Selection Of Installation Material; Refrigerants Pipeline; Circulating Pipe; Discharge Pipe For Condensate - Gree GMV series Service Manual

Dc Inverter VRF plus Water Heater Solution Service Manual

3 SELECTION OF INSTALLATION MATERIAL

Materials and equipments for installation shall have correspongding certificate of qualification and inspection
report. If there is fire resistance requirements for the product, there shall be such certificate and it shall comply with
related regulations.
Besides, If customers require environmentally friendly materials, such materials shall comply with national
environment requirements and provide related certificates.
Requirements for Main Materials

3.1 Refrigerants Pipeline

a．Dephophorized seamless and drawn copper tube for air conditioner；Material Requirement:
b. Appearance
powder,rust,dirty or serious oxide film on the surface of the pipe and also there shall be no other cosmetic defects.
c． Inspection Report: There must be certificate and quality inspection report.
d． Strength of extension shall not be less than 240kgf/mm²;
e． Specification：
Outer Diameter of Copper Pipe
（mm）
6.35
9.52
12.7
15.88
19.05
22.2
f． After cleaning and drying the inside of the copper pipe, Seal pipe orifice with pipe cap,plug or adhesive
tape.

3.2 Circulating Pipe

The PPR pipe with outer diameter dn25 which is S2.5 series (thickess is 4.2mm) is recommended.Hot-water
pipes are applied as feed pipe for cooling water and discharge piep for hot water. The PPR pipe with outer
diameter dn20 which is S2.5 series (thickess is 3.4mm) is recommended.All applied PPR pipes must comply with
national standards GB/T18742.If other insulated pipeline are adopted, the above can be reference.

3.3 Discharge Pipe for Condensate

a. Applicable pipelines for discharging water from air conditioner: Feed pipe UPVC, PP-R pipe, PP-C pipe and
hot galvanizing steel pipe
b. Complete certificates and quality inspection reports
c. Requirements of Specification and Thickness
Feed Pipe UPVC：Φ32mm×2mm，Φ40mm×2mm，Φ50mm×2.5mm
Requirements: There
Refrigerants
R22
R410A
R22
R410A
R22
R410A
R22
R410A
R22
R410A
R22
R410A
are no needle holes,crack,peeling,blister,impurity,copper
Min.Wall Thickness（mm）
INSTALLATION
Type
0.5
0.8
0.71
0.8
0.8
0.8
1.0
1.0
1.0
1/2H
1.0
1.5
1/2H
1.5
0
0
0
0
0
128