HAMWORTHY HEATING LTD
MILBORNE 500 SERIES
500001130/A
26
Fig 13.3 Example of boiler installation consisting 7 boiler modules in same cascade sequence.
Block 1
1
2
ON
OFF
1
2
3
4
ON
OFF
Boiler module 1
1
2
ON
Block 1
1
2
3
4
ON
OFF
Boiler module 2
Block 1
1
2
ON
OFF
1
2
3
4
ON
OFF
Boiler module 3
1
2
ON
OFF
Boiler module 4
1
2
3
4
ON
OFF
Block 1
Block 2
1
2
3
4
OFF
2
ON
OFF
ON
Boiler module 1
1
Block 2
1
2
3
4
OFF
1
2
ON
OFF
ON
Boiler module 2
Block 2
1
2
3
4
OFF
1
2
ON
ON
Boiler module 3