13
System inspection and maintenance
Logano G615 - Subject to technical modifications
51
13.5
Checking the operating pressure
The operating pressure must be at least 15 psi (1 bar).
B
Read the current operating pressure (psi) and
temperature ( °C or °F) from the temperature/pressure
gauge.
B
If the operating pressure drops below 15 psi (1 bar), ref
boiler water.
Fig. 64 Pressure/temperature gauge
13.6
Refilling boiler water and purging
the system
B
Slowly fill the heating system via the on-site fill valve.
During filling, observe the display (pressure gauge).
B
Once the desired operating pressure is reached, stop
the procedure.
B
Purge the heating system via the purge valves on the
system.
B
Fill with water again if the operating pressure drops as
a result of purging the system.
7 747 019 141-17.1RS
NOTICE:
Risk of system damage from
temperature stresses.
B
When the heating system is in operation,
do not fill it via the boiler fill & drain valve.
Instead, fill it on the system side.
Bring the system up to the required operating
pressure.
NOTICE:
Risk of system damage due to
frequent refilling.
B
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.
B
Ensure that your heating system is bled.
B
Check the heating system for leaks and
the function of the expansion vessel.
