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2
User interface
Abbreviations / meanings ......................................................
2
Safety considerations ...............................................................
2
Introduction................................................................................ 2
Installation considerations .....................................................
3
Models
........................................................................... 3
Power
............................................................................. 3
Installation ..................................................................................
3
Step 1 — User Interface Location...........................
3
Step 2 — Install User Interface ................................
3
Step 3 — Set Nui Installer Configuration .............
6
Climatic curves ........................................................................... 12
Pre-set
curves
.............................................................. 12
Climatic custom curves ............................................. 13
Heating curve adaptation ........................................ 14
Factory configuration mode .................................................. 14
Clock
......................................................................................... 16
Operational and connection information .......................... 16
Error
codes
.................................................................... 16
Fault
code
table
........................................................... 17
Wiring diagram .......................................................................... 18
User interface configuration record..................................... 18
Notes
......................................................................................... 19
Safety consideration
Introduction
Abbreviations / Meanings
Contents
Page
Read and follow manufacturer instructions carefully. Follow
all local electrical codes during installation. All wiring must
conform to local and national electrical codes.
Improper wiring or installation may damage the NUI.
Understand the signal words
DANGER
,
WARNING
, and
CAUTION
. These words are used with the safety--alert
symbol.
DANGER
identifies the most serious hazards which
will result in severe personal injury or death.
WARNING
signifies a hazard which could result in personal injury or
death.
CAUTION
is used to identify unsafe practices which
may result in minor personal injury or product and property
damage.
NOTE
is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
Carrier’s NUI series programmable user interface is wall--
mounted, low--voltage user interface which maintains room
temperature by controlling the operation of a heating and/
or air conditioning system. “Heat pump”, “ Air conditioner”
and “Heat only” are available, with the present versions. A
variety of features are provided including separate heating
and cooling set-points, keypad lockout, backlighting, and
built--in installer test etc. Programming features include
7--day (all days the same), 5/2 (Mon--Fri and Sat--Sun) and
1-day (all 7 days individually) with 2 or 4 or 6 periods per
day.
This Installation Instruction covers installation,
configuration, and startup of NUI. For operational details,
consult the Owner’s Manual.
NUI User Interface Comfort Series 33AW-CS1
SUI
User Interface 33AW-RC1
CC
Climatic Curve
CDU Compressor Device Unit
GMC Global Module controls
Stb. Stand by
LWT Leaving water Temperature
EWT Enter water Temperature
REFR. Refrigerant Temperature
TE
Outdoor Heat Exchange Sensor
TD
Discharge Temperature Sensor
WSP Water Set Point
HP
Heat Pump
OAT Outdoor Air Temperature
FR
Mode Frequency Reduction