urdahere wrote:Installed a Leisure Line Pocono furnace on February 17th, 2012
urdahere wrote:Still trying to understand the relationship of the feed rate to the set temp.
My temp. set is 72 days and 68 nights.
Feed rate is 5 MIN and 34 MAX ( this was set by the installers and I have not changed it) Is this a good setting? Seems to be working fine and I really don't want to screw around with it. Is there a better configuration than this?
Joe
Flyer5 wrote:urdahere wrote:Still trying to understand the relationship of the feed rate to the set temp.
My temp. set is 72 days and 68 nights.
Feed rate is 5 MIN and 34 MAX ( this was set by the installers and I have not changed it) Is this a good setting? Seems to be working fine and I really don't want to screw around with it. Is there a better configuration than this?
Joe
FR is just the display of what the thermostat is doing based on amount of difference between the set point temp and actual ambient temp and time. The Min is only considered if the FR is zero for the most part. The Min is like the idle setting on your car you want it set low enough that too much heat is not being dumped into the room or up the stack since the convection blower(s) are not running when operating on the min. It can also be used if your chimney is marginal to help put more heat up the chimney if needed at idle. The Min and Max are only for the feed motor the number entered is based on seconds/cycle ( approx 2 minutes/cycle) of the feed motor. The Max is a little more complicated when the FR is at 99 your feed motor will run for how ever many seconds that the Max is set at. If the FR is 50 the feed motor will run approx 1/2 of what the Max is set at, so for the feed motors operation you can think of the FR being a percentage of the time entered for Max. But your time will never go below the min setting so as to maintain the fire. Also the max should be set so you have a full grate of fire when the FR is at 99 and you want to make sure no hot coals are dropping into the ash pan and being wasted. It basically dictates the max fire size of the stove. If it is too low then you will not get full benefit of the stove, Too high and you will waste coal.
The other use of the FR is control of the convection fan start point and speed. If the CFT is set for its default of 8 then your convection fan will only run once the FR is 8 or above. It is not quite a percentage of the fan speed but for most purposes it can be thought of that way. Example if the FR is at 50 then the convection fan should be running approx half speed.
I hope this helps. It really is not that complicated but it is a little difficult to explain. Thanks Dave
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