6 Assembly and installation [specialist]
2014/11
99640766x-mub-en – V03
15
7.
Connect the domestic hot water module with the installation by using the pipes as shown
in the figure below. When the station is delivered, the ball valves and piston valves are
closed, in order to protect the station against dirt. Before connecting the pipes, make
sure that the connections are free from dirt.
1 Primary side: flow from the buffer tank (hot)
Connection: 1½" internal thread, flat sealing
Piping:
at least DN 40, 42 x 1,5 mm,
maximum length 4 m
Make sure to vent the Friwa at the highest point!
2 Primary side: return to the buffer tank (cold)
Connection: 1½" internal thread, flat sealing
Piping:
at least DN 40, 42 x 1,5 mm,
maximum length 4 m
Make sure to vent the Friwa at the highest point!
3 Secondary side: cold water inlet
Connection: 1½" external thread, flat sealing
4 Secondary side: hot water outlet
Connection: 1½" external thread, flat sealing
5 Secondary side:
Hot water circulation, return
Connection: 1½" external thread, flat sealing
