i? 

### ~ Department of Energy Washington, DC 20585 December 26, 1996


### WATER HEATER TEST PROCEDURE NOTICE OF PUBLIC WORKSHOP
On March 23, 1995, the Department ofEnergy (the Department) published a notice ofProposed Rule and Public Hearing on proposed amendments to clarify the water heater, kitchen range, oven, and microwave; and clothes washer testprocedures. (60 FR 15330, March 23, 1995) The notice requested data and comments until the close ofcomment period onAugust 31, 1995 (Docket No: EE-RM-94-230). A public hearing was held on July 12, 1995. The Department is convening a public workshop for water heaters to discuss the large number of comments received on the notice and from the public hearing. The Department seeks to gather additional information and/or data on certain unresolved issues being considered by the Department in its development ofthe Final Rule for Water Heater Test Procedure. The workshop will be held on February 12, 1997, at the U.S. Department ofEnergy, 1000 Independence Avenue, SW., Washington, DC20585 in Room 1E-245 from 9:00 a.m. to 4:00 p.m. Comments under Docket No. EE-RM-94-230 may be read at the Department ofEnergy Freedom ofInformation Reading Room, U.S. Department ofEnergy, Forrestal Building, Room IE-190, 1000 Independence Avenue, SW, Washington, DC 20585, (202) 586-6020, between the hours of 9:00 a.m. and4:00 p.m., Monday through Friday, except Federal holidays. The tentative topics and issues to be discussed atthe February 12, 1997, public workshop are attached. If there are additional topics and issues you would like to discuss at the workshop orif you have additional data and information, please send them to Ms. Sandy Beall, U.S. Department ofEnergy, Office ofEnergy Efficiency and Renewable Energy, EE-43, Room 1J-018, Docket No. EE-RM-94-230, 1000 Independence Avenue, SW., Washington, DC. 20585-0121 byJanuary 30, 1997. Telephone: (202) 586-7574; FAX: (202) 586-4617. Ifyou have any questions or plan to attend the workshop, please contact Mr. Bryan Berringer ofmy staff at (202) 586-0371. Sincerely,

Director Office of Codes and Standards Building Technology, State and

Community Programs Energy Efficiency and Renewable Energy Attachment

Printed with soy ink on recycled paper 

### .....

, I 

### Department of Energy Washington, DC 20585 

### December 26, 1996
WATER HEATER TESTPROCEDURE NOTICE OFPUBLIC WORKSHOP
On March 23, 1995, the DepartmentofEnergy (the Department) published a notice ofProposed Rule and Public He¥ing on'proposed amendments to clarify the water heater. kitchen range, oven, andmicrowave; and clothes washertestprocedures. (60 FR 15330, March 23, 1995) The notice requested data and comments until the close ofcommentperiod on August 31, 1995 (Docket No: EE-RM-94-230). Apublic hearing was held on July 12, 1995. The Departmentis convening apublic workshop for water heaters to discuss the large number of comments received on the notice and from the public hearing. The Department seeks to gather additional information and/ordata on certain unresolved issues being considered by the Departmentin its development ofthe Final Rule for Water HeaterTest Procedure. The workshop will be held on February 12, 1997, at the U.S. Department ofEnergy, 1000 Independence Avenue, SW., Washington, DC 20585 in Room lE-245 from 9:00 a.m. to 4:00 p.m. Comments under DocketNo. EE-RM-94-230 may be read at**t~e** Department ofEnergy Freedom ofInformation Reading Room, U.S. DepartmentofEnergy', ForrestalBuilding, Room 1 E-I90. 1000 Independence Avenue, SW, Washington, DC 20585, (202) 586-6020, between the hours of 9:00 a.m. and 4:00 p.m., Monday through Friday, exceptFederal holidays. The tentative topics and issues to be discussed at the February 12, 1997, public workshop are 'attached. Ifthere are additional topics and issues you would like to discuss atthe workshop orif you have additional data and information, please send them to Ms. Sandy Beall, U.S. Department**of~nergy,** Office of Energy Efficiency and Renewable Energy, EE-43, Room lJ-018, DocketNo. EE-RM-94-230, 1000 Independence Avenue, SW., Washington, DC. 20585-0121 by January 30, 1997. Telephone: (202) 586-7574; FAX: (202) 586-4617. Ifyou have any questions orplan to attend the workshop, please contact Mr. Bryan Berringer ofmy staff at (202) 586-0371.

Attachment Sincerely, 

# {i:1J.**....c.LCa~be,·**Director Office ofCodes and Standards Building Technology, State and

Community Programs Energy Efficiency and Renewable Energy 

# ® Printed with soy ink on recycled paper 

# GTentativeTopics and Issuses to be discussed at the February 12. 1997 Public Workshop


### 1. Firsthour rating for storage-type water heaters * Should DOE consider the 1978 test method for measuring first hour rating ? * Should DOEretain the current test method (codified in the 1991 Final Rule) for measuring first hour rating ? * Should DOE adopt the 1995 proposed test method for measuring first hour rating (with revision to include a temperature correction factor of 120°F for each draw ifan internal mixing device isused) ? * Should DOE adopt the alternate testmethQd proposed by Dr. Carl Hiller ofEPRI ? 2. Instantaneous water heaters * Should coverage be extended to oil-fired instantaneous water heaters since such products do not yet exist in the marketplace ?
. * Should coverage be extended to single point-of-use type electric instantaneous water heaters ? * Should DOE adopt an alternate first-hour rating method for instantaneous water heaters using amaximum draw rate at a temperature rise of77°F as proposed by GAMA, or a temperature rise of50°F as proposed by EEI and EPRI ? 3. Storage-type water heaters with rated storage capacities ofless than 20 gallons * Should the existing minimum efficiency standards for storage-type water heaters be applied to storage-type water heaters with rated storage capacities ofless than 20 gallons? * Should the draw rate and daily draw volume in ASHRAE Standard 118.2

- 1993, as referenced inthe 1995 DOE proposed rule, be used in the 24-hour simulated use test for storage-type water heaters with rated storage capacities ofless than 20 gallons ?If not,what draw rate and total daily drawn volume should be used ? * Should coverage be extended to storage-type water heaters with rated storage capacities ofless than 10 gallons (single point-of-use type heaters) ? 

# ·, TentativeTopics and Issuses tobe discussed at the February ]2. 1997 Public Workshop
1. First houtrating for storage-type water heaters

• Should DOE considerthe 1978 test method for measuring ftrst hourrating?
• Should DOE retain the current test method (codified inthe 1991 FinalRule) for measuring first hourrating ?
• Should DOE adopt the 1995 proposed test method for measuring first hourrating (with revision to include a temperature correction factor of 120 0 p for each draw ifan internal mixing device is used) ?
• .Should DOE adoptthe alternate testmethQd proposed by Dr. Carl Hiller ofEPRI ? 2. Instantaneous water·heaters

• Should coverage be extendedto oil-fired instantaneous water heaters since such products do not yet exist in the marketplace?
.. • .Should coverage be extended to single point-of-use type electric instantaneous water heaters?

• Should DOE adopt an alternate ftrst-hour rating method for instantaneous water heaters using a maximum draw rate at a temperature rise of77°P as proposed by GAMA, or a temperature rise of50°Fas proposed by EEland EPRI ? 3. Storage-type water heaters with rated storage capacities ofless than 20 gallons

•**Sho~ld** the existing minimum efficiency standards for storage-type waterheaters be applied to storage-type water heaters with rated storage capacities ofless than 20 gallons?
• Should the draw rate and daily draw volume in ASHRAE Standard 118.2

- 1993, as referenced in the 1995 DOE proposed rule, be used in the 24-hour simulated use test for storage-type water heaters with rated storage capacities ofless than 20 gallons? If not, whatdraw rate and total daily drawn volume should beused ?
.
• Should coverage be extended to storage-type water heaters with rated storage capacities ofless**th~n** 10 gallons (single point-of-use**typ~** heaters) ?

### 4. Daily hot water usage of64.3 gallons * Does 64.3 gallons reflects realistic daily hot water usage, and ifnot, what volume should it be?

- How will the Energy Factor be effected iftesting were conducted at a daily hot water usage volume other than 64.3 gallons ? 5. Thermostat settings * Should the current setting of 135°F be lowered to 120°F to reflect manufacturers' recommendation that thermostat setting be set at a lower setting to avoid potential scalding ?. 

### * How will the Energy Factor be affected iftesting were conducted at a thermostat setting of 120°F ? 6. Testprocedures for heat pump water heaters Does the current testprocedure (draw schedule of six hourly draws of 10.7 gallons per draw) provide operating conditions which would allow theresistance element(s) to be activated ?

*Should DOE consider an alternate draw schedule to be used in the 24-hr simulated use testfor heatpump water heaters and if so, what should this draw schedule be ? * How will the Energy Factor be effected iftesting were conducted using different alternate draw schedules ? 7. Definitions forheat pump water heaters, add-on heat pump water heaters, integral heat pump water heaters, solar water heaters, and heat pump water heater storage tanks * Are the proposed definitions adequate and necessary and should DOE adopt them ? * Should any definition be deleted and if so, which one ? * Should any definition be revised and if so, which one and how should itbe revised ? 4. Daily**~Dt** water usage Df64.3 gallDns

" . . • ODes 6..\..3 gallons reflects realistic daily hDt water usage, andifnDt, what vDlume ShDUldit be 1 -
• HDW will the Energy FactDr be effected iftesting were .cDnducted at adaily hDtwater usage vDlumeotherthan 64.3 gallDns 1 5. ThermDstat setting's
• ShDUld the current setting Df 135°Fbe IDwered to' 120°F to'reflectmanufacturers' recDmmendatiDn that thermDstat'**sett~ng** be set at a IDwer setting to' aVDid pDtential" scalding '?

. • How will the Energy Factor be affected iftesting were conducted ata thermostat settfng of 120°F 1 6. Testprocedures for heat pump water heaters
• Does the current testprocedure**(dr~wsched1Jle** ofsix h()urly draws of10.7 gallons perdraw) provide Dperating cDnditiDns which would allDw theresi$tance element(s) to

.be activated ?
.

• ShDUld DOE cDnsider an alternate draw schedule to be used in the 24-hr·simulated use testfDr heatpump water heaters andif

### so., what ShDUld this drawschedule be 1 , • How will the Energy FactDr be effected iftestingwere cDnducted,using different

alternate draw schedules 1
. 7. Definitions fDr heatpump water heaters, add-on heatpump waterheaters, Integral heat pump waterheaters, sDlar water heaters, and heatpump water heater stDrage tanks
• ,Are the prDpDsed definitiDns adequate and ne,cessaryand should DOE adDptthem 1 .
• Should any definition be deleted and if

### so., which Dne? '
• ShDUld any definition berevised and ifso, which Dne and how ShDUld it

### be revised 1
.. ,**~.** 

# .