Desa VN30TA, VN18TA, VN18A, VP26TA, VP26A User Manual

®

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

Model VN30A Shown

VN18A, VN18TA, VP16A, VP16TA, VP26A, VP26TA

VN30A, VN30TA, VP16ITA, VP22ITA

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 vaporsandliquidsinthevicinityofthisoranyother appliance.

—WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Donottouchanyelectricalswitch;donotuseany 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.

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 propertydamage.Refertothismanualforcorrectinstallation 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 beprovided.RefertoAirforCombustionandVentilation 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 Commonwealth of Massachusetts.

TABLE OF CONTENTS

Safety Information ...............................................	3	Troubleshooting.................................................		20
Local Codes ........................................................	4	Specifications ....................................................		23
Product Identification...........................................	4	Illustrated Parts Breakdown and Parts List .......		24
Unpacking ...........................................................	4	Replacement Parts............................................		32
Product Features.................................................	4	Service Publications..........................................		32
Air For Combustion and Ventilation.....................	5	Service Hints .....................................................		32
Installation ...........................................................	7	Technical Service ..............................................		32
Operating Heater...............................................	14	Accessories.......................................................		33
Inspecting Heater ..............................................	18	Parts Central .....................................................		33
Cleaning and Maintenance................................	19	Warranty Information...........................	Back Cover

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SAFETY INFORMATION

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

IMPORTANT: Read this owner’s manualcarefullyandcompletely 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:Carbonmonoxide poisoning may lead to death!

CarbonMonoxidePoisoning:Earlysignsofcarbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If youhave these signs, the heater may not be working properly. Getfresh air at once! Have heater serviced. Some people aremoreaffectedbycarbonmonoxidethanothers. These include pregnant women, people with heart or lung disease or anemia, those under the influence 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:Donotuseablower insert, heat exchanger insert orotheraccessorynotapproved 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 neighborʼs phone. Follow the gas supplierʼs instructions

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

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SAFETY INFORMATION

Continued

5.Alwaysrunheaterwithplaquecontrolknobatthe 1,2,3or4lockedpositions.Neversetcontrolknob between locked positions. Poor combustion and higher levels of carbon monoxide may result.

6.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.

7.Keep all air openings in front and bottom of heater clear and free of debris.This willinsure enough air for proper combustion.

8.If heater shuts off, do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced.

9.Do not run heater

•where flammable liquids or vapors are used or stored

•under dusty conditions

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 unplug heater and let cool before servicing. Only a qualified service person should service and repair heater.

12.Operating heater above elevations of 4,500 feet could cause pilot outage.

13.Topreventperformanceproblems,donotusepropane/LPfuel tank of less than 100 lbs. capacity.

14.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.

15.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.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

PRODUCT
IDENTIFICATION
Ignitor Button	Control
	Knob

Grill

Guard

Plaque

Front Panel

Heater Cabinet

Figure 1 - Vent-Free Gas Heater

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 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 an electronic ignitor to light heater fuel supply.

THERMOSTATIC HEAT CONTROL

(Thermostat Models Only) 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 notbeinstalledinaconfinedspace or unusually tight construction unless provisions are provided for adequate combustion and ventilationair.Readthefollowing instructionstoinsureproperfresh 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 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, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three following ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 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 (6 x 10-11 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 these three criteria, 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.

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 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

* Adjoining rooms are communicating only if therearedoorlesspassagewaysorventilationgrills between them.

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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AIR FOR COMBUSTION AND VENTILATION

Continued

C.InstallalowerBtu/Hrheater,iflowerBtu/Hrsize 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-

1.Determine the volume of the space (length x confined space. You will need no additional fresh

width x height).

air ventilation.

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. Di- rect-ventdrawscombustionairfromtheoutdoors 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(maximumthespacecansupport)

_________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 maximum Btu/Hr the space can support.You must provide additional fresh air. Your options are as follows:

A.Reworkworksheet,addingthespaceofanadjoiningroom.Iftheextraspaceprovidesanunconfined 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 Ventilation Air From Outdoors, page 7.

WARNING: If the area in which the heater may be operatedissmallerthanthatdefined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air byoneofthemethodsdescribed in the National Fuel Gas Code, ANSIZ223.1/NFPA54Section5.3 or applicable local codes.

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, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

	12"
	Ventilation Grills
Ventilation	Into Adjoining Room,
	Option 2
Grills	Or
into Adjoining	Remove
Room,	Door into
Option 1	Adjoining
	Room,
	Option 3
	12"

Figure 2 - Ventilation Air from Inside Building

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AIR FOR COMBUSTION

AND VENTILATION

Continued

Ventilation Air From Outdoors

Provideextrafreshairbyusingventilationgrillsor 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, 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 thermostatcontrolledpowervent.Heatedairenteringtheattic will activate the power vent.

	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:Thisheaterisintended 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: 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.

•forpropane/LPgas,externalregulator(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*

* ACSAdesign-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. The optional CSA designcertifiedequipmentshutoffvalvecanbepurchased from your dealer. See Accessories, page 33.

LOCATING HEATER

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 the floor, away from a wall.Awall mounting bracket and floor base stand are included with this heater. Determine which method is best for your application.

	CEILING
	36"
10"	Minimum
Minimum
From
Sides Of
Heater
Left	Right
Side	Side

2" Minimum To

Top Surface

FLOOR Of Carpeting,

Tile Or Other

Combustible

Material

Figure 4 - Mounting Clearances As

Viewed From Front of Heater

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INSTALLATION

Continued

WARNING: Never install the heater

•in a bedroom or bathroom

•in a recreational vehicle

•where curtains, furniture, clothing or other flammable objectsarelessthan36inches 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 inches above

floor

•locate heater where moving vehicle will not hit it

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,oilorkerosenelamps,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 heaterinroomswithoutenoughventilationairmay 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.

For convenience and efficiency, install heater

•wherethereiseasyaccessforoperation,inspection and service

•in coldest part of room

An optional fan kit is available from your dealer. See Accessories, page 33. If planning to use fan, locate heater near an electrical outlet.

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.Snapclampintouppermountingholeasshown in Figure 5. Mounting hole is located on lower left edge on back of heater. Make sure the thermostat sensing bulb is pointing up.

Thermostat

Sensing

Bulb

Clamp

Figure 5 - Attaching Thermostat Sensing

Bulb

INSTALLING HEATER TO WALL

Mounting Bracket

Locatemountingbracketinheatercarton.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

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INSTALLATION

Continued

Methods For Attaching Mounting Bracket To Wall

Onlyuselastholeoneachendofmountingbracket to attach bracket to wall. These two holes are 14 inches 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.

AttachingtoWallAnchor:Thismethodallowsyou 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. If you can, provide greater clearances from floor and joining wall.

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.

16"	14"
Min.

AdjoiningWall	Only Insert Mounting		25 3/4"
			Optional
	Screws Through Last		19 3/4"
	Hole On Each End
			Min.
	Floor
4 and 5 Plaque Heaters
12"	14"
Min.
AdjoiningWall	Only Insert Mounting	25 3/4"
		Optional
Screws Through Last		19 3/4"
	Hole On Each End
			Min.

Floor

3 Plaque Heater

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.Placemountingbracketontowall.Lineuplast 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.

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" drillbit.Forsolidwalls(concreteormasonry),

drill at least 1" deep.

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INSTALLATION

Continued

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 into wall anchor. Push red key to “pop” open anchor wings.

IMPORTANT: Do not hammer key!

Forthickwalls(over1/2"thick)orsolidwalls, do not pop open wings.

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

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

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

Figure 9 - Folding Anchor

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 9.

If installing bottom mounting screw into wall stud,drillholesatmarkedlocationsusing9/64" drill bit.

5.Replace heater onto mounting bracket.

6.Placespacersbetweenbottommountingholes and wall anchor or drilled hole.

7.Holdspacerinplacewithonehand.Withother 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 and 13).

Figure 10 - Popping 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

Mounting Bracket (attached

to wall)

Stand-Out Tab

Figure 11 - Mounting Heater Onto

Mounting Bracket

Front View

Wall

Heater

Spacer

Side View

Figure 12 - Installing Bottom Mounting

Screws

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INSTALLATION

Continued

MOUNTING HEATER TO FLOOR

Mounting Base Feet to Heater

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

2.Align holes in base foot with mounting holes on bottom of cabinet (see Figure 13).

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

4.Repeat for other side.

Mounting Base Feet to Floor (Where required by local code)

1.Remove front cover (see Removing Front Panel of Heater, page 8).

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 inch diameter hole, 3/4 inch deep. (Do not use anchors in wood floors).

If mounting base to a concrete floor, drill with 1/4 inch diameter concrete drill bit, 13/8 inches 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.

Wood

Screw

Base Foot

Sheet Metal Screw

Figure 13 - Installing Base Feet

CONNECTING TO GAS SUPPLY

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

WARNING:Aqualifiedservice personmustconnectheatertogas supply. Follow all local codes.

WARNING: For natural gas, neverconnectheatertoprivate(nonutility) 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 linepressuremustbenogreaterthan10.5inchesof water. If gas line pressure is higher, heater regulator damage could occur.

CAUTION: For propane/LP gas, never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install theexternalregulatorbetweenthe 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 incominggaspressuretobetween11and14inches 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.

Propane/LP

Supply Tank External

Regulator

Vent

Pointing

Down

Figure 14 - External Regulator With Vent

Pointing Down

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