28
Servicing should only be performed by a Qualified Service Technician
IGNITION CONTROL
Each heater is equipped with an ignition control. The solid state ignition control, ignites the burner by utilizing a
spark igniter. The spark igniter shuts off during the heating cycle and the burner flame is sensed through a remote
flame sensor.
The ignition control will try to ignite the burner three times before lockout. The control waits 15 minutes before
trying again to ignite the burner. This is a continuous cycle.
This is a 24 VAC ignition control. The microprocessor circuit design provides precise, repeatable timing and
operating sequences. The on-board diagnostics with LED output make troubleshooting easy and ensures
safe and efficient operation.
WIRING TERMINALS
TERMINAL
DESCRIPTION
TH/W
Thermostat Input
PV1
Gas Valve Power
MV1
VFD High Speed Signal
V2
Valve Ground
GND
System Ground
S1
Remote Flame Sensor
HV
High Voltage Output
Summary of Contents for SBL85275NE
Page 2: ......