IPSO DR50 - Manual (Page 25)

Page 25
DIRECT SPARK
IGNITION OPERATION
FLOW CHART
The DSI module is powered by a 24 volts AC suppled by a step-down trans-
former in series with eight safety interlocks:
A. Timer switching device (1)
B. Main door and lint door switches (2)
C. Sail switch (1)
D. Under basket and burner housing thermal safety switches (2)
E . Variable thermostat (1)
F . Push to start switch (1)
THERMOSTAT
CALLS FOR HEAT
IGNITION CYCLE
BEGINS, GAS VALVE
O N
MAIN BURNER
FLAME DETECTED
CONTROL LOC-OUT
RESET POWER
REQUIRES A
MANUAL RESET
(Opening/closing door,
power switch ON/OFF)
SPARK IGNITION
OFF FLAME MONI-
TOR ON GAS VALVE
O N
FLAME IS LOST DUE
TO POWER OUTAGE,
DOOR OPEN
N O
YES
N O
FLAME IS ON UNTIL
THERMOSTAT OR
TIMER IS SATISFIED
YES