Chilled water piping(≥5℃)
| Flexible foam rubber pipe shell (mm) | Glass wool pipe shell (mm) | |||
| Pipe nominal diameter | Thickness | Pipe nominal diameter | Thickness | |
| Inside the ceiling of the room, the machine room | 15~25 | 25 | 15~25 | 25 |
| 32~80 | 30 | 32~80 | 30 | |
| ≥100 | 35 | ≥100 | 35 | |
| Outdoor | 15~25 | 35 | 15~25 | 30 |
| 32~80 | 40 | 32~80 | 35 | |
| ≥100 | 50 | ≥100 | 40 | |
Hot water, hot and cold combined pipe (5~60℃)
| Flexible foam rubber pipe shell (mm) | Glass wool pipe shell (mm) | |||
| Pipe nominal diameter | Thickness | Pipe nominal diameter | Thickness | |
| Inside the ceiling of the room, the machine room | ≤50 | 30 | ≤40 | 35 |
| 70~150 | 30 | 50~100 | 40 | |
| ≥200 | 35 | 125~250 | 45 | |
| ≥300 | 50 | |||
| Outdoor | ≤50 | 35 | ≤40 | 40 |
| 70~150 | 35 | 50~100 | 45 | |
| ≥200 | 40 | 125~250 | 50 | |
| ≥300 | 55 | |||
Hot water, hot and cold combined pipe (0~95℃)
| Polyurethane rigid foam (direct burial) (mm) | Glass wool pipe shell (mm) | |||
| Pipe nominal diameter | Thickness | Pipe nominal diameter | Thickness | |
| Inside the ceiling of the room, the machine room | ≤32 | 30 | ≤50 | 50 |
| 40~200 | 35 | 70~150 | 60 | |
| ≥250 | 45 | ≥200 | 70 | |
| Outdoor | ≤32 | 35 | ≤50 | 60 |
| 40~200 | 40 | 70~150 | 70 | |
| ≥250 | 50 | ≥200 | 80 | |
Ice storage pipes (≥ -10°C)
| Pipe nominal diameter | Flexible foam rubber (mm) | Polyurethane foam (mm) | |
| Indoor | 15~40 | 35 | 30 |
| 50~100 | 40 | 40 | |
| ≥125 | 50 | 50 | |
| PHE (Plate heat exchanger) | 35 | – | |
| Tanks | 60 | 50 | |
| Outdoor | 15~40 | 40 | 40 |
| 50~100 | 50 | 50 | |
| ≥125 | 60 | 60 | |
| Tanks | 70 | 70 |
Air conditioning condensate piping
| Flexible foam rubber pipe shell (mm) | Glass wool pipe shell (mm) | |
| Inside the ceiling of air-conditioned rooms | 10 | 10 |
| Non-air-conditioned rooms | 15 | 15 |
Air conditioning air ducts
| Flexible foam rubber pipe shell (mm) | Glass wool board, felt (mm) | ||
| Air supply temperature≥14℃ | Non-air-conditioned rooms | 20 | 40 |
| In air-conditioned rooms | 20 | 30 | |
| Air supply temperature≥4℃ | Non-air-conditioned rooms | 25 | 50 |
| In air-conditioned rooms | 25 | 40 |
Refrigerant piping (split air conditioner, VRV)
| Installation Instructions | Minimum thickness of the required insulation |
| Through the air-conditioned space | 19mm |
| Through unconditioned spaces | 19mm |
| Throughout the bathroom ceiling space | 25mm |
