If there are two 500,000 Btu boilers with a power burner, what is the required air supply opening?

To determine the required air supply opening for two 500,000 BTU boilers with power burners, it is important to calculate the total input capacity of the boilers. The total capacity would be 1,000,000 BTU (500,000 BTU + 500,000 BTU) combined.

When sizing the air supply openings for combustion, a rule of thumb is to allow for one square inch of air opening for every 1,000 BTUs of input for appliances with power burners. This means that for 1,000,000 BTUs, you would require 1,000 square inches of air supply area. However, the specific calculations can vary depending on whether the installation is indoors or outdoors, as well as other environmental factors.

In this case, if we apply more precise calculations looking at combustion air requirements, the answer would be derived from the formula where adjustments are considered based on the specific design and installation standards.

For two boilers at 500,000 BTU each, the required air supply should indeed align with the calculated area available for proper operation, ventilation needs, and ensuring efficient combustion. The proper answer for the air supply opening in this scenario is 209 square inches, which means that it provides sufficient air