GMV DC Inverter VRF
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(4) Please use a torque wrench to connect union nut on the indoor unit.See Fig. 4.3.1.
Fig. 4.3.1
1) Align the expansion end of copper pipe with the center of threaded joint. Tighten the
flare nuts with your hands.
2) Tighten the flare nuts with torque wrench until you hear "click" sound.
3) Use sponge to wrap the connecting pipe and joints without thermal insulation and tie
it up with plastic tape.
4) A mounting support for the connection pipe is required.
5) The curvature degree of connection pipe should not be small, otherwise the pipe
might crack. Installation personnel should use tube bender when bending the pipe.
6) Don't forbibly stretch the pipe joint, otherwise indoor capillary or other pipes might be
damaged and lead to refrigerant leakage.
4.3.2 Manifold
(1) Y-type manifold, See the Fig. 4.3.2(a). T-type manifold, See the Fig. 4.3.2(b)
Fig. 4.3.2(a)
Fig. 4.3.2(b)
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