2 stage heat pump with hot water coil

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Herb - hunterdon a/c
Posts: 1
Joined: Thu Jun 04, 2015 8:16 am

2 stage heat pump with hot water coil

Post by Herb - hunterdon a/c »

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
Paul Z.
Posts: 216
Joined: Thu Dec 08, 2011 3:05 pm

Re: 2 stage heat pump with hot water coil

Post by Paul Z. »

50% rules hold off staging until two (2) or more zone are calling together.
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