17
11.2 Hydraulic Plumbing Diagram
1
Shut-off valve
6
Drain valve
2
Pressure-reducing valve
7
Diaphragm safety valve
3
Test valve
(to be mounted above tank edge)
4
Non-return valve
8
Circulating pump
5
Manometer
connection
9
Drain
*
on HPWH without internal heat exchanger, the connections for the suppl. heat source are dispensed
with, i.e. no heating water flow and return lines)
1
1
8
4
1
7
Warmwasser
Heizwasservorlauf
Zirkulation
(wenn erforderlich)
Heizwasserrücklauf
Kaltwasseranschluß nach DIN 1988
9
6
1
5
4
3
2
*
*
Hot water
Hot water flow
Circulation
(if required)
Hot water return
Cold water connection acc. to DIN 1988
