Common Sense Safety HVAC Codes - Some HVAC Installation technicians take pride in their work and make any installation job they perform look like a work of art. There are others who don’t care and want to install the unit as quickly as possible and move on down the road to the next job so they can do the same.
It really does not take much more time to do things right in the first place including reading the instruction manual that comes with every new condenser or air handler (actually all new HVAC equipment comes with instructions for installation). (more…)
Watts Backflow Preventers | Water Safety - Backflow preventers are necessary on water loops where the water is used in a hydronic loop that heats or cools the water through a boiler or chiller system. This Watts backflow preventer is installed on a large boiler system that heats thousands of gallons of water. The hydronic loops are designed to be hermetic. However, there is always some loss of water somewhere in the system.
For safety purposes to prevent the boiler from losing all of its water, a make-up water loop is connected to the loop. The make-up water feed needs backflow preventers installed in the pipe to prevent any of the boiler or chilled water from getting back to a domestic water feed for the make-up water. (more…)
HVAC Tip - Did you know the human body produces approximately 250 BTU/h when sleeping? Here is a basic list of the approximate BTU/h produced by the human body for various activities:
Watching Television - 400 BTU/h (any sedentary activity)
Cleaning the house - 700 BTU/h (moderate activity)
Mowing the Grass w/push mower - 1800 BTU/h (heavy activity)
Running a marathon - 2400 BTU/h (extreme activity)
The number of people occupying a dwelling or space is a consideration in the load calculation for sizing air conditioning systems simply because humans do give off heat. BTW, the Matrix over blew the numbers. In the movie Morpheus states humans give off over 25,000 BTU's. Only the author of this website is that hot..............))))))
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