Daikin RXYSQ4M7V3B, Installation Manual

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RXYSQ4~6M7V3B
VRVII-S system air conditioner
4PW17806-1C Installation manual
7
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.
For RXYSQ6 only
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 indoor-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.
■
For cooling operation under low ambient temperature or any
other operation under low pressure, apply silicon pad or similar
to prevent freezing of the gas stop valve flare nut (see figure).
Freezing of the flare nut may cause refrigerant leak.
9.3. How to use the shut-off valve
Use hexagonal wrenches 4 mm and 6 mm.
■
Opening the valve
1. Place the hex wrench on the valve bar and turn counter-
clockwise.
2. Stop when the valve bar no longer turns. It is now open.
■
Closing the valve
1. Place the hex wrench on the valve bar and turn clockwise.
2. Stop when the valve bar no longer turns. It is now closed.
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 Connecting pipe gas (field supply, except RXYSQ6)
A Forward
B Backward
C Sideways
D Downward
1 Receiver mounting plate
2 Piping cover (rear)
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)
1
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
Silicon sealing pad
(Make sure there is no gap)
Closing direction
Liquid side Gas side
3
4
1
2
2