Infrastructures (Air Conditioning)soldani, passaquieti - 16:09 Thursday 22 September 2022 (57154)
Print this reportNew frequency for NEB AHUAccording with R.Passaquieti, due to perform some flow-rate tests, a new set for AHU fan inverter has been setted, from 40 Hz to 35 Hz NEB AHU Off from 15,09 to 15,30 (local time)
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R. Passaquieti - 17:47 Thursday 22 September 2022 (57155)
Print this reportToday a few more actions were performed on the NEB HVAC - the boiler temperature set point was lowered at 11:50 LT from about 65 deg. C. down to about 58 deg C. - the AHU PID parameters were also changed:(14:04 LT) Integration time increased from 500 s to 600 s; (16:48 LT) Proportional bandwith increased from 3 to 8.
These actions followed the complete restart of the NEB HVAC working conditions on 20th September, in which the new set point of the cold circuit was set at 17 deg C. (see elog. 57127)