The mpc or mpcq platinum are steam cycling controls for single boiler or multiple boiler steam heated buildings.
Multiple steam boiler controls.
All boilers require control of three basic elements to operate safely and efficiently.
Tekmar is a great control but.
For steam boilers water flow is used to maintain the drum level.
In this case each boiler has its own boiler master which is an auto manual station that accepts the plant master s output applies a ratio and bias and sends the result out as the demand signal to the combustion controls.
They run steam cycles which are normally 60 minutes long the length of the cycle depends on the type of radiation in the system.
If the demand is for space heating the controller typically determines its target temperature using outdoor reset logic.
This is a project for a high school and the controls have to tie into their existing bacnet temperature control system.
For starters they automatically calculate the proper supply water temperature to the system.
The three elements are water flow airflow and fuel flow.
In multiple parallel boiler arrangements the plant master must output to each boiler s combustion controls.