Quote:
Originally Posted by mysticodex
Does anyone know why Concord Buildings, including this one, have their A/C chiller system only come on when the outside temp is above 10c? West facing properties are going to warm up on sunny days, even when its in the <10c range, and A/C will be required to run COLD.
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Do you have in unit heat pumps?
Some systems can only be heat or cold since they are 2 lines running to the heat pump (in and out). In the winter they circulate hot water, in the summer they circulate cool water.
They have to make a call when to flip these, and it's outdoor temp based. It can get a bit awkward with those surprise hot or cold days.
My system is like this. It's obviously cheaper.