EB2111/2121/2123 EN 5-11
Installation
5.6.3 Filling the plant
Open the shut-off valves slowly over a time
period of several minutes preferably starting
fromtheupstreampressuresidetollthe
plant.
Risk of regulator damage due to steam
hammering.
Steam hammering is possible when the pro-
cess medium is a liquid with a boiling point
at atmospheric pressure.
Î Open the shut-off valves slowly prefera-
bly starting from the downstream side to
ll the plant over a time period of several
minutes.
5.7 Insulation
To insulate cold or heated systems, we rec-
ommendrstllingtheplantandcarefully
rinsing it. The regulator must not yet be insu-
lated at this stage.
Risk of regulator damage due to incorrect
insulation.
Î Only insulate the regulator up to the con-
trol thermostat for medium temperatures
below 0°C/32°F or above
80°C/175°F.
1. Start up the plant and adjust the set point
(see the 'Start-up' section).
NOTICE
!
NOTICE
!
2. Shut down the plant again.
Cooling applications: allow the regulator
to heat up until all the condensation wa-
ter has dried off.
Heating applications: allow the regulator
to cool down.
3. Insulate the regulator and pipes convey-
ing the process medium using insulation
material with a water vapor barrier. If a
capillary tube of the control thermostat is
to be routed through the insulation, spe-
cial care must be taken with the sealing
since slight changes in shape may occur.
The insulation thickness depends on the
medium temperature and the ambient
conditions.50mmisatypicalthickness.
5.8 Mounting accessories
Risk of personal injury due to pressurized
components and process medium being dis-
charged.
Incorrect opening of pressure equipment or
mounting parts may lead to the process me-
dium escaping to the atmosphere.
Î Do not loosen the control thermostat
while the valve is pressurized.
Î Do not start up the regulator until all
parts have been mounted.
− The extension piece is installed between
valve and thermostat to protect the oper-
ating element against high temperatures.
WARNING
!