Chilled water condensers are normally operated as constant-flow devices and the pumps serving them are constant-speed. Why would you ever use a variable-speed drive for …
Parallel Pumping in Condenser Applications: Limiting the Flow Rate (Part 2)
In part 1 of this series we offered an example condenser water pumping system. The design of this example is 800 GPM per condenser for a …
Parallel Pumping in Condenser Applications (Part 1)
Applying a single constant-speed pump for each condenser in a chilled water application is a normal design for the HVAC engineer. The chiller manufacturers suggest …
Hydronic Pump Piping and Trim: Vibration Inertia Bases
Oftentimes an engineer will specify a pump mounted on springs, vibration base, inertia base, or isolation base. Our industry tends to use a number of terms for the same …
Hydronic System Centrifugal Pump Trim: Flexible Connectors
Centrifugal pumps in hydronic systems normally have flexible connectors on the inlet and outlet piping at the pump. Why are they there? Do we need …
Using ECM Smart Circulator Pumps in Primary Pump Applications in Hydronic Systems
Last week I featured the ECM High-Efficiency Smart Circulator Pump used in a secondary application. This week the R.L. Deppmann Monday Morning Minutes continues to …
Using ECM Smart Pumps in Secondary Hydronic Systems
ECM (Electronically Commutated Motor) pumps have electronics built into them which may be used to vary the speed of the pump. If the pump manufacturer …
Smart ECM Pump Applications – Variable Speed Heating & Cooling System
ECM (Electronically Commutated Motor) pumps have electronics built into them which may be used to vary the speed of the pump. If the pump manufacturer …
How Can an ECM Smart Pump Save Energy?
Pumps with ECM or Electronically Commutated Motors have the ability to vary the speed of the pump built into the motor. Can you control the …
Create a New Variable Speed Pump Control Curve after Hydronic Balancing
This week, the R. L. Deppmann Monday Morning Minutes will explain how to show multiple speeds on a pump curve and how to determine what …