Carrier 50ZH Instruction Manual download pdf (Page 2)

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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

1 2 3 4 5 6 7 ... 35 36

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Carrier 50ZH Instruction Manual Page 2

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