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Installation instructions, General – L.B. White AW250 User Manual

Page 7

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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. 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.

4. The heater may be used either indoors or outdoors.

When the heater is mounted outdoors, use only the

ductwork supplied in the outdoor mounting kit.

5. 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.

6. 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.

7. All gas pressure regulators must be installed in strict

accordance with the manufacturer’s safety instructions.

These instructions accompany each regulator.

8. 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.

9. 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.

10. Any heater connected to a piping system must have

an accessible, approved manual shut off valve

installed within six feet (6 ft.) of the appliance it

serves.

11. Check all connections for gas leaks using approved

gas leak detectors. Gas leak testing is performed as

follows:

-- 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.

WARNING

Fire oor eexplosion hhazard.

Can ccause pproperty ddamage, ssevere iinjury oor ddeath.

1. Disconnect power supply before wiring to prevent

electrical shock or equipment damage.

2. To avoid dangerous accumulation of fuel gas, turn off

gas supply at the heater service valve before starting

installation, and perform gas leak test after

completion of installation.

3. Do not force the gas control knob. Use only your

hand to turn the gas control knob. Never use any

tools. If the knob will not operate by hand, the

control should be replaced by a qualified service

technician. Force or attempted repair may result in

fire or explosion.

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.

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Installation Instructions

GENERAL