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by National Comfort Institute, Inc.
Measuring wetbulb temperatures on a cooling system under a low or no load situation is a whole new ballgame. What happens is that a system operating in cool weather in a building with no load on it generates extremely rapid temperature changes. If you take the...
by National Comfort Institute, Inc.
Include the ducts in your service agreements by adding static pressure testing. This test adds a new dimension to service by including the entire system, not just the equipment. It provides better service to your customers, more opportunity to increase system...
by National Comfort Institute, Inc.
What's a CIM? Hint: CFM = Area x Velocity. CIM is Cubic Inches per Minute. Typically, it's a huge number that you get when traversing a duct and calculating CFM, but you forget to divide the area of the duct by 144 to convert square inches to square feet. To save you...
by David Holt
Community Focus Creates Awesome Opportunities by David Holt, NCI Director Sales & Service Leadership How many times have you had a young baseball player come to your shop asking for donations to help support their team as they travel to a tournament? If you're...
by Jim Davis
When an Induced Draft Appliance (Furnace, Boiler or Water Heater) is "Common Vented" with a Natural Draft Appliance, venting interference can occur. This following procedure outlines the proper method to test and evaluate this situation and helps ensure all...
by Michael Weil
Vendor Spotlight, Commercials on Hold
by Jim Davis
Commercial burners may appear to be intimidating and you might feel they're too big to for you to work on. But when you gather the nerve to get your hands on one you'll find they are not that complicated and are quite simple to combustion test and adjust. Commercial...
by Jim Davis
Those who have implemented Combustion Diagnostics in their service agreements know that technology has given us the ability to uncover mechanical deficiencies with fuel burning appliances like never before. Combustion analysis helps us detect improper fuel input,...
by Jim Davis
According to NCI's Protocol, rising CO readings indicate combustion air or venting problems. In either case, flue gases are spilling into the space, requiring immediate attention. By measuring draft you can differentiate between venting and combustion air problems....
by Jim Davis
Combustion Air - a Grimm Fairy Tale by Jim Davis When it comes to combustion air, safety truths created by someone's imagination -- based on little or no factual data whatsoever -- nothing but fairy tales. This article not only addresses the need to provide combustion...
