Daikin REYQ14T7Y1B User Manual

Installation and operation manual
VRV IV system air conditioner
English
Installation and operation
manual
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Daikin REYQ14T7Y1B Specifications

General

Brand	Daikin
Model	REYQ14T7Y1B
Category	Air Conditioner
Language	English

Summary

4 Preparation

4.2 Preparing refrigerant piping

Specifications and precautions for refrigerant piping installation.

4.2.1 Refrigerant piping requirements

Specifications and precautions for refrigerant piping installation.

4.2.2 To select the piping size

Guidance on choosing the correct piping diameter based on unit capacity.

4.2.3 To select refrigerant branch kits

Procedure for selecting appropriate refrigerant branch kits.

4.2.4 Multiple outdoor units: Possible layouts

Guidelines for routing and connecting piping for multiple outdoor units.

4.3 Preparing electrical wiring

4.3.1 Safety device requirements

5 Installation

5.1 Opening the units

5.1.1 To open the outdoor unit

5.1.2 To open the electrical component box of the outdoor unit

5.2 Mounting the outdoor unit

5.2.1 To provide the installation structure

5.3 Connecting the refrigerant piping

5.3.1 To route the refrigerant piping

5.3.2 To connect the refrigerant piping to the outdoor unit

5.3.3 To connect the multi connection piping kit

5.3.4 Multiple outdoor units: Knockout holes

5.3.5 To protect against contamination

5.3.6 Using the stop valve and service port

5.3.7 To remove the pinched pipes

5.4 Checking the refrigerant piping

Overview of procedures for checking refrigerant piping installation.

5.4.1 About checking the refrigerant piping

Overview of procedures for checking refrigerant piping installation.

5.4.2 Checking refrigerant piping: General guidelines

General guidelines for checking refrigerant piping.

5.4.3 Checking refrigerant piping: Setup

Setup procedures for checking refrigerant piping, including valve states.

5.4.4 To perform a leak test

Steps for conducting a leak test on the refrigerant piping.

5.4.5 To perform vacuum drying

Procedure for vacuum drying the refrigerant piping system.

5.5 To insulate the refrigerant piping

5.6 Charging refrigerant

Safety precautions and warnings before charging refrigerant.

5.6.1 Precautions when charging refrigerant

Safety precautions and warnings before charging refrigerant.

5.6.2 About charging refrigerant

Overview of methods for charging additional refrigerant.

5.6.3 To determine the additional refrigerant amount

Method for calculating the required additional refrigerant charge.

5.6.4 To charge refrigerant: Flow chart

Flowchart illustrating refrigerant charging procedures and options.

5.6.5 To charge refrigerant

Detailed steps for charging refrigerant, including pre-charging and automatic/manual charging.

5.6.6 Step 6a: To automatically charge refrigerant

Procedure for automatic refrigerant charging with system limitations.

5.6.7 Step 6b: To manually charge refrigerant

Procedure for manual refrigerant charging operation.

5.6.8 Error codes when charging refrigerant

List and explanation of error codes encountered during refrigerant charging.

5.6.9 Checks after charging refrigerant

Final checks to be performed after refrigerant charging.

5.7 Connecting the electrical wiring

5.7.1 Field wiring: Overview

5.7.2 Guidelines when knocking out knockout holes

5.7.3 To route and fix the transmission wiring

5.7.4 To connect the transmission wiring

5.7.5 To finish the transmission wiring

5.7.6 To route and fix the power supply

5.7.7 To connect the power supply

Procedure for connecting the main power supply to the unit.

6 Configuration

6.1 Making field settings

6.1.1 About making field settings

6.1.2 Field setting components

6.1.3 To access the field setting components

6.1.4 To access mode 1 or 2

6.1.5 To use mode 1

6.1.6 To use mode 2

6.1.7 Mode 1: Monitoring settings

6.1.8 Mode 2: Field settings

6.2 Using the leak detection function

Information on the automatic leak detection feature and its activation.

6.2.1 About automatic leak detection

Information on the automatic leak detection feature and its activation.

7 Commissioning

7.1 Precautions when commissioning

Important safety precautions to observe before commissioning.

7.2 Checklist before commissioning

A checklist of items to verify before starting the commissioning process.

7.3 About the test run

Overview of the test operation procedure and its objectives.

7.4 To perform a test run

Step-by-step guide for performing the system test run.

8 Troubleshooting

8.1 Solving problems based on error codes

Guide to resolving issues using malfunction codes and error tables.

8.2 Error codes: Overview

A table listing and explaining various error codes and their causes.

12 Operation

12.1 Operation range

12.2 Operating the system

12.2.1 About operating the system

12.2.2 About cooling, heating, fan only, and automatic operation

12.2.3 About the heating operation

12.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)

12.2.5 To operate the system (WITH cool/heat changeover remote control switch)

12.3 Using the dry program

12.3.1 About the dry program

12.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)

12.3.3 To use the dry program (WITH cool/heat changeover remote control switch)

12.4 Adjusting the air flow direction

12.4.1 About the air flow flap

12.5 Setting the master user interface

12.5.1 About setting the master user interface

13 Maintenance and service

13.1 About the refrigerant

Information about the refrigerant type, GWP, and handling precautions.

13.2.2 Recommended maintenance and inspection

Recommendations for regular maintenance and inspection of the unit.

14 Troubleshooting

14.1 Error codes: Overview

List and explanation of error codes appearing on the user interface.