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7. Setting addresses and operating units
8. Checklist after installation
9. Test run
10. Important information to be passed on to the end users
The address switch of each BC controller is set to “000” when shipped from the factory.
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The BC controller address should generally be set to 1 + the address of the outdoor unit. However, if this would result in it having the same address as
another outdoor unit, set the address between 51 and 100, making sure that it is different from the address of other controllers.
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When connecting multiple indoor units to one branch port
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Warning:
After the installation has been completed, check for refrigerant leaks.
- If the refrigerant leaks, oxygen starvation may result. If the leaked refrigerant comes in contact with a heat source, toxic gas will be generated.
After completion of installation work, check the item shown in the table below. If any abnormality is noticed, identify the problem and correct it. Leaving the problem
unattended may cause mechanical failure or malfunctions and raise safety risks.
No.
Item to be checked
1
Check for refrigerant gas leakage.
Before commencing a test run please check the following:
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After installing, piping and wiring the indoor units and BC controllers, check to see again that there is no refrigerant leakage and no slack on power and
control cables.
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Caution:
Never measure the insulation resistance of the terminal block for any control cables.
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