Desa VP1000BTA, VN10A User Manual

VENT-FREE GAS HEATER

For more information, visit www.desatech.com

VN600BA, VP600BA

VN1000BT A, VP1000BTA

VN10A, VP10A

VN6D, VP5D

OWNER’S OPERATION AND INSTALLATION MANUAL

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.

— 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, 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

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency, or the gas supplier.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to

Combustion and Ventilation

page 4 of this manual.

Air For

Save this manual for future reference.

TABLE OF CONTENTS SAFETY INFORMATION

TABLE OF CONTENTS

SAFETY INFORMATION ............................................................ 2

UNPACKING............................................................................... 3

PRODUCT IDENTIFICATION ..................................................... 3

PRODUCT FEATURES .............................................................. 3

LOCAL CODES........................................................................... 3

AIR FOR COMBUSTION AND VENTILATION ........................... 4

INSTALLATION ........................................................................... 6

OPERATING HEATER.............................................................. 10

INSPECTING BURNER ............................................................ 14

CLEANING AND MAINTENANCE ............................................ 15

TROUBLESHOOTING .............................................................. 16

SAFETY INFORMATION

WARNINGS

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

SPECIFICATIONS .................................................................... 19

ILLUSTRATED PARTS BREAKDOWN..................................... 20

ILLUSTRATED PARTS BREAKDOWN..................................... 24

REPLACEMENT PARTS .......................................................... 28

SERVICE HINTS....................................................................... 28

TECHNICAL SERVICE ............................................................. 28

SERVICE PUBLICATIONS ....................................................... 28

ACCESSORY............................................................................ 28

OWNER’S REGISTRATION FORM.......................................... 29

PARTS CENTRALS .................................................................. 31

WARRANTY INFORMATION......................................Back Cover

Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.

Do not place clothing or other flammable material on or near the appliance. Never place any objects on the heater.

DANGER: Carbon monoxide 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, persons 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

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 any accessory not ap-

proved for use with this 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. Do not install 10,000 Btu units in a bathroom.

For more information, visit www.desatech.com

110720-01A

SAFETY INFORMATION

UNPACKING

PRODUCT IDENTIFICATION

PRODUCT FEATURES

LOCAL CODES

SAFETY INFORMATION

Continued

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 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, pages 4 through 6.

6. Always run heater with control knob at LOW or HIGH locked positions (VP10A) or ON position (VP5D). Never set control knob between locked positions. Poor combustion may result.

7. Keep all air openings in the front and bottom of heater clear and free of debris. This will insure 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. 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.

11. 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.

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

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

14. T o prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity.

15. Provide adequate clearances around air openings.

UNPACKING

1. Remove heater from carton.

2. Remove all protective packaging applied to heater for shipment.

3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.

PRODUCT IDENTIFICATION

Piezo Ignitor Button

Glass Panel

Blue Flame Heater

Figure 1 - Vent-Free Gas Heater

Control Knob

Grill Guard

Front Panel

Heater Cabinet

Piezo Ignitor Button

Infrared Heater

Control Knob

Burners

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 ventfree room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.

PIEZO IGNITION SYSTEM

This heater has a piezo ignitor. This system requires no matches, batteries, or other sources to light heater.

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

110720-01A

For more information, visit www.desatech.com

AIR FOR COMBUSTION AND VENTILATION

Providing Adequate Ventilation Determining Fresh-Air Flow For Heater Location

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuelburning 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, 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 4 through 6 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 e xposed to the outside atmosphere

have a continuous water vapor retarder with a rating of one perm (6 x 10 openings gasketed or sealed

b. weather stripping has been added on openable win-

dows and doors

-11

kg per pa-sec-m2) or less with

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

From Outdoors

, page 6

Ventilation Air

If your home does not meet all of the three criteria above, proceed to

tion,

Determining Fresh-Air Flow For Heater Loca-

page 5.

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 there are doorless passageways or ventilation grills 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.

1. Determine the volume of the space (length x width x height). Length x Width x Height =___________ cu. ft. (volume of space)

Example:

height) = 3168 cu. ft. (volume of space) If additional ventilation to adjoining room is supplied with grills or open-

ings, 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

Example:

Btu/Hr the space can support)

Space size 22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling

can support)

2560 cu. ft. (volume of space) x 20 = 51,200 (maximum

For more information, visit www.desatech.com

110720-01A

Determining Fresh-Air Flow For Heater Location (Cont.)

AIR FOR COMBUSTION AND VENTILATION

Ventilation Air

AIR FOR COMBUSTION AND VENTILATION

Continued

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 _____________ Btu/Hr Vent-free heater + _____________ Btu/Hr Total = _____________ Btu/Hr

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) 50,000 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 ex-

tra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See V entilation Air Fr om Inside Building.

B. Vent room directly to the outdoors. See Ventilation Air From

Outdoors.

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

confined.

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, ANSI Z223.1/NFPA 54, Section 5.3

or applicable local codes.

40,000 10,000 50,000

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

Grills

into Adjoining

Room,

Option 1

Remove Door into Adjoining

Room,

Option 3

Figure 2 - Ventilation Air from Inside Building

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the 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:

attic if attic has a thermostat-controlled power vent. Heated air entering the attic will activate the power vent.

Outlet Air

Do not provide openings for inlet or outlet air into

Outlet Air

Inlet Air

Into Adjoining Room,

12"

Ventilated Attic

Option 2

Ventilated

Crawl Space

To Attic

Crawl

Space

110720-01A

Figure 3 - Ventilation Air from Outdoors

For more information, visit www.desatech.com

INSTALLATION

Check Gas Type Installation Items Locating Heater

INSTALLATION

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.

WARNING: A qualified service person must in-

stall 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.

INSTALLATION ITEMS

Before installing heater, make sure you have the items listed below.

• for propane/LP gas, external regulator (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• ground joint union

• sediment trap

• tee joint

• pipe wrench

• for natural gas, test gauge connection* * A CSA design-certified equipment shutoff valve with 1/8" NPT

tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessory, page 28.

WARNING: Never install the heater

• in a bathroom (10,000 Btu/hr only. 6,000 Btu/hr models are allowed in a bathroom. Check local codes.)

• in a recreational vehicle

• where curtains, furniture, clothing, or other flam-

mable objects are less than 36 inches from the front, top, or sides of the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces next to heater. Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as, but not limited to, tobacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in the air exist, may discolor walls or cause odors.

IMPORTANT:

Vent-free heaters add moisture to the air. Although this is beneficial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Combustion and Ventilation, pages 4 through 6.

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

For convenience and efficiency, install heater

• where there is easy access for operation, inspection, and service

• in coldest part of room

CEILING

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.

For more information, visit www.desatech.com

6" Blueflame 8" Plaque

Minimum From Sides Of Heater

Left Side

Figure 4 - Mounting Clearances As Viewed From Front of Heater

36" Minimum

Right Side

Minimum To

Minimum To Top

Of Carpeting,

Surface Of Carpeting, Tile Or Other Combustible Material

110720-01A

INSTALLATION

Continued

Installing Heater To Wall

INSTALLATION

THERMOSTAT SENSING BULB (Thermostat Models Only)

The thermostat sensing bulb is located inside the heater. Do not move this bulb during installation or operation of the heater.

INSTALLING HEATER TO WALL

Marking Screw Locations

1. Determine where you will locate heater.

WARNING: Maintain minimum clearances shown in Figure 5. If you can, provide greater clearances from floor and joining wall.

2. Mark two mounting screw locations on wall (see Figure 5).

/4"

Mounting

Screw

Locations

FLOOR

/4"

Minimum To

Maintain 3"

Clearance

From Floor

8 7/8"

Blue Flame

/8" Plaque

Minimum To

Maintain 6"

Clearance From Wall

JOINING WALL

Figure 5 - Mounting Screw Locations

4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to “pop” open anchor wings (see Figure 7).

IMPORTANT:

Do not hammer key! For thick walls (over 1/2"

thick) or solid walls, do not pop open wings.

5. Tighten two screws until 1/16" space (thickness of penny) is between screwheads and wall (see Figure 8).

Thin Walls (1/4" to 1/2" thick)

Figure 6 - Folding Anchor

1/16" Space

Figure 8 - Tightening Anchors

Figure 7 - Popping Open Anchor Wings For Thin Walls

Thin or Thick Wall (thick wall shown)

Solid Wall

Placing Heater On Mounting Screws

1. Locate two keyhole slots on back panel of heater (see Figure 9).

2. Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots.

Installing Two Mounting Screws

Note:

Wall anchors and mounting screws are in hardware package.

The hardware package is provided with heater.

Attaching to wall stud method

For attaching mounting screw to wall stud

1. Drill hole at marked location using 9/64" drill bit.

2. Insert mounting screw into wall stud.

3. Tighten screw until 1/16" space (thickness of penny) is between screwhead and wall.

Attaching to wall anchor method

Follow instructions below to attach mounting screws 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 1/4" deep.

2. Fold wall anchor (see Figure 6).

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

For more information, visit www.desatech.com

110720-01A

Keyhole Slots

Figure 9 - Location Of Keyhole Slots On Back Panel Of Heater

Removing Front Panel Of Heater

1. Remove two screws near bottom corners of front panel.

2. Lift straight up on grill guard until it stops. Grill guard will slide up about 1/4".

3. Pull bottom of front panel forward, then down.

Figure 10 - Removing Front Panel Of Heater

INSTALLATION

Installing Heater To Wall (Cont.) Connecting To Gas Supply

INSTALLATION

Continued

Installing Bottom Mounting Screw

1. Locate bottom mounting hole. This hole is near bottom on back panel of heater (see Figure 11).

2. Mark screw location on wall.

3. Remove heater from wall.

4. If installing bottom mounting screw into hollow or solid wall, install wall anchor. Follow steps 1 through 5 under Attaching To W all Anchor Method, page 7. If installing bottom mounting screw into wall stud, drill hole at marked location using 9/64" drill bit.

5. Replace heater on wall.

6. Insert bottom anchor screw through back panel into bottom anchor or drilled hole (see Figure 11).

7. Tighten screw 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 8 through 10).

Figure 11 - Installing Bottom Mounting Screw

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.

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

For propane/LP gas, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 12. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Installation must include equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13, page 9).

IMPORTANT:

location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

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 sealant that is resistant to liquid petroleum (LP) gas.

Install an equipment shutoff valve in an accessible

WARNING: A qualified service person must con-

nect heater to gas supply. Follow all local codes.

WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

IMPORTANT

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.

: For natural gas, check gas line pressure before

For more information, visit www.desatech.com

Propane/LP Supply Tank

Figure 12 - External Regulator With Vent Pointing Down (propane/LP systems only)

External Regulator

Vent Pointing Down

110720-01A

POSITIO

POSI

INSTALLATION

Continued

We recommend that you install sediment trap in supply line as shown in Figure 13. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. 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.

IMPORTANT:

necting it to gas piping and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could be damaged.

3/8" NPT Pipe Nipple

Ground Joint Union

Equipment Shutoff Valve*

Natural Gas

From Gas Meter (4" W.C. to 10.5" W.C. Pressure)

Propane/LP

From External Regulator (11" W.C. to 14" W.C. Pressure)

Figure 13 - Gas Connection

* A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessory, page 28.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

Hold pressure regulator with wrench when con-

Pressure Regulator

Heater Cabinet

Tee Joint

Minimum

Reducer Bushing to 1/8" NPT

1/8" NPT Plug Tap

Tee Joint

Pipe Nipple

Cap

Test Gauge Connection*

Sediment Trap

Connecting To Gas Supply (Cont.)

INSTALLATION

Checking Gas Connections

CAUTION: For propane/LP gas, make sure external regulator has been installed between propane/LP supply and heater. See guidelines under

to Gas Supply

, page 8.

Connecting

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.

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

1. Close equipment shutoff valve (see Figure 14).

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.

Equipment Shutoff Valve

Figure 14 - Equipment Shutoff Valve

Open

Closed

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

For more information, visit www.desatech.com

110720-01A

INSTALLATION

Checking Gas Connections (Cont.) Operating Heater (Manual Control Blue Flame Models) For Your Safety Read Before Lighting Lighting Instructions

INSTALLATION

Continued

3. Check all joints from gas meter for natural or propane/LP supply to equipment shutoff valve (see Figure 17 or 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 14, page 9).

2. Open main gas valve located on or near gas meter for natural gas or 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 control valve (see Figures 15 and 16). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Operating Heater pages 10 through 14). Check the rest of the internal joints for leaks.

7. Turn off heater (see To Turn Off Gas to Appliance, pages 11, 12 or 14, depending on your model).

8. Replace front panel.

Control Valve Location

Gas Meter

Equipment Shutoff Valve

OPERATING HEATER

MANUAL CONTROL BLUE FLAME

MODELS

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 be lighted by hand.

When lighting the pilot, follow these instructions exactly.

B. BEFORE LIGHTING smell all around the appliance ar ea

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’t try to repair it, call a qualified service technician or gas supplier. 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 a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

Figure 15 - Checking Gas Joints for Natural Gas

Propane/LP Supply Tank

Figure 16 - Checking Gas Joints for Propane/LP Gas

For more information, visit www.desatech.com

Control Valve Location

Equipment Shutoff Valve

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Make sure equipment shutoff valve is fully open.

3. Turn control knob clockwise

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 information, above. If y ou don’t smell gas, go to the next step.

5. Press in control knob and turn counterclockwise to the PILOT position. Keep control knob pressed in for five (5) seconds (see Figure 17, page 11).

Note:

You may be running this heater for the first time after hooking up to gas supply . If so, the control knob may need to be pressed in for 30 seconds or more. This will allow air to bleed from the gas system.

• If control knob does not pop up when released, contact a

qualified service person or gas supplier for repairs.

to the OFF position.

Clockwise

C-clockwise

110720-01A

+ 22 hidden pages