Use an outside air loop with no conditioning with ZoneHVAC components

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My actual building has water-cooled heat pumps cooling and heating each individual spaces, and there are several rooftop mounted supply air fans that supply 100% OA with no conditioning whatsoever, all load is handled at the space level.

I'm trying to use:

• Zone HVAC equipment for each zone: ZoneHVAC:WaterToAirHeatPump. I've set the outdoor air flow rates (cooling, heating, no load) to 0 on this
• An AirLoopHVAC with nothing but an outside air system, a supply fan, and serving each zone through an AirTerminal:SingleDuctUncontrolled object. That will allow me to model the actual fan power consumption, and any DCV strategy I want to try.

I want the ZoneHVAC equipment to size correctly with the unconditioned outside air being brought in by the AirLoopHVAC.

I've tried to set the zone sizing objects as follow:

Yes,                     !- Account for Dedicated Outdoor Air System
ColdSupplyAir,      !- Dedicated Outdoor Air System Control Strategy
33.2,                    !- Dedicated Outdoor Air Low Setpoint Temperature for Design {C}
8.7;                      !- Dedicated Outdoor Air High Setpoint Temperature for Design {C}

Where 33.2 is my summer design day dry bulb and 8.7 is my winter design day dry bulb.

This is because I read in the I/O Reference:

ColdSupplyAir means that the ventilation air will be used to supply cooling to the zone. Cold outside air is heated to the upper setpoint; warm outside air is cooled to the lower setpoint. A good choice for the setpoints would be 12.2 and 14.4 degrees C.

Problem is, I'm getting the following severe errors:

** Severe  ** Sizing:Zone="XXXX", invalid data.
**   ~~~   ** ... Dedicated Outside Air Low Setpoint for Design must be less than the High Setpoint

What am I missing?

(If you see a better way to model this situation, let me know)