1 Subject : Announcement for  the Requirements on Labeling and Inspection of Energy 
Consumption and Energy Efficiency Rating and Minimum Energy 
Performance Standards for Drinking Water Dispenser  (Draft)  
Basis : Paragraph 4, Article 14 of the Energy Management Act  
Announcement ： 
I. Scope of applicability ：The Drinking Water Dispenser  is compl ied with CNS 3910 , and 
promulgated by the Bureau of Standards, Metrology and Inspection (BSMI) of the 
Ministry of Economic Affairs (MOEA) as products requiring inspection before 
marketing.  
II. Method of test ：The 24h energy consumption  (E24), hot w ater average temperature  (Th), 
and iced w ater average temperature  (Tc) of the Drinking Water Dispenser  shall be 
tested under the CNS  3910 . 
III. Minimum Energy Performance Standard  (MEPS):  
(i) The measured Est,24 shall not be greater  than the nameplate values on products  and 
the MEPS  in the Table 1.  Est,24 shall  be calculated , as follows： 
Est,24=E24/K；K=(Th- ambient temperature (℃))/(100- ambient temperature (℃)). 
(ii) The measured E24 shall  not be greater  than the nameplate values on products  and 
the MEPS  in the Table 2. 
IV . D imension  of label dimension is 150mm long, 100mm width . As follows ： 
 
 
 
 
 
 
 
   
   
 
V . Labeling posting ： 
 2 While displaying or marketing the products, the dealer shall display or post the 
labeling on the front of the products, and shall not hide, destroy or adopt other means to 
render the labeling not recognizable by the consumers. While manufacturing or 
importing the products, the product manufacturer or importer shall display the labeling 
in the product instruction/manual, or place the labeling in a prominent area on the front 
of the prod ucts. 
VI. Energy efficiency rating ： 
The products shall be classified using the nameplate values  of E st,24(Warm -Hot Type) 
or E 24(Iced -Warm -Hot Type) to match the Table 3 or Table 4.  
VII. Post-market surveillance  actions:  
While monitoring the implementation of the energy efficiency rating scheme, the 
Central Competent Authority may conduct annual product sampling and testing; the 
Central Competent Authority may designate the sampled products and the dealer shall 
send the product samples to designated testing lab oratory within the allowed time. In 
principle, the number of products first sampled and tested shall be decided based on the 
sales number of the designated products of the previous year. Nonetheless, the Central 
Competent Authority may change the sampling ratio based on actual needs.  
 
   3 Table 1 MEPS  for Warm -Hot Type  
 
Normalized Standing Loss per 24h  Est,24 (kWh)  
0.053×V+0.750  
Note:  
1、V is the nameplate values  of hot-water  tank.  V shall be calculated to the first 
decimal place, second place rounding.  
2、The measured  Est,24 shall be  calculated to the 3rd decimal place, 4th place 
rounding.  
   4 Table 2 MEPS  for Iced-Warm -Hot Type  
 
Minimum Energy Performance Standard  (kWh)  
0.09×Veq +0.45  
Note:  
1、The measured  E24 shall be  calculated to the 3rd decimal place, 4th place 
rounding.  
2、Veq=V1×K1+(V2×K2)/3 
3、V1 is the nameplate values  of hot-water  tank(unit：liter) . 
4、V2 is the nameplate values  of iced-water  tank(unit：liter) . 
5、V1 and V 2 shall be calculated to the 1st decimal place, second place rounding.  
6、According to CNS  3910  Section 12.12 , the ambient temperature , hot w ater average 
temperature  (Th), and iced w ater average temperature  (Tc) are measured. To  calculate  K1 
and K 2, as follows： 
(1)K1 = (Th – ambient temperature) / (100 – ambient temperature)  
(2)K2 = (Ambient temperature – Tc ) / (ambient temperature)  
(3)K1 and K2 shall be  calculated to the 3rd decimal place, 4th place rounding.  
 
   5 Table 3 Energy efficiency rating  standard  requirements  for Warm -Hot Type  
 
Energy Efficiency 
Rating  Normalized Standing Loss per 24h, Est,24  
(kWh)  
Class 1  Est,24 ≦0.032V+0.450  
Class 2  0.032V+0.450 ＜Est,24 ≦0.037V+0.525  
Class 3  0.037V+0.525 ＜Est,24 ≦0.042V+0.600  
Class 4  0.042V+0.600 ＜Est,24≦0.048V+0.675  
Class 5  0.048V+0.675 ＜Est,24≦0.053×V+0.750  
 
   6 Table 4 Energy efficiency rating  standard  requirements  for Iced-Warm -Hot Type  
 
Energy Efficiency Rating  24-hr Energy Consumption E 24 (kWh)  
Class 1 E24≦0.054×Veq +0.270 
Class 2 0.054×Veq +0.270＜E24≦0.063×Veq +0.315 
Class 3 0.063×Veq +0.315＜E24≦0.072×Veq +0.360 
Class 4 0.072×Veq +0.360＜E24≦0.081×Veq +0.405  
Class 5 0.081×Veq +0.405＜E24≦0.09×Veq+0.45  
Note:  
1. Veq shall be d efined the same as Table 2