L.B. White 170 Dual Fuel - Manual (Page 13)

14 13
1. Connect the electrical cord to an approved electrical
outlet.
A selector switch located on the back of the heater
allows heater operation in either HEAT or VENT (no
heat) modes. See Fig. 15.
A. Heat Mode Operation
a. Open all manual fuel supply valves. Check for gas
leaks using an approved leak detector. The gas
control valve in the heater has a manual shut-off
feature incorporated into the valve assembly.
Ensure the indicator on the valve is positioned to
ON. See Fig 12.
FIG. 12
b. Push the selector switch to HEAT.
c. Set the thermostat above room temperature
-- The fan motor will start
-- Igniter will spark
-- Ignition occurs
d. The thermostat cycles the heater on and off based
on set point.
(It is normal for air to be trapped in the gas hose on
new installations. The heater may attempt more than
one trial for ignition before air is finally purged from
line and ignition takes place.)
FIG. 13
When the switch is set to HEAT, four status lights (See
Fig. 13) will be activated in sequence as specific
circuits within the heater are checked by the ignition
control. If the heater does not light and a status light
is off, refer to the troubleshooting label on the inside
of the heater’s burner end access door or the
troubleshooting section in this manual.
B. Vent Mode Operation
-- Push the selector switch to OFF, then to VENT.
-- Only the fan motor will operate. The igniter will
not spark,nor will ignition occur.
The VENT feature is used when air circulation is
required. The heater will not cycle on its thermostat
setting. To discontinue ventilation, position the switch
to OFF or HEAT.
C. Off
Position the switch to midpoint.
2. Do not exceed input rating stamped on nameplate or
m a n u fa c t u r e r ’ s r e c o m m e n d e d b u r n e r o r i f i c e
pressure for size orifice(s) used. Make certain that
the primary air supply to main burner is open and
free of dusk, dirt and debris for complete, proper
combustion.
Start-Up Instructions
STATUS
GAS VALVE
AIR PROVING
TRANSFORMER
POWER
SELECTOR
SWITCH
For normal shut-down, set the thermostat below room
temperature. When servicing or performing maintenance,
follow steps 1 - 5.
1. Close the fuel supply valve.
2. Allow the heater to burn off any fuel gas remaining in
the gas supply line.
3. For heaters so equipped, set the thermostat to “Off”
or “No Heat”.
4. Position selector switch to “Off.”
5. Disconnect the heater from its gas and electrical
supplies.
Shut-Down Instructions