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11.2 Hydraulic Plumbing Diagram
1
Shut-off valve
2
Pressure-reducing valve
3
Test valve
4
Non-return valve
5
Manometer connection
*
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)
7
1
1
5
6
Cold water connection acc. to DIN 1988
Kaltwasseranschluß nach DIN 1988
9
6
7
8
9
17
Hot water
Warmwasser
Circulation
Zirkulation
4
8
Hot water flow
Heizwasservorlauf
Hot water return
Heizwasserrücklauf
4
2
3
Drain valve
Diaphragm safety valve
(to be mounted above tank edge)
Circulating pump
Drain
(if required)
(wenn erforderlich)
1
*
*
1
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