Viadrus HERCULES E68 5 A, Руководство по эксплуатации и установке

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5.2.4 Hydraulic scheme of the boiler
In the case of using of the shut-off valve, it is necessary to mount a safety valve between the boiler and shut-off valve.
Version with an storage tank, with one heating circuit and a HW heating circuit.
Fig. №. 25 Mounting of the rear part of the cladding and the cleaning tool holder
Legend:
1. Heating system (radiator-type, floor-type heating-up)
2. Two-way safety valve DBV 1-02
3. Expansion tank
4. Waste
5. Valve 1 room thermostat (mixed heating circuit)
6. Storage tank
7. Expansion tank - additional
8. Stack heater of hot water - combined
9. Expansion tank of the stack heater of hot water
Separately bought accessories of regulation; it is not part of supply of the boiler:
Ele
ctric devices connected from the boiler’s control unit:
B1
– Valve 1 temperature sensor (mixed heating circuit)
B2
– Boiler temperature sensor
B3
– Domestic hot water (DHW) temperature sensor
B4
– Storage tank upper temperature sensor
B41
– Storage tank lower temperature sensor
B9
– Outdoor temperature sensor
Q1
– Storage tank pump
Q2
– Valve 1 pump (mixed heating circuit)
Q3
– Domestic hot water (DHW) pump
Y1
– Valve 1 servo drive (mixed heating circuit)