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2. Examples of the incorrect refrigerant pipe installation for Heat Recovery
Missing HR Changer for serial installation Missing HR Changer for parallel installation
Incorrect order Branch location error
• HR Changer(E) can be installed in series or in parallel.
• For serial installation, the order of HR Changer(E) and MCU(F) is very important.
HR Changer(E) must be installed after the outdoor unit.
If MCU(F) is installed first after the outdoor unit, it will not work properly.
• For parallel installation, HR Changer(E) must be installed after the Y-joint.
If you don’t install HR Changer(E) after the Y-joint, it will not work properly.
• If you install only MCU(F) without HR Changer (E), it happen to occur the error(E214).
Cooling only indoor units must be installed behind the HR Changer.
CAUTION
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