35
5.4.5
Installing the steam and condensate lines
Installations notes
– Use
original steam and condensate hose
from your Nordmann representative or
solid steam
pipes from copper or stainless steel (min. DIN 1.4301) exclusively
. Steam and condensate lines
from other material may cause undesired operational malfunctions.
– Initially, lead the steam line
upright upwards min. 300 mm above the humidifier
. Then lead the
steam line with a
minimum upslope
and/or a
minimum downslope of 15 %/8.5°
to the steam
distributor.
– The condensate hose from the steam distributor is led down to the humidifier with a
minimum
downslope of 15 %/8.5°
, via a condensate trap (
min. hose bend diameter Ø200 mm)
and there
it is to be connected to the appropriate connector on top of the unit.
Important!
Before putting the unit into operation, the condensate trap of the condensate hose must
be filled with water.
– The steam line should be kept as short as possible (
max. 4 m
while observing the
minimum bend
radius of 300 mm
(for steam hoses)
or
5 x internal diameter
(with solid steam pipes), respectively.
Important!
Allowance must be made for a
pressure loss of approx. 100 Pa
per meter steam line
and per 90° elbow.
–
Important!
When deciding on the length and layout of steam hoses, it should be noted that steam
hoses may become shorter and/or longer depending on temperature and age.
– The steam hose must be secured to the steam distributor and humidi fier steam outlet by means of
hose clamps
. Solid steam pipes should be connected to the steam distributor and steam humidifier
with short lengths of steam hose secured with hose clamps.
Caution!
Do not overtighten the hose clamp on the steam connector of the steam humidifier.
– Steam lines made of solid pipes (copper or stainless steel) must be insulated over the entire length
to minimize condensate formation (=loss).
DANGER!
Reducing the cross section or the complete closure of the steam line will cause an exces-
sive increase in pressure in the steam cylinder when the unit is operating and could lead to
the risk of scalding accidents. All installations must comply with the following instructions
.
– When installing make sure the steam line is open over the entire length and through the whole cross
section. Any sealing plugs, adhesive sealing sheets etc. must be removed before connecting the
steam pipe. Reductions in cross section by kinking or crushing must be avoided.
– Steam hoses must be prevented from sagging (condensate pockets); if necessary, support steam
hose with pipe clamps, trough, or wall brackets, and install a condensate drain at any low points in
the steam line.
– It is
not permitted to install a stop valve
(e.g. a manually controlled stop valve, solenoid valve,
etc.) in the steam line, due to an inadmissible increase of pressure in the steam cylinder if the valve
is closed during the operation.
Note: If for technical reasons a stop valve is to be installed, the pressure relief valve (available as
accessory) must be installed in the steam line between steam cylinder and and stop valve for safety
reason.
