Gree GMV-V72W/A-F Owner's Manual page 26

(3) T-type manifold must be installed horizontally with inclination.
(4) Manifold is isolated by insulating material that can bear 120ºC(248℉)or higher temperature.
Manifold attached foam cannot be taken as insulating material.
4.4.3 Thermal insulation for pipeline
(1) For multi VRF system, every copper pipe should be labeled so as to avoid misconnection.
(2) At the manifold inlet, at least leave 500mm (19-11/16inch) straight pipe section, and for FQ04
manifold, keep it at least 800mm (31-1/2inch).
(3) There must be three fixing point for both horizontal and vertical installation of Y-type manifold.
Fixing point 1: 100mm (4in.) on the main inlet manifold from the welding point.
Fig.24 (b)
Fig.25 (a)
Fig.25 (b)
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Ultra Heat GMV Multi VRF