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Thread: Hitachi R22
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10-02-2010, 10:51 PM #1
Hitachi R22
I'm looking for some data for a Hitachi RAS-5FS2 2pipe VRF.
Its about 12 years old and runs on R22.
Does anybody know what the factory charge amount is for this unit?
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30-03-2010, 04:51 PM #2
Re: Hitachi R22
R22 is very easy to charge what i use to do is on high side intriduce liquid and wait till the pipe unfreezes and stop it. Turn it on an turn the bottle and charge vapor of course with the manometers with outside temp 28 -30 degrees you should have it around 60 on low side and high side 225 , remember if the house is too hot your low side will be high so do it with patience, by the way r22 is not available any more at least here in spain.
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31-03-2010, 10:07 AM #3
Re: Hitachi R22
If you are still looking for this info I have probably got a service manual. Let me know .
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