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© 2014 Pentair Equipment Protection
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TABLE OF CONTENTS
RECEIVING THE AIR CONDITIONER ................................................................................................................................................................. 3
HANDLING AND TESTING THE AIR CONDITIONER ......................................................................................................................................... 3
HOW TO READ MODEL NUMBERS ................................................................................................................................................................... 3
TECHNICAL INFORMATION .............................................................................................................................................................................. 4
Sequence of Operation ............................................................................................................................................................................................4
Heating ............................................................................................................................................................................................................4
Cooling .............................................................................................................................................................................................................4
Standard and Optional Component Operation .......................................................................................................................................................4
Thermostat ......................................................................................................................................................................................................4
Remote Access Control (optional) ..................................................................................................................................................................4
Head Pressure Control (optional) ...................................................................................................................................................................4
200V to 230V Transformer (N280425GXXX only) ............................................................................................................................................4
115V/230V to 10V Transformer (optional) ......................................................................................................................................................4
115V/230V to 24V Transformer and Relay (optional) .....................................................................................................................................4
For cooling (75-100 F range): .........................................................................................................................................................................4
For heating (55-65 F range): ...........................................................................................................................................................................4
Schematics and Wiring Diagrams for Thermostat Control ...................................................................................................................................5
Generic 1-Phase Schematic Except 230V 50hz (actual unit options may vary) ............................................................................................5
Generic 230V 50hz 1-Phase Schematic (actual unit options may vary) ........................................................................................................5
Generic 3-Phase Schematic (actual unit options may vary) .........................................................................................................................6
Generic 1-Phase Wire Diagram Except 230V 50hz (actual unit options may vary) ......................................................................................7
Generic 230V 50hz 1-Phase Wire Diagram (actual unit options may vary) ..................................................................................................8
Generic 3-Phase Wire Diagram (actual unit options may vary) ....................................................................................................................9
DIMENSIONAL DRAWING ............................................................................................................................................................................... 10
With Thermostats ..................................................................................................................................................................................................10
INSTALLATION INSTRUCTIONS ...................................................................................................................................................................... 11
REMOTE ACCESS CONTROL (optional) .......................................................................................................................................................... 12
INTRODUCTION .....................................................................................................................................................................................................12
ENERGIZING THE CONTROLLER .........................................................................................................................................................................12
CONTROL STATUS INDICATION ...........................................................................................................................................................................12
DISPLAYING AND CHANGING PROGRAM VARIABLES ........................................................................................................................................13
OPERATING PARAMETERS ...................................................................................................................................................................................13
ALARM PARAMETERS ..........................................................................................................................................................................................13
DISPLAYING TEMPERATURE SENSOR #2 ...........................................................................................................................................................13
COMPRESSOR RESTART TIME DELAY .................................................................................................................................................................13
ALARM OUTPUT CONTACT ...................................................................................................................................................................................13
ALARM INPUT CONNECTION ...............................................................................................................................................................................14
ALARM CONDITION DISPLAY ...............................................................................................................................................................................14
AIR CONDITIONER UNIT COMMUNICATION FEATURES .....................................................................................................................................14
USB COMMUNICATION .................................................................................................................................................................................14
ETHERNET COMMUNICATION .....................................................................................................................................................................14
USING THE PC INTERFACE TOOL ........................................................................................................................................................................15
USB COMMUNICATION MODE .....................................................................................................................................................................15
ETHERNET COMMUNICATION MODE ..........................................................................................................................................................16
Remote Access Control Pin-out ...................................................................................................................................................................... 17
Schematics and Wiring Diagrams for Remote Access Control ...........................................................................................................................18
Generic 1-Phase Schematic Except 230V 50hz (actual unit options may vary) ..........................................................................................18
Generic 230V 50hz 1-Phase Schematic (actual unit options may vary) ......................................................................................................18
Generic 1-Phase Wire Diagram for Remote Access Control (actual unit options may vary) .....................................................................19
230V 50hz 1-Phase Wire Diagram for Remote Access Control (actual unit options may vary) .................................................................20
DIMENSIONAL DRAWING ............................................................................................................................................................................... 21
With Remote Access Control ................................................................................................................................................................................21
INSTALLATION INSTRUCTIONS WITH REMOTE ACCESS CONTROL ............................................................................................................ 22
MAINTENANCE ................................................................................................................................................................................................ 23
Compressor ...........................................................................................................................................................................................................23
Inlet Air Filter ........................................................................................................................................................................................................23
How To Remove, Clean or Install a New Inlet Air Filter ......................................................................................................................................23
Condenser and Evaporator Air Movers ................................................................................................................................................................24
Refrigerant Loss....................................................................................................................................................................................................24
Refrigerant Properties Chart (R134a) ..................................................................................................................................................................24
Unit Characteristics ..............................................................................................................................................................................................25
Functional Data .....................................................................................................................................................................................................25
SERVICE DATA ................................................................................................................................................................................................. 26
Components List ...................................................................................................................................................................................................26
N28-0416-GXXX Pressure Tables .........................................................................................................................................................................28
N28-0426-GXXX Pressure Tables .........................................................................................................................................................................29
TROUBLE SHOOTING ...................................................................................................................................................................................... 30
Basic Air Conditioning Trouble Shooting Check List - Thermostat Version .......................................................................................................30
Symptoms and Possible Causes - Thermostat Version ......................................................................................................................................31
Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version ....................................................................................32
Symptoms and Possible Causes - Remote Access Control Version ...................................................................................................................33
WARRANTY ...................................................................................................................................................................................................... 34
RETURN AND REPAIR POLICY ....................................................................................................................................................................... 34
LIMITATION OF LIABILITY ............................................................................................................................................................................... 35