Gas Appliance Service Certificate of Qualification - BC Safety Authority

Gas Safety
Syllabus
for
Gas Appliance Service Certificate of Qualification
Examination (Formerly the Class C)

Syllabus for the Gas Appliance Service Certificate of Qualification Examination
1. Prerequisites to obtain a gas appliance service certificate of
qualification
An applicant for a gas appliance service certificate of qualification must have
successfully completed a course in gas appliance service training acceptable
to a provincial safety manager.
2. *Scope of work that may be performed by an individual holding a gas
appliance service certificate of qualification
A gas appliance service certificate of qualification entitles the holder to
perform the servicing of the following gas systems while employed by a
licensed gas contractor or under an appropriate permit:
(a) gas appliances installed for residential use, or
(b) light commercial appliances up to an input of 82 kW (280 M Btu).
*Note: The gas appliance service certificate of qualification is intended for the
servicing (maintenance) and minor repair of gas fired residential appliances.
The servicing of a domestic range or dryer may require the removal of either
appliance to a repair facility. After repairing the appliance it may be reinstalled
by the gas appliance service certificate of qualification holder.
The gas appliance service certificate of qualification does not allow: the
installation of new or replacement appliances, the replacement of heat
exchangers, the installation of gas piping, the repair or installation of venting.
3. Subject Areas of Study
B. C. Safety Standards Act, Safety Standards General Regulation and the
Gas Safety Regulation
3.1 Gas Properties
3.1.1.1 Sources, Contents (Natural & Propane)
3.1.1.2 Specific Gravity
3.1.1.3 Flammable Limits
3.1.1.4 Ignition Temperature
3.1.1.5 Flame Speed
3.1.1.6 Toxicity
3.1.1.7 State (Liquid & Gaseous)
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Syllabus for the Gas Appliance Service Certificate of Qualification Examination
3.2 Combustion
3.2.1.1 Perfect Combustion
3.2.1.2 Products of Combustion & Volumes
3.2.1.3 Air Required
3.2.1.4 CO
3.2.1.5 Air (Combustion, excess & dilution)
3.2.1.6 Flue Gas Analysis
3.2.1.7 Combustion Efficiency
3.3 Regulators
3.3.1.1 Principle of Operation
3.3.1.2 Types-Service, System, Appliance
3.3.1.3 Low Pressure Systems (Natural)
3.3.1.4 Two stage Propane regulation
3.3.1.5 2PSIG
3.3.1.6 High Pressure
3.3.1.7 Venting of Regulators
3.3.1.8 Sizing
3.3.1.9 Regulations
3.4 Appliances
3.4.1.1 B.C. Gas Code (Part 6 B149)
3.4.1.2 Hot Air Furnaces & Duct Systems
3.4.1.3 Boilers (Pool Htrs) & HW Heating
3.4.1.4 Water Heaters, Storage & Instantaneous
3.4.1.5 Residential Gas Ranges
3.4.1.6 Clothes Dryers
3.4.1.7 Fireplaces (all types)
3.4.1.8 Commercial Kitchen Appliances (ranges, salamanders,
deep fat fryers, charbroilers, steamers, stockpot burners,
chinese woks, griddles & convection ovens)
3.4.1.9 Unit Heaters
3.4.1.10 Roof Top Units
3.4.1.11 Barbeques
3.4.1.12 Infra Red Heating
3.4.1.13 Refrigerators
3.4.1.14 Conversion from other Fuels
3.4.1.15 Direct Vent Space Heaters
3.4.1.16 Wall Furnaces
3.4.1.17 Miscellaneous Appliances
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Syllabus for the Gas Appliance Service Certificate of Qualification Examination
3.5 Combustion Air Sizing
3.5.1.1 Regulations
3.5.1.2 Sizing up to 400 MBTU
3.5.1.3 Make-up Air Systems
3.6 Vent Sizing
3.6.1.1 Purposes
3.6.1.2 Principles
3.6.1.3 House as a System
3.6.1.4 Draft Control
3.6.1.5 Materials
3.6.1.6 Sizing Tables & Notes
3.6.1.7 Direct Vent
3.6.1.8 Installation
3.6.1.9 Fan, Forced & Induced
3.6.1.10 Regulations
3.6.1.11 Vent Sizing
3.7 Burners
3.7.1.1 Principles
3.7.1.2 Primary & Secondary Air (Requirements and Adjustments)
3.7.1.3 Pilot Burners
3.7.1.4 Burner Types
3.7.1.5 Lifting, Flashback & Problems
3.7.1.6 Orifice Types
3.7.1.7 Pressure & Orifice
3.7.1.8 Orifice Tables & Sizing
3.7.1.9 Input & Output
3.7.1.10 Converting (Natural to/from Propane)
3.7.1.11 High Altitude
3.8 Meter Clocking
3.8.1.1 Gas Meter Operation
3.8.1.2 Metric Meters
3.8.1.3 Rotary Meters
3.8.1.4 Clocking Formula
3.8.1.5 Clocking Low Pressure
3.8.1.6 Pressure Correction Factor
3.8.1.7 Clocking 2 PSIG
3.8.1.8 Clocking High Pressure
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Syllabus for the Gas Appliance Service Certificate of Qualification Examination
3.9 Controls
3.9.1.1 Pilot Valves
3.9.1.2 Limit Controls & Safety Switches
3.9.1.3 Electric Valves
3.9.1.4 Non-Electric Valves
3.9.1.5 Combination Valves
3.9.1.6 Water Heater Valves
3.9.1.7 Gas Range Valves
3.9.1.8 Oven Controls (Thermostats)
3.9.1.9 Oven Safety Controls
3.9.1.10 Griddle Thermostats
3.9.1.11 Deep Fat Fryer Thermostats
3.9.1.12 Boiler/Hot Water Aquastats
3.9.1.13 Fireplace Control Valves
3.9.1.14 Safety Shutoff Valves
3.9.1.15 Flame Safeguard Systems & Purpose
3.9.1.16 Flame Rods
3.9.1.17 Hot Surface Ignitors
3.9.1.18 Spark Control Modules
3.9.1.19 Hot Surface Ignitor Modules
3.10 Electrical
3.10.1.1 Electrical Theory
3.10.1.2 AC & DC
3.10.1.3 Magnetism
3.10.1.4 Circuits, Series & Parallel
3.10.1.5 Symbols
3.10.1.6 Diagrams, Schematic & Ladder
3.10.1.7 Millivolt
3.10.1.8 Meters & Troubles Shooting
3.10.1.9 Polarity & Phasing
3.10.1.10 Single Thermocouples
3.10.1.11 Powerpiles
3.10.1.12 Pilot Generators
3.10.1.13 Millivolt Trouble Shooting
3.10.1.14 Voltage Drop Thru Components & Wiring (Millivolt)
3.10.1.15 Flame Rectification
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Syllabus for the Gas Appliance Service Certificate of Qualification Examination
3.11 Pipe Sizing
3.11.1.1 Related Regulations
3.11.1.2 Materials (Natural & Propane)
3.11.1.3 Joining Pipe (Materials & Methods)
3.11.1.4 Flow & Pressure Drop
3.11.1.5 Sizing Tables
3.11.1.6 Sizing Low & 2PSIG
3.11.1.7 Manual Shut-offs
3.11.1.8 Flexible Metallic Connectors & Hoses
3.11.1.9 Testing Pipe
3.11.1.10 Pipe Sizing
3.12 Servicing
3.12.1.1 Wiring Diagrams
3.12.1.2 Lubricating gas valves
3.12.1.3 Controls
3.12.1.4 Ignition Systems
3.12.1.5 Trouble shooting Millivolt Systems
3.12.1.6 Trouble shooting Electrical Problems
3.12.1.7 Trouble shooting Venting Problems
3.12.1.8 Trouble shooting Appliance Operation
3.12.1.9 Trouble shooting Gas Fireplaces
3.12.1.10 Trouble shooting Burner Operation
3.12.1.11 Checking Regulators (Operation & Lock-up)
3.12.1.12 Checking Heat Exchangers
3.12.1.13 Commission of Appliances (Pressure set-up, Temperature
Rise, Air Adjustment, Stack Temperature, Heat Anticipator
Setting, Motor Circuit Amperage, CO & Aldehydes)
3.12.1.14 Oiling Fan Motors
3.12.1.15 Adjusting Fan Belts
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