EN7510364-00
EN - 14
Switching to the cooling function (standard) from warming can
be done via the BUS connection.
In the event of an outdoor temperature sensor fault the warming
function is stopped.
100%
Fans
A109.1 =
Selection
temperature
Outdoor
temperature –
Water temp ≤ 1
Outdoor
temperature –
Water temp ≥ 2
4.9 CMS link (menu 11)
(from V07)
With the exception of the language, control type (local, remote) and communication parameters, all the parameters can be
accessed in read and write modes.
2 communication interfaces are possible (RS 485 and TCP)
4.10 Link with a CIAT chiller
To establish communication between the water chiller and the drycooler, the following is required:
1) A BUS connection between the water chiller and the drycooler, using the following wiring:
- Terminal block J10 of water chiller to J11 of the drycooler (for drycooler software versions <V09)
- Terminal block J10 of water chiller to J9 of the drycooler (for drycooler software versions ≥V09)
2) Configure the following parameters:
- P116 of water chiller = YES
- A116 of drycooler = YES for software versions < V09
- On software versions ≥ V09, drycooler parameter A116 is no longer visible, it automatically changes to YES upon
connection.
For software versions ≥ V09, check that the connection has been established by parameter A316 visible in the reading parameters.
A 3 1 6 T
E R M . B L O C K J 9 C O N N
.
Y E S
The following information is exchanged between the drycooler or the condenser and the water chiller:
Drycooler case
Chiller to Drycooler Drycooler to Chiller
Chiller on/off Drycooler on/off
Free cooling operation
Fan stage fault
Sensor fault
Air-cooled condenser case
Chiller to Air-cooled condenser Air-cooled condenser to Chiller
Chiller on/off DC or condenser on/off
Setpoint Free cooling operation
Pressure value Fan stage fault
Sensor fault
SOFTWARE VERSION UPGRADE
When upgrading from a software version < V09 to a version ≥ V09, the BUS connection wiring on the drycooler
board must be changed from J10 to J9.
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