AOU18RLXFZ Installation Manual

En-11
Blank cap
Cap
Hexagon wrench
Spindle
Charging port
Service hose
with valve core
Service hose
with valve core
Service hose
with valve core
Gauge manifold
Charge hose
Vacuum pump
Lo
Hi
3 places
CAUTION
Do not purge the air with refrigerants, but use a vacuum pump to vacuum the installa-
tion! There is no extra refrigerant in the outdoor unit for air purging!
Use a vacuum pump and gauge manifold and charging hose for R410A exclusively.
Using the same vacuum for different refrigerants may damage the vacuum pump or
the unit.
Additional charging6. 2.
Refrigerant suitable for a total piping length of 98 ft is charged in the outdoor unit at the
factory.
When the piping is longer than 98 ft, additional charging is necessary.
For the additional amount, see the table below.
Total piping
length
30m
(98 ft)
40m
(131 ft)
50m
(164 ft)
Additional
refrigerant
None
200g
(7.1 oz)
400g
(14.1 oz)
20g/m
(0.21 oz/ft)
CAUTION
When moving and installing the air conditioner, do not mix gas other than the speci¿ ed
refrigerant (R410A) inside the refrigerant cycle.
When charging the refrigerant R410A, always use an electronic balance for refrigerant
charging (to measure the refrigerant by weight).
When charging the refrigerant, take into account the
slight change in the composition of the gas and liquid
phases, and always charge from the liquid phase side
whose composition is stable.
Gas
Liquid
R410A
Add refrigerant from the charging valve after the completion of the work.
If the units are further apart than the maximum pipe length, correct operation cannot
be guaranteed.
POWER7.
WARNING
The rated voltage of this product is 208/230 V A.C. 60 Hz.
Before turning on verify that the voltage is within the 187 V to 253 V range.
Always use a special branch circuit and install a special receptacle to supply power to
the air conditioner.
Use a special branch circuit breaker and receptacle matched to the capacity of the air
conditioner. (Install in accordance with standard.)
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Install a leakage special branch circuit breaker in accordance with the related laws
and regulations and electric company standards.
CAUTION
The power source capacity must be the sum of the air conditioner current and
the current of other electrical appliances. When the current contracted capacity is
insuf¿ cient, change the contracted capacity.
When the voltage is low and the air conditioner is dif¿ cult to start, contact the power
company the voltage raised.
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