Name: Daikin 4MWXM52A2V1B
Brand: Daikin
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Installer reference guide

R32 Split series

4MWXM52A2V1B

Table of Contents2
About the Documentation4
About this Document4
Meaning of Warnings and Symbols5
General Safety Precautions7
For the Installer7
General7
Installation Site8
Refrigerant - in Case of R410A or R3211
Electrical12
Specific Installer Safety Instructions15
About the Box20
Overview: about the Box20
Outdoor Unit20
To Unpack the Outdoor Unit20
To Handle the Outdoor Unit20
To Remove the Accessories from the Outdoor Unit21
About the Unit23
Identification23
Identification Label: Outdoor Unit23
Unit Installation24
Preparing the Installation Site24
Installation Site Requirements of the Outdoor Unit25
Additional Installation Site Requirements of the Outdoor Unit in Cold Climates27
Opening the Unit28
About Opening the Unit28
To Open the Outdoor Unit28
Mounting the Outdoor Unit29
About Mounting the Outdoor Unit29
Precautions When Mounting the Outdoor Unit29
To Provide the Installation Structure29
To Install the Outdoor Unit30
To Provide Drainage30
To Prevent the Outdoor Unit from Falling over31
Piping Installation33
Preparing Refrigerant Piping33
Refrigerant Piping Requirements33
Refrigerant Piping Insulation34
Refrigerant Piping Length and Height Difference34
Connecting the Refrigerant Piping35
About Connecting the Refrigerant Piping35
Precautions When Connecting the Refrigerant Piping35
Guidelines When Connecting the Refrigerant Piping37
Pipe Bending Guidelines37
To Flare the Pipe End37
Connections between Outdoor and Indoor Unit Using Reducers38
Using the Stop Valve and Service Port39
To Connect the Refrigerant Piping to the Outdoor Unit41
Checking the Refrigerant Piping41
About Checking the Refrigerant Piping41
Precautions When Checking the Refrigerant Piping42
To Check for Leaks42
To Perform Vacuum Drying42
Charging Refrigerant44
About Charging Refrigerant44
About the Refrigerant45
Precautions When Charging Refrigerant46
To Determine the Additional Refrigerant Amount46
To Determine the Complete Recharge Amount46
To Charge Additional Refrigerant46
To Fix the Fluorinated Greenhouse Gases Label47
Electrical Installation48
About Connecting the Electrical Wiring48
Precautions When Connecting the Electrical Wiring48
Guidelines When Connecting the Electrical Wiring50
Specifications of Standard Wiring Components51
To Connect the Electrical Wiring to the Outdoor Unit52
Finishing the Outdoor Unit Installation54
To Finish the Outdoor Unit Installation54
To Close the Outdoor Unit54
Configuration55
About Standby Electricity Saving Function55
To Turn on Standby Electricity Saving Function55
About Priority Room Function56
To Set the Priority Room Function56
About Night Quiet Mode56
To Turn on the Night Quiet Mode56
About Heat Mode Lock57
To Turn on Heat Mode Lock57
Commissioning58
Overview: Commissioning58
Precautions When Commissioning58
Checklist before Commissioning59
Checklist During Commissioning59
Trial Operation and Testing59
About Wiring Error Check60
To Perform a Test Run61
Starting up the Outdoor Unit62
Hand-Over to the User63
Maintenance and Service64
Overview: Maintenance and Service64
Maintenance Safety Precautions64
Checklist for Yearly Maintenance of the Outdoor Unit65
About the Compressor65
Troubleshooting66
Overview: Troubleshooting66
Precautions When Troubleshooting66
Solving Problems Based on Symptoms66
Symptom: Indoor Units Fall, Vibrate or Make Noise66
Symptom: the Unit Is NOT Heating or Cooling as Expected67
Symptom: Water Leakage67
Symptom: Electrical Leakage67
Symptom: Priority Room Setting Does NOT Function67
Symptom: Unit Does NOT Function or Burn Damage67
Solving Problems Based on LED Behaviour67
Fault Diagnosis Using LED on Outdoor Unit PCB67
Disposal70
Overview: Disposal70
To Pump down70
To Start and Stop Forced Cooling71
Technical Data72
Wiring Diagram72
Unified Wiring Diagram Legend72
Piping Diagram: Outdoor Unit74
Glossary76

Brand	Daikin
Model	4MWXM52A2V1B
Category	Air Conditioner
Language	English

Daikin 4MWXM52A2V1B User Manual

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