Notes On Water Installation - Nordmann AT4 Series Mounting Instructions

5.5.2

Notes on water installation

48
Water supply
The water supply is to be carried out according to the figure found in chapter
5.5.1 and the applicable local regulations for water installations. The indicated
connection specifications must be observed.
– The installation of the filter valve (accessory "Z261", alternatively a
shut­off valve and a 5 µm water filter can be used) should be made as
close as possible to the steam humidifier.
– Admissible mains pressure 1.0 to 10.0 bar (hammer-free system)
For mains pressures >10 bar, the connection must be made via a pres­
sure reducing valve (adjusted to 1.0 bar). For mains pressures <1.0 bar
please contact your Nordmann supplier.
– Notes on water quality:
– For the water supply of the Nordmann AT4, use exclusively untreated
drinking water.
– The use of additives such as corrosion inhibitors, disinfectants,
etc. is not allowed, since these additives may endanger health and
affect proper operation.
– If the Nordmann AT4 shall be operated with softened or partly sof­
tened water, please contact your Nordmann supplier.
– The connection material must be pressure-proof and certified for use
in drinking water systems.
– Important! Before connecting the water line, the line should be well
flushed out.
CAUTION!
The thread at the humidifier connection is made of plastic. To avoid
overtightening, the union nut of the water pipe must be tightened by
hand only.
Water drain
The water drain is to be carried out according to the figure found in chapter
5.5.1 and the applicable local regulations for water installations. The indi­
cated connection specifications must be observed.
– Make sure that the drain pipe is correctly fixed and easily accessible for
inspections and cleaning purposes.
– The draining temperature is: 80...90 °C. Use temperature­resistant
installation materials only!
– The two drain hoses of a double unit must be led into separate funnels
with siphon.