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114924-01B

12

Figure 15 - Correct Pilot Flame Pattern 

(Your pilot may vary from pilots shown)

Figure 16 - Incorrect Pilot Flame Pattern 

(Your pilot may vary from pilots shown)

Thermocouple

Thermocouple

INSPECTING BURNERS

Check pilot flame pattern and burner flame pat-

terns often.

PILOT FLAME PATTERN

You can view the pilot light through the pilot view-

ing hole on the pilot bracket. This is located under 

the front grate bar on the right side of the log set.
Figure  15  shows  a  correct  pilot  flame  pattern. 

Figure 16 shows an incorrect pilot flame pattern. 

The incorrect pilot flame is not touching the ther-

mocouple. This will cause the thermocouple to 

cool. When the thermocouple cools, the appliance 

will shut down.
If pilot flame pattern is incorrect, as shown in 

Figure 16
•  turn appliance off (see

 To Turn Off Gas to 

Appliance

, page 11)

•  see 

Troubleshooting

, page 13

Note:

 The pilot flame on natural gas units will 

have a slight curve but flames should be blue and 

have no yellow or orange color.

BURNER FLAME PATTERN

Figure 17 shows correct burner flame pattern.

NOTICE: Do not mistake orange 

flames with yellow tipping. Dirt 

or other fine particles are burned 

by  appliance,  causing  brief 

patches of orange flame.

Figure 17 - Correct Burner Flame Pattern

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 passageways of fire-

place clean. Inspect these areas 

of fireplace before each use. Have 

fireplace  and  chimney  (if  appli-

cable) inspected yearly by a quali-

fied service person. Fireplace may 

need more frequent cleaning due 

to excessive lint from carpeting, 

bedding material, etc.

Only limited cleaning will be required under nor-

mal use of this appliance. Dust the front grate and 

top of receiver/valve. Do not use cleaning fluids to 

clean logs or any other part of the appliance.
If, after a period of use, the flames start to exhibit 

unusual shapes and behavior or the burner fails to 

ignite smoothly, then the burner holes may require 

some cleaning. If this happens, we recommend 

that you contact your nearest authorized service 

technician to get the appliance serviced.
•  Keep area around log set clean and clear of debris.
•  Periodically inspect the air mixer and burner 

tube for foreign matter blocking the air inlet 

and flame holes.

•  Once every year a qualified agency or certified 

chimney sweep should examine and clean the 

venting system of the fireplace.

Figure 18 - Incorrect Burner Flame 

Pattern

If burner flame pattern is incorrect, as shown in 

Figure 18.
•  turn appliance off (see 

To Turn Off Gas to Ap-

pliance

, page 10)

•  see 

Troubleshooting,

 page 13

Dark Orange 
Flames

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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