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Building Operator Certification®

HESNI Annual Conference Aramark, Downers Grove, IL

May 2, 2013

Today’s Agenda

•  Learn about BOC – What is BOC? – Future training series

•  Economizers: Free Cooling – Presented by Michael Kuk

•  LEED AP BD+C, CPMP, OPMP, BEAP, CxA •  CERx Solutions

MEEA is a nonprofit organization bridging the gap between energy efficiency policy development and program implementation

Midwest Energy Efficiency Alliance

organization bridging the

development and program

Midwest Energy Efficiency Alliance

development and program

Midwest Energy Efficiency Alliance

MEEA Flagship Program: Building Operator Certification®

•  Offered in 9 states through license from NEEC

•  3,200 certified graduates since 2003 – Out of 11,000 nationwide

•  50+ partnerships – Utilities, state & local

governments, academic institutions

What is BOC?

•  Professional development program for building engineering & maintenance staff

•  Energy efficient operations and maintenance •  Level I and Level II certifications

– Technical training –  In-class examinations –  In-facility projects – Eligibility requirements – Annual continuing education & renewal Annual continuing education & renewal

Level I Certification BOC 1001 – Energy Efficient Operation of Building HVAC Systems (2 days) BOC 1002 – Measuring & Benchmarking Energy Performance BOC 1003 – Efficient Lighting Fundamentals BOC 1004 – HVAC Controls Fundamentals BOC 1005 – Indoor Environmental Quality BOC 1006 – Common Opportunities for Low-Cost Operational Improvement One Supplemental Course

74 hours of training 5 facility-based projects

700 pages of reference books

Level I Projects •  Facility floor plan •  Energy benchmarking •  HVAC controls

operational review •  Lighting survey •  Electrical distribution

plan

Level II Certification BOC 201 - Preventive Maintenance & Troubleshooting BOC 202 - Advanced Electrical Diagnostics (Project)

BOC 203 - HVAC Troubleshooting & Maintenance (2 days) (Project)

BOC 204 - HVAC Controls & Optimization (Project)

Two Supplemental Courses: Water Efficiency, Motors, Demand Reduction, Building Commissioning

61 hours of training 3 facility-based projects

600 pages of reference books

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Benefits for Building Operators

 Supports job retention & advancement – 90% of graduates believe BOC improves job

performance – Over 50% of graduates report increases both

in job responsibilities & compensation  Enhances job marketability

– Over 75% of interviewed employers view BOC positively when reviewing resumes

Benefits for Businesses

 Achieve energy savings without capital investment –  Immediate payback on BOC investment

 Recruit & retain qualified building staff  Increase building occupant comfort  Prolong building equipment life

BOC-trained Operators Achieve Energy Savings

*Uses Midwest weighted average retail commercial energy prices Evaluations conducted by Navigant Consulting View full reports at www.boccentral.org

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Illinois BOC Veterans Pilot

•  IL DCEO State Energy Office, MEEA, & state and local veteran and workforce agencies – 2012 Commitment to Clinton Global Initiative

•  Recruit qualified unemployed vets •  Enhance skills & job marketability through

BOC certification and mentoring •  Place into building O&M jobs

Pilot Progress •  Springfield BOC Aug – Nov 2012

– 16 veterans recruited, 4 enrolled  3 earned certification, 2 seeking employment

– 3 mentors •  DuPage County BOC Feb – May 2012

– 9 veterans recruited, 4 enrolled  3 earned certification, 2 seeking employment

– 3 mentors •  Ongoing employer outreach

Featured BOC Certified Veterans •  Michael Wright, U.S. Army Veteran

–  Past HVAC/R Technician for All Seasons Mechanical, Springfield, IL

–  Completed HVAC/R Universal Technician Program at Richland Community College, IL

–  Holds BOC Level I

•  Hector Ayala, U.S. Marine Corps Veteran –  Past Maintenance Supervisor/Operations Manager,

U.S. Marine Corps (domestic & intl locations) –  B.S. Management/CIS, Park University, MO –  Applying BOC Level I

Upcoming Series •  Level I

•  Chicago - September 2013 •  Peoria – September 2013 •  Carbondale – October 2013

•  Level II •  Chicago – September 2013 •  Springfield – September 2013

•  DCEO and Utility Rebates

Wanted: BOC Instructors •  3+ years experience

instructing working professionals in O&M or related field

•  2+ years employment in field or industry related to training topic(s)

•  Bachelor's degree (or equivalent)

•  2+ references

Contact Information Eric Roach

Sr. Program Associate Midwest Energy Efficiency Alliance

312-784-7277 eroach@mwalliance.org

www.mwalliance.org ♦ www.boccentral.org

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BOC Tech Talk

Economizers – Free Cooling

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Small Packaged HVAC Equipment

 Packaged Rooftop Units (RTU)   Gas Packs   Heat Pumps   All Electric Air Conditioning Units

 Sized in tons of cooling capacity and btuh of heating capacity.

 They condition a large fraction of all commercial building spaces.

 Mostly constant volume - also includes VAV and VVT

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Market Characterization

 34% of commercial buildings have packaged HVAC units

 150,000 – 175,000 units in the field (522M sf of space)

 New sales of approx. 7,000-9,000 units

 Approximately 800 contractors in light commercial HVAC

Data for Pacific Northwest region Published in Light Commercial HVAC Market Assessment - Report No. 05-561-02B Northwest Energy Efficiency Alliance, 2005

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How are RTUs rated?

 Seasonal Energy Efficiency Ratio (SEER)  The higher the SEER rating of an RTU, the

more energy efficient it is. The SEER rating is the Btu of cooling output during a typical cooling-season divided by the total electric energy input in watt-hours (W·h) during the same period.

SEER = BTU ÷ W·h

 Minimum federal requirement = 13 SEER

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Packaged Rooftop Equipment

Source: York International Corp.

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Minimum Outside Air Position

Maximum Outside Air Position

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Building Cooling with Outdoor Air

 Outdoor air conditions are often optimal to provide building cooling as:   Full OSA cooling   Pre-cooling benefit for mixed air

 OSA Damper Operation   Heating Mode

  Damper set to minimum position   First Stage of Cooling with Economizer

  Damper set to full open position   Second Stage of Cooling without Economizer

  Damper set to minimum position  Minimum Damper Position – 10-20% OSA  Maximum Damper Position – 70% OSA or

greater

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ASHRAE 90.1-2010 requirement

•  Economizer required >54,000 BTUh

•  Must Have integrated economizer (simultaneous economizer and compressor operation)

•  Zone 4A •  Dry-bulb economizer

not allowed

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4A

5A

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ASHRAE 90.1 Economizer High Limits

Economizer Device Type

Limit Note

Fixed Dry Bulb OAT > 70F Not allowed CZ 5A (So. Illinois)

Differential Dry Bulb OAT > RAT Not allowed CZ 5A Fixed Enthalpy OAH > 28 BTU / # Electronic Enthalpy (OAT, OA rh) > A OAT RH exceeds the

“A” setpoint curve Differential Enthalpy OAH > RAH Outdoor air enthalpy

exceeds return air enthalpy

Dew-point and dry-bulb temperatures

Dew point OA >55F OAT > 75F

OAT exceeds 75F or outside dewpoint exceeds 55F

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Study found…

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Savings from Integrated Econ.

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Routine Maintenance

 Typical service contract   Filter change   Check basic heating/cooling operation   Belt condition/tightness   Electrical connections   Coil check or cleaning often extra $$

 In house maintenance may be similar

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Maintenance Hall of Shame

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Common Issues

 Comfort driven (too cold/hot)

 Duct design (or lack thereof)

 Fan cycling  Refrigerant charge  Compressor failure  Actuator motor/damper

failure

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Operational Performance

 The “O” part of O&M  Most service agreements and in-house maintenance

practices don’t focus on operational performance

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Operating History

Source: New Buildings Institute - PIER

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Economizer Maintenance

An assessment of overall economizer operation and energy efficiency optimization adjustments

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Improving Energy Performance

 Operating modes  Economizer  Sensor accuracy  Air flows  Refrigerant

charge

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RTU Economizer Evaluation

 Thermostat review   Heating and cooling setpoints   Occupied/Unoccupied schedules   Is thermostat wired for two stages of cooling?   Can morning warm-up be enabled?

 Economizer review   OSA, RA and MA temperature sensors type,

location and condition   Is the OSA sensor a Honeywell C7650?   Control logic setting and condition of controller   Damper assembly condition – Damper, linkage,

seal and motor

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RTU Economizer Evaluation

Airflow testing   Minimum and maximum OSA settings and

flow Evaporator and condenser coils review

  Surface condition of coil   Coil delta T (indicator of refrigerant charge)

Data logger test

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Supply Air Temperature [SAT] (1). Mixed Air Temperature [MAT] (2Return Air Temperature [RAT] (3). Outside Air Temperature [OAT] (4).

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Economizer Function

• Controller issues • Sensors • Differential control – Single point changeover

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Thermostat Issues

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Thermostat Issues

 Room temperature setpoint   Occupied mode set to minimal deadband   Unoccupied mode setpoints not expanded to

broader temperature range than in occupied mode.

 Thermostats only have a single stage call for cooling versus two stage   Stage 1 – Adjust OSA damper to full open position   Stage 2 – Activate Compressor

 Does not have sufficient wiring or adjustability to enable morning warm-up

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Resources

Building Operator Certification www.TheBOC.info

Contact Information Michael Kuk, LEED AP BD+C, CPMP, OPMP,

BEAP, CxA

CERx Solutions Commissioning, Energy Efficiency, Retro

Commissioning Solutions 630-636-7118

630-631-9483 (mobile) Michael.p.kuk@gmail.com

BOC Participants by Sector

BOC Accreditation & Partnerships