Gree A Series Service Manual page 67

A Series Modular-type Air-cooled (Heat Pump) Chiller
Water (t≤95℃) lines
Water (t≤60℃) lines
Cooling wter lines
Drain lines
Condensation lines
5.2.3.2 Insulation
Typically the refrigerant copper tubes, air ducts, chilled water tubes and condensation tubes
should be thermally insulated by the commonly used plastic insulation rather than glass wool,
PE or PEF.
Diameter(mm)
DN15～DN25
DN32～DN50
DN65～DN80
≥DN100
Note: under the tropical climate, the insulation should be thickened or doubled.
Welded steel, seamless steel, galvanized steel, nodular
cast iron, composited aluminum and plastic (PAP1,
XPAP2, RPAP5), PB, PE-X
Welded steel, seamless steel, galvanized steel, PP-R,
composited aluminum and plastic (PAP1, XPAP2,
RPAP5), PB, PE-X, PE-RT
Welded steel, seamless steel, galvanized steel, nodular
cast iron
PVC,UPVC
Galvanized steel, PE, PVC, UPVC
Gas-expanded Rubber
Ⅰ
＞15mm ＞20mm
＞25mm ＞30mm
＞30mm ＞35mm
＞35mm ＞40mm
Ⅱ
＞30mm
＞35mm
＞35mm
＞40mm
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Glass Wool
Ⅰ Ⅱ
＞30mm
＞35mm
＞40mm
＞45mm