L.B. White Premier TS350DF Owner's Manual And Instructions page 21

Igniter Assembly
The igniter is mounted on the heat chamber panel.
FIG. 24
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. See Fig. 25.
FIG. 25
1/8 IN. (0.318 cm)
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.
-- Replace the igniter if cracks are found.
Igniter
Igniter lead
Owner's Manual • Premier 350
Premier Ductable Heaters
Manual Reset High Limit
Switches
WARNING
Burn Hazard
switch bypassed.
may lead to overheating, possibly resulting in a
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. 26. The other is located on the fan housing end
above the fan motor. See Fig. 27.
FIG. 26
High
limit
switch
FIG. 27
High
limit
switch
Their purpose is to safely shut the heater down if the
heater should overheat.
Burner end limit: Protects the burner and associ-
ated wiring from overheating caused by excessive gas
pressure.
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