Chilled water piping(≥5℃)

Flexible foam rubber pipe shell (mm)Glass wool pipe shell (mm)
Pipe nominal diameterThicknessPipe nominal diameterThickness
Inside the ceiling of the room, the machine room15~252515~2525
32~803032~8030
≥10035≥10035
Outdoor15~253515~2530
32~804032~8035
≥10050≥10040

Hot water, hot and cold combined pipe (5~60℃)

Flexible foam rubber pipe shell (mm)Glass wool pipe shell (mm)
Pipe nominal diameterThicknessPipe nominal diameterThickness
Inside the ceiling of the room, the machine room≤5030≤4035
70~1503050~10040
≥20035125~25045
≥30050
Outdoor≤5035≤4040
70~1503550~10045
≥20040125~25050
≥30055

Hot water, hot and cold combined pipe (0~95℃)

Polyurethane rigid foam (direct burial) (mm)Glass wool pipe shell (mm)
Pipe nominal diameterThicknessPipe nominal diameterThickness
Inside the ceiling of the room, the machine room≤3230≤5050
40~2003570~15060
≥25045≥20070
Outdoor≤3235≤5060
40~2004070~15070
≥25050≥20080

Ice storage pipes (≥ -10°C)

Pipe nominal diameterFlexible foam rubber (mm)Polyurethane foam (mm)
Indoor15~403530
50~1004040
≥1255050
PHE (Plate heat exchanger)35
Tanks6050
Outdoor15~404040
50~1005050
≥1256060
Tanks7070

Air conditioning condensate piping

Flexible foam rubber pipe shell (mm)Glass wool pipe shell (mm)
Inside the ceiling of air-conditioned rooms1010
Non-air-conditioned rooms1515

Air conditioning air ducts

Flexible foam rubber pipe shell (mm)Glass wool board, felt (mm)
Air supply temperature≥14℃Non-air-conditioned rooms2040
In air-conditioned rooms2030
Air supply temperature≥4℃Non-air-conditioned rooms2550
In air-conditioned rooms2540

Refrigerant piping (split air conditioner, VRV)

Installation InstructionsMinimum thickness of the required insulation
Through the air-conditioned space19mm
Through unconditioned spaces19mm
Throughout the bathroom ceiling space25mm

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