50224 Federal Register

Office of Conservation and

Renewable Energy

[Case No. F-0181

Energy Conservation Program for

Consumer Products; Decision and

Order Granting Waiver From Furnace

Test Procedures to Lennox Industries

AGENCY. Office of Conservation and

Renewable Energy, DOE.

ACTION: Decision and order.

Vol. 55, No. 234 / Wednesday, December 5, 1990 / Notices

consumption of certain consumer

products, including furnaces. The intent

of the test procedures is to provide a

comparable measure of energy

consumption that will assist consumers

in making purchasing decisions. These

test procedures appear at 10 CFR part

430, subpart B.

DOE has amended the prescribed test

procedures by adding 10 CFR 430.27 to

create the waiver process. 45 FR 64108,

September 26, 1980. Thereafter, DOE

further amended its appliance test

procedure waiver process to allow the

Assistant Secretary for Conservation

and Renewable Energy (Assistant

Secretary) to grant an interim waiver

from test procedure requirements to

manufacturers that have petitioned DOE

for a waiver of such prescribed test

procedures. 51 FR 42823, November 26,

1986.

The waiver process allows the

Assistant Secretary to waive

temporarily test procedures for a

particular basic model when a petitioner

shows that the basic model contains one

or more design characteristics which

prevent testing according to the

prescribed test procedures or when the

prescribed test procedures may evaluate

the basic model in a manner so

unrepresentative of its true energy

consumption as to provide materially

inadequate comparative data. Waivers

general remain in effect until final test

procedure amendments become

effective, resolving the problem that is

the subject of the waiver.

The interim waiver provisions, added

by the 1986 amendment, allows the

Assistant Secretary to grant an interim

waiver when it is determined that the

applicant will experience economic

hardship if the application for interim

waiver is denied, if it appears likely that

the petition for waiver will be granted

and/or the Assistant Secretary

determines that it would be desirable for

public policy reasons to grant immediate

relief pending a determination on the

petition for waiver. An interim waiver

remains in effect for a period of 180 days

or until DOE issues its determination on

the petition for waiver, and may be

extended for an additional 180 days, if

necessary.

Pursuant to § 430.27(g), the Assistant

Secretary shall publish in the Federal

Register notice of each waiver granted,

and any limiting conditions of each

waiver.

SUMMARY: Notice is given of the

Decision and Order (Case No. F-018)

granting Lennox Industries, Inc. a

waiver for its G20 and G20R series

atmospheric furnaces from existing DOE

test procedures.

FOR FURTHER INFORMATION CONTACT:

Car', E. Adams, U.S. Department of

Energy, Office of Conservation and

Renewable Energy, Forrestal Building,

Mail Station, CE-43, 1000

Independence Avenue, SW.,

Washington, DC 20585, (202) 586-9127.

Eugene Margolis, Esq., U.S. Department

of Energy, Office of General Counsel,

Mail Station, GC-i2, 1000

Independence Avenue, SW.,

Washington, DC 20585, (202) 586-9507

SUPPLEMENTARY INFORMATION: In

accordance with 10 CFR 430.27(g), notice

is hereby given of the issuance of the

Decision and Order as set out below. In

the Decision and Order, Lennox

Industries has been granted a waiver for

its G20 and G20R series atmospheric

furnaces permitting the company to use

an alternate test method. Today's

alternate test method is a modified

version of the test method requested by

Lennox and produces furnace

efficiencies slightly lower than the

Lennox requested method.

Issued in Washington, DC. November 30,

1990.

1. Michael Davis,

Assistant Secretary, Conservation and

Renewable Energy.

Decision and Order

The Energy Conservation Program for

Consumer Products (other than

automobiles) was established pursuant

to the Energy Policy and ConservationAct (EPCA). Public Law 94-163, 89 Stat.

917, as amended by the National Energy

Conservation Policy Act (NECPA),

Public Law 95-619, 92 Stat. 3266, the

National Appliance Energy

Conservation Act of 1987 (NAECA),

Public Law 100-12, and the National

Appliance Energy Conservation

Amendment of 1988 (NAECA 1988),

Public Law 100-357, and requires DOE

to prescribe standardized test

procedures to measure the energy

Background

On August 1, 1989, Lennox Industries

(Lennox) filed a "Petition for Waiver"

and an "Application for Interim Waiver"

regarding (a) Blower time delay and (b)

determination of the off-cycle draft

factor, DF, in accordance with § 430.27 of

10 CFR part 430. DOE published in the

Federal Register the Lennox petition and

solicited comments, data, and

information respecting the petition and

granted the requested Interim Waiver in

its entirety. 54 FR 50525 (December 7,

1989).

Comments were received from-the

American Gas Association (AGA),

Energen Corporation (Energen),

Southern Gas Association (SGA),

Oklahoma Natural Gas Company

(Oklahoma), Laclede Gas Company

(Laclede), Lone Star Gas Company

(Lone Star), Entex, and Michigan

Furnace Company (Michigan) all of

whom supported the waiver in its

entirety. Comments were received from

Amana, Snyder General Corporation

(Snyder General), Natural Resources

Defense Council (NRDC), Heil-Quaker

Corporation (Heil-Quaker), Carrier

Corporation (Carrier), Rheem

Manufacturing Company (Rheem), and

the California Energy Commission

(CEC), all of whom opposed the waiver

regarding the determination of DF. All

comments received were sent to Lennox

for its rebuttal. DOE consulted with the

Federal Trade Commission on

September 20, 1990, concerning the

Lennox petition.

Assertions and Determinations

Blower delay. Lennox seeks a waiver

from the DOE test provisions that

require 1.5 minute delay between the

ignition of the burner and the starting of

the circulating air blower. Instead,

Lennox requests the allowance to test

using a 45 second blower time delay

when testing its G20 and G20R series

gas furnaces. Lennox states that since

the 45 second delay is indicative of how

these models actually operate and since

such a delay results in an improvement

in efficiency of approximately 0.7

percent, the waiver should be granted.

Previous waivers for this type of

timed blower delay control have been

granted by DOE to the Coleman

Company. 50 FR 2710, January 18. 1985;

the Magic Chef Company, 50 FR 41553,

October 11, 1985; the Rheem

Manufacturing Company, 53 FR 48574,

December 1, 1988, and 55 FR 3253,

January 31; 1990; the Trane Company, 54

FR 19226, May 4,1989; DMO Industries,

55 FR 4004, February 8, 1990; the HeilQuaker Corporation, 55 FR 13184, April

9, 1990; the Carrier Corporation, 55 FR

13182, April 9, 1990; and the Rheem

Manufacturing Company, 55 FR 37521,

September 12, 1990.

Since DOE did not receive any

negative comments on this issue, the

Lennox petition has provided the basis

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for DOE's review of the blower delay

procedure. Based on the information

provided by the Petitioner and DOE's

review, DOE concluded that the existing

test procedure does not give comparable

results for the Lennox G20 and G20R

series gas furnaces and therefore DOE is

granting Lennox's request for an

alternate blower delay test procedure.

Determination of D. Lennox also

seeks a waiver from the DOE test

procedure that requires the use of an

assigned theoretical value of 1.0 for the

Dp of an atmospheric furnace. Lennox

states that the G20 and G20R series of

atmospheric furnaces incorporate an

electro-mechanical burner box damper

system that greatly restricts the flow

through the heat exchanger when the

damper is closed during the off-cycle

and that the damper restriction is

similar to that caused by a power burner

during the off-cycle. Thus, Lennox

claims it should be allowed to test to

determine the DF value, as allowed for

power burners. A resulting lower Dp

value will result in a higher Annual Fuel

Utilization Efficiency (AFUE).

Lennox states that the current test

method does not give credit for the

energy savings due to the reduced flow

and, as a result, provides materially

inaccurate comparative data. To be able

to take credit for the energy savings

resulting from the reduced flow, Lennox

requests a waiver from the furnace test

procedure to allow Dp to be determined

by tracer gas test measurements and to

use the calculations set forth in the test

procedures for power burners. Lennox

claims that this results in an AFUE for

its G20 furnace which averages at least

4.0 percent higher than when tested

under the current method of test for

atmospheric furnaces using the specified

value of 1.0 for D.

All of the comments in favor of this

portion of Lennox's petition essentially

state that allowing atmospheric furnaces

with burner box dampers to use a tracer

gas test to measure D. would result in

higher AFUE's and thereby meet the

1992 NAECA standard. If this occurs, it

would result in lower cost equipment

basically for reasons of simplicity, i.e.,

no power burner or spark ignition, and

therefore result in the elimination of the

power burner as the anticipated basic

model. Oklahoma and Lone Star both

stated that because of draft dilution

associated with atmospheric furnaces,

the units would also be more compatible

with existing vent systems than power

burners are, which also means lower

costs for many retrofit installations.

However, the draft dilution associated

with atmospheric furnaces was a major

issue raised by all of the comments

opposed to this portion of the Lennox

waiver.

Those comments essentially state that

most of these furnaces will be installed

indoors, as opposed to installed as

isolated combustion systems as they are

rated. The draft dilution becomes a large

infiltration loss when installed indoors

that is not recognized by the test

procedure and is not incurred by

similarly rated power burner units.

Thus, the Lennox unit would operate at

a lower efficiency than its rated

efficiency whereas a similarly rated

power burner unit would operate at a

higher efficiency when installed indoors.

These comments further claim that if the

waiver is granted, the majority of

consumers who install these

atmospheric furnaces indoors will be

misled by the labeled efficiency; that the

comparison of this furnace to a power

burner unit will be unfair; and that the

result will be an increase in energy

usage. There were also several

comments stating that this waiver is

contracy to their understanding of

NAECA in that the furnace standard

was set to a level so as to effectively

preclude atmospheric furnaces.

After review of the comments, DOE

agrees that some furnaces with low offperiod losses which utilize unrestricted

draft dilution will operate at lower

efficiencies when installed indoors as

compared to when installed as an

isolated combustion system. Lennox

points out in its rebuttal that there are

also some furnaces with power burners

that had indoor ratings higher, as

measured by the earlier 1988 test

procedure, than their current ICS

ratings. While this result, for the Lennox

furnace and others, may be contrary to

the intent of NAECA, DOE has

determined that such result is not

germane to the decision at hand.

NAECA clearly states that AFUE is to

be determined assuming an isolated

combustion system installation and this

Decision and Order is based on the

technical aspects of the test procedure

to produce accurate and comparable

results for the Lennox G20 series

furnace when tested as an isolated

combustion system. However, DOE is

concerned about the possible

degradation of performance of furnaces

with draft dilution when installed

indoors relative to their ICS rated

performance, especially in the absence

of stack dampers which no longer

receive performance credit, and, as a

result, DOE will explore the possibility

of having the legislated definition of

AFUE changed to an indoor rating.

AGA, Energen, SGA, and Entex all

commented that the tracer gas test to

50225

determine DI, is allowed for other types

of furnaces including power burners and

vented heaters, and supported its use in

this instance. However, Amana, HeilQuaker, Carrier, and CEC question the

accuracy of the tracer gas test for

Lennox's burner box damper design

with Heil-Quaker and Carrier

conducting tracer gas tests on some of

their atmospheric units to which they

had fitted burner box dampers. HeilQuaker and Carrier both claimed that

the tracer gas tests with the burner box

damper open yielded DF values of less

than 1.0 and that they could only

'duplicate Lennox's low Dp with the

burner box damper closed by sealing the

draft diverter. They maintain that

Lennox should not be allowed to test

with the draft diverter sealed because it

will always be open in the field. They

maintain that the open draft diverter

allows the possibility of draft relief air

from the draft diverter entering the heat

exchanger which would lower the effect

of the burner box damper.

Because of the questions raised by the

potential precedental effect on industry

product design and manufacturing in the

event the waiver should be granted,

DOE decided that more testing was

necessary. Accordingly, DOE contracted

with the National Institute for Standards

and Technology (NIST) to conduct

efficiency tests of q Lennox furnace

using tracer gas tests to determine DF.

As stated above, Lennox claimed in its

Petition for Waiver that its G20 Furnace,

when tested using tracer gas tests to

determine DF, would perform with an

AFUE improventent which would

average at least 4.0 percent.

Additionally, Lennox had rated the G20

furnace tested by NIST at an AFUE of

78.0 percent when tested using the test

procedure required by Lennox. The

result of the NIST test, using the Lennox

procedure, was a somewhat lower

AFUE of 77.3 percent. This result

showed that the Lennox furnace design

did increase ICS performance, which the

current test procedure did not measure,

although not by as much as Lennox

claimed. However, the NIST test also

showed that the tracer gas test did yield

a DF of less than 1.0 with the burner box

open as Heil-Quaker and Carrier

claimed. This would automatically result

in an increase in the AFUE, caused

solely by utilizing testing to obtain Di,

and not by the Lennox design feature.

Further, the test showed that the entry

and recirculation of draft diverter air

into the heat exchanger did occur as

Heil-Quaker and Carrier claimed. NIST

also found that with the draft diverter

open, the tracer gas test is difficult, if

not impossible, to perform when the

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tracer gas is injected into the burner

box.

Based on the above results, DOE has

determined that a waiver is warranted

but that the waiver should be a modified

version of the Interim Waiver previously

granted. The test procedure the today's

Decision and Order reflects these

findings.

DOE believes that the waiver should

account only for the effect of the burner

box damper and should not allow any

improvement of DF (and resulting AFUE)

due to the allowance of testing for DF.

Therefore, today's Decision and Order

requires that the tracer gas test for DF be

performed with the burner box damper

open and closed-thus only the relative

improvement in the DF value is allowed.

The NIST test also found that the

entry and recirculation of draft relief air

in the heat exchanger with the draft

diverter open did occur but that it made

little difference in the AFUE of the

Lennox furnace. However, because DOE

believes that other manufacturers may

introduce similar designs in which an

open draft diverter might make a greater

difference and because the draft

diverter is always open in the field,

today's Decision and Order requires the

tracer gas test be performed with the

draft diverter open.

During its testing, NIST found the

tracer gas test difficult to perform and,

therefore, today's Decision and Order

contains some other modifications from

the Interim Waiver to simplify the test.

Today's Decision and Order requires the

tracer gas to be injected and sampled in

the stack as opposed to in the heat

exchanger. Today's Decision and Order

also requires the ratio of Qs,oFF,

measured with the damper closed, to

QS.OFF' measured with the damper open,

(where Qs.orr is the integrated value of

the'off-cycle sensible heat loss over a

one minute period between the minutes

5 and 6 into the cool-down period), to be

used as the effective DF. The losses,

Qs.oFF with damper open and closed, are

measured over a one minute period

instead of using the off-cycle sensible

heat losses measured and integrated

over the whole off-cycle period of 13.3

minutes because the latter proved

difficult to measure using current tracer

gas techniques.

The net result of all these changes

from the Interim Waiver was an AFUE

of 76.8 percent which is 0.5 AFUE points

lower than NIST obtained using the,

Interim Waiver procedure and 1.2 AFUE

points lower than Lennox currently rates

the unit. Because of the complexities in

the flue gas measurements and to

validate the integrity of the test

procedure which is the subject to

today's Decision and Order, the Lennox

furnace tested by NIST was shipped to

an independent testing laboratory, ETL

Testing Laboratories, to test using

today's test procedure. The results of the

ETL conducted test was an AFUE of 76.6

which DOE considers to be in

reasonably good agreement with the -

NIST results.

Conclusion

It is therefore ordered that:

(1) The "Petition for Waiver" filed by

Lennox Industries (F-018) is hereby

granted as set forth in paragraph (2)

below, subject to the provisions of

paragraph (3), (4) and (5).

(2) Notwithstanding any contrary

provisions of appendix N of 10 CFR part

430, subpart B, Lennox Industries shall

be permitted to test its G20 and G20R

series gas furnaces on the basis of the

test procedure specified in 10 CFR part

430, with the modifications set forth

below:

(i)_Section 9.3.1 in ANSI/ASHRAE

Standard 103-1982 is deleted and

replaced with the following paragraph:

Gas- and oil fueled central furnaces. After

equilibrium conditions are achieved following

the cool-down test and the required

measurements performed, turn on the furnace

and measure the flue gas temperature, using

the thermocouple grid described above, at 0.5

(TF.ox(t,)) and 2.5 (TF.oN(ce)) minutes after the

main burner(s) come on. After the burner

start-up, delay the blower start-up by 1.5

minutes (t-), unless: (1) The furnace employs

a single motor to drive the power burner and

the indoor air circulating blower, in which

case the burner and blower shall be started

together; or (2) the furnace is designed to

operate using an unvarying delay titte that is

other than 1.5 minutes; or (3) the delay time

results in the activation of a temperature

safety device which shuts off the burner, in

which case the fan control shall be permitted

to start the blower. In the latter case, if the

fan control is adjustable, set it to start the

blower at the highest temperature. If the fan

control is permitted to start the blower,

measure time delay, (t-), using a stop watch.

Record the measured temperatures. During

the heat-up test for oil-fueled furnaces,

maintain the draft in the flue pipe within

#0.01 in. of water gauge of the manufacturer's

recommended on-period draft.

(ii)(1) The title of section 8.9 in ANSI/

ASHRAE Standard 103-1982 is deleted

and replaced with the following title:

8.9 Methods for Determining Draft

Factors OF, DF, and Ds and Off-Cycle

Loss Factor KL.

(2) Section 8.9.2 in ANSI/ASHRAE

Standard 103-1982 is deleted and

replaced with the following:

8.9.2 Optional Methods for

Determining Draft Factors Dp, DF, and Ds

for Systems Equipped with Power

Burners or Draft Inducers, and Method

for Determining Off-Cycle Loss Factor

K,, for Atmospheric Systems with an

Integral Draft Diverter and with an

Electra-mechanical Device at the burner

air inlet that Restricts the Flow Through

the Heat Exchanger in the. Off-Cycle.

Draft factors Or, DF, and Ds are to be

determined as described in 9.4 and loss

factor Kr, are to be determined as

described in 9.6. The tracer gas chosen

for task should have a density which is

less or approximately equal to the

density of air. Use a gas that is of a

different chemical species or different

concentration from the flue gas to be

measured and unreactive with the

environment to be encountered.

(3) Add the following section 8.9.2.3 in

ANSI/ASHRAE Standard 103-1982:

8.9.2.3 On atmospheric systems with

an integral draft diverter and an electromechanical device at the burner air inlet

that.restricts the flow through the heat

exchanger in the off-Cycle, determine KL

(the ratio of off-cycle sensible heat loss

tested with the electro-mechanical

device closed during the off cycle to the

off-cycle sensible heat loss tested with

the electro-mechanical device held open

during the off-cycle) during two

additional 10-minute duration cooldown tests. Conduct these two

additional cool-down tests after the

cool-down and heat-up tests described

in 9.2 and 9.3 are completed. During a

short burner off period, before the two

additional cool-down tests but after the

completion of the heat-up tests

described in 9.3, remove the blocking

over the draft relief opening and the

restriction over the test stack outlet but

keep the insulation over the rest of the

draft diverter surface on (see 9.1.1.6).

Conduct the first additional cool-down

test by first running the unit until

steady-state conditions are reached,

(see 9.1.) and then shutting the unit off

with the electro-mechanical device

adjusted or bypassed so that the device

is held open during the resulting cooldown period. After the cool-down

period, conduct the second additional

cool-down test by again running the unit

until steady-state conditions are

reached, and then shutting the unit off

but with the electro-mechanical device

operating as designed during the

resulting cool-down period. Measure the

stack gas mass flow rate (ms,opF) and the

stack gas temperature during the two

additional cool-down periods described

above starting at five minutes into the

cool-down period using the procedure

described in 9.6.5, and compute (as

described in 11.4.4) the off-cycle

sensible heat losses over the one minute

interval between five and six minutes

into the cool-down period using 9.6.

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(4) Section 9.2.1.1 in ANSI/ASHRAE

Standard 103-1982 is deleted and

replaced with the following:

9.2.1.1 Turn off the main burner after

steady-state testing is completed, and

measure the flue gas temperature by

means of the thermocouple grid

described in 7.5 at 1.5 (T,,. OFF (t3)) and

9.0 minutes (TF, OFF (t4)) after burner shut

off. Bypass the damper control in units

employing stack dampers and integral

draft diverter or draft hood so that the

damper remains open during the cooldown test. On atmospheric systems with

an integral draft diverter and equipped

with an electro-mechanical device at the

burner air inlet that restricts the now

through the heat exchanger in the offcycle, bypass or adjust the control for

the device electrically or mechanically

so that the device remains open during

the cool-down test.

(5) Add the following sections 9.6, and

9.6.1. to 9.6.8 ANSI/ASHRAE Standard

103-1982:

9.6 Tracer Gas Test Procedures for

Determining Off-Cycle Loss Factor KL

for Atmospheric Systems with Intergral

Draft Diverter and Equipped with an

Electro-Mechanical Device at the Burner

Air Inlet that Restricts the Flow Through

the Heat Exchanger in the Off-Cycle.

9.6.1 As described in 9.4.1.

9.6.2 After the completion of the heatup test in 9.3, turn the burner off and

remove the blocking over the draft

diverter and the restriction in the test

stack that are installed during the

steady-state test in 9.1.1.6. Do not

remove the insulation covering the draft

diverter surfaces (see 9.1.1.6). In the

meantime, sample and feed the ambient

air to the tracer gas analyzer and record

the background concentration CB of the

tracer gas to be used for the test (one

data point is generally enough).

9.6.3 Turn the burner on until steadystate conditions are again achieved as

specified in 9.1 .1.1. Turn the burner off

for a 10-minute cool-down period.

Adjust or bypass the electro-mechanical

device so that it remains open during the

cool-down period. Within one minute

after the unit is shut off to start the cooldown test, begin feeding a tracer gas

with a known and certified

concentraction CTm at a constant flow

rate VT into the lower part of the test

stack just above the test plane where

the stack thermocouple grid is located

(see 8.2,1.5.1). Periodically measure the

value of VT with an instantaneously

reading flow meter having an accuracy

of ± 3 percent of the quantity measured

and maintain that value of tracer gas

now rate at less than one percent of the

air flow rate through the test stack.

9.6.4 Within one minute after the

tracer gas flow is started, connect the

tracer gas sampling line to the sampling

probe located at a plane inside and near

the top exit of the test stack. Measure

the transport delay time which is equal

to the time between the connecting of

the sampling line and the initial

response of the tracer gas analyzer. Add

to this transport time the time required

for the analyser to reach 90% of its

steady-state value as specified in the

analyzer's operation manual. The sum of

these two values is the tracer gas delay

time tnSLAV, needed to match the

concentration measurement to the

temperature measurement in the offperiod loss calculation. Make sure that a

well mixed sample is collected by using

a multi-hole sampling probe as

recommended in appendix D, section B.

9.6.5 At five minutes after the unit is

shut off to start the cool-down test,

measure and record the percent

volumetric concentration of tracer gas

present in the stack gas sample, CT, at

the location specified in 9.6 .4. At the

same time, measure the stack gas

temperature , Ts, oFF, using the

thermocouple grid in the test plan (see

8.2.1.5.1). The data measurement and

recording should be done at a time

interval, At, of five second for the next

two to three minutes. The exact length

of time required for the data

measurement is equal to the tracer gas

sample delay time (see 9.6.4) plus one

minute. (Even though only one minute of

data is required for the computation of

the off-cycle loss, the longer time is

needed to take into account the time

delay between the concentration data

and the temperature data). Stop the

tracer gas injection and sampling after

the required data are measured and

recorded. Disconnect the tracer gas

sampling line from the sample probe and

sample the ambient air to clean the line.

9.6.7 At the end of the 10-minute cooldown period, turn on the burner until

steady-state conditions are again

achieve as specified in 9.1.1.1. Turn the

burner off for another 10-minute cooldown period. Let the electro-mechanical

device close the way it is designed to.

Repeat the test steps of 9.6 .3 through

9.6.6 except that the electro -mechanical

device is to remain closed. Note that the

tracer gas feeding rate , VT, may have to

be adjusted to a lower rate to keep the

sample concentration within the range

of the gas analyzer used.

9.6.8 The rate of the stack gas flow

through the stack, the off-cycle sensible

loss rate, and the loss factor KL are

calculated by the equations in 11.4.4.

(6) Add the following section 11.4.4 in

ANSI/ASHRAE Standard 103-1982:

11.4.4 Tracer gas procedure for

determining the off-cycle loss factor KL

for atmospheric furnaces with integral

5fl22.7

draft diverter and equipped with an

electro-mechanical device at the burner

air inlet that restricts the flow through

the heat exchanger during the off-cycle.

Calculate the off-cycle loss factor, KL,

defined as the ratio of the off-cycle

sensible heat loss with the electromechanical device closed during the offcycle to the off-cycle sensible heat loss

with the electro-mechanical device held

open during the off-cycle.

KL=(Q,,afr with device cloned)/(Q,,orr with

device open)

where

Q..on=1 (qe., ) • (At/60)

= One minute sum-total of the measured

ga.oa * At (At = timestep in seconds when

data are recorded) over a cre minute

interval starting at five minutes into the

cool-down period

At = time interval between measurements as

defined in 9.6.5, seconds

60 = unit conversion factor to convert time in

seconds to minutes

and where

gs.oFF = CF * Ms.0FF * (TS,oFF - Tp, )

gs.oFF = off-cycle sensible loss rate, Btu/min

C. = specific heat capacity of the stack gas.

. Btu/lb,, "°F

TS.OFF = measured stack temperature at time

t as defined in 9.6.5, T.

TaA = room ambient temperature as defined

in 11.2.4, °F

mS.oFF = ICTm - CT)/(CT -CB)l * PF a VT

Ms.orF = mass flow rate at time t of the stack

gas during the off-cycle, Ibm/min

CT, = concentration of measurable tracer

gas in a certified standard tracer gas

mixture, percent

CT = concentration by volume of tracer gas

present in the stack gas sample,

measured at time t + tosuY, in

accordance with 8.9, percent

tDELAY = tracer gas sample delay time as

defined in 9.6.4, seconds

CB = room background concentration by

volume of the tracer gas used as defined

in 9.6.2, percent

VT = flow rate of tracer gas through the stack

measured in accordance with 8.9, ft3/min

pF = density of the stack gas as defined in

11.4.1, lbm/ft3

(7) Add the following section in

ANSI/ASHRAE Standard 103-1982: 11.7

Additional Requirements for

Atmospheric Furnaces with Integral

Draft Diverter and Equipped with an

Electro-Mechanical Device at the Burner

Air Inlet that Restricts the Flow Through

the Heat Exchanger in the Off-Cycle.

For furnaces with an integral draft

diverter and equipped with an electromechanical device at the burner air inlet

and installed as an isolated combustion

system (ICS), the System Number and

the draft factor DF are defined as:

System Number=10

DF=KL

where

KL=off-cycle loss factor, as defined in 11.4.4

HeinOnline -- 55 Fed. Reg. 50227 1990

CAS-RM-79-104 COMMENT 42
50228 Federal Register / Vol. 55, No. 234 / Wednesday, December 5, 1990 / Notices

(iii)'With the exception of the

modification set forth in subparagraph

(i) and (ii) above, Lennox Industries

shall comply in all respects with the test

procedures specified in appendix N of 10

CFR part 430, subpart B. '

(3) The waiver shall remain in effect

until the Department of Energy

prescribes final test procedures

appropriate to the G20 and G20R series

furnace manufactured by Lennox -

Industries.

(4) This waiver is based upon the

presumed validity of statements,

allegations, and documentary materials

submitted by the petitioner. This waiver

may be revoked or modified at any time

upon a determination that the factual

,basis underlying the petition is

incorrect.

(5) This Waiver supersedes the

Interim Waiver granted to Lennox

Industries on November 30, 1989 (54 FR

50525, Dec. 7, 1989) and extended on July

12, 1990 (55 FR 30265, July 25, 1990).

Issued in Washington, DC., November 30,

l :ago.

J. Michael Davis,

/assistant Secretary, Conservation and

Renewable Energy.

IFR Doc. 90-28514 Filed 11-30-00; 2:25 panj

BILLING CODE 6450.01-M

Office of Energy Research

[Notice 91-3]

Special Research Grants; Computer

Hardware, Advanced Mathematics and

Model Physics (CHAMMP) Program

AGENCY: Office of Energy Research,

DOE.

ACTION: Notice inviting grant

applications.

SUMMARY: The Office of Health and

Environmental Research (OHER) of the

Department of Energy (DOE) hereby

announces its interest in receiving

applications for Special Research

Grants to support the development of

advanced climate models in conjunction

with the Atmospheric and Climate

Research Division's (ACRD). Computer

Hardware, Advanced Mathematics and

Model Physics (CHAMMP) Program.

This notice requests applications for

grants to support research in the

following areas:

(1) The theoretical limits to the

prediction of climate and climate change

on decade to century time scales and

regional (100-1000 km) spatial scales

using climate models, e.g. general

circulation models (GCMs) of the

atmosphere, ocean, and coupled

atmosphere-ocean system.

(2) The development of new

mathematical techniques, algorithms

and computer software to efficiently use

highly parallel computers, i.e. those that

typically have 50-1000 processors, for

climate models.

(3) The use of the current and next

generations of supercomputing systems

to dramatically increase the throughput

of climate simulations.

(4) The development of improved

representations of key climate processes

(surface processes, convective transport,

etc.) within climate models that properly

scale with model resolution.

Applicants may apply for any

combination or all of (1), (2), (3), and (4)

above. Collaborative proposals among

several investigators and/or

organizations that cover two or more of

the above areas are encouraged. It is

anticipated that up to 20 grants will be

awarded. Allocation among (1), (2), (3),

and (4) above will depend on the

number and quality of the proposals

received. Grant awards will generally be

for a 3 year period beginning in the

spring of 1991.

DATES: Applications should be sent to

the address below by 4.30 p.m.;

February 12, 1991. The project

description portion of the application

should not exceed 25 double spaced

pages. Lengthy appendices are

discouraged.

ADDRESSES: Completed applications

referencing 91-3, as well as requests for

the application and guide for the Special

Research Grant Program 10 CFR part

605, should be forwarded to: U.S.

Department of Energy, Division of

Acquisition and Assistance

Management, Office of Energy Research,

ER-64, Mail Stop G-236, Washington,

DC 20585. Telephone requests for

application kits may be made by calling

(302)353-3281.

FOR FURTHER INFORMATION CONTACT:

Dr. Ari Patrinos; Atmospheric and

Climate Research Division, Office of

Health and Environmental Research,.

ER-76, Washington, DC 20585, (301) 353-

4375.

SUPPLEMENTARY INFORMATION: One of

the major scientific objectives of the

Atmospheric and Climate Research

Division is to improve the performance

bf predictive models of the Earth's

climate and to thereby make predictions

of the response of the climate system to

increasing concentrations of greenhouse

gases. This directly supports the '

National Energy Strategy and the, U.S.

Global Change Research'Program.

The CHAMMP research program is a

multi-year program to accelerate and

improve climate prediction on global

and regional scales. Its emphasis is on

the integration of improved modeling

methods with state-of-the-science4and

next generation high performance

computing systems to increase both the

throughput and'accuracy of comnute^

climate model 'predictions.

Successful applicants for grants in

support of (1) above will conduct

research into the capability of climate

models for permforming decade to

century scale climate predictions for

regions encompassing 10°--109 kmz.

These applicants must demonstrate the

role of their research in defining the

limits of predictability for advanced

climate models, because these models

will be used to determine the role of

various factors, both natural and

anthropogenic, in climate change. These

studies may include, but are not limited

to, both theoretical and modeling

investigations of internal climate

variability:

Successful applicants for grants in

support of (2) above'will conduct

research for the development of new

mathematical techniques and numerical

algorithms that can be incorporated into

climate models running on highly

parallel computer systems of the type

envisioned to be the next generation of

supercomputers. These algorithms may.

deal with any or all of the climate

system process representations that will

comprise advanced climate models.

These processes include, but are not.

limited to, atmospheric and oceanic

dynamics and transport; surface energy

and mass exchange ; and atmospheric

radiative transfer.

Successful applicants for grants in

support of (3) above will conduct

research into integrating state-of-thescience climate models with the current

and next generations of state-of-thescience supercomputers to dramatically

improve the throughput of model

simulations on these systems.

Successful applicants for grants in

support of (4) above will conduct

research to improve the representations

of climate system processes for

inclusion into advanced climate models.

These studies will explore methods for

incorporating the results of the U.S.

Global Climate Change Research

Program's experimental and

observational programs into modules

that describe these processes correctly

through a range of scales within

advanced climate models.

To ensure that the program meets the

broadest needs of the research

community and the specific needs of-the

ACRD, the successful applicants will

participate as members of the CHAMMP

Science Team along with selected

scientists from other ACRD programs • •

HeinOnline -- 55 Fed. Reg. 50228 1990

CAS-RM-79-104 COMMENT 42