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31-01-2013, 02:17 PM #1
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Heat pump compressor ZH45K4E with frequency converter
In my heat pump I have compressor ZH45K4E is it possible to connect it to frequency converter (to make it variable speed)? I understand there can be problems with greasing as oil circulation may decrease, but may be runing at 70-80% will not be harmfull, also COP will go down. Anybody has experience with it?
Now days I would install varaible speed compressor designd specially for this kind of operation and control.
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31-01-2013, 10:57 PM #2
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Re: Heat pump compressor ZH45K4E with frequency converter
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31-01-2013, 10:59 PM #3
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Re: Heat pump compressor ZH45K4E with frequency converter
http://www.emersonclimate.com/europe...llMotors_2.pdf found this too
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31-01-2013, 11:00 PM #4
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Re: Heat pump compressor ZH45K4E with frequency converter
They do not recommend it but it may be possible if you can get clearance from Emmerson.
Read para 5.14, here...
http://www.emersonclimate.com/europe...oll_FULL_0.pdfBrian - Newton Abbot, Devon, UK
Retired March 2015
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01-02-2013, 05:51 AM #5
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Re: Heat pump compressor ZH45K4E with frequency converter
from 5.14..... is possible but should not be done without specific Application Engineering review.
Thanks a lot. I will try to push some info from local representative and in meantime will start installation of ABB inverter.
