Daikin RMXS112D7V3B, Installation Manual

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Installation manual
7
RMXS112~160D7V3B
Super Multi Plus System air conditioner
4PW19516-1B
■
When loosening a flare nut, always use two wrenches in
combination. When connecting the piping, always use a spanner
and torque wrench in combination to tighten the flare nut.
■
See the following table for tightening torque.
(Applying too much torque may cause the flares to crack.)
■
After all the piping has been connected, use nitrogen to perform
a gas leak check.
9. R
EFRIGERANT PIPING
■
Field pipes can be installed in four directions.
Figure - Field pipes in four directions (See figure 5)
When connecting the piping in the lateral direction (on the rear),
remove the piping cover (rear) and receiver mounting plate in
reference to
figure 7 .
■
To install the connecting pipe to the unit in a downward direction,
make a knockout hole by penetrating the center area around the
knockout hole using a Ø6 mm drill.
(See figure 5) .
■
Cutting out the two slits makes it possible to install as shown in
figure 5 .
(Use a metal saw to cut out the slits.)
■
After knocking out the knock-out, it is recommended to apply
repair paint to the edge and the surrounding end surfaces to
prevent rusting.
The size of the gas side stop valve is Ø15.9 while the inter-unit piping
is Ø19.1. Use the standard supplied accessory piping to make the
connection. See
figure 15 .
9.1. Preventing foreign objects from entering
Plug the pipe through-holes with putty or insulating material
(procured locally) to stop up all gaps, as shown in the figure.
Insects or small animals entering the outdoor unit may cause a short
circuit in the electrical box.
9.2. Cautions for handling stop valve
■
The stop valves for BP unit-outdoor connecting piping are closed
at shipment from the factory.
The names of parts of the stop valve are shown in the figure.
■
Since the side boards may be deformed if only a torque wrench
is used when loosening or tightening flare nuts, always lock the
shut-off valve with a wrench and then use a torque wrench.
Do not place wrenches on the valve cover.
Do not apply force on the valve cover, this may result in a
refrigerant leak.
Pipe size
Tightening
Torque (N•m) A (mm) Flare shape
Ø9.5 32.7~39.9 12.8~13.2
Ø15.9 61.8~75.4 19.3~19.7
NOTE You must use a torque wrench but if you are obliged to
install the unit without a torque wrench, you may follow
the installation method mentioned below.
After the work is finished, make sure to check that
there is no gas leak.
When you keep on tightening the flare nut with a
spanner, there is a point where the tightening torque
suddenly increases. From that position, further tighten
the flare nut within the angle shown below:
A Forward
B Backward
C Sideways
D Downward
1 Drill
2 Center area around knockout hole
3 Knockout hole
4 Slit
5 Connecting pipe liquid (field supply)
6 Bottom frame
7 Front plate
8 Pipe outlet plate
9 Screw front plate
10 Pipe outlet plate screw
11 Gas line copper gasket supplied with the unit (1) (make
sure to always use the copper gasket).
1 Receiver mounting plate
2 Piping cover (rear)
12 3 4
1 Piping union
2 Spanner
3 Flare nut
4 Torque wrench
R=0.4~0.8
45 ±
2
90
±
2
A
Pipe size
Further tightening
angle
Recommended
arm length of tool
Ø9.5 (3/8") 60~90° ±200 mm
Ø15.9 (5/8") 30~60° ±300 mm
A Front connection
B Rear connection
C Side connection
D Bottom connection
1 Gas line copper gasket supplied with the unit (1) (make
sure to always use the copper gasket).
2 Gas line piping supplied with the unit (3)
3 Gas piping (field supply)
4 Cut to the appropriate length.
5 Gas line piping supplied with the unit (2)
1 Putty or insulating material
(procured locally)
Make sure to keep the valve open during operation.
1 Service port
2 Shut-off valve
3 Field piping connection
4 Valve cover
1 Spanner
2 Torque wrench
1
3
4
1
2
2