23
2
Accessories
Connecting piping (unit: mm)
Piping
Capacity
Liquid side
Gas side
kW≤7.1
Φ6.35×0.75
Φ12.7×0.75
7.1<kW≤14.0
Φ9.52×0.75
Φ15.9×1.0
Remarks
For connection of the IDU refrigerant system, it is recommended
to use a soft copper tube (T2M), with the length selected
according to the actual situation.
Drain pipe
Thermal insulation pipe
This is used as the indoor
unit's drain pipe, 25mm
in diameter. The length is
determined according to
actual needs.
The thickness of the insulation
pipe for the copper pipe is usually
15mm or above; and the thickness
of the insulation pipe for the UPVC
plastic tube is usually 10mm or
above. If the pipe is used in a
closed humid area, the thickness
should be increased.
CAUTION
The materials necessary for onsite installation of the connecting pipe,drain pipe, lifting screw, various fasteners
(pipeline bracket, victaulic connector, screw, etc.), power supply cable, signal line, etc. need to be purchased by the
installer. The materials and specifications must comply with the corresponding local or industrial standards.
3
Insulation Material Requirements
Copper pipe insulation
①
The insulation work should only be carriedout after the successful completion of the air tight test.
Use polyethylene foam as insulationmaterial, fire rating class is B1 and heat resistance is over 120°C.
①
Thickness of the insulation pipe:
1. When the pipe diameter is equal to orgreater than 15.9mm, the insulation thickness is at least 20mm.
2. When the pipe diameter is equal to orsmaller than 12.7mm, the insulation thickness is at least 15mm.
①
In cold climates, for heating application,the insulation thickness of outdoor refrigerant pipe is at least 40mm,
theinsulation thickness of indoor refrigerant pipe is at least 20mm.
