Spirax Sarco BC3250 - Page 31

IM-P403-89 EMM Issue 8
31
Fig. 23 BCVxx Blowdown Valves with 100-110 Vac / 230 Vac Supply 1 cable / 2pt
20 21 22
Bottom
blowdown
relay
Input
Open
* Must be common to both connection ends
1 2 3 4 5 6 7 8 9 10 11
Alarm 1 relay Control relay
3 A
Fuse
L
1 A
Fuse
N
Alarm
Norm
Input
3 A
Fuse
BACK
FRONT
Open
Input
3 A Fuse
Caution
live
terminal
AC supply Burner
supply
BCV4x,6x,7x & 8x
Optional Limit Switch
2a valve opening
2b valve closing
Module 230V
N (Neutral) *
100-110 Vac / 230 Vac
Limit Switch Box
4 5 6 7 8 9
S2 ( Xs2 )
Valve Closing
S1 ( Xs1 )
Valve Opening
2b 2a 21 N