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Daikin FXSN112A2VEB [57/80] Piping installation
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16 | Piping installation
Installer and user reference guide
57
FXSN50~112A2VEB
CO₂ Conveni-Pack: indoor unit
4P602817-1A – 2020.05
16 Piping installation
In this chapter
16.1 Preparing refrigerant piping................................................................................................................................................... 57
16.1.1 Refrigerant piping requirements ........................................................................................................................... 57
16.1.2 Refrigerant piping insulation.................................................................................................................................. 58
16.2 Connecting the refrigerant piping.......................................................................................................................................... 58
16.2.1 About connecting the refrigerant piping............................................................................................................... 58
16.2.2 Precautions when connecting the refrigerant piping............................................................................................ 58
16.2.3 Pipe bending guidelines ......................................................................................................................................... 59
16.2.4 Guidelines when connecting the refrigerant piping.............................................................................................. 59
16.2.5 To connect the refrigerant piping to the indoor unit............................................................................................ 60
16.1 Preparing refrigerant piping
16.1.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the "General safety precautions"
chapter.
NOTICE
The refrigerant R744 requires strict cautions for keeping the system clean, dry and
tight.
▪ Clean and dry: foreign materials (including mineral oils or moisture) should be
prevented from getting mixed into the system.
▪ Tight: R744 does not contain any chlorine, does not destroy the ozone layer, and
does not reduce earth's protection against harmful ultraviolet radiation. R744 can
contribute to the greenhouse effect if it is released. Therefore pay special
attention to check the tightness of the installation.
NOTICE
The piping and other pressure-containing parts shall be suitable for refrigerant. Use
K65 copper-iron alloy tube system for high-pressure applications with a working
pressure of 120bar.
▪ Foreign materials inside pipes (including oils for fabrication) must be
≤30mg/10m.
Refrigerant piping diameter
Liquid piping Gas piping
Ø9.5mm Ø12.7mm
Refrigerant piping material
▪ Piping material: K65 copper-iron alloy (CuFe2P), maximum operating pressure =
120bar
▪ Piping temper grade and thickness:
Outer diameter (Ø) Temper grade Thickness (t)
(a)
9.5mm (3/8") R420
(drawn)
≥0.65mm
t
Ø
12.7mm (1/2") ≥0.85mm
Содержание
- Co₂ conveni pack indoor unit 1
- Installer and user reference guide 1
- About the box 38 2
- About the documentation 4 2
- About the system 21 2
- About the units and options 40 2
- Before operation 24 2
- Disposal 36 2
- Energy saving and optimum operation 27 2
- For the installer 37 2
- For the user 15 2
- General safety precautions 5 2
- Installer and user reference guide 2
- Maintenance and service 28 2
- Operation 25 2
- Specific installer safety instructions 12 2
- Table of contents 2
- Troubleshooting 33 2
- User interface 23 2
- User safety instructions 16 2
- Commissioning 68 3
- Configuration 70 3
- Disposal 74 3
- Electrical installation 62 3
- Glossary 78 3
- Hand over to the user 73 3
- Piping installation 57 3
- Table of contents 3
- Technical data 75 3
- Unit installation 42 3
- About the documentation 4
- About this document 4
- About the documentation 5
- General safety precautions 5
- Meaning of warnings and symbols 5
- For the installer 6
- General 6
- General safety precautions 6
- General safety precautions 7
- Installation site 7
- Refrigerant 7
- Danger risk of explosion 8
- General safety precautions 8
- Notice 8
- Warning 8
- General safety precautions 9
- Danger risk of electrocution 10
- Electrical 10
- General safety precautions 10
- If applicable see the installation manual or installer reference guide of your application for more information 10
- Notice 10
- Warning 10
- Caution 11
- General safety precautions 11
- Install power cables at least 1 m away from televisions or radios to prevent interference depending on the radio waves a distance of 1 m may not be sufficient 11
- Notice 11
- Warning 11
- Always observe the following safety instructions and regulations 12
- Caution 12
- General installation requirements 12
- Installation site see 15 preparing the installation site 4 42 12
- Specific installer safety instructions 12
- Warning 12
- Caution 13
- Electrical installation see 17 electrical installation 4 62 13
- Installing the ducting see 15 guidelines when installing the ducting 4 52 13
- Refrigerant piping installation see 16 piping installation 4 57 13
- Specific installer safety instructions 13
- Warning 13
- Specific installer safety instructions 14
- Warning 14
- For the user 15
- General 16
- User safety instructions 16
- Caution do not insert fingers rods or other objects into the air inlet or outlet when the fan is rotating at high speed it will cause injury 17
- Caution if this unit is equipped with an electrically powered safety measure such as a c 17
- Instructions for safe operation 17
- Refrigerant leak detector field supply in order to be effective the unit must be electrically powered at all times after installation except for short service periods 17
- User safety instructions 17
- Warning do not modify disassemble remove reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire contact your dealer 17
- User safety instructions 18
- User safety instructions 19
- User safety instructions 20
- About the system 21
- System layout 21
- About the system 22
- Information requirements for fan coil units 22
- User interface 23
- Before operation 24
- About operation modes 25
- Basic operation modes 25
- Operation 25
- Operation range 25
- Operation 26
- Special heating operation modes 26
- To operate the system 26
- Energy saving and optimum operation 27
- Maintenance and service 28
- Precautions for maintenance and service 28
- Cleaning the air filter and air outlet 29
- Maintenance and service 29
- To clean the air filter 29
- To clean the air outlet 29
- About the refrigerant 30
- Maintenance after a long stop period 30
- Maintenance and service 30
- Maintenance before a long stop period 30
- About refrigerant leak detection 31
- Maintenance and service 31
- Maintenance and service 32
- Notice 32
- Troubleshooting 33
- Symptom the system does not operate 34
- Symptoms that are not system malfunctions 34
- Troubleshooting 34
- Symptom dust comes out of the unit 35
- Symptom the units can give off odours 35
- Troubleshooting 35
- Disposal 36
- Notice 36
- For the installer 37
- About the box 38
- Indoor unit 38
- Overview about the box 38
- To remove the accessories from the indoor unit 38
- To unpack and handle the unit 38
- About the box 39
- About the indoor unit 40
- About the units and options 40
- Identification 40
- Identification label indoor unit 40
- In this chapter 40
- System layout 40
- About the units and options 41
- Caution 41
- Combining units and options 41
- Information 41
- Make sure you have the following mandatory options 41
- Possible options for the indoor unit 41
- Select a suitable user interface 41
- User interface wired or wireless refer to catalogues and technical literature to 41
- In this chapter 42
- Installation site requirements of the indoor unit 42
- Preparing the installation site 42
- Unit installation 42
- Unit installation 43
- Installation options 44
- Make sure ceiling opening is big enough to ensure a sufficient clearance for maintenance and service 44
- Service space and ceiling opening size 44
- Unit installation 44
- Additional installation site requirements for co₂ refrigerant 45
- Allowable refrigerant charge 45
- Information 45
- Qlav quantity limit with additional ventilation 0 8 kg 45
- Qlmv quantity limit with minimum ventilation 0 74 kg 45
- Rcl refrigerant concentration limit 0 72 kg 45
- Refrigerant basic characteristics 45
- Refrigerant r744 45
- Safety class a1 45
- Some options may require additional service space refer to the installation manual of the used option before installation 45
- The calculation of the allowable refrigerant charge depends on the combination of the access category and the location classification as described in the following table 45
- Toxicity limit 0 kg 45
- Unit installation 45
- Where the possibility exists of more than one access category the more stringent requirements apply if occupied spaces are isolated e g by sealed partitions floors and ceilings the requirements of the individual access category apply 45
- Unit installation 46
- Unit installation 47
- 15 2 example graph for calculation 48
- 2 m 625 48
- And the room height is 2 m calculate the room volume as 250 48
- As the floor area for 48
- Determination of the room volume example even if the room area is 300 48
- Example total refrigerant charge in the system is 45 kg and room volume is 300 48
- For occupancies on the lowest underground floor of the building 48
- For occupancies other than on the lowest underground floor of the building 48
- For occupied spaces with a floor area exceeding 250 48
- If the total refrigerant charge kg divided by the room volum 48
- Qlav 2 48
- Qlav value cannot be exceeded 48
- Qlmv 0 48
- Qlmv 0 74 and qlav 0 8 therefore install at least 1 appropriate measure in the room 48
- Qlmv and qlav 1 48
- Qlmv and qlav 2 48
- Rcl and qlmv 1 48
- The number of appropriate measures must be at least 48
- To determine the minimum number of appropriate measures 48
- Unit installation 48
- Use 250 48
- Unit installation 49
- Guidelines when installing the indoor unit 50
- Mounting the indoor unit 50
- Unit installation 50
- 15 3 suspension bolt spacing a 51
- Bracket to the suspension bolt fix it securely using a nut and washer from the upper and lower sides of the hanger bracket 51
- Class a mm 51
- Do not install the unit tilted possible consequence if the unit is tilted against the direction of the condensate flow the drain piping side is raised the float switch might malfunction and cause water to drip 51
- Level make sure the unit is level at all four corners using a level or a water filled 51
- Notice 51
- Suspension bolts use m10 suspension bolts for installation attach the hanger 51
- Unit installation 51
- Vinyl tube 51
- Guidelines when installing the drain piping 52
- Guidelines when installing the ducting 52
- Unit installation 52
- Unit installation 53
- Unit installation 54
- Unit installation 55
- Relocation 56
- Unit installation 56
- In this chapter 57
- Piping installation 57
- Preparing refrigerant piping 57
- Refrigerant piping requirements 57
- About connecting the refrigerant piping 58
- Connecting the refrigerant piping 58
- Piping installation 58
- Precautions when connecting the refrigerant piping 58
- Refrigerant piping insulation 58
- Guidelines when connecting the refrigerant piping 59
- Pipe bending guidelines 59
- Piping installation 59
- Piping installation 60
- To connect the refrigerant piping to the indoor unit 60
- Insulate the refrigerant piping on the indoor unit as follows 61
- Make sure to insulate all refrigerant piping any exposed piping might cause condensation 61
- Notice 61
- Piping installation 61
- About connecting the electrical wiring 62
- Electrical installation 62
- In this chapter 62
- Precautions when connecting the electrical wiring 62
- Electrical installation 63
- Guidelines when connecting the electrical wiring 63
- Electrical installation 64
- Specifications of standard wiring components 64
- To connect the electrical wiring to the indoor unit 64
- Electrical installation 65
- Electrical installation 66
- To connect appropriate measures for appliances filled with co₂ 66
- 17 1 example of appropriate measures connection layout for one room 67
- Electrical installation 67
- If the c 67
- Refrigerant leak detector is installed enable the function for refrigerant leak detection as described in 19 field setting 4 70 67
- Checklist before commissioning 68
- Commissioning 68
- In this chapter 68
- Precautions when commissioning 68
- Commissioning 69
- Error codes when performing a test run 69
- To perform a test run 69
- Configuration 70
- Field setting 70
- Configuration 71
- Configuration 72
- Hand over to the user 73
- Disposal 74
- Notice 74
- Technical data 75
- Unified wiring diagram legend 75
- Wiring diagram 75
- Technical data 76
- Technical data 77
- Glossary 78
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