DaveBP said:All other things being equal, what have the Romans ever done for us?
Gina Lollobrigida
DaveBP said:All other things being equal, what have the Romans ever done for us?
JimboM said:DaveBP said:All other things being equal, what have the Romans ever done for us?
Gina Lollobrigida
I was wondering the same thing too. Also, a related question, do induction fans need to be cleaned. I would imagine they would get gunked up over time, whereas a push fan is pretty care free.Floydian said:Are there any longevity issues with induced draft fans being exposed to more heat?
Also, are any boiler manufacturers using ECM fan motors yet?
Noah
ewdudley said:No, quite the opposite. As conditions change and the characteristics of the primary combustion take off out of control in one direction, with induced draft the flow of secondary air flow will take off in an aggravating direction, and now the control needs to manage both simultaneously, while controlling the fan speed as well. It's just not a good recipe for a control system that works correctly. But for as much as the Austrians enjoy complexity for its own sake I'm not surprised they've taken up the challenge.
--ewd
free73degrees said:I was wondering the same thing too. Also, a related question, do induction fans need to be cleaned. I would imagine they would get gunked up over time, whereas a push fan is pretty care free.Floydian said:Are there any longevity issues with induced draft fans being exposed to more heat?
Also, are any boiler manufacturers using ECM fan motors yet?
Noah
Piker said:free73degrees said:I was wondering the same thing too. Also, a related question, do induction fans need to be cleaned. I would imagine they would get gunked up over time, whereas a push fan is pretty care free.Floydian said:Are there any longevity issues with induced draft fans being exposed to more heat?
Also, are any boiler manufacturers using ECM fan motors yet?
Noah
This is why the draft induction models generally always require thermal storage. On a draft induction boiler with thermal storage and decently dry wood, the fins on the fan stay very clean. A light brushing to remove fly ash is all that's required, and can be done when you brush the tubes in the heat exchanger.
Idling a boiler with draft induction would likely cause problems.
cheers
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