27
Refrigerant tube port
●
Use caulking, putty, or a similar material to fill any gaps at the refrigerant tube port
(
) in order to prevent rainwater, dust or 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
Tubing cover
Tubing routed out
through the front side
Bottom plate
Tubing routed out
through the bottom
For type 72
Unit: in. (mm)
Unit: in. (mm)
Unit: in. (mm)
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 and the discharge 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.)
Cap tightening torque
Type 72
(6 Ton)
Type 96
(8 Ton)
Type 120
(10 Ton)
Type 144
(12 Ton)
The liquid
tube valve
Service
port cap
lbs · inch
90-100
N · m
10-12
{k
g
f · cm}
{100-120}
Valve cap
lbs · inch
120-170
190-240
N · m
14-20
22-28
{k
g
f · cm}
{140-200}
{220-280}
Flare nut
lbs · inch
300-360
430-610
N · m
34-42
49-61
{k
g
f · cm}
{340-420}
{490-610}
The
discharge
tube valve
Service
port cap
lbs · inch
90-100
90-100
N · m
10-20
10-20
{k
g
f · cm}
{100-200}
{100-200}
Valve cap
lbs · inch
420-530
170-220
N · m
48-60
20-25
{k
g
f · cm}
{480-600}
{200-250}
Flare nut
lbs · inch
590-710
-
N · m
67-81
-
{k
g
f · cm}
{680-820}
-
The suction
tube valve
Service
port cap
lbs · inch
90-100
N · m
10-12
{k
g
f · cm}
{100-120 }
Valve cap
lbs · inch
170-220
N · m
20-25
{k
g
f · cm}
{200-250}
The balance
tube valve
Service
port cap
lbs · inch
90-100
N · m
10-12
{k
g
f · cm}
{100-120 }
Valve cap
lbs · inch
170-220
N · m
20-25
{k
g
f · cm}
{200-250}
Flare nut
lbs · inch
120-160
N · m
14-18
{k
g
f · cm}
{140-180}
For type 120/144
Discharge
tube
Service port cap
width 43/64 (17)
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Valve cap
width 1-3/16 (30)
Suction tube
Flare nut
ø1/4 (ø6.35)
Discharge
tube
Balance
tube
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Valve cap
width 3/4 (19)
Flare nut
ø3/8 (ø9.52)
Flare nut
ø5/8 (ø15.88)
Liquid
tube
For type 96
Discharge
tube
Service port cap
width 43/64 (17)
Valve cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Valve cap
width 1-3/16 (30)
Suction tube
Flare nut
ø1/4 (ø6.35)
Discharge
tube
Balance
tube
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Valve cap
width 3/4 (19)
Flare nut
ø3/8 (ø9.52)
Flare nut
ø5/8 (ø15.88)
Liquid
tube
Discharge
tube
Valve cap
width 35/64 (14)
Valve cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Suction tube
Flare nut
ø1/4 (ø6.35)
Discharge
tube
Balance
tube
Valve cap
width 35/64 (14)
Service port cap
width 43/64 (17)
Service port cap
width 43/64 (17)
Valve cap
width 17/16 (27)
Flare nut
ø1/2 (ø12.7)
Liquid
tube
01_302412_Eng.indd 27
2018/7/4 13:30:47
