Filling The System - PENSOTTI PCH 18 Instruction Manual

4.2 Filling the system

Use only clean tap water to fill the system.
Once the water pipes have been connected, close the
gas feed valve and fill the system as follows:
Check that the circulation pump runs freely;
Check that the plug of the air vent valve has been
slackened slightly to allow air to escape from the
system (fig.1);
Open the filling tap R (fig. 2);
Unscrew the plug on the pump to remove any
trapped air, check that the pump is free then re-
tighten it when water starts to flow out;
Open the air vents on the radiators and monitor
the air evacuation process. When water starts to
flow out of the radiators, close the air vents;
Use the pressure gauge M (fig. 2) to check that
the system pressure reaches 1 bar and that the
code H2O does NOT appear on the control panel
display (see 2.7 section „Control Panel‟);
If, after the above operations, there is a reduction
in the pressure, re-open the filling tap R until the
pressure gauge reads 1 bar and that the code
H2O disappears on the control panel display;
On completion, make sure that the filling tap R
is perfectly closed.
Emptying the central heating system
Whenever it is necessary to empty the system,
proceed as follows:
turn off the main power supply switch;
wait for the boiler to cool down;
turn the system drain tap RS (see fig. 2) and use a container to collect the water that runs out;
INSTALLATION INSTRUCTIONS
Fig. 1
Fig. 2
23
AIR VENT VALVE
AIR VENT VALVE PLUG
PUMP
PUMP PLUG
R M