Table Of Contents; Abbreviations / Meanings; Safety Considerations; Introduction - Carrier Nui 33AW-CS1 Installation Manual

Contents
Abbreviations / meanings ......................................................
Safety considerations ...............................................................
Introduction................................................................................
Installation considerations .....................................................
Models ...........................................................................
Power .............................................................................
Installation ..................................................................................
Step 1 - User Interface Location...........................
Step 2 - Install User Interface ................................
Step 3 - Set Nui Installer Configuration .............
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
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

Introduction

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
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Abbreviations / Meanings

2 NUI User Interface Comfort Series 33AW-CS1
2 SUI User Interface 33AW-RC1
2 CC Climatic Curve
3 CDU Compressor Device Unit
3 GMC Global Module controls
3 Stb. Stand by
3 LWT Leaving water Temperature
3 EWT Enter water Temperature
3 REFR. Refrigerant Temperature
6 TE Outdoor Heat Exchange Sensor
TD Discharge Temperature Sensor
WSP Water Set Point
HP Heat Pump
OAT Outdoor Air Temperature
FR Mode Frequency Reduction
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.
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.
User interface