L.B.White Premier 350 DF Manual Del Usuario E Instrucciones página 15

• 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,
maintenance, or repair, follow steps 1-5. Otherwise, set
the thermostat 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 chamber. 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 minute, 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.
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 Heaters
FIG. 14
Handle
position
LP gas
FIG. 15
Handle
position
Natural
Gas
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 350 2.0
15