Technical data

i-KI(R) MTD
i-KI(R)_MTD_0031_201110_EN HFC 410A
5
The NADISYSTEM electronic controller is based on an innova-
tive and efficient approach to building air-conditioning.
Energy is only consumed when necessary and the energy
sources are used based on availability, efficiency and cost, giv-
ing priority to renewable sources, where available.
The first significant advantage of introducing a single integrated
control system is optimisation of energy savings through coordi-
nation between the different system components, eliminating
inefficiencies in communication, simplifying installation and
reducing the number of controllers.
NADISYSTEM ensures dynamic control of water outlet temper-
ature according to real needs in the building and the outside air
temperature, optimising comfort and reducing wasted energy.
The remote keypad supplied with the unit can be used to freely
set the room temperature, humidity, operating mode, domestic
hot water production and operating times for each zone.
The NADISYSTEM control system for residential applications
gives high operating flexibility by controlling the secondary cir-
cuits, that is, activating zone pumps and valves depending on
the room temperature set on the remote keypad, and by con-
trolling mixing valves to ensure the correct water temperature in
radiant systems according to the climate conditions set for each
circuit.
There are 15 different types of pre-configured system for quick
and easy installation, with the possibility to manage up to 5
remote keypads for controlling thermal load in likewise zones.
The advanced PRANA controller also allows integration of solar
panels for the domestic hot water production, giving priority to
direct solar energy, if available, and increasing the use of
renewable sources while also managing traditional sources,
such as electric heaters or boilers.
The controller can manage up to four 4 heat pumps connected
in cascade to increase capacity in applications with multiple
occupied areas, such as hotels, schools, apartment blocks,
offices and shopping centres.
The units are managed in master-slave mode, with the master
unit responsible for processing the information and sending it to
the slave units.
This ensures fine control over the capacity delivered, without
decreasing performance, and more precise system sizing.
NADISYSTEM can determine how many cascaded units are
needed to guarantee domestic hot water production, all or just
one, according to requirements.
The controller also balances compressor operating hours based
on time logic, activating the units in rotation, and where neces-
sary excluding any units that are momentarily out of service,
without interrupting operation of the cascade as a whole.
Moreover, the controller modulates fan operation for optimum
condensation or evaporation, depending on the operating
mode, allowing domestic hot water production even in summer
with outside temperatures up to 45°C, and reducing noise at
night.
NADISYSTEM also allows easy service, being interfaceable to
supervision systems for remote maintenance by specialist tech-
nicians, as well as remote control of certain functions, such as:
la remotazione di alcuni comandi come:
- on/off
- cooling/heating operation
- heating system/domestic hot water priority
- shutdown due to electricity rate
Main functions
- Wired remote keypad with backlit display, complete with tem-
perature and humidity probe
- Calculation of dew point and increase in water outlet tempera-
ture for underfloor systems, possibility to enable a dehumidifier
- Operating parameters with dedicated user and installer
menus to configure the type of system
- Weekly timer for setting 6 daily time bands
- Outside air temperature probe to control the system water
temperature set point based on heating and cooling compen-
sation curves. Fixed point operation also available.
- Cooling, heating operating modes, automatic mode changeover
- Domestic hot water production
- Supplementary electric heater management for domestic hot
water storage and Legionella prevention cycle
- Domestic hot water recirculation by timer or flow switch
- External resource (boiler or electric heater) management as
supplementary or sole source of heat
- Cascaded management of up to 4 heat pumps
- Different systems solutions by configuring the controller and
using dedicated expansion modules (accessories), up to 5
zones with the possibility to control different temperature
according to the selected compensation curves.
- Alarm signals
- Frost protection management based on inside or outside air
temperature or water temperature, to protect the system pipes
and heat exchangers inside the unit.
2. ELECTRONIC CONTROLLER
HOT WATER
FLOOR
HEATING
RADIATORS
FAN COIL
SOLAR
INTEGRATION
AUXILIARY
SOURCE