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INSTALLERUSER
MAINTENANCE TECHNICIAN
3.7 D.H.W. PUMP BOILER AND TANK PROBE WIRING DIAGRAM (optional).
3.8 COMMON FLOW PROBE AND 3WAY BOILER WIRING DIAGRAM (optional).
3.9 SIMPLE CASCADE BOILER WITH D.H.W. PUMP AND TANK PROBE WIRING DIAGRAM (optional).
Key:
B1-2 -System ow probe (NTC) (optional)
B2 - Domestic hot water probe (NTC) (optional)
B4 - External probe (optional)
M2 - Plant CH pump (optional)
M3 - Domestic hot water pump (optional)
Note (probe B1-2, B2, B4):
- Connection cable diameter 3÷7 mm
- Cable section 0.5 ÷ 1.5 mm
2
1 - External relay (optional)
Coil 230 Vac - Max. 0.1 A
2 - 230 Vac 50 Hz
3 - “IT”-“IK” outlet =
230 Vac - 0.8 A Max. cosφ ≥ 0.6
4 - “C”-“D” inlet = Clean contact
Max. 230 Vac - 0.8 A Max. cosφ ≥ 0.6
Key:
B1-2 - System ow probe (NTC) (optional)
B2 - Domestic hot water probe (NTC) (optional)
B4 - External probe (optional)
M2 - Plant CH pump (optional)
M30 - 3-way valve (optional)
Note (probe B1-2, B2, B4):
- Connection cable diameter 3÷7 mm
- Cable section 0.5 ÷ 1.5 mm
2
1 - External relay (optional)
Coil 230 Vac - Max. 0.1 A
2 - 230 Vac 50 Hz
3 - “IT”-“IS"-"IK” outlet =
230 Vac - 0.8 A Max. cosφ ≥ 0.6
4 - “C”-“D” inlet = Clean contact
Max. 230 Vac - 0. 8 A Max. cosφ ≥ 0.6
Key:
B1-2 - System ow probe (NTC) (optional)
B2 - Domestic hot water probe (NTC) (optional)
B4 - External probe (optional)
M2 - Plant CH pump (optional)
M3 - Domestic hot water pump (optional)
Note (Connection bus):
- Connection cable diameter 3÷7 mm
- Cable section 0.5 ÷ 1.5 mm
2
- Maximum length 3 m
Note: Probes B1-2, B2, B4 must be connected to
the MASTER boiler.
Note (probe B1-2, B2, B4):
- Connection cable diameter 3 ÷ 7 mm
- Cable section 0.5 ÷ 1.5 mm
2
1 - External relay (optional)
Coil 230 Vac - Max. 0.1 A
2 - 230 Vac 50 Hz
3 - “IT”-“IK” outlet =
230 Vac - 0.8 A Max. cosφ ≥ 0.6
4 - “C”-“D” inlet = Clean contact
Max. 230 Vac - 0.8 A Max. cosφ ≥ 0.6
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