Fig.2
OFF
ON
ON
OFF
No Detect
Detect
No Detect
LOST FLAME
IGNITION FAILURE
TIME CHART : MODEL SRE 250
RTH
≥
6
°
C
BTH
≥
100 k
Ω
RTH
≤
6
°
C
3
3
2
3
2
3
2
3
2
5
3
3
2
5
3
3
2
5
E-2
E-2
4
4
4
T2
T7
T3
T7
T7+T35
T30
Fuel Pump
4
:
High
3
:
Med - High
2
:
Med
1
:
Med - Low
5
:
Full
4
:
High
3
:
Med - High
2
:
Med
1
:
Med - Low
L
:
Low
4
:
High
3
:
Med - High
2
:
Med
1
:
Med - Low
Circulation Fan Motor
Blower Motor
Operation Switch
Timer Switch
Tip-over Switch
High Limit Switch
Fueling
Primary
Flame Rod
Room
Thermistor
Burner
Thermistor
Operation Lamp
Timer Lamp
Fuel Lamp
Ventilation Lamp
Timer Clock
Lamp
Igniter
Deodorizing
Pump
Blower Motor
Circulation
Fan Motor
Buzzer
Display
Fuel Pump
Note : This time chart will vary according to set condition.
-39-