Hi.
I am using EMS to control the on/off status of a heat pump. I have sensors for each Zone Mean Air Temperature. I also have a sensor for the heating setpoint defined in the schedules(It is set @ 22 degrees for each period ) .The Zone Mean Air Temperature output variable of Zone3 is being compared against the heating setpoint to decide whether or not to turn the heat pump on.
The program defines the turn on point as the heating setpoint, and the turn off point as the heating setpoint + Toffset. The actuator is set up so for on/off supervisor control to actuate the heating loop.
The program is having no influence on the output temperatures. The EDD file suggests that the program recognizes the heating setpoint ( 22 and 24). I am confident that the Actuator is set up correctly but results suggest that it is not doing what it is meant to do.
It is a very simple program, but after discussing with a colleague over the last couple of days we have been unable to get it to work. I attached the idf file. I have also attached a diagram of the heating loop being used. If anyone has any suggestions I thank you in advance.
Kindest Regards
John Kirby
Attachment not found: d:\eudora\attach\HPWHEMSProgram22.idf
Attachment not found: d:\eudora\attach\Air_to_Water_Heat_Pump_-_Baseboard_Heaters.png