Air Source Heat Pump Piping and Control
2026-08-21 12:00 - 13:00 (America/New_York)
This presentation covers:

Background of the history and future of Decarbonation of NYC
Understand LL-97 and compare with heat pumps
Consider various piping systems utilized for ASHP

Understanding hydronic system balancing and flow control utilizing
Manual balancing
Flow limiting valve
Pressure independent
Advantages and disadvantages
Recommendations
Understand LL-97 and compare the economics of operating high efficiency gas fired equipment with heat pumps

Who should attend – HVAC engineers

1.0-PDH Duration: 1-hour PS#202614180

Managing Legionella with Thermal Design (1 PDH)
2026-09-04 12:00 - 13:00
This educational program on managing Legionella focuses on domestic hot water (DHW) recirculation systems, thermal disinfection strategies, and digital mixing valve technology. It is featured in technical seminars and event sessions like the Coffee with Caleffi educational series.

Course Topics and Learning Objectives

Pathogen Basics: Understanding Legionella bacteria origins, growth danger zones (80°F to 110°F), and health impacts like Legionnaires’ disease.
System Design & Mitigation: Eliminating pipe stagnation and dead legs via proper hot water recirculation and flow balancing
Thermal Disinfection Mechanics: Raising system temperatures (typically 140°F to 160°F) for specific time durations to safely kill bacteria during low-use hours.
Hardware Requirements: Evaluating master mixing valves, comparing electronic versus thermostatic controls, and utilizing components like the LEGIOMIX® digital mixing valve.
Safety and Anti-Scald Protection: Deploying ASSE 1070 point-of-use mixing valves to protect end users from high-temperature thermal spikes.

Who should attend – HVAC engineers

1.0-PDH Duration: 1-hour PS# TBA

Domestic Hot Water Theory vs Reality
2026-10-02 12:00 - 13:00
This presentation covers:

Applicable Code and Standard
Calculation domestic hot water loads
Load profile
ASHRAE Methodology
DHW case study
DHW reality compare to theoretical load
Energy metering service
Enhance DHW system

Who should attend – HVAC engineers
1.0-PDH Duration: 1-hour PS#202512730
