INSTALLATION INSTRUCTIONS
12
1
30
148
64.5
80
102
55.5
HR
G
CWI
HF
HR
G
HF
CWI
3.5 Water connections
In order to safeguard the heat exchanger
and circulating pump, especially in case
of boiler replacement, it is recommended
that the system is hot-flushed to remove
any impurities (especially oil and grease)
from the pipes and radiators.
Make sure that the central heating pipes
are not used to earth the electrical
system. The pipes are totally unsuitable
for this purpose.
Isolation Valves must be installed on the
heating circuits. This will facilitate all
maintenance and service operations
where the boiler needs to be drained.
■
To prevent vibration and noise coming from
the system, do not use pipes of reduced
diameter, short radius elbows or severe
reductions in the cross sections of the water
passages.
■
To facilitate the installation, the boiler is
supplied with an hydraulic connection kit (see
fig.2).
Central heating circuit
In order to prevent scaling or deposits in the primary heat exchanger, the mains supply water to the heating circuit
must be treated according to the requirements of local standards.
This treatment is indispensable in the case where the circuit is frequently topped-up or when the system is often
either partially or fully drained.
The outlet connection of the boiler safety valve must be connected to a discharge trap. The manufacturer will not
be held responsible for flooding caused by the operation of the safety valve in the case of system overpressure.
Fig. 2
Fig. 1
