1.1.3-Connections between the electrical box and the CWS unit
Connect the unit main box to each module , as shown in the electrical schematic, using an adequate cable, respecting the marking in the main electrical box and in the module box. The numbering mustfollow the electrical schematic supplied. 1.1.4 -The internai connections are:
The internal connections from the main box to the individual module box are:
• Mains supply: check that the mains supply corresponds to the electrical box data.
• Controls: these are the safeties and controls from the electrical box to each single module. Each module is equipped with a connection boxwith a numbered terminal strip.
• The thermostat probe (mod. NTC) is already installed in the special "pocket" on the unit manifold, and must be connected as indicated in the electrical schematic. The probe cable should run separate from power cables to avoid interferences. In case of need of extending it, use a shielded cable. Do not exceed 10 metres.
• Connect the flow switch (no polarity)as indicated in the electrical schematic. Never run the unit without connecting the safety flow switch (see 3.2 ).