2. Secondary side:
Hot water circulation, return flow,
1” connection, OT, flat-sealing
3. Secondary side:
Cold water inlet,
1 1/4” connection, OT, flat-sealing
4. Secondary side:
Hot water outlet,
1 1/4” connection, OT, flat-sealing
5. Primary side:
Inlet from the buffer tank,
2” connection, OT,
Piping at least DN 32, 35 x 1.5 mm,
maximum length 2 m
A
B
1
2
3
5
4
Fig. 7: Piping of the fresh water station
A: Pipe distance from the wall (primary) = 95 mm
B: Pipe distance from the wall
(secondary) = 167 mm
Integration in a domestic connection group
(safety assembly)
Please note!
A domestic connection group (safety assembly)
is required despite an integrated safety valve
(DIN 1988)!
Installation example
A
Fig. 8: Installation example
A: Fresh water station
1: Shut-off valve
2: Pressure reducer
3: Test device
4: Backflow preventer
5: Connection point for measuring device
6: Shut-off valve
7: Safety valve with drainage line and funnel trap
8: Through-flow membrane expansion vessel
(recommended if pressure fluctuations are
anticipated on the domestic connection side)
A
Fig. 9: Integration in a domestic connection group
A: Domestic connection group (safety assembly)
17
