Spirax Sarco BC3150 - Page 23

IM-P403-88 AB Issue 5
23
Fig. 14 Mains circuit
Control relayAlarm 1 relay
Back
Front
1 A
fuse
LINK
See Section 5.2
Mains wiring notes
3 A
fuse
Input
Norm
L N
N
Solenoid valve
(BCV1, BCV20, or BCV31)
3 4 5
LNL
Alarm
3 A
fuse
3 A
fuse
(BCV30 230 / 115 Vac)
Blowdown valve
N Y1 Y2 22
LINK
C1
C2
Burner
supply
ac
supply
Caution
Live
Terminals
Note: The protective earth must be connected in
accordance with National or Local regulations.
N
Input
open
3 4 5
1 2 3 4 5 6 7 8 9 10 11
View from the underside -
relays are shown in the power off position