Design, Operation and Maintenance of HVAC Systems

Sep 10, 2019 - Sep 13, 2019

Caraquet, NB


Cost is $2000 which includes lunch. Contact Jocelyn Larocque, P.Eng., ing, CEM to register at  


Design, Operation and Maintenance of HVAC Systems

After participating in this course, you will be able to:

  • Apply and use psychrometry to understand the design and operation of various HVAC systems
  • Recognize and understand the operation of a wide range of HVAC systems
  • Select and identify the most suitable HVAC system for various practical applications
  • Develop an outline of a complete HVAC system
  • Prepare a preventative and regular maintenance program for HVAC systems


The design, operation, maintenance and troubleshooting of a wide range of HVAC systems will be covered. This course starts with a quick review of psychrometry and representation and air conditioning processes on the psychrometric chart. This is followed by a detailed discussion of the basic subsystems of any HVAC system, comprehensive coverage of various systems, and guidelines for selecting the most suitable HVAC system for various applications. Finally, a discussion of the operation and maintenance of various subsystems and components is presented, followed by an outline of the measurements and instrumentation used in HVAC system troubleshooting.

Course Outline:

  • Psychrometry
  • Subsystems for HVAC systems
  • Single- & multiple-zone systems
  • Selection of HVAC systems
  • HVAC equipment selection & rating tables
  • Air subsystem components
  • Air cleaning equipment & air ducts
  • Indoor air quality: operation & maintenance
  • Troubleshooting
  • Workshop

Who Should Attend
Design & Project Engineers • Plant & Facility Managers/Engineers • Consultants • Mechanical Engineers • Maintenance & Operations personnel • Technicians & Technologists • Contractors • Building Inspectors • Site Foremen



Day I


  • The meaning of air conditioning
  • Comfort conditions
  • Codes and standards
  • Rules of thumb (cooling/heating load and ventilation)


  • Moist-air properties
  • The Psychrometric chart
  • Moist air processes

Basic Subsystems of any HVAC System

  • Air subsystem
  • Chilled/hot-water subsystem
  • Refrigeration subsystem
  • Heat-rejection subsystem
  • Control subsystem

Types of HVAC Systems - Single-zone systems

  • Packaged terminal air conditioner
  • Packaged DX rooftop unit
  • Split DX system
  • Chilled-water terminal system
  • Dedicated outdoor-air system
  • Water-source heat pump
  • Ground-source heat-pump
  • Variable-air-volume (VAV) system

Day II

Types of HVAC Systems - Multiple-Zone Systems

  • Multizone air handing unit (AHU)
  • Changeover-bypass system
  • DX rooftop variable-air-volume (VAV) system
  • Packaged self-contained VAV system
  • Central chilled-water VAV system
  • Two-fan, dual-duct VAV system
  • Dual-duct VAV system

Selection of HVAC Systems for Various Applications

  • Factors that affect selection of HVAC system
  • Selection map of HVAC systems for: single-purpose occupancies (e.g., residential, restaurants, shops, clubs, theaters, etc.) and multi-purpose occupancies (e.g., offices, hotels, moles, museums, libraries, department stores, labs, etc.)

HVAC Equipment Selection and Rating Tables

  • Packaged DX units
  • Air Handling Units (AHU)
  • Air-cooled water chillers
  • Water-cooled water chillers


Workshop: Participants will design an HVAC System for a building under the instructor

Operation and Maintenance of Air Subsystem Components


  • Functions and types of fans
  • Fan selection
  • Fan noise - estimated fan sound power level
  • Eliminating fan-noise problems
  • Periodic inspection
  • Fan troubles and the possible causes


  • Types of coils
  • Coil accessories
  • Condensate control
  • Freeze-up protection
  • Tightness and cleaning

Air Cleaning Equipment

  • Classification of air filters
  • Electronic air cleaners
  • Activated carbon adsorbers
  • Selection of air filters

Day IV

Air Ducts

  • Air leakage
  • Fire protection
  • Duct liner and duct cleaning
  • Sound attenuation in ducts
  • Silencers

Operation and Maintenance to Guarantee Indoor Air Quality (IAQ)

  • Inspection, service, and access
  • Monitoring of operating conditions in air systems
  • Coils and ductwork
  • Space pressurization control
  • Minimum Ventilation Control
  • CO2-based demand-controlled ventilation

Operation and Maintenance of Refrigeration Subsystem Components

  • Compressors
  • Main problems in direct-expansion reciprocating systems
  • Parameters that influence the performance of Shell-and-Tube water–cooled condensers
  • Air-cooled condensers: clearance, warm air recirculation, dirt clogging, and low-ambient air control
  • Factors that affect cooling tower performance
  • Operating considerations for cooling towers
  • Maintenance of cooling towers

Troubleshooting of HVAC Systems

  • Measurements
  • Instrumentation

2.8 CEUs/28 PDHs


Mohamed Hamed 

Dr. Mohamed S. Hamed, P.Eng., is a Full Professor at the Department of Mechanical Engineering and the founding director of the Thermal Processing Laboratory (TPL) at McMaster University.

Dr. Hamed has more than 30 years of industrial experience in the field of thermal engineering, five years of which as Director of Research and Product Development in Canada. Dr. Hamed has developed and presented numerous training courses and seminars in the field of HVAC and Refrigeration Systems, Renewable Energy Systems, Energy Conservation and Management, Boiling Heat Transfer, and Two-phase Flows. He has served as a consultant in many projects in Canada and abroad.

Dr. Hamed is a registered Professional Engineer in the Province of Ontario and a member of various professional associations such as ASHRAE, ASM International, TMS, CSME, CFD Society of Canada, ASME, and a senior member of SME. He is also an editorial board member of the Transactions of the CSME, the International Journal of Microstructure and Materials Properties (IJMMP), and the International Journal of Computational Thermal Sciences.