Normally reusing the existing piping without pipe cleaning or replacement of pipes causes the deterioration of refrigerant oil and/or clogging of the refrigerant circuit. Chloride residue build-up in existing pipes can be a source of trouble and iron particles and sludge produced in the event of a compressor failure.
All of these aspects can lead to the malfunction of the heat pump and ultimately make it challenging to reuse the existing pipework and wiring if not maintained properly. To counter this, Mitsubishi Electric has applied several unique technologies to allow for “cleaning-free pipe reuse”.
Mitsubishi Electric R32 and R410A outdoors are equipped with a “wide strainer” device within the refrigerant inlet and outlet pipe. The wide strainer traps iron particles, allowing cleaning-free pipe reuse.
Friction inside the compressor is reduced by using technology unique to Mitsubishi Electric. The Heat Caulking Fixing Method, or coating the edge of the blade in the scroll compressor, suppresses the increase in temperature that causes refrigerant oil deterioration.
Resolves wiring recycling issues, compatible with other wiring connection methods*. The wiring method has been improved by Mitsubishi Electric, making it possible to use methods which differ from those normally utilised for standard control and power supply configurations.
With the use of the power supply terminal kit, Mitsubishi Electric P-Series outdoor units are compatible with the dual harness control line/power line and separate power supply methods. Using a power-supply terminal kit, wiring can be efficiently reused at the time of system renewal regardless of the method the existing system uses.
* Usage may be limited due to wiring type diameter