23
®
Table 3:
NOTE: unless stated as minimum or maximum, timings are nominal values.
a: Minimum time
b: Maximum time
Table 7: EXPANDED TIMINGS TABLE
Times are in seconds BURNERPRO SERIES TIMINGS
TIMING DESCRIPTION S1S2S3S4S5S6
t1 Purge time 36 31 37 60 37 30
t3 Pre-ignition time (direct fired) 4 6 5 5 5 10
t3' Pre-ignition time (piloted) 4 6 2.5 2.5 2.5 1
TSA Ignition safety time (direct ignition) 2 3 2.5 2.5 2.5 1
TSA’ Ignition safety time (PTFI) 2 3 5 5 5 10
t4 Interval between voltage on Pilot/Main Fuel Direct and Main Fuel Piloted 10 11.5 12.5 12.5 12.5 5
t4' Internal between start of TSA and the main fuel piloted 10 11.5 15 15 15 15
t5 Interval between Main Fuel Piloted and release to Modulation 10 11.5 12.5 12.5 12.5 15
t6 Post-purge time 12 18 15 15 15 15
t7 Pilot stabilization period 8 8.5 10 10 10 5
t9 Interval between Main Fuel Piloted and removal of Pilot (MTFI) 2 3 5 5 5 10
t11 Air damper running time to the HIGH FIRE position OPTIONAL
t12 Air damper running time to the LOW FIRE position OPTIONAL
t13 Permissible afterburn time (Post-purge + 60s) 72 78 75 75 75 75
FFRT Flame Failure Response Time (FFRT) 1.0
b
4.0
b
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