Availability Schedule Name for zonehvac:baseboard

asked 2026-02-25 09:33:50 -0500

YLi's avatar

updated 2026-02-26 08:50:38 -0500

I have a question about how to interpret the Availability Schedule Name field for zoneHVAC component, e.g., ZoneHVAC:Baseboard:RadiantConvective:Water.

From the Input Output Reference is that this schedule indicates “whether the hot water baseboard heater unit can run during a given time period", however, I am not sure does it represent the existance of the unit or the availability of hot water/energy supply to the unit?

For example, I am modeling a simple boiler + hot-water baseboard (radiator) system and the boiler has its own on/off schedule (e.g., nighttime off). For the baseboard, I am unsure whether Availability Schedule Name should follow the same schedule as the boiler, or ON 24/7. Since when I compare the two setting, the zone air temperature results during boiler “off” periods are very different(the follow schedule has much lower temp than on 24/7). This surprised me because I checked the heat transfer output and confirmed that during the boiler-off period there is no heat delivered to the zone (no convective/radiant heat gain from the baseboard).

So what is the intended/actual algorithmic meaning of Availability Schedule Name for this object? what is the correct way to set the schedule?

edit retag flag offensive close merge delete