Shut-Down Instructions - L.B. White Premier CS350DF 2.0 Owner's Manual And Instructions

Do not exceed input rating stamped on name-
•
plate or manufacturer's recommended burner
orifice pressure for size orifice(s) used. Make
certain that the primary air supply to main burner
is open and free of dust, dirt and debris for
complete, proper combustion.

Shut-Down Instructions

If the heater is to be shut down for cleaning, mainte-
nance, or repair, follow steps 1-5. Otherwise, set the ther-
mostat below room temperature for standard shut-down.
Do not shut the heater off by the selector
switch. Doing so will remove power to the
heater, preventing cooling of heat cham-
ber. The burner end high limit switch will
trip.
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 below room temperature. When
the thermostat cycles the burner off, the
fan motor will continue to run for 1 min-
ute, allowing the heat chamber to cool.
After 1 minute, the fan motor will shut off.
4. Position selector switch to off O
5. Disconnect the heater from its gas and electrical
supplies.
Gas Selector Valve
The heater is shipped from the factory with the fuel
selector valve in the propane gas (LP) position.
Ensure the fuel selector valve's handle is properly
positioned for the fuel being used.
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. 14 and 15. The valve handle must
be properly positioned for the specific gas being
used, otherwise the unit will overheat or underheat.
Premier Ductable Heater
FIG. 14
Handle
position
LP Gas
FIG. 15
Handle
position
Natural
3. The handle must be fully set at 90 degrees to gas flow
(propane gas) or parallel to gas flow (natural gas) for
proper operation. Do not operate the heater with the
valve handle set between either postion, otherwise
improper operation will occur.
Owner's Manual • Premier 350DF 2.0
Gas
15