L.B. White Premier CS350DF 2.0 Owner's Manual And Instructions page 21

Igniter Assembly
The igniter is mounted on the heat chamber panel.
FIG. 26
1. Disconnect the high voltage ignition lead from the
igniter.
2. Remove the two screws securing the igniter to
the sheet metal panel.
3. Igniter gap should be 1/8 in. (0.318 cm). See Fig.
27.
FIG. 27
The igniter and ground rod should be cleaned during routine
maintenance to maintain proper ignition.
-- Use steel wool or emery cloth.
-- Rub briskly to remove buildup of dust, dirt,
and oxide.
■ Check the igniter's ceramic base for cracks.
-- Replace the igniter if cracks are found.
Manual Reset High Limit
Switches
Igniter
1/8 IN. (0.318 cm)
Owner's Manual • Premier 350DF 2.0
Premier Ductable Heater
WARNING
Burn Hazard
■ Do not operate the heater with the high limit
switch bypassed.
■ Operating the heater with the hight limit
switches bypassed may lead to overheating,
possibly resulting in a fire, with subsequent
damage to the heater or property damage.
This heater has two high limit switches. One is located
at the burner end of the heater on the heat chamber.
See Fig. 28. The other is located on the motor end
above the fan motor. See Fig. 29.
FIG. 28
High
switch
FIG. 29
High
limit
switch
Their purpose is to de-energize the gas control valve if
the heater should overheat.
Burner end high limit: Protects the burner and
associated wiring from overheating caused by excessive
gas pressure.
limit
21