6
ELECTRICAL INSTALLATION
36
The insertion of relays or other electrical components inside the General Electrical Panel of the appliance is not permitted.
Do not activate the appliance if the hydraulic plant has not been filled.
Figure 6�4 – connection to electrical mains (230 V 1N - 50 Hz)
Example of connection of more than one appliance to the mains.
LEGEND
MC
power terminal block
GS
Master 2-pole power switch
F
Fuse/s
N
Neutral terminal
Ground
ground terminal
L
single-phase line terminal
Disconnect the appliance from the electrical power supply via the external disconnecting switch only after having per-
formed the shutdown cycle (via the DDC or consent switch) and having waited for it to terminate (approximately 3 minutes).
Make sure the ground cable is longer than the live cables. In this way it will be the last wire to be pulled away if the mains
cable should accidentally be pulled, and will thus guarantee the ground connection. Do not use gas pipes to ground
electrical appliances.
A wiring error, as well as impeding the correct operation of the appliance, could also damage the electrical apparatus that
it contains.
6�2
ELECTRICAL CONNECTIONS FOR THE SYSTEM CIRCULATOR
The primary circulation pump/s must be controlled by the S70 board, or directly (via “N�O� contact” contacts) or in-
directly (“OR” use of said contacts by BMS type external systems)� Otherwise, the primary circulation pump/s must
be running permanently�
CONNECTION FOR CONTROLLING INDEPENDENT CIRCULATORS
This connection applies to hydraulic circuits which have a primary circuit circulator for each appliance (independent circulators)
installed on the plant. For example: 1 circulator/1 appliance; 5 circulators/5 appliances.
In such cases, for each appliance it may be sufficient to install a single-phase water circulator (230 V AC), with power absorption less
than 700 W.
To make the circulator-appliance connections, proceed as follows (references to Figure 6.5
→
37):
You will need: the appliance connected hydraulically; single-phase water circulator (230 V AC), with power absorption less
than 700 W. Necessary equipment and materials.
In this case, the circulator’s 230 V AC power can be taken directly off the appliance’s internal terminal block (on the electrical
panel).
1.
Remove the appliance's front panel and open the electrical panel by removing the bolts securing it.
2.
Prepare a suitable cable for the connection.
3.
Locate terminal block MC and the "NO Contact" terminals on controller S70 (SCH) inside the electrical panel, and hook up as
shown in the example.
