Major Work Activity D - Installs controls and electrical systems

Table of Contents

• Task D-10 Selects and installs combustion control systems
  • D-10.01 Selects combustion control components
  • D-10.02 Installs combustion control components
• Task D-11 Selects and installs flame safeguard systems
  • D-11.01 Selects flame safeguard components
  • D-11.02 Installs flame safeguard components
• Task D-12 Selects and installs operating control systems
  • D-12.01 Selects operating control components
  • D-12.02 Installs operating control components
• Task D-13 Selects and installs electrical systems
  • D-13.01 Selects electrical components
  • D-13.02 Installs electrical components
• Task D-14 Selects and installs automation and instrumentation control systems
  • D-14.01 Selects automation and instrumentation control components
  • D-14.02 Installs automation and instrumentation control components

Task D-10 Selects and installs combustion control systems

Task Descriptor

Gasfitters assemble, place, secure and connect combustion control systems in residential, industrial, commercial and institutional (ICI) sectors.
The controls enable the systems to start, stop, monitor and modulate to obtain safe and energy efficient operation.

Range of Variables

• components include: pressure transmitters, servo motors, control modules, fuel air ratio controls, NOx controls, programmable logic controllers (PLC), variable frequency drives (VFD), supervisory systems, O2, NOx and CO monitors
• factors include: site requirements, type of equipment, manufacturers’ specifications, certifying bodies, codes, standards and regulations
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• components include: pressure transmitters, servo motors, control modules, fuel air ratio controls, NOx controls, programmable logic controllers (PLC), variable frequency drives (VFD), supervisory systems, O2, NOx and CO monitors
• electrical systems include: milli voltage, low voltage, line voltage (single [1] phase, three [3] phase), AC/DC, resistive
• electrical system components include: starters, capacitors, temperature switches, relays, disconnects, transformers, flow switches, pressure switches, line voltage filters, overload and overcurrent protection, limit switches, pumps, interlocks, motors, actuators, speed drives
• electricity principles include: Ohm’s Law, Kirchhoff’s Laws
• types of circuits include: series, parallel, series/parallel
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• tools and equipment include: hand tools, drills, multimeters, signal generators, wire strippers, wiring identification equipment, network cabling tools and testers
• combustion control components include: pressure transmitters, servo motors, control modules, fuel air ratio controls, NOx controls, PLCs, VFDs, supervisory systems, O2, NOx and CO monitors
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• combustion control components include: pressure transmitters, servo motors, control modules, fuel air ratio controls, NOx controls, PLCs, VFDs, supervisory systems, O2, NOx and CO monitors
• electrical systems include: milli voltage, low voltage, line voltage (single [1] phase, three [3] phase), AC/DC, resistive
• electrical system components include: starters, capacitors, temperature switches, relays, disconnects, transformers, flow switches, pressure switches, line voltage filters, overload and overcurrent protection, limit switches, pumps, interlocks, motors, actuators, speed drives
• electricity principles include: Ohm’s Law, Kirchhoff’s Laws
• types of circuits include: series, parallel, series/parallel
• tools and equipment include: hand tools, drills, multimeters, signal generators, wire strippers, wiring identification equipment, network cabling tools and testers
• hazards include: energy sources, environmental, working at heights, confined spaces
• procedures to install combustion controls and their components include: verifying original equipment specifications; selecting and verifying components; selecting location and enclosures; installing mounting points and brackets for components; installing certified enclosures; mounting and connecting combustion controls and components; programming and configuring control modules; verifying, setting up and confirming operation prior to commissioning; creating as-built final drawings
• site-specific and regional considerations include: seismic restraints, climate, ambient temperature, altitude
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Task D-11 Selects and installs flame safeguard systems

Task Descriptor

Gasfitters assemble, place, secure and connect flame safeguard systems in residential and ICI sectors.

A flame safeguard system controls the safety aspects of establishing and maintaining a flame during the run period and monitoring during the off period.

Range of Variables

• components include: flame rods or scanners (ultraviolet [UV], infrared [IR], self-checking), wiring base, chassis, display, purge timer, flame amplifier, hot surface ignition (HSI), direct spark ignitor (DSI), pilots
• factors include: site requirements, certifying bodies, type of equipment, manufacturers’ specifications,codes, standards and regulations
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• flame safeguards include: solid state, microprocessor, programmable, non-programmable
• components include: flame rods or scanners (ultraviolet [UV], infrared [IR], self-checking), wiring base, chassis, display, purge timer, flame amplifier, hot surface ignition (HSI), direct spark ignitor (DSI), pilots
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• tools and equipment include: hand tools, drills, multimeters, signal generators, wire strippers, wiring identification equipment, network cabling tools and testers
• components include: flame rods or scanners (UV, IR, self-checking), wiring bases, chassis, displays, purge timers, flame amplifiers, HSI, DSI, pilots
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA
• flame safeguards include: solid state, microprocessor, programmable, non-programmable
• job specifications include: purge times, flame amplifiers

Range of Variables

• flame safeguards include: solid state, microprocessor, programmable, non-programmable
• components include: flame rods or scanners (UV, IR, self-checking), wiring bases, chassis, displays, purge timers, flame amplifiers, HSI, DSI, pilots
• procedures to install flame safeguards and their components include: verifying original equipment specifications; selecting and verifying components; selecting location and enclosures; installing mounting points and brackets for components; installing certified enclosures; mounting and connecting flame safeguards and components; configuring flame safeguard; verifying, setting up and confirming operation of flame safeguard prior to commissioning; creating as-built final drawings
• tools and equipment include: hand tools, drills, multimeters, signal generators, wire strippers, wiring identification equipment, network cabling tools and testers
• hazards include: energy sources, environmental, working at heights, confined spaces, static discharge
• site-specific and regional considerations include: climate, ambient temperature
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Task D-12 Selects and installs operating control systems

Task Descriptor

Gasfitters assemble, place, secure and connect limits and operating control systems in residential, and ICI sectors.

The operating control system’s function is to start, stop, monitor and modulate the appliance’s operation to ensure its safe and efficient operation.

Range of Variables

• components include: on-off operators, low and high gas pressure switches, combustion air proving switches, high limit controls, gas valves, temperature controls, liquid level controls, alternate fuel controls (e.g. digester gas, fuel selector switches, flame arrestors, oil valves, return oil systems), waste fuel system components (fuel oil preheat systems), interlocks, control point instrumentation (e.g., resistance temperature detectors [RTD], pressure transducers, thermocouples, flow meters), PLCs, programmable thermostats
• factors include: site requirements, certifying bodies, type of equipment, manufacturers’ specifications,codes, standards and regulations
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• components include: on-off operators, low and high gas pressure switches, combustion air proving switches, high limit controls, gas valves, temperature controls, liquid level controls, alternate fuel controls (e.g. digester gas, fuel selector switches, flame arrestors, oil valves, return oil systems), waste fuel system components (fuel oil preheat systems), interlocks, control point instrumentation (e.g., resistance temperature detectors [RTD], pressure transducers, thermocouples, flow meters), PLCs, programmable thermostats
• control signals and protocols include: 4 to 20 milliamps (mA), 0-10 DC volts, Modbus, BACnet, Hypertext Transfer Protocol (HTTP), Address Resolution Protocol (ARP), Wheatstone bridge
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Range of Variables

• tools and equipment include: hand tools, drills, multimeters, signal generators, wiring identification equipment, network cabling tools and testers
• components include: on-off operators, low and high gas pressure switches, combustion air proving switches, high limit controls, gas valves, temperature controls, liquid level controls, alternate fuel controls (e.g., digester gas, fuel selector switches, flame arrestors, oil valves, return oil systems), waste fuel system components (fuel oil preheat system), interlocks, control point instrumentation (e.g., RTDs, pressure transducers, thermocouples, flow meters), PLCs, programmable thermostats
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA
• job specifications include: set points, high limits, minimum/maximum gas pressures

Range of Variables

• components include: on-off operators, low and high gas pressure switches, combustion air proving switches, high limit controls, gas valves, temperature controls, liquid level controls, alternate fuel controls (e.g., digester gas, fuel selector switches, flame arrestors, oil valves, return oil systems), waste fuel system components (fuel oil preheat system), interlocks, control point instrumentation (e.g., RTDs, pressure transducers, thermocouples, flow meters), PLCs, programmable thermostats
• control signals and protocols include: 4 to 20 mA, 0-10 DC volts, Modbus, BACnet, HTTP, ARP, Wheatstone bridge
• procedures to install operating controls and their components include: verifying original equipment specifications; selecting and verifying components; selecting location and enclosures; installing mounting points and brackets; installing certified enclosures; mounting and connecting components; configuring operating controls; verifying, setting up and confirming operation prior to commissioning; creating as-built final drawings
• tools and equipment include: hand tools, drills, multimeters, signal generators, wiring identification equipment, network cabling tools and testers
• hazards include: energy sources, environmental, working at heights, confined spaces, hazardous materials (e.g., mercury, silica, asbestos, ceramic fibre insulation, lead)
• site-specific and regional considerations include: seismic restraints, climate, ambient temperature, altitude
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6), CEC, NBC, AHJ, NFPA

Task D-13 Selects and installs electrical systems

Task Descriptor

Gasfitters assemble, place, secure and connect electrical components (from the disconnect to the appliance) in residential and ICI sectors. In some provinces and territories, gasfitters may be restricted in electrical work they can perform and must coordinate work as needed with appropriate trades.

Electrical components enable system operation by providing power to sub-systems such as electronic controls, pumps and motors to obtain the designed condition and maintain safe operation.

Range of Variables

• original equipment specifications include: voltage, current, phase, resistance, revolutions per minute (RPM)
• electrical components include: transformers, relays (solid-state relays [SSR], electromechanical relays), motor starters, motors, capacitors, power supplies, protective devices (overload, overcurrent), resistors, actuators, silicon-controlled rectifiers (SCR), DC motor controls and electronically commutated motors (ECM), VFDs, line voltage filters, line voltage reactors, switches and limits, disconnects and motor control centre (MCC) panels, power factor correction devices, uninterrupted power supply (UPS)
• factors include: site requirements, type of equipment, manufacturers’ specifications, certifying bodies, codes, standards and regulations
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6, B108), CAN/BNQ1784, CEC, NBC, AHJ, NFPA
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes

Range of Variables

• electrical components include: transformers, relays (solid-state relays [SSR], electromechanical relays), motor starters, motors, capacitors, power supplies, protective devices (overload, overcurrent), resistors, actuators, silicon-controlled rectifiers (SCR), DC motor controls and electronically commutated motors (ECM), VFDs, line voltage filters, line voltage reactors, switches and limits, disconnects and motor control centre (MCC) panels, power factor correction devices, uninterrupted power supply (UPS)
• electrical systems include: milli voltage, low voltage, line voltage (single [1] phase, three [3] phase), AC/DC, resistive
• electricity principles include: Ohm’s Law, Kirchhoff’s Laws
• types of circuits include: series, parallel, series/parallel
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6, B108), CAN/BNQ1784, CEC, NBC, AHJ, NFPA

Range of Variables

• tools and equipment include: hand tools, drills, multimeters, signal generators, wiring identification equipment, network cabling tools and testers
• electrical components include: transformers, relays (SSR, electromechanical), motor starters, motors, capacitors, power supplies, protective devices (overload, overcurrent), resistors, actuators, SCRs, motor controls, DC motor controls and ECMs, VFDs, line voltage filters, line voltage reactors, switches and limits, disconnects and MCC panels, power factor correction devices, UPS
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6, B108), CAN/BNQ1784, CEC, NBC, AHJ, NFPA, ANSI/ASME
• best practices include: grouped and well-organized wire runs; end wire labelling and identification; approved connection techniques; isolation of control lines, communication lines and line voltage; create and update representative as-built drawings
• job specifications include: efficiency, performance

Range of Variables

• electrical components include: transformers, relays (SSR, electromechanical), motor starters, motors, capacitors, power supplies, protective devices (overload, overcurrent), resistors, actuators, SCRs, motor controls, DC motor controls and ECMs, VFDs, line voltage filters, line voltage reactors, switches and limits, disconnects and MCC panels, power factor correction devices, UPS
• electrical systems include: milli voltage, low voltage, line voltage (single [1] phase, three [3] phase), AC/DC, resistive
• electricity principles include: Ohm’s Law, Kirchhoff’s Laws
• types of circuits include: series, parallel, series/parallel
• procedures to install electrical components include: verifying original equipment specifications; selecting and verifying electrical components; selecting and sizing conductors for application; selecting location and enclosures; installing mounting points and brackets; installing certified enclosures; mounting and connecting electrical components; performing wiring of electrical components; configuring VFDs and ECMs; verifying, setting up and confirming operation prior to commissioning; creating as-built final drawings
• tools and equipment include: hand tools, drills, multimeters, signal generators, wiring identification equipment, network cabling tools and testers
• hazards include: energy sources, environmental, working at heights, confined spaces, hazardous materials (e.g., mercury, silica, asbestos, ceramic fibre insulation, lead)
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.2, B149.3, B149.5, B149.6, B108), CAN/BNQ1784, CEC, NBC, AHJ, NFPA, ANSI/ASME

Task D-14 Selects and installs automation and instrumentation control systems

Task Descriptor

Gasfitters assemble, place, secure and connect automation and instrumentation control systems in residential and ICI sectors.

Automation control systems are used to control single units such as boilers as well as multiple heating applications for buildings.

Instrumentation control systems are used to control the flow of mediums such as liquid, steam and air.

Automation and instrumentation control systems provide monitoring, management, scheduling, load shedding, energy conservation, and enabling/disabling of equipment and processes to achieve efficiencies and precise parameter control.

Range of Variables

• original equipment specifications include: voltage, network protocols
• components include: control point instrumentation (RTDs, transducers, O2 and CO sensors, flow meters, proportional, integral and derivative [PID] components), set point instrumentation (BAS, process, stand-alone controllers)
• factors include: site requirements, certifying bodies, type of equipment, manufacturers’ specifications, codes, standards and regulations
• communication protocols include: baud rates, network communication protocols (Modbus, BACnet [MSTP, IP], HTTP, ARP, HART, local operation network [LON]), serial port protocols (e.g., RS-232, RS‑485, RS-422), communication speeds, wireless networks (e.g., Wi-Fi, ZigBee, Z-Wave)
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.3, B149.5), CEC, NBC, AHJ

Range of Variables

• components include: control point instrumentation (RTDs, transducers, O2 and CO sensors, flow meters, proportional, integral and derivative [PID] components), set point instrumentation (BAS, process, stand-alone controllers)
• communication protocols include: baud rates, network communication protocols (Modbus, BACnet [MSTP, IP], HTTP, ARP, HART, local operation network [LON]), serial port protocols (e.g., RS-232, RS‑485, RS-422), communication speeds, wireless networks (e.g., Wi-Fi, ZigBee, Z-Wave)
• electrical systems include: milli voltage, low voltage, line voltage (single [1] phase, three [3] phase), AC/DC, resistive
• electricity principles include: Ohm’s Law, Kirchhoff’s Laws
• types of circuits include: series, parallel, series/parallel
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.3, B149.5), CEC, NBC, AHJ

Range of Variables

• tools and equipment include: hand tools, wiring identification equipment, network cabling tools and testers
• components include: control point instrumentation (RTDs, transducers, O2 and CO sensors, flow meters, PID components), set point instrumentation (BAS, process, stand-alone controllers)
• enclosures include: structures, existing or new panels (e.g., control, electrical, junction), junction boxes, switch boxes
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.3, B149.5), CEC, NBC, AHJ
• best practices include: grouped and well-organized wire runs; end wire labelling and identification; approved connection techniques; isolation of control lines, communication lines and line voltage; create and update representative as-built drawings

Range of Variables

• components include: control point instrumentation (RTDs, transducers, O2 and CO sensors, flow meters, PID components), set point instrumentation (BAS, process, stand-alone controllers)
• communication protocols include: baud rates, network communication protocols (Modbus, BACnet [MSTP, IP], HTTP, ARP, HART, local operation network [LON]), serial port protocols (e.g., RS-232, RS‑485, RS-422), communication speeds, wireless networks (e.g., Wi-Fi, ZigBee, Z-Wave)
• electrical systems include: milli voltage, low voltage, line voltage (single [1] phase, three [3] phase), AC/DC, resistive
• electricity principles include: Ohm’s Law, Kirchhoff’s Laws
• types of circuits include: series, parallel, series/parallel
• procedures to install automation and instrumentation control systems, and their components include: selecting and verifying components; selecting communication protocols; selecting location and enclosures; installing mounting points and brackets for components and cabling; installing enclosures; mounting and connecting automation and instrumentation control systems and their components; performing wiring of systems; programming and configuring controllers; checking control configurations; verifying, setting up and confirming operation prior to commissioning; creating as-built final drawings
• tools and equipment include: hand tools, wiring identification equipment, network cabling tools and testers
• hazards include: energy sources, environmental, working at heights, confined spaces, hazardous materials (e.g., mercury, silica, asbestos, ceramic fibre insulation, lead)
• codes, standards and regulations (note that certain codes may not be adopted in some provinces and territories) include: CSA (B149.1, B149.3, B149.5), CEC, NBC, AHJ

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