General Training Heating
OLGTH2

This online course provides a comprehensive understanding of gas heating systems including theory, components and troubleshooting. Topics covered include: combustion theory, gas furnaces, burners, controls, ignition systems, installation practices, ventilation and combustion air, and troubleshooting. This program consists of 10 modules that are sold as a complete course.

duration	cost	format	register
2 hrs per module	$200	online	Register

The most popular form of heating in North America is gas. Servicing gas heating systems requires understanding the theory of operation and how the system components function to provide safe, economical comfort heating. This online training series provides the background to understand both the theory and function of components used in gas heating systems. These modules are presented in simple language and concentrate on presenting the concepts in ways that can be easily understood by people new to the industry. After completing these modules, a student should possess the understanding of the concepts behind systems which use gas heating, the types of systems and components, and basic troubleshooting techniques. Each module is self-paced and contains a quiz and final exam for the section, each with reference to the appropriate section of the module, allowing students to evaluate their understanding of the concepts presented. To receive FAD credit you must pass the module or final exam.

Who should take this training

This course is new technicians or others in the industry who wants to better understand air conditioning theory, components and troubleshooting of HVAC systems.

Module 1 – Introduction to Gas Heating

HVAC Training Objectives

Identify the main components of all gas furnaces
Select the definition for heat
Define terms Btu, specific heat, and change of state
Describe latent heat and how it applies to the change from solid to liquid and liquid to solid
Select definitions for conduction, convection and radiant heat transfer
Define pressure and the ways that pressure influences heat flow
Name two instruments used to measure pressure in heating systems

Module 2 – Principles of Gas Combustion

HVAC Training Objectives

Name the common fuel gases, how they were formed and their chemical makeup
Define combustion and list the three conditions necessary for combustion to take place
Explain what is meant by controlled combustion
Select what is meant by burn speed, flame stability and complete combustion
Pick definitions for excess air, stoichiometric combustion and NOx
Identify the products of incomplete combustion
Identify the three types of gas furnaces and their efficiency level

Module 3 – Gas Furnaces

HVAC Training Objectives

Describe the heat exchangers used in the three types of furnaces and how they differ in achieving the efficiency levels
Identify the relationship between CFM and temperature rise
Identify the types of blowers used in furnaces and how the airflow is changed
Name the basic gas controls found on a typical furnace and their function
Name the types of ignition controls and how they work
Identify the safety controls found on a typical gas furnace and the function of each
Select from a list the operating controls used on typical gas furnaces

Module 4 – Gas Burners

HVAC Training Objectives

Name the three color zones in a burner and what is happing in each zone
Select the definition of primary air and secondary air in a burner
Name the two factors of gas combustion which affect flame stability
Name the two functions of the gas orifice and the cautions to observe when changing orifices
Explain the function of the venturi, burner head, primary air shutters and carryover ports
Name three types of pilot burners and how they function

Module 5 – Gas Controls

HVAC Training Objectives

Identify the basic components, function and principle of operation of a gas pressure regulator
Identify the main components and the operating principle of a typical automatic gas valve
Explain the term redundant as it applies to automatic combination gas valves
Explain what is meant by “pick” and “hold” coils used in automatic gas valve
Describe the steps you would take to troubleshoot a gas valve

Module 6 – Gas Ignition Systems

HVAC Training Objectives

Indicate the function of a standing pilot and name the two functional components
Explain the major steps to troubleshoot a thermocouple pilot
Explain the function and operation of a flame rectification ignition system
Explain the function and operation of a spark re-ignition system
Describe the steps to follow in troubleshooting a spark re-ignition system
Describe the operation of a glow coil re-ignition system
Explain the steps to troubleshoot a glow coil re-ignition system

Module 7 – Gas Safety & Operating Controls

HVAC Training Objectives

Identify six safety controls found on various types of gas furnaces
Explain how to check the operation of a limit switch
Identify three safety controls used in conjunction with induced draft combustion systems
Identify and explain the main differences in safety controls between natural draft and condensing furnaces
Identify six operating controls found on various gas furnaces
Identify seven situations that should be considered when locating a thermostat
Explain the function and operation of a heat anticipator in a room thermostat

Module 8 – Furnace Installation Practices

HVAC Training Objectives

State the three concepts that apply to a good furnace installation
Explain the relationship between building heating load and furnace capacity
Describe what openings need to be provided in the building for combustion air
State the factors involved in determining the size of the gas supply pipe
Describe two leak dedication methods to be used with gas pipe
State how minimum clearances impact location of a gas furnace
State the startup steps to be taken with all gas furnaces

Module 9 – Ventilation & Combustion Air

HVAC Training Objectives

Explain the differences between a condensing furnace vent system and a natural-draft vent system
Explain why a vent must be large enough for a furnace and what factors must be considered in selecting the proper vent size diameter
State the characteristics of a vent that are needed for best performance
Define the term common vent and state the five design rules
Be able to select a vent pipe diameter from the vent pipe sizing tables given the furnace input, the vertical height, and the lateral length of the vent
Explain the requirements of a Category IV venting system

Module 10 – Gas Troubleshooting

HVAC Training Objectives

Use a gas orifice calculator to determine the proper manifold pressure for a given furnace, orifice and gas
Describe how to clock a gas meter
Explain how to measure temperature rise and how to use it to calculate the CFM of air being circulated
Define what is meant by lifting flames, what causes it and how to correct it
Identify two methods that can be used to determine if a heat exchanger is cracked
Define what is meant by delayed ignition, what causes it and how it can be corrected
Explain flame rollout, what causes it and how it can be corrected

Learning Methods Used

This course is a narrated online PowerPoint lecture with animations. Student’s achievement of the learning objectives is determined by successful completion of the module skill check and / or final online exam.

Module 1 – Introduction to Gas Heating

Course Overview

This first module introduces students to four of eight foundation blocks of heating: 1) Heat; 2) Molecules, Heat and Temperature; 3) Heat Transfer; 4) Pressure.

HVAC Training Objectives

Identify the main components of all gas furnaces
Select the definition for heat
Define terms Btu, specific heat, and change of state
Describe latent heat and how it applies to the change from solid to liquid and liquid to solid
Select definitions for conduction, convection and radiant heat transfer
Define pressure and the ways that pressure influences heat flow
Name two instruments used to measure pressure in heating systems

Topics Covered*

Heat (9)
Molecules, Heat and Temperature (14)
Heat transfer (20)
Pressure (20)

*All times are approximate and shown as (time in minutes).

Module 2 – Principles of Gas Combustion

Course Overview

This second module introduces the remaining four foundation blocks of heating: 5) Gas Properties; 6) Combustion Theory; 7) Practical Combustion; and 8) Efficiency.

HVAC Training Objectives

Name the common fuel gases, how they were formed and their chemical makeup
Define combustion and list the three conditions necessary for combustion to take place
Explain what is meant by controlled combustion
Select what is meant by burn speed, flame stability and complete combustion
Pick definitions for excess air, stoichiometric combustion and NOx
Identify the products of incomplete combustion
Identify the three types of gas furnaces and their efficiency level

Topics Covered*

Gas Properties (20)
Combustion theory (20)
Practical Combustion (10)
Heating efficiency (18)

*All times are approximate and shown as (time in minutes).

Module 3 – Gas Furnaces

Course Overview

In this module students learn basic furnace design, gas system components, furnace controls, and system controls and components.

HVAC Training Objectives

Describe the heat exchangers used in the three types of furnaces and how they differ in achieving the efficiency levels
Identify the relationship between CFM and temperature rise
Identify the types of blowers used in furnaces and how the airflow is changed
Name the basic gas controls found on a typical furnace and their function
Name the types of ignition controls and how they work
Identify the safety controls found on a typical gas furnace and the function of each
Select from a list the operating controls used on typical gas furnaces

Topics Covered*

Furnace design (47)
Gas system components (30)
System controls and components (10)

*All times are approximate and shown as (time in minutes).

Module 4 – Gas Burners

Course Overview

Module 4 expands on basic concepts from the first three modules and includes: theoretical flame characteristics; burner design; actual flame characteristics; combustion systems; and pilot burners.

HVAC Training Objectives

Name the three color zones in a burner and what is happing in each zone
Select the definition of primary air and secondary air in a burner
Name the two factors of gas combustion which affect flame stability
Name the two functions of the gas orifice and the cautions to observe when changing orifices
Explain the function of the venturi, burner head, primary air shutters and carryover ports
Name three types of pilot burners and how they function

Topics Covered*

Theoretical flame characteristics (24)
Burner design (14)
Actual flame characteristics (15)
Combustion systems (5)
Pilot burners (5)

*All times are approximate and shown as (time in minutes).

Module 5 – Gas Controls

Course Overview

This module focuses on the controlled combustion process: gas controls; manual and automatic valves; and gas regulators.

HVAC Training Objectives

Identify the basic components, function and principle of operation of a gas pressure regulator
Identify the main components and the operating principle of a typical automatic gas valve
Explain the term redundant as it applies to automatic combination gas valves
Explain what is meant by “pick” and “hold” coils used in automatic gas valve
Describe the steps you would take to troubleshoot a gas valve

Topics Covered*

Pressure regulators (15)
Gas valves (16)
Combination gas valves (14)
Troubleshooting gas valves (6)

*All times are approximate and shown as (time in minutes).

Module 6 – Gas Ignition Systems

Course Overview

Module 6 explains the three types of ignition systems commonly used: standing pilot; re-ignition pilot; and direct burner ignition.

HVAC Training Objectives

Indicate the function of a standing pilot and name the two functional components
Explain the major steps to troubleshoot a thermocouple pilot
Explain the function and operation of a flame rectification ignition system
Explain the function and operation of a spark re-ignition system
Describe the steps to follow in troubleshooting a spark re-ignition system
Describe the operation of a glow coil re-ignition system
Explain the steps to troubleshoot a glow coil re-ignition system

Topics Covered*

Standing pilots (17)
Pilot re-ignition systems (21)
Direct burner ignition (8)

*All times are approximate and shown as (time in minutes).

Module 7 – Gas Safety & Operating Controls

Course Overview

Module 7 covers the overall concept of the heat pump, its operation, benefits and disadvantages, operating economics, servicing concerns and how water-source heat pumps are used for heat reclaim in commercial buildings.

HVAC Training Objectives

Identify six safety controls found on various types of gas furnaces
Explain how to check the operation of a limit switch
Identify three safety controls used in conjunction with induced draft combustion systems
Identify and explain the main differences in safety controls between natural draft and condensing furnaces
Identify six operating controls found on various gas furnaces
Identify seven situations that should be considered when locating a thermostat
Explain the function and operation of a heat anticipator in a room thermostat

Topics Covered*

Safety Controls (24)
Operating Controls (16)
System controls (19)

*All times are approximate and shown as (time in minutes).

Module 8 – Furnace Installation Practices

Course Overview

In Module 8 students learn application principles: planning; designing; and selecting equipment, as well as proper gas-piping techniques and installation practices.

HVAC Training Objectives

State the three concepts that apply to a good furnace installation
Explain the relationship between building heating load and furnace capacity
Describe what openings need to be provided in the building for combustion air
State the factors involved in determining the size of the gas supply pipe
Describe two leak dedication methods to be used with gas pipe
State how minimum clearances impact location of a gas furnace
State the startup steps to be taken with all gas furnaces

Topics Covered*

Application principles (24)
Gas piping (18)
Installation principles (12)
Start-up Procedures (19)

*All times are approximate and shown as (time in minutes).

Module 9 – Ventilation & Combustion Air

Course Overview

This module introduces terminology of Category I vent design basics, vent design and combustion air, as well as Category IV venting and combustion air.

HVAC Training Objectives

Explain the differences between a condensing furnace vent system and a natural-draft vent system
Explain why a vent must be large enough for a furnace and what factors must be considered in selecting the proper vent size diameter
State the characteristics of a vent that are needed for best performance
Define the term common vent and state the five design rules
Be able to select a vent pipe diameter from the vent pipe sizing tables given the furnace input, the vertical height, and the lateral length of the vent
Explain the requirements of a Category IV venting system

Topics Covered*

Category 1 venting basics (28)
Category 2 vent design (17)
Category 1 combustion air (20)
Category IV venting and combustion (8)

*All times are approximate and shown as (time in minutes).

Module 10 – Gas Troubleshooting

Course Overview

Module 10 covers basic troubleshooting practices. Covers: basic adjustments; gas input; primary air; efficiency checks; furnace problems; how to identify and correct the operation and function of basic switches and loads.

HVAC Training Objectives

Use a gas orifice calculator to determine the proper manifold pressure for a given furnace, orifice and gas
Describe how to clock a gas meter
Explain how to measure temperature rise and how to use it to calculate the CFM of air being circulated
Define what is meant by lifting flames, what causes it and how to correct it
Identify two methods that can be used to determine if a heat exchanger is cracked
Define what is meant by delayed ignition, what causes it and how it can be corrected
Explain flame rollout, what causes it and how it can be corrected

Topics Covered*

Checking gas flow (25)
Other system checks (13)
Troubleshooting combustion (27)

*All times are approximate and shown as (time in minutes).

Completion requirements

To receive a certificate for any module or for the complete course a student must receive a grade of 70% on the module skill check or final exam. Once you complete the exam you will be able to print a certificate.

Prerequisite requirements

Basic math skills are required to calculate electrical values in skill check problems.

Suggested background

This program is appropriate for anyone interested in a better understanding of the fundamentals of air conditioning systems.

What you will receive

None.

Appropriate dress for this class

Not applicable.

Class hours

Class can be accessed 24/7 and is available immediately upon purchase.

Location

Access to the course will be provided after registration.

Course Overview

Who should take this training

This course is new technicians or others in the industry who wants to better understand air conditioning theory, components and troubleshooting of HVAC systems.

HVAC Training Objectives

Module 1 – Introduction to Gas Heating

HVAC Training Objectives

Identify the main components of all gas furnaces
Select the definition for heat
Define terms Btu, specific heat, and change of state
Describe latent heat and how it applies to the change from solid to liquid and liquid to solid
Select definitions for conduction, convection and radiant heat transfer
Define pressure and the ways that pressure influences heat flow
Name two instruments used to measure pressure in heating systems

Module 2 – Principles of Gas Combustion

HVAC Training Objectives

Name the common fuel gases, how they were formed and their chemical makeup
Define combustion and list the three conditions necessary for combustion to take place
Explain what is meant by controlled combustion
Select what is meant by burn speed, flame stability and complete combustion
Pick definitions for excess air, stoichiometric combustion and NOx
Identify the products of incomplete combustion
Identify the three types of gas furnaces and their efficiency level

Module 3 – Gas Furnaces

HVAC Training Objectives

Describe the heat exchangers used in the three types of furnaces and how they differ in achieving the efficiency levels
Identify the relationship between CFM and temperature rise
Identify the types of blowers used in furnaces and how the airflow is changed
Name the basic gas controls found on a typical furnace and their function
Name the types of ignition controls and how they work
Identify the safety controls found on a typical gas furnace and the function of each
Select from a list the operating controls used on typical gas furnaces

Module 4 – Gas Burners

HVAC Training Objectives

Name the three color zones in a burner and what is happing in each zone
Select the definition of primary air and secondary air in a burner
Name the two factors of gas combustion which affect flame stability
Name the two functions of the gas orifice and the cautions to observe when changing orifices
Explain the function of the venturi, burner head, primary air shutters and carryover ports
Name three types of pilot burners and how they function

Module 5 – Gas Controls

HVAC Training Objectives

Identify the basic components, function and principle of operation of a gas pressure regulator
Identify the main components and the operating principle of a typical automatic gas valve
Explain the term redundant as it applies to automatic combination gas valves
Explain what is meant by “pick” and “hold” coils used in automatic gas valve
Describe the steps you would take to troubleshoot a gas valve

Module 6 – Gas Ignition Systems

HVAC Training Objectives

Indicate the function of a standing pilot and name the two functional components
Explain the major steps to troubleshoot a thermocouple pilot
Explain the function and operation of a flame rectification ignition system
Explain the function and operation of a spark re-ignition system
Describe the steps to follow in troubleshooting a spark re-ignition system
Describe the operation of a glow coil re-ignition system
Explain the steps to troubleshoot a glow coil re-ignition system

Module 7 – Gas Safety & Operating Controls

HVAC Training Objectives

Identify six safety controls found on various types of gas furnaces
Explain how to check the operation of a limit switch
Identify three safety controls used in conjunction with induced draft combustion systems
Identify and explain the main differences in safety controls between natural draft and condensing furnaces
Identify six operating controls found on various gas furnaces
Identify seven situations that should be considered when locating a thermostat
Explain the function and operation of a heat anticipator in a room thermostat

Module 8 – Furnace Installation Practices

HVAC Training Objectives

State the three concepts that apply to a good furnace installation
Explain the relationship between building heating load and furnace capacity
Describe what openings need to be provided in the building for combustion air
State the factors involved in determining the size of the gas supply pipe
Describe two leak dedication methods to be used with gas pipe
State how minimum clearances impact location of a gas furnace
State the startup steps to be taken with all gas furnaces

Module 9 – Ventilation & Combustion Air

HVAC Training Objectives

Explain the differences between a condensing furnace vent system and a natural-draft vent system
Explain why a vent must be large enough for a furnace and what factors must be considered in selecting the proper vent size diameter
State the characteristics of a vent that are needed for best performance
Define the term common vent and state the five design rules
Be able to select a vent pipe diameter from the vent pipe sizing tables given the furnace input, the vertical height, and the lateral length of the vent
Explain the requirements of a Category IV venting system

Module 10 – Gas Troubleshooting

HVAC Training Objectives

Use a gas orifice calculator to determine the proper manifold pressure for a given furnace, orifice and gas
Describe how to clock a gas meter
Explain how to measure temperature rise and how to use it to calculate the CFM of air being circulated
Define what is meant by lifting flames, what causes it and how to correct it
Identify two methods that can be used to determine if a heat exchanger is cracked
Define what is meant by delayed ignition, what causes it and how it can be corrected
Explain flame rollout, what causes it and how it can be corrected

Learning Methods Used

Course Details

Module 1 – Introduction to Gas Heating

Course Overview

This first module introduces students to four of eight foundation blocks of heating: 1) Heat; 2) Molecules, Heat and Temperature; 3) Heat Transfer; 4) Pressure.

HVAC Training Objectives

Identify the main components of all gas furnaces
Select the definition for heat
Define terms Btu, specific heat, and change of state
Describe latent heat and how it applies to the change from solid to liquid and liquid to solid
Select definitions for conduction, convection and radiant heat transfer
Define pressure and the ways that pressure influences heat flow
Name two instruments used to measure pressure in heating systems

Topics Covered*

Heat (9)
Molecules, Heat and Temperature (14)
Heat transfer (20)
Pressure (20)

*All times are approximate and shown as (time in minutes).

Module 2 – Principles of Gas Combustion

Course Overview

This second module introduces the remaining four foundation blocks of heating: 5) Gas Properties; 6) Combustion Theory; 7) Practical Combustion; and 8) Efficiency.

HVAC Training Objectives

Name the common fuel gases, how they were formed and their chemical makeup
Define combustion and list the three conditions necessary for combustion to take place
Explain what is meant by controlled combustion
Select what is meant by burn speed, flame stability and complete combustion
Pick definitions for excess air, stoichiometric combustion and NOx
Identify the products of incomplete combustion
Identify the three types of gas furnaces and their efficiency level

Topics Covered*

Gas Properties (20)
Combustion theory (20)
Practical Combustion (10)
Heating efficiency (18)

*All times are approximate and shown as (time in minutes).

Module 3 – Gas Furnaces

Course Overview

In this module students learn basic furnace design, gas system components, furnace controls, and system controls and components.

HVAC Training Objectives

Describe the heat exchangers used in the three types of furnaces and how they differ in achieving the efficiency levels
Identify the relationship between CFM and temperature rise
Identify the types of blowers used in furnaces and how the airflow is changed
Name the basic gas controls found on a typical furnace and their function
Name the types of ignition controls and how they work
Identify the safety controls found on a typical gas furnace and the function of each
Select from a list the operating controls used on typical gas furnaces

Topics Covered*

Furnace design (47)
Gas system components (30)
System controls and components (10)

*All times are approximate and shown as (time in minutes).

Module 4 – Gas Burners

Course Overview

Module 4 expands on basic concepts from the first three modules and includes: theoretical flame characteristics; burner design; actual flame characteristics; combustion systems; and pilot burners.

HVAC Training Objectives

Name the three color zones in a burner and what is happing in each zone
Select the definition of primary air and secondary air in a burner
Name the two factors of gas combustion which affect flame stability
Name the two functions of the gas orifice and the cautions to observe when changing orifices
Explain the function of the venturi, burner head, primary air shutters and carryover ports
Name three types of pilot burners and how they function

Topics Covered*

Theoretical flame characteristics (24)
Burner design (14)
Actual flame characteristics (15)
Combustion systems (5)
Pilot burners (5)

*All times are approximate and shown as (time in minutes).

Module 5 – Gas Controls

Course Overview

This module focuses on the controlled combustion process: gas controls; manual and automatic valves; and gas regulators.

HVAC Training Objectives

Identify the basic components, function and principle of operation of a gas pressure regulator
Identify the main components and the operating principle of a typical automatic gas valve
Explain the term redundant as it applies to automatic combination gas valves
Explain what is meant by “pick” and “hold” coils used in automatic gas valve
Describe the steps you would take to troubleshoot a gas valve

Topics Covered*

Pressure regulators (15)
Gas valves (16)
Combination gas valves (14)
Troubleshooting gas valves (6)

*All times are approximate and shown as (time in minutes).

Module 6 – Gas Ignition Systems

Course Overview

Module 6 explains the three types of ignition systems commonly used: standing pilot; re-ignition pilot; and direct burner ignition.

HVAC Training Objectives

Indicate the function of a standing pilot and name the two functional components
Explain the major steps to troubleshoot a thermocouple pilot
Explain the function and operation of a flame rectification ignition system
Explain the function and operation of a spark re-ignition system
Describe the steps to follow in troubleshooting a spark re-ignition system
Describe the operation of a glow coil re-ignition system
Explain the steps to troubleshoot a glow coil re-ignition system

Topics Covered*

Standing pilots (17)
Pilot re-ignition systems (21)
Direct burner ignition (8)

*All times are approximate and shown as (time in minutes).

Module 7 – Gas Safety & Operating Controls

Course Overview

HVAC Training Objectives

Identify six safety controls found on various types of gas furnaces
Explain how to check the operation of a limit switch
Identify three safety controls used in conjunction with induced draft combustion systems
Identify and explain the main differences in safety controls between natural draft and condensing furnaces
Identify six operating controls found on various gas furnaces
Identify seven situations that should be considered when locating a thermostat
Explain the function and operation of a heat anticipator in a room thermostat

Topics Covered*

Safety Controls (24)
Operating Controls (16)
System controls (19)

*All times are approximate and shown as (time in minutes).

Module 8 – Furnace Installation Practices

Course Overview

In Module 8 students learn application principles: planning; designing; and selecting equipment, as well as proper gas-piping techniques and installation practices.

HVAC Training Objectives

State the three concepts that apply to a good furnace installation
Explain the relationship between building heating load and furnace capacity
Describe what openings need to be provided in the building for combustion air
State the factors involved in determining the size of the gas supply pipe
Describe two leak dedication methods to be used with gas pipe
State how minimum clearances impact location of a gas furnace
State the startup steps to be taken with all gas furnaces

Topics Covered*

Application principles (24)
Gas piping (18)
Installation principles (12)
Start-up Procedures (19)

*All times are approximate and shown as (time in minutes).

Module 9 – Ventilation & Combustion Air

Course Overview

This module introduces terminology of Category I vent design basics, vent design and combustion air, as well as Category IV venting and combustion air.

HVAC Training Objectives

Explain the differences between a condensing furnace vent system and a natural-draft vent system
Explain why a vent must be large enough for a furnace and what factors must be considered in selecting the proper vent size diameter
State the characteristics of a vent that are needed for best performance
Define the term common vent and state the five design rules
Be able to select a vent pipe diameter from the vent pipe sizing tables given the furnace input, the vertical height, and the lateral length of the vent
Explain the requirements of a Category IV venting system

Topics Covered*

Category 1 venting basics (28)
Category 2 vent design (17)
Category 1 combustion air (20)
Category IV venting and combustion (8)

*All times are approximate and shown as (time in minutes).

Module 10 – Gas Troubleshooting

Course Overview

HVAC Training Objectives

Use a gas orifice calculator to determine the proper manifold pressure for a given furnace, orifice and gas
Describe how to clock a gas meter
Explain how to measure temperature rise and how to use it to calculate the CFM of air being circulated
Define what is meant by lifting flames, what causes it and how to correct it
Identify two methods that can be used to determine if a heat exchanger is cracked
Define what is meant by delayed ignition, what causes it and how it can be corrected
Explain flame rollout, what causes it and how it can be corrected