Firewerks MVO18VNA Owner'S Operation And Installation Manual Download Page 17

www.desatech.com

114924-01D

17

Purchase these appliances from your local dealer. 

If they can not supply these accessories, call DESA 

at 1-866-672-6040 for referral information. You 

can also write to the address listed on the back 

page of this manual.

EqUIPMENT SHUTOFF VALVE 
GA5010

Equipment shutoff valve with 1/8" NPT tap. Fits 

1/2" pipe.

FIREPLACE HOOD

Black - GA6050
Brass - GA6052
Antique Brass - GA6053

Helps deflect heat away from mantel or wall above 

fireplace. Fits opening 28" to 48" wide.

DAMPER CLAMP - GA6080

(Not Shown)

Permanently  opens  chimney  flue  damper  for 

vented operation.

LAVA ROCK - GA6060

(Not Shown)

Order when additional rock is desired (1.8 lb. bag).

RECEIvER AND HAND-HELD 
REMOTE CONTROL KIT - HRC100

Allows the gas log heater to be turned on and off 

using a hand-held remote control. A wall-mount 

docking station is included.

CLEANING kIT - GCk

(Not Shown)

Your vented gas appliance requires regular cleaning 

and maintenance to prevent performance problems. 

This kit gives you the tools and instructions to make 

it easy to clean all critical areas of your appliance.

ACCESSORIES

SERVICE HINTS

When Gas Pressure is Too Low

•  pilot will not stay lit

•  burners will have delayed ignition

•  (Propane/LP units only) 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 have further questions about installation, 

operation or troubleshooting. If so, contact DESA’s 

Technical Service Department at 1-866-672-6040. 

When calling please have your model and serial 

numbers of your heater ready.

You can also visit DESA’s technical services web 

site at 

www.desatech.com.

REPLACEMENT PARTS

Note:

 Use only original replacement parts. This 

will protect your warranty coverage for parts 

replaced under warranty. 

PARTS UNDER WARRANTY

Contact authorized dealers of this product. If they 

can’t supply original replacement part(s), call DESA’s 

Technical Service Department at 1-866-672-6040. 

When calling DESA, have ready

•  your name and address

•  model and serial numbers of your log set 

•  how log set was malfunctioning

•  type of gas used (propane/LP or natural gas)

•  purchase date

Usually, we will ask you to return the part to the 

factory.

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product. If they 

can’t supply original replacement part(s), call 

DESA at 1-866-672-6040 for referral information. 

When calling DESA, have ready

•  model number of your log set 

•  the replacement part number

Summary of Contents for MVO18VNA

Page 1: ...t any appliance Do not touch any electrical switch do not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach...

Page 2: ...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 This a...

Page 3: ...nt 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 log set WARNING Do not place log sc...

Page 4: ...eans screens shall have openings for introduction of combustion air 8 If fireplace has glass doors never operate with glass doors closed If you operate heater with doors closed heat buildup inside fir...

Page 5: ...used with vented decorative appliances Installation WARNING A qualified ser vice person must install heater Follow all local codes WARNING Before installing in a solid fuel burning fireplace the chim...

Page 6: ...le material and connected to a working flue The fireplace chimney must have a permanent vent opening to outside with minimum openings shown in Figure 3 Figure 2 Technical Information Chart Figure 3 Si...

Page 7: ...ollow all local codes WARNING This appliance requiresa3 8 NPT NationalPipe Thread inlet connection to the control valve CAUTION Never connect propane LP unit directly to the propane LP supply This uni...

Page 8: ...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 fittings Figure 7 Gas Connection Purchasetheoptiona...

Page 9: ...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 valve s...

Page 10: ...tch is in OFF position 3 Be sure gas line shut off valve is OPEN 4 Press in and turn control knob clockwise to the OFFposition see Figure 12 Note Knob cannot be turned from PILOT to OFFunless knob is...

Page 11: ...Setting the Selector Switch Control Knob and Flame Adjustment Knob for Remote Operation Selector Switch in REMOTE Position REMOTE OFF ON Piezo Ignitor Control Knob Flame Adjustment Knob Figure 14 On...

Page 12: ...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 pa...

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

Page 14: ...n burner s see Cleaning and Maintenance page 12 1 Clean burner see Cleaning and Maintenance page 12 or replace burner orifice 2 Replace damaged burner 3 Replace gas regulator 4 Correct external gas re...

Page 15: ...oved 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 bur...

Page 16: ...ding 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 only...

Page 17: ...will not stay lit burners will have delayed ignition Propane LPunits only propane LPgas supply may be low You may feel your gas pressure is too low If so contact your local propane LP or natural gas s...

Page 18: ...www desatech com 114924 01D 18 Illustrated Parts Breakdown Models MVO24VNA MVO24VPA MVO18VNA and MVO18VPA 1 2 3 4 5 6 17 16 15 7 8 9 10 11 12 14 13...

Page 19: ...01 Pilot Assembly 1 11 111828 01 Brass Fitting 1 111818 01 Brass Fitting 1 12 114930 01 Pilot Bracket 1 114930 02 Pilot Bracket 13 26205 Gas Orifice 1 23109 Gas Orifice 1 14 114936 02 Venturi 1 11493...

Page 20: ...installed by a qualified 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 condition because of norm...

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