Someday, there will be a mobile app that can provide a warning when your domestic water and/or residential heating pumps stop working. For smaller gallon …
Boiler Safety: CSD-1 Emergency Shut-off Switches
The ASME CSD-1 Controls and Safety Devices for Automatically Fired Boilers is a standard for many State codes including Michigan and Ohio. This standard exists …
Variable Speed Chilled Water Systems: Demand Reset
There are multiple methods to vary pump speed in HVAC chilled water systems. A common method is the use of a differential pressure transmitter at …
Shell & Tube Heat Exchanger – Leaking Gaskets
Shell and tube heat exchanger leaks can be very frustrating. Occasionally we receive a call from a frustrated contractor who swears he installed the heat …
Commercial Electric Humidifiers: Immersed Electrode Conductive Vs. Resistive Humidifiers (Part 2)
Part 1 of this series described the difference between electrode conductive electric humidifiers and resistive electric humidifiers. The article ended by showing a significant cost …
Commercial Electric Humidifiers: Which Style Should I Choose? (Part 1)
Proper humidification in buildings is critical in the fight to reduce the spread of air-borne viruses. We have known this for years, but the pandemic …
Domestic Water Recirculation Codes: Here is What We Heard
In the 04-05-2021 Monday Morning Minutes, we asked for your opinion on the length of the domestic water recirculation line from source to fixture. Here …
Cooling Tower Spring Startup Tips
The weather is warming, and our attention turns away from heating and toward system air conditioning. To protect the cooling tower pumps, we offer a …
Tis’ the Season to Start Your Air-Cooled Chillers
Many air-cooled chillers do not have glycol and are drained for the winter season. Most cooling towers are also drained for our cold winter months. …
Domestic Water Recirculation Codes: What Is Your Opinion?
I recently received an email from an engineer discussing the type and location of balance valves in a domestic hot water recirculation system. He brought …