Open Session Meeting of Air-Conditioning and Heat Transfer

Open Session Meeting of Air-Conditioning and Heat Transfer

Products Section Hyatt Regency Coconut Point Resort & Spa; Bonita Springs, FL

Tuesday, 15 November 2011; 2:00 – 5:00 p.m.

MINUTES

Pursuant to the notice sent to all members of the Air-Conditioning and Heat Transfer Products Section (ACHT), the Forced Circulation Air-Cooling and Air-Heating Coils Subsection (ACHC), the Central Station Air-Handling Units Subsection (AHU), the Room Fan-Coils Subsection (RFC) and the Unit Ventilators Subsection (UVNT) a meeting was held on Tuesday, 15 November at Hyatt Regency Coconut Point Resort & Spa in Bonita Springs, FL. Members Present:

ACHT ACHC AHU RFC UVNT

Aaon, Inc. Mark Fly X X

Carrier Corporation Dale Bennett X X X X X

Change'Air Products & Services LTD Mark Long (Proxy) X X

ClimateCraft, Inc Walter Mecozzi X X

Coilmaster Corp. Rick Larson X X

International Environmental Corp. Kim Sabatino X X

Johnson Controls, Inc.

John Bade

Syed Raza

Neil Sparber

Ron Woodbury

X X X X

Luvata Grenata, LLC Dennis Appel X X

Magic Aire Ron Duncan X X X X X

McQuay International James Olsen X X X X X

Mestek, Inc. *** Jim Jagers

Mike Kaler X X X X

Modine Manufacturing Company Eric Steinbach X X X

Mortex Products, Inc. (Summit Mfg.) Terry Small X X

Nailor Industries Inc. Gus Faris X X X

Price Industries (E.H. Price) Jerry Sipes X X X

RAE Corporation Jay Kindle X X X

The Whalen Company Thomas Delaney

Tony Leoncini X X

TITUS Randy Zimmerman X X

Trane Darcy Lee

Charlie Wilkinson X X X X X

Williams Furnace Co. Rick Bostian X X X

NUMBER OF VOTING MEMBERS 35 23 15 17 6

MEMBERS PRESENT 20 15 8 12 6

% Present at Annual Meeting 57% 65% 53% 71% 100%

MINUTES Air-Conditioning and Heat Transfer Products Section

Tuesday, 15 November 2011 Page 2

Members Not Present: Orep ACHT ACHC AHU RFC UVNT

Aerofin Division of Air & Liquid Systems Corp Gary L. Carroll X X

AeroSys, Inc James Garrett X X

Century Corporation** Ki-Hyun Kim O O

Dunham-Bush, Inc. Steve Camilli X X X X

Emerson Heating Products* Mr. Cos Caronna O

Heat Transfer Products Group Kyle Wessells X X X

Heatcraft Worldwide Refrigeration LLC William Bays X X

Mammoth-WEBCO, Inc. Eric Roberts X X

Multiaqua, Inc. Ralph Feria X X

S&S Refrigeration (LRC Coil Co.) Mike Williams X X

Superior Make Aircon (Smartech)** Mr. Siaw Yoon

Seong O O O

Temtrol, Inc. Kim Osborn X X X

United CoolAir Corp. Mr. Athar Khan X X

Ventrol Air Handling Systems, Inc. Pierre Blanchard X X

Wolf Steel Ltd Mark Robinet X X

Zehnder Rittling James Blount X X

Also Present:

AHRI

Danny Abbate

Karim Amrane

Shannon Michael

Sunil Nanjundaram

Laura Petrillo

UL Russell Doss

NEW MEMBER

* Associate Member: No Vote.

** International member: Cannot chair or vote on US Policy issues. Absence does not count

against quorum

1. QUORUM DETERMINATION AND CALL TO ORDER

Members and guests introduced themselves and the quorum requirement was met.

The meeting was called to order at 2:06 p.m. 2. ANTITRUST POLICY STATEMENT

AHRI staff read AHRI Antitrust Policy Statement briefly reminding meeting participants of the requirements of AHRI’s Antitrust Guidelines.



3. APPROVAL OF THE 13 APRIL 2011 MEETING MINUTES The section members unanimously VOTED: TO APPROVE THE MINUTES AS WRITTEN.

4. HIGHLIGHTS FROM AHRI NEED-TO-KNOW SESSION

Ms. Petrillo provided a brief report on the highlights from the Need-to-Know Session held Sunday evening.

5. MEMBERSHIP ACTIVITIES

Ms. Petrillo reported that thirty-six (36) companies are members of the ACHT Product Section. Twenty-three (23) companies are members of the Air-Cooling and Air-Heating Coils (ACHC) Subsection. Fifteen (15) companies are members of the Central Station Air-Handling Units (AHU) Subsection. Seventeen (17) companies are members of the Room Fan-Coils (RFC) Subsection. Six (6) companies are members of the Unit Ventilators (UVNT) Subsection. Ms. Petrillo asked to be contacted if members had any suggestions for reaching other potential members for this section.

6. CERTIFICATION ACTIVITIES – CERTIFICATION PROGRAM PARTICIPANTS

A. ACHC Certification Program: Ms. Petrillo reported that sixty-nine (69) companies participate in the AHRI ACHC Certification Program.

B. AHU Certification Program: Ms. Petrillo reported that fifteen (15) companies participate in the AHRI AHU Certification Program.

C. RFC Certification Program: Ms. Petrillo reported that nineteen (19)

companies participate in the AHRI RFC Certification Program. D. UVNT Certification Program: Ms. Petrillo reported that five (5) companies

participate in the AHRI UVNT Certification Program. 7. STANDARDS ACTIVITIES

A. AHRI Standards 1270 (I-P)-2011 & 1271 (SI)-2011, Seismic Qualification of HVACR Equipment

Mr. Abbate reported that Proposed AHRI Standards 1270P (I-P) & 1271P (SI), Seismic Qualification of HVACR Equipment have been approved and published for the first time. They are downloadable for free from AHRI’s



website. The Seismic Subcommittee will be starting revisions to the standards in early 2012 to include more AHRI products in the scope of the standards. Members asked if there were efforts to harmonize the AHRI standards with the Office of Statewide Health Planning and Development (OSHPD) seismic standard.

ACTION: DIRECT AHRI STAFF TO WRITE A LETTER TO OSHPD AND REQUEST THAT CALIFORNIA ADOPT AHRI STANDARDS 1270/1271.

B. Revised AHRI Standard 260-2001, Sound Rating of Ducted Air Moving

and Conditioning Equipment

Mr. Abbate reported that revised AHRI Standard 260-2001, Sound Rating of Ducted Air Moving and Conditioning Equipment has been completed by the AHRI Technical Committee on Sound. The AHU, RFC and UVNT Engineering Committees have reviewed the standard and voted via letter ballot to approve. The AHU, RFC and UVNT Subsection members unanimously

VOTED: TO APPROVE REVISED AHRI STANDARD 260-2001.

C. Classroom Acoustics

Mr. Abbate reported that a federal rulemaking has been instituted by the US ACCESS Board to promulgate as requirements the provisions of the Acoustical Society of America (ASA) Standards, ANSI/ASA S12.60-2010 Part 1, Acoustical Performance Criteria for Permanent Site-BuiltClassrooms and ANSI/ASA S12.60-2009 Part 2, Acoustical Performance Criteria for Relocatable Classrooms. The US ACCESS Board must provide an economic impact study, which will be compared to a study that an AHRI member performed, before the rulemaking process can move forward. Due to recent budget constraints, the ACCESS Board has been unable to complete the study. Until they are able to do so, the rulemaking will be on hold. Members requested additional information about the planned phase-in period and if any states other than Connecticut have adopted the rule.

D. Laboratory Liaison Committee (LLC), CANENA and North

American Standards Planning Joint Task Group

Mr. Abbate provided a brief overview of the AHRI Laboratory Liaison Committee (LLC) activities. AHRI is working to develop IEC based tri-national electrical safety standards through CANENA (Council for Harmonization of Electrotechnical Standards of the nations of the Americas). AHRI sponsors four CANENA working groups, which are comprised of individuals from UL, CSA and ANCE. They are working to



develop the 60335 series of standards. The 60335-1, General Requirements - Safety of household & similar appliances, has been published. The product specific standard 60335-2-40, Heat pumps, air conditioners, and dehumidifiers, is now going through the second comment review. The working group developing the standard 60335-2-34 Compressors, is meeting in late December to continue working. The final CANENA working group is updating the bi-national standard UL 1995/CSA 236, Heating and air-conditioning. UL has developed the Flammable Refrigerants Joint Task group, which is comprised of three working groups. AHRI is well represented on all three. The new IEC SC 61D WG9 is addressing the addition of A2L refrigerants in the IEC standard 60335-2-40. The AHRI sponsored North America Standards Planning Joint Task Group consists of members from CSA, UL and ANCE as well as several AHRI members. This group reviews the revision cycles of the tri-national IEC 60335 standards and also looks at potential future standard work.

E. Wind Restraint Standard

Mr. Abbate reported that an AHRI Task Force has been formed to develop Proposed AHRI 1310P, Wind Load Design of HVACR Equipment. This standard will cover all AHRI products that are exposed to the wind. The Task Force has had trouble taking the wind codes from Florida and turning them into AHRI standard language. The group has identified a need for consulting help to develop the standard. The Section was notified that a request for proposal for consulting help will be developed and the Section will have the opportunity to vote on the inclusion of their products in the scope of the standard via letter ballot. All sections that vote to contribute will assist with an equal share of the cost. Members noted that this standard is only of interest to the AHU Subsection.

ACTION: THE AHU SUBSECTION REQUESTS THAT THE WIND RESTRAINT SUBCOMMITTEE PROVIDE CLARIFICATION ON WHETHER THE STANDARD WILL INCLUDE INFORMATION ABOUT PENETRATION SIMILAR TO MIAMI-DADE CODE.

ACTION: AHRI TO LETTER BALLOT THE AHU SUBSECTION TO VOTE TO APPROVE FUNDING FOR THE PROJECT AFTER THE FINAL COST HAS BEEN DETERMINED.



F. Technical Committee on Sound (TCoS) Activities Mr. Abbate provided a brief overview of the AHRI Technical Committee on Sound (TCoS) standards activities. The TCoS is currently developing the following standards:

• Revised AHRI Standard 260-2001, Sound Rating of Ducted Air Moving and Conditioning Equipment;

• Proposed ISO Standard 13261-3, Sound Power Rating of Air-Conditioning and Air-Source Heat Pump Equipment – Part 3: Ducted Equipment;

• Proposed AHRI Standard 1280P, Sound Performance Rating of Water Cooled Refrigerating and Air-Conditioning Equipment; &

• Proposed AHRI Standard 1150P, Declaration and Verification of Noise Emission Values of HVAC Machinery and Equipment Using Published Sound Rating Values.

G. Discussion of AHRI’s Continued Role as Secretariat to International

Standards Activity and its Relevance for the US Ms. Petrillo reported that AHRI supports and administers three ISO Secretariats in TC 86 at a cost of $12,760 per year in fees paid to ANSI. In addition, there are various levels of resources and staff time being used to administer this support. The Section has one (1) active project, ISO Standard Committee Draft (CD) 17553, Room Fan-Coil Units, Testing and Rating for Thermal Performance. Members provided the following feedback:

ACTION: THE ACHT SECTION CONSIDERS AHRI PARTICIPATION IN ISO TC 86 SECRETARIAT POSITIONS TO BE VALUABLE, WORTH THE FINANCIAL INVESTMENT AND ADVISES THAT AHRI SHOULD CONTINUE ITS ROLES.

H. ISO Standard Committee Draft (CD) 17553, Room Fan-Coil Units, Testing

and Rating for Thermal Performance Ms. Petrillo reported convenor responses to DIS comments were sent out to ISO/TC 86/SC 6/WG 7 on “Room Fan-Coil Units” for review due 22 October 2011 and that comments from one member were received. The Convenor, Kim Sabatino, will review the comments and decide if a meeting of the WG is necessary before issuing FDIS. The WG has the



option to meet at AHRI via webcast or in conjunction with the next ISO/TC 86/SC 6 in Brugge, Belgium, in early June 2012.

I. Status of AHRI Standard 410-2001, Forced Circulation Air-Cooling and Air-Heating Coils

Ms. Petrillo reported that Addendum 3 which includes Propylene Glycol has been published and that AHRI Standard 410-2001 is currently under full review. One consultant, Buzz Myers, has been hired to assist the Engineering Committee (EC) with the revision which includes expanding the Range of Standard Operating Conditions (Table 1) to include reheat applications and increasing the DB EAT to 120 °F. The EC continues to meet and expects to have the standard ready for a vote by early 2012.

J. Status of ANSI/AHRI Standard 430-2009, Performance Rating of Central

Station Air-Handling Units

Ms. Petrillo reported that the AHU EC continues to meet to discuss the development of a new power rating method (kW/CFM).

K. Status of AHRI Draft Standards 1350P (I-P) and 1351P (SI), Performance

Rating of Central Station Air-Handling Unit Casing

Ms. Petrillo reported that at the 20 May 2011 meeting, the AHU EC will meet to begin work on AHRI Draft Standards 1350P (I-P) and 1351P (SI), Performance Rating of Central Station Air-Handling Unit Casing. This new standard will address air-handler casing mechanical performance, specifically, panel deflection, thermal performance, and cabinet leakage.

ACTION: VOLUNTEERS TO WORK ON THIS STANDARD SHOULD CONTACT MS. PETRILLO.

L. Status of ANSI/AHRI Standard 440-2008, Performance Rating of Room

Fan-Coils

Ms. Petrillo reported that the RFC EC have been meeting to review and clarify several tests in AHRI Standard 440-2008. Neither ASHRAE 79 nor ASHRAE 33 covers the following to the satisfaction of the EC; airflow on a dry coil, coil pressure drop test, standard ratings tests, insulation efficiency test and the low voltage test. Members have been working closely with the ASHRAE SPC 79 committee to ensure the revised ASHRAE 79 will be harmonized with AHRI 440.

M. Status of AHRI Standard 840-1998, Unit Ventilators

Ms. Petrillo reported that the EC review of AHRI Standard 840-1998 is nearing completion. The committee expects to send the standard to the section for a vote in early 2012.



8. STATISTICAL ACTIVITIES

A. AHRI Statistical Data Release and Distribution

Ms. Michael reported that on 15 September 2011, the General Statistics Committee discussed and approved a policy regarding the release and distribution of statistical data as it pertains to company employees, company sales agents, and state and federal government entities. Official representatives of statistical program participants will be required to sign an agreement acknowledging their understanding and acceptance of this policy.

B. Information on New Rules for Timely Reporting for Statistical Reports

Ms. Michael also reported that the General Statistics Committee reaffirmed the rules for timely reporting of statistical data which will be set forth in a document for participating members to sign acknowledging their understanding and acceptance of these new rules.

C. Air Conditioning and Heat Transfer Products Definitions

Ms. Michael reported that a working group met in October 2011 to review and propose updates for the statistical definitions of Air-Cooling and Heating Coils and Unit Ventilators. After brief discussion, ACHC Subsection members unanimously

VOTED: TO APPROVE THE FOLLOWING ADDITION TO THE ACHC STATISTICAL DEFINITION, “DO NOT INCLUDE COILS PRODUCED BY MANUFACTURER FOR USE IN OTHER PRODUCTS PRODUCED BY THE SAME MANUFACTURER.”

UVNT Subsection members unanimously

VOTED: TO APPROVE THE FOLLOWING DELETION TO THE UVNT STATISTICAL DEFINITION, “THAT THIS PROGRAM DOES NOT APPLY TO UNITS EMPLOYING VOLATILE-REFRIGERANT COILS OR STEAM COILS.”

Please see Exhibit 1 for the current definitions for ACHT statistical programs. The WG reviewed product definitions for Central Station Air-Handling Units and Room Fan-Coil Units and attempted to divide the products by motor drive, motor horsepower, external static pressure, and the source of heating/cooling; however, they were unable to make recommendations for these programs. They suggested that the primary



representatives as well as the statistics representatives meet to review the AHU and RFC definitions.

ACTION: AHU AND RFC PRIMARY SUBSECTION AND STATICS REPRESENTATIVES ARE TO HOLD A JOINT MEETING TO REVISE AHU AND RFC STATISTICAL DEFINITIONS.

D. Export Shipments

Ms. Michael reported that staff has noticed most companies are not reporting their orders and shipments to Canada and exports including Canada on the monthly approved forms. In response to an Applied Statistical Subcommittee directive, AHRI staff will resend the new report forms to all participating members to make sure that everyone is reporting their data correctly for 2012. Additionally, staff continues to work with the Central Station Air-Handling participants to collect 2011 year-end data for orders and shipments to Canada and exports including Canada.

ACTION: AHRI STAFF TO DISTRIBUTE REVISED REPORT FORMS TO PARTICIPATING COMPANIES AND WORK WITH PARTICIPANTS TO ENSURE CORRECT REPORTING.

E. Unit Ventilator By State Report

Ms. Michael reported that AHRI staff has analyzed the data collected for 1st quarter 2010 to 2nd quarter 2011 and noted some discrepancies between data in monthly and by state reports. Canadian data will be broken out by source (remote and integral) in both the by state report and monthly reports starting with January 2012 data collection.

ACTION: AHRI STAFF TO DISTRIBUTE REVISED REPORT FORMS TO PARTICIPATING COMPANIES AND WORK WITH PARTICIPANTS TO ENSURE CORRECT REPORTING.

F. Room Fan Coils Trading Area Report

Ms. Michael reported that a letter ballot, due by 22 November 2011, was sent out to the participants of the Room Fan Coils statistical program in response to an Applied Statistical Subcommittee suggestion to subdivide the current trading area report into Vertical, Vertical Stack and Horizontal units. (Executive Assistant’s Note: Six of nine companies responded to the

letter ballot. The measure passed with five voted in favor and one voted against the proposed revision. Data



collection for 2012 will be by pipe delimited/flat file upload into STARS. The flat file validation format is included. Please see Exhibit 2 for the flat file validation format for RFC-5-Q.)

G. AHU Vertical Market

Ms. Michael presented the form, definitions (Exhibit 3), and instructions created by the Liquid Chillers Section. AHU statistical participants have been asked to evaluate the vertical market statistical program and contact AHRI staff if they are interested in tracking vertical markets for AHUs.

ACTION: CONTACT AHRI STAFF IF INTERESTED IN TRACKING AHUS BY VERTICAL MARKET.

9. REGULATORY ACTIVITIES

A. California Title 24 – Motor Efficiency Measures

AHRI has been monitoring the code change proposals for the 2013 update of Title 24 – California’s building energy efficiency standard. During one of its staff workshops, the California Energy Commission (CEC) considered code language recommendations with respect to motors; and, AHRI worked with members of the Section to develop comments for CEC’s consideration. Several section members including John Bade, Gus Faris, Darcy Lee, Kim Sabatino, and Jerry Sipes volunteered to form a working group and work with members of the Air Control and Distribution Devices and Blowers, Fans and Motors Sections.

Staff will engage Section members to work further with CEC and Taylor Engineering.

(Executive Assistant’s Note: A conference call meeting of staff and Section members was held with CEC and Taylor Engineering on 21 November 2011. AHRI agreed to provide Taylor Engineering with some data and draft code language. A subsequent meeting of AHRI staff and Section members with CEC and Taylor Engineering is scheduled for 7 December 2011.)

B. IGCC GEW 157-11 Mr. Amrane reported that at public hearings on May 16-22, in Dallas TX, Pat McLaughlin, an AHRI consultant, presented comments regarding GEW 157-11, a 2011 proposed change to the International Green Construction Code (IGCC) Public Version 2.0. The Air Movement and Control Association International’s (AMCA) code change proposal passed



at the ICC Final Action Code Hearings in Phoenix, AZ on 2-6 November 2011. Please see Exhibit 4 for an unofficial copy of the language being inserted into the IGCC which will be published in March 2012.

10. INSTALLATION OF OFFICERS

AHRI staff acknowledged Mr. Kindle for his time and dedication to the ACHT Section and presented him with a Certificate of Appreciation. Mr. Kindle announced Mr. Woodbury, Johnson Controls, Inc., as Chairman and Mr. Faris, Nailor Industries Inc., as Deputy Chairman of the ACHT Section effective until November 2013. Additionally, Mr. Kindle announced that the Subsection Chair and Deputy Chairs, as follows:

ACHC Subsection:

• Chair: Mr. Rick Larson (Coilmaster Corp.) • Deputy: Mr. John Bade (Johnson Controls, Inc.)

AHU Subsection:

• Chair: Mr. Tom Buswell (Carrier Corporation) • Deputy: Mr. Skip Ernst (McQuay International)

RFC Subsection:

• Chair: Ms. Darcy Lee (Trane) • Deputy: Mr. Kim Sabatino (International Environmental Corp.)

UVNT Subsection:

• Chair: Mr. Ron Duncan (Magic Aire) • Deputy: Ms. Darcy Lee (Trane)

11. OTHER BUSINESS

Several new business items were introduced by a motion and seconded for discussion at the meeting.

A. Statistics – ACHC By State Report

Ms. Michael reported that the Applied Statistical Subcommittee finalized the ACHC by state report at the 15 September 2011meeting. Data is to be collected year-to date for U.S. dollars only starting in the first quarter of 2012.

ACTION: AHRI STAFF TO DISTRIBUTE THE FLAT FILE VALIDATIONS FOR THIS REPORT. MEMBERS WILL UPLOAD DATA DIRECTLY INTO STARS.



B. Regulatory – ASHRAE 90.1 Addendum u Mr. Amrane reported Addendum u is back in committee based on comments received during the advisory public review process. One of the comments was a proposal to exempt AHRI certified AHUs.

12. DATE AND PLACE OF NEXT MEETING

The next regularly scheduled meeting of the Section will be held during the 2012 AHRI Spring Meeting from 9 – 11 May 2012 at the Crystal Gateway Marriott in Arlington, Virginia.

13. EXECUTIVE SESSION

Mr. Kindle reported that the Executive Session would follow immediately after the Open Session. Executive Session materials were provided to members only.

14. ADJOURNMENT

Following the Executive Session, the Chairman adjourned the meeting at 5:16 p.m.

Respectfully submitted,

Laura G. Petrillo, PE Executive Assistant

Exhibits:

1. ACHT statistical definitions 2. Revised form RFC-5-Q flat file format 3. Liquid Chillers vertical market definitions 4. 2011 proposed changes IGCC updates

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n P

rog

ram

ratin

gs a

re v

erifie

d b

y te

st:

a. A

ve

rag

e to

tal co

olin

g o

r he

atin

g ca

pa

city, B

tu/h

[W]

b. A

ir pre

ssure

dro

p th

rou

gh

coil a

t stan

da

rd a

ir de

nsity

, in H

2O

[kP

a]

c.W

ate

r,o

ra

qu

eo

us

eth

yle

ne

gly

col,

or

aq

ue

ou

sp

rop

yle

ne

gly

col

solu

tion

sp

ressu

red

rop

thro

ug

hco

il(in

clud

ing

he

ad

ers)

at

av

era

ge

fluid

de

nsity

, ft of flu

id [m

of flu

id]

Central Station Air Handling Units

(AHU)

Ace

ntra

l-statio

na

ir-ha

nd

ling

un

itis

afa

ctory

-ma

de

en

case

da

ssem

bly

con

sisting

of

afa

no

rfa

ns

an

d

the

oth

er

ne

cessa

rye

qu

ipm

en

tto

pe

rform

on

eo

rm

ore

of

the

fun

ction

so

fcircu

latin

g,

clea

nin

g,

he

atin

g,

coo

ling

,h

um

idify

ing

,d

eh

um

idify

ing

an

dm

ixin

go

fa

ir,b

ut

wh

ichd

oe

sn

ot

inclu

de

aso

urce

of

he

atin

go

rco

olin

g.

Th

isd

ev

iceis

cap

ab

leo

fu

sew

ithd

uctw

ork

of

tota

lsta

ticre

sistan

ceo

fa

tle

ast

¼in

.

wa

ter.

Ce

ntra

lsta

tion

air

ha

nd

ling

un

its,m

oto

rd

rive

nfa

nty

pe

,fo

ru

sew

itha

rem

ote

or

ex

tern

al

sou

rceo

fco

olin

g

an

dfo

rh

ea

ting

,a

nd

/or

ve

ntila

ting

,co

nsistin

go

fa

coil

(wh

ere

ap

plica

ble

),fa

n,

an

de

nclo

sure

,n

ot

inclu

din

g

un

itsh

av

ing

dire

cte

xp

an

sion

coils

wh

icha

rein

corp

ora

ted

by

the

ma

nu

factu

rer

ina

ma

tche

dsp

litsy

stem

air

con

ditio

ne

ro

ra

so

the

rwise

de

fine

din

the

pro

du

ctsco

pe

de

finitio

no

fo

the

rA

HR

Ip

rod

uct

sectio

ns.

(Th

is

sub

sectio

n is re

spo

nsib

le fo

r all ce

ntra

l statio

n a

ir ha

nd

ling

un

its rate

d a

nd

sold

sep

ara

tely

.)

Sco

pe

of th

e C

ertifica

tion

Pro

gra

m

Th

eC

ertifica

tion

Pro

gra

min

clud

es

all

sizes

of

Ce

ntra

lS

tatio

nA

ir-Ha

nd

ling

Un

itsa

sd

efin

ed

inS

ectio

n3

.(S

ectio

n3

:C

en

tral

Sta

tion

Air-H

an

dlin

gU

nit

(CS

AH

U).

Afa

ctory

-ma

de

en

case

da

ssem

bly

con

sisting

of

afa

no

rfa

ns

an

do

the

rn

ece

ssary

eq

uip

me

nt

top

erfo

rmo

ne

or

mo

reo

fth

efu

nctio

ns

of

circula

ting

,cle

an

ing

,h

ea

ting

,co

olin

g,

hu

mid

ifyin

g,

de

hu

mid

ifyin

ga

nd

mix

ing

of

air.

Itsh

all

no

tco

nta

ina

sou

rceo

fco

olin

g.

Th

isa

ssem

bly

isca

pa

ble

of

use

with

du

ctw

ork

ha

vin

ga

tota

lsta

ticre

sistan

ceo

fa

tle

ast

0.5

in H

2O

[0.1

kP

a].)

Ce

rtified

Ra

ting

s:

Th

e fo

llow

ing

Ce

rtificatio

n P

rog

ram

ratin

gs a

re v

erifie

d b

y te

st:

1. F

an

Sp

ee

d, rp

m [re

v/s]

2. F

an

Sh

aft P

ow

er, b

hp

[W]

Room Fan Coil Units (RFC)

Ro

om

fan

-coil

un

itsw

hich

are

facto

ry-m

ad

ea

ssem

blie

sp

rov

idin

gth

efu

nctio

ns

of

circula

tion

,co

olin

go

r

coo

ling

an

dh

ea

ting

,a

nd

filterin

go

fa

ir,b

ut

wh

ichd

on

ot

inclu

de

the

sou

rceo

fco

olin

ga

nd

/or

he

atin

g.

Th

ese

de

vice

sa

ren

orm

ally

de

sign

ed

for

free

de

live

ryo

fa

irin

toa

roo

mb

ut

ma

yb

ea

pp

lied

with

min

ima

ld

uct-w

ork

ha

vin

ga

static

resista

nce

ge

ne

rally

no

te

xce

ed

ing

¼"

of

wa

ter.

Th

ese

de

vice

sm

ay

be

de

sign

ed

for

furre

d-in

ap

plica

tion

with

inth

eco

nd

ition

ed

spa

ce,

do

es

no

tin

clud

ea

sou

rceo

fco

olin

g.

Th

ese

de

vice

sa

reg

en

era

llyd

esig

ne

din

sizes

of

less

tha

n1

50

0C

FM

air

de

live

ry.

Re

po

rtV

ertica

lS

tack

,

Ve

rtical (w

all o

r floo

r mo

un

ted

) an

d H

orizo

nta

l.

Ro

om

fan

coil

air

con

ditio

ne

ru

nits

wh

icha

refa

ctory

ma

de

asse

mb

lies

pro

vid

ing

the

fun

ction

so

fcircu

latio

n,

coo

ling

an

dh

ea

ting

,a

nd

filterin

go

fa

ir,b

ut

wh

ichd

on

ot

inclu

de

the

sou

rceo

fco

olin

go

rh

ea

ting

.T

he

se

de

vice

sa

ren

orm

ally

de

sign

ed

for

free

de

live

ryo

fa

irin

toa

roo

m,

bu

tm

ay

be

ap

plie

dw

ithm

inim

al

du

ctwo

rk

ha

vin

ga

static

resista

nce

ge

ne

rally

no

te

xce

ed

ing

l/4"

of

wa

ter.

Th

ese

de

vice

sm

ay

be

de

sign

ed

for

furre

din

ap

plica

tion

,o

rw

itha

ne

nclo

sure

for

ap

plica

tion

with

inth

eco

nd

ition

ed

spa

ce.

Th

ese

de

vice

sa

reg

en

era

lly

de

sign

ed

in size

s of le

ss tha

n 1

50

0 cfm

air d

eliv

ery

.

Sco

pe

of th

e C

ertifica

tion

Pro

gra

m:

Th

ece

rtificatio

np

rog

ram

inclu

de

sR

oo

mF

an

-Co

ilsa

sd

efin

ed

inS

ectio

n3

,h

av

ing

air-d

eliv

ery

cap

acitie

so

f1

50

0cfm

[0.7

08

0

m3

/s]o

rle

ss.R

oo

mF

an

-Co

ilse

mp

loy

ing

Vo

latile

Re

frige

ran

tC

oils

or

stea

mco

ils,ce

ntra

l-statio

na

ir-ha

nd

ling

un

itsa

sd

efin

ed

in

AH

RI S

tan

da

rd 4

30

, an

d u

nit v

en

tilato

rs as d

efin

ed

in A

RI S

tan

da

rd 8

40

are

no

t inclu

de

d.

Ce

rtified

Ra

ting

s:

Th

e fo

llow

ing

certifica

tion

pro

gra

m ra

ting

s sha

ll be

ve

rified

by

test a

t the

Sta

nd

ard

Ra

ting

Co

nd

ition

s for C

oo

ling

Ca

pa

city (S

ectio

n 6

.3.1

), an

d fo

r po

we

r inp

ut (S

ectio

n 6

.3.4

):

1. T

ota

l Co

olin

g C

ap

acity

, Btu

/h [W

]

2. S

en

sible

Co

olin

g C

ap

acity

, Btu

/h [W

]

3. P

ow

er In

pu

t, W [W

]

Co

nfo

rma

nce

toth

ere

qu

irem

en

tso

fth

ein

sula

tion

efficie

ncy

test

an

dth

elo

wv

olta

ge

test

(Se

ction

8)

sha

lla

lsob

ev

erifie

db

y

test.

Unit Ventilators (UVNT)

Ro

om

Un

itV

en

tilato

rs(C

oo

ling

,h

ea

ting

,o

rco

olin

ga

nd

he

atin

gco

il(s))R

em

ote

So

urce

.A

facto

ry-

ma

de

asse

mb

lyw

hich

pro

vid

es

the

fun

ction

so

fco

olin

g,

he

atin

g,

or

coo

ling

an

dh

ea

ting

coil(s),

bu

t

wh

ichd

oe

sn

ot

inclu

de

the

sou

rceo

fco

olin

go

rh

ea

ting

.T

his

de

vice

isn

orm

ally

de

sign

ed

for

the

free

de

live

ryo

fa

irin

toa

roo

m,

bu

tm

ay

be

ap

plie

dw

ithm

inim

al

du

ctwo

rkh

av

ing

asta

ticre

sistan

ce

ge

ne

rally

no

te

xce

ed

ing

0.4

5in

.o

fw

ate

rg

au

ge

.T

he

sed

ev

ices

ma

yb

ed

esig

ne

dfo

rflo

or

mo

un

ted

ap

plica

tion

or

for

ceilin

gh

un

ga

pp

licatio

n.

Th

eca

bin

et

of

the

de

vice

isa

tm

inim

um

18

ga

ug

ea

nd

ha

s

an

ap

plia

nce

gra

de

finish

.U

nits

are

also

eq

uip

pe

dw

ithv

en

tilatio

na

nd

retu

rna

ird

am

pe

rsca

pa

ble

of

intro

du

cing

up

to 1

00

% o

utsid

e a

ir.

Ro

om

Un

itV

en

tilato

rs(C

oo

ling

an

dH

ea

ting

)In

teg

ral

So

urce

.A

refrig

era

tion

syste

min

stalle

din

a

cab

ine

tsim

ilar

ind

esig

na

nd

fun

ction

toa

Ro

om

Un

itV

en

tilato

rR

em

ote

So

urce

.It

inclu

de

s

refrig

era

tion

com

po

ne

nts,

sep

ara

ble

ou

tdo

or

lou

ve

rs,fo

rced

ve

ntila

tion

,a

nd

he

atin

ga

va

ilab

leb

y

pu

rcha

ser’s

cho

iceo

f,a

tle

ast,

ho

tw

ate

r,e

lectric

resista

nce

he

at,

or

rev

erse

cycle

refrig

era

tion

.U

nits

are

also

eq

uip

pe

dw

ithv

en

tilatio

na

nd

retu

rna

ird

am

pe

rsca

pa

ble

of

intro

du

cing

up

to1

00

%o

utsid

e

air.

Th

e fo

llow

ing

ex

cep

tion

s are

ma

de

for th

e P

rog

ram

:

–T

ha

tth

isP

rog

ram

do

es

no

ta

pp

lyto

the

testin

ga

nd

ratin

go

fin

div

idu

al

asse

mb

lies,

such

as

fan

so

r

coils, a

s a b

asis fo

r ratin

g th

e co

mb

ine

d u

nit.

–T

ha

tth

isP

rog

ram

do

es

no

ta

pp

lyto

un

itse

mp

loyin

gvo

latile

-refrig

era

nt

coils

or ste

am

coils.

–T

ha

tth

isP

rog

ram

do

es

no

ta

pp

lyto

cen

tral-sta

tion

air-h

an

dlin

gu

nits

as

de

fine

din

AR

IS

tan

da

rd4

30

or

roo

mfa

n-co

ilsa

sd

efin

ed

inA

RI

or

pa

cka

ge

term

ina

la

ir-con

ditio

ne

ra

nd

pa

cka

ge

dte

rmin

al

he

at

pu

mp

s as d

escrib

ed

in A

RI S

tan

da

rd 3

10

/38

0.

Fa

ctory

-ma

de

un

itv

en

tilato

rsfo

ra

lla

pp

licatio

ns

an

dsize

s.A

un

itv

en

tilato

ris

an

institu

tion

al

typ

ea

ssem

bly

,

eq

uip

pe

dw

ithv

en

tilatio

na

nd

retu

rna

ird

am

pe

rsca

pa

ble

of

intro

du

cing

ve

ntila

tion

air

of

at

lea

st8

0%

of

rate

d

stan

da

rd a

ir flow

, wh

ile a

lso p

rov

idin

g th

e fu

nctio

ns o

f circula

ting

or h

ea

ting

, he

atin

g o

r coo

ling

an

d filte

ring

air.

Th

eso

urce

of

hu

mid

ityco

ntro

l,h

ea

ting

or

coo

ling

sup

ple

me

nta

ryto

tha

tfro

mv

en

tilatio

na

ir,m

ay

be

rem

ote

of

an

inte

gra

lp

art

of

the

un

ititse

lf.T

his

eq

uip

me

nt

isd

esig

ne

dfo

rfre

ed

eliv

ery

of

air

into

aro

om

bu

tm

ay

be

ap

plie

dw

ithm

inim

al

du

ctw

ork

ha

vin

ga

static

resista

nce

no

rma

llyn

ot

ex

cee

din

g0

.50

inch

es

wa

ter

colu

mn

.

Th

is eq

uip

me

nt is p

rov

ide

d w

ith a

ir cap

acitie

s of 3

00

0 cfm

or le

ss.

Ex

clud

ed

are

ind

ivid

ua

la

ssem

blie

ssu

cha

sa

coo

ling

or

he

atin

gse

ction

for

sep

ara

teu

se,

an

dth

efo

llow

ing

eq

uip

me

nt:

1. R

oo

m a

ir-con

ditio

ne

rs as d

efin

ed

in A

HA

M sta

nd

ard

RA

C-1

.

2. R

oo

m fa

n-co

il an

d a

ir ind

uctio

n u

nits a

s de

fine

d in

AH

RI sta

nd

ard

s 44

0 a

nd

44

5.

3. P

ack

ag

ed

term

ina

l air-co

nd

ition

ers a

nd

he

at p

um

ps a

s de

fine

d in

AH

RI sta

nd

ard

31

0/3

80

.

4. C

en

tral-sta

tion

air h

an

dlin

g u

nits a

s de

fine

d in

AH

RI sta

nd

ard

43

0.

Sco

pe

.T

his

stan

da

rda

pp

lies

toa

llfa

ctory

-ma

de

eq

uip

me

nt

as

de

fine

din

the

follo

win

gsta

nd

ard

sw

hich

also

me

et

the

req

uire

me

nts o

f 3.4

an

d a

re la

be

led

as a

un

it ve

ntila

tor.

a. R

oo

m fa

n-co

il air-co

nd

ition

ers, A

HR

I Sta

nd

ard

44

0 (fo

rme

rly A

RI S

tan

da

rd 4

40

).

b. P

ack

ag

ed

term

ina

l air-co

nd

ition

ers, A

HR

I Sta

nd

ard

31

0/3

80

(form

erly

AR

I Sta

nd

ard

31

0/3

80

).

c. Un

itary

air-co

nd

ition

ers a

nd

he

at p

um

p u

nits, A

HR

I Sta

nd

ard

21

0/2

40

(form

erly

AR

I Sta

nd

ard

21

0/2

40

).

d. W

ate

r-sou

rce h

ea

t pu

mp

s, AH

RI S

tan

da

rd 3

20

(form

erly

AR

I Sta

nd

ard

32

0).

e. G

rou

nd

wa

ter-so

urce

he

at p

um

ps, A

HR

I Sta

nd

ard

32

5 (fo

rme

rly A

RI S

tan

da

rd 3

25

).

f. Gro

un

d so

urce

close

d-lo

op

he

at p

um

ps, A

HR

I Sta

nd

ard

33

0 (fo

rme

rly A

RI S

tan

da

rd 3

30

).

Ex

clusio

ns. T

his sta

nd

ard

do

es n

ot a

pp

ly to

eq

uip

me

nt a

s de

fine

d in

the

follo

win

g sta

nd

ard

s:

a. R

oo

m a

ir-con

ditio

ne

rs, AH

AM

Sta

nd

ard

RA

C-1

or A

NS

I Sta

nd

ard

Z2

34

.1.

b. C

en

tral-sta

tion

air-h

an

dlin

g u

nits, A

HR

I Sta

nd

ard

43

0 (fo

rme

rly A

RI S

tan

da

rd 4

30

).

AHRI 2011 Annual Meeting ACHT Section Minutes Exhibit 1 - Pg 1 of 1

Validation for Room Fan Coils Units/Dollars Trading Area Flat File

Field Name Column Max. Size

Report Type A 9

Acceptable Formats: RFC-5-Q (Based on Orders Only)


Month B 2

Acceptable Values: 03, 06, 09, 12 Accept either 'M' or 'MM'; example: 1 or 01 Combination of month and year field which should match the assigned month and assigned year


Year C 4

Acceptable format: YYYY, only accept numerical values Combination of month and year field which should match the assigned month and assigned year

Field Name Column Max. Size Description

Company Code D 3 Standard ARI company number


Trading Area Number E 3

These lines must be indicated in column E;

1 46 95 137 179 221 262 305 348 390 432 475 518 564 607 765

2 47 96 138 180 222 263 306 349 391 433 476 519 565 608 767

3 48 97 140 181 223 264 307 350 392 434 477 520 566 609 769

4 49 98 141 182 224 265 308 351 393 435 478 521 567 610 771

5 50 99 142 183 225 266 309 352 394 436 479 524 568 611 773

6 51 100 143 184 226 267 310 353 395 437 480 525 569 612 775

7 52 101 144 185 227 268 311 354 396 438 481 526 570 613 777

9 53 102 145 186 228 269 312 355 397 439 482 527 571 614 779

10 54 103 146 187 229 270 313 356 399 440 484 528 572 615 781




Vertical Units F 12

Do not accept blanks

Whole numbers only; No decimals, no commas

11 55 104 147 188 230 271 314 357 400 441 485 530 574 701 783

12 57 105 148 189 231 273 315 358 401 442 486 531 575 703 785

13 58 106 149 190 232 274 316 359 402 443 487 532 576 705 787

15 59 107 150 191 233 275 317 360 403 444 489 534 577 707 789

16 60 108 151 192 234 276 318 361 404 445 490 535 579 709 791

17 61 109 152 193 235 277 319 362 405 446 491 536 580 711 793

18 62 110 153 194 236 278 320 363 406 447 492 537 581 713 795

19 63 111 154 196 237 279 321 364 407 448 493 538 582 715 797

20 64 112 155 197 238 281 322 365 408 450 494 539 583 717 799

21 65 113 156 198 239 282 323 366 409 451 495 540 584 719 801

22 66 114 157 199 240 283 324 367 410 452 496 541 585 721 803

23 67 115 158 200 241 284 325 368 411 454 497 543 586 723 805

24 68 116 159 201 242 285 326 370 412 455 498 544 587 725 807

25 70 117 160 202 243 286 327 371 413 456 499 545 588 727 809

26 72 118 161 203 244 287 328 372 414 457 500 546 589 729 811

27 73 119 162 204 245 288 329 373 415 458 501 547 590 731 813

28 75 120 163 205 246 289 331 374 416 459 502 548 591 733 815

29 78 121 164 206 247 290 332 375 417 460 503 549 592 735 817

30 81 123 165 207 248 291 333 376 418 461 504 550 593 737 819

31 82 124 166 208 249 292 334 377 419 462 505 551 594 739 821

32 83 125 167 209 250 293 335 378 420 463 506 552 595 741 823

33 84 126 168 210 251 294 336 379 421 464 507 553 596 743 825

35 85 127 169 211 252 295 337 380 422 465 508 554 597 745 827

36 86 128 170 212 253 296 338 381 423 466 509 555 598 747 829

37 87 129 171 213 254 297 340 382 424 467 510 556 599 749 831

38 88 130 172 214 255 298 341 383 425 468 511 557 600 751 833

39 89 131 173 215 256 299 342 384 426 469 512 558 601 753 835

40 90 132 174 216 257 300 343 385 427 470 513 559 602 755 837

41 91 133 175 217 258 301 344 386 428 471 514 560 603 757

42 92 134 176 218 259 302 345 387 429 472 515 561 604 759

43 93 135 177 219 260 303 346 388 430 473 516 562 605 761

44 94 136 178 220 261 304 347 389 431 474 517 563 606 763

860 861 862 863 864 865 866 867 868 869 870 871 872 890




Vertical Dollars G 12




Vertical Stack (High Rise) Units H 12




Vertical Stack (High Rise) Dollars I 12




Horizontal Units J 12




Horizontal Dollars K 12



Example: RFC-5-Q|9|2012|197|1|2|123|2|567|1|1012



RFC-5-Q|9|2012|197|9|1|123|4|567|5|1012 RFC-5-Q|9|2012|197|11|2|123|6|567|9|1012 RFC-5-Q|9|2012|197|48|3|123|8|567|4|1012 RFC-5-Q|9|2012|197|55|4|123|10|567|5|1012 RFC-5-Q|9|2012|197|278|5|123|12|567|6|1012 RFC-5-Q|9|2012|197|311|9|123|14|567|7|1012 RFC-5-Q|9|2012|197|437|7|123|16|567|9|1012 RFC-5-Q|9|2012|197|527|10|123|18|567|10|1012


Liquid Chillers Vertical Market Definitions

1. Stores and Restaurants /Retail All commercial retail establishments including eating and drinking places,

food stores, Shopping centers, strip malls, enclosed malls, etc.

2. Warehouses (excl. manufacturer owned) Public warehousing, refrigerated warehousing (excludes manufacturer owned

warehouses – reported under manufacturing)

3. Real Estate/Financial/Office Space Accounting, auditing, bookkeeping; advertising; credit reporting and

collection agencies; depository institutions, engineering, architectural, surveying services; holding and other investment services; Apartment Building , residential space, commercial art & stenography; management and public relations services, membership organizations, non-depository credit institutions, operators of non-residential buildings, real estate agents and managers; research, development, and testing services; security and commodity brokers, dealers, exchanges; title abstract offices; travel agencies; Insurance agents, brokers and services

4. Parking Garages and Automotive Services Automotive repair shops, parking structures

5. Manufacturing Facilities and Warehouses

Manufacturing plants, warehouses (manufacturer owned)

6. Education K-12 Elementary, Secondary schools, Junior high, Senior high

7. Healthcare

Doctor, dentist, other medical offices, hospitals, outpatient care facilities, skilled nursing and personal care facilities, clinics, convalescent facilities

8. Government Buildings Executive, legislative, judicial, general government, public order and safety,

U.S. post offices, police/ fire stations, Capitals, city halls, other government service buildings, armories, military


9. Religious Buildings Religious organizations, churches, synagogues, mosques, sunday schools

10. Assembly, Arenas, and Recreation

Amusement, social, recreational buildings, animal / fish / plant facilities; auditoriums, bowling alleys, clubs and lodges, dance halls, coliseums; motion picture theaters, (professional) gyms / field houses / arenas

11. Miscellaneous Nonresidential Buildings

Studios and schools, YMCA, exhibit halls, museums, art galleries, funeral homes, steam and air-conditioning supply

12. Lodging Hotels and motels

13. Higher Education

Dormitories, Universities, colleges, libraries, (college) gyms / field houses / arenas, vocational schools

14. High Tech: Computers Electronics, Telecommunications Communication buildings; radio and television stations, telephone

communications, computer and data processing services

15. Life Sciences, Pharm, Biotech Laboratories (manufacturer owned), pharmaceuticals

16. Airports & Transportation

Aircraft service; airports, bus terminals, freight terminals, railroad terminals, truck services


INTERNATIONAL CODE COUNCIL 2011 CODE DEVELOPMENT CYCLE

UPDATES TO THE 2011 PROPOSED CHANGES TO THE

INTERNATIONAL GREEN CONSTRUCTION CODETM – PV 2.0 INTERNATIONAL SWIMMING POOL AND SPA CODETM – PV 1.0

AND

ANALYSIS OF PROPOSED NEW REFERENCED STANDARDS

May 16 – 22, 2011 SHERATON HOTEL


2011 IGCC CODE DEVELOPMENT CYCLE

UPDATES TO THE 2011 PROPOSED CHANGES TO THE

INTERNATIONAL GREEN CONSTRUCTION CODETM PUBLIC VERSION 2.0

4/15/2011

Updated 4/26/2011

INCLUDES UPDATES TO:

PV2.0 ERRATA TENTATIVE HEARING ORDERS

CHAPTER 1 CHAPTER 6 APPENDIX C

SUMMARY OF UPDATES

4/15/2011:

INTRODUCTION: Page vii ................................................... PV2.0 Errata

TENTATIVE HEARING ORDER:

Pages 2-4 ............................................... IGCC-Energy/Water (see revised hearing order) Pages 656-659 ....................................... IGCC-General (see revised hearing order) PROPOSED CODE CHANGES: CHAPTER 1 Add GG762-11 Add GG763-11 APPENDIX C Page 653 ................................................ GEW472-11 has been withdrawn

4/26/2011:

CHAPTER 6 Page 269 ................................................ GEW157-11

**Page numbers shown on this page, reflect the page numbers in the 2011 IGCC Code Change Proposals monograph**

1


Updated 4/26/2011

CHAPTER 6 CODE CHANGE PROPOSALS Revise GEW157-11 as follows: GEW157 – 11 202, 607.2.2.3, Chapter 12 (New) Proponent: Amanda Hickman, InterCode Incorporated, representing Air Movement and Control Association ([email protected]) Revise as follows: 607.2.2.3 Ventilating fans Mimimum Fan Efficiency. Ventilating fans shall comply with the requirements of the ENERGY STAR program. Stand alone supply, return and exhaust fans shall have an energy efficiency classification of not less than FEG71 as defined in AMCA 205-10. The total efficiency of the fan at the design point of operation shall be within 10 percentage points of either the maximum total efficiency of the fan or the static efficiency of the fan.

Add new definition as follows:

SECTION 202 DEFINITIONS

FAN EFFICIENCY GRADE (FEG). A numerical rating identifier that specifies the fan’s aerodynamic ability to convert shaft power, or impeller power in the case of a direct driven fan, to air power. FEGs are based on fan peak (optimum) energy efficiency that indicates the quality of the fan energy usage and the potential for minimizing the fan energy usage. Add new standard as follows:

CHAPTER 12 REFERENCED STANDARDS

AMCA Air Movement and Control Association International

30 West University Dr Arlington Heights IL 60004-1806

205-10 Energy Efficiency Classification for Fans Reason: The current section calls for ventilating fans to comply with the requirements of Energy Star. However, the fan requirements for Energy Star are for residential construction and therefore are not appropriate for this code. AMCA 205 Energy Efficiency Classification for Fans is for commercial construction, and is appropriate for this code. It was developed under a rigorous process by fan manufacturers within AMCA International, in conjunction with professionals from ASHRAE and has been very well vetted through the ASHRAE 90.1 TC 5.1 task force. The current practice for fan selection is based on fan static pressure rather than total pressure, despite the fact that the pressure required by a system must be satisfied by the fan total, not static, pressure. As a result, static efficiency has been used as the measure of efficiency because it conveniently tied the fan power to the commonly used fan pressure. For HVAC systems, the fan is a motor-driven machine for delivering air. The fan energy input is from the motor shaft. The inlet and outlet of the fan are used as control surfaces in determining the energy transferred to the air by the fan. Therefore, the energy the fan delivers to the air is the difference in total energy between these control surfaces. This energy has generally two components – the dynamic one, because the air is in the motion, and the static one. The sum of both is the total energy delivered by the fan into the air. The ratio of this energy to the energy delivered by the motor is the fan energy efficiency and is also, and more frequently, called the fan total efficiency. This characteristic reflects the quality of the aerodynamic design of the fan and in no way reflects how this energy can be used in a fan application. However, there is no reason to penalize the use of the fan static efficiency because it may be used for other purposes. Fan energy efficiency is a function of flow, even for operation at constant speed. At very low flow, this efficiency is low but increases with increasing flow. At some particular flow, the efficiency reaches a maximum and this value is frequently referred to as 'peak,' or, 'optimal,' efficiency. With further increasing flow, the efficiency decreases. The fan designer and manufacturer are responsible for the fan energy efficiency, while the HVAC system designer and the system user are responsible for the use of the fan energy. In other words, to get the minimum energy consumption for a given purpose, the fan efficiency has to be high and the fan has to be operated at or near its peak energy efficiency. This new approach to the energy classification for fans was designed by a large group of professionals organized in different bodies within AMCA International and ASHRAE. The cornerstones of the approach were:

13


http://www.energystar.gov/index.cfm?c=vent_fans.pr_vent_fans�

• the classification has to be based on the fan energy efficiency; i.e. fan total efficiency; the classification should allow regulative bodies easy and meaningful declaration of fan energy efficiency requirements for immediate needs as well as to indicate the requirement for further reduction of fan energy use;

• the classification must encourage the fan manufacturers to improve the energy efficiency of their homologous products; • the fan peak total efficiency of a fan product line is dependent on fan size; • the classification should, when possible, keep a product line in one efficiency grade.

As a result, the fan efficiency grades (FEG) were defined as areas between two adjacent efficiency limits. The limits were shaped to follow the efficiency dependence on the fan size. The actual shapes of these limits were agreed upon after matching these shapes into the test data collected from national and international sources. The spacing of these limits was chosen to make the areas approximately equal for all grades. The relative difference between the upper the lower limit for any grade is approximately 6%. The grade boundaries are depicted in Figure 1. It was assumed that the FEG will be based on certified fan performance data and each fan size in the fan series will be assigned a grade label. In the proposed classification system, either all fan sizes of a series may be assigned the same grade label, or groups of adjacent sizes may be assigned the same label. For an example of grade assignment of a fan given the peak total efficiency, see Figure 2. The idea of establishing separate FEG’s for each fan category (e.g., centrifugal fans with airfoil blades, vaneaxial fans, plenum fans, etc.) was abandoned in the early stages of the development process because it did not make any sense to encourage the use of any fan category with low fan energy efficiency when the goal is to reduce the energy used by fans. Fans which do not fit into the energy efficiency requirement should not be used regardless of category. The combination of the fan and motor was also considered for classification, but it was concluded that would be counterproductive to the effort because it would make the responsibility areas ambiguous. In many instances, the motor is not part of the fan delivery, and in other instances, the motor efficiency level is dictated by the customer. Furthermore, during the fan selection process, it is acceptable to select the fan on the basis of its energy efficiency and make the requirements for the motor efficiency the responsibility of the motor manufacturer. In addition, a motor’s efficiency may be regulated by another authority. For example, in the US, public law requires minimum efficiencies for motors with power ratings of 1 horsepower or greater. It was also agreed that in order to achieve the expected energy savings, the fans must have high peak efficiency but also must be operated near peak efficiency. Therefore, two additional measures were proposed. First, the fan must be selected near peak efficiency for all expected operating points. The fan efficiency at any operating point should not be more than 10% (points) less than the fan peak total efficiency (see Figure 3). This requirement will go a long way toward correcting the tendency to weigh initial cost far more than operating cost. Secondly, if the fan is intended to operate only part of the time or has been selected for multiple operating points, possibly at different fan speeds, the overall energy consumption of the fan over a year must be calculated using estimated times of operation for each point (see Figure 4). This requirement is important because it opens up the possibility for a regulatory body to make exceptions from application required FEG’s because the overall energy used by the fan is acceptably small. The fan manufacturers within AMCA International, in conjunction with professionals from ASHRAE, have designed a program to allow long term program for reduction of energy consumption by fans. The program includes labeling fans for their energy efficiency and adds requirements for fan selection and use at high levels of fan peak energy efficiency. It also opens the opportunity for possible exceptions when the fan energy consumption in a year falls below some limit, which could be defined by a regulatory body. The program allows a regulatory body to simply and effectively define fan energy efficiency requirements for immediate as well as future needs. A fan efficiency grade of 71 was chosen for the International Green Construction Code because it is an above code program and therefore this would be an appropriate level of stringency for this code. An FEG of 67 was selected for ASHRAE 90.1 since it is a base standard. The classification system for fan energy efficiency contained within AMCA standard 205 is currently part of the ISO 12759, is in the drafting process at ASHRAE 90.1 and should also be made a part of this code.

14


Figure 1 - Fan Efficiency Grades (FEG) for fans without drives Notes: 1. Fan size is the impeller diameter. 2. The optimum (peak) fan efficiency can be calculated from the total fan pressure. 3. The FEG label for a given fan size is assigned when the optimum (peak) fan efficiency is equal or lower than the efficiency at the grade upper limit and higher than the efficiency at the grade lower limit for the fan size. 4. No label is considered for the fans with the optimum (peak) efficiency below FEG53 5. For any fan size equal or larger than 40 in. the values of the grade limits are the same as for the fan size of 40 in. 6. If this method is used for a direct driven fan without the shaft and bearings integral to the fan, the fan efficiency is the impeller efficiency.

15


Figure 2 – Scheme of a fan efficiency field over the fan size range for one fan efficiency grade (FEG) Legend: pTE peak total efficiency TE total efficiency

16


Figure 3 – Allowable fan energy efficiency and flow range for the fan selection for an application Legend: TP fan total pressure VP fan velocity pressure TE fan total (energy) efficiency Q flow Qmin , Qmax flow range for the allowable fan efficiency range

17


Figure 4 – Operation of a fan in the system at different operating points and calculation of yearly energy consumption by the fan Legend: Eyear estimated yearly energy consumption by the fan W1, W2, W3 fan power at three operating points t1, t2, t3 time of operation of the fan in hours in the course of a year Cost Impact: The code change proposal will not increase the cost of construction. Public Hearing: Committee: AS AM D Assembly: ASF AMF DF

607.2.2.3-HICKMAN

18


Documents

Open Session Meeting of Air-Conditioning and Heat Transfer