5 Installation at Site
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Hya-Duo D FL
5.4 Connecting the piping
CAUTION
Air pockets in suction line
Fire-fighting system system cannot prime!
▷
Lay the piping with a continuously rising slope.
1952:116
1
Fig. 4:
Correct piping connection
1 Suction lift operation
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.
5.4.1 Connecting the by-pass line
CAUTION
By-pass line not connected
Flooding of installation room!
▷
Guide the by-pass line from the solenoid valve to the sewer or the accumulator.
ü
The fire-fighting system has been properly installed. (
ü
The accumulator has been mounted. (
1. Seal the threads of the by-pass line with suitable sealing material. Screw the by-
pass line into the solenoid valve.
2. Guide the by-pass line to the sewer or into the accumulator.