Why are my radiators, direct acting heaters and chilled ceilings not working in ApacheHVAC?
The components 'Direct acting heater', 'Radiator' and 'Chilled ceiling' need to have their controls set up in a particular way.
You must click on 'Sensor' to generate an on/off control signal, and this signal must be on for the device to operate. This feature allows the heater/cooler to be turned off under certain conditions, but in most cases all that's required is that a continuous 'on' signal is generated. This can be done by setting a high Set Point such as 50C (make sure 'High Sensor Input' is OFF).
In the case of a heater the maximum heater output is entered as 'Output at Min. Control Signal (kW)' - which is perhaps not immediately obvious, but makes sense when you understand that this is the output of the device when the sensed temperature is low.