30
3-4
3-5
3-6
INS
TALLER
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MAINTEN
AN
CE TECHNI
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3.4 D.H.W. PUMP BOILER AND TANK PROBE WIRING DIAGRAM.
3.5 COMMON FLOW PROBE AND 3-WAY BOILER WIRING DIAGRAM.
3.6 SIMPLE CASCADE BOILER WITH D.H.W. PUMP AND TANK PROBE WIRING DIAGRAM.
Key:
B1 -System flow probe (NTC)
B2 -Domestic hot water probe (NTC)
B4 -External probe
M2 -Plant CH pump
M3 -Domestic hot water pump
Note (probe B1, B2, B4):
Connection cable diameter 3÷7 mm
Cable section 0.5 ÷ 1.5 mm
“IT” - “IK” outlet = 230 Vac Max 1 A
“C” - “D” inlet = Clean contact Max 230
Vac 1 A
Key:
B1 -System flow probe (NTC)
B2 -Domestic hot water probe (NTC)
B4 -External probe
M2 -Plant CH pump
M30 - 3-way valve
Note (probe B1, B2, B4):
Connection cable diameter 3÷7 mm
Cable section 0.5 ÷ 1.5 mm
“IT” - “IK” outlet = 230 Vac Max 1 A
“C” - “D” inlet = Clean contact Max 230
Vac 1 A
Key:
B1 -System flow probe (NTC)
B2 -Domestic hot water probe
(NTC)
B4 -External probe
M2 -Plant CH pump
M3 -Domestic hot water pump
Note (Connection bus):
Connection cable diameter 3÷7 mm
Cable section 0.5 ÷ 1.5 mm
Maximum length 3 m
“IT” - “IK” outlet = 230 Vac Max 1 A
“C” - “D” inlet = Clean con-
tact Max 230 Vac 1 A
Note (probe B1, B2, B4):
Connection cable diameter 3÷7 mm
Cable section 0.5 ÷ 1.5 mm
