Daikin RXM25A5V1B9 - User Manual

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Installer reference guide

R32 split series

RXM20A5V1B

RXM25A5V1B9

RXM35A5V1B9

RXM42A5V1B

ARXM25A5V1B

ARXM35A5V1B9

Main Page

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 Box21
Outdoor Unit21
To Unpack the Outdoor Unit21
To Handle the Outdoor Unit21
To Remove the Accessories from the Outdoor Unit22
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 Unit28
About Mounting the Outdoor Unit28
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 Piping34
About Connecting the Refrigerant Piping35
Precautions When Connecting the Refrigerant Piping35
Guidelines When Connecting the Refrigerant Piping36
Pipe Bending Guidelines37
To Flare the Pipe End37
Using the Stop Valve and Service Port38
To Connect the Refrigerant Piping to the Outdoor Unit39
Checking the Refrigerant Piping40
About Checking the Refrigerant Piping40
Precautions When Checking the Refrigerant Piping40
To Check for Leaks41
To Perform Vacuum Drying41
Charging Refrigerant43
About Charging Refrigerant43
About the Refrigerant44
Precautions When Charging Refrigerant45
To Determine the Additional Refrigerant Amount45
To Determine the Complete Recharge Amount45
To Charge Additional Refrigerant45
To Check Refrigerant Piping Joints for Leaks after Charging Refrigerant46
To Fix the Fluorinated Greenhouse Gases Label46
Electrical Installation47
About Connecting the Electrical Wiring47
Precautions When Connecting the Electrical Wiring47
Guidelines When Connecting the Electrical Wiring48
Specifications of Standard Wiring Components50
To Connect the Electrical Wiring to the Outdoor Unit50
Finishing the Outdoor Unit Installation52
To Finish the Outdoor Unit Installation52
Closing the Unit52
To Close the Outdoor Unit52
Configuration53
Facility Setting53
To Set the Facility Mode53
Standby Electricity Saving Function53
About the Standby Electricity Saving Function53
To Turn on Standby Electricity Saving Function54
Commissioning55
Precautions When Commissioning55
Checklist before Commissioning55
Checklist During Commissioning56
To Perform a Test Run56
Starting up the Outdoor Unit57
Hand-Over to the User58
Maintenance and Service59
Overview: Maintenance and Service60
Maintenance Safety Precautions60
Checklist for Yearly Maintenance of the Outdoor Unit60
About the Compressor60
Troubleshooting62
Overview: Troubleshooting62
Precautions When Troubleshooting62
Solving Problems Based on Symptoms62
Symptom: Indoor Units Fall, Vibrate or Make Noise62
Symptom: the Unit Is NOT Heating or Cooling as Expected63
Symptom: Water Leakage63
Symptom: Electrical Leakage63
Symptom: Unit Does NOT Function or Burn Damage63
Fault Diagnosis Using LED on Outdoor Unit PCB63
Disposal65
Overview: Disposal65
To Pump down65
To Start and Stop Forced Cooling66
To Start and Stop Forced Cooling Using the Indoor Unit ON/OFF Switch66
To Start and Stop Forced Cooling Using the Indoor Unit User Interface66
Technical Data67
Wiring Diagram67
Unified Wiring Diagram Legend67
Piping Diagram70
Piping Diagram: Outdoor Unit70
Glossary72

Brand	Daikin
Model	RXM25A5V1B9
Category	Air Conditioner
Language	English

Daikin RXM25A5V1B9 - User Manual

Table of Contents

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