Air-condensed water chillers and heat pumps YLCA / YLHA

1 Technical Information
1.1 General Information
1.1.1 Nomenclature
1.1.2 General description of the unit
1.1.3 Models available and capacities
1.1.4 Features and advantages
1.1.5 Technical specifications
1.2 Safety instructions
1.3 Icons used in this document
1.4 Instructions for storage, transport, loading and unloading of the unit
1.4.1 Inspection
1.4.2 Disposal of packaging
1.4.3 Disposal of the unit
1.4.4 Handling
1.5 Selection guide (YLCA/YLHA)
1.5.1 Selection guide with glycol (cooling only units)
1.6 Technical data
1.6.1 Limits of use
1.6.2 Correction Factors
1.6.3 Physical data
1.6.4 Electrical specifications
1.7 Measurements, clearances and accesses
1.7.1 Clearances
1.7.2 Dimensions and hydraulic connections (models YLCA/YLHA 40)
1.7.3 Dimensions and hydraulic connections (models YLCA/YLHA 50 and 60)
1.7.4 Dimensions and hydraulic connections (models YLCA/YLHA 80)
1.7.5 Dimensions and hydraulic connections (models YLCA/YLHA 100, 120 and 150)
1.8 Capacities YLHA
1.8.1 Cooling capacities YLHA 40 ÷ 150
1.8.2 Cooling capacities YLHA 40 ÷ 150 (35% ethylene glycol)
1.8.3 Heating capacities YLHA 40 ÷ 150
1.9 Capacites YLCA
1.9.1 Cooling capacities YLCA 40 ÷ 150
1.9.2 Cooling capacities YLCA 40 ÷ 150 (35% ethylene glycol)
1.10 Cooling operation and hydraulic diagrams
1.10.1 YLCA models: cooling only
1.10.2 YLHA models: heat pump
1.11 Instructions for installation and connection of the unit
1.11.1 Characteristics of the location
1.11.2 Specifications for the foundation or anchoring of the unit
1.11.3 Hydraulic connections
1.11.4 Rotational direction of Scroll compressors
1.11.5 Preparation and connecting to the various utilities
1.12 Unit sound power spectrum data
1.13 Operating instructions
1.13.1 Operating instructions μC2 (YLCA/YLHA 40)
1.13.2 Operating instructions μC2 (YLCA 50, 60 and 80)
1.13.3 Operating instructions μC2 (YLHA 50, 60 and 80)
1.13.4 Operating instructions μC3 (YLCA / YLHA 100, 120 and 150)
1.14 Wiring diagrams
1.14.1 Unit wiring diagrams
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Service Manual EUWA/Y5-30HB/C(Z)

Service Manual EUWA/Y5-30HB/C(Z)
Small air-cooled water chillers

Contents
1 Introduction
1.1 About This Manual
Part 1
System Outline 1-1
1 General Outline
1.1 What Is in This Chapter
1.2 Technical Specifications
1.3 Electrical specifications
1.4 Outlook Drawing
2 Piping Layout
2.1 What Is in This Chapter
2.2 Functional Diagram Refrigeration Circuit for EUWA5-30HB/C(Z)
2.3 Main Parts Refrigeration Circuit for EUWA5-30HB/C(Z)
2.4 Functional Diagram Refrigeration Circuit for EUWY5-30HB/C,
EUWA5-30HB/C with Glycol Application
2.5 Main Parts Refrigeration Circuit EUWY5-30HB/C, EUWA5-30HB/C
with Glycol Application
3 Wiring Layout
3.1 What Is in This Chapter
3.2 Main functions of the chiller
3.3 Wiring Diagrams
3.4 Field Wiring
Part 2
Functional Description 2-1
1 Functional Control
1.1 What Is in This Chapter
1.2 Operation Range
1.3 Operation Flowchart
1.4 Defrost Principle (only for EUWY5-30HB/C(Z))
1.5 Defrost Circuit Control
1.6 Thermostat Control
1.7 Head Pressure Control for EUWA/Y5-10HB(Z)
1.8 Head Pressure Control for EUWA/Y15-30HC(Z)
1.9 Freeze-up Control
2 The Controller for the EUWA/Y5-10HB(Z) Chillers
2.1 What Is in This Chapter
2.2 The EUWA/Y5-10HB(Z) Controller
2.3 Start/Stop, Cool/Heat and Temperature Setting
2.4 What Happens in Case of an Alarm or a Warning
2.5 Settings: Direct and User Parameters
2.6 How to Read or Adjust Parameter Settings: the Programming Procedure
3 The Controller for the EUWA/Y15-30HC(Z) Chillers
3.1 What Is in This Chapter
3.2 The EUWA/Y15-30HC(Z) Controller
3.3 Start/Stop, Cool/Heat and Temperature Setting
3.4 What Happens in Case of an Alarm
3.5 Menu Overview
3.6 How to Read or Adjust Parameter Settings: the Programming Procedure
3.7 Read-out Menu
3.8 Set Points Menu
3.9 User Settings Menu
3.10 Software Timers Menu
3.11 History Menu
3.12 Info Menu
3.13 Input /Output Menu
3.14 Password Menu
Part 3
Troubleshooting 3-1
1 Overview of Inputs and Outputs
1.1 What Is in This Chapter
1.2 Overview of Inputs and Outputs of EUWA/Y5-10HB(Z)
1.3 Overview of Inputs and Outputs of EUWA/Y15-30HC(Z)
2 Overview of Fault Indications and Safeties
2.1 What Is in this Chapter
2.2 Fault Indication EUWA/Y5-10HB(Z)
2.3 Fault Indication EUWA/Y15-30HC(Z)
2.4 Safeties Overview
3 Checking the Inputs and Outputs
3.1 What Is in This Chapter
3.2 Checking the Temperature Sensors
3.3 Checking the Digital Inputs and Outputs
3.4 Checking the Power Supply and Fuses
4 Troubleshooting
4.1 What Is in This Chapter
4.2 Items to Be Checked
4.3 General Repair Procedures
4.4 Unlocking the Keyboard
4.5 Procedure for controller Changing (EUWA/Y5-10HB(Z)
4.6 Procedure for PCB Changing (EUWA/Y15-30HC(Z)
4.7 Procedure to Set the Carell Controller
4.8 Control of function of 4 way valve(EUWY5-30HB/C)
Part 4
Commissioning and Test Run 4-1
1 Pre-Test Run Checks
1.1 What Is in This Chapter
1.2 General Checks
1.3 Water Piping Checks
1.4 Electrical Checks
2 Test Run & Operation Data
Part 5
Maintenance 5-1
Index i
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