ASTM F2379-04(2016)

Standard Test Method for Energy Performance of Powered Open Warewashing Sinks

SIGNIFICANCE AND USE
5.1 The energy input rate test is used to confirm that the powered sink is operating properly prior to further testing.  
5.2 Preheat energy and time can be useful to food service operators to manage power demands and to know how quickly the powered sink can be ready for operation when filled with cold water.
Note 2: It is typically recommended that powered sinks be filled with hot water prior to use. This test is useful for operations that have a limited supply of domestic hot water and would need to use cold water to fill the sink to capacity.  
5.3 Idle energy rate and pilot energy rate can be used to estimate energy consumption during standby periods.  
5.4 Washing cycle energy consumption can be used by the food service operator to estimate energy consumption during operating periods.
SCOPE
1.1 This test method evaluates the energy consumption of powered open warewashing sinks. The food service operator can use these tests to evaluate and select a suitable washing device and understand its energy consumption.  
1.2 This test method applies to powered open warewashing sinks (powered sinks) with the following characteristics: a large main water sink with electrically powered water pump(s) and multiple high flow water nozzles. The unit may include gas or electric heaters to maintain water temperature. These powered sinks are designed to run for predetermined cycle duration and accommodate pots and pans of various shapes and sizes as well as cooking utensils. They are intended for stand alone use and require little supervision. The powered sink will be tested for the following (where applicable):  
1.2.1 Maximum energy input rate (10.2),  
1.2.2 Preheat energy consumption and duration (10.3),  
1.2.3 Idle energy rate (10.4),  
1.2.4 Pilot energy rate, if applicable (10.5), and  
1.2.5 Washing cycle energy consumption (10.6).
Note 1: This test method applies only to the powered portion of the unit. Other compartments (sanitizing, rinsing, and so forth) are not evaluated.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Sep-2016
• ICS: 97.060 - Laundry appliances
• Technical Committee: F26 - Food Service Equipment
• Drafting Committee: F26.06 - Productivity and Energy Protocol

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2379 − 04 (Reapproved 2016) An American National Standard
Standard Test Method for
Energy Performance of Powered Open Warewashing Sinks
This standard is issued under the fixed designation F2379; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This test method evaluates the energy consumption of 2.1 ASTM Standards:
powered open warewashing sinks. The food service operator D3588Practice for Calculating Heat Value, Compressibility
can use these tests to evaluate and select a suitable washing Factor, and Relative Density of Gaseous Fuels
device and understand its energy consumption. 2.2 ANSI Standard:
2000 International Fuel Gas Code
1.2 This test method applies to powered open warewashing
2.3 ASHRAE Documents:
sinks (powered sinks) with the following characteristics: a
ASHRAE Guideline 2 (RA90)Engineering Analysis of Ex-
large main water sink with electrically powered water pump(s)
perimental Data
andmultiplehighflowwaternozzles.Theunitmayincludegas
ASHRAE 1993Fundamentals Handbook
or electric heaters to maintain water temperature. These pow-
eredsinksaredesignedtorunforpredeterminedcycleduration
3. Terminology
and accommodate pots and pans of various shapes and sizes as
3.1 Definitions:
well as cooking utensils.They are intended for stand alone use
3.1.1 powered open warewashing sink, or powered sink,
and require little supervision. The powered sink will be tested
n—an all-purpose, stainless steel water sink with electrically
for the following (where applicable):
powered water pump(s) and multiple high flow water nozzles
1.2.1 Maximum energy input rate (10.2),
designed for cleaning pots, pans, and utensils. The main
1.2.2 Preheat energy consumption and duration (10.3),
washingsinkholds60to100galofheatedwater.Theunitmay
1.2.3 Idle energy rate (10.4),
or may not feature a scrapper sink, rinse tank, sanitizing tank,
1.2.4 Pilot energy rate, if applicable (10.5), and
scrap table, or a drain table, or both.
1.2.5 Washing cycle energy consumption (10.6).
3.1.2 test method, n—a definitive procedure for the
NOTE 1—This test method applies only to the powered portion of the
identification, measurement, and evaluation of one or more
unit. Other compartments (sanitizing, rinsing, and so forth) are not
qualities, characteristics, or properties of a material, product,
evaluated.
system, or service that produces test results.
1.3 The values stated in inch-pound units are to be regarded
3.1.3 uncertainty, n—measure of systematic and precision
as standard. The values given in parentheses are mathematical
errors in specified instrumentation or measure of repeatability
conversions to SI units that are provided for information only
of a reported test result.
and are not considered standard.
3.2 Definitions of Terms Specific to This Standard:
1.4 This standard does not purport to address all of the
3.2.1 energy input rate, n—peak rate at which a powered
safety concerns, if any, associated with its use. It is the
sink consumes energy (Btu/h or kW (kJ/h)).
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
This test method is under the jurisdiction of ASTM Committee F26 on Food the ASTM website.
Service Equipment and is the direct responsibility of Subcommittee F26.06 on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Productivity and Energy Protocol. 4th Floor, New York, NY 10036, http://www.ansi.org.
Current edition approved Oct. 1, 2016. Published November 2016. Originally Available from American Society of Heating, Refrigerating, and Air-
approved in 2004. Last previous edition approved in 2010 as F2379– 04 (2010). Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA
DOI: 10.1520/F2379-04R16. 30329, http://www.ashrae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2379 − 04 (2016)
3.2.2 idle energy rate, n—the rate of energy consumed 5.3 Idle energy rate and pilot energy rate can be used to
(Btu/h or kW (kJ/h)) by the powered sink while holding or estimate energy consumption during standby periods.
maintaining a water-filled wash sink at the 115°F (46°C)
5.4 Washing cycle energy consumption can be used by the
setpoint.
food service operator to estimate energy consumption during
3.2.3 pilot energy rate, n—average rate of energy consump-
operating periods.
tion (Btu/h) by a powered sink’s continuous pilot (if appli-
cable).
6. Apparatus
3.2.4 preheat energy, n—amountofenergyconsumedbythe
6.1 Barometer, for measuring absolute atmospheric
powered sink while preheating the wash sink water from 70 6
pressure, to be used for adjustment of measured natural gas
5°F (21 6 3°C) to 115°F (46°C), with the control(s) set to a
volume to standard conditions. Shall have a resolution of 0.2
calibrated 115°F (46°C).
in. Hg and an uncertainty of 0.2 in. Hg.
3.2.5 preheat rate, n—average rate (°F/min) at which the
6.2 Calibrated Exposed Junction Thermocouple Probes,
powered sink’s water is heated from 70 6 5°F (21 6 3°C) to
with a range from 50 to 200°F (10 to 93°C), with a resolution
115°F (46°C), with the control(s) set to a calibrated 115°F
of 0.2°F (0.1°C) and an uncertainty of 0.5°F (0.3°C), for
(46°C).
measuring the average temperature of the sink water, heating
3.2.6 preheat time, n—time required for the powered sink
element temperature, and ambient air temperature.
water to preheat from 70 6 5°F (21 6 3°C) to 115°F (46°C),
6.3 Gas Meter, for measuring the gas consumption of the
with the control(s) set to a calibrated 115°F (46°C).
powered sink (if applicable), shall have a resolution of at least
3 3
3.2.7 washing energy, n—amount of energy consumed (Btu
0.01 ft (0.0003 m ) and a maximum uncertainty no greater
or kWh (kJ)) during the powered sink’s washing cycle.
than 1% of the measured value for any demand greater than
3 3
3.2.8 washing energy rate, n—average rate of energy con- 2.2ft /h(0.06m /h).Ifthemeterisusedformeasuringthegas
sumption (Btu/h or kW (kJ/h)) during the powered sink’s consumed by pilot lights, it shall have a resolution of at least
3 3
washing cycle. 0.01 ft (0.0003 m ) and have a maximum uncertainty no
greater than 2% of the measured value.
4. Summary of Test Method
6.4 Pressure Gage, for monitoring natural gas pressure.
4.1 The powered sink under test is connected to the appro- Shallhavearangeofzeroto10in.H O,aresolutionof0.5in.
priate metered energy supply. The measured energy input rate
H O, and a maximum uncertainty of 1% of the measured
is determined and checked against the rated input before value.
continuing with testing.
6.5 Primary Supply, water heating system capable of sup-
4.2 The amount of cold (70 6 5°F (21 6 3°C)) water plying water at 115 6 5°F (46 6 3°C), as required by the
required to fill the main water sink to capacity is measured.
powered sink.
4.3 The amount of energy and time required to preheat the
6.6 Stop Watch, with a 1-s resolution.
powered sink’s wash sink from 70 6 5°F (21 6 3°C) to 115°F
6.7 Temperature Sensor, for measuring natural gas tempera-
(46°C) is determined.
ture in the range of 50 to 100°F (10 to 37.8°C), with a
4.4 The rate of idle energy consumption is determined with
resolution of 0.5°F (0.3°C) and an uncertainty of 61°F
the powered sink set to maintain 115°F (46°C) and the pump
(0.6°C).
motor(s) switched off.
6.8 ThermocoupleProbe,industrystandardtypeTortypeK
4.5 Pilotenergyrateisdetermined,whenapplicable,forgas
thermocouples capable of immersion with a range of 50 to
powered sinks.
200°F (10 to 93°C) and an uncertainty of 61°F.
4.6 Washing cycle energy consumption is characterized for
6.9 Watt-Hour Meter, for measuring the electrical energy
two different starting water temperatures: 70°F (21°C) and
consumption of a powered sink, shall have a resolution of at
115°F (46°C).
least 10Wh and a maximum uncertainty no greater than 1.5%
of the measured value for any demand greater than 100W. For
5. Significance and Use
any demand less than 100 W, the meter shall have a resolution
of at least 10 Wh and a maximum uncertainty no greater than
5.1 The energy input rate test is used to confirm that the
10%.
powered sink is operating properly prior to further testing.
5.2 Preheat energy and time can be useful to food service
7. Reagents and Materials
operators to manage power demands and to know how quickly
the powered sink can be ready for operation when filled with 7.1 Water, to fill the water sink shall meet the manufactur-
cold water. er’s specifications for quality and hardness.
NOTE 2—It is typically recommended that powered sinks be filled with
7.2 Powered Sink Detergent, to be added to the water shall
hotwaterpriortouse.Thistestisusefulforoperationsthathavealimited
meet power washer manufacturer’s specifications for type and
supply of domestic hot water and would need to use cold water to fill the
sink to capacity. amount. Otherwise, the detergent shall be a standard liquid
F2379 − 04 (2016)
NOTE 3—It is the intent of the test procedure herein to evaluate the
type with labeling specifying use in power washers and four
performanceofapoweredsinkatitsratedgaspressureorelectricvoltage.
ounces (4 oz) shall be added to the primary wash tank for all
If an electric powered sink is rated dual voltage (that is, designed to
tests.
operateateither208or240Vwithnochangeincomponents),thevoltage
selected by the manufacturer or tester, or both, shall be reported. If a
8. Sampling and Test Units
powered sink is designed to operate at two voltages without a change in
the resistance of the heating elements, the performance of the powered
8.1 Powered Sink—Arepresentative production model with
sink (for example, the preheat time) may differ at the two voltages.
heater shall be selected for performance testing.
9.4 Foragaspoweredsink,adjust(duringmaximumenergy
9. Preparation of Apparatus
input) the gas supply pressure downstream from the powered
sink’s pressure regulator to within 62.5% of the operating
9.1 Installtheapplianceinaccordancewiththemanufactur-
manifold pressure specified by the manufacturer. Make adjust-
er’s instructions and under a dedicated hood if necessary. Both
ments to the powered sink following the manufacturer’s
sides of the powered sink shall be a minimum of 6 in. (305
recommendations for optimizing combustion.
mm) from any wall, side partition, or other operating appli-
ance.Theassociatedheatingorcoolingsystemshallbecapable
9.5 Install a temperature sensor to record ambient tempera-
ofmaintaininganambienttemperatureof75 65°F(24 63°C)
tures of the test room. Measure the height of the powered sink.
within the testing environment when the exhaust ventilation
Thesensorshallbeplaced24in.(610mm)awayfromthefront
system or the powered sink, or both, are operating.
of the powered sink and at a height of half the powered sink’s
height.
9.2 Connect the powered sink to a calibrated energy test
meter. For gas installations, install a pressure regulator down-
9.6 Firmly attach eight thermocouple probes evenly along
stream from the meter to maintain a constant pressure of gas
the front and rear sides of the water sink only. For the front
for all tests. Install instrumentation to record both the pressure
wall, two thermocouple probes shall be located ( ⁄3 × height of
andtemperatureofthegassuppliedtothepoweredsinkandthe
the water fill line from the bottom), above the bottom of the
barometric pressure during each test so that the measured gas
sink ( ⁄3 × width of the sink), and one from the right and one
flow can be corrected to standard conditions. For electric
from the left wall. Two more thermocouples shall be located
installations, a voltage regulator may be required if the voltage
( ⁄3 × height of the water fill line from the bottom), above the
supply is not within 62.5% of the manufacturer’s nameplate
bottom of the sink ( ⁄3 × width of the sink), and one from the
voltage. For gas powered sinks, record gas temperature,
right and one from the left wall. These steps shall be repeated
pressure, and heating value. Record barometric pressure.
exactly for the rear wall. See Fig. 1. For example, for a water
9.3 For an electric powered sink, confirm (while the pow- sinkwithafrontwalldimensionof18in.tothefilllineand48
ered sink elements are energized) that the supply voltage is in.fromlefttorightshallhavetwothermocoupleslocated6in.
within 62.5% of the operating voltage specified by the from the bottom at 16 in. from either side and two thermo-
manufacturer (see Note 3). Record the voltage for each test. couples 12 in. from the bottom and 16 in. from either side.
Pump and heater energy consumption shall be separately Repeat for rear wall. (See Fig. 1 for thermocouple location
monitored and reported for all tests. illustration.)
FIG. 1 Diagram of Thermocouple Placement per 9.6
F2379 − 04 (2016)
10. Procedure be terminated and the manufacturer contacted if the difference
is greater than 5%. The manufacturer may make appropriate
10.1 General:
changes or adjustments to the unit or choose to supply an
10.1.1 For gas powered sinks, record the following for each
alternative unit for testing. It is the intent of the test procedure
test run:
herein to evaluate the performance of a powered sink at its
10.1.1.1 Higher heating value,
rated energy input rate.
10.1.1.2 Standard gas pressure and temperature used to
correct measured gas volume to standard conditions, 10.3 Preheat Energy Consumption and Duration:
10.1.1.3 Measured gas temperature,
NOTE 5—The preheat test should be conducted prior to powered sink
10.1.1.4 Measured gas pressure,
operation on the day of the test.
10.1.1.5 Barometric pressure, and
10.3.1 Starting with the unit at room temperature, fill the
10.1.1.6 Energy input rate during or immediately prior to
main water sink with 70 6 5°F (21 6 3°C) water. Monitor the
test.
average temperature of the water as washer is filled. If the
NOTE4—Foragasappliance,thequantityofheat(energy)generatedby
average temperature is not 70 6 5°F (21 6 3°C), then hot and
thecompletecombustionofthefuelisknownastheheatingvalue,he
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2379 − 04 (Reapproved 2010) F2379 − 04 (Reapproved 2016)An American National Standard
Standard Test Method for
Energy Performance of Powered Open Warewashing Sinks
This standard is issued under the fixed designation F2379; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method evaluates the energy consumption of powered open warewashing sinks. The food service operator can use
these tests to evaluate and select a suitable washing device and understand its energy consumption.
1.2 This test method applies to powered open warewashing sinks (powered sinks) with the following characteristics: a large
main water sink with electrically powered water pump(s) and multiple high flow water nozzles. The unit may include gas or electric
heaters to maintain water temperature. These powered sinks are designed to run for predetermined cycle duration and
accommodate pots and pans of various shapes and sizes as well as cooking utensils. They are intended for stand alone use and
require little supervision. The powered sink will be tested for the following (where applicable):
1.2.1 Maximum energy input rate (10.2),
1.2.2 Preheat energy consumption and duration (10.3),
1.2.3 Idle energy rate (10.4),
1.2.4 Pilot energy rate, if applicable (10.5), and
1.2.5 Washing cycle energy consumption (10.6).
NOTE 1—This test method applies only to the powered portion of the unit. Other compartments (sanitizing, rinsing, and so forth) are not evaluated.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D3588 Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
2.2 ANSI Standard:
2000 International Fuel Gas Code
2.3 ASHRAE Documents:
ASHRAE Guideline 2 (RA90) Engineering Analysis of Experimental Data
ASHRAE 1993 Fundamentals Handbook
3. Terminology
3.1 Definitions:
3.1.1 powered open warewashing sink, or powered sink, n—an all-purpose, stainless steel water sink with electrically powered
water pump(s) and multiple high flow water nozzles designed for cleaning pots, pans, and utensils. The main washing sink holds
60 to 100 gal of heated water. The unit may or may not feature a scrapper sink, rinse tank, sanitizing tank, scrap table, or a drain
table, or both.
This test method is under the jurisdiction of ASTM Committee F26 on Food Service Equipment and is the direct responsibility of Subcommittee F26.06 on Productivity
and Energy Protocol.
Current edition approved March 1, 2010Oct. 1, 2016. Published May 2010November 2016. Originally approved in 2004. Last previous edition approved in 20042010 as
F2379F2379 – 04. DOI: 10.1520/F2379-04R10. – 04 (2010). DOI: 10.1520/F2379-04R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA 30329,
http://www.ashrae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2379 − 04 (2016)
3.1.2 test method, n—a definitive procedure for the identification, measurement, and evaluation of one or more qualities,
characteristics, or properties of a material, product, system, or service that produces test results.
3.1.3 uncertainty, n—measure of systematic and precision errors in specified instrumentation or measure of repeatability of a
reported test result.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 energy input rate, n—peak rate at which a powered sink consumes energy (Btu/h or kW (kJ/h)).
3.2.2 idle energy rate, n—the rate of energy consumed (Btu/h or kW (kJ/h)) by the powered sink while holding or maintaining
a water-filled wash sink at the 115°F (46°C) setpoint.
3.2.3 pilot energy rate, n—average rate of energy consumption (Btu/h) by a powered sink’s continuous pilot (if applicable).
3.2.4 preheat energy, n—amount of energy consumed by the powered sink while preheating the wash sink water from 70 6 5°F
(21 6 3°C) to 115°F (46°C), with the control(s) set to a calibrated 115°F (46°C).
3.2.5 preheat rate, n—average rate (°F/min) at which the powered sink’s water is heated from 70 6 5°F (21 6 3°C) to 115°F
(46°C), with the control(s) set to a calibrated 115°F (46°C).
3.2.6 preheat time, n—time required for the powered sink water to preheat from 70 6 5°F (21 6 3°C) to 115°F (46°C), with
the control(s) set to a calibrated 115°F (46°C).
3.2.7 washing energy, n—amount of energy consumed (Btu or kWh (kJ)) during the powered sink’s washing cycle.
3.2.8 washing energy rate, n—average rate of energy consumption (Btu/h or kW (kJ/h)) during the powered sink’s washing
cycle.
4. Summary of Test Method
4.1 The powered sink under test is connected to the appropriate metered energy supply. The measured energy input rate is
determined and checked against the rated input before continuing with testing.
4.2 The amount of cold (70 6 5°F (21 6 3°C)) water required to fill the main water sink to capacity is measured.
4.3 The amount of energy and time required to preheat the powered sink’s wash sink from 70 6 5°F (21 6 3°C) to 115°F (46°C)
is determined.
4.4 The rate of idle energy consumption is determined with the powered sink set to maintain 115°F (46°C) and the pump
motor(s) switched off.
4.5 Pilot energy rate is determined, when applicable, for gas powered sinks.
4.6 Washing cycle energy consumption is characterized for two different starting water temperatures: 70°F (21°C) and 115°F
(46°C).
5. Significance and Use
5.1 The energy input rate test is used to confirm that the powered sink is operating properly prior to further testing.
5.2 Preheat energy and time can be useful to food service operators to manage power demands and to know how quickly the
powered sink can be ready for operation when filled with cold water.
NOTE 2—It is typically recommended that powered sinks be filled with hot water prior to use. This test is useful for operations that have a limited supply
of domestic hot water and would need to use cold water to fill the sink to capacity.
5.3 Idle energy rate and pilot energy rate can be used to estimate energy consumption during standby periods.
5.4 Washing cycle energy consumption can be used by the food service operator to estimate energy consumption during
operating periods.
6. Apparatus
6.1 Barometer, for measuring absolute atmospheric pressure, to be used for adjustment of measured natural gas volume to
standard conditions. Shall have a resolution of 0.2 in. Hg and an uncertainty of 0.2 in. Hg.
6.2 Calibrated Exposed Junction Thermocouple Probes, with a range from 50 to 200°F (10 to 93°C), with a resolution of 0.2°F
(0.1°C) and an uncertainty of 0.5°F (0.3°C), for measuring the average temperature of the sink water, heating element temperature,
and ambient air temperature.
6.3 Gas Meter, for measuring the gas consumption of the powered sink (if applicable), shall have a resolution of at least 0.01
3 3 3
ft (0.0003 m ) and a maximum uncertainty no greater than 1 % of the measured value for any demand greater than 2.2 ft /h (0.06
3 3
m /h). If the meter is used for measuring the gas consumed by pilot lights, it shall have a resolution of at least 0.01 ft (0.0003
m ) and have a maximum uncertainty no greater than 2 % of the measured value.
6.4 Pressure Gage, for monitoring natural gas pressure. Shall have a range of zero to 10 in. H O, a resolution of 0.5 in. H O,
2 2
and a maximum uncertainty of 1 % of the measured value.
F2379 − 04 (2016)
6.5 Primary Supply, water heating system capable of supplying water at 115 6 5°F (46 6 3°C), as required by the powered
sink.
6.6 Stop Watch, with a 1-s resolution.
6.7 Temperature Sensor, for measuring natural gas temperature in the range of 50 to 100°F (10 to 37.8°C), with a resolution of
0.5°F (0.3°C) and an uncertainty of 61°F (0.6°C).
6.8 Thermocouple Probe, industry standard type T or type K thermocouples capable of immersion with a range of 50 to 200°F
(10 to 93°C) and an uncertainty of 61°F.
6.9 Watt-Hour Meter, for measuring the electrical energy consumption of a powered sink, shall have a resolution of at least 10
Wh and a maximum uncertainty no greater than 1.5 % of the measured value for any demand greater than 100 W. For any demand
less than 100 W, the meter shall have a resolution of at least 10 Wh and a maximum uncertainty no greater than 10 %.
7. Reagents and Materials
7.1 Water, to fill the water sink shall meet the manufacturer’s specifications for quality and hardness.
7.2 Powered Sink Detergent, to be added to the water shall meet power washer manufacturer’s specifications for type and
amount. Otherwise, the detergent shall be a standard liquid type with labeling specifying use in power washers and four ounces
(4 oz) shall be added to the primary wash tank for all tests.
8. Sampling and Test Units
8.1 Powered Sink—A representative production model with heater shall be selected for performance testing.
9. Preparation of Apparatus
9.1 Install the appliance in accordance with the manufacturer’s instructions and under a dedicated hood if necessary. Both sides
of the powered sink shall be a minimum of 6 in. (305 mm) from any wall, side partition, or other operating appliance. The
associated heating or cooling system shall be capable of maintaining an ambient temperature of 75 6 5°F (24 6 3°C) within the
testing environment when the exhaust ventilation system or the powered sink, or both, are operating.
9.2 Connect the powered sink to a calibrated energy test meter. For gas installations, install a pressure regulator downstream
from the meter to maintain a constant pressure of gas for all tests. Install instrumentation to record both the pressure and
temperature of the gas supplied to the powered sink and the barometric pressure during each test so that the measured gas flow
can be corrected to standard conditions. For electric installations, a voltage regulator may be required if the voltage supply is not
within 62.5 % of the manufacturer’s nameplate voltage. For gas powered sinks, record gas temperature, pressure, and heating
value. Record barometric pressure.
9.3 For an electric powered sink, confirm (while the powered sink elements are energized) that the supply voltage is within
62.5 % of the operating voltage specified by the manufacturer (see Note 3). Record the voltage for each test. Pump and heater
energy consumption shall be separately monitored and reported for all tests.
NOTE 3—It is the intent of the test procedure herein to evaluate the performance of a powered sink at its rated gas pressure or electric voltage. If an
electric powered sink is rated dual voltage (that is, designed to operate at either 208 or 240 V with no change in components), the voltage selected by
the manufacturer or tester, or both, shall be reported. If a powered sink is designed to operate at two voltages without a change in the resistance of the
heating elements, the performance of the powered sink (for example, the preheat time) may differ at the two voltages.
9.4 For a gas powered sink, adjust (during maximum energy input) the gas supply pressure downstream from the powered sink’s
pressure regulator to within 62.5 % of the operating manifold pressure specified by the manufacturer. Make adjustments to the
powered sink following the manufacturer’s recommendations for optimizing combustion.
9.5 Install a temperature sensor to record ambient temperatures of the test room. Measure the height of the powered sink. The
sensor shall be placed 24 in. (610 mm) away from the front of the powered sink and at a height of half the powered sink’s height.
9.6 Firmly attach eight thermocouple probes evenly along the front and rear sides of the water sink only. For the front wall, two
1 1
thermocouple probes shall be located ( ⁄3 × height of the water fill line from the bottom), above the bottom of the sink ( ⁄3 × width
of the sink), and one from the right and one from the left wall. Two more thermocouples shall be located ( ⁄3 × height of the water
fill line from the bottom), above the bottom of the sink ( ⁄3 × width of the sink), and one from the right and one from the left wall.
These steps shall be repeated exactly for the rear wall. See Fig. 1. For example, for a water sink with a front wall dimension of
18 in. to the fill line and 48 in. from left to right shall have two thermocouples located 6 in. from the bottom at 16 in. from either
side and two thermocouples 12 in. from the bottom and 16 in. from either side. Repeat for rear wall. (See Fig. 1 for thermocouple
location illustration.)
10. Procedure
10.1 General:
10.1.1 For gas powered sinks, record the following for each test run:
F2379 − 04 (2016)
FIG. 1 Diagram of Thermocouple Placement per 9.6
10.1.1.1 Higher heating value,
10.1.1.2 Standard gas pressure and temperature used to correct measured gas volume to standard conditions,
10.1.1.3 Measured gas temperature,
10.1.1.4 Measured gas pressure,
10.1.1.5 Barometric pressure, and
10.1.1.6 Energy input rate during or immediately prior to test.
NOTE 4—For a gas appliance, the quantity of heat (energy) generated by the complete combustion of the fuel is known as the heating value, heat of
combustion, or calorific value of that fuel. For natural gas, this heating value varies according to the constituents of the gas. It is mea
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