Daikin REYA8A7Y1B User Manual

Installation and operation manual
VRV 5 heat recovery
English
Installation and operation manual
VRV 5 heat recovery
REYA8A7Y1B
REYA10A7Y1B
REYA12A7Y1B
REYA14A7Y1B
REYA16A7Y1B
REYA18A7Y1B
REYA20A7Y1B
REMA5A7Y1B

Daikin REYA8A7Y1B Specifications

General

Brand	Daikin
Model	REYA8A7Y1B
Category	Heating System
Language	English

Summary

Specific installer safety instructions

Instructions for equipment using R32 refrigerant

Details safety precautions specific to handling equipment that uses R32 refrigerant.

Electrical installation

Provides essential safety guidelines for electrical connections and wiring.

Commissioning

Troubleshooting

User safety instructions

Instructions for safe operation

Troubleshooting

About the units and options

Special requirements for R32 units

Installation space requirements

Specifies the necessary space and ventilation requirements for R32 unit installations.

System layout requirements

Details requirements for system layout, including refrigerant piping and unit connections for R32.

Outdoor unit installation

Covers specific requirements for installing the outdoor unit, especially concerning R32 safety.

Indoor unit installation

Provides guidance on installing indoor units, referencing compatibility and safety for R32.

BS unit installation

Outlines installation requirements for the Branch Selector unit, including safety measures for R32.

Piping requirements

Specifies rules for installing refrigerant piping, focusing on safety and compliance for R32 systems.

Remote controller requirements

Details requirements for compatible remote controllers, including safety features for R32.

About the charge limit

Explains how to determine the maximum allowable refrigerant charge limit for system safety.

To determine the charge limit

Provides methods and tables to calculate the maximum allowable refrigerant charge based on room size.

Unit installation

Preparing the installation site

Installation site requirements of the outdoor unit

Additional installation site requirements of the outdoor unit in cold climates

Piping installation

Mounting the outdoor unit

Preparing refrigerant piping

Guidance on preparing refrigerant piping, including material selection and thickness requirements.

To select the piping size

To select refrigerant branch kits

To route the refrigerant piping

To connect the refrigerant piping to the outdoor unit

Using the stop valve and service port

To remove the pinched pipes

Checking the refrigerant piping

Outlines the process for checking refrigerant piping integrity through leak tests and vacuum drying.

To perform a leak test

Detailed steps for conducting leak tests on the refrigerant piping system using specific methods.

Charging refrigerant

Precautions when charging refrigerant

Essential safety warnings and precautions to follow before and during refrigerant charging.

To determine the additional refrigerant amount

Explains how to calculate the necessary amount of additional refrigerant for system charging.

To charge refrigerant: Flow chart

To charge refrigerant

Error codes when charging refrigerant

Lists error codes that may occur during refrigerant charging and their corresponding solutions.

Checks after charging refrigerant

Electrical installation

About electrical compliance

Details compliance with electrical standards and regulations for system installation.

Safety device requirements

Specifies the required safety devices, such as fuses and circuit breakers, for the electrical system.

To route and fix the transmission wiring

To connect the transmission wiring

To route and fix the power supply

To connect the power supply

Configuration

Making field settings

Introduces the process of configuring the system by inputting field settings via the unit's PCB.

Mode 2: Field settings

Covers various field settings like target temperatures, leak detection intervals, and maintenance cycles.

Automatic leak detection activation.

Explains how to activate and configure the automatic leak detection function for system safety.

Commissioning

Precautions when commissioning

Checklist before commissioning

A checklist of essential items to verify before commencing the commissioning of the system.

To perform a BS unit test run

About the BS unit test run

To perform a test run

Step-by-step guide for executing the system test run to verify correct operation and settings.

Troubleshooting

Solving problems based on error codes

Guides users on how to resolve issues by referencing error codes and their solutions.

Error codes: Overview

A comprehensive list of error codes, their causes, and potential solutions for system malfunctions.

Refrigerant leak detection system

Explains how the refrigerant leak detection system operates and responds to detected leaks.

Technical data

Wiring diagram: Outdoor unit