Desa GWP20TB, HdB30NT, HdB30PT, HdB20NT, GWN30TB User Manual

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Desa GWP20TB, HdB30NT, HdB30PT, HdB20NT, GWN30TB User Manual

UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER SAFETY INFORMATION AND INSTALLATION MANUAL

Models

GWN20TB, GWP20TB, GWN30TB, GWP30TB, HDB20NT, HDB20PT,

HDB30NT, HDB30PT, MN20T, MP20T, MN30T, MP30T,

VN20BTB, VP20BTB, VN30BTB, VP30BTB WMN20a, WMP20a

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.

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

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

Installationandservicemustbeperformedbyaqualified installer, service agency or the gas supplier.

INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.

For more information, visit www.desatech.com

Table of Contents

Safety...................................................................

2

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

19

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

4

Specifications.....................................................

23

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

4

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

23

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

4

Parts...................................................................

24

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

4

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

26

Air For Combustion And Ventilation.....................

5

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

26

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

7

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

26

Operation...........................................................

15

Service Publications...........................................

26

Inspecting Heater...............................................

17

Parts Central......................................................

27

Cleaning and Maintenance................................

18

 

 

Safety

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,serviceagencyor the gas supplier.

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

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

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

WARNING: This is an unvented gas-fired heater. Itusesair(oxygen)fromthe roominwhichitisinstalled. Provisions for adequate combustion and ventilation air must be provided.

RefertoAirforCombustion 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.

IMPORTANT: Read this owner’s manual carefully and completely beforetryingtoassemble,operate or service this heater. Improper use of this heater can cause seriousinjuryordeathfromburns,fire, explosion, electrical shock and carbon monoxide poisoning.

DANGER:Carbonmonoxide

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.

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Safety

Continued

Natural and Propane/LP Gas: Natural and propane/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 insertorotheraccessorynotapproved for use with this heater.

Due to high temperatures, the applianceshouldbelocatedout oftrafficandawayfromfurniture and draperies.

Do not place clothing or other flammable material on or near the appliance. Never place any objects on the 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 shutdown. Allow surface to cool before touching.

Carefully supervise young children 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 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.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 fire department

5.This heater needs fresh, outside air ventilationtorunproperly.ThisheaterhasanOxygenDepletionSensing(ODS)safetyshutoff 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.Before using furniture polish, wax, carpet cleanerorsimilarproducts,turnheateroff.If heated,thevaporsfromtheseproductsmay createawhitepowderresiduewithinburner box or on adjacent walls or furniture.

10.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.

11.Turn off and let cool before servicing. Only a qualified service person should service and repair heater.

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3

SAFETY

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 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

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 return to dealer where you bought heater or call DESA Heating, LLC at 1-866-672-6040.

Product

Identification

Heater

Control Knob

 

Cabinet Ignitor Button

 

Grill Guard

Glass Panel

Front Panel

Figure 1 - Vent-Free Gas Heater (actual heater may vary from illustration)

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

Some models are equipped with a piezo ignitor that requires no matches, batteries or other sources to light heater.

Other heaters are equipped with an 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 greatest heater comfort. This can also result in lower gas bills.

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Air For Combustion And Ventilation

WARNING: This heater shall not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicablelocalcodes.Readthe 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 fuel-burning appliances.

PROVIDING ADEQUATE VENTILATION

The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, 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 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 outside atmosphere have a continuous water vapor retarder with a rating of one perm (6x10-11 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 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 Ventilation Air From Outdoors, page 7.

If your home does not meet all of the three criteria above, proceed to Determining FreshAir Flow For Heater Location, page 6.

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/hr (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/hr (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.

* Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.

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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: 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 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.

Example:

 

 

 

Gas water heater

_

40,000

Btu/Hr

Vent-free heater

+_

20,000

Btu/Hr

Total

=_

60,000

Btu/Hr

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 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 adjoining room or add ventilation grills between rooms. See Ventilation 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 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.

WARNING:Iftheareainwhich theheatermaybeoperateddoes notmeettherequiredvolumefor indoorcombustionair,combustion and ventilation air shall be provided by one of the methods described in the National Fuel GasCode,ANSIZ223.1/NFPA54, the International Fuel Gas Code, or applicable local codes.

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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, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

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, ANSI Z223.1/NFPA 54, 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 thermo- stat-controlled power vent. Heated air entering the attic will activate the power vent.

 

12"

 

Ventilation Grills

Ventilation

Into Adjoining Room,

Option 2

Grills into

Or

Adjoining

Remove

Room,

Door into

Option 1

Adjoining

 

Room,

 

Option 3

 

12"

Figure 2 - Ventilation Air from Inside Building

 

Outlet

Ventilated

 

Attic

 

Air

 

 

Outlet

 

 

Air

 

To Attic

 

 

 

 

To

 

 

Crawl

Inlet

 

Space

 

 

Air

 

 

 

Inlet Air

Ventilated

 

Crawl Space

 

 

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 centralheatingsystem,youmay run system’s circulating blower whileusingheater.Thiswillhelp circulatetheheatthroughoutthe 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.

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.

WARNING:Thisapplianceis equipped for either natural gas or propane/LP gas but not both. Gas type is indicated on the ratingplate.Fieldconversionisnot permitted.

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INSTALLATION

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*

hardware packet (included)

- wall anchor (4)

095112-02

- red key (1)

095116-01

- pan head screw, black (4)

097403-02

- nylon spacer (2)

099064-02

- clamp (1)

099123-01

-Phillips head screw, silver (4) 100159-02 * A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. The optional CSAdesign-certified equipment shutoff valve can be purchased from your dealer.

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 floor, ceiling and joining wall.

You can locate heater on floor, away from a wall. An optional floor mounting stand is needed. Purchase the floor mounting stand from your dealer. See Accessories, page 26, if stand is not included with your heater.

WARNING: Never install the heater

in a bedroom or bathroom

in a recreational vehicle

wherecurtains,furniture,clothingorotherflammableobjects arelessthan36"fromthefront, top or sides of heater

as a fireplace insert

in high traffic areas

in windy or drafty areas

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

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 humidity is experienced, a dehumidifier 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 floor

locate heater where moving vehicle will not hit it

For convenience and efficiency, install heater

where there is easy access for operation, inspection and service

in coldest part of room

If not included with your heater, an optional fan kit is available from your dealer. See Accessories, page 26. If planning to use fan, locate heater near an electrical outlet (see page 16).

 

CEILING

 

6"

 

36"

Minimum

 

Minimum

From

 

 

Sides Of

 

 

Heater

 

 

 

Right

 

Side

Left

 

 

Side

 

 

 

 

Minimum To

 

 

Top Surface

 

2"

Of Carpeting,

36"

Tile Or Other

 

Combustible

(91.5 cm)

FLOOR

Material

Figure 4 - Mounting Clearances As

Viewed From Front of Heater

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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 showninFigure5.Mountingholeislocated 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

Screw

 

Figure 7 - Removing Front Panel Of Heater (actual heater may vary from illustration)

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.

WARNING: Maintain minimumclearancesshowninFigure

8, page 10. If you can, ­provide greater clearances from floor and joining wall.

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INSTALLATION

Continued

2.Mark screw locations on wall (see Figure 8).

Note: Only mark last hole on each end of mounting bracket. Insert mounting screws through these holes only.

3.Remove tape and mounting bracket from wall.

12"

14"

 

Min.

 

AdjoiningWall

Only Insert Mounting

19 3/4"

Screws Through Last

 

Hole On Each End

Min.

 

 

Floor

Attaching To Wall Anchor Method

For attaching mounting bracket to hollow walls (wall areas between studs) or solid walls (concrete or masonry)

1.Drill holes at marked locations using 5/16" drill bit. For solid walls (concrete or masonry), drill at least 1" deep.

2.Fold wall anchor as shown in Figure 9.

3.Insert wall anchor (wings first) into hole. Tap anchor flush to wall.

4.For thin walls (1/2" or less), insert red key intowallanchor.Pushredkeyto“pop”open anchor wings. IMPORTANT: Do not hammer key! For thick walls (over 1/2" thick) or solid walls, do not pop open wings.

5.Place mounting bracket onto wall. Line up last hole on each end of bracket with wall anchors.

20,000 Btu/Hr Models

16"

14"

Min.

 

WallAdjoining

Only Insert Mounting

19 3/4"

Screws Through Last

Min.

 

Hole On Each End

 

 

Floor

30,000 Btu/Hr Models

Figure 8 - Mounting Bracket Clearances

Attaching Mounting Bracket To Wall

Note: Wall anchors, mounting screws and spacers are in hardware package. The hardware package is provided with heater.

Attaching To Wall Stud Method

For attaching mounting bracket to wall studs

1.Drill holes at marked locations using 9/64" drill bit.

2.Place mounting bracket onto wall. Line up last hole on each end of bracket with holes drilled in wall.

3.Insert mounting screws through bracket and into wall studs.

4.Tighten screws until mounting bracket is

firmly fastened to wall studs.

6.Insert mounting screws through bracket and into wall anchors.

7.Tighten screws until mounting bracket is firmly fastened to wall.

Figure 9 - Folding

Figure 10 - Popping

Anchor

Open Anchor Wings

 

For Thin Walls

Placing Heater On Mounting Bracket

1.Locate two horizontal slots on back panel of heater.

2.Place heater onto mounting bracket. Slide horizontal slots onto stand-out tabs on mounting bracket.

Horizontal Slots

Stand-

Out Tab

Mounting Bracket (attached to wall)

Figure 11 - Mounting Heater Onto

Mounting Bracket

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INSTALLATION

Continued

Installing Bottom Mounting Screws

1.Locate two bottom mounting holes. These holes are near bottom on back panel of heater (see Figure 12).

2.Mark screw locations on wall.

3.Remove heater from mounting bracket.

4.If installing bottom mounting screws into hollow or solid wall, install wall anchors. Follow steps 1 through 4 under Attaching To Wall Anchor Method, page 10.

If installing bottom mounting screw into wall stud, drill holes at marked locations using 9/64" drill bit.

5.Replace heater onto mounting bracket.

6.Place spacers between bottom mounting holes and wall anchor or drilled hole.

7.Hold spacer in place with one hand. With other hand, insert mounting screw through bottom mounting hole and spacer. Place tip of screw in opening of wall anchor or drilled hole.

8.Tighten both screws until heater is firmly secured to wall. Do not over tighten.

Note: Do not replace front panel at this time. Replace front panel after making gas connections and checking for leaks (see pages 12 through 14).

Mounting heater to floor

With optional floor kit

Mounting Base Feet to Heater

Note: A 90° elbow is required for mounting this unit and must be installed BEFORE base feet to provide proper clearance (see Figure 15).

1.Lay heater cabinet on its back on a table with the heater bottom overhanging table edge.

2.Apply pipe joint sealant lightly to male NPT threads of elbow. Hold pressure regulator with a wrench when connecting elbow. Do not overtighten elbow to regulator. Regulator body could be damaged.

3.Alignholesinbasefootwithmountingholes on bottom of cabinet (see Figure 13).

4.Secure base foot to heater using sheet metal screws.

5.Repeat for other side.

Wood

Screw

Front View

Heater

Wall

 

 

Spacer

Side View

Figure 12 - Installing Bottom Mounting

Screws

Base Foot Sheet Metal Screw

Figure 13 - Installing Base Feet

Mounting Base Feet to Floor

1.Remove front panel (see Removing Front Panel of Heater, page 9).

2.Position heater with base feet in desired location. Mark holes for drilling. Remove heater with base.

3.For carpeted floors, make a small cut with a sharp knife at marked locations prior to drilling. If mounting base to a wood floor, drill 1/8" diameter hole, 3/4" deep. (Do not use anchors in wood floors).

If mounting base to a concrete floor, drill with 1/4" diameter concrete drill bit, 13/8" into floor. Insert anchors completely into holes.

4.Reposition heater with base feet over holes. Secure base to floor with wood screws. See Figure 13.

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INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 3/8" NPT (National PipeThread)inletconnectionto the pressure regulator.

WARNING: A qualified servicepersonmustconnectheater 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.

CAUTION: For propane/LP gas,neverconnectheaterdirectly to the propane/LP supply. This heaterrequiresanexternalregulator (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 14. Pointing the vent down protects it from freezing rain or sleet.

CAUTION:Useonlynew,black ironorsteelpipe.Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volumetoheater.Ifpipeistoosmall, 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" NPTtap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 15, page 13).

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. Excess sealant in pipe could result in clogged heater valves.

WARNING: Use pipe joint sealantthatisresistanttoliquid petroleum (LP) gas.

Install sediment trap in supply line as shown in Figure 15, page 13. 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.

Propane/LP

External

Supply Tank

Regulator

 

 

With Vent

 

Pointing

 

Down

Figure 14 - External Regulator With Vent

Pointing Down

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INSTALLATION

Continued

IMPORTANT: Hold the pressure regulator 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.

 

Pressure

 

Heater

 

Regulator

 

 

 

Cabinet

 

 

 

 

 

3/8" NPT

 

 

 

Pipe Nipple

 

 

Connection*

Bushing to

Ground Joint

Union

 

Tee Joint

 

Equipment

 

Reducer

 

Shutoff

 

 

 

Gauge

1/8" NPT

Valve*

 

 

1/8" NPT

 

 

 

 

 

Test

Plug Tap

 

Natural Gas

Trap

 

3"

Tee Joint

From Gas

 

 

Min.

Meter

 

 

Pipe

 

Sediment

 

(4" W.C. to

 

Nipple

10.5" W.C. Pressure)

 

 

 

 

Cap

 

Propane/LP

 

 

 

From External Regulator

 

 

 

(11" W.C. to 14" W.C.

 

 

 

 

Pressure)

Refer to connector's instructions

Flexline

 

See

3/8" NPT/

illustration

above for

1/2" Flare

detail

90° Elbow

 

Connection Using Flexline

Figure 15 - 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.

CHECKING GAS CONNECTIONS

WARNING:Testallgaspiping 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.

Applyanoncorrosiveleakdetection 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 Connecting to Gas Supply, page 12.

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.

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.

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13

INSTALLATION

Continued

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 16).

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 (see Figure 17) or propane/LP supply tank for propane/LP gas, to equipment shutoff valve (see Figure 18). 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 16).

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 17 or 18). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light heater (see Operation, page 15). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 16).

8.Replace front panel.

Thermostat Gas Valve

Gas

Meter

Equipment Shutoff Valve

Figure 17 - Checking Gas Joints for Natural Gas (actual heater may vary from illustration)

Thermostat Gas Valve

Propane/LP

Supply Tank

Equipment Shutoff Valve

Figure 18 - Checking Gas Joints for Propane/LP Gas (actual heater may vary from illustration)

Equipment

Open

 

Shutoff Valve

 

 

Closed

Figure 16 - Equipment Shutoff Valve

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124002-01C

Operation

FOR YOUR SAFETY READ

BEFORE LIGHTING

WARNING: If you do not follow these instructions exactly, a fire or explosion­ may result causing property damage, personal injury or loss of life.

A.This appliance has a pilot which must belightedbyhand.Whenlightingthepilot, 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 neighbor’s phone. Follow the gas supplier’s 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,don’ttrytorepairit,callaqualified service technician. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately call aqualifiedservicetechniciantoinspect 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 above.

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 to the 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 above. If you don’t smell gas, go to the next step.

6.Thermostat Models: Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds.

Manual Models: Press in and turn control knobcounterclockwisetothePILOT position. Keep control knob pressed in 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.

Ifneeded,keeppressingignitorbuttonuntil pilot lights. If ignitor does not light pilot, refer to Troubleshooting,page19orcontacta 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 16.

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.

Note: If pilot goes out, repeat steps 4 thru 7. Wait one (1) minute before lighting pilot again.

9.Turn control knob counterclockwise to desired heating level. The main burner should light. Manual control heaters should be used in locked positions.

10.To shut off burner only and leave pilot lit, turn control knob clockwise to the PILOT position.

Figure 19 - Control Knob In The OFF

Position Manual Control Models

F

F

O

Figure 20 - Control Knob In The OFF

Position Thermostat Models

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Operation

Continued

WARNING: Always operate manual control heaters at the locked positions. Operation between these positions may create a possible health hazard if used in a poorly ventilated room. Read owner’s manual for complete instructions.

CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.

Thermocouple

Ignitor Electrode

Pilot Burner

Figure 21 - Pilot (actual pilot may vary)

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1.Turn control knob clockwise to the OFF position.

2.Turn off all electric power to the appliance if service is to be performed.

3.Close equipment shutoff valve (see Figure 16, page 14).

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.The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. 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. Selecting the 5 setting will cause the burner to remain fully on without modulating down in most cases.

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation location, room size, open air temperatures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1.Remove front panel (see Figure 7, page 9).

2.Follow steps 1 through 7 under Lighting Instructions, page 15.

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 15.

5.Replace front panel.

Blower

Operation

WARNING:Bloweraccessory mustbegrounded.Blowercomes with a three-prong, grounding plug as shown in Figure 22. The plug is your protection against electrical shock. Plug it into a standard, three-hole, grounded, outlet. If cord needs replacing, use only a cord with a threeprong, grounding plug.

CAUTION: Label all wires prior to disconnection when servicingcontrols.Wiringerrors cancauseimproperanddangerous operation.

CAUTION:Donotplugpower cord into electrical outlet until installation is complete.

Grounded

Outlet

Figure 22 - Grounding Plug

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Operation

Continued

Extension Cord

Use extension cord if needed. The cord must have a three-prong, grounding plug and a three-hole receptacle. Make sure cord is in good shape. It must be heavy enough to carry the current needed. An undersized cord will cause a drop in line voltage. This will result in loss of power and overheating. Use a No. 16 AWG cord for lengths less than 50 feet.

CAUTION: Verify proper operation after servicing.

Operating Blower

Theblowerisconnectedtoathermostat.When unit heats up, the blower will operate. A few

minutes after unit cycles off or is turned off, blower will shut off. Blower will cycle on and off in this manner. Note: If you have a heater with a thermostat, the heater and blower will not turn off and on at exactly the same time. Blower cycle times will vary with heat setting selected.

 

Thermostat

 

Sensor

 

Switch

110/115

Blower

V.A.C.

Motor

Black

Black

Green

 

White

White

 

Green

Figure 23 - Wiring Diagram For Blower

Accessory

Inspecting Heater

Check pilot flame pattern and burner flame pattern often.

PILOT FLAME PATTERN

Figure 24 shows a correct pilot flame pattern. Figure 25 shows an incorrect pilot flame pattern. The incorrect 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 25

turn heater off (see To Turn Off Gas to Appliance, page 16)

see Troubleshooting, page 19

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.

Blue Flame

Pilot Burner

Thermocouple

Figure 24 - Correct Pilot Flame Pattern

Yellow Flame

Thermocouple

Pilot Burner

 

Figure 25 - Incorrect Pilot Flame Pattern

BURNER FLAME PATTERN

WARNING: If yellow tipping occurs, your heater could produceincreasedlevelsofcarbon monoxide.

NOTICE:Donotmistakeorange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame.

Figure26showsacorrectburnerflamepattern. Figure 27 shows an incorrect burner flame pattern.The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the glass panel height.

If burner flame pattern is incorrect, as shown in Figure 27

turn heater off (see To Turn Off Gas To Appliance, page 16)

see Troubleshooting, page 19

Blue

Flame

1/2 Glass

Height

Figure 26 - Correct Burner Flame Pattern

Yellow

Tipping

1/2 Glass

Height

Figure 27 - Incorrect Burner Flame Pattern

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17

Cleaning and Maintenance

WARNING: Turn off heater and let cool before cleaning.

CAUTION: You must keep control areas, burner and circulatingairpassageways­ ofheater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualifiedserviceperson.Heater may need more frequent cleaning due to excessive lint from carpeting,beddingmaterial,pet hair, etc.

WARNING: Failure to keep the primary air opening(s) of theburner(s)cleanmayresultin sooting and property damage.

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. 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. If using compressed air in a can, please follow the directions on the can. If you don’t follow directions on the can, you could damage the pilot assembly.

1.Shut off unit, including pilot.Allow the unit to cool for at least thirty minutes.

2.Inspect burner, pilot for dust and dirt.

3.Blow air through 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 assembly. There is a small pilot air inlet about 2" from where the pilot flame comes out of the pilot assembly (see Figure 28). With the unit 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 28 - Pilot Inlet Air

(Propane/LP Pilot Shown)

CABINET

Air Passageways

Use 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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