Hi-T2
Centralised controller
19
3.6.6
HELP PAGE
The help page gives guidance on the meaning of the buttons; in the list that appears, the function of each icon is indicated.
4
MACHINES STATUS AND FUNCTIONS
4.1
NETWORK MANAGEMENT
A network managed by the remote control Hi-T2 can be composed of a maximum of 7 chillers/heat pumps and a maximum of 80 fan
coil units. As for the configuration of the network, you have the following functions as indicated below:
•
fan coils addressing procedure;
•
automatic scanning of the network to discover devices;
•
radiant panels management (according to the set-point).
REMOTE CONTROL CONNECTED WITH SEVERAL 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 twisted pair only,
Es. CAT5 STP (connect the shielded
layer to the ground at the same
extremity of the wire)
In the each on-board control panel, set the chiller address (parameter
H126
) as described above.
Then connect the chiller and the Hi-T2 remote control as shown in the drawing.
In the Hi-T2 remote control, 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 chillers in network feature a similar operation
(parallel operation, according to a single set point), while with
Par 8/65 ≠ 0
we have a decalibration on the steps of the chiller set
points, allowing a cascade operation. In particular, the parameters to be set in a network of chillers to be configured in a cascade
are:
•
Par 8/65
: number of chillers in the network (for cascade operation);
•
Par 9/65
: (default 1 hour.): rotation period (for cascade operation);
•
Par 10/65
: (default 2.0°C): chiller differential (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
10/65
(°C) (chiller differential), according to a step-decalibration. After each period equal to
Par 9/65
minutes, the priorities for the
Chiller's terminal block
n° 1
H126 = 1 (default)
Chiller's terminal block
n° 2
Chiller's terminal block
n° N
Use shielded twisted pair only,
Es.CAT5 STP (connect the shielded
layer to the ground at the same
extremity of the wire)
