Desa MVO18VNA, MVO18VPA, MVO24VNA, MVO24VPA User Manual

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Desa MVO18VNA, MVO18VPA, MVO24VNA, MVO24VPA User Manual

VENTED DECORATIVE GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL

MVO24VNA, MVO24VPA,

MVO18VNA AND MVO18VPA

WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing 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 try to light any appliance.

Donottouchanyelectricalswitch;donotuseany phone in your building.

Immediatelycallyourgassupplierfromaneighbor’s phone. Follow the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire department.

Installationandservicemustbeperformedbyaqualified installer, service agency or the gas supplier.

Save this manual for future reference. For more information, visit www.desatech.com

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or propertydamage.Refertothismanualforcorrectinstallation and operational procedures. For assistance or additional information consult a qualified installer, service agency or the gas supplier.

WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fireplace, constructed of noncombustible material and connected to a working flue. (See page 6 for minimum flue opening.

WARNING: This is a gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to the National Fuel Gas Codes, ANSI Z233.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.

This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes.

This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

State of Massachusetts: The installation must be made byalicensedplumberorgasfitterintheCommonwealth of Massachusetts.

TABLE OF CONTENTS

Safety Information ...............................................

3

Cleaning and Maintenance

................................

12

Local Codes ........................................................

4

Troubleshooting.................................................

 

13

Product Identification...........................................

5

Service Hints .....................................................

 

17

Unpacking ...........................................................

5

Technical Service ..............................................

 

17

Product Features.................................................

5

Replacement Parts............................................

 

17

Installation ...........................................................

5

Accessories.......................................................

 

17

Operating Appliance..........................................

10

Illustrated Parts Breakdown .......and Parts List

18

Wiring Diagram...................................................

11

Warranty Information...........................

Back Cover

Inspecting Burners ............................................

12

 

 

 

 

 

 

2

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114924 - 01B

SAFETY INFORMATION

WARNING:Thisproductcontainsand/orgenerateschemicals known to the State of California to cause cancer or birth defects or other reproductive harm.

WARNING: Keep flue open when operating unit.

IMPORTANT: Read this owner’s manual carefully and completely beforetryingtoassemble,operate orservicethislogset.Improperuse of this log set can cause serious injury or death from burns, fire, explosion, electrical shock and carbon monoxide poisoning.

DANGER:Carbonmonoxide poisoning may lead to death!

CarbonMonoxidePoisoning:Earlysignsofcarbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs, the log set may not be working properly. Get fresh air at once! Have log set serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart orlungdiseaseoranemia,thoseundertheinfluence of alcohol and those at high altitudes.

Natural & LP Gas: Natural & LPgas are odorless. An odor-making agent is added to the gas. The odor helps you detect a gas leak. However, the odoraddedtothegascanfade.Gasmaybepresent even though no odor exists.

Makecertainyoureadandunderstandallwarnings. 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 lava rocks on burner.

WARNING:Donotuseablowerinsert,heatexchangerinsertor otheraccessorynotapprovedfor use with this appliance.

WARNING: Any change to this log set or its controls can be dangerous.

WARNING: This appliance is equipped for (natural or propane/LP) gas. Field conversion is not permitted.

WARNING:Donotallowfans toblowdirectlyintothefireplace.

Avoidanydraftsthatalterburner

flame patterns.

WARNING: Installed decorative glass door enclosures must be fully opened when operating this gas appliance.

Due to high temperatures, the applianceshouldbelocatedout oftrafficandawayfromfurniture and draperies.

Do not place clothing or other

flammable material on or near the appliance. Never place any objects on the appliance.

Appliance assembly becomes very hot when running. Keep childrenandadultsawayfromhot surfacetoavoidburnsorclothing ignition.Appliancewillremainhot for a time after shutdown. Allow surface to cool before touching.

Carefully supervise young children when they are in the room withappliance.Whenusinghandheld remote accessory, keep selector switch in the OFF position to prevent children from turning on burners with remote.

114924-01B

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3

SAFETY INFORMATION

Continued

You must operate this appliance with a fireplace screen in place.

Make sure fireplace screen is closed before running appliance.

Keep the appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids.

Children and adults should be alertedtothehazardofhightemperatureandshouldstayawayto avoid burns or clothing ignition.

1.This appliance, as supplied, is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

2.Do not place propane/LP supply tank(s) inside the structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only).

3.If you smell gas

shut off gas supply

do not try to light any appliance

donottouchanyelectricalswitch;donotuse any phone in your building

immediately call your gas supplier from a neighborʼs phone. Follow the gas supplierʼs instructions

if you cannot reach your gas supplier, call the fire department

4.Never install the log set

in a recreational vehicle

where curtains, furniture, clothing or other flammable objects are less than 42 inches from the front, top or sides of the log set.

in high traffic areas

in windy or drafty areas

5.Beforeinstallinginasolidfuelburningfireplace, thechimneyflueandfireboxmustbecleanedof soot,creosote,ashesandloosepaintbyaqualified chimney cleaner. Creosote will ignite if highly heated.Inspectchimneyfluefordamage.Ifdamaged, repair flue before operating appliance.

6.Thislogsetisdesignedtobesmokeless.Iflogs ever appear to smoke, turn off appliance and call a qualified service person. Note: During initial operation, slight smoking could occur due to log curing and the burning of manufacturing residues.You may wish to add more ventilation by opening a window.

7.Youmustoperatethislogsetwithfireplacescreen in place and fully closed. Unless provided by other means, screens shall have openings for introduction of combustion air.

8.Iffireplacehasglassdoors,neveroperatewith glass doors closed, If you operate heater with doorsclosed,heatbuildupinsidefireplacewill cause glass to burst.Also if fireplace opening has vents at the bottom, you must open the vents before operating heater.

9.Toreducethecreationofsoot,followtheinstructions in Cleaning and Maintenance, page 12.

10.Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this log set.

11.The installation and provisions for combustion and ventilation air must conform with the National Fuel Gas Codes, ANSI Z233.1/NFPA 54, Section 5.3, Air for combustion and Ventilation.

12.Do not run heater

where flammable liquids or vapors are used or stored

under dusty conditions

13.Do not burn solid fuel in the fireplace after installing the log set. Do not use this log set to cook food or burn paper or other objects.

14.Log set becomes very hot when in use. Keep children and adults away from hot surface to avoid burns or clothing ignition. Log set will remain hot for a time after shutdown. Allow surface to cool before touching.

15.Carefullysuperviseyoungchildrenwhenthey are in the room with the log set.

16.Do not use heater if any part has been exposed to or under water. Immediately call a qualified service technician to inspect the room heater andtoreplaceanypartofthecontrolsystemand any gas control which has been under water.

17.Turn log set off and let cool before servicing, installing or repairing. Only a qualified service person should install, service or repair log set.

18.Provide adequate clearances around air openings.

LOCAL CODES

Installanduselogsetwithcare.Followalllocalcodes. 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

National Fire Protection Association, Inc. Battery march park

Quincy, MA 02269

4

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114924-01B

PRODUCT

IDENTIFICATION

WARNING:Failuretoposition thepartsinaccordancewiththese diagrams or failure to use only parts specifically approved with thisappliancemayresultinproperty damage or personal injury.

Ember

 

 

Pod

 

 

 

 

Log Set

Piezo

 

Assembly

 

 

Ignitor

 

 

Control

Chassis

 

Knobs

 

Assembly

 

 

 

Figure 1 - Product Identification

UNPACKING

 

CAUTION:Donotremovethe

data plates from the grate as-

sembly. The data plates contain

important warranty and safety

information.

 

 

1.Remove log set assembly from carton.

IMPORTANT: Do not pick up assembly by logs. This could damage the unit. Always handle assembly by grate.

2.Remove all protective packaging applied to log set for shipment.

3.Check all items for any shipping damage. If damaged, promptly inform dealer where you bought appliance.

PRODUCT FEATURES

This unitized gas log set is tested and approved to ANSIZ21.60-2003 and CSA 2.2-2003 as a vented decorative appliance.

This unit has a piezo ignitor. This system requires no matches,batteriesorothersourcestolightappliance.

An ON/OFF remote is available for use with this vented log set (see Accessories, page 17). A wall thermostat or hand-held thermostat remote is not to be used with vented decorative appliances.

INSTALLATION

WARNING: A qualified service person must install heater. Follow all local codes.

WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a qualifiedchimneycleaner.Creosotewilligniteifhighlyheated.A dirtychimneyfluemaycreateand distribute soot within the house. Inspectchimneyfluefordamage. If damaged, repair flue damper before operating appliance.

CAUTION:Thisheatercreates warmaircurrents.Thesecurrents move heat to wall surfaces next to heater. Installing heater next tovinylorclothwallcoveringsor operatingheaterwhereimpurities (such as, but not limited to, tobacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in the air exist, may discolor walls or cause odors.

NOTICE:Installation,serviceand repair of this appliance must be performedbyaqualifiedinstaller, service agency, company or gas supplier experienced with this type of gas appliance. Only factory authorized components listed in these instructions may be used in accordance with the manufacturer's instructions and all codes and requirements of the authority having jurisdiction. Any modifications to or use of unauthorized components or accessory items will void the manufacturer’swarrantyandmay result in a hazardous condition.

114924-01B

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5

INSTALLATION

Continued

CHECK GAS TYPE

Usethecorrectgastype(naturalorpropane/LP)for your unit. If your gas supply is not correct, do not instal in fireplace. Call dealer where you bought the appliance for proper type of appliance.

WARNING: This appliance is equipped for (natural or propane/LP) gas. Field conversion is not permitted.

INSTALLATION AND CLEARANCES

Figure 2 shows technical information regarding the installation of your gas log set. Please make sure all specifications shown are applicable before installation is attempted.

 

SPECIFICATIONS (W.C.)

 

FUEL INLET

MANIFOLD

 

PRESSURE

PRESSURE

 

Min.

Max.

 

NG

7"

10.5"

3.5"

LP

11"

14"

10"

Figure 2 - Technical Information Chart

FLUE OPENING SPECIFICATIONS

Note:Thisventedappliancemustbeinstalledonly

inasolid-fuelburningorUL127factory-builtfire-

place constructed of noncombustible material and

connectedtoaworkingflue.Thefireplacechimney

must have a permanent vent opening to outside

with minimum openings shown in Figure 3.

 

 

 

 

 

 

LOG SIZING REQUIREMENTS

 

 

 

 

 

 

 

MINIMUM FIREBOX SIZE

 

LOG

 

 

 

FRONT REAR* MIN. FLUE

SIZE HEIGHT DEPTH WIDTH WIDTH

SIZE

18"

20"

14"

25"

20.5"

6.5"

24"

20"

14"

29"

24.5"

6.5"

*Measured at 14" depth

 

 

 

 

Figure 3 - Sizes and Clearances

VENTING SPECIFICATIONS FOR

INSTALLATION

 

 

 

The fireplace chimney flue and vent must be draft-

ingproperly.Tochecktheventforproperdrafting:

Light a tightly rolled newspaper on one end and

place it at the inside front edge of the fireplace.

Observethesmokeandbesuretheventisproperly drawing it up the chimney. If the smoke spills out intotheroom,extinguishtheflameandremoveany obstruction until proper venting is achieved.

Thechimneyfluedampermustbefixedopentoprovideaminimumof32squareinchoffreeairopening atalltimesduringoperationofthelogset.Adamper clamp is included to secure the damper.

The minimum flue sizes shown in Figure 3 are basedona6'chimneyheightusingroundpipe.Your minimum flue size will vary based on input rate and chimneyheight.RefertotheNationalFuelGasCode ANSI Z223.1/NFPA 54, Section 6.6 for details.

INSTALLING DAMPER CLAMP

Secure the damper stop clam to the edge of the

damper as shown in Figure 4. If for any reason

this clamp doesn't work on your fireplace, another

suitableclamporpermanentstopmustbeinstalled,

or the damper blade must be cut or removed.

Damper

 

Clamp

Damper

 

Damper

 

Clamp

 

Damper

Damper

Masonry

Manufactured

Fireplace

Fireplace

Figure 4 - Attaching Damper Clamp

INSTALLING REMOTE CONTROL

ACCESSORY BRACKET

Ifinstallingoptionalremotecontrol accessoryyou

will need to install the remote accessory bracket

for the receiver.

 

Use screws provided to attach bracket to valve

bracket as shown in Figure 5.

Follow installation instructions included with

remote accessory.

 

Valve Bracket

 

Remote

 

Bracket

 

Figure 5 - Attaching Remote Bracket to

Valve Bracket

6

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114924-01B

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