Nortec ME Control Installation - Manual (Page 27)

27 Installation
4.4 Water installation
4.4.1 Notes on water installation
The layout of the water piping (distribution, supply and drain water piping) depends on the system version.
Refer to the corresponding chapter for detailed information and observe the following installation notes.
– Notes on distribution piping
– The distribution piping is to be carried out according to the figures found in chapter 4.4.4 – Mount-
ing the control unit and 4.4.3 – Water installation (external installation) and the applicable local
regulations for water installations. The indicated connection specifications and connection layout
must be observed.
– The distribution piping is made of ø15 mm (0.625") black plastic hoses (supplied as part of the
internal installation kit) or stainless steel pipe (supplied as part of the external installation kit).
– Make sure the distribution hoses have a constant downslope (no sagging) to the hydraulic module
and are not kinked over the entire length.
– All connections are made with push-fit fittings.
– On systems where the hydraulic module is mounted outside the duct, the supplied feed throughs
and hose supports must be used.
General notes on installation of the hoses
– Use the supplied black plastic hoses ø15 mm (0.625") only. For hygienic reasons do not use
other hoses (except products supplied by your Nortec distributor).
– When cutting hoses use an appropriate cutting tool providing straight, kink-free cuts.
CAUTION!
After cutting the hoses any sharp edges must be deburred otherwise the couplings may be
damaged.
– The hoses must be free of kinks and other damage (longitudinal scratches or misshaped ends,
in particular).
– When cutting hoses always add at least 5 to 10 mm (0.2" to 0.4") to the required length. This
way the hoses can be fastened correctly (down to the stop) to the push-fit couplings.
– Make sure the hoses are not kinked and pay attention to the mini mum bend radius of 100 mm (4").
– Do not lead hoses past hot system components ( max. ambient temperature is 40 °C/104 °F).
– After installation verify correct fastening of all hoses. Correctly mount ed hoses can not be re-
moved 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.