Sustaining Together - PowerPoint Presentation

Sustaining Together Making Your BAS System Work for You

Talking Points Scheduling Alarm Management Equipment Warnings Background Timeline Northrup Auditorium – Built 1928

Background Nils Hasselmo Hall – Built 1996 220 Buildings $50 million annual utility budget BAS Systems Johnson Controls Honeywell Siemens Tridium Trane Automated Logic 24 million square feet 900+ BACnet /IP controllers 25,000+ field controllers Nils Hasselmo President from 1988-1997 Known for commitment to undergraduate education.

Timeline Jones Hall – Built 1901 Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems Frederick Jones 1889, First Professor of PhysicsDean of College of Engineering

Timeline Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems 2003 – 2005 – Emergence of native BACnet DDC systems Phillips Wangensteen – Built 1974 Owen WangensteenChief of Surgery 1930-1967 at UofM Med School – Pioneered open heart surgery. Credited with saving over 1,000,000 lives!

Change to BACnet 2004

Change to BACnet

Timeline Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems 2003 – 2005 – Emergence of native BACnet DDC systems 2006 – 2011 – System Upgrades Pilsbury Hall Built in 1889John S. Pilsbury8th Governor of Minnesotafrom 1876-1882.

TCF Bank Stadium - 2009 Science Teaching & Student Services - 2010 Medical BioSci Bldg - 2009 Translational Research - 2007 System Upgrades

JCI N2 Honeywell C-bus Siemens P1 TraneLegacy System Upgrades

Timeline Jones Hall – Built 1901 Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems 2003 – 2005 – Emergence of native BACnet DDC systems 2006– 2011 – System Upgrades 2012 – Present – Optimization

Optimization Weisman Art Museum – Built 1992 2012 – 2013 – Optimization Scheduling Alarm Management Equipment Warnings Frederick Weisman Philanthropist & art collector. He donated $3 million dollars to the UofM to establish this art museum.

Scheduling Eddy Hall – Built 1881 Over 1700 pieces of HVAC equipment running on time schedule. Weekly, we track scheduled hours and compare them to actual runtime. If there’s a delta, we investigate. If you can’t shut the fans off, consider reducing the static pressure or slowing down the fan by 10-15% over night. Henry Eddy – Math professor, Civil Engineer and dean of college of engineering. Eddy Hall is the oldest Building on campus.

Scheduling ~8% ~70% Looks for fans not running the amount of hours they are scheduled. VFD Speed HP Schedule Variance Report

Scheduling Over 1700 pieces of HVAC equipment running on time schedule. Weekly, we track scheduled hours and compare them to actual runtime. If there’s a delta, we investigate. If you can’t shut the fans off, consider reducing the static pressure or slowing down the fan by 10-15% over night.

Scheduling Static Pressure Setpoint Static Pressure Reset Schedule Fan Speed Reduction Schedules Should see bell W curves every day.

Scheduling Static Pressure Setpoint Static Pressure Reset Schedule Fan Speed Reduction Schedules No bell W curve. Flat-line.

Scheduling Eddy Hall – Built 1881 ~80% ~70% Savings will vary based on the fan size, but there will be savings . VFD Speed Static Pressure Schedule Fan Speed Reduction Schedules

Alarming Smart Alarming CRITICAL ALARMS -Alarms that require immediate alert & action. HVAC ALARMS -Alarms that can be prioritized & backlogged. WARNING ALARMS -Alarms that indicate maximum analog effort.

Alarming Donhowe Building – Built 1924 Smart Alarming CRITICAL ALARMS -Alarms that require immediate alert & action. Safety trips, command/status mismatches, critical temperature limits, etc.

Alarming Folwell Hall – Built 1906 Cost to build: $416,000 2012 cost to remodel: $34,500,000 Smart Alarming Unreliable points, setpoint drift, all room temps deemed ‘non-critical’ spaces, other points that do not require immediate dispatch. HVAC ALARMS-Alarms that can be prioritized & backlogged.

Alarming SE Steam Plant Built in 1902 Provides steam to all of Minneapolis campus buildings . Smart Alarming Discharge Air Temp- Setpoint = 55˚ HVAC ALARMS-Alarms that can be prioritized & backlogged. High Alarm Limit = 65˚ Low Alarm Limit = 45˚ 10˚ bracket Discharge Air Temp- Setpoint = 60˚ High Alarm Limit = 70˚ Low Alarm Limit = 50˚ 10˚ bracket 10-10 Rule! 10 minute Alarm Delay

Alarming Washington Ave. Bridge Pedestrian bridge will have light rail trains running across it in 2014 . Smart Alarming Static Pressure Setpoint = 1.0 in wc HVAC ALARMS-Alarms that can be prioritized & backlogged. High Alarm Limit = 1.3 in wc Low Alarm Limit = 0.7 in wc 0.3” bracket

Alarming Mariucci Arena Built in 1993 – Home of Gopher Hockey Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. WARNING ALARMS -Alarms that indicate maximum analog output effort. Reheat Valves not working properly Unattainable airflow settings

Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. VFD at 100% No Static Pressure Static Pressure Alarm Limits

Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. VAV Damper is at 100% ~1000 cfm short of setpoint.

Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. Just Data!

Alarming Focus Lists Using database queries on the alarm database, alarm statistics can be pulled to provide a targeted list of unhealthy behaviors. Heating valves should not fully open 700-800 times per week during July.

Review Moos Tower Built in 1970 Costs nearly $500K per month to operate! Proprietary PneumaticsOpen ProtocolDDC ControlsIntegrateOptimize2003 2011 Consulting Firms

Continuous Commissioning Keep fans running at or below scheduled hours. Only get alerted for really important critical alarms. Reduce fan speeds &/or widen setpoints for a few hours every night. Run reports to collect high frequency non-critical alarms & plan to address a couple items per week. Keep track of analog outputs that are often at 100% effort.

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