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One of the problems I've seen with running boilers by which one has the least amount of hours is during a download. Then all the hours ar set to zero and system doesn't know what to do. I've always put a command to select boilers if all the hours are the same.
Originally Posted by Paladincenter Hi, I am new to BMS and have been tasked with upgrading from 2 Cleaverbrooks oil burners to Weil Mclain Ultra 750's. The installation is complete and fired the units up this morning. Now I need to tie them into the BMS. I am running and old metasys system hyper terminal 5.1 to control the facility. What I am looking to do is wire the new WM boilers into the existing metasys. I am also planning to upgrade to an NAE should I do that first? Any help would be greatly appreciated. Andrew www.paladincenter.com I am controlling 4 ultras from a metasys UNT1144-0 It has 4 0-10vdc outputs which we use to control the firing rate of each boiler. We also monitor the alarm contact on each boiler so the EMS can know if a boiler is locked out. The building headend controller is an FX-60 which works well with all of the N2 bus devices we have. There is a default program in the UNT to control the boilers with outdoor air reset, but we wrote some custom control objects in the FX that do a better job of deciding how many boilers to run and which ones have the least hours on them.
Connecting Metasys to 2 new Weil Mclain Ultra 750's Hi, I am new to BMS and have been tasked with upgrading from 2 Cleaverbrooks oil burners to Weil Mclain Ultra 750's. The installation is complete and fired the units up this morning. Now I need to tie them into the BMS. I am running and old metasys system hyper terminal 5.1 to control the facility. What I am looking to do is wire the new WM boilers into the existing metasys. I am also planning to upgrade to an NAE should I do that first? Any help would be greatly appreciated. Andrew www.paladincenter.com
Connecting Metasys to 2 new Weil Mclain Ultra 750's
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