OFF / OFF: Master unit
OFF / ON : Slave unit 1
ON / OFF : Slave unit 2
01-02
OFF / OFF: 0 units (Master unit only)
OFF / ON : 1 unit (1 slave unit connected)
ON / OFF : 2 units (2 slave unit connected)
[Note] Perform in the power OFF state.
Execution
Set the refrigerant circuit address.
(ROTARY SW : REF AD 10, 1)
Set the outdoor unit address.
(DIP SW : SET3-1 / 3-2)
Number of slave units setting. (Master unit only)
(DIP SW : SET3-3 / SET3-4)
1
2
Set according to the length of the connection piping.
Set to "Standard (40 to 65m)" at the factory.
Set using the push button SW on the outdoor unit PC board. (Technical Manual pages 06-101)
[Note] Perform in the power ON state.
Set the refrigerant circuit address and indoor unit address.
Can be set by rotary SW on the indoor unit control PC board or from a remote controller or from a push button
SW on the outdoor unit PC board (automatic address).
[Note] Set the rotary SW on the PC board in the power OFF state.
Perform setting by remote controller and setting from push button SW on the
outdoor unit PC board in the power ON state.
Initial setting
Gas leak test
Use an R410A dedicated leak tester to check for gas leaks.
1
2
3
Confirm the additional refrigerant amount with the installation
manual, etc.
Always take the R410A refrigerant from the cylinder liquid phase
and charge it using the gas phase.
(Do not lay a cylinder with siphon pipe on its side.)
Use an R410A dedicated gauge manifold and charging hose.
Charge refrigerant using the liquid pipe.
When the defined amount of refrigerant cannot charge using the
liquid pipe, charge refrigerant using the gas pipe while opearing
the cooling test run.
Charge refrigerant bit by bit with cautious operation of valve
for the liquid refrigerant back prevention.
If taken from the air phase, since the
composition of the refrigerant which is
charged will change, low performance
and abnormal stop will occur easily.
Prevent erroneous sealing in of
refrigerant.
A leak tester for other than R410A
cannot detect leaks.
Arbitrary numbers can be set in range of 00-99
3
4
4
Number of outdoor units setting.
(DIP SW : SET5-1 / 5-2)
OFF / OFF: 1 (Master unit only)
OFF / ON : 2 (1 master unit + 1 slave unit )
ON / OFF : 3 (1 master unit + 2 slave units)
Turnover & explanation of operation
Address setting
Test run & adjustment
Piping length setting
Addition refrigerant charging
5
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