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Boiler Turn Down Ratio

Le John

Le John Member Posts: 241

January 2019 edited January 2019 in THE MAIN WALL

What do the turn down numbers represent on a 90,000 BTU Combi Boiler? 3.8:1 / 1.2:1

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Comments

Brewbeer Member Posts: 616

January 2019 edited January 2019

A 3.8:1 ratio is 26% (1 divided by 3.8). 26% of 90,000 BTUs is 23,684 BTUs.

Hydronics inspired homeowner with self-designed high efficiency low temperature baseboard system and professionally installed mod-con boiler with indirect DHW. My system design thread: http://forum.heatinghelp.com/discussion/154385
System Photo: https://us.v-cdn.net/5021738/uploads/FileUpload/79/451e1f19a1e5b345e0951fbe1ff6ca.jpg
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Le John Member Posts: 241

January 2019

Thank you @Brewbeer

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