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Refrigerant tube port
● Use caulking, putty, or a similar material to fill any gaps at the
refrigerant tube port (
foreign substances from entering the unit.
* Perform this work even if the tubing is routed out in a downward
direction.
● Tighten each cap as specified below.
Tightening torque for each cap
Cap tightening torque
Width
Service port cap
43/64" (17mm)
35/64" (14mm),
43/64" (17 mm)
Valve cap
3/4" (19 mm)
17/16" (27mm)
For type 72
Service port cap
width 43/64 (17)
Valve cap
width 3/4 (19)
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Flare nut
ø1/4 (6.35)
Flare nut
ø3/8 (9.52)
For type 120/144
Service port cap
width 43/64 (17)
Valve cap
width 17/16 (27)
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Flare nut
ø1/4 (6.35)
Flare nut
ø1/2 (12.7)
00_302411_EN.indd 26
) in order to prevent rainwater, dust or
unit: lbs · inch
unit: N · m
90 - 100
10 - 12
170 - 220
20 - 25
120 - 170
14 - 20
190 - 240
22 - 28
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Valve cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Tubing routed out
through the front side
unit: {kgf · cm}
{100 - 120}
Tubing routed out
{200 - 250}
through the bottom
{140 - 200}
{220 - 280}
For type 96
Service port cap
width 43/64 (17)
Valve cap
width 3/4 (19)
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Flare nut
ø1/4 (6.35)
Flare nut
ø3/8 (9.52)
Do not apply an adjustable wrench
to the hexagonal part.
Do not use two adjustable wrenches when removing or
installing the balance tube flare nut. In particular, do not
apply an adjustable wrench to the hexagonal part at the top
of the valve. (If force is applied to this part, gas leakage will
occur.)
Use two adjustable wrenches, as shown in the figure,
when removing the liquid tube valve flare nut.
1. Do not apply a wrench to the valve cap when
removing or installing the flare nuts.
Doing so may damage the valve.
2. If the valve cap is left off for a long period of time,
refrigerant leakage will occur.
Therefore, do not leave the valve cap off.
3. Applying refrigerant oil to the flare surface can be
effective in preventing gas leakage, however be
sure to use a refrigerant oil which is suitable for
the refrigerant that is used in the system. (This unit
utilizes R410A refrigerant, and the refrigerant oil is
ether oil (synthetic oil).
However, hub oil (synthetic oil) can also be used.)
26
Tubing cover
Bottom plate
Unit: in. (mm)
Valve cap
width 43/64 (17)
Service port cap
width 43/64 (17)
2018/7/4 13:27:45
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