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2-2. Piping limitation
For proper system operation, keep all the piping limitation mentioned here.
CAUTION
•
Allowable height difference:
– If the height difference between indoor unit and outdoor unit is larger than the allowable value:
• The pressure loss will be larger. → Insufficient cooling and heating
• The refrigerant in liquid pipe will flush. → Refrigerant flow noise generate at indoor unit
• The refrigerant oil will not return.
→ Insufficient refrigerant oil resulting in compressor damage
– If the height difference between indoor units is larger than the allowable value:
• The refrigerant flow balance will be poor. → Insufficient cooling and heating (poor balance)
• Refrigerant oil will collect in the piping or non-operating indoor units.
→ Insufficient refrigerant oil resulting in compressor damage
•
Piping length:
If the piping length is longer than prescribed:
– The pressure loss will be larger. → Insufficient cooling and heating
– Too much refrigerant will be charged. → Liquid backs up resulting in compressor damage
– The refrigerant oil will not return. → Insufficient refrigerant oil resulting in compressor damage
•
Pipe size:
– If the pipe size is larger than designated size:
• The refrigerant flow velocity will drop. Refrigerant oil will not return to the outdoor unit.
→ Insufficient refrigerant oil resulting in compressor damage
• The refrigerant in liquid pipe will flush easily. → Insufficient cooling and heating
– If the pipe size is smaller than designated size:
• The refrigerant circulation volume will drop. → Insufficient cooling and heating
• The pressure loss will be larger. → Insufficient cooling and heating
•
Indoor unit connected capacity:
– If the indoor unit connected capacity is larger than the system capacity:
• Insufficient system performance. → Insufficient cooling and heating
• When heating, refrigerant will collect in non-operating indoor units resulting in an insufficient
refrigerant circulation volume. → Insufficient cooling and heating
• The refrigerant oil will not return. → Compressor damage
– If the indoor unit connected capacity is too small compared to the system capacity:
• The liquid return will be too great. → Compressor damage
• The refrigerant will concentrate in the outdoor unit.
→ Continuous operation will become difficult due to the outdoor unit stopping due to high
head pressure. Also, excessive noise will be generated by the refrigerant flow when in heat-
ing mode.
2-2. Piping limitation
- (06-17) -
2. Piping design
SYSTEM
DESIGN
SYSTEM
DESIGN
Содержание AIRSTAGE J-IIIL
Страница 1: ...DESIGN TECHNICAL MANUAL ...
Страница 3: ...1 GENERAL INFORMATION 2019 11 01 DV_CH01_J3LU061EF_02 ...
Страница 20: ...2 5 Others 01 16 2 Optional parts GENERAL INFORMATION GENERAL INFORMATION ...
Страница 21: ...2 MODEL SELECTION 2019 11 01 DV_CH02_J3LU061EF_02 ...
Страница 94: ...5 1 Stand alone 02 72 5 Heating capacity table Outdoor unit MODEL SELECTION MODEL SELECTION ...
Страница 95: ...3 OUTDOOR UNITS 2019 03 07 DV_CH03_J3LU061EF_01 ...
Страница 113: ...6 2 Model AOU120RLAVL 6 2 Model AOU120RLAVL 03 17 6 Wiring diagrams OUTDOOR UNITS OUTDOOR UNITS ...
Страница 120: ...11 1 Stand alone 03 24 11 Accessories OUTDOOR UNITS OUTDOOR UNITS ...
Страница 121: ...4 INDOOR UNITS 2019 11 01 DV_CH04_J3LU061EF_02 ...
Страница 194: ...5 4 Mini duct type Model ARUL4TLAV1 5 4 Mini duct type 04 70 5 Wiring diagrams INDOOR UNITS INDOOR UNITS ...
Страница 203: ... Models ASUA12TLAV1 and ASUA14TLAV1 5 11 Wall mounted type 04 79 5 Wiring diagrams INDOOR UNITS INDOOR UNITS ...
Страница 205: ... Models ASUA30TLAV2 and ASUA36TLAV2 5 11 Wall mounted type 04 81 5 Wiring diagrams INDOOR UNITS INDOOR UNITS ...
Страница 206: ... Models ASUA7TLAV and ASUA12TLAV 5 11 Wall mounted type 04 82 5 Wiring diagrams INDOOR UNITS INDOOR UNITS ...
Страница 337: ...5 CONTROL SYSTEM 2019 11 01 DV_CH05_VR2E018EF_04 ...
Страница 521: ...6 SYSTEM DESIGN 2019 11 01 DV_CH06_J3LU061EF_02 ...
Страница 599: ...7 FUNCTION SETTINGS 2019 11 01 DV_CH07_J3LU061EF_02 ...
Страница 753: ...8 EXTERNAL INPUT AND OUTPUT 2019 11 01 DV_CH08_J3LU061EF_02 ...
Страница 831: ...9 NOTES 2019 11 01 DV_CH09_J3LU061EF_04 ...
Страница 850: ...4 2 Wiring connection 09 18 4 About connection between series NOTES NOTES ...
Страница 851: ...10 OPTIONAL PARTS 2019 11 01 DV_CH10_VR2E018EF_05 ...