Quote:
Originally Posted by mechanic
Well that's how it thought they were supposed to work, use the waste heat when in cooling mode.... Mine does nothing in cooling mode though, only works in heating mode. It's a climate master tranquility series.
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A desuperheater is plumbed into the refrigerant circuit immediately following the compressor. If it is a reversing unit, the dsh is between the compressor discharge and the reversing valve. It does its job whether heating or cooling. As long as the compressor is running, the thing will heat water.
The main difference between heating and cooling mode is system pressure. Most hydronic units do not heat the indoor loop up to dhw temperature. Since longer run times at lower loop temps are more energy efficient, that's how they are set up. At this lower loop temp, the high side pressure can only provide "warm bath" temp. The desuperheater runs somewhat hotter than the main hx, but it won't scald you.