Air Source Screw Water Chiller Unit – Installation Operation and Maintenance Manual
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taken, condensation may occur and lead to leakage.
(3) During the heating process, the temperature of outlet pipe (gas pipe) is usually high (50
°
C to
100
°
C). People may be burned if they accidentally touch the pipe.
3)
Selection of thermal materials
Polyurethane foam (flame retardant: B1; heat resistance: over 120
°
C)
4)
Thickness of insulating layer
When d
≥
Φ
40 mm (d indicates the external diameter of the copper pipe),
δ
≥
25 mm (
δ
indicates the
thickness of insulating layer).
Note: Thicker insulating layer should be used in the hot and humid scenario.
Note: Outdoor pipes must be protected with metal shell to prevent the pipes from the sun, rain, wind,
and man-made sabotage.
5)
Installation process and precautions
(1) Examples of incorrect operation
The gas pipe and liquid pipe are bound together. As a result, the insulating performance is bad.
(2) Examples of correct operation
a. Perform thermal insulation on the gas pipe and liquid pipe separately.
Note: After thermal insulation is performed separately on the gas pipe and liquid pipe,
