AUTOFLAME MK8 User Manual

9
Burner Start-Up Sequence
Flame Safeguard (MM80001/FSG) Manual
Page | 127
9.10 Proving
Figure 9.10.i Main Flame Proving
The 2
nd
safety time begins, where the flame is checked in the Intermittent Pilot 2
nd
Safety phase shown in Figure
7.10.i.
The 2
nd
safety time is the period where the pilot/main valves overlap. The outputs of the main gas valves 1 and 2 are
switched on (opened), while the pilot valve output is maintained on (opened). This 2
nd
safety time allows the main
flame to light prior to the pilot valve output being switched off (closed). See option/parameter 116. If the flame is not
strong enough, the lockout ‘No Flame Signal’ will occur.
If no voltage is detected when the burner main gas valve 1 output T60 should be on (and vice versa), the lockout
‘Main Gas 1 Output Fault’ will occur.
If no voltage is detected when the burner main gas valve 2 output T61 should be on (and vice versa), the lockout
‘Main Gas 2 Output Fault’ will occur.
The CPI/POC input T55 is now no longer checked through the firing cycle.

AUTOFLAME MK8 Specifications

General

Brand	AUTOFLAME
Model	MK8
Category	Controller
Language	English