Product description 3
0020291544_01 Hydraulic Station Installation and maintenance instructions
23
3.3
Product overview
3.3.1
Product design
6
4
5
1
2
3
1
Unit mounting bracket
2
Expansion vessel
3
Hydraulic block
4
Electronics box with
control PCB
5
Control for the indoor
unit
6
Electronics box with
power supply PCB
3.3.2
Design of the hydraulic block
8
9
10
1
2
3
4
5
6
7
1
Manometer
2
Expansion relief valve
3
Building circuit return
4
Building circuit flow
5
Domestic hot water
cylinder return
6
Domestic hot water
cylinder flow
7
Prioritising diverter
valve (heating cir-
cuit/cylinder charging)
8
Electric back-up heater
9
Safety cut-out
10
Automatic air vent
3.3.3
Underside of the product
1
6
5
4
3
2
7
1
Drain for expansion
relief valve
2
Building circuit return
3
Building circuit flow
4
Domestic hot water
cylinder flow
5
Domestic hot water
cylinder return
6
Heating return, to the
heat pump
7
Heating flow, from the
heat pump
