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When connecting a Cylinder or Hydrobox unit, be aware of the following points because the Cylinder and Hydrobox unit are different from other indoor units.
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(EHST20C-MEC, EHST20D series, EHPT20X series, EHSD series, EHSC-MEC, ERSD series, ERSC series and EHPX series cannot be connected.)
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unit, the maximum total capacity of the units that can operate at the same time is 100% of the outdoor unit capacity.)
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C. (Dip SW1-2 on the Cylinder or Hydrobox unit must be changed to OFF.)
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Perform the test run for the Cylinder or Hydrobox unit from the indoor unit.
(For details about the test run, refer to the installation manual for the Cylinder or Hydrobox unit.)
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Perform the procedures in 7.3.
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If a system includes one or more cooling-only indoor units, set the entire system as a cooling system.
Set the units as indicated in table 4.
Table 4 Cooling-only setting procedure
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Setting
Outdoor unit
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Branch box
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DIP switch SW4-5 on branch box controller circuit
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Indoor unit
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DIP switch SW3-1 on indoor unit controller circuit
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M, S, P Series
Setting is not necessary.
