ATTENTION CONSULTING ENGINEERS &

COMMERCIAL CONTRACTORS

CLASSES OFFERED

Date: February 7, 2025

Time: 12 PM – 1 PM

Location: Virtual

PDH: 1.0 PDH

Trainer: Robert Barrett 

This presentation looks at the efficiency curves of condensing boilers and compares these curves to NYC weather bin data to determine the efficiency of a condensing boiler over a heating season when it is designed for non-condensing design temperatures of 180F-160F. 

Boiler outside air reset control savings are compared to pump VFD savings; control options are discussed. Also, water heater piping design is demonstrated to have a large impact on domestic hot water heater efficiency. Some Lochinvar products are discussed along the way. 

Takeaway:



• Understand what causes a boiler to condense and how to optimize this
• Detailed review of condensing boiler efficiency curves as they relate to boiler LWT-reset and NYC weather data
• Compare the savings associated with boiler LWT reset versus the savings associated with constant LWT and variable speed pumping. 
• Discover how to make every DHW application operate in condensing mode
• Understand the benefits of applying a front-end loading concept (hybrid boiler plant design) to a retrofit application 

Who should attend: HVAC & Plumbing design engineers



1.0-PDH            Duration: 1-hour                PS#20207027

Date: February 14, 2025

Time: 12 pm – 1 pm

Location: Virtual

PDH: 1.0 PDH

Trainer: Chris Abbott

This presentation provides a history of balancing, discussing fundamentals such as Cv value, what it is, and why it is important.  Examples of unbalanced circuits and resulting overflows are shown.  Pressure independent balancing is explained and current PICV technology is reviewed discussing the many benefits offered by these improved devices.  Traditional VFD operation is explained and the newer “sensorless” VFD technology is discussed and demystified.  

Takeaway:

• Learn about the evolution of balancing valves
• Understand why balancing is important and how it is accomplished in the field. 
• Be comfortable using Cv values to determine pressure losses at alternate flows
• Learn about the newest balancing technology
• Introduction of “sensorless” VFD technology that uses software and motor current sensing technology to eliminate the need for a remote pressure differential sensor to control the VFD

Who should attend: HVAC & plumbing design engineers



PDH-1.0            Duration: 1 hour           PS#-202310178

Date: February 21, 2025

Time: 12 pm – 1 pm

Location: Virtual

PDH: 1.0 PDH

Trainer: Robert Barrett 

This presentation looks at how power is produced at the plant level, the mix of fossil fuel and non-fossil fuel-based energy within our energy grid. “Point-of-Use” efficiency of electric appliances. The COP requirements of heat pumps are required to be at parity with condensing gas-fired units. Why “electrification” is a “green” technology, even with the current fossil fuel mix, the costs for fully electric systems versus conventional systems, and why hybrid systems make sense ecologically and financially. 

Who should attend – HVAC & Plumbing engineers



1.0-PDH            Duration:  1-hour                PS#202411038

Date: March 7, 2025

Time: 12 pm – 1 pm

Location: Virtual

PDH: 1.0 PDH

Trainer: Robert Barrett 

This presentation discusses the basics of steam systems – reviewing steam tables, latent heat, pressure and temperature relationships, etc.  One-pipe and two pipe systems are reviewed, along with different return systems.  Steam trap types are reviewed in detail.  Vacuum condensate return systems are reviewed, along with TRV devices. 

Who should attend – HVAC engineers



1.0-PDH           Duration:  1-hour                PS#20218083

Date: March 14, 2025

Time: 12 pm – 1 pm

Location: Virtual

PDH: 1.0 PDH

Trainer: Chris Abbott

• AHRI 400 definition
• Scope of AHRI 400
• AHRI certify all
• ASHRAE 90.1 
• Economizer and ASHRAE 90.1
• State adopted ASHRAE 90.1
• US Climate zone
• Sample of economizer

Who should attend – Plumbing & HVAC engineers



1.0-PDH          Duration:  1-hour     PS#20170566

Date: March 21, 2025

Time: 12 pm – 1 pm

Location: Virtual

PDH: 1.0 PDH

Trainer: Robert Barrett 

• What makes CO2 refrigerant attractive?
• How does CO2 compare to R-454B
• Temperature Considerations: Lime, Health, Safety
• Operating Delta-T and Energy Balance
• Operating Profiles
• Operating Delta-T & ASHP schematic designs
• CO2
• R-454B
• Equipment Efficiency: CO2 v R-454B 
• System Efficiency
• CO2 + Recirc
• R-454B
• Lifetime Global Warming Potential 

Who should attend – HVAC & Plumbing design engineers



PDH – 1.0         Duration:  1-hour    PS#202411826

For over 100 years Wallace Eannace has served as advisor, technical support, and partner to firms engaged in the plumbing and HVAC industries. As a leading expert in heating and cooling solutions, Wallace Eannace utilizes its training, education, and best-in-class products to ensure systems perform as expected and to maximum life.