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The Ecodesign for Energy-Related Products and Energy Information Regulations 2021

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Regulation 17

SCHEDULE 7Measurement methods and calculations for household dishwashers

This Atodlen has no associated Memorandwm Esboniadol

General conditions

1.—(1) Sub-paragraphs (2) to (4) apply for the purposes of the measurements and calculations referred to in paragraphs 2 to 5.

(2) The eco programme at rated capacity must be used for the measurement and calculation of the Energy Efficiency Index (EEI), water consumption, programme duration, cleaning and drying performance of a household dishwasher model.

(3) The energy consumption, water consumption, programme duration, cleaning and drying performance must be measured concurrently.

(4) In this Schedule—

(a)the EPWC is expressed in litres per cycle and rounded to one decimal place;

(b)the duration of the eco programme (Tt) is expressed in hours and minutes and rounded to the nearest minute.

Energy efficiency index

2.—(1) The EEI is determined as follows.

(2) For all household dishwasher models, the EEI is calculated by comparing the eco programme energy consumption at rated capacity (“EPEC”) of the dishwasher to its standard programme energy consumption (“SPEC”).

(3) The EEI must be rounded to one decimal place and is calculated as follows—

  • EEI = (EPEC/SPEC) × 100.

(4) For the purposes of sub-paragraph (3)—

(a)EPEC and SPEC are measured in kWh/cycle and rounded to three decimal places;

(b)SPEC is calculated as follows—

(i)for household dishwashers with rated capacity ps ≥ 10 and width > 50 cm—

SPEC = 0.025 × ps + 1.350;

(ii)for household dishwashers with rated capacity ps ≤ 9 or width ≤ 50 cm—

SPEC = 0.090 × ps + 0.450;

where ps is the number of place settings.

Cleaning performance index

3.—(1) The cleaning performance index (“IC”) is determined as follows.

(2) For all household dishwasher models, the IC is calculated by comparing the cleaning performance of the eco programme to the cleaning performance of a reference dishwasher.

(3) The IC must be rounded to three decimal places and is calculated as follows—

IC = exp (ln IC) and

n IC = (1/n) × Σn i=1 ln(CT,i/CR,i).

(4) For the purposes of sub-paragraph (3)—

(a)CT,I is the cleaning performance of the eco programme of the household dishwasher under test for one test run (i) , rounded to three decimal places;

(b)CR,i is the cleaning performance of the reference dishwasher for one test run (i), rounded to three decimal places;

(c)n is the number of test runs.

Drying performance index

4.—(1) The drying performance index (“ID”) is determined as follows.

(2) For all household dishwasher models, the ID is calculated by comparing the drying performance of the eco programme to the drying performance of a reference dishwasher.

(3) The ID must be rounded to three decimal places and is calculated as follows—

ID = exp (ln ID) and

ln ID = (1/n) × Σn i=1 ln(ID,i).

(4) For the purposes of sub-paragraph (3)—

(a)ID,i is the drying performance index of the eco programme of the household dishwasher under test for one test run (i);

(b)n is the number of combined cleaning and drying test runs;

(c)the ID,i is rounded to three decimal places and calculated as follows—

ln ID,i = ln (DT,i/DR,t), where—

(i)DT,i is the average drying performance score of the eco programme of the household dishwasher under test for one test run (i), rounded to three decimal places;

(ii)DR,t is the target drying score of the reference dishwasher, rounded to three decimal places.

Low power modes

5.—(1) Where applicable the power consumption of the off mode (Po), standby mode (Psm) and delay start (Pds) must be measured.

(2) The measured values must be expressed in W and rounded to two decimal places.

(3) During measurements of the power consumption in low power modes, the following must be checked and recorded—

(a)the display (or not) of information; and

(b)the activation (or not) of a network connection.

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