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What does turning on summer mode on NTI combi actually do

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harry_fine
harry_fine Member Posts: 9
in Gas Heating
I noticed on my NTI FTV110C on the companion app and I assume in the menu settings, I can put the combi boiler into summer mode. What does that actually do, any downsides?

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  • Big Ed_4
    Big Ed_4 Member Posts: 2,785
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    I would assume it will shut off the Heat but keep on the Hot Water ....

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  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,013
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    Just guessing, it probably turns off heating mode and works only in domestic hot water mode. It prevents the boiler and pumps from turning on even when a thermostat calls for heat. 
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab

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