20
5.15 - Black box function
The Touch Pilot control registers the values of around 20
predefi ned variables every 5 seconds. If an operation alarm
appears, the control saves a data set of 180 registrations (168
preceding the alarm and 12 following it), for a duration of 15
minutes of unit operation.
Each registration is associated with a time schedule defi ned in
hours, minutes and seconds. The control can store a maximum
of 20 data sets in the memory. If the threshold of 20 data sets
is reached, a rotary registration mechanism is triggered (a
new data set deletes the oldest data set). The data sets can be
recovered by a Carrier service technician, using the Carrier
S-Service tool that permits downloading them to a PC and
later deleting them from the unit.
5.16 - Option 150B - Maximum condenser leaving water
temperature = 45°C
When the condenser leaving water temperature reaches 45°C,
the increase in the compressor loading is stopped. The capacity
is now controlled based on the leaving water limit temperature,
if a cooling demand exists.
5.17 - Option 159 - Refrigerant leak detection
This option permits refrigerant leak detection. Two sensors
(not supplied) that detect the refrigerant concentration in
the air must be installed on the unit. If one of the two sensors
detects an abnormal refrigerant level for more than one hour,
an alarm is triggered, without shutting the unit down.
The refrigerant level and the time before triggering an alert
are confi gurable. To modify them, contact Carrier Service.
5.18 - Option 149 - BACnet
The BACnet/IP communication protocol is used by the building
management system or the programmable controllers to
communicate with the Touch Pilot interface. It is activated if
the optional BACnet activation key (dongle) is present on the
electronic control board. This option may be ordered and
installed on site (for software version 3.0 and higher - contact
Carrier Service). The BACnet profi le of the Touch Pilot interface
is B-ASC; refer to the BACnet document included with the
control or contact Carrier Service.
5.19 - Option 313 - Dry cooler
30XWV units may come with the dry cooler option that
enables the control of a Carrier dry cooler. The chiller and the
dry cooler have to be connected through a LEN RS-485.
5.20 - HFO (30XWV-ZE units)
30XWV-ZE chillers using the new HFO-R1234ze refrigerant
(HFO) offer higher effi ciency (higher EER) and have a larger
operating envelope when compared to units with the standard
R-134a refrigerant. For 30XWV units with R-1234ze
(30XWV-ZE), the saturated condensing temperature can
reach a maximum of 55°C (131°F) compared with a maximum
of 50°C for units with R-134a (30XWV).
6 - ACCESS TO TECHNICAL DOCUMENTATION FOR
THE UNIT
Access to the technical documentation is via a web connection
(see chapter 4.2).
Click on the button
to open the web page index for
the technical documentation.
6.1 - Spare parts list
Click on the Spare Parts link to get access to the parts list.
A new web page is displayed.
The DRAWING column includes links to the drawings that
permit identifying the unit components. Click on the link to
show the associated drawing.
IMPORTANT: Please save all data (documents, drawings,
diagrams, etc.), for example, on your computer. If display
memory is erased or the display is replaced, all documents
will be lost. Make sure that all documents are stored and
may be accessed at any time.
