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Dear Modeling Community,

I have setup humidification and dehumidification setpoint schedules of always 35% and 70%, respectively. However, when checking the Zone Conditions Humidity table there are significant hours where the humidity is below 30%. This is strange because based on the setpoint the zone should not be allow to drop below 35%.

I am using a PTHP, could it be that the system does not have any humidification/dehumidification functionality so although I have a schedule set there is no control to the humidity?

Any other suggestions why the humidity is uncontrolled in my space, despite defining setpoint schedules would be very appreciated.

Thank you, Justin

Dear Modeling Community,

I have setup humidification and dehumidification setpoint schedules of always 35% and 70%, respectively. However, when checking the Zone Conditions Humidity table there are significant hours (~3750 hours) where the humidity is below 30%. This is strange because based on the setpoint the zone should not be allow to drop below 35%.

For context, the project is a Midrise Apartment so the occupancy doesn't drop down like office. I would suspect humidification to be necessary throughout most of the day.

I am using a PTHP, could it be that the system does not have any humidification/dehumidification functionality so although I have a schedule set there is no control to the humidity?

Any other suggestions why the humidity is uncontrolled in my space, despite defining setpoint schedules would be very appreciated.

Thank you, Justin

Dear Modeling Community,

I have setup humidification and dehumidification setpoint schedules of always 35% and 70%, respectively. However, when checking the Zone Conditions Humidity table there are significant hours (~3750 hours) where the humidity is below 30%. This is strange because based on the setpoint the zone should not be allow to drop below 35%.

For context, the project is a Midrise Apartment so the occupancy doesn't drop down like office. I would suspect humidification to be necessary throughout most of the day.

I am using a PTHP, could it be that the system does not have any humidification/dehumidification functionality so although I have a schedule set there is no control to the humidity?

Any other suggestions why the humidity is uncontrolled in my space, despite defining setpoint schedules would be very appreciated.

Thank you, Justin