General Specifications; Considerations - Hitachi YUTAKI S Series Technical Catalogue

2 General data
General specifications

2.4 General specifications

2.4.1 Considerations

• The sound data is based on the following conditions:
Outdoor ambient temperature (DB/WB): 7/6ºC.
-
- Water inlet/outlet temperature: 47/55ºC (mark: *1); 30/35ºC (mark: *2).
- Distance of the unit from the measuring point: At 1 meter from the unit's front surface; 1,5 meter from floor level.
- The sound pressure level is measured in an anechoic chamber, so reflected sound should be taken into
consideration when installing the unit.
- The sound power level is measured in a reverberant room, in accordance with the standard EN12102. Used
environment conditions are the same that specified in EN14511 for performance test.
• The nominal water flow rate is calculated under the following conditions:
Outdoor ambient temperature (DB/WB): 7/6ºC.
-
- Water inlet/outlet temperature: 47/55ºC (mark: *1); 30/35ºC (mark: *2).
• Regarding data market with marked *3, it corresponds to the height of the unit with the minimum mounting foot
height. This value can be adjusted up to +30 mm.
• For specific details about data corresponding to the working range, please refer to the chapter "5. Working
Keywords:
• DB: Dry bulb
• WB: Wet bulb
38 TCGB0123 rev.2 - 10/2019
range".