L.B. White Premier CS700 Owner's Manual And Instructions page 21

Ignition Control
The control sends and receives voltages to operate or
verify operation of components. Refer to the following and
Fig. 22 to understand the ignition control's terminal
designators if doing voltage checks on the control.
L1: Main power supply voltage
IND: Main power supply voltage to motor relay
LED: Wire connection to red LED light
MV: 24 VAC from ignition control to gas control valve
PS0: 24 VAC return from air pressure switch
PSI: 24 VAC to air pressure switch
W: 24 VAC return from thermostat switch
FS: No terminal.
R: 24 VAC to thermostat switch
X: 24 VAC from transformer
C/COM: Earth ground
Also refer to "Operation Sequence" within this manual as
needed to understand operation of the ignition control
during a call for heat.
FIG. 22
Owner's Manual • Premier Ductable Heater
Premier Ductable Heater
Igniter Assembly
The igniter is mounted on the heat chamber panel.
FIG. 23
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. (3 mm). See Fig. 24.
FIG. 24
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
21
IGNITER
1/8 IN. (3 mm)