AUTOFLAME Mk8 MM User Manual

2 Options & Parameters
Mk8 MM Manual Page | 44
Opt. # Default Range Description
53
0
DTI: Steam Sequencing Burner Off Time
When the MM is in warming mode, it will warm to the standby setpoint
according to the on and off times set in options 53 and 54.
0
Disabled
1 – 200
Minutes
54
5
DTI: Steam Sequencing Burner On Time
When the MM is in warming mode, it will warm to the standby setpoint
according to the on and off times set in options 53 and 54.
1 – 30
Minutes
55
0
MM: Terminal T88 Function
This options selects the function of terminal 88, see options16 and 45. For
setting 0, a line voltage input on terminal 88 is used to select the lead
boiler in sequencing, and overrides the DTI lead boiler select. For setting
1, a line voltage input on terminal 88 is used to select the external
modulation signal and 0V for internal PID. Setting 2, a line voltage input on
terminal 88 is used to select firing rate limiter (set in option 66 and 45)
0
T88 selects Lead Boiler
1
T88 selects External Modulation
2
T88 selects Firing Rate Limiter
56
0
MM: Alarm Output Operation (Terminal #79)
This is a switched neutral output to select how the alarm function
operates.
0
Relay normally off, on during alarm
1
Relay normally on, off during alarm
57
0
MM: Fuel Flow Metering
Fuel flow metering determines the firing rate. If no fuel flow meter is
available, a ‘dummy curve’ should be entered using the burner turndown
ratio from the burner rating to determine the low fire point, and the burner
rating for the high fire point. If enabled, fuel flow metering is initiated once
the burner has been commissioned and is firing. The MM will drive up to
the high fire point first, and then go down the curve. For setting 2, see
options 59 and 60. If using setting 2 for fuel flow feedback, then 4-20mA
signal is required on terminals EX- and EX+ on the expansion board (this
cannot be enabled with external level sensor nor fully metered combustion
control, see expansion option 4). For metric units, fuel flow is
commissioned in MW for metric units and MMBTU/hr for imperial units.
0
Disabled
1
Enabled
2
Enabled with 4-20mA feedback
58
-
Unused
59
100
MM: Fuel Flow at Maximum Feedback
This will set the fuel flow value at 20mA feedback, see option 57.
1 – 10000
0.01MW – 100.0 MW
60
0
MM: Fuel Flow Feedback Fault Tolerance
The fuel flow feedback fault tolerance allows an upper limit to be set on
the fuel flow when option 57 is set to 2. If the fuel flow exceeds this limit for
5 seconds, then a warning will appear.
0
Disabled
1 – 500
0.1% - 50.0% of high-fire fuel flow

AUTOFLAME Mk8 MM Specifications

General

Brand	AUTOFLAME
Model	Mk8 MM
Category	Controller
Language	English