Spirax Sarco BC3250 - 5.3 Blowdown Valve Wiring Notes

IM-P403-89 EMM Issue 8
27
5.3 Blowdown valve wiring notes:
Note: The protective earth must be connected in accordance with National or
Local regulations
Solenoid valve
(BCV1, BCV20 or BCV31)
1 2 3 4 5 6 7 8 9 10 11
Alarm 1 relay Control relay
L N
3 A
Fuse
L
1 A
Fuse
N
Alarm
Norm
Input
3 A
Fuse
BACK
FRONT
Open
Input
3 A Fuse
N
Fig. 18 BCV30 230 / 115 Vac blowdownvalve
Caution
live
terminal
AC supply Burner
supply
Fig. 19 BCV1, BCV20 or BCV31 solenoid valves
See Section 5.2 Mains wiring notes
Link
Link
BCV30 230 / 115 Vac Blowdown valve
3 4 5 3 4 5
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
N
N Y1 Y2 22
Caution
live
terminal
AC supply
Burner
supply
C2C1
See Section 5.2 Mains wiring notes
Viewed from the underside, relays are shown in the power off position