Requirements For Selecting Installation Materials; Copper Pipe; Condensate Water Pipe; Insulation Material - Gree GMV-S120WL/A-S Service Manual

and must meet national and relevant compulsory standards.
3）If environmentally-friendly materials are to be used as required by customers, all such
materials must meet national environmental protection requirement and be provided with relevant
certificates.

3.3.2 Requirements for selecting installation materials

3.3.2.1 Copper pipe

1）Dephosphorization drawing copper pipe with tensile strength not less than 240kgf/mm²
must be used;
2）Specifications requirement:
Note:
① Appearance requirement: The inner and outer surface of pipe should be smooth without
pinhole, crack, peeling, blister, inclusion, copper powder, carbon deposition, rust, dirt or
severe oxide film, and without obvious scratch, pit, spot and other defects.
② 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.

3.3.2.2 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) Requirements for specifications and wall thickness
(1) Water supplying UPVC pipe: Φ32mm×2mm, Φ40mm×2mm, Φ50mm×2.5mm;
(2)HDG steel pipe: Φ25mm×3.25mm, Φ32mm×3.25mm, Φ40mm×3.5mm, Φ50mm×3.5mm.

3.3.2.3 Insulation material

1) Rubber foam insulation material;
2) Specifications and requirements
(1) Flame retardancy level: B1 or higher;
(2) Refractoriness: at least 120° C;
(3) The insulation thickness of condensate water pipe: at least 10 mm;
(4) 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.
GMV5 Home DC Inverter Multi VRF Units
R410A Refrigerant System
Outer diameter(mm/inch)
Φ6.35(1/4)
Φ9.52(3/8)
Φ12.70(1/2)
Φ15.9(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
Φ25.40(1/1)
Φ28.60(9/8)
Wall
Model
thickness(mm)
≥0.8
≥0.8
≥0.8
≥1.0
≥1.0
≥1.2
≥1.2
≥1.2
125
0
0
0
0
0
1/2H
1/2H
1/2H