Date: March 21, 2025 Time: 9 am – 12 pm  Agenda: Proper sizing High Volume with quick circulation Standard efficiency vs high-efficiency Water Quality | Limescale, calcite solutions Piping and new ideas with reverse indirects, Plate & Frame HX, and multiple units Domestic water recirc pumps with aquastats and timers Live Fire indirect with boiler […]

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 […]

Date: June 6, 2025 Time: 12 pm – 1 pm Location: Virtual PDH: 1.0 Trainer: Robert Barrett    This presentation provides an overview of real world DHW data for high-rise multi-family housing in NYC and compares the real world data to ASHRAE predictions. Detailed load provides are presented, review of peak-hour and non-peak hours considerations […]

Date: June 20, 2025 Time: 12 pm – 1 pm Location: Virtual PDH: 1.0 Trainer: Robert Barrett  This presentation covers the fundamentals of heat transfer, dissecting each variable. It covers fixture accounting, occupancy assumptions, fixture schedules, DHW percentages and cold-water requirements, fixture units, diversity factors, and high level assumptions. Take-away: Learn to be comfortable with […]

Date: July 18, 2025 Time: 12 pm – 1 pm Location: Virtual PDH: 1.0 Trainer: Chris Abbott   -Pumps -System curve -Head overestimation impact -Minimum flow -Expansion tank -Expansion tank types -System pressure -Tank location -Plate and frame heat exchangers -Fouling factor and excess surface area -Balancing -Why balancing -Direct and reverse return system -Impact […]