Radiators Sizing to Zero, Manual Sizing Not Providing Heat
Posted: Fri Oct 31, 2014 3:14 pm
I have a system set up in ApacheHVAC and would like to use radiant heat for the perimeter zones.
Here's what I've done:
Set up a number of constant speed, single fan, dual duct systems with no radiant heat. No big problems. Lots of small ones, but I got through it. The system was autosized and works fine.
I was told that there is radiant heat in the building and proceeded to add raditors to the perimeter zones that have it. Autosize was checked, I ran system sizing, and the radiators were sized to zero Btu/h.
I tried manually sizing a couple of radiators, but that does not work either.
What am I doing wrong here? I would like the hot deck of the dual duct system to provide reheat (and maybe a little extra heating) and the radiators to provide the majority of the building heating.
Thank you.
Here's what I've done:
Set up a number of constant speed, single fan, dual duct systems with no radiant heat. No big problems. Lots of small ones, but I got through it. The system was autosized and works fine.
I was told that there is radiant heat in the building and proceeded to add raditors to the perimeter zones that have it. Autosize was checked, I ran system sizing, and the radiators were sized to zero Btu/h.
I tried manually sizing a couple of radiators, but that does not work either.
What am I doing wrong here? I would like the hot deck of the dual duct system to provide reheat (and maybe a little extra heating) and the radiators to provide the majority of the building heating.
Thank you.