AUTOFLAME Mk8 MM User Manual

2 Options & Parameters
Mk8 MM Manual Page | 42
Opt. # Default Range Description
40
0
DTI: Warming Facility for Low Pressure Steam
For sequencing applications where non-return valves are not installed, it is
not possible to use a setpoint to keep the boilers in a standby condition. A
thermostat (aquastat) can be installed into the boiler’s shell. Set option/
parameter 79 to 0 to enable terminal 93 for warming stat. An input on
terminal 93 stops/inhibits the burner when the MM is in warming. The
boiler will remain in a warming state based on the settings in options 53
and 54.
0
Steam sequencing with non-return valves
1
Steam sequencing without non-return valves
41
0
DTI: Warming Mode
For setting 0, the first lag is kept in a standby state with the second lag in
warming, and the remaining lag boilers off. For setting 1, the first lag boiler
is in standby, and the remaining lag boilers are in warming.
0
One MM in warming state
1
All unused MMs in warming state
42
20
DTI: Standby Setpoint
For sequencing applications where non-return valves are installed, the first
lag boiler uses a standby setpoint to keep the boiler in a standby condition.
The standby setpoint is set as an absolute value in this option. When the
standby setpoint is in effect, the burner is held at low flame hold.
5 – 9990
O
C,
O
F, PSI or 0.1 bar or 0.01 bar for low pressure sensor (depends on
load detector set in option 1 and metric/imperial units set in parameter 40)
43
0
MM: Multi-Burner Function
The multi-burner function can be used for up to 10 burners, allowing the
firing rates to be synchronised for all the burners in the multi-burner loop.
For setting 1, if an error or lockout occurs on a burner, all of the other
burners will shut down; setting 1 is suitable for firetube boilers. For setting
2, if an error occurs on a burner, all of the other burners will shut down,
however if a lockout occurs, the other burners will continue to fire; setting
2 is suitable for watertube boilers. Fuel flow meter
ing must be
commissioned accurately for the multi-burner function to operate. Please
refer to section 8 for commissioning of the multi-burner function.
0
Disabled
1
Fully linked
2
Independent on Fault
44
1
MM: Multi-Burner ID
When using the multi-burner function, the multi-burner IDs must be set on
the MMs This option should be set to 1 for the master, and 2 onwards for
the slave MMs.
1 – 10
Multi-Burner ID
45
0
MM: External Modulation
When enabled, the internal PID control is disabled and the firing rate is set
by an external controller applied to the appropriate input terminals 7, 8, 9.
This input control signal can be 0-10V (2-10V) or 4-20mA (0-20mA) set
through parameter 69, and represent zero/ low to
high fire by setting
parameter 68. A manual reset high limit stat must be fitted. For setting 1,
an external working stat is required and option 9 should be set to 0. For
setting 2, option 9 should be set to 1 or 2.
0
Disabled
1
Enabled, load sensor not shown
2
Enabled, load sensor shown
3
Firing Rate Limiter

AUTOFLAME Mk8 MM Specifications

General

Brand	AUTOFLAME
Model	Mk8 MM
Category	Controller
Language	English