Turndown Ratios may have two different meanings to engineers designing a hydronic heating system for building or process systems. The normal turndown is defined as …
Condensing Boiler Efficiency and Your Boiler Schedule
The marketing directive is clear in the hydronic condensing boiler world. Make sure you highlight high efficiency in every boiler advertisement and bulletin. So before …
Condensing Boiler Staging & Dual Return for Higher Efficiency (Part 4 of 4)
An engineer uses larger temperature differences and deep reset when designing a condensing hydronic heating system. The design may utilize staging of multiple boilers in …
What is the Efficiency of my Installed Condensing Boiler? (Part 1 of 4)
This is part one of a four article series on Condensing Heating System Efficiency. Each week we will discuss maximizing efficiency not through product selection, …
Primary – Secondary Piping and Water Tube Boiler Cycling
Primary – Secondary piping is recommended with most water tube condensing boilers. Once the boilers have turned down to the lowest firing rate, cycling will …
Turndown Ratio in Condensing Water Tube vs. Fire Tube Boilers (Part 2 of 2)
Turndown was defined in Part 1 of this short series. In general, hydronic water tube boilers have a lower possible turndown ratio than fire tube …
‘Tis the Season for Condensing Boilers
We’re taking a one-week pause in our humidification series to mention condensing boilers. A physical plant operator for a school district recently called and asked …
What is the efficiency of my installed condensing boiler or water heater?
If you answered 97%, you’re not alone. You’re most likely not right, but you’re not alone. Many boiler manufacturers have jumped into the world of …