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The Changing Environment of Building Automation

Bill Swan

Alerton

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The Need to Save EnergyDrivers

The Need to Save Energy

Drivers

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Saving Energy With Your BAS Primary References and Topics

Saving Energy With Your BAS

Primary Referencesand Topics

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USGBC 2009 Rating Systems & Ref. Guides LEED for Commercial Interiors LEED for Core & Shell LEED for Green Buildings: O&M LEED for New Construction LEED for Schools

Saving Energy With Your BAS Primary References and Topics

ASHRAE Standards ASHRAE 90.1-2007 ASHRAE 189.1P (3rd public review)

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Saving Energy With Your BAS Primary References and Topics

ASHRAE Advanced Energy Design Guides (30% reduction from ASHRAE 90.1-1999) Small Office Buildings Small Retail Buildings K-12 School Buildings

Other ASHRAE GreenGuide

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Saving Energy With Your BAS Primary References and Topics

Potable Water

Lighting

HVAC Controls

Hydronic Systems

Testing, Calibration and Cx

Metering, Measurement and Verification

Integrated Systems

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Saving Energy With Your BAS Potable Water

Potable Water (PW)

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Saving Energy With Your BASPotable Water

Issues: 7 – 8% of U.S. energy spent to treat and transport water Highest-quality PW used for low-quality purposes Fresh water sources limited and unequally distributed Increasing demand for water may outstrip sources

Strategy: Reduce potable water use Greywater re-use Rainwater harvesting A/C condensate collection Use collected water for

Flushing Irrigation Cooling tower make-up

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Saving Energy With Your BASPotable Water

The BAS contribution:

Monitor tank water level If empty, switch to municipal water

Control pump(s) Accumulate filter runtimes

Meter potable water usage Meter non-potable water usage

Monitor soil moisture sensors for irrigation

Other controls for cooling-tower water management

Note: Savings show up on water bills, not energy

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Saving Energy With Your BASPotable Water

Potable Water-Use Reduction

LEED-CI Required: 20% reduction

LEED-CS “

LEED-NC “

LEED-Schools “

LEED-CI Credit: (30%-40% reduction, 6-11 pts)

LEED-CS Credit: (30%-40% reduction, 2-4 pts)

LEED-NC “

LEED-Schools “

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Saving Energy With Your BASPotable Water

Water-Efficient Landscaping LEED-CI Credit: (50%-100% reduction, 2 or 4 pts) LEED-CS Credit: “ LEED-SchoolsCredit: “ LEED-EB Credit: (50%-100% reduction, 1-5 pts)

(1-5 pts) 50% to 100% reduction

Innovative Wastewater Technologies LEED-CI Credit: (50% less PW for sewage, 2 pts) LEED-CS Credit: “ LEED-NC Credit: “ LEED-SchoolsCredit: “

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Saving Energy With Your BASPotable Water

Stormwater (Design): Quantity Control LEED-CS Credit: (1 pt) LEED-EB Credit: “ LEED-NC Credit: “ LEED-SchoolsCredit: “ (+ extra credit)

Cooling Tower Water Management LEED-EB Credit: Chemical Management (1 pt) LEED-EB Credit: 50% non-PW (1 pt)

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Saving Energy With Your BASPotable Water

Metering, Measurement & Verification LEED-EB Credit: meter building and grounds (1 pt) 189.1P Meter building and grounds (6.3.3.1)

LEED-EB Credit: meter end-uses (1 pt) 189.1P Meter end uses (6.3.3.1)

189.1P Store meter data, issue reports (6.3.3.1)

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Saving Energy With Your BASPotable Water

Greywater:

Wastewater from showers, baths, non-food sinks Not “blackwater,” containing organic or toxic matter Defined by local health codes

Can only be held for a short time

Use where high ratio water demand nonpotable:potable Restaurants Laundries Hotels

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Saving Energy With Your BASPotable Water

Greywater re-use pluses: Less demand on municipal water supply Less demand on municipal sewage system Lower water costs

Greywater re-use minuses: High initial costs Ongoing maintenance costs

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Saving Energy With Your BASPotable Water

Rainwater and condensates: Rain collected from impermeable surfaces such as roofs

Pluses: Lower water costs Reduce or eliminate stormwater treatment & conveyance

Minuses: High initial costs Ongoing maintenance costs Local/state codes have jurisdiction

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Saving Energy With Your BAS Lighting

Lighting

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Saving Energy With Your BASLighting

Issues: ~11% of U.S. electricity for commercial building lighting* Lighting often left on when and where not needed Lighting not always optimal for occupants Excessive light to exterior causes light pollution

Strategies: Reduce lighting Turn lights off when not needed

Scheduling Occupancy sensors Individual controls Exterior lighting

Reduce lighting to minimum need Dimming Daylighting

* Source: U.S. Department of Energy

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Saving Energy With Your BASLighting

Turn unneeded lights off: Scheduling Use where occupancy times are regular and known Provide (individual) on-time overrides Provide (zone/room) off-time overrides with timeout Unify with the BAS/EMCS scheduling system

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Saving Energy With Your BASLighting

Turn unneeded lights off: Scheduling 90.1, “Automatic Lighting Shutoff” (9.4.1.1)

Shut off building lighting on a scheduled basis

90.1, “Space Control” (9.4.1.2)

Override of scheduled-off up to 4 hours allowed

189.1P, “Controls for Outdoor Lighting” (7.4.6.7)

Turn off 50+% (certain) exterior lighting “when not needed”

189.1P, “…Egress and Security Lighting” (7.4.6.4)

Lighting >5 W/m2 controlled by time switch

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Saving Energy With Your BASLighting

Turn unneeded lights off: Scheduling

“Light Pollution Reduction”:

Non-emergency lighting visible to exterior reduced 50+% Override up to 30 minutes okay

LEED-CI: Credit: (Reduce 11PM – 5 AM,1 pt) LEED-CS “ LEED-NC “ LEED-Schools “

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Saving Energy With Your BASLighting

Turn unneeded lights off: Scheduling

ASHRAE Advanced Energy Design Guides: AEDG – Small Office Buildings

EMCS “can be used to schedule… outdoor lighting…”

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Saving Energy With Your BASLighting

Turn unneeded lights off: Occupancy Sensors

Two basic types: Passive Infrared (PIR)

Direct view Ultrasonic

Indirect sensing (restrooms, etc.) May be sensitive to strong airflow

Sensors are optimized per application. Read the manufacturers’ literature!

Workspaces: Look-down ceiling sensor for small-motion work is best

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Saving Energy With Your BASLighting

Turn unneeded lights off: Occupancy Sensors

90.1, “Automatic Lighting Shutoff” (9.4.1.1)

Shut off lighting 30 minutes after space unoccupied

90.1, “Space Control” (9.4.1.2)

Shut off lighting 30 minutes after space unoccupied in classrooms, conference rooms, lunch & break rooms

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Saving Energy With Your BASLighting

Turn unneeded lights off: Occupancy Sensors

189.1P, “Occupancy Sensor Controls” (7.4.6.2)

Lists room types that shall have occupancy detectors Automatic and manual shutoff required Specifies dimming and daylighting operation

189.1P, “…Multi-Level Switching or Dimming” (7.4.6.3)

(Where and how occupancy sensors interact)

189.1P, “Manual-ON” Occupancy Sensors (7.4.6.6)

Occupancy sensors shall be manual-on/automatic-off

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Saving Energy With Your BASLighting

Turn unneeded lights off: Occupancy Sensors

“Light Pollution Reduction”:

Non-emergency lighting visible to exterior reduced 50+% Occupancy detector override up to 30 minutes okay

LEED-CI: Credit: (Reduce 11PM – 5 AM,1 pt) LEED-CS “ LEED-NC “ LEED-Schools “

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Saving Energy With Your BASLighting

Turn unneeded lights off: Occupancy Sensors

ASHRAE Advanced Energy Design Guides:

Small Office Buildings (& Small Retail)

Use manual-on/automatic-off sensors

In daylit spaces use manual-on sensors (+ task lamps)

In open-plan offices: Ceiling-mounted ultrasonic sensors Revert to manual-on after manual- or automatic-off

In private offices: IR wall-box sensors

Generally sensors should be medium to high sensitivity 15-minute delay to turnoff (lamp life vs. energy savings)

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Saving Energy With Your BASLighting

Turn unneeded lights off: Individual Controls

Individual controls gives control over workspace Greater satisfaction through better control Provide lower-energy task lighting

“Controllability of Systems, Lighting”: Individual controls for 90% (workspace) occupants Controls for shared multi-occupant spaces LEED-CI: Credit: (1 pt) LEED-EB: Credit: (50% occupants & shared, 1 pt) LEED-NC: Credit: (1 pt) LEED-Schools: Credit: (+ learning spaces, 1 pt)

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Saving Energy With Your BASLighting

Turn unneeded lights off: Exterior Lighting Dim and/or turn off exterior lighting when not needed

Building facades, parking lots, garages etc.

90.1, “Exterior Lighting Control” (9.4.1.3)

Lighting not for dusk-to-dawn operation controlled by: Combination of photosensor and time switch, or Astronomical time switch

189.1P, “Controls for Outdoor Lighting” (7.4.6.5 )

Continuous dimming at least 50% to 80% reduction, or 25% to 50% reduction of continuous-dimmed HID

sources

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Saving Energy With Your BASLighting

Turn unneeded lights off: Exterior Lighting

ASHRAE Advanced Energy Design Guides:

AEDG – Small Office Buildings

Use photocell or astronomical time switch

EMCS can schedule and manage outdoor lighting

When building unoccupied, turn off non-security lighting

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Saving Energy With Your BASLighting

Reduce lighting to minimum need: Daylighting Adjust lighting for desired levels in daylit zones Use photosensors to set lighting level

Pluses: Reduced energy costs (possibly 60+%) * Extends lighting maintenance cycle up to 3x *

Minuses: Increased initial cost Needs close architectural, structural and lighting design

* Source: ASHRAE GreenGuide

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Saving Energy With Your BASLighting

189.1P, “…Lighting in Daylight Zones” (7.4.6.5) Reduce lighting power in response to available daylight:

By continuous dimming, or Combined stepped switching and daylight sensing

Reduce lighting to minimum need: Daylighting

“…Energy Performance, Lighting Controls”: LEED-CI: Credit: (within daylight zones, 1 pt)

Credit: (50+% of connected load, 1 pt)

Credit: (75+ of connected load, 1 pt)

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Saving Energy With Your BASLighting

Reduce lighting to minimum need: Daylighting

ASHRAE Advanced Energy Design Guides:

AEDG – Small Office Buildings In offices, dim instead of switch to minimize distraction Switching may be used in non-office environment

Consider more switching levels than minimum Avoid checkerboard or non-uniform patterns

Sensor must be properly specified for situation

Sensor best installed in window frame or skylight well

Controls must be commissioned after furniture in place Most sensors require day- and night-time calibration Poor calibration can lead to permanent override

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Saving Energy With Your BASLighting

Reduce lighting to minimum need: Daylighting

ASHRAE Advanced Energy Design Guides:

AEDG – Small Retail In sales areas, dim instead of switch to minimize distraction Switching may be used in non-sales environment

Sensor best installed in skylight well

AEDG – K-12 Schools Sensor must be properly specified for situation Closed-loop sensor installed above unobstructed location Open-loop sensor best installed in skylight well Consider today’s requirements of video image projection

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Saving Energy With Your BAS HVAC Controls

HVAC Controls

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Saving Energy With Your BAS HVAC Controls

Issues: <25% of commercial building floor space has an EMCS *

Just 13 BAS faults account for 4-20% total energy use**

Strategy: Save energy by: Greater use of schedules and other means for shutdown Ventilate only as needed Use more efficient heating and cooling strategies Reducing equipment runtimes Efficiently unloading equipment Automated fault detection and diagnostic systems

* Source: Commercial Building Energy Consumption Survey (CBECS) 2003, Energy Information Administration

** Source: “Energy Impact of Commercial Building Controls and Performance Diagnostics,” TIAX LLC 11/2005

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Saving Energy With Your BAS HVAC Controls

Use Less Energy!

LEED-CI, “Optimize Energy Performance, HVAC”: 1. Install HVAC systems with specified efficiency

requirements (5 pts), with appropriate zoning and controls (5 pts).

2. Demonstrate HVAC component performance 15% (5 pts) or 30% (10 pts) better than 90.1-2007.

AEDG Small Office & Retail, “Control Strategies” Short summary of strategies including time-of-day

scheduling, setback temperatures, etc.

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Saving Energy With Your BAS HVAC Controls

Off-Hour Controls

90.1, “Automatic Shutdown”: (6.4.3.3.1)

HVAC systems shall have at least one of: Time schedules (7 days), 2 hour manual override Occupant sensor shutdown 30 minutes no occupancy Manually-operated timer up to 2 hours Shutdown on security system activation

90.1, “Off-hour controls”: (6.4.3.3)

HVAC systems shall comply with “Automatic Shutdown” “Setback Controls” “Optimum Start Controls,” and “Zone Isolation.”

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Saving Energy With Your BAS HVAC Controls

Off-Hour Controls

90.1, “Optimum Start Controls”: (6.4.3.3.3)

Heating and cooling systems > 10,000 cfm shall have optimum start controls.

90.1, “Setback Controls”: (6.4.3.3.2)

Heating systems in climate zones (2-8) shall be capable of maintaining zones at 55°F or lower.Cooling systems in (dry) climate zones 1b, 2b and 3b shall be capable of maintaining zones at 90°F or higher to prevent high humidity levels.

90.1, “Zone Isolation”: (6.4.3.3.4)

Zones to be operated or occupied non-simultaneously shall be isolated.

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Saving Energy With Your BAS HVAC Controls

Off-Hour Controls

90.1, “Shutoff Damper Controls”: (6.4.3.4.3)

Outdoor air supply and exhaust systems shall have motorized dampers that will shut when spaces served are not in use. (Exceptions for preoccupancy warm-up, cool down, code requirements, etc.)

90.1 summary: HVAC systems shall have:

Methods for automatic shutdown, Specific setback requirements depending on climate, Optimum Start capability, Isolation of zones used/occupied at different times, and Motorized dampers to be closed when spaces not used.

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Saving Energy With Your BAS HVAC Controls

CO2 Sensors

90.1, “…Controls for High-Occupancy Areas”: (6.4.3.9)

Demand-controlled ventilation (DCV) is required for spaces > 500 ft2 and 40+ people/1000 ft2 (and served by air-side economizer, modulating outdoor air damper, or outdoor airflow >3000 cfm).

189.1P, “…Controls for High-Occupancy Areas”: (7.4.3.2)

Supersedes 90.1 DCV requirements. DCV shall comply with ASHRAE 62.1.

189.1P, “Naturally-Ventilated Spaces”: (8.3.1.2.2)

Densely-occupied spaces require CO2 monitoring. (Installation details included.)

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Saving Energy With Your BAS HVAC Controls

CO2 Sensors 189.1P, “CO2 Sensors”: (8.3.1.2.3)

Installation details and requirements for CO2 sensors, including accuracy to ±50 ppm at 1000 ppm. Outdoor CO2 may be measured near outdoor air intake or assumed to be 400 ppm.

90.1-2007 and 189.1P summary: 90.1 requires DCV for high-occupancy areas. 189.1P supercedes 90.1 DCV requirements, specifies

CO2 sensor installation and requirements.

LEED-Schools, “Outdoor Air Delivery Monitoring”: Naturally ventilated and densely-occupied spaces (25+

people/1000 ft2) require CO2 monitoring. (1 pt)

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Saving Energy With Your BAS HVAC Controls

CO2 Sensors

AEDG Small Office, “Ventilation Air” DCV should be used in varying and high-occupancy

areas and may use CO2 sensors. See “Carbon Dioxide Sensors.”

AEDG Small Office & Retail, “Carbon Dioxide Sensors” Recommends sensor locations and density, and use of

multiple sensors. DCV should maintain CO2 at ≤ 600 ppm over outdoor CO2, but should not exceed limits set by code. Outdoor CO2 may be measured near outdoor air intake or assumed to be 400 ppm.

CO2 sensors should have an accuracy no less than 75 ppm.

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Saving Energy With Your BAS HVAC Controls

Ventilation Monitoring

LEED-Schools, “Outdoor Air Delivery Monitoring”: Monitor ventilation system performance, with alarms on

variance of 10% or more from design. (1 pt)

189.1P, “…Ventilated by Mechanical Systems”: (8.3.1.2.1)

In VAV systems direct total outdoor airflow to be monitored down to minimum outdoor airflow rate, with accuracy of 15% of minimum outdoor airflow rate.

Issue alarms when flow rates are not in compliance.

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Saving Energy With Your BAS HVAC Controls

Economizers

AEDG Small Office & Retail Buildings, “Economizers” Economizers, when recommended, help save energy...

Consider using enthalpy controls to avoid introducing unwanted moisture in hot, humid climates.

AEDG Small Office Buildings, “Ventilation Air” The systems should be capable of modulating the

outdoor air, return air and relief dampers to provide up to 100% of the design air supply quantity, using outdoor air for cooling.

90.1, “Design Capacity”: (6.5.1.1.1)

Air economizers shall be capable of modulating the outdoor air and return air dampers to provide up to 100% of the design air supply quantity, using outdoor air for cooling.

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Saving Energy With Your BAS HVAC Controls

No Unnecessary Heating

90.1, “Heat Pump Auxiliary Control”: (6.4.3.5)

Heat pumps with (supplemental) heaters shall have control to prevent supplemental heating when heat load can be met by the heat pump alone during steady-state operation and setback recovery. Supplemental heating is permitted during outdoor air defrost cycles.

90.1, “Humidifier Preheat”: (6.4.3.6)

Humidifiers with preheating jackets in the airstream shall shutoff preheat when humidification is not required.

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Saving Energy With Your BAS HVAC Controls

Individual Controls

“Controllability of Systems, Thermal Comfort”: Individual controls for 50% (workspace) occupants Controls for shared multi-occupant spaces LEED-CI: Credit: (1 pt) LEED-CS: “ LEED-NC: “ LEED-Schools: “

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Saving Energy With Your BAS HVAC Controls

Prevent Opposed Operations

90.1, “Humidification and Dehumidification”: (6.4.3.7) Prevent simultaneous operation of humidification and

dehumidification equipment.

90.1, “Zone Controls”: (6.5.2.1)

Zone controls shall … prevent reheating, recooling,mixing or simultaneously supplying air that is mechanically heated and air that has been cooled mechanically or by economizers, and other simultaneous heating and cooling.

90.1, “Dehumidification”: (6.4.2.3)

Humidification controls shall prevent mixing hot and cold airstreams, and simultaneous air stream heating and cooling.

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Saving Energy With Your BAS Hydronic Systems

Hydronic Systems

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Saving Energy With Your BAS Hydronic Systems

90.1, “Three-Pipe System”: (6.5.2.2.1)

A common return system for both hot and chilled water shall not be used.

90.1, “Two-Pipe Changeover System”: (6.5.2.2.2)

Common distribution for heated and chilled water may be used if:

Changeover deadband is ≥15°F outdoor air temp, System operates 4+ hours before changeover, and Heating and cooling supply temps ≤30°F at changeover.

90.1, “Hydronic … Heat Pump Systems”: (6.5.2.2.3)

Hydronic heat pumps with a common heat pump water loop with central heat rejection (e.g. cooling tower) and heat addition (e.g. boiler) shall have controls providing deadband ≥15°F between initiation of heat rejection and addition.

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Saving Energy With Your BAS Testing, Calibration, Cx

Testing, Calibration, Cx

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Saving Energy With Your BAS Testing, Calibration, Cx

Issues: “Commissioning can be broken down into five phases –

predesign, design, construction, acceptance, warranty/ continuous commissioning (or recommissioning).” – ASHRAE GreenGuide

“Case studies on commissioning show that construction and operating costs can be reduced from 1 to 70 times the initial cost of commissioning.” - ibid.

“Even a few days of occupancy with poorly calibrated controls can lead to permanent overriding of the system and the loss of all savings.” – AEDG Small Office Buildings

Strategy: Save energy by: Testing, Calibration and Commissioning

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Saving Energy With Your BAS Testing, Calibration, Cx

189.1P, “Systems”: (10.3.1.1.3)

The following systems shall have Acceptance Testing: HVAC, IAQ and refrigeration and associated controls Lighting: daylighting controls, occupancy, auto-shutoff Energy measurement devices Water measurement devices

189.1P, “Systems”: (10.3.1.2.4)

The following systems shall be commissioned: HVAC, IAQ and refrigeration and associated controls All lighting and shading controls Service water heating systems Energy measurement devices Water measurement devices

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Saving Energy With Your BAS Testing, Calibration, Cx

“Fundamental Commissioning…Energy Systems”: Designate Commissioning Authority (CxA) Develop, execute and document commissioning of:

HVAC system and associated controls Lighting controls, including daylighting Etc.

LEED-CI: Required LEED-CS: “ LEED-NC: “ LEED-Schools: “

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Saving Energy With Your BAS Testing, Calibration, Cx

“Enhanced Commissioning”: Additional activities for the CxA after system

performance verification is completed, in part to keep system running efficiently.

LEED-CI: Credit: (5 pts) LEED-CS: Credit: (2 pts) LEED-NC: “ LEED-Schools: “

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Saving Energy With Your BAS Testing, Calibration, Cx

AEDG Small Office & Small Retail Buildings, “Calibration and Commissioning” (daylighting) Even a few days of occupancy with poorly calibrated

controls can lead to permanent overriding of the system and the loss of all savings. - Most photosensors require daytime and nighttime calibration sessions. - The photosensor manufacturer and the QA provider should be involved in the calibration. - Document the calibration and Cx settings and calendar intervals for future calibration.

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Saving Energy With Your BAS Testing, Calibration, Cx

AEDG Small Office Buildings, “Filters” Replacement of dirty filters should correspond to filter

manufacturer’s recommendations. Use a filter differential gauge to monitor filter pressure drop; senmd an alarm when filter pressure exceeds predetermined pressure drop.

AEDG Small Office & Small Retail Buildings,

“CO2 Sensors” “Inaccurate CO2 sensors can cause excessive energy

consumption and poor air quality…” CO2 sensors should be … factory calibrated and calibrated periodically as recommended by the manufacturer.

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Saving Energy With Your BAS Testing, Calibration, Cx

AEDG Small Retail Buildings, “Economizers” “Periodic maintenance is important with economizers, as

dysfunctional economizers can cause substantial energy consumption due to malfunctioning dampers and/or sensors.”

AEDG Small Office Buildings, “Expanded Recommendations for Daylighting Controls” “All lighting controls musty be calibrated and

commissioned after the furniture is in place.”

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Saving Energy With Your BAS MM&V

Metering, Measurement, and Verification

(MM&V)

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Saving Energy With Your BAS MM&V

189.1P, “Meters” (water): (6.3.3.1)

Domestic water, both potable and reclaimed, entering the building shall be monitored or submetered.

189.1P, “Meter Data Collection” (water): (6.3.3.2)

All building meters, monitoring systems and submeters shall communicate water consumption data to a meter data management system. Meters shall record hourly and provide data daily, at a minimum.

189.1P, “Data Storage and retrieval” (water): (6.3.3.3)

Data management system shall be able to produce reports of hourly, daily, monthly and annual water consumption from each meter, and provide alarm capabilities.

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Saving Energy With Your BAS MM&V

189.1P, “Consumption Management” (energy): (7.3.3.1) Meters shall collect energy consumption data for each

building energy source and convey them to a data acquisition system.

189.1P, “Energy Consumption Data Collection”: (7.3.3.2)

All building meters shall communicate energy consumption data to a data acquisition system. Meters shall record hourly and provide data daily, at a minimum.

189.1P, “Data Storage and retrieval”: (7.3.3.3)

Data acquisition system shall be able to produce reports of hourly, daily, monthly and annual energy consumption from each meter.

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Saving Energy With Your BAS MM&V

“Measurement and Verification”: Submeter tenant energy usage, or, install continuous

metering for end uses. (LEED-NC & -Schools: Consider diagnostics for alarms on leaky valves, faulty controls, etc.)

LEED-CI: Credit: (2-5 pts) LEED-CS: Credit: (end use meter, 3 pts) LEED-CS: Credit: (tenant meter, 3 pts) LEED-NC: Credit: (end use meter, 3 pts) LEED-Schools: Credit: (end use meter, 3

pts)

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Saving Energy With Your BAS MM&V

“Minimum/Optimize Energy Efficiency Performance”: Meter all energy use. Points for additional meters. LEED-EB: Required: LEED-EB: Credit: (additional, 1-18 pts)

“Performance Measurement: System-Level Metering”: Have system level metering for 40+% (1 pt) or 80+% (2

pts) of building energy consumption. LEED-EB: Credit: (1 pt)

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Saving Energy With Your BAS MM&V

“Outdoor Air Delivery Monitoring”: Monitor ventilation system performance with alarms on

specified variance from design. LEED-CI: Credit: (10%,1 pt) LEED-CS: Credit: (10%, 1 pt) LEED-EB: Credit: (15%, 1 pt) LEED-NC: Credit: (15%, 1 pt) LEED-Schools: Credit: (10%, 1 pt)

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Saving Energy With Your BAS MM&V

“Water Performance Measurement”: Meter and record potable water use. Points for

additional meters. LEED-EB: Credit: (1 pt) LEED-EB: Credit: (additional, 1 pt)

“Thermal Comfort Monitoring”: Meter and record temperature and humidity every 15

minutes or less. Alarm on situations requiring adjustment or repair.

LEED-EB: Credit: (1 pt)

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Saving Energy With Your BAS MM&V

AEDG Small Retail Buildings, “Economizers” “Periodic maintenance is important with economizers, as

dysfunctional economizers can cause substantial energy consumption due to malfunctioning dampers and/or sensors.”

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Saving Energy With Your BAS Integrating Systems

Integrating Systems

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Saving Energy With Your BAS Integrating Systems

90.1, “Automatic Lighting Shutoff” (9.4.1.1)

Shut off building lighting on a signal from another alarm or control system that indicates the area is unoccupied.

189.1P, “Automatic Control of HVAC and Lights in Hotel/Motel Guest Rooms” (7.3.4.12)

Guest room lights, switched outlets and HVAC setback controlled by:

Room occupant control (key, card, etc), or Occupancy sensors.

AEDG Small Office Buildings, “(EL24 – no title)” “Turn off exterior lighting not designated for security

purposes when the building is unoccupied.”

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Saving Energy With Your BAS A Case Study

A Case Study

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Saving Energy With Your BAS Looking to the Future

Looking to the Future

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The Changing Environment of Building Automation

Thank you!

Bill SwanAlerton

“Ask not what you can do for your building automation system, Ask what your building automation system can do for you.”