System inspection and maintenance
14
Logano GE515 - We reserve the right to make any changes due to technical modifications.
61
14.5 Checking the system water pressure
Systems are generally differentiated as open or sealed
systems. Open systems are now only rarely installed.
Therefore, a sealed system is used as an example of
how you can check the water pressure.
Open systems
On open systems the pressure gauge needle (Fig. 77,
[1]
) must be within the red range (Fig. 77,
[3]
).
Sealed systems
On sealed systems the pressure gauge needle (Fig. 78,
[2]
) must be within the green range (Fig. 78,
[3]
). Set the
red needle (Fig. 78,
[1]
) on the pressure gauge to the
required system pressure.
z
Set the pressure gauge needle accordingly.
z
Check the system water pressure.
Fig. 77 Pressure gauge for open systems
1
Pressure gauge needle
2
Green needle
3
Red range
Fig. 78 Pressure gauge for sealed systems
1
Red needle
2
Pressure gauge needle
3
Green range
3
1
2
3
1
2
USER NOTE
z
Create the operating pressure required
for the system.
CAUTION!
SYSTEM DAMAGE
through frequent re-filling.
The system may be damaged, depending
on water quality, by corrosion or scaling, if
you frequently need to re-fill your system
with make-up water.
z
Ensure that your heating system is
adequately vented.
z
Check the heating system for leaks and
the function of the expansion vessel.
