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How to create air to air loop?

asked 2017-02-21 15:26:18 -0500

sga's avatar

I want to create an air to air loop using HVAC such that the air that is entering the house will be warmed up by the air going out of the house. This would then work instead of ventilation. I have created an empty air loop and added the thermal zones in which I want the HVAC system to work, but then I am not sure what else to add so that it will work.. What more and where do I need to add things to create such a loop?

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answered 2017-02-21 16:02:55 -0500

I assume you are talking about a air to air heat recovery wheel? If that is the case you will need to add the following to the supply equipment side of your air loop: - AirLoopHVAC:OutdoorAirSystem - Fan:ConstantVolume or FanVariableVolume - HeatExchanger:AirToAir:SensibleAndLatent - SetpointManager (there are several of these depending on the control you are looking for)

You will also need to assign an operation schedule under the control tab of the loop.

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Thank you, I added all that you mentioned and then I had the following error: Severe ** IP: IDF line~4297 Object=CONTROLLER:MECHANICALVENTILATION, name=CONTROLLER MECHANICAL VENTILATION 1, Required Field=[Zone 1 Name] was blank. How can I fix that?

sga's avatar sga  ( 2017-02-22 15:30:09 -0500 )edit

Your air handler does not have any zones attached to it. The problem should go away once you add some zones, and if it doesn't then here is the expanded checklist for that error.

Kyle Benne's avatar Kyle Benne  ( 2017-02-22 15:33:23 -0500 )edit

My loop looks like the one in the picture above, except that I have added my thermal zones on the bottom in the middle.. Where can I add any outdoor air, or anything else I would need to fix that error?

sga's avatar sga  ( 2017-02-23 15:34:40 -0500 )edit

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Asked: 2017-02-21 15:26:18 -0500

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Last updated: Feb 21 '17