Global Changes: Lighting

Setting	Description
Design level calculation	When on, the design level calculation property can be changed globally for the selected rooms. The design level calculation can be globally changed to one of the following methods: New data – Used to select a new design level calculation method. The design level calculation method selected here is the design level calculation method the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by selecting a design level calculation method to omit from the global change. The design level calculation method selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same design level calculation method, the room is omitted from the global change when the Apply button is clicked.
Lighting level	When on, the lighting level (illuminance) property can be changed globally for the selected rooms. Illuminance refers to the measure of perceived power that comes from lights. Lighting level options are enabled by selecting Lighting Level from the Design level calculation options New data – Used to enter a new illuminance value. The illuminance value entered here is the illuminance the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering an illuminance value to omit from the global change. The illuminance value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same illuminance value, the room is omitted from the global change when the Apply button is clicked.
Watts per Floor Area	When on, the Watts per Floor Area property can be changed globally for the selected rooms. Watts per floor area refers to the measure of perceived power per square unit of area that comes from lights. Watts per Floor Area options are enabled by selecting Illumination per area from the Design level calculation options New data – Used to enter a new watts per floor area value. The watts per floor area value entered here is the watts per floor area the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a watts per floor area value to omit from the global change. The watts per floor area value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same watts per floor area value, the room is omitted from the global change when the Apply button is clicked.
Watts per Person	When on, the Watts per Person property can be changed globally for the selected rooms. Watts per person refers to the measure of perceived power per room occupant that comes from lights. Watts per Person options are enabled by selecting Illumination per person from the Design level calculation options New data – Used to enter a new watts per person value. The watts per person value entered here is the watts per person the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a watts per person value to omit from the global change. The watts per person value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same watts per person value, the room is omitted from the global change when the Apply button is clicked.
Number of fixtures	When on, the number of fixtures can be changed globally for the selected rooms. New data – Used to enter a new number of fixtures. The number of fixtures value entered here is the number of fixtures the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a number of fixtures value to omit from the global change. The number of fixtures value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same number of fixtures value, the room is omitted from the global change when the Apply button is clicked.
Schedule	When on, the lighting schedule can be changed globally for the selected rooms. New data – Lists the lighting schedules available in the project. The lighting schedule selected here is the lighting schedule the selected rooms will be globally changed to use when the Apply button is clicked. The same lighting schedule drop-down list is enabled when Restrict changes is checked. Restrict changes – When on, the changes can be restricted by selecting a lighting schedule to omit from the global change. The lighting schedule selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same lighting schedule, the room is omitted from the global change when the Apply button is clicked.
End use subcategory	When on, the end use subcategory property can be changed globally for the selected rooms. The end use subcategory refers to user-defined end-use categories, for instance, "Lighting Conditioned", "Lighting Unconditioned", etc. If no user defined end use category is present, the lights will be assigned to the end usage category General. New data – Used to select a new end use subcategory. The end use subcategory selected here is the end use subcategory the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by selecting an end use subcategory to omit from the global change. The end use subcategory selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same end use subcategory, the room is omitted from the global change when the Apply button is clicked.
Exemption	When on, the Exemption property can be changed globally for the selected rooms. Exemption refers to luminaires that are exempt from the power allowance requirements specified by the ASHRAE 90.1 standard. Although, most lighting power is subject to the requirements of the ASHRAE 90.1 standard, some lighting for specialized commercial and display purposes, such as outdoor manufacturing, retail display windows, televised sports lighting, theatrical productions, and lighting integral to medical equipment, is exempt. Also exempt are certain lighting systems or portions of systems required for emergency use. New data – Used to enter a new Exemption type. The Exemption type selected here is the Exemption the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by selecting an Exemption type to omit from the global change. The Exemption type selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Exemption type, the room is omitted from the global change when the Apply button is clicked.
Allowance	When on, the Allowance property can be changed globally for the selected rooms. Allowance refers to luminaires that qualify for additional lighting power allowances as specified by the ASHRAE 90.1 standard. An increase in the lighting power allowance is permitted in cases where lighting is installed in addition to the general lighting for the room or is used as display lighting. New data – Used to enter a new Allowance type. The Allowance type selected here is the Allowance the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by selecting an Allowance type to omit from the global change. The Allowance type selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Allowance type, the room is omitted from the global change when the Apply button is clicked.
Area	When on, the Area property can be changed globally for the selected rooms. The Area property defines the area the luminaires which qualify for additional lighting power allowances are to illuminate. The Area global change settings are astigmatically enabled when you enable the Allowance global change settings. New data – Used to enter a new area value. The area value entered here is the area value the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by selecting an area value to omit from the global change. The area value selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same area value, the room is omitted from the global change when the Apply button is clicked.
Luminaire category	When on, the lights or luminaires can be changed to belong to a certain category for the selected rooms. Luminaires add to gains in three ways; Through visible light, through heat or thermal radiation and through convection. The location of the lights relative to the ceiling (recessed, downlights or suspended) affects lighting gains as well. Each luminaire category affects the relative amounts of lighting gain. For instance, the total electric input to typical incandescent lights is converted to 10% visible radiation, 80% thermal radiation, and 10% convective gain. In contrast, the electric input to typical fluorescent lights is converted to 20% visible radiation, 20% thermal radiation, and 60% convective gain. New data – Lists the available luminaire categories. The luminaire category selected here is the luminaire category the selected rooms will be globally changed to use when the Apply button is clicked. The same luminaire category drop-down list is enabled when Restrict changes is checked. Restrict changes – When on, the changes can be restricted by selecting a luminaire category to omit from the global change. The luminaire category selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same luminaire category, the room is omitted from the global change when the Apply button is clicked.
Return air fraction	When on, the return air fraction property can be changed globally for the selected rooms. Return air fraction refers to the fraction of the heat from lights that is directly convected out of the room and into the zone return air (normally into a return plenum). New data – Used to enter a new return air fraction value. The return air fraction value entered here is the return air fraction the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a return air fraction value to omit from the global change. The return air fraction value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same return air fraction value, the room is omitted from the global change when the Apply button is clicked.
Fraction radiant	When on, the fraction radiant property can be changed globally for the selected rooms. Fraction radiant refers to the fraction of heat from the lights that goes into the room as long-wave (thermal) radiation. New data – Used to enter a new fraction radiant value. The fraction radiant value entered here is the fraction radiant the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a fraction radiant value to omit from the global change. The fraction radiant value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same fraction radiant value, the room is omitted from the global change when the Apply button is clicked.
Fraction visible	When on, the fraction visible property can be changed globally for the selected rooms. Fraction visible refers to the fraction of heat from the lighting component that goes into the room as visible (short-wave) radiation. New data – Used to enter a new fraction visible value. The fraction visible value entered here is the fraction visible the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a fraction visible value to omit from the global change. The fraction visible value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same fraction visible value, the room is omitted from the global change when the Apply button is clicked.
Fraction replaceable	When on, the fraction replaceable property can be changed globally for the selected rooms. Fraction replaceable refers to the maximum fraction of the lighting power that may be turned off and replaced with natural daylighting. New data – Used to enter a new fraction replaceable value. The fraction replaceable value entered here is the fraction replaceable the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a fraction replaceable value to omit from the global change. The fraction replaceable value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same fraction replaceable value, the room is omitted from the global change when the Apply button is clicked.
Return air fraction calculated from plenum temp.	When on, the Return air fraction calculated from plenum temp property can be changed globally for the selected rooms. New data – Used to enable/disable the Return air fraction calculated from plenum temp property. The state selected here is the state the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by selecting a state (enabled/disabled) to omit from the global change. The state selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same state, the room is omitted from the global change when the Apply button is clicked.
Return air fraction function of plenum temp. coeff. 1	When on, the Return air fraction function of plenum temp. coeff. 1 property can be changed globally for the selected rooms. The Return air fraction function of plenum temp. coeff. 1 is used along with the Return air fraction function of plenum temp. coeff. 2 property to calculate total return air fraction across ducted luminaires. New data – Used to enter a new Return air fraction function of plenum temp. coeff. 1 value. The Return air fraction function of plenum temp. coeff. 1 value entered here is the Return air fraction function of plenum temp. coeff. 1 the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a Return air fraction function of plenum temp. coeff. 1 value to omit from the global change. The Return air fraction function of plenum temp. coeff. 1 value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Return air fraction function of plenum temp. coeff. 1 value, the room is omitted from the global change when the Apply button is clicked.
Return air fraction function of plenum temp. coeff. 2	When on, the Return air fraction function of plenum temp. coeff. 2 property can be changed globally for the selected rooms. The Return air fraction function of plenum temp. coeff. 2 is used along with the Return air fraction function of plenum temp. coeff. 1 property to calculate total return air fraction across ducted luminaires. New data – Used to enter a new Return air fraction function of plenum temp. coeff. 2 value. The Return air fraction function of plenum temp. coeff. 2 value entered here is the Return air fraction function of plenum temp. coeff. 2 the selected rooms' design will be globally changed to when the Apply button is clicked. Restrict changes – When on, the changes can be restricted by entering a Return air fraction function of plenum temp. coeff. 2 value to omit from the global change. The Return air fraction function of plenum temp. coeff. 2 value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Return air fraction function of plenum temp. coeff. 2 value, the room is omitted from the global change when the Apply button is clicked.

Design level calculation

When on, the design level calculation property can be changed globally for the selected rooms. The design level calculation can be globally changed to one of the following methods:

New data – Used to select a new design level calculation method. The design level calculation method selected here is the design level calculation method the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by selecting a design level calculation method to omit from the global change. The design level calculation method selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same design level calculation method, the room is omitted from the global change when the Apply button is clicked.

Lighting level

When on, the lighting level (illuminance) property can be changed globally for the selected rooms. Illuminance refers to the measure of perceived power that comes from lights.

Lighting level options are enabled by selecting Lighting Level from the Design level calculation options

New data – Used to enter a new illuminance value. The illuminance value entered here is the illuminance the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering an illuminance value to omit from the global change. The illuminance value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same illuminance value, the room is omitted from the global change when the Apply button is clicked.

Watts per Floor Area

When on, the Watts per Floor Area property can be changed globally for the selected rooms. Watts per floor area refers to the measure of perceived power per square unit of area that comes from lights.

Watts per Floor Area options are enabled by selecting Illumination per area from the Design level calculation options

New data – Used to enter a new watts per floor area value. The watts per floor area value entered here is the watts per floor area the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a watts per floor area value to omit from the global change. The watts per floor area value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same watts per floor area value, the room is omitted from the global change when the Apply button is clicked.

Watts per Person

When on, the Watts per Person property can be changed globally for the selected rooms. Watts per person refers to the measure of perceived power per room occupant that comes from lights.

Watts per Person options are enabled by selecting Illumination per person from the Design level calculation options

New data – Used to enter a new watts per person value. The watts per person value entered here is the watts per person the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a watts per person value to omit from the global change. The watts per person value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same watts per person value, the room is omitted from the global change when the Apply button is clicked.

Number of fixtures

When on, the number of fixtures can be changed globally for the selected rooms.

New data – Used to enter a new number of fixtures. The number of fixtures value entered here is the number of fixtures the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a number of fixtures value to omit from the global change. The number of fixtures value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same number of fixtures value, the room is omitted from the global change when the Apply button is clicked.

Schedule

When on, the lighting schedule can be changed globally for the selected rooms.

New data – Lists the lighting schedules available in the project. The lighting schedule selected here is the lighting schedule the selected rooms will be globally changed to use when the Apply button is clicked. The same lighting schedule drop-down list is enabled when Restrict changes is checked.
Restrict changes – When on, the changes can be restricted by selecting a lighting schedule to omit from the global change. The lighting schedule selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same lighting schedule, the room is omitted from the global change when the Apply button is clicked.

End use subcategory

When on, the end use subcategory property can be changed globally for the selected rooms. The end use subcategory refers to user-defined end-use categories, for instance, "Lighting Conditioned", "Lighting Unconditioned", etc. If no user defined end use category is present, the lights will be assigned to the end usage category General.

New data – Used to select a new end use subcategory. The end use subcategory selected here is the end use subcategory the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by selecting an end use subcategory to omit from the global change. The end use subcategory selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same end use subcategory, the room is omitted from the global change when the Apply button is clicked.

Exemption

When on, the Exemption property can be changed globally for the selected rooms. Exemption refers to luminaires that are exempt from the power allowance requirements specified by the ASHRAE 90.1 standard. Although, most lighting power is subject to the requirements of the ASHRAE 90.1 standard, some lighting for specialized commercial and display purposes, such as outdoor manufacturing, retail display windows, televised sports lighting, theatrical productions, and lighting integral to medical equipment, is exempt. Also exempt are certain lighting systems or portions of systems required for emergency use.

New data – Used to enter a new Exemption type. The Exemption type selected here is the Exemption the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by selecting an Exemption type to omit from the global change. The Exemption type selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Exemption type, the room is omitted from the global change when the Apply button is clicked.

Allowance

When on, the Allowance property can be changed globally for the selected rooms. Allowance refers to luminaires that qualify for additional lighting power allowances as specified by the ASHRAE 90.1 standard. An increase in the lighting power allowance is permitted in cases where lighting is installed in addition to the general lighting for the room or is used as display lighting.

New data – Used to enter a new Allowance type. The Allowance type selected here is the Allowance the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by selecting an Allowance type to omit from the global change. The Allowance type selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Allowance type, the room is omitted from the global change when the Apply button is clicked.

Area

When on, the Area property can be changed globally for the selected rooms. The Area property defines the area the luminaires which qualify for additional lighting power allowances are to illuminate. The Area global change settings are astigmatically enabled when you enable the Allowance global change settings.

New data – Used to enter a new area value. The area value entered here is the area value the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by selecting an area value to omit from the global change. The area value selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same area value, the room is omitted from the global change when the Apply button is clicked.

Luminaire category

When on, the lights or luminaires can be changed to belong to a certain category for the selected rooms. Luminaires add to gains in three ways; Through visible light, through heat or thermal radiation and through convection. The location of the lights relative to the ceiling (recessed, downlights or suspended) affects lighting gains as well.

Each luminaire category affects the relative amounts of lighting gain. For instance, the total electric input to typical incandescent lights is converted to 10% visible radiation, 80% thermal radiation, and 10% convective gain. In contrast, the electric input to typical fluorescent lights is converted to 20% visible radiation, 20% thermal radiation, and 60% convective gain.

New data – Lists the available luminaire categories. The luminaire category selected here is the luminaire category the selected rooms will be globally changed to use when the Apply button is clicked. The same luminaire category drop-down list is enabled when Restrict changes is checked.
Restrict changes – When on, the changes can be restricted by selecting a luminaire category to omit from the global change. The luminaire category selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same luminaire category, the room is omitted from the global change when the Apply button is clicked.

Return air fraction

When on, the return air fraction property can be changed globally for the selected rooms. Return air fraction refers to the fraction of the heat from lights that is directly convected out of the room and into the zone return air (normally into a return plenum).

New data – Used to enter a new return air fraction value. The return air fraction value entered here is the return air fraction the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a return air fraction value to omit from the global change. The return air fraction value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same return air fraction value, the room is omitted from the global change when the Apply button is clicked.

Fraction radiant

When on, the fraction radiant property can be changed globally for the selected rooms. Fraction radiant refers to the fraction of heat from the lights that goes into the room as long-wave (thermal) radiation.

New data – Used to enter a new fraction radiant value. The fraction radiant value entered here is the fraction radiant the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a fraction radiant value to omit from the global change. The fraction radiant value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same fraction radiant value, the room is omitted from the global change when the Apply button is clicked.

Fraction visible

When on, the fraction visible property can be changed globally for the selected rooms. Fraction visible refers to the fraction of heat from the lighting component that goes into the room as visible (short-wave) radiation.

New data – Used to enter a new fraction visible value. The fraction visible value entered here is the fraction visible the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a fraction visible value to omit from the global change. The fraction visible value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same fraction visible value, the room is omitted from the global change when the Apply button is clicked.

Fraction replaceable

When on, the fraction replaceable property can be changed globally for the selected rooms. Fraction replaceable refers to the maximum fraction of the lighting power that may be turned off and replaced with natural daylighting.

New data – Used to enter a new fraction replaceable value. The fraction replaceable value entered here is the fraction replaceable the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a fraction replaceable value to omit from the global change. The fraction replaceable value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same fraction replaceable value, the room is omitted from the global change when the Apply button is clicked.

Return air fraction calculated from plenum temp.

When on, the Return air fraction calculated from plenum temp property can be changed globally for the selected rooms.

New data – Used to enable/disable the Return air fraction calculated from plenum temp property. The state selected here is the state the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by selecting a state (enabled/disabled) to omit from the global change. The state selected here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same state, the room is omitted from the global change when the Apply button is clicked.

Return air fraction function of plenum temp. coeff. 1

When on, the Return air fraction function of plenum temp. coeff. 1 property can be changed globally for the selected rooms. The Return air fraction function of plenum temp. coeff. 1 is used along with the Return air fraction function of plenum temp. coeff. 2 property to calculate total return air fraction across ducted luminaires.

New data – Used to enter a new Return air fraction function of plenum temp. coeff. 1 value. The Return air fraction function of plenum temp. coeff. 1 value entered here is the Return air fraction function of plenum temp. coeff. 1 the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a Return air fraction function of plenum temp. coeff. 1 value to omit from the global change. The Return air fraction function of plenum temp. coeff. 1 value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Return air fraction function of plenum temp. coeff. 1 value, the room is omitted from the global change when the Apply button is clicked.

Return air fraction function of plenum temp. coeff. 2

When on, the Return air fraction function of plenum temp. coeff. 2 property can be changed globally for the selected rooms. The Return air fraction function of plenum temp. coeff. 2 is used along with the Return air fraction function of plenum temp. coeff. 1 property to calculate total return air fraction across ducted luminaires.

New data – Used to enter a new Return air fraction function of plenum temp. coeff. 2 value. The Return air fraction function of plenum temp. coeff. 2 value entered here is the Return air fraction function of plenum temp. coeff. 2 the selected rooms' design will be globally changed to when the Apply button is clicked.
Restrict changes – When on, the changes can be restricted by entering a Return air fraction function of plenum temp. coeff. 2 value to omit from the global change. The Return air fraction function of plenum temp. coeff. 2 value entered here will be checked for in the selected rooms' existing lighting component properties. If the data check finds the same Return air fraction function of plenum temp. coeff. 2 value, the room is omitted from the global change when the Apply button is clicked.