Commissioning
Vacuum spray degassing — 28.08.2019 - Rev. B
English — 21
7.1
Requirements for initial commissioning
The device will be ready for commissioning when the tasks described in the "Installation" chapter have been completed.
•
The device has been mounted.
•
The connections of the device to the system has been created and the facility system pressure maintenance is operational.
–
Degassing line to the facility system.
–
Degassing line from the facility system.
•
The water-side connection of the device to the make-up has been created and is operational, if automatic make-up is
required.
•
The connection pipes of the device have been purged and cleaned of welding residue and dirt before commissioning.
•
The entire system is filled with water and all gases have been vented in order to ensure a circulation through the entire
system.
•
The electrical connection has been created according to applicable national and local regulations.
7.2
Setting the minimum operating pressure for Magcontrol
The "P
0
" minimum operating pressure is only directly entered
together with the pressure-dependent regulated make-up at
the Servitec device in systems with an expansion vessel via the
Reflex Control Smart operating app. The value is determined
at the pressure maintenance location.
Description
Calculation
p
st
Static pressure
= static head (h
st
)/10
p
0
Minimum operating
pressure
= p
st
+ 0.2 bar
(recommended)
p
a
Initial pressure (cold
water filling pressure)
= p
0
+ 0.3 bar
p
e
Final pressure
≤ p
Sv
- 0.5 bar (for p
Sv
≤ 5.0
bar)
p
Sv
Safety valve actuating
pressure
= p
0
+ 1.2 bar (for p
Sv
≤ 5.0
bar)
The calculation of the minimum operating pressure can be directly calculated and saved during initial commissioning using the
Reflex Control Smart app for configuration. Please always check the correct inlet pressure of the expansion vessel in the system.
Proceed as follows:
1.
In the app, set the controller to "Magcontrol”.
2.
Determine the “P
0
” minimum operating pressure of the device relative to the “p0” initial pressure of the expansion vessel.
•
The device is installed at the same level as the
expansion vessel (∆h
st
= 0).
–
P
0
= p0*
•
The device is installed at a lower level than the
expansion vessel.
–
P
0
= p0 +
∆h
st
/10*
•
The device is installed at a higher level than the
expansion vessel.
–
P
0
= p0 -
∆h
st
/10*
*
p0 in bar, ∆h
st
in m
