TECHNICAL MANUAL
CVM 3000
C 5030 CV/04-99 GB
11
1.4 Live digital inputs
39
Reference signal for all live inputs, where the neutral conductor must be
connected (N). The signal contacts must interrupt the other phase (R) and, if the contact
is closed, they must let the phase (R) reach the terminal of the corresponding contact.
40 41 42 43 44 45 46 47
Compressor maximum safety high pressure switch signal
input;
48 49 50 51 52 53 54 55
Compressor thermal overload protection signal input;
56
Primary circuit flow switch signal input;
57
Secondary circuit flow switch signal input.
(*) A flow switch at the evaporator’s outlet is mandatory to avoid the invalidation of the
warranty.
Connection to the electrical panel:
Flow switch contact
Pump contact
A
B
C
D