Daikin 4MXM80A2V1B9 User Manual

2 | General safety precautions
Installer reference guide
9
2MXM-A9, 3MXM-A9, 4MXM-A9, 5MXM-A9
R32 Split series
4P600463-7G – 2022.09
WARNING
If one or more rooms are connected to the unit using a duct system, make sure:
▪ there are no operating ignition sources (example: open flames, an operating gas
appliance or an operating electric heater) in case the floor area is less than the
minimum floor area A (m²).
▪ no auxiliary devices, which may be a potential ignition source, are installed in the
duct work (example: hot surfaces with a temperature exceeding 700°C and
electric switching device);
▪ only auxiliary devices approved by the manufacturer are used in the duct work;
▪ air inlet AND outlet are connected directly to the same room by ducting. Do NOT
use spaces such as a false ceiling as a duct for the air inlet or outlet.
WARNING
▪ Take precautions to avoid excessive vibration or pulsation to refrigeration piping.
▪ Protect the protection devices, piping and fittings as much as possible against
adverse environmental effects.
▪ Provide space for expansion and contraction of long runs of piping.
▪ Design and install piping in refrigerating systems such as to minimise the
likelihood of hydraulic shock damaging the system.
▪ Mount the indoor equipment and pipes securely and protect them to avoid
accidental rupture of equipment or pipes in case of events such as moving
furniture or reconstruction activities.
CAUTION
Do NOT use potential sources of ignition in searching for or detection of refrigerant
leaks.
NOTICE
▪ Do NOT re-use joints and copper gaskets which have been used already.
▪ Joints made in installation between parts of refrigerant system shall be accessible
for maintenance purposes.
Installation space requirements
WARNING
If appliances contain R32 refrigerant, the floor area of the room in which the
appliances are installed, operated and stored MUST be larger than the minimum
floor area defined in table below A (m
2
). This applies to:
▪ Indoor units without a refrigerant leakage sensor; in case of indoor units with
refrigerant leakage sensor, consult the installation manual
▪ Outdoor units installed or stored indoors (e.g. winter garden, garage, machinery
room)
NOTICE
▪ Protect pipework from physical damage.
▪ Keep the pipework installation to a minimum.
To determine the minimum floor area
1 Determine the total refrigerant charge in the system (= factory refrigerant
charge + additional refrigerant amount charged).

Daikin 4MXM80A2V1B9 Specifications

General

Cooling Capacity	8.0 kW
Heating Capacity	9.0 kW
Refrigerant	R32
Power Source	Outdoor Unit
Type	Multi-Split System
Power Supply	220-240V, 50Hz, 1 Phase
Outdoor Unit Noise Level	49 dB(A)

Summary

General Safety Precautions for Installers

For the Installer: General Safety

Installation Site Safety

Refrigerant Safety (R410A/R32)

Safety precautions related to the refrigerant type.

Electrical Safety Precautions

Safety precautions for electrical connections and wiring.

Specific Installer Safety Instructions

Handling the Outdoor Unit Safely

Safety precautions for handling the outdoor unit, including touching parts.

Outdoor Unit Installation Safety

Safety guidelines for installing the outdoor unit and its site.

Outdoor Unit Site Selection Safety

Opening the Outdoor Unit Safely

Outdoor Unit Installation

Preparing the Installation Site

Guidelines for selecting and preparing a suitable installation location.

Outdoor Unit Site Requirements

Specific requirements for the outdoor unit's installation site.

Cold Climate Site Requirements

Mounting the Outdoor Unit

Instructions and precautions for mounting the outdoor unit.

Outdoor Unit Installation Structure

Installing the Outdoor Unit

Providing Drainage for Outdoor Unit

Preventing Outdoor Unit Fall

Refrigerant Piping Installation

7.1 Preparing Refrigerant Piping

Requirements and guidelines for preparing refrigerant piping.

7.2 Connecting Refrigerant Piping

Procedures and precautions for connecting refrigerant piping.

7.3 Checking Refrigerant Piping

Steps and precautions for checking the refrigerant piping for leaks.

Charging Refrigerant

8.1 About Charging Refrigerant

Information on when and why refrigerant charging is necessary.

8.3 Precautions When Charging Refrigerant

General safety precautions to follow during refrigerant charging.

8.4 Determining Additional Refrigerant Amount

How to calculate the amount of additional refrigerant needed based on piping length.

8.5 Determining Complete Recharge Amount

How to calculate the total refrigerant amount for a complete recharge.

8.6 Charging Additional Refrigerant

Step-by-step procedure for charging additional refrigerant.

8.8 Checking for Refrigerant Leaks After Charging

Procedure for checking refrigerant leaks after the charging process.

Electrical Installation

9.1 Connecting Electrical Wiring

9.2 Connecting Wiring to Outdoor Unit

Finishing Outdoor Unit Installation

Unit Configuration

System Commissioning

12.1 Overview: Commissioning

12.2 Precautions When Commissioning

12.3 Checklist Before Commissioning

12.4 Checklist During Commissioning

12.5 Trial Operation and Testing

Procedures for trial operation and testing of the system.

12.6 Starting Up the Outdoor Unit

Maintenance and Service

14.2 Maintenance Safety Precautions

14.3 Yearly Maintenance Checklist

14.4 Compressor Safety and Information

Troubleshooting

15.1 Overview: Troubleshooting

15.2 Precautions When Troubleshooting

15.3 Solving Problems Based on Symptoms

Troubleshooting guide based on observed symptoms.

15.4 Solving Problems Based on LED Behaviour

Diagnosing issues using the LED indicators on the outdoor unit PCB.

System Disposal