Join Date: Feb 2010
Location: Narragansett Bay
Thanked 327 Times in 307 Posts
Rep Power: 8
Re: Heat Help
The operating limit for incoming water temperature on my unit in heating mode is 40 -77 degs F. Outside air temp makes no difference to the unit itself.
I'm not saying it won't work at all below 50, but it does just run and run and run and puts out very weak heat. In 60+ water temps, it will cycle for a minute maybe.
The difference is most notable between early Spring and late Fall, where air temps are similarly low, but water temps are dramatically different.
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