Desa GWN20TA, GWN30TA, GWP20TA, GWP30TA User Manual

0 (0)
UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
MODELS
GWN20TA, GWP20TA, GWN30TA, GWP30TA, WMN20A, WMP20A
WARNING: If the information in this manual is not fol-
lowed exactly, a re or explosion may result causing property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable
— 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 re department.
— Installation and service must be performed by a quali-
ed installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
Safety Information ............................................... 2
TABLE OF CONTENTS
Local Codes......................................................... 4
Product Identication ........................................... 4
Unpacking............................................................ 4
Product Features ................................................. 4
Air For Combustion And Ventilation ..................... 5
Installation ........................................................... 7
Operating Heater ............................................... 15
Inspecting Heater .............................................. 17
Cleaning and Maintenance ................................ 18
Troubleshooting ................................................. 19
Specications .................................................... 23
Service Hints ..................................................... 23
Replacement Parts ............................................ 23
Technical Service............................................... 23
Service Publications .......................................... 23
Illustrated Parts Breakdown and Parts List........ 24
Accessories ....................................................... 26
Parts Centrals .................................................... 27
Warranty Information ...........................Back Cover

SAFETY INFORMATION

WARNING: Improper in­stallation, adjustment, al-
teration, service or mainte-
nance can cause injury or property damage. Refer to
this manual for correct in-
stallation and operational procedures. For assis-
tance or additional infor-
mation consult a qualied installer, service agency or the gas supplier.
WARNING: This is an
unvented gas-red 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 is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.
This appliance may be in-
stalled in an aftermarket,*
per man entl y lo cate d, manufactured (mobile) home, where not prohib­ited by local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
WARNING: This product con-
tains 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 be fore 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 car-
bon monoxide poisoning resemble the u, 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 inuence of alcohol and those at high altitudes.
www.desatech.com
119344-01B2
SAFETY INFORMATION
Continued
Natural and Propane/LP Gas: Natural and pro-
pane/LP gases are fuel gases. Fuel gases are odorless. An odor-making agent is added to fuel gases. The odor helps you detect a fuel gas leak. However, the odor added to fuel gas can fade. Fuel 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 trafc and away from furniture and draperies.
Do not place clothing or other ammable 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 chil-
dren when they are in the same
room with heater.
Make sure grill guard is in place before running heater.
Keep the appliance area clear and free from combustible ma­terials, gasoline and other am­mable 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. Do not place propane/LP supply tank(s) inside 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 neighbor ’s phone. Follow the gas supplier’s instructions
• if you cannot reach your gas supplier,
call the re department
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 ammable liquids or vapors are
used or stored
• under dusty conditions
9. 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.
10. Do not use heater if any part has been under water. Immediately call a qualied 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.
11. Turn off and let cool before servicing. Only a qualied service person should service and repair heater.
119344-01B 3
www.desatech.com
SAFETY INFORMATION
Continued
12. Operating heater above elevations of 4,500 feet could cause pilot outage.
13. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity.
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 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.
Batterymarch Park Quincy, MA 02269
State of Massachusetts: The installation must be made by a licensed plumber or gas tter in the Commonwealth of Mas­sachusetts.
Sellers of unvented propane or natural gas-red 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
Commonwealth of Massachusetts.

UNPACKING

1. Remove heater from carton.
2. Remove all protective packaging applied to heater for shipment.
3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.
PRODUCT
IDENTIFICATION
Heater Cabinet
Front Panel
Ignitor Button
Glass Panel
Figure 1 - Vent-Free Gas Heater
Control Knob
Grill Guard

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.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system re­quires no matches, batteries or other sources to light heater.
THERMOSTATIC HEAT CONTROL
Thermostat models have a thermostat sens­ing bulb and a control valve. This results in the greatest heater comfort. This can also result in lower gas bills.
www.desatech.com
119344-01B4
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
not be installed in a conned 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 efcient 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 ef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, replaces, 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
following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned 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 dened as construction where:
a. walls and ceilings exposed to the outside
atmosphere have a continuous water vapor retarder with a rating of one perm
-11
(6x10
kg per pa-sec-m2) or 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 oors, between wall-ceiling joints, between wall panels, at penetrations for plumbing,
electrical and gas lines and at other open-
ings.
If your home meets all of the three criteria above, 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 Fresh-Air Flow For Heater Location, page 6.
Conned and Unconned Space
The National Fuel Gas Code, ANSI Z223.1/ NFPA 54 denes a conned 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 unconned 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 un­conned space.
* Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.
119344-01B 5
www.desatech.com
AIR FOR COMBUSTION
AND VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Conned or Unconned Space
Use this work sheet to determine if you have a conned or unconned 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: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (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 = (Maximum
Btu/Hr the space can support)
Example: 2560 cu. ft. (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 ____________ Btu/Hr Gas water heater* ____________ Btu/Hr Gas furnace ____________ Btu/Hr Vented gas heater ____________ Btu/Hr Gas replace logs ____________ Btu/Hr
Other gas appliances*
Total = ___________ Btu/Hr * Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the outdoors and vents to the outdoors.
Example:
Gas water heater ____________ Btu/Hr Vent-free heater + ___________ Btu/Hr Total = ___________ Btu/Hr
+ ___________ Btu/Hr
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 can support) _______ Btu/Hr (actual amount 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 conned 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 unconned space, remove door to adjoin­ing room or add ventilation grills between rooms. See Ventilati on Air From Inside Building, page 7.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 7.
C. Install a lower Btu/Hr heater, if lower Btu/Hr
size makes room unconned.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconned space. You will need no additional fresh air ventilation.
WARNING: If the area in
which the heater may be oper­ated is smaller than that dened as an unconned 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.
www.desatech.com
119344-01B6
Or
Remove Door into Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills into Adjoining
Room,
Option 1
Outlet Air
Ventilated Attic
Outlet A
ir
Inlet Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION
AND VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconned space. When ventilating to an adjoining unconned space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the oor 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, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Com­bustion and Ventilation for required size of
ventilation grills or ducts.
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 pri­mary 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.
WARNING: A qualied ser­vice person must install heater. Follow all local codes.
Figure 2 - Ventilation Air from Inside
Building
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 oor. 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 thermo­stat-controlled power vent. Heated air entering the attic will activate the power vent.
119344-01B 7
www.desatech.com
CHECK GAS TYPE
Use only the correct type of gas (natural or propane/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.
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.
WARNING: This appliance is equipped for natural or pro­pane/LP gas. Field conversion is not permitted.
INSTALLATION
Minimum From Sides Of Heater
36"
2"
FLOOR
CEILING
Minimum
Minimum To Top Surface Of Carpeting, Tile Or Other Combustible Material
Left Side
Right Side
6"
Continued
INSTALLATION ITEMS
Before installing heater, make sure you have the items listed below.
• for propane/LP gas, external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• ground joint union
• sediment trap
• tee joint
• pipe wrench
• for natural gas, test gauge connection*
* A CSA design-certied equipment shutoff valve with 1/8" NPT tap is an acceptable alter­native to test gauge connection. The optional CSA design-certied equipment shutoff valve can be purchased from your dealer. See Ac- cessories, page 26.
LOCATING HEATER
This heater is designed to be mounted on a wall.
WARNING: Maintain the
minimum clearances shown
in Figure 4. If you can, provide greater clearances from oor, ceiling and joining wall.
You can locate heater on oor, away from a wall. An optional oor mounting stand is need­ed. Purchase the oor mounting stand from your dealer. See Accessories, page 26.
WARNING: Never install the
heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing or other ammable objects are less than 36" from the front, top or sides of the
heater
• as a replace insert
• in high trafc areas
• in windy or drafty areas
CAUTION: This heater cre-
ates warm air currents. These
currents move heat to wall sur-
faces 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 u­ids, 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 benecial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Combustion and Ventila- tion, page 5. If high humidity is experienced, a dehumidier may be used to help lower the water vapor content in the air.
CAUTION: If you install the
heater in a home garage
• heater pilot and burner must be at least 18" above oor
• locate heater where moving
vehicle will not hit it
For convenience and efciency, install heater
• where there is easy access for operation, inspection and service
• in coldest part of room
An optional fan kit is available from your dealer. See Accessories, page 26. If planning to use fan, locate heater near an electrical outlet.
Figure 4 - Mounting Clearances As
Viewed From Front of Heater
www.desatech.com
119344-01B8
INSTALLATION
Continued
THERMOSTAT SENSING BULB
(Thermostat Models Only)
The thermostat sensing bulb has been placed below the heater.
1. Place clamp on thermostat sensing bulb as shown in Figure 5. Clamp is provided in hardware package.
2. Snap clamp into upper mounting hole as shown in Figure 5. Mounting hole is located on lower left edge on back of heater. Make sure the thermostat sensing bulb is point­ing up.
Clamp
Thermostat Sensing Bulb
Figure 5 - Attaching Thermostat Sensing
Bulb
INSTALLING HEATER TO WALL
Mounting Bracket
Locate mounting bracket in heater carton. Re­move mounting bracket from heater carton.
Figure 6 - Mounting Bracket
Removing Front Panel Of Heater
1. Remove the four painted screws, two on each side of front panel.
2. Pull bottom of front panel forward, then out.
3. Remove any remaining packaging ma­terials.
Front Panel
Figure 7 - Removing Front Panel Of
Heater
Methods For Attaching Mounting Bracket
To Wall
Only use last hole on each end of mounting bracket to attach bracket to wall. These two holes are 14" apart from their centers. Attach mounting bracket 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 through mounting bracket and into wall studs.
Attaching to Wall Anchor: This method allows
you to attach mounting bracket to hollow walls (wall areas between studs) or to solid walls (concrete or masonry).
Decide which method better suits your needs. Either method will provide a secure hold for the mounting bracket.
Marking Screw Locations
1. Tape mounting bracket to wall where heater will be located. Make sure mount­ing bracket is level.
Screw
WARNING: Maintain mini-
mum clearances shown in Figure 8, page 10. If you can, provide greater clearances from oor and joining wall.
119344-01B 9
www.desatech.com
Loading...
+ 19 hidden pages