Exv Installation; Mechanical Installation - Gree GMV-N140U/A-T Manuel D'installation Et D'utilisation

OPERATING INSTALLATION MANUAL FOR AHU-KIT UNIT
① All field piping must be provided by a licensed refrigeration technician and must comply
with the relevant local and national codes.
② The EXV box is required to be installed in a vertical direction within the range of 90±15°
(not allowed for horizontal work). Welding the connection tubes first before refrigerant
pipes in order to avoid face-down soldering.
a. For refrigerant piping of outdoor unit, refer to the installation manual supplied with the
outdoor unit.
b. The maximum allowed piping length depends on the connected outdoor model.

4.3 EXV Installation

4.3.1 Mechanical Installation

(1) Remove the EXV box cover by unscrewing screws.
(2) Drill 4 holes on correct position (measurements as indicated in figure below) and fix the
valve kit box securely with 4 screws through the provided holes Ø12 mm.
Notes:
① Make sure that the EXV box is installed upwards.
② Make sure there is enough free space in front and in the side of the box for future
maintenance.
4.3.2 Welding Work
(1) Prepare the inlet/outlet field piping just in front of the connection (do not weld yet).
A Inlet coming from the outdoor unit
B Outlet to air handling unit
C Wire clamp
(2) Remove the wire clamp (C) by unscrewing 6xM4.2.
(3) Weld the field piping.
Notes:
① Make sure to cool the filters and valve body with a wet cloth and make sure the body
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Fig.4.3.2
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