AUTOFLAME Mk8 MM User Manual

16 Heat Flow
Mk8 MM Manual Page | 291
16.7 Spare Temperature Sensor
Spare Temperature Sensor features allows an addition temperature sensor to be used for monitoring either
the exhaust temperature or the coil / tubes temperature on a boiler. This feature also allows the setup of a
temperature threshold for that sensor where the burner shuts down if this threshold is reached.
To use the Spare Temperature Sensor feature, the Heat Flow Metering expansion feature must be unlocked.
16.7.1 Configuration Options
The table below shows the expansion features relevant to the spare temperature senor feature.
16.7.2 Spare Temperature Sensor Terminal
The use of the spare temperature sensor is governed by expansion option 120.
Heat flow function - Expansion Option 120
If steam flow metring is not used then expansion option 120 can be set to 12 – spare temperature senor
only. If a spare temperature sensor is required with steam flow metring, please see the table below for the
possibility and the sensor number used for this function.
#
Setting
Spare Temperature Sensor Used
1
Steam Flow with default values
T3
2
Steam Flow
T3
3
Steam Flow with Economiser
T3
4
Steam flow with Deaerator
T2
6
Steam flow with Deaerator and Feed Sensor
N/A
7
Hot Water Flow with Default Values
N/A
8
Hot Water Flow
N/A
9
Hot Water Flow with Economiser
N/A
10
Steam Flow from Feed Water Meter
T3
11
Steam Flow from Feed Water Meter and Feed Sensor
T3
12
Spare Temperature Sensor Only
T3
A standard Autoflame temperature sensor can be used as a spare sensor, please refer to the Autoflame
Sensors Manual.
# Default Range Description
130
0
Temp: Spare Temperature Sensor Function
0
Disabled
1
Coil Temperature
2
Exhaust Gas Temperature
131
0
Temp: Spare Temperature Shutdown Threshold
When this threshold is reached, the burner will shutdown and an alarm is
triggered and the burner shuts down. The temperature has to drop below
the threshold to allow the user to reset this alarm.
0
Disabled
1 – 2000
Degree °C

AUTOFLAME Mk8 MM Specifications

General

Brand	AUTOFLAME
Model	Mk8 MM
Category	Controller
Language	English