One of our many new employees asked a valid question about cast iron condensate unit pump construction. The employee has worked in the HVAC plumbing …
Boiler Feed Unit: Pump Minimum Flow
Maintaining the required minimum flow in centrifugal pumps is key to trouble free expectations and long life. In boiler feed applications, this minimum flow is …
Boiler Feed Unit Pump Control is All About the Number of Pumps and Boilers
When selecting and specifying a steam boiler feed unit or deaerator, the engineer must pay attention to the controls. Level controls at the boilers must …
Vented Boiler Feed Units & Pressurized Deaerator Boiler Feed Units, What is the Difference?
Some systems have deaerator boiler feed systems, and some have vented boiler feed systems. What is the difference between them? When should I use one …
What is a Steam Boiler Feed Unit and How is the Receiver Sized?
Once again, our industry tends to be clear when something is named. Just reverse the two words. Boiler feed units simply “feed the boiler.” The …
What Is A Steam Condensate Return Unit And How Is It Sized?
We normally do not use steam for comfort heating when designing a system today. Other than old steam heating systems, we use steam for building …
Condensate Pump Discharge Balance Valves: A New Perspective
The last R L Deppmann Monday Morning Minutes (MMM) focused on the critical relationship between the steam condensate return temperature and proper pump NPSH required …
Can I change my Vacuum Condensate Pump to a Simple condensate Pump? (Part 3)
When you use the word vacuum with most people, they think of sucking something up like a vacuum cleaner does. There are times that vacuum condensate systems were used to lift or “suck up” the condensate from a lower level. Today, we will examine the use of vacuum condensate pumps to lift condensate from a low return.
Can I change my Vacuum Condensate Pump to a Simple condensate Pump? (Part 2)
We began a series about vacuum condensate units and introduced one of their uses: the reduction of time to bring a building up to temperature …
Can I Change My Vacuum Condensate Pump to a Simple Condensate Pump? (Part 1)
Every heating season we get, at least, a half dozen calls with the question above, which is the subject of today’s R. L. Deppmann Monday Morning Minute. Vacuum condensate transfer pumps exist in many older steam heating systems. There were many reasons contractors and engineers used these pumps but most of the systems fall into three categories: time control, temperature control, and condensate lift.