GMV5 Home DC Inverter Multi VRF Units
135
5.3.4.2 Installation of pressure ventilating duct
Two methods are available to connect an ODU to static pressure ventilating duct, they are
reserving the unit top cover and removing the unit top cover.
When the effective area of air inlet is less than 70% of the total air inlet area of outdoor unit,
please introduce exhauster. The total air volume of exhauster shall not be less than 80% of total
air inlet volume.
Method 1: Reserve the unit top cover and press the canvas casing with top cover. Detailed
operations are as follows:
â‘ Select the
installation position of
ODU and fix the ODU;
â‘¡ Confirm the
installation position of
ventilation duct
according to the position
of ODU;
â‘¢ Make and install
ventilation duct
according to the figure
at the left side.
â‘ Material of
ventilation
duct: steel
plate or sheet
iron;
â‘¡ Ventilation
duct is
prepared by
the user.
â‘ Use an air
screwdriver or
screwdriver to unfasten
the tapping screws that
fixing the top cover
sub-assy;
â‘¡ Take out the grille
from the top of top cover
sub-assy.
Remove the
grille on the top
cover.
Otherwise, the
air volume,
especially the
unit operating
performance
will be affected;
â‘ Put the canvas
casing inside out; cover
one end of the canvas
casing over the unit
downward until the
canvas end face is
aligned with the unit or a
bit higher than the top of
the unit.
â‘ Put the top cover
back and tightly press
the canvas casing;
â‘¡ Use tapping screws
to fix the top cover onto
the unit.