SiBE341027
Features
General Information
13
Fill nitrogen gas and check for deterioration or leakage in the existing piping.
Leave the piping in 3.3MPa for 24 hours and confirm that there is no pressure drop.
Remove the existing equipment and wiring work
Air tight test of existing piping
Vacuum drying
Remove the existing indoor/outdoor units and remote controllers.
Use the existing power supply
Test operation on installation (automatic contamination recovery and automatic refrigerant charge)
(Additional refrigerant charge is required. Refer to the installation manual in detail.)
No
No
Use sheathed vinyl cord or wire (2 wire) with 0.75 to 1.25 mm
2
for the transmission
wire and the remote controller wire.
Use and sheathed vinyl cord or wire (3 wire) with 0.75 to 1.25 mm
2
for the cool/heat
selector.
New wiring work is
needed.
Check the voltage, the number of phases and breaker capacity of the existing
power supply.
When using the existing power supply, check for the aging of the equipment and
the existence of damages.
Check to confirm that the earth-leakage circuit breaker is capable of handling
high harmonics.
Check the installation of indoor unit, outdoor unit and remote controller and so on. Check
the working of transmission wiring, power wiring, ground-wiring and wrong wiring.
New power supply is
needed.
If the pipe diameter and piping length are known, calculate the insufficient amount
of refrigerant and additionally charge in the liquid pipe. Write down the amount of
additional refrigerant charging.
If the check operation is not
completed normaly, error code
“U3” is displayed and normal
operation is not possible.
Adjust the test operation
⇒
Delivery
(Continued for the previous page)
