Unique WS Series User Manual

42 pages

To Next Page

To Previous Page

- 25

Series

Advanced air conditioning systems

9. Electrical Wiring Diagrams

9.1 Electrical Wiring Diagram – Single Phase Cooling Only – Model 260U

HP – High pressure control ALFA 123U – Power switch unit

LP – Low pressure control ALFA 260U – Room Thermostat

CC – Compressor contactor

WS Type 12 15 22 28 36 43 48 54 61 75 85 102 120 144

MAIN POWER Cable

Cross Section Area mm²

2.5 2.5 2.5 4 4 6 - - - - - - - -

Questions and Answers:

S
Sharon MurrayAug 21, 2025
Why is my Unique WS Air Conditioner not starting?
- K
  Karen MorrisAug 21, 2025
  Your Unique Air Conditioner might not be starting due to a few reasons: * The power supply to the unit might not be properly connected. * A fuse might be blown. * The electric supply wall socket could be defective. To resolve this, check the power plug connection in the wall socket. If the red LED on the RST Controller is off, change the RST wires. If the LED is on, check the phase voltage. Also, reset the automatic circuit breaker or replace the line fuse. If the wall socket is defective, repair or replace it.
K
Kelly PetersonAug 23, 2025
What causes Freezing Conditions at Evaporator Coil in Unique WS Air Conditioner?
- E
  Emma GibsonAug 23, 2025
  Freezing conditions at the evaporator coil of your Unique Air Conditioner may occur due to: * Clogged air filter. * Faulty capacitor. * Faulty fan motor. * Air discharge shutters being too closed. * Lack of refrigerant. To address this, clean the filter, replace the capacitor, replace the fan motor, open the air discharge shutters, and check for leaks and add refrigerant.

Unique WS Series Specifications

General

Brand	Unique
Model	WS Series
Category	Air Conditioner
Language	English

Summary

SAFETY FIRST!

INTRODUCTION

Product Overview

Overview of UNIQUE-WS air conditioners, their applications, and features.

Manufacturing Options

Describes horizontal/vertical execution and standard layout setups (SL, SR, FL, FR).

Nameplate Information

Details the information found on the unit's nameplate for identification.

TECHNICAL DATA TABLES

WS Package Units

Technical specifications for WS Series Package Units, including capacities and dimensions.

WSC Water Source Console Units

Technical specifications for WSC Water Source Console units, covering various parameters.

DIMENSIONS AND WEIGHTS

Split Condenser Units

Details the dimensions, weights, and refrigerant tubing connections for split condenser units.

HEATING ELEMENT RECOMMENDATIONS

Heating Element Specifications

Provides recommendations for heating element kW, current, and fuse amp for different models.

REFRIGERATION CYCLES

Cooling Only Cycle

Diagram illustrating the refrigeration cycle for cooling-only operation.

Heat Pump Cycle

Diagram illustrating the refrigeration cycle for heat pump operation.

INSTALLATION INSTRUCTIONS

General Installation Guidelines

General instructions and precautions for installing the air conditioner unit.

Electrical Requirements

Specifies the electrical requirements and safety considerations for installation.

Typical WS Installation

Illustrates the typical installation process with numbered components.

Unit Location and Installation

Guidance on selecting the unit location and mounting methods.

Connecting the Water Piping

Instructions for connecting the water piping, including strainer and cut-off valves.

Connecting the Drain Hose

Instructions for connecting the drain hose to the unit.

Connecting the Ducting Work

Recommendations for connecting ducting for optimal air conditioning results.

Connecting the Temperature Sensor Bulbs

Information on connecting and replacing temperature sensor bulbs.

CONTROL SYSTEM AND POWER CONNECTION

Installing the Thermostat

Step-by-step guide for installing the wall-mounted thermostat.

Terminal Box Location

Details the location of the terminal box for single-phase units.

Terminal Box Location – 3 Phase Unit

Details the location of the terminal box for three-phase units.

ELECTRICAL WIRING DIAGRAMS

Single Phase Cooling Only – Model 260U

Wiring diagram for single-phase cooling-only models.

3 Phase Cooling Only – Model 260U

Wiring diagram for three-phase cooling-only models.

Single Phase with Electrical Heating Elements – Model 260U

Wiring diagram for single-phase units with electrical heating elements.

3 Phase with Electrical Heating Elements – Model 260U

Wiring diagram for three-phase units with electrical heating elements.

Single Phase with Heat Pump – Model 260U

Wiring diagram for single-phase units with heat pump functionality.

3 Phase With Heat Pump – Model 260U

Wiring diagram for three-phase units with heat pump functionality.

TROUBLESHOOTING GUIDE

Troubleshooting Notes

Important notes and general advice before starting troubleshooting.

Failure Code Troubleshooting

Guide to troubleshooting based on displayed failure codes (ER1-ER9).

General Troubleshooting

Addresses common symptoms and their probable causes and corrective actions.

Poor Cooling Troubleshooting

Troubleshooting steps for issues related to poor cooling performance.

Poor Heating Troubleshooting

Troubleshooting steps for issues related to poor heating performance.

CONTROL PROGRAMS AND OPERATION INSTRUCTIONS

General Control and Operation

Explains system protection, restart procedures, and sensor controls.

Modes of Operation and Uses

Details different operating modes like Cooling, Heating, and Auto.

Wall Mounted Thermostats a 260U

Explains the functions and display of the wall-mounted thermostat.