Beretta POWER PLUS Installation Instruction page 29

CLEANING THE SYSTEM
This preliminary operation is required when installing the heat generator in pre-existing systems, and is also recommen-
ded in new systems, so as to remove any scale, impurities, processing residues etc. Power Flushing is recommended
for system cleaning.
To clean the system, if the old heat generator is still
installed in the system, proceed as follows:
- Add scale-remover into the system water circuit;
- Operate the system with the heat generator on for
around 7 days;
- Empty the dirty water from the system and flush with
clean water. Repeat the operation until the system is
clean.
Water connection kits
Water circuit kits comprising manifolds and injection
pumps are available to facilitate completion of the water
circuit.
water connection kit for installations up to 100 kW
1 gas manifold, diameter 45 mm
1 central heating outlet manifold, diameter 45 mm
1 central heating return manifold, diameter 45 mm
1 condensate collection manifold
2" female fittings.
water connection kit for installations above 100 kW
1 gas manifold, diameter 45 mm
1 insulated central heating outlet manifold, Ø 3"
1 insulated central heating return manifold, Ø 3"
1 condensate collection manifold
DN 80 - PN 6 flanged pipes.
(example of installation with in-line boilers)
b
Identify the unit that is closest to the central heating
flow outlet as the Master boiler, so as to minimise
the length of the cables to the pumps, the outlet
probe and any storage heater probe.
b
The outlet probe should be fitted in the socket nea-
rest to the central heating flow outlet, in the direc-
tion of water flow.
If the old heat generator is not installed or not available,
use a pump to circulate the water with the additive in
the system for around 10 days, and carry out flushing as
described in the previous point. At the end of the clea-
ning operations, before installing the boiler, an additive
should be introduced into the water circuit that provides
protection against corrosion and fouling.
Water connection kit for installations up to 100 kW
56
43
Water connection kit for installations above 100 kW
71
GAS
MI
RI
744
150
777 750
29