AUTOFLAME Mk8 MM User Manual

2 Options & Parameters
Mk8 MM Manual Page | 51
Opt. # Default Range Description
118
0
BC: Post-Purge Time
If set, a post-purge will occur after a normal burner shutdown. This time
set should allow for the servomotors to travel from low fire to purge
position. The flame is not checked during post-
purge. See option/
parameter 135 for NFPA post-purge. Time remaining for the post-purge
process to complete is displayed on the main MM screen.
0 – 100
Seconds (for option/ parameter 135 set to 0 or 2)
0 – 100
Minutes (for option/ parameter 135 set to 1 or 3)
119
10
BC: Control Box Recycle Time
This is the time delay between the burner shutting down, and going
through post-purge if optioned, and the burner starting up again.
3 – 120
Seconds
120
10
BC: UV Threshold
This is the minimum flame signal strength, if the flame strength is lower
than this threshold, a lockout will occur. The UV counts will stabilise at 5
times this value when increasing, and 3 times this value when decreasing.
5 – 50
UV counts
121
5
BC: Delay from Start of Pre-Purge until Air Switch Checked
This time delay where the air switch is not checked is included within the
total pre-purge time set in option/ parameter 112.
5 – 10
Seconds
122
0
BC: Flame Sensor Selection
0
UV
1
Flame Switch
2
IR
3
IR and UV
4
IR or UV
123
3
BC: Oil Second Safety Time – Main Trial For Ignition (MTFI)
This is the time period when the main valves are open and the pilot valve
is maintained open, before the flame is checked, for firing on
oil. See
option/ parameters 150 – 153. This does not apply for intermittent pilot,
see option/ parameter 111. For firing on gas, see option/ parameter 116.
3 – 15
Seconds
124
0
BC: Timeout on Reaching Purge
If the MM is stuck in Run to Purge or Run to Post-Purge because the
servomotors and VSDs are moving to the purge position, then a lockout
will occur after this timeout set in this option has elapsed. This does not
apply to any requirements on purge timing such as any additional proving
inputs.
0
Disabled
1 – 3600
Seconds

AUTOFLAME Mk8 MM Specifications

General

Brand	AUTOFLAME
Model	Mk8 MM
Category	Controller
Language	English