Acson C Serie Instructions D'installation page 8

SPECIAL PRECAUTIONS WHEN DEALING WITH R410A UNIT
R410A is a new HFC refrigerant which does not damage the ozone layer. The working pressure of this new refrigerant is 1.6 times higher than
conventional refrigerant (R22), thus proper installation/servicing is essential.
• Never use refrigerant other than R410A in an air conditioner which designed to operate with R410A.
• POE oil is used as lubricant for R410A compressor, which is different from the mineral oil used for R22 compressor. During installation or
servicing, extra precaution must be taken not to expose the R410A system too long to moist air. Residual POE oil in the piping and components
can absorb moisture from the air.
• To prevent mischarging, the diameter of the service port on the flare valve is different from that of R22.
• Use tools and materials exclusively for refrigerant R410A. Tools exclusively for R410A are manifold valve, charging hose, pressure gauge, gas
leak detector, flare tools, torque wrench, vacuum pump and refrigerant cylinder.
• As an R410A air conditioner incurs higher pressure than R22 units, it is essential to choose the copper pipes correctly. Never use copper pipes
thinner than 0.8mm even though they are available in the market.
• If the refrigerant gas leakage occurs during installation/servicing, be sure to ventilate fully. If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
• When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigerant cycle.
1. Vacuuming
• Vacuuming is necessary to eliminate all moisture and air from
the system.
• Before vacuuming, perform leak check for refrigerant circuit.
• After the system piping are properly connected, connect the
flexible hoses to the correct charging nipples.
• Ensure that flexible hose from charging nipples are connected
to the vacuum pump via standard servicing valves and pressure
gauges (gauge manifold).
• Vacuum the air conditioner system to at least 500 microns Hg.
• Do not start the unit when the system is engaged in vacuuming.
2. Charging
• Before charging, the vacuum must be held at 500 microns Hg
for at least 15 minutes, then break vacuum by charging R22.
• Operate the unit for 15 minutes and ensure the refrigerant charges
is correct by monitoring running current, gas and liquid line
pressures.
• Suction and discharge pipe pressure should be in the region of
75 psig and 275 psig generally.
• After ensuring the system is correctly charged, remove flexible
hose from charging nipples and replace caps.
If there is a power cut when the unit is operating, it will automatically resume the same operating mode when the power is restored. (Applicable
only to units with this feature).
Cooling Heating
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All manuals and user guides at all-guides.com
VACUUMING AND CHARGING
AUTO RANDOM RE-START FUNCTION
INDICATOR LIGHTS
Operating / Faulty Indication
- Cool mode
Heat mode
- - Sleep mode
Timer
- Defrost
Indoor sensor missing / Short
Outdoor sensor missing / Short
Communication error
Compressor overload
Pump fault
Compressor overheat / Gas leak
Outdoor overcurrent
IPM / PFC / Partial switching
- - Indoor fan feedback error
3. Additional Charge
The refrigerant is pre-charged in the outdoor unit. If the piping length
is less than 7.62m (25ft), then additional charge after vacuuming is
not necessary. If the piping length is more than 7.62m (25ft), then
use the additional charge valve as indicated in the table.
Cooling Only (R22)
Indoor
Model
Outdoor
L=10m
L=12m
L=15m
Cooling Only (R410A)
Indoor 5CKX10C
Model
Outdoor 5SLX10C
L=10m
L=12m 0.032kg
L=15m
Heat Pump (R410A)
Indoor 5CKX10CR 5CKX15CR 5CKX20CR
Model
Outdoor 5SLX10CR 5SLX15CR 5SLX20CR
L=10m
L=12m 0.050kg
L=15m
6
CKX20C
SLV20B
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0.021kg
0.066kg
5CKX15C 5CKX20C
5SLX15C 5SLX20C
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- 0.019kg
- - 0.059kg
- 0.027kg -
0.072kg -
- - 0.059kg
Action
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