In addition to pumping setup, the following top 10 design items should be considered when designing condensing boiler systems. 1. Cost impacts: A condensing boiler has a more expensive initial cost than an equally sized noncondensing boiler. To gain the efficiency benefits, the system must be designed for condensing temperatures. 2. Boiler controls: Purchase and install a boiler management system dedicated to control the boilers to optimize the boiler system efficiency. Running more boilers at lower loads provides better efficiency for condensing boilers.
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