We recently received an inquiry from an engineering firm deciding whether to change their pump schedule. They currently select the pumps at design capacity and …
Permanent Magnet (PMAC) Motors & Electrically Commutated (ECM) Motors in Hydronic Systems (Part 3 of 3)
You understand the differences between premium efficiency (IE3) motors and PMAC or ECM motors (IE4&5). You understand the cost implications of both styles of motors. …
Permanent Magnet (PMAC) Motors & Electronically Commutated (ECM) Motors in Hydronic Systems (Part 2 of 3)
Can I and should I specify permanent magnet motors (PMAC) on my hydronic system pumps? The last R. L. Deppmann Monday Morning Minutes showed the …
Permanent Magnet (PMAC) Motors & Electronically Commutated (ECM) Motors in Hydronic Systems (Part 1)
Hydronic system pumps and other HVAC and plumbing equipment will often have a variety of motor choices to specify. One of the newer additions to …
Condensing Boiler Venting Material (Part 2)
Proper venting of hydronic condensing boilers is critical for the safety of occupants and the successful operation of the heating plant. Part one of this two-part series …
Condensing Boiler Venting Material (Part 1)
Proper venting of hydronic condensing boilers is critical for the safety of occupants and the successful operation of the heating plant. The materials that may …
The Importance of Turndown Ratio in Condensing Boilers & Water Heaters
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 …
Commercial Gas Fired Water Heaters – Cost of Ownership
When you’re researching water heaters, you first ensure that the product meets your needs technically (flow, heat input or source, space requirements, and recovery …
Commercial Gas Fired Water Heaters – The Battle of Efficiency Between Tankless & Storage
Tankless, sometimes called instantaneous, and storage water heaters have been utilized in commercial and institutional buildings for a long time. The overwhelming majority of these …
Commercial Gas Fired Water Heaters – Materials of Construction
Gas fired commercial water heaters come in a variety of materials of construction. Most available offerings fall into three categories. What are these materials and …