Wiring diagram Boiler house Level controls
2
MIN/MAX MIN/MAX PUMP
17 18 19 20 21 22
1
2
3
2.3 36
2 3 4 5 6 7
10
M 0.5 A (semi- delay)
(-) (+)
4
5
7
9
6
8
Item 1
Alarm 2 (MIN/MAX) output contact, de-energizing delay 3 seconds 2 Output contact (ON/OFF) for pump activation 3 Alarm 1 (MIN/MAX) output contact, de-energizing delay 3 seconds 4 Supply voltage connection 24 Vdc with semi-delay fuse M 0.5 A provided on site 5 Alarm 2 (MIN/MAX) probe tip 6 Pump low probe tip (see nameplate) 7 Functional earth in the LP10-4, LP11-4 or LP41 probe (tank or reference probe tip), with screen connection 8 Pump high probe tip (see nameplate) 9 Alarm 1 (MIN/MAX) probe tip 10 Central earthing point (CEP) in control cabinet
Fig. 4
How to specify ON-OFF level switch, 2 volt-free change-over contacts for MIN/MAX alarms, 1 volt-free relay contact for pump/valve control, supply voltage 24V DC 2W. How to order Example: 1 off Spirax Sarco LCS1350 level switch.
TI-P693-25 EMM Issue 1
Page 4 of 4
LCS1350 Level switch
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