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Charging additional refrigerant
If you install the excessive length of pipe, add additional refrigerant as 20 g(0.04 lbs) per unit meter ;
refer to the table below.
Refer to the Service Manual for more details on this operation.
Total connecting pipe length (L)
LT 40 m(131 ft)
LT>40 m(131 ft)
Pump down operation
PUMP DOWN (before disconnecing the refrigerant connections for unit
repair, removal or disposal)
Pump-down is an operation intended to collect all the system refrigerant in the outdoor
unit. This operation must be carried out before disconnecting the refrigerant pipe in
order to avoid refrigerant loss to the atmosphere.
1.
Shut off all the liquid valve with the Allen wrench.
2.
Turn the system on in cooling with fan operating at high velocity.
(Compressor will immediately start, provided 3 minutes have elapsed since the last
stop).
3.
After 2 minutes of operation, shut off the suction valves with the allen wrench.
4.
Turn the system off and switch mains supply off.
5.
Disconnect pipes. After disconnection, protect valves and tubing ends from dust.
6.
Compressor damage may occur if run at a negative suction pressure.
※ The designs and shape are subject to change according to the model.
Method for connecting wires
Selecting wires size
B
Nominal
Nominal
dimensions
dimensions
Standard
Allowance
for cable
for screw
dimension
[mm(inch)]
2
2
[mm
(inch
)]
[mm(inch)]
[mm(inch)]
0.75~1.5
4(0.15) 6.6(0.25)
(0.0011~0.002)
4(0.15) 8.5(0.33)
4(0.006)
4(0.15)
9.5(0.37)
12
Adding refrigerant
Chargeless
(LT- 40 m(131 ft) )x 20 g(0.04 lbs)
D
Standard
Standard
Allowance
dimension
dimension
[mm(inch)]
[mm(inch)]
[mm(inch)]
±0.2
+0.3(+0.011)
3.4(0.13)
1.7(0.06)
(±0.007)
-0.2(-0.007)
±0.2
+0.3(+0.011)
5.6(0.22)
3.4(0.13)
(±0.007)
-0.2(-0.007)
d1
E
F
L
Standard
Allowance
Min. Min. Max.
dimension
[mm(inch)]
[mm(inch)]
±0.2
4.1
6
16
4.3(0.16)
(±0.007)
(0.16)
(0.24)
(0.62)
±0.2
6
5
20
4.3(0.16)
(±0.007)
(0.24)
(0.19)
(0.78)
d2
t
Allowance
Min.
[mm(inch)]
±0.2
0.7
(±0.007)
(0.02)
±0.2
0.9
(±0.007)
(0.035)
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