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For SetpointManager:ReturnAirBypass, the setpoint temperature is the supply air temperature at outlet node of the airloop outlet branch.

The setpoint temperature is modified to account for any potential fan heat gain.

Tset,mod = Tset - (Tloop,out -Tmixer,out )

The calculation of the two branch:

m,bypass = (m,totalTset,mod - m,nonbypass T,nonbypass )/T,bypass

So you may need to put all your equipment in the nonbypass branch.

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No.2 Revision

For SetpointManager:ReturnAirBypass, the setpoint temperature is the supply air temperature at outlet node of the airloop outlet branch.

The setpoint temperature is modified to account for any potential fan heat gain.

Tset,mod = Tset - (Tloop,out -Tmixer,out )

The calculation of the two branch:

m,bypass = (m,totalTset,mod - m,nonbypass T,nonbypass )/T,bypass

So you may need to put all your equipment in the nonbypass branch.

At least, you should not put the SetpointManager:MixedAir after the heating coil.