Desa MVO18VNA, MVO18VPA, MVO24VNA, MVO24VPA User Manual

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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.
• 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.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
Save this manual for future reference.
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WARNING: Improper installation, adjustment, altera­tion, service or maintenance can cause injury or prop­erty damage. Refer to this manual for correct installation 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 by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Product Identification ...........................................
Unpacking ........................................................... 5
Product Features ................................................. 5
Installation ........................................................... 5
Operating Appliance .......................................... 10
Wiring Diagram ...................................................11
Inspecting Burners ............................................ 12
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Cleaning and Maintenance ................................ 12
Troubleshooting ................................................. 13
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Service Hints ..................................................... 17
Technical Servi
Replacement Parts ............................................ 17
Accessories ....................................................... 17
Illustrated Parts Breakdown and Parts List ....... 18
Warranty Information ...........................
ce .............................................. 17
Back Cover
114924-01B

SAFETY INFORMATION

WARNING: This product con­tains and/or generates chemicals 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 before trying to assemble, operate or service this log set. Improper use of this log set can cause serious injury or death from burns, fire, explosion, electrical shock and carbon monoxide poisoning.
WARNING: Any change to this log set or its controls can be dangerous.
WARNING: This appliance is equipped for (natural or pro pane/LP) gas. Field conversion is not permitted.
WARNING: Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner flame patterns.
WARNING: Installed decora­tive glass door enclosures must be fully opened when operating this gas appliance.
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DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon
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 or lung disease or anemia, those under the influence of alcohol and those at high altitudes.
Natural & LP Gas: Natural & LP gas are odorless.
An odor-making agent is added to the gas. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may be present 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
scraps or lava rocks on burner.
WARNING: Do not use a blow­er insert, heat exchanger insert or other accessory not approved for use with this appliance.
Due to high temperatures, the appliance should be located out of traffic and away from furniture 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 children and adults away from hot surface to avoid burns or clothing ignition. Appliance will remain hot for a time after shutdown. Allow surface to cool before touching.
Carefully supervise young chil­dren when they are in the room with appliance. When using hand­held remote accessory, keep se­lector switch in the OFF position to prevent children from turning on burners with remote.
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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 ma terials, gasoline and other flam mable vapors and liquids.
Children and adults should be alerted to the hazard of high tem perature and should stay away to 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) in side 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
• do not touch any electrical switch; do not use
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. 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 qualified chimney cleaner. Creosote will ignite if highly heated. Inspect chimney flue for damage. If dam aged, repair flue before operating appliance.
6. This logset is designed to be smokeless. If logs ever appear to smoke, turn off appliance and call a qualified service person. 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.
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Note: During
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7. You must operate this log set with fireplace screen in place and fully closed. Unless provided by other means, 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 fireplace will cause glass to burst. Also if fireplace opening has vents at the bottom, you must open the vents before operating heater.
9. To reduce the creation of soot, follow the instruc tions 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 Na
tional 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
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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. Carefully supervise young children when they 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 and to replace any part of the control system and 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. Prov ide adeq ua te clearan ce s around air openings.

LOCAL CODES

Install and use log set with care. Follow all local codes. 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.
National Fire Protection Association, Inc.
1430 Broadway
New York, NY 10018
Battery march park Quincy, MA 022
69
114924-01B
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PRODUCT
IDENTIFICATION
WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in prop­erty damage or personal injury.
Ember Pod

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 qualified chimney cleaner. Creo­sote will ignite if highly heated. A dirty chimney flue may create and distribute soot within the house. Inspect chimney flue for damage. If damaged, repair flue damper before operating appliance.
CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces next
Piezo Ignitor
Control Knobs
Figure 1 - Product Identification
Chassis Assembly
Log Set Assembly
to heater. Installing heater next

UNPACKING

CAUTION: Do not remove the data plates from the grate as­sembly. The data plates contain important warranty and safety information.
1. Remo ve log set asse mbly 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, batteries or other sources to light appliance.
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.
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to vinyl or cloth wall coverings or operating heater where impurities (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, service and repair of this appliance must be performed by a qualified installer, 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’s warranty and may result in a hazardous condition.
INSTALLATION
Continued
CHECK GAS TYPE
Use the correct gas type (natural or propane/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: This vented appliance must be installed only in a solid-fuel burning or UL127 factory-built fire place constructed of noncombustible 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.
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 draft­ing properly. To check the vent for proper drafting: Light a tightly rolled newspaper on one end and place it at the inside front edge of the fireplace.
Observe the smoke and be sure the vent is properly drawing it up the chimney. If the smoke spills out into the room, extinguish the flame and remove any obstruction until proper venting is achieved.
The chimney flue damper must be fixed open to pro vide a minimum of 32 square inch of free air opening at all times during operation of the log set. A damper clamp is included to secure the damper.
The minimum flue sizes shown in Figure 3 are based on a 6' chimney height using round pipe. Your minimum flue size will vary based on input rate and chimney height. Refer to the National Fuel Gas Code 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 suitable clamp or permanent stop must be installed, or the damper blade must be cut or removed.
Damper Clamp
Damper
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Masonry
Fireplace
Figure 4 - Attaching Damper Clamp
Damper
Damper Clamp
Damper
Manufactured
Fireplace
INSTALLING REMOTE CONTROL ACCESSORY BRACKET
If installing optional remote control accessory you 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
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114924-01B
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