9
GENERAL FEATURES
Accessories
Rubber vibration dampers
Allow to reduce the transmission to the unit support plane of the mechanical vibrations generated by the com
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pressor and by the fans in their normal operating mode.
Coil protection grille
Protects the external surface of the finned coil..
Tank antifreeze
electrical heater
Activated together with the antifreeze electrical heater of the plate heat exchanger, it has the task to keep the
water in the buffer tank at a temperature high enough to avoid ice generation during winter.
Remote control
It is suitable for wall mounting and reports all the control and visualization functions available on the user inter
-
face placed on the unit. It therefore allows the complete remote control of the unit.
Modbus serial interface
on RS485
It allows to communicate with the unit controller and to view the operating conditions of the unit through Modbus
communication protocol. The RS485 serial line ensures the signal quality up to distances of about 1200 meters
(that can be extended by means of proper repeaters).
Programmer clock
It allows the unit to be turned on and off according to a set program, through the digital input available on the
unit wiring board (remote stand by).
Phase sequence and
voltage controller
It checks not only the presence and correct order of the power supply phases but also the voltage level on each
phase and avoid the unit to operate with voltage levels outside the permitted limits.
Option "Storing and pumping module"
Pump (VP)
(standard, high head or modulating)
Option "Integrative electrical heaters"
Tank and pump (VA)
(standard, high head or modulating)
Standard in the flow
(only for VB and VP versions)
In the tank (standard or upsized)
(only for VA version)
Summary of Contents for RXA 11.1
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