Daikin RXYQ96PATJ [90/108] Air tight test and vacuum dry ing
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Daikin RXYQ96PATJ [90/108] Air tight test and vacuum dry ing

Daikin RXYQ96PATJ [90/108] Air tight test and vacuum dry ing
EDUS391000-N_a Installation
Installation of Outdoor Units 89
8. Attach insulation sleeves
9. Power supply terminal block
10. Ground terminal
11. Clamp (1) (accessory)
12. Vinyl tube (accessory)
CAUTION
• Be sure to use crimp-style terminal with insulating sleeves for
connections. (See the figure below.)
• For wiring, use the designated power wire and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
board.
• Use an appropriate screwdriver for tightening the terminal screws.
A screwdriver with a small head will strip the head and make
proper tightening impossible.
• Over-tightening the terminal screws may break them.
See the following table for the tightening torque of the terminal
screws.
• When pulling the ground wire out, wire it so that it comes through
the cut out section of the cup washer. (See the figure below.) An
improper ground connection may prevent a good ground from
being achieved.
• When two wires are connected to a single terminal, connect them
so that the rear sides of the crimp contacts face each other. Also,
make sure the thinner wire is on top, securing the two wires
simultaneously to the resin hook using the included clamp (1).
7-6 Procedure for Wiring Inside Units
• Referring to figure 24, secure and wire the power and transmission
wiring using the included clamp (1), (2), and (3).
• Wire so that the ground wiring does not come into contact with the
compressor lead wiring.
If they touch, this may have an adverse effect on other devices.
• The transmission wiring must be at least 2 in. away from the power
wiring.
• Make sure all wiring does not make contact with the pipes
(hatching parts in the figure 24).
(Refer to figure 24)
1. Retain with accessory clamp (3).
2. Electric conduit
3. When routing out the power/ground wires from the left
side.
4. When routing out the transmission wiring from the open-
ing for piping.
5. When routing out the power/ground wires from the front.
6. Clear over 2 in..
7. When routing out the transmission wiring from the knock-
out hole.
8. Retain to the back of the column support with the acces-
sory clamp (2).
9. When routing out the power/ground wires from the right
side.
10. Power wiring
11. Transmission wiring
12. Ground wire
Precautions when knocking out knockout holes
• To punch out a knockout hole, hit it with a hammer.
• Open an appropriate hole as needed.
• After knocking out the holes, trim off the burr, then we recommend
you to paint the edges and areas around the edges using the
repair paint to prevent rusting.
• Power line : Open a knockout hole as shown at left and connect
it using a conduit.
• Transmission line : Connect it using a conduit in the knockout
hole on the right.
• After wiring work is completed, check to make sure there are no
loose connections among the electrical parts in the electrical
components box.
8. AIR TIGHT TEST AND VACUUM DRY-
ING
• After finishing piping work, carry out airtight test and vacuum drying.
NOTE
• Always use dry nitrogen gas for the airtightness test.
• Absolutely do not open the shutoff valve until the main power ciruit
insulation measurement has been completed. (measuring after
the shutoff valve is opened will cause the insulation value to drop.)
<Needed tools>
<The system for air tight test and vacuum drying>
Referring to figure 25, connect a dry nitrogen tank, refrigerant tank,
and a vacuum pump to the outside unit.
Screw size Tightening torque (ft · lbf)
M8 Power terminal, ground terminal 4.06 ~ 5.38
Power wire
Crimp-style terminal
Insulating sleeve
Crimp-style terminal
Cup washer
Cut out section
Terminal
block
Crip style
terminal
Wire : narrow
Wire : thick
Resin hook
Gauge manifold
Charge hose
valve
• To prevent entry of any impurities and insure
sufficient pressure resistance, always use the
special tools dedicated for R410A.
• Use charge hose that have pushing stick for
connecting to service port of shutoff valves or
refrigerant charge port.
Vacuum pump
• The vacuum pump for vacuum drying should
be able to lower the pressure to below 500
microns.
• Take care the pump oil never flows backward
into the refrigerant pipe during the pump stops.
Burr
Knockout hole
Left side Right side
Conduit
(field supply)
Lock nut
(field supply)
Conduit mounting plate
(accessory)

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