Appendix T to Subpart B of Part 430 - Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals
10:3.0.1.4.18.3.13.6.30 : Appendix T
Appendix T to Subpart B of Part 430 - Uniform Test Method for
Measuring the Water Consumption of Water Closets and Urinals Note:
After April 21, 2014, any representations made with respect to
the water consumption of water closets or urinals must be made in
accordance with the results of testing pursuant to this
appendix.
Manufacturers conducting tests of water closets or urinals after
November 22, 2013 and prior to April 21, 2014, must conduct such
test in accordance with either this appendix or appendix T as it
appeared at 10 CFR part 430, subpart B, appendix S, in the 10 CFR
parts 200 to 499 edition revised as of January 1, 2013. Any
representations made with respect to the water consumption of such
water closets or urinals must be in accordance with whichever
version is selected. Given that after April 21, 2014
representations with respect to the water consumption of water
closets and urinals must be made in accordance with tests conducted
pursuant to this appendix, manufacturers may wish to begin using
this test procedure as soon as possible.
1. Scope: This appendix covers the test requirements used
to measure the hydraulic performances of water closets and
urinals.
2. Test Apparatus and General Instructions
a. The test apparatus and instructions for testing water closets
shall conform to the requirements specified in section 7.1,
General, subsections 7.1.1, 7.1.2, 7.1.3, 7.1.4, and 7.1.5 of ASME
A112.19.2-2008 (incorporated by reference, see § 430.3). The
flushometer valve used in the water consumption test shall
represent the maximum design flush volume of the water closet.
Measurements shall be recorded at the resolution of the test
instrumentation. Calculations of water consumption for each tested
unit shall be rounded off to the same number of significant digits
as the previous step.
b. The test apparatus and instructions for testing urinals shall
conform to the requirements specified in section 8.2, Test
Apparatus and General Instructions, subsections 8.2.1, 8.2.2, and
8.2.3 of ASME A112.19.2-2008 (incorporated by reference, see
§ 430.3). The flushometer valve used in the water consumption test
shall represent the maximum design flush volume of the urinal.
Measurements shall be recorded at the resolution of the test
instrumentation. Calculations of water consumption for each tested
unit shall be rounded off to the same number of significant digits
as the previous step.
3. Test Measurement
a. Water closets:
(i) The measurement of the water flush volume for water closets,
expressed in gallons per flush (gpf) and liters per flush (Lpf),
shall be conducted in accordance with the test requirements
specified in section 7.4, Water Consumption Test, of ASME
A112.19.2-2008 (incorporated by reference, see § 430.3). For
dual-flush water closets, the measurement of the water flush volume
shall be conducted separately for the full-flush and reduced-flush
modes and in accordance with the test requirements specified
section 7.4, Water Consumption Test, of ASME A112.19.2-2008.
(ii) Static pressure requirements: The water consumption tests
of siphonic and blowout water closets shall be conducted at two
static pressures. For flushometer valve water closets with a
siphonic bowl, the test pressures shall be 80 psi and 35 psi. For
flushometer valve water closets with a blowout bowl, the test
pressures shall be 80 psi and 45 psi. The test shall be run three
times at each pressure as specified in section 7.4.3 “Procedure,”
of ASME A112.19.2-2008 (incorporated by reference, see §
430.3). The final measured flush volume for each tested unit shall
be the average of the total flush volumes recorded at each test
pressure as specified in section 7.4.5 “Performance,” of ASME
A112.19.2-2008.
(iii) Flush volume and tank trim component adjustments: For
gravity flush tank water closets, trim components that can be
adjusted to cause an increase in flush volume, including (but not
limited to) the flapper valve, fill valve, and tank water level,
shall be set in accordance with the printed installation
instructions supplied by the manufacturer. If the installation
instructions for the model to be tested do not specify trim setting
adjustments, these trim components shall be adjusted to the maximum
water use setting so that the maximum flush volume is produced
without causing the water closet to malfunction or leak. The water
level in the tank shall be set to the maximum water line designated
in the printed installation instructions supplied by the
manufacturer or the designated water line on the tank itself,
whichever is higher. If the printed installation instructions or
the water closet tank do not indicate a water level, the water
level shall be adjusted to 1±0.1 inches below the top of the
overflow tube or 1±0.1 inches below the top rim of the
water-containing vessel (for gravity flush tank water closets that
do not contain an overflow tube) for each designated pressure
specified in Table 5 of ASME A112.19.2-2008 (incorporated by
reference, see § 430.3).
b. Urinals - The measurement of water flush volume for urinals,
expressed in gallons per flush (gpf) and liters per flush (Lpf),
shall be conducted in accordance with the test requirements
specified in section 8.6, Water Consumption Test, of ASME
A112.19.2-2008 (incorporated by reference, see § 430.3). The
final measured flush volume for each tested unit shall be the
average of the total flush volumes recorded at each test pressure
as specified in section 8.6.4 “Performance,” of ASME
A112.19.2-2008.
[63 FR 13317, Mar. 18, 1998, as amended at 78 FR 62987, Oct. 23,
2013]