Item
Test Item
3.3.1
3.3.1-1
3.3.1-2
3.3.1-3
3.3.1-4
3.3.1-5
3.3.1-6
3.3.1-7
3.3.1-8
3.3.1-9
TIMING
Pre-heat timing 1 (T1)
Pre-heat timing 2 (T2)
Pre-heat timing 3 (T3)
Pre-purge timing (T5)
Fan Motor delay timing
(T6)
Safety timing when started
(T7)
Initial state timing (T8)
Forced Med.-High burning
timing (T9)
Forced High burning timing
(T10)
Specifications
SRE 156
SRE 166
40
±
3 sec.
90
±
8 sec.
150
±
10 sec.
10
±
2 sec.
13
±
2 sec.
40
±
3 sec.
150
±
10 sec.
40
±
3 sec.
110
±
10 sec.
20
±
3 sec.
SRE 176
SRE 250
SRE 260
40
±
3 sec.
90
±
8 sec.
150
±
10 sec.
10
±
2 sec.
13
±
2 sec.
40
±
3 sec.
150
±
10 sec.
40
±
3 sec.
110
±
10 sec.
20
±
3 sec.
50
±
4 sec.
150
±
10 sec.
210
±
15 sec.
10
±
2 sec.
13
±
2 sec.
40
±
3 sec.
150
±
10 sec.
200
±
15 sec.
(forced Med.
burning timing)
- - -
- - -
60
±
5 sec.
150
±
10 sec.
180
±
10 sec.
10
±
2 sec.
13
±
2 sec.
50
±
4 sec.
150
±
10 sec.
150
±
10 sec.
(forced Med.
burning timing)
- - -
- - -
Remarks.
Burner Thermistor < Pre-heat
shorted resistance (See 3.3.4-1)
Room Thermistor
≥
6 ˚C (See
3.3.3-6), Burner Thermistor
≥
Pre-heat shorted resistance (See
3.3.4-1)
Room Thermistor < 6˚C (See
3.3.3-6) At ignition of timer
operation. However, at pre-heat
timing 2 and 3, when Burner
Thermistor after pre-heat timing 1
does not exceed pre-heat
shortened resistance, ignition
starts.
Burner Thermistor detects pre-
heat shortened resistance.
Max.
Min.
Unless Main Circuit Board detects
Secondary Flame Rod at forced
Med.-High burning timing, it
performs High burning until it
detects the secondary flame.
However, it takes at least 20 sec.
to change burning mode after
Secondary flame is detected.
Unless the flame is detected
within 110 sec., Main Circuit
Board displays E-9 and stops
because of an error.
3.3 SPECIFICATIONS.
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