Touch Screen
20
4
MACHINES STATUS AND FUNCTIONS
4.1
NEWTORK MANAGEMENT
A network managed by the remote control Touch Screen can be composed of a maximum of 7 chiller/heat pumps and a maximum
of 80 fancoil units. For what concerns the configuration of the network, you have the following functions as indicated below:
•
fancoils addressing procedure;
•
automatic scanning of the network to discover devices;
•
radiant panel’s management (according to the set-point).
4.2
REMOTE CONTROL CONNECTION WITH MULTIPLE CHILLERS IN THE NETWORK
Chiller’s terminal block
n° 1
Chiller’s terminal block
n° 2
Chiller’s terminal block
n° N
H126 = 1(default)
H126 = N
Use shielded tuisted pair only,
Es. CAT5 STP (connect the shielded
layer to the eround at the same
extremity od the uire)
In the each on-board control panel, set the chiller (parameter
H126
) as described above.
Then connect the chiller and the remote control Touch Screen as shown in the drawing.
In the remote control Touch Screen, by setting the parameter
Par 8/65
(
Configuration- > Service Menu > Keyboard
) related to the
number of chillers in the network, you can configure the network: with
Par 8/65 = 0
all the chiller in network feature a similar
operation (parallel operation, according to a single set point), while whit
Par 8/65
≠
0
we have a decalibration on the steps of the
chiller set point, allowing a cascade operation. In particular, the parameters to be set in a network of the chiller to be configured in a
cascade are:
•
Par 8/65
: number of chillers in the network (for cascade operation);
•
Par 9/65:
Rotation period (for cascade operation);
•
Par 10/65
: (default 2.0°C): differential chiller (for cascade operation).
In the case of cascade configuration (
Par 8/65
≠ 0
), the set point of each chiller is changed by a multiple value of the parameter
Par
10/44
(°C) (differential chiller), according to a step-decalibration. After each period equal to
Par 9/65
minutes, the priorities for the
Summary of Contents for TOUCH SCREEN N
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