Carbon Monoxide, Combustion Safety, Diagnostic, HVAC Service, Installations, NCI Article Library, Testing and Balancing
Adjusting a Ball Valve on Intake of 90% Appliances by Jim Davis, NCI Senior Instructor In our combustion diagnostics class, we discuss short flues on condensing equipment as causing possible venting problems. We recommend adding a plastic ball valve to the intake of...
Measurement, NCI Article Library, Testing and Balancing
The primary challenge in effectively measuring humidity is accuracy. The two major elements affecting accuracy are the reliability of your test instrument and the measurement technique that you use. Choose a good quality instrument. Many low cost instruments are...
Heating, Home and Building Performance, Measurement, NCI Article Library, Performance-Based HVAC, Testing and Balancing
HSER™ Season is Upon Us by Rob "Doc" Falke In May of 2004 we released the CSER ™ and HSER ™ procedures to NCI Members. With the success many members have enjoyed with CSER this summer, several members requested that we address HSER again this fall with additional...
Carbon Monoxide, Combustion Safety, HVAC Service, NCI Article Library, Safety
Last month we brought you a red tag label that you can attach to an appliance when you disable it due to a safety hazard. This month we bring you its cousin, a yellow tag that is to be attached to equipment when you have made modifications or repairs to improve the...
NCI Article Library, Static Pressure Testing
How to Use Static Pressure Budgets by Rob "Doc" Falke, NCI President Static pressure budgets were originally developed to help new air diagnostic technicians interpret static pressure readings. These budgets provide a set of rules to compare pressure readings so they...