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Modelling two VRF outdoor units for single zone

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I am currently modeling a VRF system that serves one thermal zone. The brief document that I have states that the zone is served by two outdoor VRF units. I was wondering is there a way to model this? Do i have to add up their cooling/heating capacities and input power or there is some other way around it?

Also, it does mention that the zone also has two indoor units. This could also means that each outdoor unit is connected to each indoor unit. Is it common practice to have two VRFs serving one zone?

asked 2015-06-24 11:21:12 -0500

updated 2015-07-25 10:12:50 -0500

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Is it a large zone? Often two small units are used in larger zones. You can have more than one ZoneHVAC equipment in each zone. I've never used two of the same type, but I don't see why you couldn't. Also, you can connect more than one indoor unit to one outdoor unit using the ZoneTerminalUnitList.

answered 2015-06-30 09:56:13 -0500

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Multiple ZoneHVAC equipment of the same type can be included in the ZoneHVAC:EquipmentList where equipment sequencing is specified.

MatthewSteen (2015-07-25 10:11:46 -0500) edit

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