Daikin LRNUN-AY1, Installation And Operation Manual

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Table of contents
Installation and operation manual
3
LRYELRNUN5A7Y1
CO
₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
Table of contents
1 About the documentation 3
1.1 About this document.................................................................. 3
2 Specific installer safety instructions 4
For the user 5
3 User safety instructions 5
3.1 General...................................................................................... 6
3.2 Instructions for safe operation ................................................... 6
4 About the system 8
4.1 System layout ............................................................................ 8
5 Operation 8
5.1 Operation range ........................................................................ 8
5.2 Design pressure ........................................................................ 8
6 Maintenance and service 9
6.1 About the refrigerant.................................................................. 9
6.2 Recommended maintenance and inspection ............................ 9
7 Troubleshooting 9
7.1 Error codes: Overview ............................................................... 10
8 Relocation 10
9 Disposal 10
For the installer 10
10 About the box 10
10.1 Outdoor unit............................................................................... 10
10.1.1 To unpack the outdoor unit ......................................... 10
10.1.2 To handle the outdoor unit .......................................... 10
10.1.3 To remove the accessories from the outdoor unit....... 11
11 About the units and options 11
11.1 About the outdoor unit ............................................................... 11
11.1.1 Labels on outdoor unit ................................................ 12
11.2 System layout ............................................................................ 12
11.3 Indoor unit constraints ............................................................... 13
12 Unit installation 13
12.1 Preparing the installation site .................................................... 13
12.1.1 Installation site requirements of the outdoor unit ........ 13
12.1.2 Additional installation site requirements of the
outdoor unit in cold climates ....................................... 13
12.1.3 Additional installation site requirements for CO ₂
refrigerant.................................................................... 13
12.2 Opening and closing the unit..................................................... 14
12.2.1 To open the outdoor unit............................................. 14
12.2.2 To open the electrical component box of the outdoor
unit .............................................................................. 15
12.2.3 To close the outdoor unit ............................................ 15
12.3 Mounting the outdoor unit.......................................................... 16
12.3.1 To provide the installation structure ............................ 16
12.3.2 To install the outdoor unit............................................ 17
12.3.3 To provide drainage .................................................... 17
13 Piping installation 17
13.1 Preparing refrigerant piping ....................................................... 17
13.1.1 Refrigerant piping requirements.................................. 17
13.1.2 Refrigerant piping material.......................................... 17
13.1.3 Refrigerant piping length and height difference .......... 18
13.1.4 To select the piping size ............................................. 18
13.1.5 To select refrigerant branch kits................................... 20
13.1.6 To select expansion valves for refrigeration ................ 20
13.2 Using stop valves and service ports ........................................... 20
13.2.1 To handle the stop valve.............................................. 20
13.2.2 To handle the service port ........................................... 21
13.2.3 Tightening torques ....................................................... 21
13.3 Connecting the refrigerant piping ............................................... 22
13.3.1 To remove the spun pipes ........................................... 22
13.3.2 To connect the refrigerant piping to the outdoor unit ... 22
13.3.3 Guidelines to connect T-joints...................................... 23
13.3.4 Guidelines to install a dryer.......................................... 23
13.3.5 Guidelines to install safety valves ................................ 23
13.4 Checking the refrigerant piping .................................................. 24
13.4.1 Checking refrigerant piping: Setup............................... 24
13.4.2 To perform a leak test .................................................. 24
13.4.3 To perform vacuum drying ........................................... 24
13.5 Insulating the refrigerant piping .................................................. 24
14 Electrical installation 25
14.1 About electrical compliance........................................................ 25
14.2 Field wiring: Overview ................................................................ 26
14.3 Guidelines when knocking out knockout holes........................... 27
14.4 Guidelines when connecting the electrical wiring ....................... 27
14.5 Specifications of standard wiring components ........................... 27
14.6 Connections to the outdoor unit ................................................. 28
14.6.1 Low voltage wiring – Outdoor unit................................ 28
14.6.2 High voltage wiring – Outdoor unit............................... 29
14.7 Connections to the capacity up unit ........................................... 29
14.7.1 Low voltage wiring – Capacity up unit.......................... 30
14.7.2 High voltage wiring – Capacity up unit......................... 30
15 Charging refrigerant 31
15.1 Precautions when charging refrigerant....................................... 31
15.2 To determine additional refrigerant amount ............................... 32
15.3 To charge refrigerant .................................................................. 32
16 Configuration 33
16.1 Making field settings ................................................................... 33
16.1.1 About making field settings .......................................... 33
16.1.2 To access the field setting components....................... 33
16.1.3 Field setting components ............................................. 33
16.1.4 To access mode 1 or 2 ................................................ 33
17 Commissioning 34
17.1 Precautions when commissioning .............................................. 34
17.2 Checklist before commissioning ................................................. 34
17.3 About the test run ....................................................................... 35
17.4 To perform a test run (7-segment display) ................................. 35
17.4.1 Test run checks............................................................ 35
17.4.2 Correcting after abnormal completion of the test run... 36
17.5 Logbook...................................................................................... 36
18 Troubleshooting 37
18.1 Solving problems based on error codes ..................................... 37
18.1.1 Error codes: Overview ................................................. 37
19 Technical data 40
19.1 Piping diagram: Outdoor unit...................................................... 40
19.2 Piping diagram: Capacity up unit................................................ 41
19.3 Wiring diagram: Outdoor unit ..................................................... 42
1 About the documentation
1.1 About this document
Target audience
Authorised inst end users