Installation, user and maintenance manual
– GAHP-A
47
Prepare the electrical connection in such a way that the ground wire is longer than
3.
the live wires. In this way it will be the last wire to be torn away if the cable is ac-
cidentally pulled off; this will ensure the ground connection.
Electrical safety is ensured only when the appliance is correctly connected to an efficient
grounding system, realized according to current safety regulations. Do not use gas pipes
as grounding.
figure 6�7 – Electrical wiring diagram
Example of connection of appliance to 230 V 1 N - 50 Hz electricity supply
LeGend
TER
terminal board
L
phase
N
neutral
Components NOT SUPPLIED
GS
general switch
6�3
tYPe A (CoMfoRt ContRoL PAneL)
This paragraph illustrates the operations to be performed when one or more appliances
are connected to a Comfort Control Panel (CCP). In particular:
What is the CAN BUS cable.
1.
How to connect the CAN BUS cable to the appliance's electronic board
2.
How to connect the CAN BUS cable to the Comfort Control Panel
3.
How to connect the Comfort Control Panel
4.
How to connect the plant water circulation pump.
5.
For specific information regarding the operation and programming of the CCP, refer to
the specific manuals supplied with it.
The appliance and the CCP communicate with each other via a CAN bus network.
The CAN bus network is characterized by a series of elements (appliances or CCPs) called
nodes, connected to each other by a three-wire cable. The nodes are of two types: termi-
nal nodes and intermediate nodes.
Terminal nodes are appliances or CCPs that are connected to one other element
•
only.
Intermediate nodes are appliances or controllers which are connected to two other
•
elements.
The diagram in Figure 6.8 Example of CAN BUS
→
48 gives an example of a CAN BUS
network: 3 appliances are connected to each other and to 1 CCP. Appliance D and the
CCP (A) are terminal nodes, while appliances C and B are intermediate nodes as they are
connected to 2 elements.
