Desa VFN18R, VFN24R, VFN30R User Manual

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UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATER
VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGN-CERTIFIED AS
VENTED DECORATIVE APPLIANCES
OWNER’S OPERATION AND INSTALLATION MANUAL
VFN18R VFN24R VFN30R
18", 24", and 30"
EMBER MASTER
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.
• 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 per-
formed by a qualified installer, service agency, or the gas supplier.
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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, or in an approved ventless firebox. It is design­certified for these installations in accor­dance with ANS Z21.11.2. Exceptions: Do not install this appliance in a factory-built fireplace that includes instructions stat­ing it has not been tested or should not be used with unvented gas logs.
WARNING: This is an unvented 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
Air for Combustion and Ventilation
section on page 4 of this manual.
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
Save this manual for future reference
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER
SAFETY INFORMATION
WARNINGS
IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper­ate, or service this heater. Im­proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.
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 heater may not be working properly. Get fresh air at once! Have heater 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 Gas: Natural gas is 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 heater.
WARNING: Any change to this heater or its controls can be dangerous.
WARNING: Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner flame patterns. Ceiling fans can create drafts that alter burner flame patterns. Altered burner patterns can cause sooting.
WARNING: Do not use a blower insert, heat exchanger insert, or other accessory not ap­proved for use with this heater.
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 heater.
Heater base assembly becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater 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 heater. When using the hand­held remote accessory, keep se­lector switch in the OFF position to prevent children from turning on burners with remote.
You must operate this heater with a fireplace screen in place. Make sure fireplace screen is closed before running heater.
Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
1. 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.
2. 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 neighbor’s phone. F ollow the gas supplier’s instructions
• if you cannot reach your gas supplier,
call the fire department
3. This heater shall not be installed in a bedroom or bathroom unless installed as a vented appliance (see Installing
Damper Clamp Accessory for Vented Operation, page 10).
4. 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 damaged, operate heater with flue damper closed.
5. If fireplace has glass doors, never op­erate this heater 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 .
6. This log heater is designed to be smokeless. If logs ever appear to smoke, turn off heater and call a quali­fied service person. tial operation, slight smoking may occur due to log curing and heater burning manufacturing residues.
7. To prevent the creation of soot, follow the instructions in Cleaning and Main- tenance, page 17.
8. Before using furniture polish, wax, car­pet cleaner, or similar products, turn heater off. If heated, the vapors from these products may create a white pow­der residue within burner box or on adjacent walls or furniture.
9. This heater needs fresh, outside air ven­tilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, pages 4 through 6. If heater keeps shutting off, see Trouble- shooting, pages 18 through 20.
10. Do not run heater
• where flammable liquids or vapors
are used or stored
• under dusty conditions
11. Do not use this heater to cook food or burn paper or other objects.
12. 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 .
13. Do not operate heater if any log is bro­ken. Do not operate heater if a log is chipped (dime-sized or larger).
Note
: During ini-
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OWNER’S MANUAL
INFORMATION
Continued
14. Turn heater off and let cool before servic­ing, installing, or repairing. When using the hand-held remote accessory , make sure the selector switch is in the OFF position. Only a qualified service person should in­stall, service, or repair heater.
15. When using the hand-held remote acces­sory, make sure the selector switch is in the OFF position when you are away from home for long periods of time.
16. This heater must not be connected to any external electrical source.
17. Operating heater above elevations of 4,500 feet may cause pilot outage.
PRODUCT IDENTIFICATION
Top Middle Log
Front Logs
LOCAL CODESSAFETY
Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code, ANS Z223.1, also known as NFPA 54*.
*Available from: American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Note:
Where listed vented decorative logs are
required, thermostat operation is not permitted.
UNPACKING
CAUTION: Do not remove the metal data plates from the grate assembly. The data plates contain important product information
1. Remove logs and heater base assem­bly from carton. heater base assembly by burners. This could damage heater. Always handle base assembly by grate.
2. Remove all protective packaging ap­plied to logs and heater for shipment.
3. Check all items for any shipping dam­age. If damaged, promptly inform dealer where you bought heater.
Crossover Log
Note:
Rear Log
Rear Burner
Do not pick up
PRODUCT FEATURES
OPERATION
This heater is clean burning. It requires no outside venting. There is no heat loss out a vent or up a chimney. Heat is generated by realistic, dancing yellow flames. This heater is designed for vent-free operation with flue damper closed. It has been tested and ap­proved to ANS Z21.11.2 standard for unvented heaters. State and local codes in some areas prohibit the use of vent-free heaters. This heater may also be operated as a vented deco­rative (ANS Z21.60) product by opening the flue damper (non-thermostat operation only).
SAFETY PILOT
This heater has a pilot with an Oxygen Deple­tion Sensing (ODS) safety shutoff system. The ODS/pilot is a required feature for vent­free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system requires no matches, batteries, or other sources to light heater.
OPTIONAL REMOTE CONTROL ACCESSORIES
There are four optional remote controls that can be purchased separately for this log heater:
• wall switch
• wall thermostat
• hand-held ON/OFF remote
• hand-held thermostat remote See Accessories, page 24. The wall thermostat or hend-held thermo-
stat may not be used where vented decora­tive listing is required.
Piezo Ignitor
Front Burner
Figure 1 - Ember Master
105072
Control Knob
Bottom Middle Log
Base Assembly
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FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER
AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ven­tilation air. Read the following in­structions to insure proper fresh air for this and other fuel-burning appliances in your home.
Today’s homes are built more energy effi­cient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.
While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper com­bustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide ad­equate fresh air for these appliances. This will insure proper venting of vented fuel­burning appliances.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, NFPA 54/ANS Z223.1, Sec­tion 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space The information on pages 4 through 6 will
help you classify your space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and win­dows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.
Unusually tight construction is de­fined as construction where:
a. walls and ceilings exposed to the
outside atmosphere have a con­tinuous water vapor retarder with a rating of one perm (6x10 per pa-sec-m2) or less with open­ings gasketed or sealed
b. weather stripping has been
added on openable windows and doors
c. caulking or sealants are applied
to areas such as joints around window and door frames, be­tween sole plates and floors, be­tween wall-ceiling joints, be­tween wall panels, at penetra­tions for plumbing, electrical, and gas lines, and at other openings.
If your home meets all of the three criteria above, you must provide ad­ditional fresh air. See
From Outdoors
If your home does not meet all of the three criteria above, proceed to
termining Fresh-Air Flow for Heater Location,
and
, page 6
page 5.
Ventilation Air
.
and
-11
kg
De-
Confined and Unconfined Space
The National Fuel Gas Code, ANS Z223.1 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggre­gate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are con­sidered a part of the unconfined space.
This heater shall not be installed in a con­fined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.
* Adjoining rooms are communicating only if there are doorless passageways or ventila­tion grills between them.
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OWNER’S MANUAL
AIR FOR COMBUSTION AND VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between
the rooms.
1. Determine the volume of the space (length x width x height). Length x Width x Height = _________________ cu. ft. (volume of space)
Example:
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
_____________________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)
Example:
3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater ______________ Btu/Hr Gas water heater* ______________ Btu/Hr Gas furnace ______________ Btu/Hr Vented gas heater ______________ Btu/Hr Gas fireplace logs ______________ Btu/Hr Other gas appliances* + ______________ Btu/Hr Total = ______________ Btu/Hr * Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
_____________________Btu/Hr (maximum the space can support) _____________________Btu/Hr (actual amount of Btu/Hr used)
Example:
The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-
ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6. C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.
Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)
2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)
Example:
Gas water heater 40,000 Btu/Hr Vent-free heater + 33,000 Btu/Hr Total = 73,000 Btu/Hr
51,200 Btu/Hr (maximum the space can support) 73,000 Btu/Hr (actual amount of Btu/Hr used)
WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the
105072
National Fuel Gas Code, ANS Z223.1, Section 5.3
5
or applicable local codes
.
Continued
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER
AIR FOR COMBUSTION AND VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must pro­vide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2). You can also remove door into adjoining room (see op­tion 3, Figure 2). Follow the National Fuel
Gas Code, NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
WARNING: Rework work­sheet, adding the space of the adjoining unconfined space. The combined spaces must have enough fresh air to supply all appliances in both spaces.
Ventilation
Grills
Into Adjoining
Room,
Option 1
Figure 2 - Ventilation Air from Inside Building
Or
Remove Door into Adjoining
Room, Option
3
Outlet Air
12"
Ventilated Attic
Ventilation Grills
Into Adjoining Room,
12"
Option 2
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or ducts. You must provide two per­manent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, NFPA 54/ANS Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation
grills or ducts.
IMPORTANT:
for inlet or outlet air into attic if attic has a thermostat-controlled power vent. Heated air entering the attic will activate the power vent.
Do not provide openings
Outlet Air
Inlet Air
Inlet Air
Figure 3 - Ventilation Air from Outdoors
To Attic
To
Crawl
Space
Ventilated
Crawl Space
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105072
OWNER’S MANUAL
INSTALLATION
NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri­mary heating system. Do not in­stall this heater as your primary heat source. If you have a central heating system, you may run systems circulating blower while using heater. This will help circu­late the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.
WARNING: A qualified ser­vice person must install heater. Follow all local codes.
NOTICE: State or local codes may only allow operation of this appli­ance in a vented configuration. Check your state or local codes.
WARNING: Make sure the selector switch is in the OFF po­sition before installing heater.
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, operate heater with flue damper closed.
WARNING: Seal any fresh air vents or ash clean-out doors lo­cated on floor or wall of fireplace. If not, drafting may cause pilot outage or sooting. Use a heat­resistant sealant. Do not seal chimney flue damper.
WARNING: Never install the
heater
in a bedroom or bathroom un­less installed as a vented ap­pliance, see page 10
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 heater
in high traffic areas
in windy or drafty areas
CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces next to heater. Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as tobacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in the air exist, may discolor walls.
IMPORTANT:
Vent-free heaters add mois­ture to the air. Although this is beneficial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Com- bustion and Ventilation, pages 4 through 6.
CHECK GAS TYPE
Use only natural gas. If your gas supply is not natural gas, do not install heater. Call dealer where you bought heater for proper type heater.
INSTALLATION AND CLEARANCES (Vent-Free Operation Only)
WARNING: Maintain the mini­mum clearances. If you can, pro­vide greater clearances from floor, ceiling, and adjoining wall.
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling Floor*
LOG SIZING REQUIREMENTS
Minimum Firebox Size
Log Front Rear*
Size Height Depth Width Width
18" 17" 14" 20" 14" 24" 17" 14" 26" 18" 30" 17" 14" 32" 22"
*Measured at 14" depth
Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127-listed manufactured fireplace, or listed vent-free firebox.
Minimum Clearances For Side Combustible Material, Side Wall, and Ceiling
A. Clearances from the side of the fire-
place cabinet to any combustible ma­terial and wall should follow the dia­gram in Figure 4.
Example:
shelf, etc. is made of combustible ma­terial and protrudes 3 1/2" from the wall. This combustible material must be 4" from the side of the fireplace opening (see Figure 4).
Note:
into a manufactured firebox, follow firebox manufacturer’ s instructions for minimum clearances to combustible materials.
B. Clearances from the top of the fireplace
opening to the ceiling should not be less than 42 inches.
FIREBOX
*Minimum 16 inches from Side Wall
Figure 4 - Minimum Clearance for Combustible to Wall
The face of a mantel, book-
When installing your gas logs
121/
Example
.5 2
1 4 6 8 10 12 14 16
INCHES
101/ 8 7 51/ 31/ 1 7/8 7/16
*
4
2
3
/
4
4
2
3
/
4
INCHES
105072
18", 24", 30" 16" 42" 5"
*See
Floor Clearances,
page 9.
7
Continued
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER
INSTALLATION
Continued
NOTICE: Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fireplace opening is not needed. Go to
Clamp Accessory for Vented Op­eration
, page 10.
Minimum Noncombustible Material Clearances
If Not Using Mantel
Note:
If using a mantel, see If Using
Mantel. If not using a mantel, follow the
information below. You must have noncombustible material(s)
above the fireplace opening. Noncombus­tible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory. See Figure 5 for minimum clearances.
IMPORTANT:
minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 10.
Installing Damper
If you cannot meet these
If Using Mantel
You must have noncombustible material(s) above the fireplace opening. Noncombus­tible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombustible mate­rial must extend at least 8 inches up. If noncombustible material is less than 12", you must install the fireplace hood acces­sory. Even if noncombustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 5, and Figures 6 and 7, page 9, for minimum clearances.
Noncombustible Requirements for Material Distance (A) Safe Installation
12" or more Noncombustible material OK. Between 8" and 12" 24" or 30" Models: Install fireplace hood accessory
(HDABK or HDABR see 18" Model: Noncombustible material OK.
Less than 8" Noncombustible material must be extended to at
least 8". See cannot extend material, you must operate heater with flue damper open.
Heat Resistant Material
(A)
IMPORTANT:
minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 10.
Between 8" and 12"
If you cannot meet these
Accessories
, page 24).
, above. If you
Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace
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