CFT-acting alittle funny!

CFT-acting alittle funny!

PostBy: plumb-r On: Mon Nov 16, 2009 7:15 am

I have a Hitzer model 608 stoker that came with a coal-trol system. The question I have is when the the convection fan goes to turn on ,its on ,off,on,off,ect... for about a min.or sointill it decides to stay on. Is this a normal function? The coal-trol stat is around the corner, not in direct line of sight of the stove, so the fan is not blowing on the stat. Any suggestions as to whats going on . It gets a little anoying. Thanks for any help! :)
plumb-r
 
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 608 Energy Master I Stoker

Re: CFT-acting alittle funny!

PostBy: WNY On: Mon Nov 16, 2009 7:26 am

YES, Some of experience that too.
If it's idling a lot, and if it's right near the CFT threshold and FR is about the same, it will cycle a few times when it kicks on.
I believe I lowered my CFT settings, since the stove normally doesn't run there (idle) often, but once you start burning hotter, it normally runs consistently.

Info from CoalTrol
Convection Fan Start/Stop Cycling
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon

Re: CFT-acting alittle funny!

PostBy: pvolcko On: Mon Nov 16, 2009 2:38 pm

Plumb-r,

We've known of this issue since around this time last year. It does not cause damage to the motors or the stove in any way, it is a sound/noise annoyance more than anything else.

As WNY said, the workaround for this is to lower your CFT setting to just below your normal idle FR reading. Alternatively, given it is still pretty warm out and you're probably running low FR's still, set the CFT higher so it only comes on when there is a need for a kick of heat.

You can also use manual fan control to set the speed of the fan where you want it. The fan control will revert to automatic when the feedrate gets high enough for enough time. However, with lower FR's the manual fan mode should hold for a long time, avoiding the start/stop cycling issue.

If neither of these is satisfactory please feel free to contact us (315-299-3589) to arrange to have a software fix installed on the thermostat. You will be without the thermostat and the use of the stove for a few days while the thermostat is shipping and being updated, so if you want this done it is better to get it done soon or else wait until after this heating season.
pvolcko
 

Re: CFT-acting alittle funny!

PostBy: plumb-r On: Mon Nov 16, 2009 7:55 pm

Thank you for the posts. I'll use the man fan settings intill it gets colder. It sounds like this happens when the stove idles alot. It's good to know there is help to get me through the learning curve. :)
plumb-r
 
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 608 Energy Master I Stoker