Carry out the test according to the method specified in 5.2 and measure the noise value of the equipment. The mute level of the appliance is divided into three levels, among which level 1 has the highest noise level. The grading indicators are shown in Table 1. When the appliance is burning at rated load, the front and side noise values as well as the noise value during preheating should meet a certain level of silent performance classification. If the levels of each individual indicator are different, the comprehensive assessment will be a lower level.
T/CAQI 160-2020 history
2020T/CAQI 160-2020 The whole process of low noise classification evaluation specification for domestic gas instantaneous water heater