Report ASHRAE 62.1 with 100% Outdoor Air

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As far as the underlying EnergyPlus model is concerned, you would want to check the Controller:OutdoorAir object. Keep in mind that EnergyPlus provides for separate input for sizing and operation. You are showing here how the sizing input is setup, but not really how the operation input is setup. In the Controller:OutdoorAir object check the input fields related to Minimum Outdoor Air Flow.

I picked one of the systems to look at (they all appear to be similar) It is a single-zone system with a constant volume fan

From the HTML table you posted:

0A_FC -- Packaged Rooftop Heat Pump
Thermal Zone: 0A_FC

v_bz = .00236 m3/s*person * 72.15 ppl + .00032 m3/s*m2 * 268.31 m2 = .256 m3/s
e_z = 1.0 (OS defaults e_z zone air distribution effectiveness of 1.0)
v_oz = v_bz / e_z = .256 m3/s
v_ot = v_oz = .256 m3/s (for single zone systems)
v_ou = sum (v_ot) = .256 m3/s (because it's a single zone system)

v_ps_heating = 0.256 m3/s
v_ps_cooling = 1.814 m3/s

x_s_heating = v_ou / v_ps_heating = .256 m3/s / 0.256 m3/s = 100% OA
x_s_cooling = v_ou / v_ps_cooling = .256 m3/s / 1.814 m3/s = 14.1% OA

This is a system that serves a zone with a very low heating demand. If this were a VAV system, during heating mode, minimum OA flow is higher than the required heating airflow, so you'd need 100% OA to meet the min OA requirement at that flow rate. You could increase the flow rate by lowering the heating supply air temperature. However, this is a CAV system; the fan is one speed and the system is designed for that flow rate. In this case, the cooling flow rate is the driver. Based on my understanding of the VRP calcs, the %OA should be 14.1%, not 100%. I think there might be a bug in E+ VRP calcs for single-zone CAV systems, and I suggest switching to ZoneSum for single-zone systems for now.