VRF Heat Pump vs Heat Recovery

Learn the difference between a VRF Heat Recovery System and a VRF Heat Pump System. See how VRF Systems work, and how the use of a VRF Heat Recovery Branch Selector Box improves energy efficiency. These HVAC systems can be used in various commercial and residential properties.

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[dusdnd]

I can't see how a VRF Heat Recovery system, as shown ~5:16, would be more of an investment. The refrigerant lines should be about a wash because you're not running all of the head units to the outdoor units, but you have the one extra refrigerant line between the outdoor unit of the branch controller. You also have only one outdoor unit and that branch controller should cost less than an additional outdoor unit.

[eyadnazer]

thank you for the valuable explanation.
is there an explanation for the processes that take place inside controller box?
how the simultaniuos operations is going?

[Saifjuni]

Had this confusion how the all weather ACs function, thought more over it and came to the conclusion that we cant make the refrigerant do both the jobs while just by making the refrigerant flow in one direction, so the only option left is to reverse the direction of flow of refrigerant and now while searching more about the system functioning got the answer that it actually is the thing done in the systems .
But one thing is still confusing about the capacity of the heat exchangers(evaporator and condenser) are they mode of same capacity because it seems more unlikely to have the evaporator of same capacity needed for the condenser of same capacity, or is there any other thing that is done to make the system work for both the cooling and heating???

[saadammar]

What are controlling and monitoring parameter for Fan wall unit for CHW valve, supply duct actuator, temp sensors and pressure sensors

[willysnowman]

This sounds like it could work well with a geothermal system.