97
97
4.
4.
Indoor Units installation
Indoor Units installation
2-4. Indoor Units Installation
2-4. Indoor Units Installation
1)
1)
Place the pattern sheet on the ceiling at the spot where you want to install the
Place the pattern sheet on the ceiling at the spot where you want to install the
indoor unit.
indoor unit.
2)
2)
Insert bolt anchors, use existing ceiling supports or construct a suitable support
Insert bolt anchors, use existing ceiling supports or construct a suitable support
as shown in figure.
as shown in figure.
3) Install the suspension bolts depending on the 3 the ceiling type.
3) Install the suspension bolts depending on the 3 the ceiling type.
4) Screw eight nuts to the suspension bolts making space for hanging the indoor
4) Screw eight nuts to the suspension bolts making space for hanging the indoor
unit.
unit.
5) Hang the indoor unit to
5) Hang the indoor unit to the suspension bolts between two nuts.
the suspension bolts between two nuts.
(1) Small: The opposite side of the
(1) Small: The opposite side of the drainpipe is 3 mm higher than
drainpipe is 3 mm higher than the drain side.
the drain side.
(2) Large: The opposite side of the drainpipe is 5 mm higher than the drain side.
(2) Large: The opposite side of the drainpipe is 5 mm higher than the drain side.
6) If the ceiling bottom is likely to generate vibration due to indoor unit installation,
6) If the ceiling bottom is likely to generate vibration due to indoor unit installation,
then install an additional spring mount
then install an additional spring mount when installing the ceiling base bolts.
when installing the ceiling base bolts.
7) Screw the nuts to suspend the unit.
7) Screw the nuts to suspend the unit.
8) Adjust level of the unit
8) Adjust level of the unit by using measurement plate for all 4 sides.
by using measurement plate for all 4 sides.
9) Installation of cupper pipe
9) Installation of cupper pipe
(1) On delivery, the indoor unit is loaded with inert gas.
(1) On delivery, the indoor unit is loaded with inert gas.
unscrew the pinch pipe at the end of each refrigerant pipe.
unscrew the pinch pipe at the end of each refrigerant pipe.
(2) Connect the Refrigerant Pipe of units.
(2) Connect the Refrigerant Pipe of units.
(3) In order to detect basic refrigerant leaks, before recreating the vacuum and re-circulating the
(3) In order to detect basic refrigerant leaks, before recreating the vacuum and re-circulating the
R410A, it’s responsiblility of installer
R410A, it’s responsiblility of installer to pressurize the whole system with nitrogen (using
to pressurize the whole system with nitrogen (using a
a
pressure regulator) at a
pressure regulator) at a pressure above 4.1MPa (gauge).
pressure above 4.1MPa (gauge).
Summary of Contents for MXJ-YA1509 Series
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