Filling The System - PENSOTTI Solenne PCH50B-H Instruction Manual

4.2 Filling the system

A pressure reducing valve and backflow preventer must be
installed.
Use only clean tap water to fill the system.
Before switching the power supply ON, fill the system as
follows:
•
Check that the circulating 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);
•
Connect a rubber pipe to the draining tap placed on
top of the condensing heat exchanger (fig. 3) and
turn it counter-clockwise.
•
open the filling tap R (fig. 2);
•
to direct any air away from the system;
•
close the draining tap placed on top of the condensing
heat exchanger (fig. 3);
•
use a pressure gauge M (fig. 2) to check that the system
pressure reaches the middle part of the green zone
corresponding to 17.4 psi (fig. 4).
•
On completion, make sure that the filling tap R is
perfectly closed 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 (fig.1);
•
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.
If, after the above operations, there is a pressure reduction, re-
open the filling tap R until the pressure gauge reaches the middle
part of the green zone corresponding to 17.4 psi (fig. 4).
REEGULATION INSTRUCTION
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