ANNEX VII Measurements and calculations

1. For the purposes of compliance and verification of compliance with the requirements of this Regulation, measurements and calculations shall be made using harmonised standards the reference numbers of which have been published in the Official Journal of European Union, or other reliable, accurate and reproducible method, which takes into account the generally recognised state of the art methods, and whose results are deemed to be of low uncertainty.

2. The determination of the seasonal energy consumption and seasonal energy efficiency ratio (SEER) and seasonal coefficient of performance (SCOP) shall take into account:

(a)

European seasonal conditions, as defined in Table 1 of this Annex;

(b)

Reference design conditions, as defined in Table 3 of this Annex;

(c)

Electric energy consumption for all relevant modes of operation, using time periods as defined in Table 4 of this Annex;

(d)

Effects of the degradation of the energy efficiency caused by on/off cycling (if applicable) depending on the type of control of the cooling and/or heating capacity;

(e)

Corrections on the seasonal coefficients of performance in conditions where the heating load can not be met by the heating capacity;

(f)

The contribution of a back-up heater (if applicable) in the calculation of the seasonal efficiency of a unit in heating mode.

3. Where the information relating to a specific model, being a combination of indoor and outdoor unit(s), has been obtained by calculation on the basis of design, and/or extrapolation from other combinations, the documentation should include details of such calculations and/or extrapolations, and of tests undertaken to verify the accuracy of the calculations undertaken (including details of the mathematical model for calculating performance of such combinations, and of measurements taken to verify this model).

4. The energy efficiency ratio (EER_rated) and, when applicable, coefficient of performance (COP_rated) for double ducts and single ducts shall be established at the standard rating conditions as defined in Table 2 of this Annex.

5. The calculation of electricity consumption for cooling and/or heating shall take into account electric energy consumption of all relevant modes of operation, when appropriate, using time periods as defined in Table 4 of this Annex.

Table 1

Bin number (j), outdoor temperature (Tj) in °C and number of hours per bin (hj) for the cooling season and for heating seasons ‘average’, ‘warmer’ and ‘colder’. ‘db’ = dry bulb temperature

COOLING SEASON				HEATING SEASON
						Average	Warmer	Colder
j#	Tj°C	hjh		j#	Tj°C	hjAh	hj Wh	hjCh
	db				db
1	17	205		1 to 8	– 30 to – 23	0	0	0
2	18	227		9	-22	0	0	1
3	19	225		10	-21	0	0	6
4	20	225		11	-20	0	0	13
5	21	216		12	-19	0	0	17
6	22	215		13	-18	0	0	19
7	23	218		14	-17	0	0	26
8	24	197		15	-16	0	0	39
9	25	178		16	-15	0	0	41
10	26	158		17	-14	0	0	35
11	27	137		18	-13	0	0	52
12	28	109		19	-12	0	0	37
13	29	88		20	-11	0	0	41
14	30	63		21	-10	1	0	43
15	31	39		22	-9	25	0	54
16	32	31		23	-8	23	0	90
17	33	24		24	-7	24	0	125
18	34	17		25	-6	27	0	169
19	35	13		26	-5	68	0	195
20	36	9		27	-4	91	0	278
21	37	4		28	-3	89	0	306
22	38	3		29	-2	165	0	454
23	39	1		30	-1	173	0	385
24	40	0		31	0	240	0	490
				32	1	280	0	533
				33	2	320	3	380
				34	3	357	22	228
				35	4	356	63	261
				36	5	303	63	279
				37	6	330	175	229
				38	7	326	162	269
				39	8	348	259	233
				40	9	335	360	230
				41	10	315	428	243
				42	11	215	430	191
				43	12	169	503	146
				44	13	151	444	150
				45	14	105	384	97
				46	15	74	294	61
Total		2 602				4 910	3 590	6 446

Table 2

Standard rating conditions, temperatures in ‘dry bulb’ air temperature (‘wet bulb’ indicated in brackets)

a In case of single ducts, the condensor (evaporator) when cooling (heating), is not supplied with outdoor air, but indoor air.
Appliance	Function	Indoor air temperature(°C)	Outdoor air temperature(°C)
air conditioners, excluding single duct	cooling	27 (19)	35 (24)
	heating	20 (max. 15)	7(6)
single duct	cooling	35 (24)	35 (24)a
	heating	20 (12)	20 (12)a

Table 3

Reference design conditions, temperatures in ‘dry bulb’ air temperature (‘wet bulb’ indicated in brackets)

Function / season	Indoor air temperature(°C)	Outdoor air temperature(°C)	Bivalent temperature(°C)	Operating limit temperature(°C)
	Tin	Tdesignc/Tdesignh	Tbiv	Tol
cooling	27 (19)	Tdesignc = 35 (24)	n.a.	n.a.
heating / Average	20 (15)	Tdesignh = – 10 (– 11)	max. 2	max. – 7
heating / Warmer		Tdesignh = 2 (1)	max. 7	max. 2
heating / Colder		Tdesignh = – 22 (– 23)	max. – 7	max. – 15

Table 4

Operational hours per type of appliance per functional mode to be used for calculation of electricity consumption

Type of appliance / functionality (if applicable)		Unit	Heating season	On mode	Thermostat-off mode	Standby mode	Off mode	Crankcase heater mode
				cooling: HCEheating: HHE	HTO	HSB	HOFF	HCK
Air conditioners, except double ducts and single duct
Cooling mode, if appliance offers cooling only		h/annum		350	221	2 142	5 088	7 760
Cooling and heating modes, if appliance offers both modes	Cooling mode	h/annum		350	221	2 142	0	2 672
	Heating mode	h/annum	Average	1 400	179	0	0	179
			Warmer	1 400	755	0	0	755
			Colder	2 100	131	0	0	131
Heating mode, if appliance offers heating only		h/annum	Average	1 400	179	0	3 672	3 851
			Warmer	1 400	755	0	4 345	4 476
			Colder	2 100	131	0	2 189	2 944
Double duct air conditioner				cooling: HCEheating: HHE	HTO	HSB	HOFF	HCK
Cooling mode, if appliance offers cooling only		h/60 min		1	n/a	n/a	n/a	n/a
Cooling and heating modes, if appliance offers both modes	Cooling mode	h/60 min		1	n/a	n/a	n/a	n/a
	Heating mode	h/60 min		1	n/a	n/a	n/a	n/a
Heating mode, if appliance offers heating only		h/60 min		1	n/a	n/a	n/a	n/a
Single duct air conditioner				cooling: HCEheating: HHE
Cooling mode		h/60 min		1	n/a	n/a	n/a	n/a
Heating mode		h/60 min		1	n/a	n/a	n/a	n/a