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114924-01B

15

OBSERVED PROBLEM

Dark orange flame in burner dur-

ing burner combustion

Slight smoke or odor during initial 

operation

Produces a whistling noise when 

burners are lit

White  powder  residue  forming 

within burner box or on adjacent 

walls or furniture

REMEDY

1. Check  burner(s)  for  dirt 

and  debris.  If  found,  clean 

burner(s) (see 

Cleaning and 

Maintenance

, page 12)

2. Replace gas regulator

1. Problem will stop after a few 

hours of operation

1. Turn  control  knob  to  LO 

position and let warm up for 

a minute

2. Operate  burners  until  air  is 

removed from line. Have gas 

line checked by local natural 

or propane/LP gas company.

3. Observe minimum installation 

clearances (see page 6)

4. Clean burners (see 

Cleaning 

and Maintenance

, page 12) or 

replace burner orifice(s)

1. Heat  turned  off  when  using 

furniture polish, wax, carpet 

cleaners or similar products

POSSIBLE CAUSE

1. Not enough air

2. Gas regulator defective

1. Residues from manufacturing 

processes and log curing

1. Turning control knob to HI 

position  when  burners  are 

cold

2. Air is gas line

3. Air passageways on heater 

blocked

4. Dirty  or  partially  clogged 

burner orifice(s)

1. When  heated,  vapors  from 

furniture polish, wax, carpet 

cleaners, etc, turn into white 

powder residue

TROUBLESHOOTING

Continued

Summary of Contents for Firewerks MVO18VNA

Page 1: ...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 Immediatelycallyourgassupplierfromaneighbor...

Page 2: ...s ANSI Z233 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation This appliance may be installed in an aftermarket per manently located manufactured mobile home where not prohibited by local codes...

Page 3: ...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 log set WARNING Do not place log scraps or...

Page 4: ...en in place and fully closed Unless provided by other means screens shall have openings for introduction of combustion air 8 If replace has glass doors never operate with glass doors closed If you ope...

Page 5: ...ot to be used with vented decorative appliances INSTALLATION WARNING A quali ed ser vice person must install heater Follow all local codes WARNING Before installing in a solid fuel burning replace the...

Page 6: ...re place constructed of noncombustible material and connected to a working ue The replace chimney must have a permanent vent opening to outside with minimum openings shown in Figure 3 Figure 2 Technic...

Page 7: ...read inlet connection to the control valve CAUTION Never connect propane LP unit directly to the propane LP supply This unit re quiresanexternalregulator not supplied Install the external regulator be...

Page 8: ...is not installed or is installed wrong heater may not run properly CAUTION Avoid damage to gas control Hold gas control with wrench when connecting it to gas piping and or ttings Figure 7 Gas Connect...

Page 9: ...oints Propane LP Gas Only Figure 10 Checking Gas Joints Natural Gas Only Equipment Shutoff Valve Gas Meter Control Valve Location Pressure Testing Appliance Gas Connections 1 Open equipment shutoff va...

Page 10: ...been under water LIGHTING INSTRUCTIONS 1 STOP Read the safety information col umn 1 2 Make sure switch is in OFF position 3 Be sure gas line shut off valve is OPEN 4 Press in and turn control knob clo...

Page 11: ...hand held remote was on when selector switch was last turned off You can now turn the burner on and off with the hand held remote control unit OPERATING APPLIANCE Continued Figure 13 Setting the Sele...

Page 12: ...attern Yellow Flames with Orange Streaks CLEANING AND MAINTENANCE WARNING Turn off the ap pliance and allow to cool before cleaning CAUTION You must keep control areas burners and cir culating air pas...

Page 13: ...in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is in correct When ignitor button is pressed there is no spark at ODS pilot When igni...

Page 14: ...page 11 1 Contact local natural or propane LP gas company 2 Clean burner s see Cleaning and Maintenance page 12 1 Clean burner see Cleaning and Maintenance page 12 or replace burner ori ce 2 Replace d...

Page 15: ...ate burners until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum installation clearances see page 6 4 Clean burners see Cleaning and Mainte...

Page 16: ...nding while heating or contracting while cooling 1 Appliance burning vapors from paint hair spray glues cleaners chemicals new carpet etc See IMPORTANT statement above 2 Low fuel supply propane LP onl...

Page 17: ...lit burners will have delayed ignition propane LP gas supply may be low You may feel your gas pressure is too low If so contact your local propane LP or natural gas supplier TECHNICAL SERVICE You may...

Page 18: ...www desatech com 114924 01B 18 ILLUSTRATED PARTS BREAKDOWN MVO24VNA MVO24VPA MVO18VNA MVO18VPA 1 2 3 4 5 6 17 16 15 7 8 9 10 11 12 14 13...

Page 19: ...1 111807 02 111807 01 111807 02 Valve 1 10 112376 01 103778 01 112376 01 103778 01 Pilot Assembly 1 11 111828 01 111818 01 111828 01 111828 01 Brass Fitting 2 12 114930 02 114930 02 114930 01 114930 0...

Page 20: ...The heater MUST be installed by a quali ed installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original conditi...

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