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12.2.1 Hydraulic Plumbing Diagram
1
Shut-off valve
2
Pressure reducing valve 5
3
Test valve
12.2.2 Heat Exchanger Plumbing Diagram
(Example: Thermal Solar System)
Heat exchanger
flow
Heat exchanger
return
7
1
1
5
6
cold water connection as per DIN 1988
9
4
Non-return valve
Manometer connection
(to be mounted above tank edge)
6
Drain valve
Stop-cock
Check valve
Flowmeter
Check valve
Stop-
Circulating
cocks
pump
Charging pump
hot water
circulation
(if required)
1
4
8
heating water supply
heating water return
4
2
3
1
Vent
Thermometer
from
collector
Safety
valve
Pressure gauge
Stop-cock
Expansion vessel
7
Diaphragm safety valve
8
Circulating pump
9
Drain
Catchpan
to collector
Page 14 of
20
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