Water-cooled Heat Recovery DC Inverter VRF
15
4.3.3 Thermal insulation for pipeline
(1) For multi VRF system, every copper pipe should be labeled to avoid misconnection.
(2) Requirement for manifolds is as follow:
The length of a straight pipe between two manifolds should not be less than 500 mm
(19-11/16in.). The length of a straight pipe before the main pipe port of the manifold should not be
less than 500mm (19-11/16in.). The length of a straight pipe between the branch of the manifold and
the IDU should not be less than 500mm (19-11/16in.). Show as Fig.4.3.4.
Unit:mm (in.)
Fig.4.3.4
(3) Three fixing point for both horizontal and vertical installation of the Y-type manifold should
be applied. Show as Fig.4.3.5.
Fixing point 1: 100 mm (3.94in.) on the main inlet manifold from the welding point.
Fixing point 2: 200 mm (7.88in.) on the main branched pipe from the welding point.
Fixing point 3: 250 mm (9.84 in.) on the branched pipe from the welding point.
Unit: mm (in.)
Fig.4.3.5
(4) Thermal insulation for pipeline.
1) To avoid condensate or water leakage from connecting pipe, gas pipe and liquid pipe
should be wrapped with thermal insulator and adhesive pipe for insulation from the air.
2) For heat pump unit, thermal insulator for liquid pipe should sustain 70
℃
(158
℉
) or above,
and for gas pipe should sustain 120
℃
(248
℉
) or above. For cooling only unit, thermal
insulator for both liquid pipe and gas pipe can sustain 70
℃
(158
℉
) or above. Example:
Содержание GMV-WQ120WM/A-F
Страница 58: ......
