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Legend
1
NTC controller
2
Secondary communication bus
3
User interface connection
4 IR2
5 ZUI2
6 CRC2
A Room A
B Room B
Features and advantages
■■ A wide range of user interfaces
Depending on the application, two user interface types
can be selected:
-- A simplified wired analogue user interface (SUI) that
can be wall-mounted
-- A wired communicating user interface (CRC2) that
can be wall-mounted or incorporated in compatible
terminal fan coils (42N)
-- An infrared user interface (IR2) for use together
with a wall-mounted infrared received or a receiver
incorporated on compatible terminal fan coils (42GW)
-- A multi-function user interface (ZUI) that can control
comfort, lights and blinds within a Carrier system
CONTROLS
■■ The NTC controller controls and optimises the operation
of hydronic terminal fan coil units. It is a microprocessorbased CCN (Carrier Comfort Network) compatible
communicating controller with energy-saving algorithms.
■■ Energy-saving algorithms manage water valve operation
and fan speed control simultaneously to ensure minimum
energy consumption whilst maximising comfort conditions
for the occupant.
■■ Factory-installed on terminal fan coils
The NTC controller is factory-installed on the terminal fan
coil; the assembly is also factory-tested. As a result, field
installation is extremely simple.
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