two stage fire for steam systems

tom stockard

Does anyone know if there is any substantiated savings for two stage fire on steam systems in the 350-550 mbh input size. Are there any other upsides or downsides?

Firedragon_4

There's alway a savings in multiple

firing rates, but at what pressures are we talking? If there's not enough pressure to do the job, step-firing can be tricky. In process apps at 75 psi and more savings can go to 20%.

sal_2

thermocupling

I like to know wy are four boiler in bsmt. all the same size and name.....burnham 203 one of them i after change the thermocupling two or three times a year.
tankyou.........