Desa LSF20PT, SF20PT, LSF20NT, REM20PT, SF30NT User Manual

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UNVENTED (VENT-FREE) SOLAR FUSION GAS HEATER SAFETY INFORMATION AND INSTALLATION MANUAL
RESIDENTIAL MODELS
SF20NT, SF20PT,
LSF20NT, LSF20PT,
VSF20NT, VSF20PT,
SF30NT, SF30PT, LSF30NT, LSF30PT, VSF30NT, VSF30PT
GARAGE MODELS
LSFG20NT, LSFG20PT,
REM20NT, REM20PT,
SFG20NT, SFG20PT, SPC20NT, SPC20PT,
VSFG20NT, VSFG20PT
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.
For more information, visit www.desatech.com
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 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 5 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
State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for bedroom and bathroom installation in the Common wealth of Massachusetts.
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TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Product Identification ........................................... 4
Unpacking ........................................................... 4
Product Features ................................................. 4
Air For Combustion and Ventilation .....................
Installation ........................................................... 7
Operating Heater ............................................... 12
Inspecting Heater .............................................. 14
Cleaning and Maintenance ................................ 15
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Troubleshooting .................................................
Technical Service .............................................. 19
Service Publications .......................................... 19
Service Hints ..................................................... 19
Specifications ....................................................
5
Accessories ....................................................... 21
Replacement Parts ............................................ 21
Parts Central ..................................................... 21
Illustrated Parts Breakdown and Parts List ....... 22
Warranty Information .........................................
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20
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116307-01B

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.
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 head aches, 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 influ ence of alcohol and those at high altitudes.
Natural and Propane/LP Gas: Natural and Propane/
LP gases are odorless. An odor-making agent is added to these gases. 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 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.
Surface of heater 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 shut down. Allow surface to cool before touching.
Carefully supervise young chil­dren when they are in the same room with heater.
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Make sure grill guard is in place before running heater.
Keep the appliance area clear
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and free from combustible ma terials, 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 ap pliance is not convertible for use with other gases.
2. Do not place propane/LP supply tank(s) in side any structure. Locate propane/LP supply tank(s) outdoors.
3. This heater shall not be installed in a bedroom or bathroom.
4. 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
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3116307-01B
SAFETY INFORMATION
Continued
5. 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, page 5.
6. Keep all air openings in front and bottom of heater clear and free of debris. This will insure enough air for proper combustion.
7. If heater shuts off, do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced.
8. Do not run heater
• where flammable liquids or vapors are used
or stored
• under dusty conditions
9. Do not use heater if any part has been 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.
10. Turn off and unplug (if using electricity) heater and let cool before servicing. Only a qualified service person should service and repair heater.
11. Operating heater above elevations of 4,500 feet (1,371 m) could cause pilot outage.
12.
To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. (45 kg) capacity.
13. 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.
14. Provide adequate clearances around air openings.

LOCAL CODES

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, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
National Fire Protection Association, Inc.
1430 Broadway
New York, NY 10018
Batterymarch Park Quincy, MA 02269
PRODUCT
IDENTIFICATION
Grill Guard
Front Panel
Figure 1 - Vent-Free Gas Heater
Control Knob & Ignitor Button (inside door)

UNPACKING

1. Remove heater, front panel and grill from carton. Set aside in a safe location.
2. Carefully remove refractory from heater and remove packing material. Check refractory for any damage. If the refractory is damaged do not use. See Replacement Parts, page 21. Set aside in a safe location.
3. Check heater for any damage. If heater is dam aged, promptly return to where you bought heater.

PRODUCT FEATURES

SAFETY DEVICE
This heater has a pilot with an Oxygen Deple­tion Sensing (ODS) safety shutoff system. The ODS/pilot is a required feature for vent-free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.
IGNITION SYSTEM
This heater has either a piezo ignitor or electronic ignitor to light heater fuel supply.
THERMOSTATIC HEAT CONTROL
Thermostat models have a thermostat sensing bulb and a control valve. This results in the great est heater comfort. This can also result in lower gas bills.
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116307-01B
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.
Todayʼs 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 effi cient, 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 fuel-burning appliances.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three fol lowing ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space The information on pages 5 through 7 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 out
side atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10 less with openings gasketed or sealed and
b. weather stripping has been added on
openable windows and doors and
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 these three cri teria, you must provide additional fresh air. See Ventilation Air From Outdoors, page 7.
If your home does not meet all of the three criteria above, proceed to Determining
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Fresh-Air Flow For Heater Location. Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m 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
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(4.8 m
per kw) of the aggregate input rating of all appliances installed in that space. Rooms com municating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.
­* Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.
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kg per pa-sec-m2) or
3
per kw) of the aggregate input
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.
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5116307-01B
Or Remove Door into Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option
2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
AIR FOR COMBUSTION
AND VENTILATION
Continued
1. Determine the volume of the space (length x width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (6.1 m) (length) x
16 ft. (4.88 m) (width) x 8 ft. (2.44 m) (ceiling height) = 2560 cu. ft. (volume of space)
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. Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.
__________ (volume of space) x 20 = (Maxi-
mum Btu/Hr the space can support) Example: 2560 cu. ft. (72.4 m3) (volume of space) x 20
= 51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater _____________ Gas water heater* _____________ Gas furnace _____________ Vented gas heater _____________ Gas fireplace logs _____________ Other gas appliances* + ____________ Total = ____________ * Do not include direct-vent gas appliances. Di
rect-vent draws combustion air from the outdoors and vents to the outdoors.
Example:
Gas water heater _____________ Vent-free heater + ____________ Total = ____________
40,000 20,000 60,000
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: 51,200 Btu/Hr (maximum the space
can support)
60,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the above example is a confined space because the actual Btu/Hr used is more than the maxi mum 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 adjoin
ing room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation
Air From Inside Building.
B. Vent room directly to the outdoors. See Ventila
tion Air From Outdoors, page 7.
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Btu/Hr Btu/Hr Btu/Hr Btu/Hr Btu/Hr Btu/Hr Btu/Hr
Btu/Hr Btu/Hr Btu/Hr
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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 un-
confined space. You will need no additional fresh air ventilation.
WARNING: If the area in which the heater may be oper ated 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 National Fuel Gas Code, ANSI Z223.1/NFPA 54 Section 5.3 or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un confined space. When ventilating to an adjoining unconfined space, you must provide two perma­nent openings: one within 12" (30.4 cm) of the ceiling and one within 12" (30.4 cm) of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2). You can also remove door into
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adjoining room (see option 3, Figure 2). Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
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Figure 2 - Ventilation Air from Inside
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Building
116307-01B
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AIR FOR COMBUSTION
Outlet Air
Ventilated Attic
Outlet
A
ir
Inlet Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
AND VENTILATION
Continued
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent open ings: one within 12" (30.4 cm) of the ceiling and one within 12" (30.4 cm) 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, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of
ventilation grills or ducts. IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat­controlled power vent. Heated air entering the attic will activate the power vent.
Figure 3 - Ventilation Air from Outdoors

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 pri mary heat source. If you have a central heating system, you may run system’s 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.
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WARNING: A qualified ser­vice person must install heater. Follow all local codes.
CHECK GAS TYPE
­Use only the correct type of gas (natural or pro-
pane/LP). If your gas supply is not the correct gas type, do not install heater. Call dealer where you bought heater for proper type heater.
WARNING: This appliance is equipped for (natural or pro­pane/LP) gas. Field conversion is not permitted.
INSTALLATION ITEMS
Before installing heater, make sure you have the items listed below.
• for propane/LP gas, external regulator (supplied by installer)
• piping from gas supply (check local codes)
• flex gas tubing
• sealant (resistant to propane/LP gas)
• equipment shutoff valve*
• flex gas line with 3/8" NPT tap
• ground joint union
• sediment trap
• tee joint
• pipe wrench
• for natural gas, test gauge connection*
* A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. The optional CSA design­certified equipment shutoff valve can be purchased from your dealer. See
Accessories, page 21.
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7116307-01B
INSTALLATION
Minimum From Sides Of Heater
36" (91.4 cm)
14" (35.6 cm) minimum
FLOOR
CEILING
Minimum
Residential Heaters:
2" Minimum To Top Surface Of Carpeting, Tile Or Other Combustible Material
Garage Heaters:
18" Minimum To Garage Floor
Left Side
Right Side
6" (15.2 cm)
Continued
LOCATING HEATER
WARNING: Maintain the minimum clearances shown in Figure 4. If you can, provide greater clearances from floor, ceiling and joining wall.
WARNING: Never install the heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture, cloth
ing or other flammable objects are less than 36" from the front, top or sides of the heater
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas
CAUTION: If you install the heater in a home garage
• heater pilot and burner must be
at least 18" above floor
• locate heater where moving
vehicle will not hit it
For convenience and efficiency, install heater
• where there is easy access for operation, inspec tion and service
• in coldest part of room
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Figure 4 - Mounting Clearances As
Viewed From Front of Heater
THERMOSTAT SENSING BULB
The thermostat sensing bulb is located on the lower rear panel of heater.
1. Place clamp on thermostat sensing bulb as
shown in Figure 5. Clamp is provided in hardware package.
2. Snap clamp into mounting hole as shown in
Figure 5. Mounting hole is located in the center of lower back panel of heater. Make sure the thermostat sensing bulb is horizontal.
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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, 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.
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 Combustion and Ventilation, page 5. If high humid ity is experienced, a dehumidifier may be used to help lower the water vapor content in the air.
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Clamp
Figure 5 - Attaching Thermostat Sensing
Bulb
Thermostat Sensing Bulb
INSTALLING HEATER TO WALL
Methods For Attaching Heater To Wall
Attach heater to wall in one of two ways:
1. Attaching to wall stud
2. Attaching to wall anchor
Attaching to Wall Stud: This method provides
the strongest hold. Insert mounting screws into wall studs.
Attaching to Wall Anchor: This method allows you
­to attach mounting screws to hollow walls (wall
areas between studs) or to solid walls (concrete or masonry).
116307-01B
INSTALLATION
18 3/4"
Min.
7"
Min.
9"
Min.
20,000 Btu Heaters
16 7/8"
30,000 Btu Heaters
24 5/16"
Ad j o ini n g Wa l l
Insert
Mounting
Screws
Floor
Continued
Decide which method better suits your needs. Either method will provide a secure hold for the heater.
Marking Screw Locations
5. Insert mounting screws into wall anchors.
6. Tighten screws until screw head is 1/8" away
from wall.
WARNING: Maintain mini­mum clearances shown in Figure 4. If you can, provide greater clearances from floor and joining wall.
Mark three screw locations on wall as shown in Figure 6).
Figure 6 - Wall Mounting Clearances
Locate hardware packet behind left side door of heater.
Attaching To Wall Stud Method
For attaching heater to wall studs
1. Drill holes at marked locations using 9/64" drill bit. Holes must be level to prevent com plications with front panel.
2. Tighten screws until screw head is 1/8" away from wall.
Attaching To Wall Anchor Method
For attaching heater to hollow walls (wall areas be tween studs) or solid walls (concrete or masonry).
1. Drill holes at marked locations using 5/16" drill bit. Holes must be level to prevent com plications with front panel. For solid walls (concrete or masonry), drill at least 1" deep.
2. Fold wall anchor as shown in Figure 7.
3. Insert wall anchor (wings first) into hole. Tap
4. For thin walls (1/2" or less), insert red key
anchor flush to wall.
into wall anchor. Push red key to “pop” open anchor wings. IMPORTANT: key! For thick walls (over 1/2" thick) or solid walls, do not pop open wings.
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Do not hammer
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Figure 7 - Folding
Anchor
Placing Heater On Mounting Screws
1. Locate two top vertical key slots on back end panels of heater.
2. Place heater onto mounting screws.
Figure 9 - Vertical Key Slots for Mounting
Figure 8 - Popping
Open Anchor Wings
For Thin Walls
Vertical
Key Slots
Heater to Wall
CONNECTING TO GAS SUPPLY
WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.
WARNING: A qualified service person must connect heater to gas supply. Follow all local codes.
WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.
IMPORTANT: For natural gas, check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 10.5" of wa­ter. If gas line pressure is higher, heater regulator damage could occur.
9116307-01B
INSTALLATION
Continued
CAUTION: For propane/LP gas, never connect heater di­rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.
For propane/LP gas, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install the external regulator with the vent pointing down as shown in Figure 10. Pointing the vent down protects it from freezing rain or sleet.
CAUTION: Use only new, black iron or steel pipe. Inter­nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.
Typical Inlet Pipe Diameters
20,000 Btu/Hr Models - 3/8" or greater 30,000 Btu/Hr Models - 1/2" or greater
Installation must include equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 11).
Propane/LP Supply Tank
Figure 10 - External Regulator With Vent
Pointing Down
10
External Regulator
Vent Pointing Down
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IMPORTANT: Install an equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Sealant in pipe could result in clogged heater valves. Most flex gas tubing does not require sealant. Read instructions supplied with flex gas tubing.
WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Rear View
Flex Gas Line
3/8" Male Flare to NPT Connector
Pipe Joint Sealant Required (NPT End)
Tee Joint
Reducer Bushing to 1/8" NPT
1/8" NPT Plug Tap
Test Gauge Connection*
Figure 11 - Gas Connection
* A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See
3/8" Male Flare to NPT Connector
Equipment Shutoff
Accessories, page 21.
Valve*
3/8" NPT Pipe Nipple
3" Min
Cap Tee Pipe Joint Nipple
Sediment Trap
Hole Provided in Rear Surround
Pipe Joint Sealant Required (NPT End)
Pressure Regulator
Natural Gas
From Gas Meter (4" W.C. to 10.5" W.C. Pressure)
Propane/LP
From External Regulator (11" W.C. to 14" W.C. Pressure)
116307-01B
INSTALLATION
Continued
Install sediment trap in supply line as shown in Figure 11, page 10. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.
Install male connector and flex gas line to equipment shutoff valve through hole provided in rear surround as shown in Figure 11, page 10.
IMPORTANT: Hold the pressure regulator and connector with wrench when connecting it to gas piping and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could be damaged.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec tion fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.
CAUTION: For propane/LP gas, make sure external regula­tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 9.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.
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2. Cap off open end of gas pipe where equipment shutoff valve was connected.
3. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.
4. Check all joints of gas supply piping system. Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 12).
2. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.
3.
Check all joints from gas meter for natural gas or propane/LP supply tank for propane/LP gas, to equipment shutoff valve (see Figure 13 or 14, page 12). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS CONNECTIONS
1. Open equipment shutoff valve (see Figure 12).
2. For natural gas open main gas valve located on or near gas meter. For propane/LP gas open propane/LP supply tank valve.
3. Make sure control knob of heater is in the OFF position.
4.
Check all joints from equipment shutoff valve to thermostat gas valve (see Figure 13 or 14, page
12). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, this page). Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli ance, page 13).
8. Install refractory and front panel.
Equipment Shutoff Valve
Figure 12 - Equipment Shutoff Valve
Open
Closed
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INSTALLATION
Continued
Gas Meter
Thermostat Gas Valve
Equipment Shutoff Valve
Refractory
Shoulder Screw
Figure 13 - Checking Gas Joints for
Propane/LP Supply Tank
Figure 14 - Checking Gas Joints for
Installing Refractory and Front Panel
Natural Gas
Thermostat Gas Valve
Equipment Shutoff Valve
Propane/LP Gas
WARNING: Examine refrac­tory panel. If damaged, do not operate heater. See Replace
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ment Parts, page 21.
1.
Gently lift refractory and position into heater. Take care not to damage refractory. Ensure refractory sits behind preforated tab. (see Figure
15). If refractory is damaged call the phone num­ber found under Replacement Parts, page 21.
CAUTION: Refractory may shift inside heater. When install­ing or removing front panel, use caution to prevent refractory from falling.
2. Install front diffuser as shown in Figure 15.
3. Install front panel of heater by placing slots on each side over and down onto shoulder screws (see Figure 15).
Front Panel
Figure 15 - Installing Front Panel and
Front Diffuser
Refractory
Preforated Tab

OPERATING HEATER

FOR YOUR SAFETY READ
BEFORE LIGHTING
WARNING: If you do not fol­low these instructions exactly, a fire or explosion may result causing property damage, per sonal injury or loss of life.
A. This appliance has a pilot which must be
lighted by hand. When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric 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.
C. Use only your hand to push in or turn the
gas control knob. Never use tools. If the knob will not push in or turn by hand, donʼt try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.
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116307-01B
O
F
F
P
I
L
O
T
OPERATING HEATER
Continued
D. Do not use this appliance if any part has
been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information starting on page 12.
2. Make sure equipment shutoff valve is fully open.
3. Turn off any electric power to the appliance if service is to be performed.
4. Turn control knob clockwise OFF position.
5. Wait five minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information starting on page 12. If you donʼt smell gas, go to the next step.
6. Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds.
7. With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of burner. Note:
You may be running this heater for the first time after hooking up to gas supply. If so, you may need to press in control knob for 30 seconds or more. This will allow air to bleed from the gas system. If needed, keep pressing ignitor button until pilot lights. If ignitor does not light pilot, refer to Troubleshooting, page 16 or contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure, page 14.
8. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.
• If control knob does not pop up when
released, contact a qualified service person or gas supplier for repairs.
to the
Note: If pilot goes out, repeat steps 4 thru 7.
Thermostat models have a safety interlock system. Wait one (1) minute before lighting pilot again.
9. Turn control knob counterclockwise to desired heating level. The main burner should light.
CAUTION: Do not try to ad­just heating levels by using the equipment shutoff valve.
Ignitor Button (Actual Ignitor may vary)
Figure 16 - Control Knob In The OFF
Position
Thermocouple
Figure 17 - Pilot
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise OFF position.
2. Turn off all electric power to the appliance if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise to the PILOT position.
Control Knob
Ignitor Electrode
Pilot Burner
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13116307-01B
OPERATING HEATER
Continued
THERMOSTAT CONTROL
OPERATION
The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between 1 and 5. This adjusts the amount of gas flow to the burner that increases or decreases the burner flame height.
Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room tem perature (depending on housing construction, installation location, room size, open air tem peratures, etc.) Frequent use of your heater will let you determine your own comfort levels.
MANUAL LIGHTING
PROCEDURE
1.
Remove front panel (see Figure 10, page 9).
2. Follow steps 1 through 7 under Lighting Instructions, page 13.
3. With control knob pressed in, strike match. Hold match to pilot until pilot lights.
4. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 9, under Lighting Instructions, page 13.
5. Replace front panel.

INSPECTING HEATER

Check pilot flame pattern and burner flame pat­tern often.
PILOT FLAME PATTERN
Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot flame pattern. The incor rect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 19
turn heater off (see To Turn Off Gas to Ap- pliance, page 13)
• see Troubleshooting, page 16 Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue and have no yellow or orange color.
Thermocouple
Figure 18 - Correct Pilot Flame Pattern
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Thermocouple
Figure 19 - Incorrect Pilot Flame Pattern
Blue Pilot Flame
Pilot Burner
Yellow Pilot Flame
Pilot Burner
BURNER FLAME PATTERN
WARNING: If yellow tipping occurs, your heater could pro­duce increased levels of carbon monoxide.
NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame.
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INSPECTING HEATER
Continued
Figure 20 shows a correct burner flame pattern. Figure 21 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame.
If burner flame pattern is incorrect, as shown in Figure 21
• turn heater off (see To Turn Off Gas to Appli ance, page 14)
• see Troubleshooting
Figure 20 - Correct Burner Flame Pattern
Figure 21 - Incorrect Burner Flame Pattern
, page 16
Blue Flame
Yellow Tipping
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep control areas, burner and circu lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent clean­ing due to excessive lint from carpeting, bedding material, pet hair, etc.
WARNING: Failure to keep the primary air opening(s) of the burner(s) clean may result in sooting and property damage.
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ODS/PILOT AND BURNER
Use a vacuum cleaner, pressurized air or small, soft bristled brush to clean.
BURNER PILOT AIR INLET
The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning flame. Keep these holes clear of dust, dirt and lint. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot.
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We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person.
We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store or home center may carry compressed air in a can. You can use a vacuum cleaner in the blow position. If using com pressed air in a can, please follow the directions on the can. If you donʼt follow directions on the can, you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes.
2. Inspect burner, pilot for dust and dirt.
3. Blow air across the ports/slots and holes in the burner.
4. Never insert objects into the pilot tube.
Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot as sembly. There is a small pilot air inlet about two inches from where the pilot flame comes out of the pilot assembly (see Figure 22). With the heater off, lightly blow air through the air inlet. You may blow through a drinking straw if compressed air is not available.
Pilot Assembly
Pilot Air Inlet
Figure 22 - Pilot Air Inlet
CABINET
Air Passageways
Use a vacuum cleaner or pressurized air to clean.
Exterior
Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust.
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