Gree Ultra Heat GMV-VQ72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual_Heat Recovery Serial INSTALLATION
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(5) Fixing of manifolds.
There must be three fixing point for both horizontal and vertical installation of the Y-type manifold.
Fixing point 1: 100 mm (3.94inch) on the main inlet manifold from the welding point.
Fixing point 2: 200 mm (7.88inch) on the main branched pipe from the welding point.
Fixing point 3: 250 mm (9.84inch) on the branched pipe from the welding point.
Branches of a manifold must be laid parallel and cannot be wrapped in superimposed mode.
(6) The liquid pipe and gas pipe must have the same length and be laid in the same route.
(7) The Y-type manifold has an attached pipe used to adjust the diameter of different pipes. If the
pipe size on site does not match the size of the manifold junction, use the pipe cutter to cut at the middle
of the pipe and remove burrs. Then insert the copper pipe to proper depth. A concave bag for positioning
is available to the manifold purchased from Gree.
(8) Because the manifold structure is complex, perform with care to ensure tight insulation.
1.3.7 Pipe cleaning by nitrogen