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21

103449

OWNER’S MANUAL

REMEDY

1. This is common with most heaters. If

noise is excessive, contact qualified ser-
vice person

1. Open window to ventilate room. Stop us-

ing odor causing products while heater
is running

2. Refill supply tank
3. Locate and correct all leaks (see Check-

ing Gas Connections, page 12)

1. Open window and/or door for ventila-

tion

2. Contact local natural gas company
3. Clean ODS/pilot (see Cleaning and

Maintenance, page 18)

1. Locate and correct all leaks (see Check-

ing Gas Connections, page 12)

2. Replace gas control

1. Take apart gas tubing and remove for-

eign matter

2. Locate and correct all leaks (see Check-

ing Gas Connections, page 12)

1. Move hand-held remote control unit far-

ther away from the heater

 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 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.

POSSIBLE CAUSE

1. Metal expanding while heating or con-

tracting while cooling

1. Heater burning vapors from paint, hair

spray, glues, cleaners, chemicals, new
carpet, etc. (See 

IMPORTANT

  state-

ment above)

2. Low fuel supply
3. Gas leak.

 See Warning statement

above

1. Not enough fresh air is available

2. Low line pressure
3. ODS/pilot is partially clogged

1. Gas leak. 

See Warning statement

above

2. Gas control defective

1. Foreign matter between control valve

and burner

2. Gas leak. 

See Warning statement

above

1. Hand-held remote control unit needs to

be moved away from heater

OBSERVED PROBLEM

Heater produces a clicking/ticking noise
just after burners are 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

Log set cycles to pilot, but room tempera-
ture drops to a lower than ideal level before
log set comes back on

TROUBLESHOOTING

Continued

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. These odors
will disappear over time.

www.desatech.com

Summary of Contents for VS18NR

Page 1: ...roperty damage Refer to this manual for cor rect installation and operational proce dures For assistance or additional in formation consult a qualified installer service agency or the gas supplier WAR...

Page 2: ...with a fire placescreeninplace Makesurefireplace screen is closed before running heater 8 This log heater is designed to be smoke less If logs ever appear to smoke turn offheaterandcallaqualifiedservi...

Page 3: ...ed to ANS Z21 11 2 standard for unvented heaters State and local codes in some areas prohibit the use of vent free heaters This heater may also be operated as a vented decorative ANS Z21 60 product by...

Page 4: ...rating of one perm 6x10 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 ar...

Page 5: ...ances Direct vent draws combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used _________________ Btu Hr max...

Page 6: ...d Crawl Space To Crawl Space To Attic Or Remove Door into Adjoining Room Option 3 Ventilation Grills Into Adjoining Room Option 2 Ventilation Grills Into Adjoining Room Option 1 12 12 Figure 2 Ventila...

Page 7: ...l codes INSTALLATION CHECK GAS TYPE Use only natural gas If your gas supply is not natural gas do not install heater Call dealer where you bought heater for proper type heater INSTALLATION AND CLEARAN...

Page 8: ...ntel If not using a mantel follow the information below You must have noncombustible material s above the fireplace opening Noncombus tible materials such as slate marble tile etc must be at least 1 2...

Page 9: ...pening Underside of Mantel Shelf Mantel Shelf 12 A 20 241 2 271 2 30 All minimum distances are in inches 2 1 2 6 8 10 Minimum Noncombustible Material 8 Min 12 15 18 All minimum distances are in inches...

Page 10: ...rsarelevel Ifheaterisnotlevel heaterwill not work properly Area of Various Standard Round Flues Diameter ins Area sq ins 5 20 sq inches 6 29 sq inches 7 39 sq inches 8 51 sq inches INSTALLING DAMPER C...

Page 11: ...ed Purchase the optional A G A design certified manual shutoff valve from your dealer See Accessories page 23 Minimum inlet pressure for purpose of input adjustment Figure 13 Gas Connection Tee Joint...

Page 12: ...ts 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 3...

Page 13: ...ure 16 Push back of logs flush with metal grate bar Note 18 model has only one front log 2 Rest bottom middle log 2 behind metal posts on front burner Make sure the grooves in the bottom of the log fi...

Page 14: ...re 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 us...

Page 15: ...em etc For wall thermostat operation follow in struction supplied with thermostat acces sory GWMT1 For wall switch operation followinstructionssuppliedwithGWMS2 OPTIONAL REMOTE OPERATION NOTICE You mu...

Page 16: ...Off with the Hand Held Remote Unit Figure 24 Thermostat Hand Held Remote Control Unit Selections GHRCT only The log heater will automatically cycle between pilot and the heat setting that has been se...

Page 17: ...e pattern Theincorrectpilotflameisnottouch ing the thermocouple This will cause the thermocouple to cool When the thermo couple cools the heater will shut down If pilot flame pattern is incorrect as s...

Page 18: ...ware store or home center may carry com pressed air in a can You can use a vacuum cleaner in the blow position If using com pressed air in a can please follow the direc tions on the can If you don t f...

Page 19: ...D 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...

Page 20: ...en using furniture polish wax carpet cleaners or similar products 1 Replace 9 volt batteries in receiver and remote control OBSERVED PROBLEM One or both burners do not light after ODS pilot is lit Del...

Page 21: ...SIBLE CAUSE 1 Metal expanding while heating or con tracting while cooling 1 Heater burning vapors from paint hair spray glues cleaners chemicals new carpet etc See IMPORTANT state ment above 2 Low fue...

Page 22: ...r 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 DESA LOG 1 800 337 2564 You...

Page 23: ...LL MOUNT ON OFF SWITCH GWMS2 Not Shown For all models Allows the gas log heater to be turned on and off with a wall switch WALL MOUNT THERMOSTAT SWITCH GWMS1 Not Shown For all models The desired comfo...

Page 24: ...URAL GAS LOG HEATER DESA INTERNATIONAL ILLUSTRATED PARTS BREAKDOWN VARIABLE CONTROL CFS18NR VS18NR VS24NR VS30NR 8 9 10 11 8 8 12 13 23 14 26 27 6 6 16 19 31 21 22 29 30 17 24 20 15 28 18 10 1 10 2 6...

Page 25: ...271 03 Ignitor Cable 1 14 102445 01 102445 01 102445 01 Piezo Ignitor 1 15 103588 01 103588 01 103588 01 Heat Shield 1 16 103782 01 103782 01 103782 01 Valve Bracket 1 17 M12461 26 M12461 26 M12461 26...

Page 26: ...such other costs related to repairing a defective heater will be the responsibility of the owner TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHEPRODUCT THIS EXPRESS WARRANTY EX...

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