8 EB 2173 EN
Installation
4 Installation
Choose a place of installation that allows
you to freely access the regulator even after
the entire plant has been completed.
Make sure that the permissible ambient tem-
perature does not fall below –20°C or ex-
ceed +80°C.
4.1 Installing the valve
Flush the pipeline thoroughly before install-
ing the regulator to ensure that any sealing
parts, weld spatter, and other impurities car-
ried along by the process medium do not im-
pair the proper functioning of the valve,
above all the tight shut-off.
NOTICE
Malfunction and damage due to ad-
verse effects of weather conditions
(temperature, humidity).
Do not install the temperature regula-
tor outdoors or in rooms prone to
frost. If such a location cannot be
avoided, protect the regulator
against freezing up if the process
medium owing through the valve
can freeze up. Either heat the regula-
tor or remove it from the plant and
completely drain the residual medi-
um.
– Install the valve free of stress and with the
least amount of vibrations as possible.
– The ow of direction must correspond
with the direction indicated by the arrow
on the valve body.
– The control thermostat must be suspend-
ed to hang downward. Other mounting
positions are possible for temperatures
up to 110°C.
– Make sure that the inlet and outlet ows
of the plant are correctly assigned to
ports A, B and AB according to Fig.2.
4.2 Temperature sensor
NOTICE
Galvanic corrosion due to incorrectly
selected materials of the mounting
parts.
On installing the sensor or thermow-
ell, only combine the same kind of
materials (e.g. stainless steel with
stainless steel or copper together with
other copper materials).
The temperature sensor may be installed in
any position even when a thermowell is
used. However, make sure its entire length is
immersed in the process medium to be con-
trolled. It must be installed in a location
where overheating or considerable idling
times cannot occur.
Note:
If the sensor is to be used with a ther-
mowell, only use original SAMSON
thermowells.
Weld a welding socket with G½ or G¾ fe-
male thread (to match the screw gland) at
the place of installation.
Î Seal the screw gland of the sensor.
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