GREE Duct type Ducted Type Split Air-Conditioner Units
58
R410A Refrigerant System
OD (mm/inch) Wall Thickness (mm)
Ф6.35(1/4) ≥0.8
Ф9.52(3/8) ≥0.8
Ф12.70(1/2) ≥0.8
Ф15.9(5/8) ≥1.0
Ф19.05(3/4) ≥1.0
Ф22.20(7/8) ≥1.2
Ф25.40(8/8) ≥1.2
(6) After the inner part of the copper pipe is cleaned and dried, the inlet and outlet must be sealed
tightly by using pipe caps, plugs or adhesive tapes.
2.2 Condensate Water Pipe
(1) Pipes that can be used for air conditioner drainage include: water supplying UPVC pipe, PP-R
pipe, PP-C pipe, and HDG steel pipe.
(2) All relevant certificates and quality test reports are provided.
(3) Requirements for specifications and wall thickness.
Water supplying UPVC pipe: Φ32mm×2mm，Φ40mm×2mm，Φ50mm×2.5mm.
HDG steel pipe: Φ25mm×3.25mm，Φ32mm×3.25mm，Φ40mm×3.5mm，Φ50mm×3.5mm.
2.3 Insulation Material
(1) Rubber foam insulation material.
(2) Flame retardancy level: B1 or higher.
(3) Refractoriness: at least 120℃.
(4) The insulation thickness of condensate water pipe: at least 10 mm.
(5) When the diameter of copper pipe is equal to or greater than Φ15.9 mm, the thickness of
insulation material should be at least 20 mm; when the diameter of copper pipe is less than
15.9 mm, the thickness of insulation material should be at least 15 mm.
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