28
Fig. 36(a)
Fig. 36(b)
(4) Manifold is isolated by insulating material that can bear 120
℃
or higher temperature.
Manifold attached foam can not be taken as insulating material.
4.3.3 Installation and thermal insulation for pipeline
(1) For multi VRF system, every copper pipe should be labeled so as to avoid
misconnection.
(2) Manifolds can be laid in the following ways:
The length of a straight pipe between two manifolds cannot be less than 500 mm
(19-11/16in.). The length of a straight pipe before the main pipe port of the manifold cannot be
less than 500mm (19-11/16in.). The length of a straight pipe between the branch of the
manifold and the IDU cannot be less than 500mm(19-11/16in.).See Fig.37.
Lennox
VRF Unit
