Help With 2 Zone Electic Heat Pump - HVAC - DIY Chatroom Home Improvement Forum

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Old 12-07-2009, 05:39 AM   #1
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help with 2 zone electic heat pump

2 zone electric heat pump, when zone 1 is on by itself all is good, when zone 2 is on by itself all is good, when both zones are on at the same time zone 1 air flow is good, zone 2 is really weak with air flow.

In the basement there is this duct work that loops around at the furnace with a weighted handle on it, does this control the amount of air that would flow to both zones when both are calling for heat/air?

or what else could be the cause?

Thanks in advance


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Old 12-07-2009, 06:19 AM   #2
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That is the bypass. Its need for when only one zone is calling.
Generally, it should be closed when both zones are calling.


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