Table of Contents
Task C-7 Selects and installs venting systems
Task Descriptor
Gasfitters install venting systems to convey potential hazardous gases to a safe location.
C-7.01 - Selects materials for venting systems
C-7.01 - Selects materials for venting systems
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-7.01.01P |
determine location of venting lines, terminations and condensation drain traps |
location of venting lines, terminations and condensation drain traps are determined according to factors while considering structure without impacting its integrity |
| C-7.01.02P |
select support materials |
support materials are selected according to job and manufacturers’ specifications, codes, standards and regulations |
| C-7.01.03P |
select protection materials |
protection materials are selected according to job and manufacturers’ specifications, codes, standards and regulations |
| C-7.01.04P |
select venting materials |
venting materials are selected according to manufacturers’ specifications, codes, standards and regulations |
| C-7.01.05P |
select fasteners |
fasteners are selected according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- factors include: drawings, manufacturers’ specifications, best practices, codes, standards and regulations
- support materials include: hangers, brackets, braces, strapping
- 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), NBC, AHJ, NFPA, ANSI/ASME
- protection materials include: wood, drywall, insulating millboard, metal, fire stops
- venting materialsinclude: fittings, flashings, pipes, sleeves, liners, connectors, fire stops, sealants, chimneys, terminations, adapters, glues, primers, gaskets, lubricants
- fasteners include: bolts, anchors, straps, screws, clamps
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-7.01.01L |
demonstrate knowledge of venting systems, their characteristics, applications and operation |
identify types of venting systems and describe their characteristics and applications |
| describe operating principles of venting systems |
| interpret information pertaining to venting systems found on drawings and manufacturers’ specifications |
| describe draft and how it is created and controlled |
| describe venting system combinations and category of appliances I, II, III and IV |
| C-7.01.02L |
demonstrate knowledge of support materials, protection materials, venting materials and fasteners, their characteristics, applications and operation |
identify types of support materials, and describe their characteristics and applications |
| identify types of protection materials and describe their characteristics and applications |
| identify types of venting materials and describe their classifications, characteristics and applications |
| identify types of fasteners and describe their characteristics and applications |
| interpret information pertaining to support materials, protection materials, venting materials and fasteners, found on drawings, manufacturers’ specifications, codes, standards and regulations |
| C-7.01.03L |
demonstrate knowledge of procedures to select venting systems |
describe procedures to select venting systems |
| identify hazards and describe safe work practices to select venting systems |
| C-7.01.04L |
demonstrate knowledge of training and certification requirements to select venting systems |
identify training and certification requirements to select venting systems |
| C-7.01.05L |
demonstrate knowledge of regulatory requirements pertaining to venting systems |
identify codes, standards and regulations pertaining to venting systems |
Range of Variables
- characteristics (of venting materials) include: gauge, size, composition (plastic, stainless steel, copper, aluminum, galvanized steel, masonry)
- operating principles of venting systems include: draft velocity, pressure, temperature, condensate collection and neutralizers
- support materials include: hangers, brackets, braces, strapping
- protection materials include: wood, drywall, insulating millboard, metal, fire stops
- venting materialsinclude: fittings, flashings, pipes, sleeves, liners, connectors, fire stops, sealants, chimneys, terminations, adapters, glues, primers, gaskets, lubricants
- fasteners include: bolts, anchors, straps, screws, clamps
- procedures to select venting systems include:determining location of venting lines, terminations and condensation drain traps; selecting support, venting, protection materials and fasteners
- hazards include: dust, exposed fibres, burrs, sparks, fumes, sharp edges, burns
- 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), NBC, AHJ, NFPA, ANSI/ASME
C-7.02 - Prepares materials for venting systems
C-7.02 - Prepares materials for venting systems
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| NV |
yes |
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yes |
yes |
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yes |
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yes |
yes |
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-7.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to task and manufacturers’ specifications |
| C-7.02.02P |
calculate venting material length and fitting allowances |
venting material length and fitting allowances are calculated according to system requirements, manufacturers’ specifications, codes, standards and regulations |
| C-7.02.03P |
measure section length |
section length is measured according to location of venting termination and appliance |
| C-7.02.04P |
cut venting materials to length |
venting materials are cut to length according to calculations |
| C-7.02.05P |
ream, chamfer or crimp venting materials |
venting materials are reamed, chamfered or crimped according to manufacturers’ specifications |
| C-7.02.06P |
dry fit components and fittings |
components and fittings are dry fit according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes
- venting materialsinclude: fittings, flashings, pipes, sleeves, fasteners, connectors, fire stops, sealants, adhesives, chimneys
- 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), NBC, AHJ, NFPA, ANSI/ASME
- components include: locking bands, mechanical connections, terminations
- fittings include: tees, couplings, bends, caps, plugs, adapters
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-7.02.01L |
demonstrate knowledge of venting materials, their characteristics, applications and operation |
identify types of venting materials, and describe their characteristics and applications |
| describe operating principles of venting materials |
| interpret information pertaining to venting materials found on drawings and manufacturers’ specifications |
| C-7.02.02L |
demonstrate knowledge of venting systems, their characteristics, applications and operation |
identify types of venting systems and describe their characteristics and applications |
| describe operating principles of venting systems |
| interpret information pertaining to venting systems found on drawings and manufacturers’ specifications |
| C-7.02.03L |
demonstrate knowledge of procedures to prepare materials for venting systems |
identify tools and equipment used to prepare materials for venting systems, and describe their procedures for use |
| identify hazards and describe safe work practices to prepare materials for venting systems |
| describe procedures to prepare materials for venting systems |
| C-7.02.04L |
demonstrate knowledge of regulatory requirements pertaining to venting systems |
identify codes, standards and regulations pertaining to venting systems |
Range of Variables
- venting materialsinclude: fittings, flashings, pipes, sleeves, fasteners, connectors, fire stops, sealants, adhesives, chimneys
- characteristics (of venting materials) include: gauge, composition (plastic, stainless steel, copper, aluminum, galvanized steel, masonry)
- operating principles of venting systems include: draft velocity, pressure, temperature, condensate collection and neutralizers
- procedures to prepare materials for venting systems include: calculating venting material length and fitting allowances, measuring section length, cutting venting materials to length, reaming, chamfering or crimping venting materials, dry fitting components and fittings
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes
- hazards include: repetitive movements, dust, exposed fibres, burrs, sparks, fumes, sharp edges, heavy lifting
- 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), NBC, AHJ, NFPA, ANSI/ASME
C-7.03 - Installs venting systems
C-7.03 - Installs venting systems
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yes |
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yes |
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yes |
yes |
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-7.03.01P |
select and use tools and equipment |
tools and equipment are selected and used according to task |
| C-7.03.02P |
identify, measure and mark location of support materials for venting systems |
location of support materials for venting systems are identified, measured and marked according to job and manufacturers’ specifications, codes, standards and regulations |
| C-7.03.03P |
position support materials for venting systems |
support materials for venting systems are positioned according to job and manufacturers’ specifications, codes, standards and regulations |
| C-7.03.04P |
fasten support materials to structure |
support materials are fastened to structure using fasteners |
| C-7.03.05P |
prepare connectors for joining |
connectors are prepared for joining according to manufacturers’ specifications |
| C-7.03.06P |
mount venting systems on supports |
venting systems are mounted on supports according to manufacturers’ specifications, codes, standards and regulations |
| C-7.03.07P |
connect components and fittings |
components and fittings are connected using connecting methods according to manufacturers’ specifications, codes, standards and regulations |
| C-7.03.08P |
terminate venting systems |
venting systems are terminated according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes, wrenches, fastening tools
- support materials include: hangers, brackets, braces
- 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), NBC, AHJ, NFPA, ANSI/ASME
- fasteners include: bolts, anchors, straps, screws, clamps
- preparing connectors includes: cleaning, priming, gluing, lubricating
- components include: locking bands, mechanical connections, terminations
- fittings include: tees, couplings, bends, caps and terminations, plugs, adapters
- connecting methods include:solvent welding, brazing, welding, using clamps and mechanical fittings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-7.03.01L |
demonstrate knowledge of venting systems, their characteristics, applications and operation |
identify types of venting systems, and describe their characteristics and applications |
| describe operating principles of venting systems |
| interpret information pertaining to venting systems found on drawings and manufacturers’ specifications |
| C-7.03.02L |
demonstrate knowledge of procedures to install venting systems |
identify tools and equipment used to install venting systems, and describe their procedures for use |
| identify hazards and describe safe work practices to install venting systems |
| describe procedures to install venting systems |
| identify venting considerations |
| describe procedures to measure for support materials |
| describe stack, draft and chimney effects |
| describe heat recovery systems and scrubbers |
| explain metric and imperial systems of measurement and conversions |
| C-7.03.03L |
demonstrate knowledge of training and certification requirements to install venting systems |
identify training and certification requirements to install venting systems |
| C-7.03.04L |
demonstrate knowledge of regulatory requirements pertaining to venting systems |
identify codes, standards and regulations pertaining to venting systems |
Range of Variables
- operating principles of venting systems include: draft velocity, pressure, temperature, condensate collection and neutralizers
- procedures to install venting systems include: identifying, measuring and marking location of support materials; positioning and fastening support materials; preparing connectors for joining; mounting venting on supports; connecting components and fittings; terminating venting systems
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes, wrenches, fastening tools
- hazards include: repetitive movements, dust, exposed fibres, burrs, sparks, fumes, sharp edges, heavy lifting
- venting considerations include: condensation, draining, grade, flue gas velocity, combustion analyzer test points, material clearances for natural and mechanical draft
- procedures to measure for support materials include: centre-to-centre, end-to-centre, end-to-end
- 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), NBC, AHJ, NFPA, ANSI/ASME
Task C-8 Selects and installs air supply systems
Task Descriptor
Gasfitters install air supply systems to maintain safe and efficient operation of gas appliances. They must be thoroughly familiar with prevailing construction methods, air infiltration, exhaust equipment, and consider the building as a system. In this task, air supply systems include combustion, excess, dilution and ventilation air for appliances located in a building or a structure.
C-8.01 - Selects materials for air supply systems
C-8.01 - Selects materials for air supply systems
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PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
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| NV |
yes |
NV |
yes |
yes |
ND |
yes |
ND |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-8.01.01P |
determine location of air supply systems, intakes and terminations |
location of air supply systems, intakes and terminations are determined according to factors while considering structure without impacting its integrity |
| C-8.01.02P |
calculate air supply material length, size, fitting allowances and round duct equivalence |
air supply material length, fitting allowances and round duct equivalence are calculated according to system requirements, manufacturers’ specifications, codes, standards and regulations |
| C-8.01.03P |
select air supply materials |
air supply materials are selected according to manufacturers’ specifications, codes, standards and regulations |
| C-8.01.04P |
select support materials |
support materials are selected according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-8.01.05P |
select protection materials |
protection materials are selected according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-8.01.06P |
select fasteners |
fasteners are selected according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- factors include: drawings, manufacturers’ specifications, best practices, codes, standards and regulations
- air supply materialsinclude: fittings, pipes, fasteners, turning vanes, terminations, grilles, louvres
- 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), NBC, AHJ, NFPA, ANSI/ASME
- support materials include: hangers, brackets, braces, strapping
- protection materials include: wood, drywall, insulating millboard, metal, fire stops
- fasteners include: bolts, anchors, straps, screws
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-8.01.01L |
demonstrate knowledge of air supply systems, their characteristics, applications and operation |
identify types of air supply systems, and describe their characteristics and applications |
| describe operating principles of air supply systems |
| interpret information pertaining to air supply systems found on drawings and manufacturers’ specifications |
| C-8.01.02L |
demonstrate knowledge of support materials, protection materials, air supply materials and fasteners, their characteristics, applications and operation |
identify types of support materials and describe their characteristics and applications |
| identify types of protection materials and describe their characteristics and applications |
| identify types of air supply materials and describe their characteristics and applications |
| identify types of fasteners and describe their characteristics and applications |
| interpret information pertaining to support materials, protection materials, air supply materials and fasteners found on drawings and manufacturers’ specifications |
| C-8.01.03L |
demonstrate knowledge of procedures to select air supply systems |
describe procedures to select air supply systems |
| C-8.01.04L |
demonstrate knowledge of regulatory requirements pertaining to air supply systems |
identify codes, standards and regulations pertaining to air supply systems |
Range of Variables
- types of air supply systems include: natural/passive, mechanical
- operating principles of air supply systems include: sizing, duct free area, fitting resistance, thermal traps, stack effects, grille/louver efficiency, building depressurization
- support materials include: hangers, brackets, braces, strapping
- protection materials include: wood, drywall, insulating millboard, metal, fire stops
- air supply materialsinclude: fittings, pipes, fasteners, turning vanes, terminations, grilles, louvres
- characteristics (of air supply materials) include: gauge, composition (wood, plastic, stainless steel, galvanized steel, specialty materials), fire ratings
- fasteners include: bolts, anchors, straps, screws
- procedures to select air supply systems include:determining location of air supply systems, intakes and terminations; calculating air supply material length, size, fitting allowances and round duct equivalence; selecting support, venting, protection materials and fasteners
- 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), NBC, AHJ, NFPA, ANSI/ASME
C-8.02 - Prepares materials for air supply systems
C-8.02 - Prepares materials for air supply systems
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NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
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| NV |
yes |
NV |
yes |
yes |
ND |
yes |
ND |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-8.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to task |
| C-8.02.02P |
measure section length |
section length is measured according to location of air supply termination or appliance connection |
| C-8.02.03P |
cut air supply materials to length |
air supply materials are cut to length according to calculations |
| C-8.02.04P |
ream, chamfer or crimp air supply materials |
air supply materials are reamed, chamfered or crimped according to manufacturers’ specifications |
| C-8.02.05P |
dry fit components and fittings |
components and fittings are dry fit according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes, bar folders, measuring tapes, notchers, rippers, seamers, stretchers, power tools
- air supply materialsinclude: fittings, pipes, fasteners, turning vanes, terminations, grilles, louvres, ducting
- components include: locking bands, mechanical connections, terminations
- fittings include: tees, couplings, bends, caps, plugs, adapters
- 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), NBC, AHJ, NFPA, ANSI/ASME
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-8.02.01L |
demonstrate knowledge of air supply materials, their characteristics, applications and operation |
identify types of air supply materials and describe their characteristics and applications |
| describe operating principles of air supply materials |
| interpret information pertaining to air supply materials found on drawings and manufacturers’ specifications |
| C-8.02.02L |
demonstrate knowledge of air supply systems, their characteristics, applications and operation |
identify types of air supply systems, and describe their characteristics and applications |
| describe operating principles of air supply systems |
| interpret information pertaining to air supply systems found on drawings and manufacturers’ specifications |
| C-8.02.03L |
demonstrate knowledge of procedures to prepare materials for air supply systems |
identify tools and equipment used to prepare materials for air supply systems, and describe their procedures for use |
| identify hazards and describe safe work practices to prepare materials for air supply systems |
| describe procedures to prepare materials for air supply systems |
| C-8.02.04L |
demonstrate knowledge of regulatory requirements pertaining to air supply systems |
identify codes, standards and regulations pertaining to air supply systems |
Range of Variables
- air supply materialsinclude: fittings, pipes, fasteners, turning vanes, terminations, grilles, louvres, ducting
- characteristics (of air supply materials) include: gauge, composition (wood, plastic, stainless steel, galvanized steel, specialty materials), fire ratings
- types of air supply systems include: natural/passive, mechanical
- operating principles of air supply systems include: sizing, duct free area, fitting resistance, thermal traps, stack effects, grille/louver efficiency, building depressurization
- procedures to prepare materials for air supply systems include: measuring section length; cutting air supply materials to length; reaming, chamfering or crimping air supply materials; dry fitting components and fittings
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes, bar folders, measuring tapes, notchers, rippers, seamers, stretchers, power tools
- hazards include: repetitive movements, dust, exposed fibres, burrs, sparks, fumes, sharp edges, heavy lifting
- 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), NBC, AHJ, NFPA, ANSI/ASME
C-8.03 - Installs air supply systems
C-8.03 - Installs air supply systems
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
yes |
NV |
yes |
yes |
ND |
yes |
ND |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-8.03.01P |
select and use tools and equipment |
tools and equipment are selected and used according to task |
| C-8.03.02P |
identify, measure and mark location of support materials for air supply systems |
location of support materials for air supply systems are identified, measured and marked according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-8.03.03P |
position support materials for air supply systems |
support materials for air supply systems are positioned according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-8.03.04P |
fasten support materials to structure |
support materials are fastened to structure using fasteners |
| C-8.03.05P |
prepare connectors for joining |
connectors are prepared for joining according to manufacturers’ specifications |
| C-8.03.06P |
connect components and fittings |
components and fittings are connected using connecting methods |
| C-8.03.07P |
mount and assemble air supply systems on supports |
air supply systems are mounted and assembled on supports according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-8.03.08P |
seal joint connections using sealants or mechanical joints |
joint connections are sealed using sealants or mechanical joints to prevent leakage according to manufacturers’ specifications, codes, standards and regulations |
| C-8.03.09P |
terminate air supply systems |
air supply systems are terminated according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes, bar folders, measuring tapes, notchers, rippers, seamers, stretchers, power tools, rigging equipment
- support materials include: hangers, brackets, braces
- 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), CEC, NBC, AHJ, NFPA, ANSI/ASME
- fasteners include: bolts, anchors, straps, screws, clamps
- preparing connectors includes: cleaning, priming, gluing, lubricating
- components include: locking bands, mechanical connections, terminations
- fittings include: tees, couplings, bends, caps, plugs, adapters
- connecting methods include:cementing, brazing, welding
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-8.03.01L |
demonstrate knowledge of air supply systems, their characteristics, applications and operation |
identify types of air supply systems, and describe their characteristics and applications |
| describe operating principles of air supply systems |
| interpret information pertaining to air supply systems found on drawings and manufacturers’ specifications |
| C-8.03.02L |
demonstrate knowledge of concepts and fundamentals relating to air supply systems |
describe concepts and fundamentals relating to combustion |
| explain how air supply affects combustion |
| define building as a system |
| describe draft and how it is created |
| describe combustion air supply methods |
| describe combustion, excess, dilution, relief, secondary and primary ventilation requirements and applications |
| describe sizing charts and calculations of combustion, excess, dilution, relief, secondary, primary and ventilation air |
| describe grille and louver sizing allowances and restrictions |
| explain calculations for conditions |
| describe characteristics of air |
| describe psychrometric characteristics and charts |
| describe air supply requirements for various appliance categories |
| C-8.03.03L |
demonstrate knowledge of procedures to install air supply systems |
identify tools and equipment used to install air supply systems, and describe their procedures for use |
| identify hazards and describe safe work practices to install air supply systems |
| describe procedures to install air supply systems |
| describe procedures to measure for support materials |
| C-8.03.04L |
demonstrate knowledge of regulatory requirements pertaining to air supply systems |
identify codes, standards and regulations pertaining to air supply systems |
Range of Variables
- types of air supply systems include: natural/passive, mechanical
- operating principles of air supply systems include: sizing, duct free area, fitting resistance, thermal traps, stack effects, grille/louver efficiency, building depressurization
- conditions include: free area, air volume
- characteristics of air include:humidity, dewpoint, relative density, temperature, composition
- appliance categories include: I, II, III and IV
- procedures to install air supply systems include: identifying, measuring and marking location of support materials; positioning and fastening support materials; preparing connectors for joining; mounting air supply systems on supports; connecting components and fittings; terminating air supply systems
- tools and equipment include: hacksaws, chop saws, plastic pipe cutters, tin snips, reamers, chamfers, crimpers, mitre boxes, bar folders, measuring tapes, notchers, rippers, seamers, stretchers, power tools, rigging equipment
- hazards include: repetitive movements, dust, exposed fibres, burrs, sparks, fumes, sharp edges, heavy lifting
- procedures to measure for support materials include: centre-to-centre, end-to-centre, end-to-end
- 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), CEC, NBC, AHJ, NFPA, ANSI/ASME
Task C-9 Selects and installs draft control systems
Task Descriptor
Gasfitters install draft control systems to maintain safe and efficient operation of gas appliances. In this task, draft control systems include draft hoods and diverters, barometric dampers (single and double-acting) and mechanical forced and induced draft control devices.
C-9.01 - Selects components for draft control systems
C-9.01 - Selects components for draft control systems
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
yes |
NV |
yes |
yes |
ND |
yes |
ND |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-9.01.01P |
determine location of draft control equipment and components |
location of draft control equipment and components is determined according to drawings, manufacturers’ specifications, best practices, codes, standards and regulations |
| C-9.01.02P |
select support materials |
support materials are selected according to job and manufacturers’ specifications, codes, standards and regulations |
| C-9.01.03P |
select draft control equipment and components |
draft control equipment and components are selected according to manufacturers’ specifications, codes, standards and regulations |
| C-9.01.04P |
select fasteners |
fasteners are selected according to manufacturers’ specifications, codes, standards and regulations |
Range of Variables
- components include: fans, blowers, motors, controls, pressure switches, dampers, gauges, flow indicators, conductors
- 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), NBC, AHJ, NFPA, ANSI/ASME
- support materials include: hangers, brackets, braces, strapping
- fasteners include: bolts, anchors, straps, screws, clamps
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-9.01.01L |
demonstrate knowledge of draft control systems, their components, characteristics, applications and operation |
identify types of natural draft control systems and their components, and describe their characteristics and applications |
| identify types of mechanical draft control systems and their components, and describe their characteristics and applications |
| describe operating principles of draft control systems |
| interpret information pertaining to draft control systems found on drawings and manufacturers’ specifications |
| define building as a system |
| describe draft and how it is created |
| describe combustion draft control methods |
| C-9.01.02L |
demonstrate knowledge of support materials and fasteners, their characteristics, applications and operation |
identify types of support materials and describe their characteristics and applications |
| identify types of fasteners and describe their characteristics and applications |
| interpret information pertaining to support materials and fasteners found on drawings and manufacturers’ specifications |
| C-9.01.03L |
demonstrate knowledge of procedures to select draft control systems |
describe procedures to select draft control systems |
| C-9.01.04L |
demonstrate knowledge of regulatory requirements pertaining to draft control systems |
identify codes, standards and regulations pertaining to draft control systems |
Range of Variables
- components include: fans, blowers, motors, controls, pressure switches, dampers, gauges, flow indicators, conductors
- natural draft control systems include: barometric dampers, draft hoods, draft diverters
- mechanical draft control systems include: induced, forced, balanced
- operating principles of draft control systems include: draft velocity, pressure, temperature
- support materials include: hangers, brackets, braces, strapping
- fasteners include: bolts, anchors, straps, screws, clamps
- procedures to select draft control systems include:determining location of draft control systems and components; selecting support materials, draft control equipment and components, and fasteners
- 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), NBC, AHJ, NFPA, ANSI/ASME
C-9.02 - Installs components for draft control systems
C-9.02 - Installs components for draft control systems
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
yes |
NV |
yes |
yes |
ND |
yes |
ND |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| C-9.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to task |
| C-9.02.02P |
identify, measure and mark location of support materials for draft control systems |
location of support materials for draft control systems are identified, measured and marked according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-9.02.03P |
position support materials for draft control systems |
support materials for draft control systems are positioned according to job and manufacturers’ specifications, and codes, standards and regulations |
| C-9.02.04P |
fasten support materials to structure |
support materials are fastened to structure using fasteners |
| C-9.02.05P |
mount draft control system components on supports |
draft control system components are mounted on supports according to manufacturers’ specifications, codes, standards and regulations |
| C-9.02.06P |
prepare connectors for joining |
connectors are prepared for joining according to manufacturers’ specifications |
| C-9.02.07P |
connect components and fittings |
components and fittings are connected using connecting methods |
Range of Variables
- tools and equipment include: hand tools, power tools, lifting equipment, gauges
- support materials include: hangers, brackets, braces
- 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), NBC, AHJ, NFPA, ANSI/ASME
- fasteners include: bolts, anchors, straps, screws, clamps
- components include: fans, blowers, motors, controls, pressure switches, dampers, gauges, flow indicators, conductors
- preparing connectors includes: crimping, folding, fastening, drilling
- fittings include: tees, couplings, bends, caps, plugs, adapters
- connecting methods include:cementing, brazing, welding
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| C-9.02.01L |
demonstrate knowledge of draft control systems, their components, characteristics, applications and operation |
identify types of natural draft control systems and their components, and describe their characteristics and applications |
| identify types of mechanical draft control systems and their components, and describe their characteristics and applications |
| describe operating principles of draft control systems |
| C-9.02.02L |
demonstrate knowledge of procedures to install draft control systems and their components |
identify tools and equipment used to install draft control systemsand their components, and describe their procedures for use |
| identify hazards and describe safe work practices to install draft control systems |
| describe procedures to install draft control systems and their components |
| identify sizing calculations for draft control systems |
| identify procedures to test draft control systems and their components |
| C-9.02.03L |
demonstrate knowledge of regulatory requirements pertaining to draft control systems |
identify codes, standards and regulations pertaining to draft control systems |
Range of Variables
- components include: fans, blowers, motors, controls, pressure switches, dampers, gauges, flow indicators, conductors
- natural draft control systems include: barometric dampers, draft hoods, draft diverters
- mechanical draft control systems include: induced, forced, balanced
- operating principles of draft control systems include: draft velocity, pressure, temperature
- procedures to install draft control systems and their components include: identifying, measuring and marking location of support materials; positioning and fastening support materials; mounting draft control systems on supports; preparing connectors for joining; connecting components and fittings
- tools and equipment include: hand tools, power tools, lifting equipment, gauges
- hazards include: repetitive movements, dust, exposed fibres, burrs, sparks, fumes, sharp edges, heavy lifting, electrocution
- 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), NBC, AHJ, NFPA, ANSI/ASME