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Old 07-01-17, 05:45 AM   #9
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Ok, this makes sense now. None of the heat pump google diagrams that i've seen so far show two metering devices. However a search for two txv's brought up some info on heat pumps having an indoor metering device and an outdoor metering device with check valves for each. Some it seems use a TXV outside and a cap tube on the inside.

With two metering devices, it doesnt seem that having exactly 'matching' HX's is all that important though one still wouldnt want a 5 ton outdoor HX with a 2 ton indoor HX.

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