Field Setting SiBE31-801_C183 Test Operation3.2.6 Setting of Low Noise Operation and Demand Operation(1) Setting of Low Noise OperationBy connecting the external contact input to the low noise input of the outdoor unit externalcontrol adaptor (optional), you can use low noise operating.A. When the low noise operation is carried out by external contacts (with the use ofthe external control adaptor for outdoor unit)1. Connect the external adaptor for the outdoor unit, and then connect the external input wiringto the low-noise operation input terminal on the terminal block (TeS1).2. While in "Setting mode 2", set the setting condition for set item No. 12 (Setting of externallow noise/demand operation) to "YES".3. If necessary, while in "Setting mode 2", select the setting condition (i.e., "Level 1", "Level 2",or "Level 3") for set item No. 25 (Setting of external low noise level).4. If necessary, while in "Setting mode 2", set the setting condition for the set item No. 29(Setting of capacity precedence) to "ON".(If the condition is set to "ON", when the air-conditioning load reaches a high level, the lownoise operation command will be ignored to put the system into normal operation mode.)B. When the low noise operation is carried out automatically at night (The externalcontrol adaptor for outdoor unit is not required)1. While in "Setting mode 2", select the setting condition (i.e., "Level 1", "Level 2", or "Level 3")for set item No. 22 (Setting of nighttime low noise level).2. If necessary, while in "Setting mode 2", select the setting condition (i.e., "20:00", "22:00", or"24:00") for set item No. 26 (Setting of start time of nighttime low noise operation).(Use the start time as a guide since it is estimated according to outdoor temperatures.)3. If necessary, while in "Setting mode 2", select the setting condition (i.e., "06:00", "07:00", or"08:00") for set item No. 27 (Setting of end time of nighttime low noise operation).(Use the end time as a guide since it is estimated according to outdoor temperatures.)4. If necessary, while in "Setting mode 2", set the setting condition for set item No. 29 (Settingof capacity precedence) to "ON".(If the condition is set to "ON", when the air-conditioning load reaches a high level, thesystem will be put into normal operation mode even during nighttime.)Setting ContentLevel 1 Set the outdoor unit fan to Step 5 or lower.Level 2 Set the outdoor unit fan to Step 4 or lower.Level 3 Set the outdoor unit fan to Step 3 or lower.
