L.B. White 220 User Manual

Owner's Manual and Instructions

Therma Grow™ GreenhouseHeaters

MODELS

OUTPUT (Btuh)

FUEL

Available in either

HW220 220,000 L.P. Gas Vapor

Withdrawal or

Natural Gas

Configurations.

Congratulations!

You have purchased the finest agricultural building heater available.

Your new L.B. White heater incorporates the benefits from the most experienced manufacturer of heating products using state-of-the-art technology.

We, at L.B. White, thank you for your confidence in our products and welcome any suggestions or comments you may have...call us, toll-free, at [phone].

ATTENTION ALL USERS

This heater has been tested and evaluated by C.S.A. International, in accordance with IAS U.S. Requirements for Gas-Fired Greenhouse Heaters, for use as a direct gas-fired circulating heater for the heating of greenhouses. If you are considering using this product for any application other than its intended use, then please contact your fuel gas supplier, or the L.B. White Co., Inc.

150-27595

GENERAL HAZARD WARNING

■Failure to comply with the precautions and instructions provided with this heater, can result in:

—Death

—Serious bodily injury or burns

—Property damage or loss from fire or explosion

—Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning

—Electrical shock

■Read this Owner’s Manual before installing or using this heater.

■Only properly-trained service people should repair or install this heater.

■Save this Owner’s Manual for future use and reference.

■Owner’s Manuals and replacement labels are available at no charge. For assistance, contact L.B. White at 800-345-7200.

WARNING

■Proper gas supply pressure must be provided to the inlet of the heater.

■Refer to dataplate for proper gas supply pressure.

■Gas pressure in excess of the maximum inlet pressure specified at the heater inlet can cause fires or explosions.

■Fires or explosions can lead to serious injury, death, building damage, or loss of plant life.

■Gas pressure below the minimum inlet pressure specified at the heater inlet may cause improper combustion.

■Improper combustion can lead to asphyxiation or carbon monoxide poisoning and therefore serious injury or death to humans and plant life.

WARNING

Fire and Explosion Hazard

■Not for home or recreational vehicle use.

■Installation of this heater in a home or recreational vehicle may result in a fire or explosion.

■Fire or explosions can cause property damage or loss of life.

FOR YOUR SAFETY

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

FOR YOUR SAFETY

If you smell gas:

1.Open windows.

2.Don't touch electrical switches.

3.Extinguish any open flame.

4.Immediately call your gas supplier.

WARNING

Fire and Explosion Hazard

■Keep solid combustibles a safe distance away from the heater.

■Solid combustibles include wood or paper products, straw, and dust.

■Do not use the heater in spaces which contain or may contain volatile or airborne combustibles.

■Volatile or airborne combustibles include gasoline, solvents, paint thinner, dust particles or unknown chemicals.

■Failure to follow these instructions may result in a fire or explosion.

■Fire or explosions can lead to property damage, personal injury or loss of life.

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Table of Contents

SECTION

PAGE

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Installation Instructions

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Air Discharge Diverter Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Indoor Installation Requirements

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Exhaust Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Hanging the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Sediment Trap Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Thermostat Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Manual Shut-Off Valve, Hose and Regulator Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . .11

Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Service Instructions

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Motor & Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Air Proving Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Manual Reset High Limit Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Burner Orifice and Gas Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Igniter and Flame Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Troubleshooting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Electrical Connection and Ladder Diagram

115 Volt Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

230 Volt Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Parts Identification (Parts List & Schematic) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 & 28

Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

General Information

This Owner's Manual includes all options and accessories commonly used on this heater. However, depending on the configuration purchased, some options and accessories may not be included.

When calling for technical service assistance, or for other specific information, always have model number, configuration number and serial number available. This information is contained on the dataplate. The dataplate is located on the interior of either the burner end or motor end door.

This manual will instruct you in the operation and care of your unit. Have your qualified installer review this manual with you so that you fully understand the heater and how it

functions.

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The gas supply line installation, installation of the heater, and repair and servicing of the heater requires continuing expert training and knowledge of gas heaters and should not be attempted by anyone who is not so qualified. See page 6 for definition of the necessary qualifications. A detailed Installation and Service Guide is available, at no charge, to qualified personnel by contacting the local L.B. White distributor, dealer or the L.B. White Company.

Contact your local L.B. White distributor or the L.B. White Co., Inc. for assistance, or if you have any questions about the use of the equipment or its application.

The L.B. White Co., Inc. has a policy of continuous product improvement. It reserves the right to change specifications and design without notice.

									Heater Specifications
									Model
	SPECIFICATIONS								HW220
								Propane		Natural
								Gas		Gas
	Maximum Input (BTUH)								220,000
	Indoor Mounting Air					EXHAUST FAN			550 CFM
	Exchange Requirements (1)					SHUTTERED AIR INLET			220 sq. in.
	Outdoor Mounting Air					SHUTTERED			100 sq. in.
	Exchange Requirements (1)					EXHAUST OUTLET
	Inlet Gas Supply					MAX.		13.5		11.0
	Pressure Acceptable at
	the Inlet of the Heater
	for Purpose of Input					MIN.		11.0		7.0
	Adjustment (In. W.C.)
	Burner Manifold							5.0		3.1
	Pressure (In. W.C.)
	Fuel Consumption Per							10.19 lbs.		220 cu. ft.
	Hour
									Ball Bearing
	Motor Characteristics
									1/2 H.P.
									1,100 RPM
	Electrical Supply								115/60/1
	(Volts/Hz/Phase)								230/60/1
								115 VOLT MOTOR	17.1
						STARTING
	Amp Draw							230 VOLT MOTOR	6.7

CONTINUOUS OPERATION

115 VOLT MOTOR	6.2
230 VOLT MOTOR	2.6

	Dimensions (inches)			35 x 25 x 30
	L x W x H
			TOP	1 ft.
			SIDES	1 ft.
	Minimum Safe		BACK	1 ft.
	Distances From Nearest		BLOWER	6 ft. (1.83 m)
	Combustible Materials		OUTLET
			GAS	Propane Gas Supply — 6 ft. (1.83 m)
			SUPPLY	Natural Gas Supply — N/A

(1) Air inlets and exhaust outlets must be electromechanically operated and electrically interlocked with the heater to prevent heater operation if air inlet and exhaust outlet do not open when heating is required.

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Safety Precautions

WARNING

Asphyxiation Hazard

■Do not use this heater for heating human living quarters.

■Do not use in areas without proper air exchange. See air exchange requirements on page 4 or on heater’s dataplate.

■Exhaust fans, supply air inlets, or exhaust fan outlets must not be obstructed.

■Proper air exchange must be provided for either indoor or outdoor mount installations.

■Refer to the specification section and installation instructions of the heater’s Owner’s Manual, heater dataplate, or contact the L.B. White Company to determine air exchange requirements of the heater.

■Lack of proper air exchange will lead to improper combustion.

■Improper combustion can lead to carbon monoxide poisoning in humans leading to serious injury or death. Symptoms of carbon monoxide poisoning can include headaches, dizziness and difficulty in breathing.

FUEL GAS ODOR

LP gas and natural gas have man-made odorants added specifically for detection of fuel gas leaks.
If a gas leak occurs, you should be able to smell the fuel gas.
THAT’S YOUR SIGNAL TO GO INTO IMMEDIATE ACTION	!

■Do not take any action that could ignite the fuel gas. Do not operate any electrical switches. Do not pull any power supply or extension cords. Do not light matches or any other source of flame. Do not use your telephone.

■Get everyone out of the building and away from the area immediately.

■Close all propane gas tank or cylinder fuel supply valves, or the main fuel supply valve located at the meter if you use natural gas.

■Propane gas is heavier than air and may settle in low areas. When you have reason to suspect a propane leak, keep out of all low areas.

■Natural gas is lighter than air and can collect around rafters or ceilings.

■Use your neighbor’s phone and call your fuel gas supplier and your fire department. Do not re-enter the building or area.

■Stay out of the building and away from the area until declared safe by the firefighters and your fuel gas

supplier.

■FINALLY, let the fuel gas service person and the firefighters check for escaped gas. Have them air out the building and area before you return. Properly trained service people must repair the leak, check for further leakages, and then relight the appliance for you.

ODOR FADING -- NO ODOR DETECTED

■Some people cannot smell well. Some people cannot smell the odor of the man-made chemical added to propane or natural gas. You must determine if you can smell the odorant in these fuel gases.

■Learn to recognize the odor of propane gas and natural gas. Local propane gas dealers and your local natural gas supplier (utility) will be more than happy to give you a scratch and sniff pamphlet. Use it to become familiar with the fuel gas odor.

■Smoking can decrease your ability to smell. Being around an odor for a period of time can affect your sensitivity to that particular odor.

■The odorant in propane gas and natural gas is colorless and the intensity of its odor can fade under some circumstances.

■If there is an underground leak, the movement of gas through the soil can filter the odorant.

■Propane gas odor may differ in intensity at different levels. Since propane gas is heavier than air, there may be more odor at lower levels.

■Always be sensitive to the slightest gas odor. If you continue to detect any gas odor, no matter how small, treat it as a serious leak. Immediately go into action as discussed previously.

ATTENTION -- CRITICAL POINTS TO REMEMBER!

■Propane gas and natural gas have a distinctive odor. Learn to recognize these odors. (Reference Fuel Gas Odor and Odor Fading sections above.

■If you have not been properly trained in repair and service of propane gas and natural gas fueled heaters, then do not attempt to light heater, perform service or repairs, or make any adjustments to the heater on propane gas or natural gas fuel system.

■Even if you are not properly trained in the service and repair of the heater, ALWAYS be consciously aware of the odors of propane gas and natural gas.

■A periodic sniff test around the heater or at the heater’s joints; i.e. hose, connections, etc., is a good safety practice under any conditions. If you smell even a small amount of gas, CONTACT YOUR FUEL GAS SUPPLIER IMMEDIATELY. DO NOT WAIT!

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1.Do not attempt to install, repair, or service this heater or the gas supply line unless you have continuing expert training and knowledge of gas heaters.

Qualifications for service and installation of this equipment are as follows:

a.To be a qualified gas heater service person, you must have sufficient training and experience to handle all aspects of gas-fired heater installation, service and repair. This includes the task of installation, troubleshooting, replacement of defective parts and testing of the heater. You must be able to place the heater into a continuing safe and normal operating condition. You must completely familiarize yourself with each model heater by reading and complying with the safety instructions, labels, Owner’s Manual, etc., that is provided with each heater.

b.To be a qualified gas installation person, you must have sufficient training and experience to handle all aspects of installing, repairing and altering gas lines, including selecting and installing the proper equipment, and selecting proper pipe and tank size to be used. This must be done in accordance with all local, state and national codes as well as the manufacturer’s requirements.

2.All installations and applications of L.B. White heaters must meet all relevant local, state and national codes. Included are L.P. gas, natural gas, electrical, and safety codes. Your local fuel gas supplier, a local licensed electrician, the local fire department or similar government agencies, or your insurance agent can help you determine code requirements.Refer to the following:

--ANSI/NFPA 58, latest edition, Standard for Storage and Handling of Liquefied Petroleum Gas and/or

--ANSI Z223.1/NFPA 54, National Fuel Gas Code

--ANSI/NFPA 70, National Electrical Code.

3.Do not move, handle, or service heater while in operation or connected to a power or fuel supply.

4.This heater may be installed in areas subject to washdown. This heater may only be washed on the external case assembly—see Cleaning Instructions. Do not wash the interior of the heater. Use only compressed air, soft brush or dry cloth to clean the interior of the heater and it’s components. After external washdown, do not operate this heater until it is completely dry. In any event, do not operate the heater for at least one hour after external washdown.

5.For safety, this heater is equipped with a manual reset high-limit switch and an air proving switch. Never operate this heater with any safety device that has been bypassed. Do not operate this heater unless all of these features are fully functioning.

6.Do not operate the heater with its door open.

7.Do not locate fuel gas containers or fuel supply hoses anywhere near the blower outlet of the heater.

8.Do not block air intakes or discharge outlets of the appliance. Doing so may cause improper combustion or damage to heater components leading to property damage or plant loss.

9.The hose assembly shall be visually inspected on an annual basis. If it is evident there is excessive abrasion or wear, or if the hose is cut, it must be replaced prior to the heater being put into operation. The hose assembly shall be protected from animals, building materials, and contact with hot surfaces during use. The hose assembly shall be that specified by the manufacturer. See parts list.

10.Check for gas leaks and proper function upon heater installation, before building repopulation or when relocating.

11.This heater should be inspected for proper operation by a qualified service person before building repopulation and at least annually.

12.Always turn off the gas supply to the heater if the heater is not going to be used.

13.Heaters requiring 230 volts electrical supply must have electrical wiring consisting of two hot leads, a neutral lead, and a ground lead. All GreenGro heaters, regardless of voltage, must be properly connected to a grounded electrical supply. Failure to use a grounded electrical supply can result in electrical shock, serious injury, or death.

14.Direct ignition heaters will make up to three trials for ignition. If ignition is not achieved, the control system will lock out the gas control valve. If gas is smelled after system lock out has occurred, immediately close all fuel supply valves. Do not relight until you are sure that all gas that may have accumulated has cleared away. In any event, do not relight for at least 5 minutes.

15.In a hanging type installation, rigid pipe or copper tubing coupled directly to the heater may cause gas leaks during movement, and therefore must not be used. Use only gas hose assemblies that are rated and approved for L.P. gas and natural gas in a hanging type of installation.

16.Installations not using the gas hose supplied with this appliance must connect dimensionally using American National Standard Wrought Steel and Wrought Iron Pipe B36/10-1970. (Aluminum piping or tubing shall not be used.) Copper tubing when used for conveying natural gas, shall be internally tinned or equivalently treated to resist sulphur.

6

Installation Instructions

GENERAL

Direct fired heaters discharge combustion by-products with the heated air in to the area being heated. These include CO, CO2, NO, NO2, and Ethylene. These gases can result in harm to the worker or the plants.

This greenhouse heater has been specifically developed for very low levels of these combustion by-products. However, it is necessary to have an exchange of air within the greenhouse to avoid accumulation of these gases to a harmful level over an extended period of operating time.

Greenhouses have a natural air leakage factor. This natural leakage is influenced by the design and physical condition of the greenhouse as well as wind conditions and other factors. This natural leakage factor can not be relied upon as being sufficient to provide the necessary air exchange within the greenhouse. Proper installation of the GreenGro greenhouse heater must include provision for adequate air exchange as follows:

Indoor Mounted Heater:

--An exhaust fan capable of providing at least 550 cfm of discharge air.

--An inlet shuttered louver of at least 220 sq. in. area.

--The inlet shutters must be electromachanically operated and electrically interlocked with the heater such that the heater can not operate if the inlet shutters do not open when heating is required.

--Refer to Indoor Ventilation Requirements in this manual.

Outdoor Mounted Heater:

--An exhaust shuttered louver of at least 100 sq. in. area.

--The exhaust shutter must be electromechanically operated and electrically interlocked with the heater such that the heater can not operate if the exhaust shutters do not open when heating is required.

1.Read all safety precautions and follow L.B. White recommendations when installing this heater. If during the installation or relocating of heater, you suspect that a part is damaged or defective, call a qualified service agency for repair or replacement.

2.Make sure the heater is properly positioned before use and is hung level. Observe and obey all minimum safe distances of the heater to the nearest combustible materials. Minimum safe distances are given on the heater nameplate and on page 4 of this manual.

3.The heater may be used either indoors or outdoors. For heaters intended for outdoor installation, the heater is to be installed at least 18 inches above the ground or to a height that would prevent snow blockage of heater’s air inlet. Refer to instructions provided in the optional L.B. White outdoor mounting and ducting kit, part number 23579.

7

4.The heater must have the proper gas regulator installed for the application. A regulator must be connected to the gas supply so that gas pressure at the inlet to the gas valve is regulated within the range specified on the dataplate at all times. Contact your gas supplier, or the L.B. White Co., Inc. if you have any questions.

5.The heater’s gas regulator (with pressure relief valve) should be installed outside of building. Any regulators inside the buildings must be properly vented to the outside. Local, state and national codes always apply to regulator installation. Natural gas regulators with vent limiting device may be mounted indoors without venting to outdoors.

6.All gas pressure regulators must be installed in strict accordance with the manufacturer’s safety instructions. These instructions accompany each regulator.

7.Insure that all accessories that ship within the heater have been removed from inside of heater and installed. This pertains to air diverters, hose, regulators, etc.

8.Make certain that a sediment trap is installed at the gas valve inlet to prevent foreign materials (pipe compound, pipe chips and scale) from entering the gas valve. Debris blown into the gas valve may cause that valve to malfunction resulting in a serious gas leak that could result in a possible fire or explosion causing loss of products, building or even life. A properly installed sediment trap will keep foreign materials from entering the gas valve and protect the safe functioning of that important safety component.

9.Any heater connected to a piping system must have an accessible, approved manual shut off valve installed within six feet (6 ft.) of the heater it serves.

10.Check all connections for gas leaks using approved gas leak detectors. Gas leak testing is performed as follows:

WARNING

Fire and Explosion Hazard

■Do not use open flame (matches, torches, candles, etc.) in checking for gas leaks.

■Use only approved leak detectors.

■Failure to follow this warning can lead to fires or explosions.

■Fires or explosions can lead to property damage, personal injury or loss of life.

--Check all pipe connections, hose connections, fittings and adapters upstream of the gas control with approved gas leak detectors.

--In the event a gas leak is detected, check the components involved for cleanliness and proper application of pipe compound before further tightening.

--Furthermore tighten the gas connections as necessary to stop the leak.

--After all connections are checked and any leaks are stopped, turn on the main burner.

--Stand clear while the main burner ignites to prevent injury caused from hidden leaks that could cause flashback.

--With the main burner in operation, check all connections, hose connections, fittings and joints as well as the gas control valve inlet and outlet connections with approved gas leak detectors.

--If a leak is detected, check the components involved for cleanliness in the thread areas and proper application of pipe compound before further tightening.

--Tighten the gas connection as necessary to stop the leak.

--If necessary, replace the parts or components involved if the leak cannot be stopped.

--Ensure all gas leaks have been identified and repaired before proceeding.

11.A qualified service agency must check for proper operating gas pressure upon installation of the heater.

12.Light according to instructions on heater or within owner's manual.

13.It is extremely important to use the proper size and type of gas supply line to assure proper functioning of the heater. Contact your fuel gas supplier for proper line sizing and installation.

14.This heater can be configured for use with either L.P. gas vapor withdrawal or natural gas. Consult the

dataplate for the gas configuration of the specific heater. Do not use the heater in an L.P. gas liquid withdrawal system or application. If you are in doubt, contact the L.B. White Co., Inc.

15.Eventually, like all electrical/mechanical devices, the thermostat can fail. Thermostat failure may result in either an underheating or overheating condition which may damage or kill plants. Plants should be protected by a separate back-up control system that limits high and low temperatures and also activates appropriate alarms.

16.Take time to understand how to operate and maintain the heater by using this Owner’s Manual. Make sure you know how to shut off the gas supply to the building and also to the individual heater. Contact your fuel gas supplier if you have any questions.

17.Any defects found in performing any of the service or maintenance procedures must be eliminated and defective parts replaced immediately. The heater must be retested by properly qualified service personnel before placing the heater back into use.

18.Do not exceed input rating stamped on the dataplate of the heater. Do not exceed the burner manifold pressure stated on the dataplate. Do not use an orifice size different than specified for the specific input rating of this heater, fuel type configuration and altitude.

1.The air discharge diverter duct provides improved directional air flow and greater heat throw, beneficial in heating long houses. Use the duct only on indoor mounted heaters. Do not use the diverter when the heater is mounted outside the green house. The diverter duct requires hand forming prior to assembly. Make 90 degree bends utilizing the performations provided. Assemble as shown in Fig. 1.

FIG. 1

PERFORATIONS

VANES

MUST BE

DIRECTED

DOWNWARD

SCREWS

FROM KIT

PERFORATIONS

AIR DISCHARGE DIVERTER DUCT

Part Number 25977 (Accessory)

2.Remove the upper and lower screws at both sides of the blower outlet, and the two screws at outlet top.

3.Install flanges as shown in Fig. 2, using the same screws. Tighten the screws securely.

4.Position the diverter over the flanges. Align holes in diverter to flange holes and to vacant holes at top and bottom of blower outlet.

5.Fasten the diverter to the flanges with the screws provided. See Fig. 3.

FIG. 2

FIG. 3

SCREWS REMOVED AT OUTLET TOP

UPPER

SCREW

LOWER

SCREW

8