5 - Installation
pic. 4
DHW:
1 - DHW flow
5 - Domestic cold
water network inlet
CH:
3 - Flow
4 - Return
Recirculation:
2 - Inlet
WARNING: Installation is to be per-
formed exclusively by professionally
qualified personnel or else warranty
will be void.
A) Choose a location
It is advisable to install the cylinder
as close as possible to the boiler, in
any case it is important to insulate
the connection pipes.
B) Water connection and prelimi-
nary operations
- verify boiler output to be at least
15% larger than cylinder absorption;
- verify volume and pre-set pressure
of DHW expansion vessel to be sui-
table for system characteristics;
- should water be particularly hard,
install a properly adjusted water sof-
tener upstream from cylinder;
- should water main contain impuri-
ties, install a suitable filter and verify
the pumps to have adequate flow
rate capacity and pressure head;
- verify correct positioning of thermo-
stat and thermometer probes;
- verify operation of thermostatic
controls;
HYDRAULIC CONNECTIONS must
be implemented as shown in pic. 4.
6 - Start-up procedure
7 - Maintenance
Fill up cylinder with domestic cold
water and bleed air in the system by
opening a tap.
Fill up cylinder heat exchanger with
CH water and bleed air in the
system.
Set DHW temperature on control
panel, following the instructions pro-
vided. DHW temperature is best set
to 60/65°C.
The cylinder is to be started by qua-
lified personnel.
Periodically verify command, control
and adjusting devices operation.
In order to clean external surfaces
of cylinder, use a cloth dampened in
appropriate, readily available on the
market, cleaning products. Do not
use abrasive substances, solvents,
petrol-based products, alcohol, etc.
On a yearly basis, check magne-
sium anode fitted to the flange. The
anode can be inspected directly, by
releasing the flange (see pic.5) or
externally by means of a multi-
meter.
Should water be particularly hard,
the cylinder should receive a cal-
cium deposit removal treatment at
least once a year.
Calcium deposit removal procedure:
empty cylinder by opening the drain
tap, then remove the flange to
access the inside of the cylinder.
Remove any calcium build up by
means of a plastic or wooden spatu-
la and rinse with water.
During implementation of cleaning
procedure, be very careful not to
damage cylinder internal coating.
Upon completion of cleaning proce-
dure, install the flange and its sea-
ling gasket ( should it appear dama-
ged, fit a new one), close the drain
tap and fill up the cylinder, checking
for leaks from flange and drain tap.
pic. 5
6
