KSB Hya-Duo D FL Compact, Installation & Operating Manual, Page: 21 / 48

5 Installation at Site
21 of 48
Hya-Duo D FL Compact
5.4 Connecting the piping
2
1
3
Fig. 5: Connecting the piping
1 Inlet line connection 3 Overflow line connection
2 Discharge line connection
1. Install the piping without transmitting any stresses and strains.
2. Connect the piping to the distribution lines on the inlet side and discharge side.
Connect the inlet line in a rigid horizontal position.
3. Connect the overflow. ( ð Section 5.4.1, Page 21)
5.4.1 Connecting the overflow line
CAUTION
Overflow not connected
Flooding of installation room!
▷ Lay the overflow line to a sewer of sufficient drainage capacity.
NOTE
The overflow with type AB air gap separates the drinking water from the fire-
fighting water (service water) in compliance with the standard, also if the siphon is
clogged or closed.
ü The break tank package booster set for fire fighting has been properly installed.
ü The sewer has sufficient drainage capacity.
ü The drainage capacity required for the break tank package booster set for fire
fighting is met. (
ð Section 6.2.6, Page 31)
1. Design the overflow line as short as possible.
2. Connect the overflow line to the overflow (connection DN 150).
3. Lay the overflow line with a continuously falling slope to the sewer.