUBLESHOOTING

Continued

Summary of Contents for FLAME-MAX H18N

Page 1: ...ing 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...

Page 2: ...at er It uses air oxygen from the room in which it is installed Provisions for adequate combustion and ventilation air must be provided Refer to Air for Combustion and Ven tilation section on page 6 o...

Page 3: ...ts 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 WARNING Any change to this heater or its controls can b...

Page 4: ...there are no obstructions across openings of fireplace safety Continued 8 To prevent the creation of soot follow the instructions in Cleaning and Maintenance page 27 9 Before using furniture polish w...

Page 5: ...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 Nationa...

Page 6: ...e it is good to make your home energy efficient your home needs to breathe Fresh air must enter your home All fuel burning ap pliances need fresh air for proper combustion and ventilation Exhaust fans...

Page 7: ...ustion and ventilation Continued 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...

Page 8: ...re 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 Air for Combustion and Ventilation for required size of ventilation grills...

Page 9: ...eateanddistribute soot within the house Inspect chimney flue for damage If damaged repair flue before operating heater WARNING Seal any fresh air vents or ash clean out doors located on floor or wall...

Page 10: ...is made of combustible material and protrudes 3 1 2 from the wall This com bustible material must be 4 from the side of the fireplace cabinet see Figure 4 Installation Continued Note When installing...

Page 11: ...noncombustible material s above the fireplace opening Noncombustible materials such as slate marble tile etc must be at least 1 2 thick With sheet metal you must have noncombustible material behind i...

Page 12: ...with clamp accessory See the following chart for minimum perma nent flue opening you must provide Attach damper clamp so the minimum permanent flue opening will be maintained at all times 14 Min Combu...

Page 13: ...ovided with heater approved flexible gas hose and fittings not provided if allowed by local codes sealant resistant to propane LP gas not provided electric drill with 3 16 drill bit metal or masonry a...

Page 14: ...t supplied Install the external regulator between the heater and propane LP supply WARNING Never connect natural gas fireplace to private non utility gas wells This gas is commonly known as wellhead g...

Page 15: ...ued Propane LP Supply Tank External Regulator with Vent Pointing Down Figure 15 External Regulator With Vent Pointing Down Figure 16 Gas Connection Variable Manually Controlled Models Only Purchase th...

Page 16: ...as 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 compres...

Page 17: ...es in contact with any log WiththeheatersettoHigh check toseeifflamescontactanylog If so reposition logs according to the log installation instructions in this manual Flames contact ing logs will crea...

Page 18: ...see Figure 23 For Golden Oak models make sure middle section at bottom of log set is seated into U shaped cutout in center of chassis see Figure 24 IMPORTANT Make sure log does not cover any burner po...

Page 19: ...k 5 Piece Log Set Log 2 Figure 28 Installing Golden Oak 5 Piece Log Set Log 3 Figure 29 Installing Golden Oak 5 Piece Log Set Logs 4 and 5 U shaped Cutout in Chassis Chassis Burner Middle Log 2 Front...

Page 20: ...es to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety information column 1 If you don t smell gas go to the next step for your safety read be...

Page 21: ...d shut off burners only turn control knob clockwise to the HI position then press in and turn clock wise to PILOT position CAUTION Do not try to ad just heating levels by using the equipment shutoff v...

Page 22: ...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 nev...

Page 23: ...n for 30 sec onds after lighting pilot After 30 seconds release control knob If control knob does not pop out when released contact a qualified service person or gas supplier for repairs Note If pilot...

Page 24: ...Remote ready Models to turn gas off to appliance Shutting Off Heater 1 Turn control knob clockwise to the OFF position 2a Set selector switch in the OFF position 2b If Using Optional Hand Held Remote...

Page 25: ...of the room facing towards the fireplace Operation Continued Remote ready Models Note Do not hold the hand held remote for a long time Body temperature will affect its operation in the AUTO mode Safe...

Page 26: ...ent All round burner flame holes should be open with a small blue flame present Some burner flame holes may become blocked by debris or rust with no flame present If so turn off heater and let cool R...

Page 27: ...nspected yearly by a qualified service person Heater may need more frequent cleaning due to excessive lint fromcarpeting pethair bedding material etc WARNING Failure to keep the primary air opening s...

Page 28: ...d 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is no spark at ODS pilot When ignitor butto...

Page 29: ...goes out when control knob is released Burner does not light after ODS pilot is lit Delayed ignition of one or both burners Burner backfiring during combustion REMEDY 1 Press in control knob fully 2...

Page 30: ...h 12 4 Clean burners see Cleaning and Maintenance page 27 or replace burner orifice 1 Turn heater off when us ing furniture polish wax carpet cleaners or similar products 1 Refer to Air for Combustion...

Page 31: ...esh air is available 2 Low line pressure 3 ODS pilot is partially clogged 1 Gas leak See Warning statement at top of page 2 Control valve defective 1 Foreign matter between control valve and burner 2...

Page 32: ...water Maximum 10 5 W C Minimum 5 W C For purpose of input adjustment HD24PR HD30PR HD36PR Rating Variable 20 000 39 000 Btu Hr Gas Type Propane LP Ignition Piezo Manifold Pressure 8 W C Inlet Gas Pre...

Page 33: ...CLAMP GA6080 For all models Permanently opens chimney flue damper for vented operation LAVA ROCK GA6060 For all models Order when additional rock is desired CLEANING KIT CCK For all models Your vent f...

Page 34: ...www desatech com 110399 01J 34 Parts Variable Manually Controlled Flame Max Vintage Oak Log Models H18P H18N H24P and H24N 5 1 2 1 1 13 4 11 12 4 8 4 6 7 9 10 16 15 17 19 3 18 14 20 18 21 19 2...

Page 35: ...10 Gas Regulator 1 098867 14 Gas Regulator 1 9 111331 04 Outlet Burner Tube 1 10 102798 01 Inlet Tube 1 11 099056 18 Burner Orifice Injector 1 099056 19 Burner Orifice Injector 1 099056 20 Burner Orif...

Page 36: ...R HD36PR and HD36NR KEY NO 18 Models 24 Models 30 Models 36 Models DESCRIPTION QTY 1 110397 03 110397 04 110397 05 Five Piece Golden Oak Log Set 1 1 1 110315 01 110313 01 110320 01 Front Log 1 1 2 110...

Page 37: ...Pilot Tube LP 1 099387 15 Pilot Tube NG Valve to regulator 1 12 103781 01 Gas Control Valve 1 103781 02 Gas Control Valve 1 13 103345 01 Lower Bracket 1 103345 02rv Lower Bracket 1 14 M11084 38 Screw...

Page 38: ..._____________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____...

Page 39: ..._____________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____...

Page 40: ...proved by DESA Heating LLC Warranty parts must be obtained through authorized dealers of this prod uct and or DESA Heating LLC who will provide original factory replacement parts Failure to use origin...

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