September 19, 2024 @ 8:00 am - 4:30 pm - Johnstone South Bend
TWO PART Full Day Class on understanding how air moves through ducts and it’s improvement to the overall performance of the air distribution system.
Part 1: Ingredients
•Pretest
•What are the ingredients for a Quality HVAC installation?
•What is static Pressure and how does it relate to the size & air flow of the air distribution system? Understanding Total External Static Pressure Test (TESP). What system components use up static pressure?
•What tools are available to help the technician? Practical application & Measuring airflow to calculate accurate CFM.
•Lab measuring the actual CFM on a system. Static pressure method. Temperature rise method. Anemometer.
•Equivalent Footage: Why does using the wrong fittings slow the air? Determine better fittings for smooth airflow.
•Flexible Duct: Good or bad? Compression, support, bends.
•Understanding and using an air duct calculator.
•Lab Introduction of the duct design project on a building drawing. Supply Duct Design. Return Duct Design.
Part 2: Design
•Measuring CFM by Velocity Method with Lab exercises.
•Lab Continuation of the Duct design project from the first session. Consider duct design on longer than one hundred feet of duct or shorter duct. Friction in design. Best velocity.
•Solving Problems in existing ducts. Branch dampers
•Flexible Ductwork: Good? Bad? How do duct compression, duct support, and careful 90° bends come into play when utilizing flexible duct?
•Ovalizing Sheet Metal Ductwork. Will Oval duct conduct the same airflow as round without affecting static pressure?
•The effects of insulating or sealing your ducts.
•The effectiveness of an existing duct system. Troubleshooting duct systems. When replacing equipment, what should be considered?
•Does selection of evaporator coils on replacement equipment affect airflow?
•Post test.
Instructor: Mark Wood – Johnstone Supply Technical Trainer
Includes: Study materials, duct calculator, class instruction, breakfast & lunch. 7:30am registration & breakfast. $89pp
Class Location: Johnstone South Bend / 3220 Rosetta Place Dr / South Bend, IN 46628
This event is full.