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National Elevator Industry, Inc. CODE & SAFETY OFFICE 37 Woodbine Park • Geneseo, New York 14454 • 585.302.0813 Fax: 585.302.0841 WWW.NEII.ORG • E-Mail: [email protected] NEII ASSOCIATION HEADQUARTERS 1677 County Route 64 • P.O. Box 838 • Salem, New York 12865-0838 • 518.854.3100 Fax: 518-854-3257 Agendas NEII PERFORMANCE STANDARDS COMMITTEE November 9, 2010 8:00 A.M. – 5:00 P.M. Eastern Time The next meeting of the NEII Performance Standards Committee is scheduled for Tuesday, November 9, 2010 at the following location: National Elevator Escalator Association 6299 Airport Road Suite 708 Mississauga, Ontario L4V 1N3 The agenda is as follows: 1. Call to Order – 8:00 AM. 2. Record of Attendance. 3. Announcements. 4. Adoption of Agenda. 5. Approval of Minutes of the April 12, 2010 Meeting. 6. Personnel. Please see Attachment #1 for a copy of the Committee Roster. Members are requested to advise Brian Black of any corrections that are required.
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Page 1: National Elevator Industry, Inc. · National Elevator Industry, Inc. CODE & SAFETY OFFICE 37 Woodbine Park • Geneseo, New York 14454 • 585.302.0813 Fax: 585.302.0841 • E-Mail:

National Elevator Industry, Inc. CODE & SAFETY OFFICE 37 Woodbine Park • Geneseo, New York 14454 • 585.302.0813 Fax: 585.302.0841

WWW.NEII.ORG • E-Mail: [email protected]

NEII ASSOCIATION HEADQUARTERS

1677 County Route 64 • P.O. Box 838 • Salem, New York 12865-0838 • 518.854.3100 Fax: 518-854-3257

Agendas

NEII PERFORMANCE STANDARDS COMMITTEE November 9, 2010

8:00 A.M. – 5:00 P.M. Eastern Time The next meeting of the NEII Performance Standards Committee is scheduled for Tuesday, November 9, 2010 at the following location:

National Elevator Escalator Association 6299 Airport Road

Suite 708 Mississauga, Ontario L4V 1N3

The agenda is as follows: 1. Call to Order – 8:00 AM. 2. Record of Attendance. 3. Announcements. 4. Adoption of Agenda. 5. Approval of Minutes of the April 12, 2010 Meeting. 6. Personnel.

Please see Attachment #1 for a copy of the Committee Roster. Members are requested to advise Brian Black of any corrections that are required.

Page 2: National Elevator Industry, Inc. · National Elevator Industry, Inc. CODE & SAFETY OFFICE 37 Woodbine Park • Geneseo, New York 14454 • 585.302.0813 Fax: 585.302.0841 • E-Mail:

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7. Energy Efficiency Standard – Barry Blackaby.

a. Review of March 2010 NEII-1 Energy Efficiency requirements (Attachment #2). b. ICC International Green Construction Code (IgCC) hearing results (Attachment #3). c. ASHRAE Elevator Working Group meeting (Attachment #4). d. ISO TC 178/WG-10 Energy Efficiency Standard. e. Development of NEII-1 Energy Efficiency Standards.

The Committee will continue to draft elevator/escalator energy efficiency standards for NEII-1 that can replace the IgCC and ASHRAE proposals.

8. Interrupting rating of equipment – Doug Henderson. 9. NFPA 70E – John Weber. 10. NEII-1 Publication.

NEII-1 is on the NEII web site, http://www.neii.org/neii-1/neii-1.cfm.

11. NEII NOW Article.

Time permitting; the following agenda items will be addressed.

12. Review and Update of NEII-1 Parts 1, 4, 5, 6 and 7.

The standards with revisions approved to date are posted in the NEII-1 folder on the NEII Performance Standards Committee web site. Committee members should down load and/or print copies of the latest drafts in advance of the meeting. To access the Performance Standards Committee web site and NEII-1 folder click on the following link: http://www.neii.org/members/committees/23/index.cfm.

CAUTION: Please print the Table of Contents and verify you have the latest copy of each document. Many documents have been revised since the last meeting.

The files posted in the NEII-1 folder on the Performance Standards Committee web site are for Committee members use only. These files may reflect work in progress and may

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not be the same as the material available in the NEII-1 publication available to the general public. The following individuals have been assigned oversight responsibility for maintaining the respective material.

a. User Guide – Vincent Robibero.

b. Specification and Drawing Checklist – Robert Caporale.

c. Flood Requirement Data Form – Barry Blackaby.

d. Seismic Requirement Data Form – Barry Blackaby.

e. NEII Power Standards – John Weber, Joseph Busse

f. NEII Power Confirmation Forms – John Weber.

g. NEII Temporary Power Supply Guidelines – Doug Henderson.

h. NEII Temporary Power Confirmation Form – Doug Henderson.

i. NEII Electromagnetic Compatibility Guidelines – Joseph Busse.

j. Part 5 Introduction and Scope –Robert Caporale.

k. Performance Terminology Matrix – Robert Caporale.

l. Performance Terminology Matrix Destination Oriented Elevators –Robert

Caporale.

m. Performance Terminology Matrix Examples – Tricia Derwinski.

n. Vibration Diagrams – Tricia Derwinski.

o. Performance Standards Matrix New Elevator – John Weber.

p. Performance Standards Matrix New Escalator and Moving Walk – Tricia Derwinski.

q. Operational Terminology Matrix –Robert Caporale.

r. Building Conditions Affecting Elevator Performance – Robert Caporale.

s. Building Conditions Affecting Escalator Performance – Robert Caporale.

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t. Part 6, Modernization Guidelines – Barry Blackaby.

u. Part 7, Maintenance Guidelines – Vincent Robibero.

13. Old Business. 14. New Business.

a. PES, New Technology, Performance Based Code.

The committee agreed to include this as a new item for continual review for needed modifications to NEII-1.

15. Other Business. 16. Time and Place for Next Meeting. 17. Adjournment. The meeting is scheduled to adjourn at 5:00 PM. Attachments: 1. Committee Roster 2. NEII-1 Energy Efficiency Standards (2010 draft) 3. ICC International Green Construction Code hearing results 4. ASHRAE Elevator Working Group meeting notes

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Performance Standards Committee

Name BRIAN BLACKTitle NEII CODE AND SAFETY CONSULTANTCompany BDBLACK CODESAddress 4034 NORTH HAMPTON BROOK DRIVECity HAMBURG State NY Zip Code 14075-6410

E-Mail [email protected]

725

Notes

SecretaryCategory

Phone 1 302-0813 Extension

Phone 2 237-5965

Fax 1

Mobile 354-6772585Area Number Area Number

585 585

Country UNITED STATES

Name BARRY BLACKABYTitle MANAGER OF WORLD WIDE ELECTRICAL CODESCompany OTIS ELEVATOR COMPANYAddress FIVE FARM SPRINGS ROADCity FARMINGTON State CT Zip Code 06032

E-Mail [email protected]

425

Notes Alternate Member NEII Performance Standards Committee for ISO Activites

MemberCategory

Phone 1 676-6459 Extension

Phone 2

Fax 1 998-3293Mobile

860Area Number Area Number

860

Country UNITED STATES

Name JOSEPH BUSSETitle EXECUTIVE TECHNICAL ADVISORCompany FUJITEC AMERICA, INC.Address 7258 INNOVATION WAYCity MASON State OH Zip Code 45040

E-Mail [email protected]

300

Notes

ChairCategory

Phone 1 932-8000 Extension

Phone 2

Fax 1 933-5582Mobile 739-0802

513Area Number Area Number

513513

5203

Country UNITED STATES

Tuesday, October 26, 2010 Page 1 of 4

ATTACHMENT #1 Page 1 of 4

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Performance Standards Committee

Name ROBERT CAPORALETitle EDITORCompany ELEVATOR WORLD, INC.Address P. O. BOX 6507City MOBILE State AL Zip Code 36660

E-Mail [email protected]

186

Notes Liaison member NEII Performance Standards Committee representing Elevator World

MemberCategory

Phone 1 730-5093 Extension

Phone 2 479-4514

Fax 1 479-7043Mobile 510-4564

800Area Number Area Number

251251251

Country UNITED STATES

Name TRICIA DERWINSKITitle PRINCIPAL SYSTEMS ENGINEERCompany OTIS ELEVATOR COMPANYAddress FIVE FARM SPRINGS ROADCity FARMINGTON State CT Zip Code 06032-2567

E-Mail [email protected]

276

Notes Alternate member NEII Performance Standards Committee

AlternateCategory

Phone 1 676-6268 Extension

Phone 2

Fax 1 676-5494Mobile

860Area Number Area Number

860

Country UNITED STATES

Name DOUG HENDERSONTitle ENGINEERCompany THYSSENKRUPP ELEVATOR CORPORATIONAddress P. O. BOX 370City MIDDLETON State TN Zip Code 38052

E-Mail [email protected]

624

Notes

MemberCategory

Phone 1

Extension

Phone 2

Fax 1 376-1913Mobile 652-3649

Area Number Area Number

731901

Country UNITED STATES

Tuesday, October 26, 2010 Page 2 of 4

ATTACHMENT #1 Page 2 of 4

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Performance Standards Committee

Name JAY POPPTitle EXECUTIVE VICE PRESIDENTCompany LERCH, BATES & ASSOCIATES INC.Address 8089 S. LINCOLIN STREET, SUITE 300City LITTLETON State CO Zip Code 80122

E-Mail [email protected]

202

Notes Liaison member NEII Performance Standards Committee representing IAEC

MemberCategory

Phone 1 795-7956 Extension

Phone 2

Fax 1 797-7109Mobile 881-3588

303Area Number Area Number

303303

Country UNITED STATES

Name VINCENT P. ROBIBEROTitle NORTH AMERICAN CODE CONSULTANTCompany SCHINDLER ELEVATOR CORPORATIONAddress P. O. BOX 1935City MORRISTOWN State NJ Zip Code 07962-1935

E-Mail [email protected]

53

Notes

MemberCategory

Phone 1 397-6018 Extension

Phone 2

Fax 1 397-6141Mobile 216-8030

973Area Number Area Number

973973

Country UNITED STATES

Name MARVIN W. SCHUMACHERTitle PRESIDENTCompany SCHUMACHER ELEVATOR COMPANYAddress P. O. BOX 393City DENVER State IA Zip Code 50622

E-Mail [email protected]

11

Notes Liason member NEII Performance Standards Committee representing NAEC

MemberCategory

Phone 1 984-5676 Extension

Phone 2

Fax 1 984-6316Mobile

319Area Number Area Number

319

Country UNITED STATES

Tuesday, October 26, 2010 Page 3 of 4

ATTACHMENT #1 Page 3 of 4

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Performance Standards Committee

Name JOHN WEBERTitle ASSISTANT VICE PRESIDENT TECHNICAL

SERVICESCompany KONE INC.Address ONE KONE COURTCity MOLINE State IL Zip Code 61265-

E-Mail [email protected]

274

Notes

MemberCategory

Phone 1 743-5450 Extension

Phone 2 764-6771 5450

Fax 1 743-5454Mobile 781-4116

309Area Number Area Number

309309309

Country UNITED STATES

Name DOUGLAS A. WITHAMTitle VICE PRESIDENTCompany G. A. L. MANUFACTURING CORP.Address 50 EAST 153 STREETCity BRONX State NY Zip Code 10451

E-Mail [email protected]

389

Notes Liason alternate member NEII Performance Standards Committee representing NAEC

AlternateCategory

Phone 1 292-9001 Extension

Phone 2 425-7763 260

Fax 1 292-2034Mobile

718Area Number Area Number

877718260

Country UNITED STATES

Tuesday, October 26, 2010 Page 4 of 4

ATTACHMENT #1 Page 4 of 4

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NEII-1 PROPOSAL FOR ENERGY EFFICIENCY NEII Performance Standards Committee 12-Apr-2010 1.0 PREFACE: The discussion hereafter deals with energy efficiency concerns on elevators, escalators and moving walks. 2.0 INTRODUCTION The energy usage of elevators, escalators and moving walks in buildings can be a difficult element to predict when a building is in the planning and construction phases. The largest unknown is the traffic pattern of people using the elevators, escalators and moving walks and the amount of inter-floor traffic. There are however certain “rules of thumb” that have proven true over the years. In the typical building the elevators, escalators and moving walks will consume about 5% of the total building energy consumption. The consistency of the percentage makes sense since there is a correlation between the number of occupants and the number of elevators in a building. This relationship of people to elevators is maintained from small buildings through large complexes. The situation becomes more complex in large structures and multi-use complexes due to technologies employed. The commercial elevator market classically contains three distinct segments Low rise – typically hydraulic elevators Mid rise – Typically geared traction elevators High rise – typically gearless traction Technology continues to advance and with the advent of machine room-less elevators these three market segments no longer have such clearly defined lines. The traction market is becoming a single market with the advent of small gearless machines. As the cost point of the small gearless machines decreases more and more the classic hydraulic elevator market is under pressure. The trend towards greener products is also putting pressure on all elevator technologies. These advancements are also driving the products to greater energy efficiency. The vertical transportation products have kept pace with the general market trends for lower energy usage and diminished use of Materials Of Concern (MOCs). This section of the NEII Standards will address energy usage and efficiency aspects of modern elevators in use. It will not address the energy used to develop, build, ship or dispose of the system, nor will it address the use of Materials Of Concern.

3.0 SCOPE The approach taken by NEII is to follow the direction of the major “credit” based Efficiency Standards popular in the building industry. The most common of these systems is Leadership in Energy and Environmental Design (LEED), but other similar Standards exist, mostly based on the LEED concept. This type of Standard encompasses different aspects of the building environment not a simple energy type of calculation.

ATTACHMENT #2 Page 1 of 4

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The NEII approach is also intended to be a performance oriented set of guidelines so as to keep the guidelines relevant over a longer period of time. Performance based guidelines will also ensure that innovation and creativity employed in the design of equipment can be recognized for energy savings. In this approach the efficiency is derived by technology and features which are the major drivers to the amount of energy used in the vertical transportation system in any given building. The last section of this Standard will give typical efficiency percentages for the technologies as well as some equations. In general the technology and features will by far determine the transportation’s efficiency as opposed minor design details particular to any manufacturer. 4.0 ENERGY EFFICIENCY GUIDELINES Several factors will impact the energy utilized by the vertical transportation equipment in a building. The primary task of the equipment is to safely move people in the structure. The building use and size will normally determine the criticality of how efficiently the people need to be moved. The vertical transportation equipment in general accounts for about 5% of the energy utilized in larger buildings. These larger structures are also the most concerned buildings as to how efficiently from a time perspective, people are accommodated by the elevators and escalators. The smaller 2 story buildings are typically less concerned with how efficiently the occupants are moved. Vertical transportation equipment, as all other building systems, has become highly “computerized” with the advances in technology. These advancements have impacted all aspects of the equipment: safety; cost; efficiency of moving people and energy utilization. Examples of these advances are evident in the areas of controllers, dispatching and drives. The advent of electronics has changed how and when power is utilized by the equipment. Estimates are that older relay based controlled equipment utilized 70% of the energy to move people and 30% in the idle state. Today those numbers are closer to 30% is actually moving people and 70% is utilized in the idle state. The changes have occurred due to the need to keep the electronics “alive” for response to people and the efficiency of the drive and machine technology advances. The trend with the technological advances has been to lower overall energy use while shifting the majority of the power consumption from motion states to the idle state. In larger buildings another major feature that affects energy usage is the dispatching system. The direction of dispatchers has always been to move people through the building with less delay. This trend typically means shorter waiting times and less full cars and results in higher energy usage. If the dispatcher is “tuned” for longer average waiting times, the cars on average are more heavily occupied and energy usage is decreased. This section will detail items to be considered for energy efficiency when selecting vertical transportation equipment for a building. 4.1 ELEVATORS 4.1.1 POWER CONVERSION SYSTEMS The elevator selected should utilize the most energy efficient technology that is practical for the given structure and its intended use.

ATTACHMENT #2 Page 2 of 4

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Drives selected should provide for energy storage or use of regenerated power. 4.1.2 Hoistway Elevator and counterweight guiding systems shall be exempt from energy rating systems for safety reasons. 4.1.3 LIGHTING Light sources for the cab interior and hoistway should be selected so as to maximize the lumens per watt utilized. Lighting target value = 50 lumens per watt.

4.1.4 CAR VENTILATION Cab ventilation fans should be selected to maximize the CFM per watt at maximum flow rate. Ventilation target value = 3.0 CFM per watt. 4.1.5 IDLE/STANDBY MODE After a set period of time that an elevator is in an idle state, the elevator should automatically reduce the energy consumption by turning off or reducing the power consumption of nonessential energy consuming devices without compromising safety. In periods of low traffic, a group of elevators should minimize the power consumed by the group of elevators to the greatest practical level. 4.2 ESCALATORS AND MOVING WALKS 4.2.1 POWER CONVERSION SYSTEMS The escalator selected should utilize the most energy efficient technology that is practical for the given structure and its intended use. Gearbox targeted efficiency = 94% percent at full load. Down-running escalators shall return regenerated energy to the line. 4.2.2 LIGHTING Light sources should be selected so as to maximize the lumens per watt utilized. Lighting target value = 50 lumens per watt.

ATTACHMENT #2 Page 3 of 4

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4.2.3 IDLE/STANDBY MODE During standby mode or no load conditions, escalators and moving walkways should minimize the energy utilized to the greatest extent practical. 4.2.4 HANDRAILS Handrails should use friction-reducing measures.

ATTACHMENT #2 Page 4 of 4

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Comment #: �6-257�

Section: 610.2.1.4 Standby mode�����Commenter: Mark Benjamin, Crown Jade Design and Engineering, Inc. representing himself

Revise as follows: Revise as follows�������������� ��������������������������������������� ������������������ventilation�������� �������������������������������������� ���������������������������������������� ����� ������� �� ������������������� �������� ��������������������������������� ����� ����� ���������� ������������������������������ ������������������������������ ������ ����� ���������������������������� �� ���� � buildings������������������ ���� ���������������� �������� ��� ������� ����������������������������� ��! ����������"�������� ������ ������������ �������

Reason:��

�������� ����� ATTACHMENT #3 Page 5 of 8

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Comment #: 6-258�

Section: 610.2.1.4

Commenter: Paul A. Bielamowicz, AIA

Delete without substitution:

610.2.1.4 Standby mode���� ����� ���� ���� �� ��� ��������� ��� ����������� ���� ����� �� ��� ������ ���������ventilation��� ����� �� ��������� ��� ����� ����� ���� ������ ���� ������� �������� ���������� �� ���������� ��� ����� ������� �� ������������������� ���� ���� ��������������������������������� ����� ��� �� ���������� ������������������������������ ������������������������������ ������ ����� ���������������������������� �� ���� �buildings�������������� ���� ��� � ����� �������� ��� ���� ���� ��� ��� ���� ���� �� �������� ��� ����� ������� ��������� ������ ������������ �������

��Reason: ��� **��6�6�)�����(��)�������������(��� ,�� ������� �9�����)��6� ��)�2� �6 �� ��)�*�����(��� ���9�)�+�(������� ��� ���� ����� �)6�9������6����(���)�2� ����(���2��� '���*�)'���� �&���(���* ��� '�����+���2�6�9+�6�1�����?����(��* �' �(��6 �,(���� ������������*�))�,�(������� �(��� ����)�)�'����'�+�(�?�6� '���6 � ����� �*�)'���� �&�

�������������� ATTACHMENT #3 Page 6 of 8

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�������������� ATTACHMENT #3 Page 7 of 8

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��������4����� ATTACHMENT #3 Page 8 of 8

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6-253Committee Action: Disapproved Committee Reason: The committee disapproved this comment because there was an absence of product data. 6-254Committee Action: Approved as Submitted Committee Reason: The committee approved this comment because it made the language of Section 610.2 clearer.

6-255Committee Action: Disapproved Committee Reason: The committee disapproved this comment because, although it had good points, it needs further development. 6-256Committee Action: Approved as Submitted Committee Reason: The committee approved this comment because it clarifies the requirements for elevatorsand makes them enforceable.

6-257Committee Action: Approved as Submitted Committee Reason: This comment was approved by the committee because it is an editorial change which clarifies the code.

6-258Committee Action: Approved as Submitted Committee Reason: This comment was approved by the committee because it addresses a life safety issue.

6-259Committee Action: Approved as Submitted Committee Reason: This comment was approved by the committee because it clarifies the code using enforceable language. 6-260Committee Action: Approved as Submitted Committee Reason: This comment was approved by the committee because it clarifies the code usingenforceable language.

121

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Conference Call Meeting Notes – October 6, 2010 SSPC 90.1 Elevator Working Group – Meeting 6 Submitted by Jeff Boldt Items requiring action are in bold text. Items I thought up after the meeting are in red text. A. Attendees

X Jeff Boldt (chair) 90.1 Member – Mechanical Engineer – KJWW Engineering User X Michael Rosenberg 90.1 ECB and Mechanical Member – LEED EA TAG - PNNL Energy analyst User X Richard Lord 90.1 & 189.1Member – Carrier/United Technologies User X Hyman Kaplan 90.1 Member - EE and lighting designer – CEC advisory Committee User X Wayne Stoppelmoor 90.1 Lighting Subcommittee - Schneider Electric User Aaron Campbell KONE Elevators - Service Industry Taylor Vaughan KONE Elevators – New Construction Industry Jeff Park Watt Stopper User Michael Mehl JBB Consulting Engineers User

X Rich Fargo LEED Elevator TAG - Otis Elevator – Product Development Industry Scott Frank LEED Elevator TAG - JBB Consulting Engineers User Terry Smith 90.1 Mechanical Subcommittee member – Marriott International Owner James Cyre

X Susanna Hanson 90.1 Mechanical Subcommittee member - Trane User A. Escalator Speed Control

1. ASME code limitations prevent stopping escalators automatically. 2. Rich will find out what the ASME code process is.

B. Elevator Efficiency 1. Elevator companies are testing to VDI4707 and advertising their results. 2. Manufacturers have independent verification of these results. 3. MilliWatt-hours/KG-meter are the units in the standard. 4. There are usage categories that are used to apply weighting factors between standby energy and movement

energy. 5. Ratings are A through G. All elevator companies can meet a C rating. 6. Rich will send us links to get VDI information to help us determine a reasonable requirement. 7. ISO is developing a -1 standard. The -2 standard hasn’t begun, but will include elevator ratings. 8. VDI can issue elevator certificates. 9. Europe has no elevator energy requirements, and use the rating system to compare elevators. 10. We decided to write draft wording around the VDI standard. 11. We decided to form a smaller group of Rich, Jeff, and Barry Blackaby to draft language for the group to

review. 12. Rich will ask Barry to contact NEII about having more elevator members join the group. 13. We discussed asking DOE to write a letter to NEII regarding establishing elevator efficiencies. Ron Majette is

probably the right contact. Jeff will contact Ron.

C. Review of Public Review Comments: 1. We attempted to draft revised wording that clarifies that it is allowable to average efficiencies of light fixtures

in elevator cabs. We got as far as “Each cab lighting system total initial lumens of all light sources in the cab divided by the total luminaire Wattages, as described in 9.1.4, not including elevator signals and displays of at least 35 lumens per Watt.” We then decided that Hy will work to perfect this wording and bring it back to the group.

D. Items below this point were not discussed at this meeting. They are being kept in the minutes to remind us to

revisit them in later meetings. ATTACHMENT #4 Page 1 of 2

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E. Member Backgrounds

1. We decided that we should add a representative from a firm that manufacturers exclusively or primarily hydraulic elevators.

2. Jeff contacted the National Elevator Industry, Inc. to see if any hydraulic manufacturers would like to participate, but they have not appointed a member or agreed to appoint one.

F. NEII Involvement:

1. Steve Ferguson received a letter from Brian Black representing NEII. 2. Rich also spoke with Brian last week. Brian stated to Rich that he has no problem with requirements regarding

fans and lights, just “elevator” components such as drive systems, etc. 3. Based on this the WG decided to remove all proposed requirements in areas other than lighting and

ventilation. This shortened the wording substantially. 4. The group would like to return to those areas in the future, but with NEII involvement. Some requirements

also need to wait for revisions to the ANSI Elevator Code. G. New Information

1. Terry talked to Jeff before our third meeting and said that Marriott guarantees a cost model on their projects, and that for a 4-story hotel their cost model is $70,000 for a hydraulic elevator and $120,000 for a traction elevator. Since that meeting I have had conversations where it was indicated that the cost differential is not that large.

H. Elevator Energy Standards

1. Are there any? VDI 4707 in Germany. Only for measurement of installed elevators. J/KG*meter of travel. 2. E4 project is entering its final phase. 3. ISO Standard being worked on. Working on classification ratings. ISO 25745-1 = measurement. -

2=classification. 4. Energy-Efficient Elevators and Escalators (E4) is an EU project aimed at reducing elevator and escalator energy

consumption. Along with other information the E4 website states that elevators and escalators consume an average of 4% of building energy, and that the most efficient product in each drive class “can use up to 80% less electricity than the least efficient.”

I. Scalar Ratio

1. Often 90.1 proposals must satisfy an economic criterion referred to as a “scalar ratio”. This is basically a LCC analysis converted to simple payback. The ratio required usually depends only on the predicted useful life of the equipment. For a 20-year life, the scalar would be 11.5; meaning that proposals must have a simple energy payback of under 11.5 years.

2. In many cases professional judgment or current industry practice make the scalar calculation unnecessary. We need to separate each requirement into the proper category and perform scalar calculations for those that require it. To make that determination Jeff suggested using the following questions to separate each requirement. a. Degree of Change

1) No effect – all the major manufacturers already do this 2) Some manufacturers and products will change 3) Major industry change

b. Economics 1) Obviously pays back 2) Not sure

c. Life of Component 1) Years 2) Scalar

ATTACHMENT #4 Page 2 of 2