It may seem safer, but consider the ramifications of constantly putting a well running plant into transition mode to bring on another chiller in order to exercise it. This activity also impacts our boiler plant who must be prepared to supply the needed steam for a turbine to run. It all seems...
Hello all,
Our plant leader here is telling us we need to circulate water (chilled and condenser) through all of our machines for 1 hour per barrel, per day.. We have a 12,000 ton plant and this takes 6 hours a night. He says this is required by NYC code. I can't find the code. While I realize...
Usually at the BMS controller board in the field, there are toggle switches inside the controller panel itself to over ride the controller command. Usually, depending on what is being controlled , it is at least on the same floor. For instance, the controller managing 30 VAV boxes in "occupied"...
The machine in question is a York MAXE. We are in new York at a 10 million sq ft campus pushing roughly a million gallons of chilled water. There are various levels of tech throughout the system with different advances being simply added to the system. I come from an area of our business (...
I too work in Manhattan, and have opened a number of new buildings there. I have yet to work with a BMS system that I could not get around if I needed to and in every building that I have worked in one of my initial self assigned tasks is considering what I need to do if the BMS crashes and a...
This is one of two new machines installed in the spring. This electric drive chiller has surge protection (no hot gas bypass). For about a week, the operators were surging this unit on the evening hours and accepting it as "a problem with the machine"... the machine began to leak refrigerant...
This unit is a new installation, this is the first winter season it will see. My coworkers seem to be hung up on a chilled water sp of 42 and they like their condenser water above 80. When they run this way, the hot gas bypass is open nearly constantly. I come on shift and raise the chilled...