we have a 2 stage heat pump with hot water back up.
with two or three zones.
If set 50% rule how does the second and third stage cut in if only one zone is calling.
as in y1 - y2 - w
Herb
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- Thu Jun 04, 2015 8:27 am
- Forum: Help and Advice
- Topic: 2 stage heat pump with hot water coil
- Replies: 1
- Views: 7618