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Thread: Heat Pump Query
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18-11-2011, 08:32 PM #1
Re: Heat Pump Query
If an NRV has 5 bar on the upstream side and 1 bar on the downstream side, you would not get flow until the pressures equalized (plus the resistance of the mechanism). NRV 1 is only active (ie; blocking flow) in cooling mode and NRV 2 is only active in heating mode so there cannot be a working circuit without them (IMHO).