Twinning possibility


Old 06-04-20, 05:31 PM
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Twinning possibility

I have two 21 year old Amana systems that I have put in some effort to get running well. Both air handlers are twin 80SSE's that are controlled by a pair of Ecobees.

I have tried for years, but have never been able to balance the cooling between upstairs & downstairs quite right, except at night. I want to eventually replace with 2-stages, but for now I just want to get this optimized.

Both control boards are new 50A55-843's-- and they have terminals for twinning. The manual doesn't get into detail about it, but what should happen if I connect the twin terminals together?

Ideally I would like it if either thermostat calls for cooling, then both units would turn on. I am thinking I may be able to better balance the house this way.

Would this be the case if I twinned the air handlers with a single jumper wire?

Old 06-04-20, 08:11 PM
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If you're trying to balance the temperature in two areas..... having both units coming on at the same time isn't going to help. I can't see why two thermostats wouldn't do what you need.

You'd use twinning if both units shared ductwork.

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