-Dan Wallace, PE 1. Make sure tubing is pitched downward to avoid condensation in the impulse lines. Liquid in the impulse lines can cause incorrect draft measurements and have adverse effects on fired equipment operation. 2. If the draft pressure sensor is located below the sensing point, ensure there is an adequate drip leg to collect condensation. 3. […]
NYC Local Law 87 Compliant Draft Control Strategy
Joe Wallace The induced draft (ID) fans at many NYC Department of Education schools are grossly over sized, causing problems including noncompliance with local regulations. These old boilers are not equipped with forced draft fans and rely on these induced draft fans, installed on the flue of the boiler, to create draft. Typically, these ID fans run at full […]
Combustion Tuning a Parallel Positioning System
-Dan Wallace, PE Follow these best practices to tune a Natural Gas burner. 1. Check the burner nameplate for the required gas pressure at the manifold at high fire. 2. Check the burner nameplate for the required supply pressure. 3. Light the burner off, and adjust the main gas pressure regulator until the desired supply pressure is obtained. […]