Vanguard Heating Electric Heater VN1800TB User Manual

INFRARED VENT-FREE NATURAL GAS HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

VN1800TB

VN3000TB

WARNING: Improper installa-

tion, adjustment, alteration,

service, or maintenance can

cause injury or property dam-

age. Refer to this manual for

correct installation and op-

erational procedures. For as-

sistance or additional infor-

mation consult a qualified in-

staller, service agency, or the

gas supplier.

WARNING: If the information in this manual is not

followed exactly, a fire or explosion may result

causing property damage, personal injury, or loss

of life.

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any

other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use

any phone in your building.

• Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instructions.

• If you cannot reach your gas supplier, call the

fire department.

WARNING: This is an unvented

gas-firedheater. Itusesair(oxy-

gen) from the room in which it is

installed. Provisions for ad-

equate combustion and ventila-

tion air must be provided. Refer

to Air for Combustion and Ven-

tilationonpage4ofthismanual.

— Installation and service must be performed by a

qualified installer, service agency, or the gas

supplier.

This appliance may be installed in an aftermarket*, permanently located, manufac-

tured (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

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OWNER’S MANUAL

PRODUCT

IDENTIFICATION

PRODUCT

FEATURES

SAFETY DEVICE

Piezo Ignitor

Control Knob

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

Grill

Guard

This heater has a piezo ignitor. This system

requires no matches, batteries, or other

sources to light heater.

Burners

Front

Panel

Heater

Cabinet

Figure 1 - Vent-Free Natural Gas Heater (Model VN3000TB Shown)

LOCAL CODES

UNPACKING

Install and use heater with care. Follow all 1. Remove heater from carton.

localcodes.Intheabsenceoflocalcodes,use

2. Remove all protective packaging ap-

plied to heater for shipment.

the latest edition of National Fuel Gas Code

ANS Z223.1, also known as NFPA 54*.

3. Check heater for any shipping damage.

If heater is damaged, promptly inform

dealer where you bought heater.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

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INFRARED NATURAL GAS HEATER

Confined and Unconfined Space

PRODUCING ADEQUATE

VENTILATION

AIR FOR

The National Fuel Gas Code ANS Z223.1

defines a confined space as a space whose

volume is less than 50 cubic feet per 1,000

Btu per hour (4.8 m³per kw) of the aggre-

gate 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 m³per

kw) of the aggregate input rating of all

appliances installed in that space. Rooms

communicating directly with the space in

whichtheappliancesareinstalled*,through

openings not furnished with doors, are con-

sidered a part of the unconfined space.

COMBUSTION AND

VENTILATION

The following are excerpts from National

Fuel Gas Code. NFPA 54/ANS Z2233.1, Sec-

tion 5.3, Air for Combustion and Ventilation.

WARNING: This heater shall

notbeinstalledinaconfinedspace

or unusually tight construction

unless provisions are provided

foradequatecombustionandven-

tilation air. Read the following in-

structions to insure proper fresh

air for this and other fuel-burning

appliances in your home.

All spaces in homes fall into one of the three

following ventilation classifications:

1. Unusually Tight Construction

2. Unconfined Space

3. Confined Space

The information on pages 4 through 6 will

help you classify your space and provide

adequate ventilation.

Today’s homes are built more energy effi-

cient than ever. New materials, increased

insulation, and new construction methods

helpreduceheatlossinhomes.Homeowners

weather strip and caulk around windows and

doorstokeepthecoldairoutandthewarmair

in. During heating months, home owners

want their homes as airtight as possible.

This heater shall not be installed in a con-

fined space or unusually tight construction

unless provisions are provided for adequate

combustion and ventilation air.

Unusually Tight Construction

The air that leaks around doors and win-

dows may provide enough fresh air for

combustion and ventilation. However, in

buildings of unusually tight construction,

you must provide additional fresh air.

* Adjoining rooms are communicating only

iftherearedoorlesspassagewaysorventila-

tion grills between them.

Unusually tight construction is de-

fined as construction where:

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 com-

bustion and ventilation.

a. walls and ceilings exposed to the

outside atmosphere have a con-

tinuous water vapor retarder with

a rating of one perm (6 x 10^-11kg

per pa-sec-m²) or less with open-

ings gasketed or sealed and

Exhaustfans, fireplaces, clothesdryers, and

fuel burning appliances draw air from the

house to operate. You must provide ad-

equate fresh air for these appliances. This

will insure proper venting of vented fuel-

burning appliances.

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, be-

tween sole plates and floors, be-

tween wall-ceiling joints, be-

tween wall panels, at penetra-

tions for plumbing, electrical, and

gas lines, and at other openings.

If your home meets all of the three

criteria above, you must provide ad-

ditional fresh air. See Ventilation Air

From Outdoors, page 6.

If your home does not meet all of the

threecriteriaabove,seeDetermining

Fresh-Air Flow for Heater Location,

page 5

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OWNER’S MANUAL

AIR FOR

COMBUSTION AND

VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this worksheet to determine if you have a confined or unconfined space.

Space: Includes the room in whichyou will install heater plus any adjoining roomswith 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. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.

_________________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)

3. Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free heater

Gas water heater*

Gas furnace

________________ Btu/Hr

Example:

Gas water heater

40,000 Btu/Hr

Vented gas heater

Gas fireplace logs

Vent-free heater + 18,000 Btu/Hr

Total 58,000 Btu/Hr

Other gas appliances* + ________________ Btu/Hr

Total = ________________ Btu/Hr

* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

____________Btu/Hr (maximum the space can support)

____________Btu/Hr (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space can support)

58,000 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 adjoin-

ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.

B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.

C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no

additional fresh air ventilation.

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space

or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of

the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3 or applicable local codes.

Continued

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INFRARED NATURAL GAS HEATER

AIR FOR

COMBUSTION AND

VENTILATION

12"

Continued

VENTILATION AIR

Ventilation Air From Inside

Building

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills

Thisfreshairwouldcomefromanadjoining

unconfined space. When ventilating to an

adjoining unconfined space, you must pro-

vide 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 op-

tion 3, Figure 2). Follow the National Fuel

Gas Code NFPA 54/ANS Z223.1, Section

5.3, Air for Combustion and Ventilation for

required size of ventilation grills or ducts.

into Adjoining

Room,

Option 1

Remove

Door into

Adjoining

Room,

Option 3

12"

WARNING: Rework work-

sheet, adding the space of the

adjoining unconfined space. The

combined spaces must have

enough fresh air to supply all

appliances in both spaces.

Figure 2 - Ventilation Air from Inside Building

Ventilation Air From Outdoors

Ventilated

Attic

Outlet

Air

Provide extra fresh air by using ventilation

grills or ducts. You must provide two per-

manent openings: one within 12" of the

ceiling and one within 12" of the floor.

Connect these items directly to the outdoors

orspacesopentotheoutdoors.Thesespaces

include attics and crawl spaces. Follow the

National Fuel Gas Code NFPA 54/ANS

Z223.1,Section5.3,AirforCombustionand

Ventilation for required size of ventilation

grills or ducts.

Outlet

Air

To Attic

Crawl

Space

Inlet

Air

IMPORTANT: Do not provide openings for

inlet or outlet air into attic if attic has a

thermostat-controlledpowervent.Heatedair

enteringtheatticwillactivatethepowervent.

Ventilated

Crawl Space

Inlet Air

Figure 3 - Ventilation Air from Outdoors

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OWNER’S MANUAL

IMPORTANT: Vent-free heaters add mois-

ture to the air. Although this is beneficial,

installing heater in rooms without enough

ventilationairmaycausemildewtoformfrom

too much moisture. See Fresh Air for Com-

bustion and Ventilation, pages 4 through 6.

LOCATING HEATER

INSTALLATION

This heater is designed to be mounted on

a wall.

NOTICE: This heater is intended

foruseassupplementalheat.Use

this heater along with your pri-

mary heating system. Do not in-

stall this heater as your primary

heat source. If you have a central

heating system, you may run

system’scirculatingblowerwhile

usingheater.Thiswillhelpcircu-

late the heat throughout the

house. In the event of a power

outage, you can use this heater

as your primary heat source.

WARNING:Maintainthemini-

WARNING ICON

001

mumclearancesshowninFigure

4.Ifyoucan,providegreaterclear-

ances from floor, ceiling, and

joining wall.

Forconvenienceandefficiency,installheater

• where there is easy access for operation,

inspection, and service

• in coldest part of room

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 22.

An optional fan kit is available from your

dealer. See Accessories, page 22. If plan-

ning to use fan, locate heater near an electri-

cal outlet.

CEILING

WARNING: Never install the

heater

WARNING: A qualified ser-

WARNING ICON

001

• 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

36"

Minimum

vice person must install heater.

Follow all local codes.

Minimum

From

Sides Of

Heater

CHECK GAS TYPE

Use only natural gas. If your gas supply is

not natural, do not install heater. Call dealer

where you bought heater for proper type

heater.

Left

Side

Right

Side

Minimum To

Top Surface

INSTALLATION ITEMS

3" Minimum

Of Carpeting,

Of Carpe

Tile Or Other

FLOOR

Combust

Beforeinstallingheater,makesureyouhave

the items listed below.

Combustible

Material

CAUTION: If you install the

heater in a home garage

• heaterpilotandburnermustbe

at least 18 inches above floor

• locateheaterwheremovingve-

hicle will not hit it

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• ground joint union

• test gauge connection *

• sediment trap

Figure4-MountingClearancesAsViewed

From Front of Heater

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 to-

bacco smoke, aromatic candles,

cleaning fluids, oil or kerosene

lamps, etc.) in the air exist, may

discolor walls.

• tee joint

• pipe wrench

* A CSA/AGA design-certified equipment

shutoff valve with 1/8" NPT tap is an ac-

ceptable alternative to test gauge connec-

tion. Purchase the optional CSA/AGA de-

sign-certifiedequipmentshutoffvalvefrom

your dealer. See Accessories, page 22.

Continued

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INFRARED NATURAL GAS HEATER

13"

Min.

16"

Methods For Attaching

Mounting Bracket To Wall

INSTALLATION

Continued

Only use last hole on each end of mounting

bracket to attach bracket to wall. These two

holes are 16 inches apart from their centers.

Attach mounting bracket to wall in one of

two ways.

INSTALLING HEATER TO

WALL

Only Insert Mounting

Screws Through Last

Hole On Each End

18 3/4"

Min.

AjdoingWal

Mounting Bracket

Locate mounting bracket in heater car- 1. Attaching to wall stud

Floor

ton. Remove mounting bracket from

heater carton.

2. Attaching to wall anchor

Attaching to wall stud: This method pro-

vides the strongest hold. Insert mounting

screws through mounting bracket and into

wall studs.

Model VN3000TB

9 1/4"

Min.

16"

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).

Mounting

Bracket

Only Insert Mounting

Screws Through Last

Hole On Each End

18 3/4"

Min.

Figure 5 - Mounting Bracket Location

AjdoingWal

Removing Front Panel Of Heater

1. Remove two screws near bottom cor-

ners of front panel.

Decidewhichmethodbettersuitsyourneeds.

Eithermethodwillprovideasecureholdfor

the mounting bracket.

Floor

2. Lift straight up on grill guard until it stops.

Grill guard will slide up about 1/4".

Model VN1800TB

Marking Screw Locations

1. Tape mounting bracket to wall where

heater will be located. Make sure

mounting bracket is level.

Figure 7 - Mounting Bracket Clearances

3. Pull bottom of front panel forward,

then down.

WARNING:Maintainminimum

clearances shown in Figure 7. If

you can, provide greater clear-

ancesfromfloorandjoiningwall.

2. Mark screw locations on wall (see Fig-

ure 7).

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.

Figure6-RemovingFrontPanelOfHeater

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OWNER’S MANUAL

Installing Bottom Mounting

Screws

1. Locate two bottom mounting holes.

These holes are near bottom on back

panel of heater (see Figure 11).

INSTALLATION

Continued

Attaching Mounting Bracket To

Wall

2. Mark screw locations on wall.

Note: Wall anchors, mounting screws, and

spacers are in hardware package. The hard-

ware package is provided with heater.

Figure 8 - Folding Anchor

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 un-

der Attaching To Wall Anchor Method.

If installing bottom mounting screw

into wall stud, drill holes at marked lo-

cations using 9/64" drill bit.

Attaching To Wall Stud Method

Forattachingmountingbrackettowallstuds

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.

Figure 9 - Popping Open Anchor Wings

For Thin Walls

5. Replace heater onto mounting bracket.

6. Place spacers between bottom mount-

ing holes and wall anchor or drilled hole

(see Figure 11).

Placing Heater On Mounting

Bracket

1. Locate two horizontal slots on back

panel of heater.

3. Insert mounting screws through bracket

and into wall studs.

4. Tighten screws until mounting bracket

is firmly fastened to wall studs.

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.

2. Place heater onto mounting bracket.

Slide horizontal slots onto stand-out

tabs on mounting bracket.

Attaching To Wall Anchor Method

For attaching mounting bracket to hollow

walls (wall areas between studs) or solid

walls (concrete or masonry)

8. Tighten both screws until heater is firmly

secured to wall. Do not over tighten.

Horizontal Slots

1. Drill holes at marked locations using

5/16" drill bit. For solid walls (concrete

or masonry), drill at least 1" deep.

Note: Do not replace front panel at this

time. Replace front panel after making

gas connections and checking for leaks

(see pages 10 and 11).

2. Fold wall anchor as shown in Figure 8.

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.

Spacer

Wall

Mounting Bracket

Stand-Out Tab

IMPORTANT: Do not hammer key!

For thick walls (over 1/2" thick) or solid

walls, do not pop open wings.

(attached to wall)

Figure 10 - Mounting Heater Onto

Mounting Bracket

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.

Screw

Figure 11 - Installing Bottom Mounting

Screws

7. Tighten screws until mounting bracket

is firmly fastened to wall.

Continued

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INFRARED NATURAL GAS HEATER

IMPORTANT:Installanequipmentshutoff Installsedimenttrapinsupplylineasshown

valve in an accessible location. The equip- in Figure 12. Locate sediment trap where it

ment shutoff valve is for turning on or is within reach for cleaning. Locate sedi-

INSTALLATION

Continued

shutting off the gas to the appliance.

ment 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.

CONNECTING TO GAS

SUPPLY

Apply pipe joint sealant lightly to male

threads. This will prevent excess sealant

from going into pipe. Excess sealant in pipe

could result in clogged heater valves.

WARNING:Thisappliancere-

quires a 3/8" NPT (National Pipe

Thread) inlet connection to the

pressure regulator.

IMPORTANT: Hold pressure regulator

with wrench when connecting it to gas pip-

ing and/or fittings.

CAUTION:Usepipejointseal-

ant that is resistant to liquid pe-

troleum (LP) gas.

WARNING:Aqualifiedservice

person must connect heater to

gassupply.Followalllocalcodes.

WARNING: Never connect

heater to private (non-utility) gas

wells. This gas is commonly

known as well-head gas.

IMPORTANT: Check gas line pressure be-

fore connecting heater to gas line. Gas line

pressure must be no greater than 14 inches

of water. If gas line pressure is higher,

heater regulator damage could occur.

Pressure Regulator

3/8" NPT

Pipe Nipple

Heater

Cabinet

CAUTION: Use only new,

black iron or steel pipe. Inter-

nally-tinned copper tubing may

be used in certain areas. Check

yourlocalcodes.Usepipeoflarge

enough diameter to allow proper

gas volume to heater. If pipe is

too small, undue loss of pres-

sure will occur.

Ground Joint

Union

Tee Joint

Reducer

Bushing to

1/8" NPT

Test

Gauge

Connection *

Equipment Shutoff

Valve *

Inlet Pipe From Gas

Meter (7" W.C. to

10.5" W.C. Pressure)

1/8" NPT

Plug Tap

Typical Inlet Pipe Diameters

VN1800TB

VN3000TB

3/8" or greater

1/2" or greater

Tee Joint

Pipe Nipple

Cap

Sediment

Trap

3" Minimum

Installation must include an equipment

shutoff valve, union, and plugged 1/8" NPT

tap. Locate NPT tap within reach for test

gauge hook up. NPT tap must be upstream

from heater (see Figure 12).

Figure 12 - Gas Connection

* ACSA/AGAdesign-certifiedequipmentshutoffvalvewith1/8"NPTtapisanacceptable

alternative to test gauge connection. Purchase the optional CSA/AGA design-certified

equipment shutoff valve from your dealer. See Accessories, page 22.

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OWNER’S MANUAL

3. Check all joints from gas meter to

equipment shutoff valve (see Figure

INSTALLATION

OPERATING

Continued

14). Apply mixture of liquid soap and HEATER

water to gas joints. Bubbles forming

show a leak.

CHECKING GAS

CONNECTIONS

FOR YOUR SAFETY

4. Correct all leaks at once.

READ BEFORE

LIGHTING

WARNING: Test all gas pip-

ing and connections for leaks

after installing or servicing. Cor-

rect all leaks at once.

Pressure Testing Heater Gas

Connections

1. Open equipment shutoff valve (see Fig-

ure 13).

WARNING: If you do not fol-

low these instructions exactly, a

fireorexplosionmayresultcaus-

ing property damage, personal

injury or loss of life.

2. Open main gas valve located on or near

gas meter.

WARNING:Neveruseanopen

flame to check for a leak. Apply a

mixture of liquid soap and water

to all joints. Bubbles forming

show a leak. Correct all leaks at

once.

3. Make sure control knob of heater is in

the OFF position.

A. This appliance has a pilot which must

be lighted by hand. When lighting the

pilot, follow these instructions exactly.

4. Check all joints from equipment shutoff

valve to control valve (see Figure 14).

Apply mixture of liquid soap and wa-

ter to gas joints. Bubbles forming show

a leak.

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.

Pressure Testing Gas Supply

Piping System

5. Correct all leaks at once.

Test Pressures In Excess Of 1/2 PSIG

(3.5 kPA)

6. Light heater (see Operating Heater,

pages ll through 13). Check the rest of

the internal joints for leaks.

WHATTO DO IFYOU 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.

1. Disconnect appliance with its appliance

main gas valve (control valve) and equip-

ment shutoff valve from gas supply pip-

ing system. Pressures in excess of 1/2 psig

will damage heater regulator.

7. Turn off heater (see To Turn Off Gas to

Appliance, page 12).

8. Replace front panel.

Open

2. Cap off open end of gas pipe where

equipment shutoff valve was con-

nected.

POS

Equipment

Shutoff

Valve

• If you cannot reach your gas sup-

plier, call the fire department.

3. Pressurize supply piping system by

either using compressed air or open-

ing main gas valve located on or near

gas meter.

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’t try to repair it, call a

qualified service technician or gas

supplier. Force or attempted repair

may result in a fire or explosion.

Closed

4. Check all joints of gas supply piping

system. Apply mixture of liquid soap

and water to gas joints. Bubbles form-

ing show a leak.

Figure 13 - Equipment Shutoff Valve

D. Do not use this appliance if any part

has been under water. Immediately

call a qualified service technician

to inspect the appliance and to re-

place any part of the control sys-

tem and any gas control which has

been under water.

Control Valve Location

5. Correct all leaks at once.

6. Reconnect heater and equipment

shutoff valve to gas supply. Check re-

connected fittings for leaks.

Test Pressures Equal To or Less Than

1/2 PSIG (3.5 kPA)

Gas Meter

1. Close equipment shutoff valve (see

Figure 13).

Equipment

Shutoff

Valve

2. Pressurize supply piping system by ei-

ther using compressed air or opening

main gas valve located on or near gas

meter.

Continued

Figure 14 - Checking Gas Joints

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INFRARED NATURAL GAS HEATER

8. Turn control knob counterclockwise

TO TURN OFF GAS

TO APPLIANCE

OPERATING

to desired heating level. The

main burner should light. Set control

knob to any heat level between HI

and LOW (see Figure 17).

HEATER

Shutting Off Heater

1. Turn control knob clockwise

to the OFF position.

Continued

LIGHTING

INSTRUCTIONS

1. STOP! Read the safety information

on page 11, column 3.

CAUTION:Donottrytoadjust

heatinglevelsbyusingtheequip-

ment shutoff valve.

2. Turn off all electric power to the ap-

pliance if service is to be performed.

Shutting Off Burner Only (pilot

stays lit)

2. Make sure equipment shutoff valve

is fully open.

Ignitor Button

Control Knob

Turn control knob clockwise

the PILOT position.

3. Turn control knob clockwise

to the OFF position.

4. Wait five (5) minutes to clear out any

gas. Then smell for gas, including

near the floor. If you smell gas,

STOP! Follow “B” in the safety in-

formation page 11, column 3. If you

don’t smell gas, go to the next step.

THERMOSTAT

CONTROL

OPERATION

P I L O T

O F F

H I

IGNITOR

The thermostatic control used on these

modelsdiffersfromstandardthermostats.

Standard thermostats simply turn on and

off the burner. The thermostat used on

this heater senses the room temperature.

At times the room may exceed the set

temperature.Ifso,theburnerwillshutoff.

The burner will cycle back on when room

temperaturedropsbelowthesettempera-

ture. The control knob can be set to any 2

comfort level between HI and LO.

5. Turn control knob counterclockwise

to the PILOT position. Press

in control knob for five (5) seconds

(see Figure 15).

Figure 15 - Control Knob In The OFF

Position

Ignitor Electrode

Note: You may be running this

heater for the first time after hook-

ing up to gas supply. If so, the con-

trol knob may need to be pressed in

for 30 seconds. This will allow air to

bleed from the gas system.

• If control knob does not pop up

when released, contact a quali-

fied service person or gas sup-

plier for repairs.

Thermocouple

Pilot Burner

Note: The thermostat sensing bulb mea-

sures the temperature of air near the

heatercabinet.Thismaynotalwaysagree

with room temperature (depending on

housing construction, installation loca-

tion, room size, open air temperatures,

etc.) Frequent use of your heater will let

you determine your own comfort levels.

6. With control knob pressed in, push

down and release ignitor button.

This will light pilot. The pilot is at-

tached to the front of burner. If

needed, keep pressing ignitor but-

ton until pilot lights.

Figure 16 - Pilot

Control Knob

VN1800TB

VN3000TB

Note: If pilot does not stay lit, refer to

Troubleshooting, pages 14 through 16.

Also contact a qualified service person

or gas supplier for repairs. Until re-

pairs are made, light pilot with match.

To light pilot with match, see Manual

Lighting Procedure on page 13.

H I

7. Keep control knob pressed in for 30

seconds after lighting pilot. After 30

seconds, release control knob.

O F F

Note: If pilot goes out, repeat steps

3 through 7. This heater has a safety

interlock system. Wait one (1) minute

before lighting pilot again.

Figure 17 - Burner Patterns

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OWNER’S MANUAL

ODS/PILOT AND BURNER

ORIFICE

• Use a vacuum cleaner, pressurized air, or

small, soft bristled brush to clean.

BURNER FLAME PATTERN

OPERATING

Figure 20 shows a correct burner flame

pattern.Figure21showsanincorrectburner

flame pattern.

HEATER

Continued

MANUAL LIGHTING

CLEANING BURNER

PILOT AIR INLET HOLE

If pilot flame pattern is incorrect, as shown

in Figure 21

PROCEDURE

We recommend that you clean the unit every

2,500hoursofoperationoreverythreemonths.

1. Follow steps 1 through 5 under Light-

• turn heater off (see To Turn Off Gas to

ing Instructions on page 12.

Appliance, page 12)

2. With control knob pressed in, strike

match. Hold match to pilot until pi-

lot lights.

• see Troubleshooting, pages 14 through 16

Wealsorecommendthatyoukeeptheburner

tubeandpilotassemblycleanandfreeofdust

and dirt. To clean these parts we recommend

using compressed air no greater than 30 PSI.

Yourlocalcomputerstore,hardwarestore,or

home center may carry compressed air in a

can. You can use a vacuum cleaner in the

blow position. If using compressed air in a

can,pleasefollowthedirectionsonthecan.If

you don't follow directions on the can, you

could damage the pilot assembly.

3. Keep control knob pressed in for 30

seconds after lighting pilot. After 30

seconds, release control knob. Now

follow step 8 under Lighting Instruc-

tions, page 12

INSPECTING

BURNER

Check pilot flame pattern and burner flame

pattern often.

Figure 20 - Correct Burner Flame Pattern

1. Shut off the unit, including the pilot.

Allow the unit to cool for at least

thirty minutes.

2. Inspect burner, pilot for dust and dirt.

PILOT FLAME PATTERN

3. Blow air through the ports/slots and

holes in the burner.

Figure18showsacorrectpilotflamepattern.

Figure 19 shows an incorrect pilot flame

pattern.Theincorrectpilotflameisnottouch-

ing the thermocouple. This will cause the

thermocouple to cool. When the thermo-

couple cools, the heater will shut down.

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 hole about two inches from where the

pilot flame comes out of the pilot assembly

(see Figure 22). With the unit off, lightly

blow air through the air inlet hole. You may

blowthroughadrinkingstrawifcompressed

air is not available.

Bad Burner Pattern-Plaque

Figure21-IncorrectBurnerFlamePattern

GRH/OV 019

If pilot flame pattern is incorrect, as shown

in Figure 19

• turn heater off (see To Turn Off Gas to

CLEANING AND

MAINTENANCE

Appliance, page 12)

CABINET

• see Troubleshooting, pages 14 through 16

Air Passageways

• Use a vacuum cleaner or pressurized air

to clean.

Pilot Burner

WARNING: Turn off heater

and let cool before cleaning.

Exterior

Thermocouple

CAUTION: You must keep

control areas, burner, and circu-

lating air passageways of heater

clean. Inspect these areas of

heater before each use. Have

heaterinspectedyearlybyaquali-

fied service person. Heater may

needmorefrequentcleaningdue

to excessive lint from carpeting,

bedding material, pet hair, etc.

• Use a soft cloth dampened with a mild

soap and water mixture. Wipe the cabi-

net to remove dust.

GOOD PILOT

GRH/OV 009

Figure 18 - Correct Pilot Flame Pattern

Pilot Air Inlet

Hole

Pilot Burner

Thermocouple

Pilot Assembly

BAD PILOT

GRH/OV 010

Figure 22 - Pilot Inlet Air Hole

Figure 19 - Incorrect Pilot Flame Pattern

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INFRARED NATURAL GAS HEATER

TROUBLESHOOTING

Note: For additional help, visit DESA

International’stechnicalservicewebsite

at www.desatech.com.

WARNING: Turn off and un-

plug heater and let cool before

servicing. Only a qualified ser-

vice person should service and

repair heater.

CAUTION: Never use a wire,

needle, or similar object to clean

ODS/pilot.ThiscandamageODS/

pilot unit.

Note:Alltroubleshootingitemsarelistedin

order of operation.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Whenignitorbuttonispressedin,thereisno 1. Ignitor electrode positioned wrong

spark at ODS/pilot 2. Ignitor electrode broken

1. Replace ignitor

2. Replace ignitor

3. Ignitor electrode not connected to igni- 3. Reconnect ignitor cable

tor cable

4. Ignitor cable pinched or wet

4. Free ignitor cable if pinched by any

metal or tubing. Keep ignitor cable dry

5. Replace ignitor cable

6. Replace control valve (piezo is part of

control valve)

5. Broken ignitor cable

6. Bad piezo ignitor

7. Piezo ignitor nut is loose

7. Tighten nut holding piezo ignitor. Nut

is located inside heater cabinet at top

ODS/pilot lights but flame goes out when 1. Gas supply turned off or equipment 1. Turn on gas supply or open equipment

control knob is released shutoff valve closed shutoff valve

2. Control knob not fully pressed in while 2. Fully press in control knob while press-

pressing ignitor button (non-thermostat

ing ignitor button (non-thermostat mod-

models only)

els only)

Thermostat control knob not fully

pressed in while pressing ignitor button

(thermostat models only)

Fully press in thermostat control knob

while pressing ignitor button (thermo-

stat models only)

3. Air in gas lines when installed

3. Continue holding down control knob.

Repeat igniting operation until air is re-

moved

4. ODS/pilot is clogged

4. Clean ODS/pilot (see Cleaning and

Maintenance, page 13 ) or replace ODS/

pilot assembly

5. Gas regulator setting is not correct

5. Replace gas regulator

6. Thermostat control knob not in pilot 6. Turn thermostat control knob to pilot

position position

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OWNER’S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

When ignitor button is pressed in, there is a 1. Control knob not fully pressed in

1. Press in control knob fully

spark at ODS/pilot but no ignition

2. Control knob not pressed in long enough 2. After ODS/pilot lights, keep control

knob pressed in 30 seconds

3. Equipment shutoff valve not fully open 3. Fully open equipment shutoff valve

4. Thermocouple connection loose at con- 4. Hand tighten until snug, then tighten

trol valve

1/4 turn more

5. Pilot flame not touching thermocouple, 5. A) Contact local natural gas company

which allows thermocouple to cool,

causing pilot flame to go out. This prob-

lem could be caused by one or both of

the following:

B) Clean ODS/pilot (see Cleaning and

Maintenance, page 13) or replace ODS/

pilot assembly

A) Low gas pressure

B) Dirty or partially clogged ODS/pilot

6. Thermocouple damaged

7. Control valve damaged

6. Replace thermocouple

7. Replace control valve

8. Safety interlock system has been trig- 8. Wait one minute for safety interlock sys-

gered (thermostat models only)

tem to reset. Repeat ignition operation

Burner(s) does not light after ODS/pilot is lit 1. Burner orifice(s) is clogged

1. Clean burner orifice(s) (see Cleaning

and Maintenance, page 13) or replace

burner orifice(s)

2. Burner orifice(s) diameter is too small

2. Replace burner orifice(s)

3. Inlet gas pressure is too low

3. Contact local natural gas company

Delayed ignition of burner(s)

1. Manifold pressure is too low

2. Burner orifice(s) is clogged

1. Contact local natural gas company

2. Clean burner orifice(s) (see Cleaning

and Maintenance, page 13) or replace

burner orifice(s)

Burner backfiring during combustion

1. Burner orifice(s) is clogged or damaged 1. Clean burner orifice(s) (see Cleaning

and Maintenance, page 13) or replace

burner orifice(s)

2. Burner damaged

2. Replace burner

3. Gas regulator defective

3. Replace gas regulator

Burner plaque(s) does not glow

1. Plaque damaged

1. Replace burner

2. Inlet gas pressure is too low

2. Contact local natural gas company

3. Control knob set between locked 3. Turn control knob until it locks at de-

positions sired setting

Slight smoke or odor during initial operation 1. Residues from manufacturing processes 1. Problem will stop after a few hours of

operation

Heater produces a clicking/ticking noise 1. Metal expanding while heating or con- 1. This is common with most heaters. If

just after burner is lit or shut off

tracting while cooling

noise is excessive, contact qualified ser-

vice person

Whitepowderresidueformingwithinburner 1. When heated, vapors from furniture pol- 1. Turn heater off when using furniture

box or on adjacent walls or furniture

ish, wax, carpet cleaners, etc. turn into

white powder residue

polish, wax, carpet cleaners, or similar

products

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Continued

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INFRARED NATURAL GAS HEATER

TROUBLESHOOTING

Continued

WARNING: 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.

• Immediatelycallyourgassupplierfromaneighbor’sphone. Followthe

gas supplier’s instructions.

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

IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning

supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles,

etc., create fumes. These fumes may mix with combustion air and create odors.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Heater produces unwanted odors

1. Heater burning vapors from paint, hair

spray, glues, etc. See IMPORTANT

statement above

1. Ventilate room. Stop using odor caus-

ing products while heater is running

2. Gas leak. SeeWarning statement at

top of page

2. Locate and correct all leaks (see Check-

ing Gas Connections, page 11)

Heater shuts off in use (ODS operates)

1. Not enough fresh air is available

2. Low line pressure

3. ODS/pilot is partially clogged

1. Open window and/or door for ventilation.

2. Contact local natural gas company.

3. Clean ODS/pilot (see Cleaning and

Maintenance, page 13)

Gas odor even when control knob is in OFF 1. Gas leak. SeeWarning statement at

1. Locate and correct all leaks (see Check-

ing Gas Connections, page 11)

2. Replace control valve

position

top of page

2. Control valve defective

Gas odor during combustion

1. Foreign matter between control valve

and burner

1. Take apart gas tubing and remove for-

eign matter

2. Gas leak. SeeWarning statement at

top of page

2. Locate and correct all leaks (see Check-

ing Gas Connections, page 11)

Moisture/condensationnoticedonwindows 1. Not enough combustion/ventilation air

1. Refer to Fresh Air for Combustion and

Ventilation requirements (page 4)

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OWNER’S MANUAL

SPECIFICATIONS

REPLACEMENT

PARTS

Note: Use only original replacement parts.

Thiswillprotectyourwarrantycoveragefor

parts replaced under warranty.

VN1800TB

VN3000TB

30,000

Natural Only

Piezo

Btu

18,000

Type Gas

Ignition

Natural Only

Piezo

Pressure Regulator Setting

Inlet Gas Pressure* (in. of water)

Maximum

Minimum

Dimensions, Inches (H x W x D)

6" W.C.

PARTS UNDER WARRANTY

10.5"

Contact authorized dealer from whom you

purchased this product. If they are unable to

supply original replacement part(s), call

DESAInternational’sTechnicalServiceDe-

Heater

Carton

23.5 x 18.5 x 8

25.8 x 21.3 x 10.1

23.5 x 25.9 x 8

25.8 x 28.7 x 10.1

partmentat1-800-323-5190forinformation.

When contacting your dealer or DESA In-

ternational, have ready:

Weight (pounds)

Heater

• your name

Shipping

• your address

Note: Dimensions listed are outer most points on the heater (includes control knobs

and grill).

• model and serial numbers of your heater

• how heater was malfunctioning

• type of gas used (propane/LPor natural gas)

• purchase date

* For purposes of input adjustment.

SERVICE HINTS

When Gas Pressure Is Too Low

SERVICE

PUBLICATIONS

Youcanpurchaseaservicemanualfromthe

address listed on the back page of this

manual. Send a check for $5.00 payable to

DESA International.

Usually, we will ask you to return the defec-

tive part to the factory.

• pilot will not stay lit

PARTS NOT UNDER

WARRANTY

• burner(s) will have delayed ignition

• heater will not produce specified heat

Contact authorized dealers of this product.

If they can’t supply original replacement

part(s), call DESA International’s Parts

Department at 1-800-972-7879 for referral

information. When calling DESA Interna-

tional, have ready:

When Gas Quality Is Bad

• pilot will not stay lit

TECHNICAL

SERVICE

• burner(s) will produce flames and soot

• heater will backfire when lit

You may have further questions about in-

stallation, operation, or troubleshooting. If

so, contact DESA International’s Technical

Service Department at 1-800-323-5190.

• model number of your heater

• the replacement part number

You may feel your gas pressure is too low or

gas quality is bad. If so, contact your local

natural gas supplier.

You can also visit DESA International’s

technical service web site at

www.desatech.com.

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INFRARED NATURAL GAS HEATER

ILLUSTRATED

PARTS

BREAKDOWN

VN1800TB

13-1

13-4

13-9

13-3

13-11

13-8

13-12

13-2

13-5

13-10

13-6

13-7

13-6

13-3

ODS/PILOT

BURNER ASSEMBLY

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OWNER’S MANUAL

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions

listed under Replacement Parts on page 17 of this manual.

PARTS LIST

VN1800TB

KEY

PART

NO.

NUMBER

098304-01 Screw, #10 x 3/8"

098742-13 Front Panel

DESCRIPTION

QTY.

098238-06 Grill Guard

101108-01 Clip-Grill Guard

103843-02 Apron

M11084-26 Screw, #10 x 3/8"

098457-01 Reflector Assembly

098271-03 Ignitor Cable

099415-08 Regulator with Pressure Tap

098303-02 Screw, #6 x 3/8"

104617-10 Cabinet Assembly

097159-04 Piezo Ignitor, Snap-In

See Detail

Burner Assembly

13-1

13-2

13-3

13-4

13-5

13-6

13-7

13-8

13-9

13-10

13-11

13-12

099218-06 Burner

099056-03 Injector-Plaque A

104818-01 Tubing-Valve to Burner

099056-24 Injector-Plaque B

M11084-37 Screw, #8 x 1/4"

099387-06 Pilot Tubing

103256-01 Inlet Tubing

103594-06 ODS/Pilot

098522-16 Control Valve

M11084-26 Screw, #10 x 3/8"

098514-01 Thermocouple

106842-01 Ignitor Electrode

099066-01 Mounting Bracket

104819-01 Regulator Bracket

PARTS AVAILABLE - NOT SHOWN

098305-01 Control Position Label

100642-01 Hardware Assembly

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INFRARED NATURAL GAS HEATER

ILLUSTRATED

PARTS

BREAKDOWN

VN3000TB

13-5

13-1

13-11

13-12

13-4

13-8

13-7

13-2

13-4

13-9

13-3

13-10

13-6

13-5

13-6

13-3

ODS/PILOT

BURNER ASSEMBLY

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OWNER’S MANUAL

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions

listed under Replacement Parts on page 17 of this manual.

PARTS LIST

VN3000TB

KEY

PART

NO.

NUMBER

098304-01

098742-14

098238-07

101108-01

098198-04

DESCRIPTION

Screw, #10 x 3/8"

Front Panel

Grill Guard

Clip-Grill Guard

Apron

QTY.

M11084-26 Screw, #10 x 3/8"

13-1

13-2

13-3

13-4

13-5

13-6

13-7

13-8

13-9

13-10

13-11

13-12

098271-03

098457-02

099415-08

098303-02

104617-11

097159-04

See Detail

099218-07

099056-02

104818-02

099056-24

103256-01

099387-06

103594-07

098522-16

Ignitor Cable

Reflector Assembly

Regulator with Pressure Tap

Screw, #6 x 3/8"

Cabinet Assembly

Piezo Ignitor, Snap-In

Burner Assembly

Burner

Injector-Plaque B

Tubing-Valve to Burner

Injectors-Plaques A and C

Inlet Tubing

Pilot Tubing

ODS/Pilot

Control Valve

M11084-37 Screw, #8 x 1/4"

M11084-26 Screw, #10 x 3/8"

098514-01 Thermocouple

106842-01 Ignitor Electrode

099066-01 Mounting Bracket

104819-01 Regulator Bracket

PARTS AVAILABLE - NOT SHOWN

098305-01 Control Position Label

100642-01 Hardware Assembly

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INFRARED NATURAL GAS HEATER

ACCESSORIES

Purchasetheseheateraccessoriesfromyour

local dealer. If they can not supply these

accessories,callDESAInternational’sParts

Department at 1-800-972-7879 or write to

the address listed on the back page of this

manual for referral information.

FAN KITS - GA3100(A,B) AND

GA3200T(A,B)

FLOOR MOUNTING STAND

Model VN1800TB - GA4000B

Model VN3000TB - GA4010B

For all models. Provides better heat distribu-

tion. Makes heater more efficient. Complete

installationandoperatinginstructionsincluded.

For locating heater on the floor, away from

a wall. Complete installation instructions

provided with floor mounting stand.

Manually-controlled - GA3100(A,B). In-

cludes ON/OFF switch.

EQUIPMENT SHUTOFF

VALVE GA5010

Thermostatically-controlled -

GA32000T(A,B). Includes three settings:

ON/OFF/AUTO.

For all models. Equipment shutoff valve

with 1/8" NPT tap.

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OWNER’S MANUAL

NOTES

_______________________________________________________________________________________________

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WARRANTY INFORMATION

KEEP THIS WARRANTY

Model

Serial No.

Date Purchased

Always specify model and serial numbers when communicating with the factory.

We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written

warranty. We make no other warranty, expressed or implied.

LIMITED WARRANTY

VANGUARD VENT-FREE NATURAL GAS HEATERS

DESA International warrants this product to be free from defects in materials and components for four (4) years from the date

offirstpurchase,providedthattheproducthasbeenproperlyinstalled,operatedandmaintainedinaccordancewithallapplicable

instructions. To make a claim under this warranty the Bill of Sale or cancelled check must be presented.

This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this

heatertoproperoperatingconditionandanallowanceforlaborwhenprovidedbyaDESAAuthorizedServiceCenter. Warranty

part(s) MUST be obtained through authorized dealers of this product and/or DESA International who will provide original

factory replacement parts. Failure to use original factory replacement parts voids this warranty. The heater MUST be installed

by a qualified installer in accordance with all local codes and instructions furnished with the unit.

Thiswarrantydoesnotapplytopartsthatarenotinoriginalconditionbecauseofnormalwearandtear,orpartsthatfailorbecome

damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel,

diagnostic cost, labor, transportation and any and all such other costs related to repairing a defective heater will be the

responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE

PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND

LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MER-

CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR (4) YEARS ON ALL COMPONENTS

FROM THE DATE OF FIRST PURCHASE; AND DESA INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO

THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY

OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or

consequential damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.

For information about this warranty write:

INTERNATIONAL

2701 Industrial Drive

P.O. Box 90004

Bowling Green, KY 42102-9004

www.desatech.com

104820-01

REV. C

104820 01

02/00

NOT A UPC

Patent Pending

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