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Shut-down instructions, Gas selector valve – L.B. White 350 Premier Dual Fuel User Manual

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If the heater is to be shut down for cleaning, maintenance,

or repair, follow steps 1-5. Otherwise, set the thermostat to

OFF or NO HEAT for standard shut-down.

1. Close the gas supply valve.

2. Allow the heater to burn off any fuel gas remaining in

the gas supply line.

3. Set the thermostat to OFF or NO HEAT.

4. Position selector switch to OFF

5. Disconnect the heater from its gas and electrical

supplies.

Note: When the thermostat cycles the burner off, the fan

motor will continue to run for 1 minute, allowing the

heat chamber to cool. After 1 minute, the fan motor

will shut off.

Shut-Down Instructions

1. This feature allows the heater to operate on either

propane or natural gas without changing out the

burner orifice. The gas selector valve is located

between the gas control valve and the burner. Gas

selection is made by repositioning the valve’s handle.

THIS IS NOT A MANUAL GAS SHUT OFF VALVE.

2. Refer to Figs. 10 and 11. The vvalve hhandle m

must bbe

properly ppositioned ffor tthe sspecific ggas bbeing uused.

FIG. 10

FIG. 11

3. The hhandle m

must bbe ffully sset aat 9

90 ddegrees tto ggas

flow ((propane ggas) oor pparallel tto ggas fflow ((natural ggas)

for pproper ooperation. Do not operate the heater with

the valve handle set between either postion,

otherwise improper operation will occur.

4. The valve’s handle can be locked to prevent improper

positioning. Use the holes provided on the valve’s

body and handle. See Fig. 12.

FIG. 12

Gas Selector Valve

HANDLE POSITION

PROPANE GAS

HANDLE POSITION

NATURAL GAS

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