12
SETV Variable set point with remote signal
The accessory allows the set point to be varied continuously between two preset values, a maximum and a
minimum, depending on an external signal that can be of the 0-1V, 0-10V or 4-20mA type.
The set point temperatures and the type of signal to use for the adjustment must be specified when ordering.
For optimization of the unit, reference will be made to the lower set point in chiller mode and the higher set
point in heat pump mode.
Unless otherwise specified in the order, the controller will be set at the factory with 0-10V analogue input and
with the following temperatures:
•
in chiller mode, 0V will correspond to a set point of 7°C and 10V will correspond to a set point of 12°C
•
in heat pump mode (only for HPW and OH units), 0V will correspond to a set point of 45°C and 10V will
correspond to a set point of 40°C
DAM
Double power supply with manual switching
A manual switch to which to connect two separate power supply lines (for example, one from the mains power
line and one from the uninterruptible power supply unit) is installed in the electrical control panel of the unit.
The switching from one line to another is manual and obligatorily requires passing through the OFF position.
DAA
Double power supply with automatic switching
A motor-driven automatic switch to which to connect two separate power supply lines (for example, one from
the mains power line and one from the uninterruptible power supply unit) is installed in the electrical control
panel of the unit.
The switching from one line to another is automatic and obligatorily requires passing through the OFF position.
When this accessory is requested, the power supply of the unit must compulsorily include neutral.
ENM
Energy meter
The accessory allows the main electrical quantities (including voltage, current, power) to be read on the three
phases, via current transformer.
This accessory communicates with the BlueThink controller to supervise the monitored data. The values meas
-
ured are then made available through the unit display and the web server.
ENML Energy meter with current limiter
The accessory allows the main electrical quantities (including voltage, current, power) to be read on the three
phases, via current transformer.
This accessory communicates with the BlueThink controller to supervise the monitored data. The values meas
-
ured are then made available through the unit display and the web server.
This accessory is designed to limit the max. current the unit can absorb. The controller instantly checks the
absorption levels and, where necessary, it applies a forced capacity reduction that keeps the absorbed current
value below the stored threshold.
GFC
FC/NG management
This option is available only for the basic model (chiller).
The option includes configuration of the BlueThink controller of the unit, in order to carry out the free-cooling
mode, without using glycol.
The option also includes integration in the machine of: free-cooling pump relay, consent for external dry cooler,
system return probe and dry-cooler inlet and outlet probes.
The components required for making the system, and also the hydraulic and electrical connections to the unit,
are to be provided by the customer.
More specifically, the system will consist of:
•
a water-water heat exchanger that carries out the separation between the source side (glycol) and the user
side (non-glycol).
•
a 3-way modulating valve that feeds the free cooling circuit and carries out condensation control when the
unit is working in mixed chiller/free cooling mode.
• a source-side pump
