Boilers Part 14 – Low Water Temperature Operation

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Hi Again,

Today I’d like to discuss the advantage of low temperature operation and how it enhances your energy savings. We have discussed in previous posts that most of the time, your radiators will give you enough heat with water temperatures between 90 Deg. F. and 120 Deg. F. If you have in floor radiant heat, your water only needs to be around 90 degrees all the time. In order to extract the most heat from your gas flame and get really high efficiencies, the water entering the boiler must be as low as possible. 90 Deg. F. water will suck so much more heat out of the flame than 140 Deg. F. water. The problem with most boilers is that such low water temperatures will shock the boiler and cause it to crack and leak. Complete destruction!! The DVCB is designed for low water temperature conditions. As a matter of fact, it works best with low water temperatures since it is able to condense and extract so much more heat from your gas dollars. This compounds your savings.

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