17
ENGLISH
Circuit filling and putting into service must only be done by
qualified personnel.
Fill and bleed the primary and secondary circuits and check
for leaks before putting the unit into service.
- Check that the ring nuts of all the water fittings are tight.
- Open the cold water and hot water shut-off valves slowly in
order to avoid pressure surges.
- Fill the system and check it for water tightness.
- All fittings are assembled in the factory. It is nevertheless
advisable to check their tightness after installing the prod-
uct. It is also necessary to test the product for water tight-
ness at operating pressure when putting it into service.
- Power on the unit.
- Bleed the system as follows:
- Open a hot water tap near the unit.
- Bleed the primary (storage cylinder) circuit by means of the vent valve normally located at the highest point in the circuit.
- Continue until all the air has been bled from the system.
b
Persistent water circulation noises from the pump indicate that there is still air in the circuit.
- Close the unit’s inspection doors.
b
Before starting the product, it is necessary to connect the pre-wired temperature probe S4 to the puffer (see the
CONNECTIONS section).
b
Connect electrically the module to the 230 VAC mains: Use the terminals indicated in the figure.
- It is advisable to pass the power cable through the ap-
propriate holes in the cabinet, and through the cable
glands of the electrical panel.
- Proceed with the venting of the primary and recircula-
tion circuits (if presents) as follows:
- power up the module by activating the selector;
-
- from the control unit (for more details on the operation of
the control unit read the next section carefully);
- access menu 3, OPERATING MODE and press OK,
then activate MANUAL FUNCTION in menu 3.2;
- use the <or> selector to move to function V3 (1st pri-
mary circulator) and activate by pressing the OK key.
Leave the circulator active for at least 20 seconds to
eliminate the residual air inside the circuit;
- use the <or> selector to move to function V4 (2nd pri-
mary circulator) and repeat the operation as described
above;
- repeat the last 2 points at least 2 times for the complete
elimination of the air;
- n the presence of a recirculation kit, from the same
menu activate V1 (recirculation circulator). Repeat the
procedure as above.
The recirculation kit, not as the primary circuit, re-
quires a manual venting operation, by acting on the
special valve located above the circulator.
The same is connected to a drainage tube. It is advis-
able to carry out the bleeding operations by slightly
opening the valve and using a suitable container to
avoid splashing water against the electrical parts of
the BIG T-FAST.
b
The module is unable to fully vent the recirculation
circuit, authorized personnel must vent manually all
the recirculation branches in the building.
- Exit the manual mode and reactivate the AUTOMATIC FUNCTION.
- The vent on the side of the buffer storage takes place by means of a suitable device located on the rear of the same.
- Set an appropriate adjustment in the control unit (see the next par.).
b
The connections of the electrical devices inside the module are already made by the manufacturer. The connection to the
electrical network must be made using a special cable (not supplied by the manufacturer), following the instructions pro-
vided.
b
Any intervention on the electrical parts of the device must be carried out in compliance with the regulations in force.
PUTTING INTO SERVICE
OFF
ON
b
Provide electrical protections on the power supply line as per current legislation.
Summary of Contents for SC ACS 160
Page 9: ...9 ENGLISH WIRING DIAGRAM ...
Page 43: ...43 ENGLISH ...
