Part 12

(1) The scope of this Part shall be as described in Subsection 1.1.2. of Division A.

(1) This Part applies to resource conservation in the design and construction of buildings.

(1) Sentences (2) to (5) apply to construction for which a permit has been applied for before January 1, 2012.

(2) Except as provided in Sentences (3) and (5) and permitted in Sentence (4), the energy efficiency of all buildings shall be designed to good engineering practice such as described in,

(a) the ANSI/ASHRAE/IESNA 90.1, “Energy Efficient Design of New Buildings Except Lowrise Residential Buildings” and Supplementary Standard SB-10, or

(b) the Model National Energy Code for Buildings and Supplementary Standard SB-10.

(3) The energy efficiency of a building or part of a building of residential occupancy that is within the scope of Part 9 and is intended for occupancy on a continuing basis during the winter months shall,

(a) conform to the thermal insulation requirements of Subsection 12.3.2.,

(b) conform to the thermal design requirements of Subsection 12.3.3., or

(c) provide a rating of 80 or more when evaluated in accordance with NRCan “EnerGuide for New Houses: Administrative and Technical Procedures”

(4) The energy efficiency of a building or part of a building may conform to the design requirements of Subsection 12.3.4. if the building or part of the building,

(a) is within the scope of Part 9,

(b) does not contain a residential occupancy,

(c) does not use electric space heating, and

(d) is intended for occupancy on a continuing basis during the winter months.

(5) Sentence (1) does not apply to,

(a) farm buildings, and

(b) buildings intended primarily for manufacturing or commercial or industrial processing.

(1) Sentences (2) to (5) apply to construction for which a permit has been applied for after December 31, 2011.

(2) Except as provided in Sentences (3) and (5), the energy efficiency of all buildings shall be designed to exceed by not less than 25% the energy efficiency levels attained by conforming to the Model National Energy Code for Buildings.

(3) The energy efficiency of a building or part of a building of residential occupancy that is within the scope of Part 9 and is intended for occupancy on a continuing basis during the winter months shall meet the performance level that is equal to a rating of 80 or more when evaluated in accordance with NRCan “EnerGuide for New Houses: Administrative and Technical Procedures”.

(4) Reserved

(5) Sentence (1) does not apply to,

(a) farm buildings, and

(b) buildings intended primarily for manufacturing or commercial or industrial processing.

(1) Lighting installed to provide the minimum illumination levels required by this Code may be controlled by motion sensors except where the lighting

(a) is installed in an exit,

(b) is installed in a corridor serving patients or residents in a Group B, Division 2 or Division 3 occupancy, or

(c) is required to conform to Sentence 3.2.7.1.(5).

(2) Where motion sensors are used to control minimum lighting in a public corridor or corridor providing access to exit for the public, the motion sensors shall be installed with switch controllers equipped for fail-safe operation and illumination timers set for a minimum 15-minute duration.

(3) A motion sensor shall not be used to control emergency lighting.

(1) Except as provided in Sentence (2), this Section applies to the energy efficiency of buildings within the scope of Part 9 intended for occupancy on a continuing basis during the winter months.

(2) This Section does not apply to,

(a) farm buildings, and

(b) areas of buildings intended primarily for manufacturing or commercial or industrial processing.

(1) The minimum annual fuel utilization efficiency of a furnace serving a building of residential occupancy shall conform to Table 12.3.1.2.

(1) The energy rating and the overall coefficient of heat transfer required for windows and sliding glass doors in a residential occupancy shall be determined in conformance with CAN/CSA-A440.2, “Energy Performance Evaluation of Windows and Sliding Glass Doors”.

(1) All walls, ceilings, floors, windows and doors that separate heated space from unheated space, the exterior air or the exterior soil shall have thermal resistance ratings conforming to this Subsection.

(2) Insulation shall be provided between heated and unheated spaces and between heated spaces and the exterior, and around the perimeter of concrete slabs-on-ground.

(3) Reflective surfaces of insulating materials shall not be considered in calculating the thermal resistance of building assemblies.

(4) Except as permitted in Articles 12.3.2.3., 12.3.2.4., 12.3.2.6., 12.3.2.7. and 12.3.2.9., the minimum thermal resistance of insulation shall conform to Table 12.3.2.1.

(1) Except for a foundation wall, the insulated portion of a wall that incorporates wood stud framing elements that have a thermal resistance of less than RSI 0.90 shall be insulated to restrict heat flow through the studs by a material providing a thermal resistance at least equal to 25 per cent of the thermal resistance required for the insulated portion of the assembly in Sentence 12.3.2.1.(4).

(2) Except as provided in Sentence (3), the thermal resistance of the insulated portion of a building assembly in Sentence 12.3.2.1.(4) that incorporates metal framing elements, such as steel studs and steel joists, that act as thermal bridges to facilitate heat flow through the assembly, shall be 20 per cent greater than the values shown in Table 12.3.2.1., unless it can be shown that the heat flow is not greater than the heat flow through a wood frame assembly of the same thickness.

(3) Sentence (2) does not apply to building assemblies incorporating thermal bridges where the thermal bridges are insulated to restrict heat flow through the thermal bridges by a material providing a thermal resistance at least equal to 25 per cent of the thermal resistance required for the insulated portion of the assembly in Sentence 12.3.2.1.(4).

(1) The thermal resistance values in Table 12.3.2.1. for exposed roofs or ceilings may be reduced near eaves to the extent made necessary by the roof slope and required ventilation clearances, except that the thermal resistance of insulation at the location directly above the inner surface of the exterior wall shall be at least RSI 2.1.

(1) Sentence (2) applies to construction for which a permit has been applied for before January 1, 2009.

(2) Foundation walls enclosing heated space shall be insulated from the underside of the subfloor to not less than 600 mm below the adjacent exterior ground level.

(3) Sentence (4) applies to construction for which a permit has been applied for after December 31, 2008.

(4) Foundation walls enclosing heated space shall be insulated from the underside of the subfloor to not more than 380 mm above the finished floor level of the basement.

(5) The insulation required by Sentences (2) and (4) may be provided by a system installed,

(a) on the interior of the foundation wall,

(b) on the exterior face of the foundation wall, or

(c) partially on the interior and partially on the exterior, provided the thermal performance of the system is equivalent to that permitted in Clauses (a) or (b).

(6) Insulation around concrete slabs-on-ground shall extend not less than 600 mm below exterior ground level.

(7) The minimum RSI value required in Table 12.3.2.1. for the perimeter of a slab-on-ground is permitted to be reduced by 50% if the underside of the entire slab-on-ground is insulated.

(8) If a foundation wall is constructed of hollow masonry units, one or more of the following shall be used to control convection currents in the core spaces,

(a) filling the core spaces,

(b) at least one row of semi-solid blocks at or below grade, or

(c) other similar methods.

(9) Masonry walls of hollow units that penetrate the ceiling shall be sealed at or near the ceiling adjacent to the roof space to prevent air within the voids from entering the attic or roof space by,

(a) capping with masonry units without voids, or

(b) installation of flashing material extending across the full width of the masonry.

(1) Where an enclosed unheated space is separated from a heated space by glazing, the unheated enclosure may be considered to provide a thermal resistance of RSI 0.16.

(1) Except as permitted in Sentence (2), all windows that separate heated space from unheated space shall have,

(a) an overall coefficient of heat transfer of not more than 2.0 W/ m²∙°C, or

(b) an energy rating of not less than,

(i) 17 for operable windows, and

(ii) 27 for fixed windows.

(2) A basement window that incorporates a loadbearing structural frame shall be double glazed with a low-E coating.

(1) Except for doors on enclosed unheated vestibules and cold cellars, and except for glazed portions of doors, all doors that separate heated space from unheated space shall have a thermal resistance of not less than RSI 0.7 where a storm door is not provided.

(2) All sliding glass doors that separate heated space from unheated space shall have

(a) an overall coefficient of heat transfer of not more than 2.0 W/ m²∙°C, or

(b) an energy rating of not less than 17.

(1) When electric space heating is used in a dwelling unit, all sliding glass doors that separate heated space from unheated space or the outdoors shall have,

(a) an overall coefficient of heat transfer of not more than 1.6 W/ m²∙°C, or

(b) an energy rating of not less than 25.

(2) When electric space heating is used in a dwelling unit, all windows that separate heated space from unheated space or the outdoors shall have,

(a) an overall coefficient of heat transfer of not more than 1.6 W/ m²∙°C, or

(b) an energy rating of not less than,

(i) 25 for operable windows, and

(ii) 35 for fixed windows.

(1) Except as provided in Sentences (2) and (3), log wall construction and post, beam and plank construction shall have a minimum thermal resistance of RSI 2.1 for the total assembly.

(2) The thermal resistance value in Sentence (1) for the total wall assembly may be reduced to not less than RSI 1.61 if,

(a) the thermal resistance of insulation for the exposed roof or ceiling required in Table 12.3.2.1. is increased by an amount equivalent to the reduction permitted in this Sentence, and

(b) for log walls, the logs have tongue-and-groove or splined joints.

(3) Where milled log walls are installed, the thermal resistance value in Sentence (1) for the total wall assembly does not apply if,

(a) the mean thickness of each log is not less than 150 mm,

(b) the thermal resistance of insulation for the exposed roof or ceiling required in Table 12.3.2.1. is increased by RSI 0.53, and

(c) the logs have tongue-and-groove or splined joints.

(1) This Subsection applies to the thermal design of buildings to which Clause 12.2.1.1.(3)(b)v1v2 applies.

(1) The materials for, and the installation of, thermal insulation and vapour barrier protection shall conform to Section 9.25.

(2) Foamed plastic thermal insulation shall be protected as described in Article 9.10.17.10.v1

(3) Crawl spaces shall conform to Section 9.18.

(4) Roof spaces shall conform to Section 9.19.

(5) Ventilation requirements shall conform to Section 9.32.

(6) Heating and air-conditioning requirements shall conform to Section 9.33.

(1) Except as provided in Articles 12.3.3.4. to 12.3.3.8., and except for doors, windows, skylights and other closures, the thermal resistance of each building assembly through any portion that does not include framing or furring shall conform to Table 12.3.3.3.

(1) Except as provided in Article 12.3.3.5., the thermal resistance of the insulated portion of a building assembly that incorporates metal framing elements, such as steel studs and steel joists, that act as thermal bridges to facilitate heat flow through the assembly, shall be 20 per cent greater than the values shown in Table 12.3.3.3., unless it can be shown that the heat flow is not greater than the heat flow through a wood frame assembly of the same thickness.

(1) Article 12.3.3.4. does not apply for building assemblies incorporating thermal bridges where the thermal bridges are insulated to restrict heat flow through the thermal bridges by a material providing a thermal resistance at least equal to 25 per cent of the thermal resistance required for the insulated portion of the assembly in Article 12.3.3.3.

(1) The thermal resistance of a building assembly may be reduced by not more than 20 per cent from that required in Articles 12.3.3.3. and 12.3.3.4., and the amount of glazing may be increased to more than permitted in Sentence 12.3.3.11.(2), where it can be shown that the total calculated heat loss from the building enclosure does not exceed the heat loss that would result if the enclosure were constructed in conformance with the minimum thermal resistance requirements in Articles 12.3.3.3. and 12.3.3.4. and with the maximum amount of glazing permitted in Sentence 12.3.3.11.(2), provided no allowance is made for solar heat gains or for the orientation of the glazing as described in Sentence 12.3.3.11.(4).

(1) The thermal resistance values in Articles 12.3.3.3. and 12.3.3.4. for roof or ceiling assemblies that separate heated space from unheated space or the exterior may be reduced near the eaves to the extent made necessary by the roof slope and required ventilation clearances, except that the thermal resistance at the location directly above the inner surface of the exterior wall shall be at least 2.1 m²∙°C/W.

(1) The thermal resistance values required in Article 12.3.3.3. may be reduced to take into account the effect of thermal inertia resulting from the mass of the building in conformance with DBR Building Research Note No. 126, “Relation Between Thermal Resistance and Heat Storage in Building Enclosures”.

(1) Sentence (2) applies to construction for which a permit has been applied for before January 1, 2009.

(2) Foundation walls enclosing heated space shall be insulated from the underside of the subfloor to not less than 600 mm below the adjacent exterior ground level.

(3) Sentence (4) applies to construction for which a permit has been applied for after December 31, 2008.

(4) Foundation walls enclosing heated space shall be insulated from the underside of the subfloor to not more than 380 mm above the finished floor level of the basement.

(5) Insulation applied to the exterior of a slab-on-ground floor shall extend down at least 600 mm below the adjacent exterior ground level or shall extend down and outward from the floor or wall for a total distance of at least 600 mm measured from the adjacent finished ground level.

(1) Where an enclosed unheated space, such as a sun porch, enclosed verandah or vestibule, is separated from a heated space by glazing, the unheated enclosure may be considered to provide thermal resistance of 0.16 m²∙°C/W, or the equivalent of one layer of glazing.

(1) Except as provided in Sentences (2) and (3), windows and all glazing that separates heated space from unheated space or the exterior shall conform to Articles 12.3.2.6. and 12.3.2.8.

(2) Except as provided in Sentences (3) and (4), the total area of glazing, including glazing for doors and skylights, that separates heated space from unheated space or the exterior shall not exceed 20 per cent of the floor area of the storey served by the glazed areas and shall not exceed 40 per cent of the total area of the walls of that storey that separates heated space from unheated space or the exterior. (In the case of a sloping wall, the area of the opaque portion of the wall is calculated as its projected area on a vertical plane.)

(3) Where the thermal resistance of glazing is different from that required in Sentence (1) and Article 12.3.3.10., the area of such glazing for the purpose of applying Sentence (2) may be assumed as being equal to the actual area multiplied by the ratio of the required thermal resistance divided by the actual thermal resistance of the glazing.

(4) Except as provided in Sentence (5), the area of glazing that contains clear glass or that has a shading coefficient of more than 0.70 that is unshaded in the winter and faces a direction within 45° of due South may be assumed to be 50 per cent of its unshaded area in calculating the maximum area of glazing in Sentences (2) and (3) provided the building is designed with a system that is capable of distributing the solar heat gain from such glazed areas throughout the building. For the purpose of determining whether or not the glazing is shaded in the winter, the shading shall be calculated using the noon sun angles of December 21.

(5) Sentence (4) shall not apply where the building is designed to be cooled unless the glazing described in Sentence (4) is shaded in the summer with exterior devices. For the purpose of determining whether or not the glazing is shaded in the summer, the shading shall be calculated using the noon sun angles of June 21.

(1) Air curtains shall not be used in place of exterior doors.

(2) Except for doors used primarily to facilitate the movement of vehicles or handling of material, infiltration around doors shall conform to the appropriate requirements in Article 12.3.3.13.

(3) Except for doors on enclosed unheated vestibules, all doors that separate heated space from the outside shall conform to Articles 12.3.2.7. and 12.3.2.8.

(1) Windows that separate heated space from unheated space or the exterior shall be designed to limit the rate of air infiltration to not more than 0.775 L/s for each metre of sash crack when tested at pressure differential of 75 Pa in conformance with ASTM E283, “Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen”.

(2) Manually operated exterior sliding glass door assemblies that separate heated space from unheated space or the exterior shall be designed to limit air infiltration to not more than 2.5 L/s for each square metre of door area when tested in conformance with Sentence (1).

(3) Except where the door is weather-stripped on all edges and protected with a storm door or by an enclosed unheated space, exterior swing type door assemblies for dwelling units, individually rented hotel rooms and suites shall be designed to limit the rate of air infiltration to not more than 6.35 L/s for each square metre of door area when tested in conformance with Sentence (1).

(4) Door assemblies other than those described in Sentences (2) and (3), that separate heated space from unheated space or the exterior shall be designed to limit the rate of air infiltration to not more than 17.0 L/s for each metre of door crack when tested in conformance with Sentence (1).

(5) Caulking material to reduce air infiltration shall conform to the requirements in Subsection 9.27.4.

(6) The junction between the sill plate and the foundation, joints between exterior wall panels and any other location where there is a possibility of air leakage into heated spaces in a building through the exterior walls, such as at utility service entrances, shall be caulked, gasketed or sealed to restrict such air leakage.

(7) Air leakage between heated space and adjacent roof or attic space caused by the penetration of services shall be restricted in conformance with the requirements of Subsection 9.25.3.v1

(1) Except where exempted by Supplementary Standard SB-10, this Subsection applies to the energy efficiency of buildings or parts of buildings described in Sentence 12.2.1.1.(4)v1v2.

(1) Except as permitted in Sentences (2) and (3), the minimum thermal resistance of all walls, ceilings and floors that separate heated space from unheated space, the exterior air or the exterior soil shall conform to Table 12.3.4.2.A.

(2) Where the top of a foundation wall is less than 1 200 mm above the adjoining ground level, those portions of the foundation wall that are above ground may be insulated to the level required for the below grade portion of the foundation wall.

(3) The minimum thermal resistance of a slab-on-ground shall conform to Table 12.3.4.2.B.

(4) The maximum overall coefficient of heat transfer for windows that separate heated space from unheated space shall conform to Table 12.3.4.2.C.

(5) Except for swinging glass doors, the minimum thermal resistance of doors that separate heated space from unheated space shall be not less than RSI 0.7.

(1) Where a building component or assembly separates interior conditioned space from exterior space, interior space from ground or environmentally dissimilar interior spaces, the component or assembly shall contain an air barrier system conforming to the applicable requirements of Part 5 or Section 9.25.

(1) A heating, ventilating and air-conditioning system that serves more than one heating, ventilating and air-conditioning zone shall conform to Clauses 12.2.1.1.(2)(a)v1v2 or (b).

(2) Sentences (3) to (11) and Article 12.3.4.5. apply to a heating, ventilating and air-conditioning system that serves a single heating, ventilating and air-conditioning zone.

(3) The energy efficiency of equipment in a heating, ventilating and air-conditioning system that serves a single heating, ventilating and air-conditioning zone shall conform to Supplementary Standard SB-10.

(4) An air-conditioning system with a cooling capacity of 40 kW or more shall have an economizer,

(a) controlled by appropriate high limit shut-off control, and

(b) equipped with either barometric or powered relief sized to prevent excess pressurization of the building.

(5) Outdoor air dampers for economizer use shall be provided with blade and jamb seals.

(6) A heat recovery ventilator with a recovery effectiveness of 50% or more at the outside winter design temperature shall be provided where the quantity of the outdoor air supplied to the air duct distribution system is,

(a) more than 1 400 L/s, and

(b) more than 70% of the supply air quantity of the system.

(7) Where a heat recovery ventilator is installed, the system shall have provisions to bypass or control the heat recovery ventilator to permit operation of the air economizer.

(8) A heating, ventilating and air-conditioning system shall be controlled by a manual changeover or dual setpoint thermostat.

(9) Except for a system requiring continuous operation, a heating, ventilating and air-conditioning system that has a cooling or heating capacity greater than 4.4 kW and a supply fan motor rated for more than 0.5 kW shall be provided with a time clock that,

(a) is capable of starting and stopping the system under different schedules for seven different day-types per week,

(b) is capable of retaining programming and time setting during a loss of power for a period of 10 hours or more,

(c) includes an accessible manual override that allows temporary operation of the system for up to two hours,

(d) is capable of temperature setback down to 13°C during off-hours, and

(e) is capable of temperature setup to 32°C during off-hours.

(10) Where separate heating and cooling equipment serves the same temperature zone, thermostats shall be interlocked to prevent simultaneous heating and cooling.

(11) A heating, ventilating and air-conditioning system with a design supply air capacity greater than 5000 L/s shall have optimum start controls

(1) A duct or a plenum that is not protected by an insulated exterior wall or that is exposed to an unheated space shall be,

(a) sealed to a Class A seal level in accordance with the SMACNA, “HVAC Duct Construction Standards - Metal and Flexible”, to minimize air leakage, and

(b) insulated to provide a thermal resistance of not less than RSI 1.4.

(2) A supply or exhaust duct or plenum that is located in a conditioned space shall be sealed to a Class C seal level in accordance with the SMACNA, “HVAC Duct Construction Standards - Metal and Flexible”, to minimize air leakage.

(3) Except for piping within prefabricated equipment, piping used for steam, hot water heating or cooling shall be insulated in accordance with Table 12.3.4.5.

(4) Insulation exposed to weather shall be protected by a covering such as aluminum, sheet metal, painted canvas or plastic.

(5) An exhaust duct with a design capacity of more than 140 L/s on a heating, ventilating and air conditioning system that does not operate continuously shall be equipped with a gravity or motorized damper that will automatically shut when the system is not in operation.

(6) An air duct distribution system shall be balanced in the following sequence:

1. Minimize throttling losses.

2. If the fan is rated for more than 0.75 kW, adjust the fan speed to meet design flow conditions.

(7) A hydronic system shall be proportionately balanced to minimize throttling losses.

(1) Water heating equipment, hot water supply boilers used solely for heating potable water and hot water storage tanks shall meet the minimum efficiency values in Supplementary Standard SB-10.

(2) Domestic hot water heating piping shall be insulated in accordance with Table 12.3.4.5. if it is,

(a) recirculating system piping,

(b) located within the first 2.5 m of outlet piping in a constant temperature non-recirculating storage system,

(c) an inlet pipe located between the storage tank and a heat trap in a non-recirculating storage system, or

(d) a pipe that is externally heated by methods such as a heat trace or impedance heating.

(3) A hot water storage tank shall be provided with a temperature control to permit adjustment of the water storage temperature.

(4) An automatic time switch or other control that can be set to switch off the usage temperature maintenance system during extended periods when hot water is not required shall be installed in a domestic hot water system that is designed to maintain usage temperatures in hot water pipes such as recirculating hot water systems or heat trace.

(5) If a recirculating pump is used to maintain storage tank water temperature, the pump shall be equipped with a control to limit its operation to a period from the start of the heating cycle to a maximum of five minutes after the end of the heating cycle.

(6) In a washroom located in a public facility, a device shall be provided to control the maximum temperature of water delivered from a lavatory faucets to not more than 43°C.

(7) A vertical pipe riser that serves a storage water heater or a storage tank shall have heat traps on both the inlet and outlet piping as close as practical to the tank if,

(a) the riser is in a non-recirculating system, and

(b) the storage water heater or the storage tank does not have integral heat traps.

(8) A system that provides space heating and domestic water heating shall conform to Clauses 12.2.1.1.(2)(a)v1v2 or (b).

(1) Except as provided in Sentence (2), Articles 12.3.4.7. to 12.3.4.11. apply to,

(a) interior spaces of a building,

(b) exterior building features, including facades, illuminated roofs, architectural features, entrances, exits, loading docks and illuminated canopies, and

(c) exterior building ground lighting provided through the building’s electrical service.

(2) Articles 12.3.4.7. to 12.3.4.11. do not apply to emergency lighting that is automatically turned off during the normal use of the building.

(3) Fluorescent light ballasts shall meet or exceed the minimum ballast efficacy factors required by Supplementary Standard SB-10.

(4) Except as provided in Sentence (5), luminaires designed for use with one or three linear fluorescent lamps greater than 30 W each shall use two-lamp tandem-wired ballasts in place of single-lamp ballasts when two or more luminaires are in the same space and on the same control device.

(5) The tandem wiring required by Sentence (4) is not required for,

(a) recessed luminaires located more than 3 m apart, measured centre to centre,

(b) surface mounted or pendant luminaires that are not continuous,

(c) luminaires that use single-lamp high-frequency electronic ballasts,

(d) luminaires that use three-lamp high-frequency electronic or three-lamp electromagnetic ballasts, and

(e) luminaires on emergency circuits.

(1) The interior lighting power allowance for a building is the sum of the lighting power allowances, in watts, of all building area types and shall include all permanently installed general, task and furniture lighting systems and luminaires.

(2) The interior lighting power allowance shall be determined by multiplying the lighting power density given in Table 12.3.4.8. by the gross lighted areas of the building area type.

(3) The installed interior lighting power shall not exceed the interior lighting power allowance.

(4) Except as provided in Sentence (5), the installed interior lighting power shall include all power used by luminaires, including lamps, ballasts, current regulators and control devices.

(5) The following lighting equipment and applications shall not be considered when determining the installed interior lighting power or the interior lighting power allowance:

(a) lighting that is integral to equipment or instrumentation and is installed by its manufacturer,

(b) lighting specifically designed for use only during medical or dental procedures and lighting integral to medical equipment,

(c) lighting that is integral to both open and glass-enclosed refrigerator and freezer cases,

(d) lighting that is integral to food warming and food preparation equipment,

(e) lighting for plant growth or maintenance,

(f) lighting in spaces specifically designed for use by visually impaired persons,

(g) lighting in retail display windows if the display area is enclosed by ceiling-height partitions,

(h) lighting in interior spaces that have been specifically designated as a heritage building,

(i) lighting that is an integral part of advertising or directional signage,

(j) exit signs,

(k) lighting that is displayed for sale, and

(l) educational lighting demonstration systems.

(6) Trade-offs among building area types are permitted provided that the total installed interior lighting power does not exceed the interior lighting power allowance.

(1) Except as provided by Sentence (2), interior lighting in a building that exceeds 500 m² in building area shall be controlled with an automatic control device to shut off building lighting in all spaces.

(2) Sentence (1) does not apply to,

(a) lighting intended for 24-hour operation,

(b) emergency lighting, or

(c) lighting for spaces where an automatic shut-off would endanger safety or security

(3) The automatic control device required in Sentence (1) shall operate on,

(a) a scheduled basis using a time-of-day operated control device that turns lighting off at specific programmed times,

(b) an occupant sensor that shall turn lighting off within 30 minutes of an occupant leaving a space, or

(c) a signal from another control or alarm system that indicates the area is unoccupied.

(4) Where the automatic control device conforms to Clause 12.3.4.9.(3)(a), an independent program schedule shall be provided for each floor.

(5) Each space enclosed by partitions that extend to the ceiling shall have at least one control device to independently control the general lighting within the space.

(6) Each manual operated control device shall be readily accessible and located so the occupants can see the controlled lighting.

(7) Except as required by Sentences (8) and (9) and except for reasons of safety or security, an individual control device shall,

(a) be capable of being activated,

(i) either manually, or

(ii) automatically by sensing an occupant,

(b) control a floor area having an area not more than 240 m², and

(c) be capable of overriding at any time of-day scheduled shut-off control for not more than 4 h.

(8) Except in spaces with multi-scene control, a control device that automatically turns lighting off within 30 minutes of all occupants leaving a space shall be provided in,

(a) conference rooms,

(b) meeting rooms, and

(c) employee lunch and break rooms.

(9) A separate control device shall control,

(a) display lighting,

(b) accent lighting,

(c) case lighting,

(d) task lighting,

(e) non-visual lighting, and

(f) demonstration lighting.

(1) Except as provided in Sentence (2), this Article applies to exterior areas conforming to Sentence 12.3.4.7.(1).

(2) If the lighting is equipped with a control device independent of the control of other lighting, Sentence (1) does not apply to,

(a) specialized signal, directional, and marker lighting associated with transportation,

(b) advertising signage or directional signage,

(c) lighting integral to equipment or instrumentation and installed by its manufacturer,

(d) temporary lighting,

(e) lighting for industrial production, material handling, transportation sites, and associated storage areas, and

(f) lighting used to highlight features of public monuments and heritage buildings.

(3) The exterior lighting power allowance for the exterior areas appurtenant to a building shall be determined by multiplying the lighting power density given in Table 12.3.4.10. by the areas or lengths of lighted exterior spaces.

(4) The total exterior lighting power allowance for the exterior areas appurtenant to a building is the sum of the individual power allowances determined from Sentence (3) plus an additional unrestricted allowance of 5% of that sum.

(5) The installed exterior lighting power shall not exceed the exterior lighting power allowance.

(6) All exterior building grounds luminaires that operate at greater than 100 watts shall contain lamps having a minimum efficacy of 60 lm/W unless the luminaire is controlled by a motion sensor.

(1) Except as provided in Sentence (2), lighting for exterior applications shall have automatic controls capable of turning off exterior lighting when,

(a) sufficient daylight is available, or

(b) the lighting is not required during night time hours.

(2) Sentence (1) does not apply to,

(a) lighting for covered vehicle entrances or exits from a building,

(b) parking structures, and

(c) where required for safety, security, or eye adaptation.

(3) Lighting designated for dusk-to-dawn operation shall be controlled by a time switch or photosensor.

(4) Lighting not designated for dusk-to-dawn operation shall be controlled by a time switch.

(1) Electric motors shall conform to the efficiency levels in Supplementary Standard SB-10.

(1) All buildings shall conform to the water efficiency requirements of Subsection 7.6.4.

O. Reg. 350/06, Division B, Part 12.