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Building Technologies Division CC1N7451en
20.11.2017
Legend (cont’d)
Lockout position indication when there is no input signal (see Control sequence in the event of faults):
◄
No start
▲
Startup interruption
▼
Startup interruption
■
Lockout (disturbance in the flame supervision circuit)
1
Lockout (no flame)
2
Lockout (no flame)
P
Lockout (no air pressure)
I
Lockout
Time table
TSA Ignition safety time
TSA´ Ignition safety time or first safety time (startup with burners using pilot burners)
t1 Prepurge time with air damper open
t3 Preignition time
t3’ Preignition time (long)
t4 Interval between voltage at terminals 18 and 19
t4´ Interval between start of TSA´ and release of valve at terminal 19
t5 Interval between power at terminals 19 and 20
t6 Postpurge time (with «M2»)
t7 Interval between start command and power at terminal 7 (start delay for «M2»)
t8 Duration of startup sequence (without «t11» and «t12»)
t9 Second safety time with burners using pilot burners
t10 Interval from start to the beginning of the air pressure check, excluding running time of air damper
t11 Air damper running time to the OPEN position
t12 Air damper running time to the low-fire position MIN
t13 Permissible afterburn time
t16 Interval until OPEN command for the air damper is given
t20 Interval to the self-shutdown of the sequence switch after startup
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