B Reposition rotary dial.
1
Fig. 4 Boiler water temperature controller
[1]
End stop tabs
4
Controls and programming unit
4.1
Control unit controls
Fig. 5 Control unit controls (delivered condition)
[1]
High limit safety cut-out
[2]
Boiler water temperature controller
[3]
Fuse F1
Fig. 6 Fitted modules
[1]
Slot 1, e.g. FM442/CMM 920 - heating circuit 1, heating circuit 2
[2]
Slot A: ZM422 - feed for external heat sources, heating circuit 0
CFB 840
6 720 803 704-04.1T
1
2
3
1
2
4
5
6
[4]
Connection for external service equipment and programmer
[5]
Burner emergency operation switch
[6]
On/Off switch
3
4
[3]
Slot B: Programmer (CM431) - programming unit
[4]
Slot 2, e.g. FM442/CMM 920 - heating circuit 3, heating circuit 4
Controls and programming unit | 7
6 720 803 704-05.1T
6 720 803 704-06.1T
6 720 802 836 (2012/05)
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