37Installation
4.5.2 Notes on water installation
General notes on installation of the hoses
– Use the supplied black plastic hoses ø10/8 mm and ø12/10 mm only. For hygienic reasons do not
use other hoses (except products supplied by your Condair distributor).
CAUTION!
Fully demineralised water is aggressive. For this reason, the entire water system must contain
fully demineralised water resistant material only (do not use copper pipes).
– When cutting hoses use an appropriate cutting tool providing straight, kink-free cuts.
CAUTION!
After cutting the tubes the sharp cutting edge must be deburred otherwise the couplings may
be damaged.
– The hoses must be free of kinks and other damage (longitudinal scratches, in particular).
– When cutting hoses always add at least 5 mm to the required length. This way the hoses can be
fastened correctly (down to the stop) to the quick-action couplings of the nipples.
– Make sure the hoses are not kinked and pay attention to the mini mum bend radius of 100 mm.
– Do not lead hoses past hot system components (max. ambient temperature is 40 °C).
– To prevent damage we strongly recommend leading the hoses inside a duct (or a similar means of
protection) between the central unit and the housing feed throughs of the duct/AHU.
– It is mandatory that the hoses between the connections on the nozzle grid and the housing feed
throughs on the duct/AHU, and between the housing feed throughs and the corresponding connec-
tors on the central unit are installed with a constant downslope.
– After installation verify correct fastening of all hoses. Correctly mount ed hoses can not be removed
without pressing the locking ring.
CAUTION!
In order to avoid damage caused by leaking water during operation, all hoses must correctly be
secured against accidently pulling out.
RO water supply
– The installation of a shut-off valve is mandatory. The shut-off valve is to be installed as close to
central unit as possible. The installation of a water lter with a mesh width of min. 0.005 mm and a
test valve is recommended.
Before joining the fully demineralised water supply conduit to the water supply connector on the
central unit, ush the conduit thoroughly for at least 10 minutes.
If the water pressure is >7 bar, install a pressure reducing valve (set to 7 bar) in the supply conduit.
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