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Installation of indoor unit
EDUS281120_a
176
RZR-P, RZQ-P(9)
C: 3PN07521-2C
11
English
NOTE
Use a pipe cutter and fl are suitable for the type of refrigerant.
•
To prevent dust, moisture or other foreign matter from infi ltrating the tube, either pinch the end or cover it
•
with tape.
Do not allow anything other than the designated refrigerant to get mixed into the refrigerant circuit, such
•
as air, etc.
If any refrigerant gas leaks while working on the unit, ventilate the room thoroughly right away.
•
The outdoor unit is charged with refrigerant.
•
Ester oil or ether oil
Fig. 13
Torque wrench
Spanner
Pipin
g
union
Flare nut
Fig. 12
Use copper alloy seamless pipes.
•
Be sure to use both a spanner and torque wrench together, as shown
•
in the drawing, when connecting or disconnecting pipes to/from the
unit.
(Refer to Fig. 12)
Refer to “Table 1” for the dimensions of fl are.
•
When connecting the flare nut, coat the flare section
(inside)
with ester
•
oil or
ether oil, rotate three or four times first, then screw in.
(Refer to Fig. 13)
CAUTION
Over-tightening may cause the fl are nuts to crack or the refrigerant to
•
leak.
Use the fl are nut included with the unit.
•
Refer to Table 1 for tightening torque.
•
Table 1
Pipe size
Tightening torque (ft-lbf)
Flare dimensions A (in.)
Flare shape (in.)
φ
3/8”
24.1 – 29.4
0.504 – 0.520
R0.016-0.031
A
90
0
Ⳳ
2
0
45
0
Ⳳ
2
0
φ
5/8”
45.6 – 55.6
0.760 – 0.776
Not recommended but in case of emergency
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 fi nished, make sure to check that there is no gas leak.
When you keep on tightening the fl are nut with a spanner, there is a point where the tightening torque
suddenly increases. From that position, further tighten the fl are nut the angle shown below:
Table 2
Pipe size (in.)
Further tightening angle
Recommended arm length of tool (in.)
φ
3/8”
60 to 90 degrees
Approx. 7
7/8”
φ
5/8”
30 to 60 degrees
Approx. 11
13/16”
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Page 47: ...Wiring diagrams EDUS281120_a 46 RZR P RZQ P 9 FAQ18PVJU FAQ24PVJU 3D046039D ...
Page 61: ...Safety devices list EDUS281120_a 60 RZR P RZQ P 9 8 3 FAQ FAQ18PVJU FAQ24PVJU 4D047085B ...
Page 91: ...Capacity tables EDUS281120_a 90 RZR P RZQ P 9 RZR36PVJU RZR42PVJU 3D071685 ...
Page 92: ...EDUS281120_a Capacity tables RZR P RZQ P 9 91 RZQ36PVJU9 RZQ42PVJU9 C 3D047383B ...
Page 101: ...Sound Levels Reference EDUS281120_a 100 RZR P RZQ P 9 FBQ18PVJU FBQ24PVJU FBQ30PVJU FBQ36PVJU ...
Page 102: ...EDUS281120_a Sound Levels Reference RZR P RZQ P 9 101 FBQ42PVJU ...
Page 104: ...EDUS281120_a Sound Levels Reference RZR P RZQ P 9 103 RZQ42PVJU9 RZR42PVJU 4D072769 ...