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Wood Doctor / Little heat after circulator replacement
« on: November 29, 2012, 07:50:54 PM »
I recently had to replace the circulator pump on my non-pressurized wood doctor. The pump the stove was installed with was a Grundfos UP26-99 which is no longer available. They crossed it to a Grundfos UPS26-99 3-speed pump. The problem I am having is it doesn’t seem to be producing enough heat to my forced air plenum. Last winter I had all kinds of heat and even cracked the windows all winter long. Now, I can’t seem to get enough heat blowing up thru the floor grates. I measured the temperature at the grate and it is only 26 Celcius therefore causing the blower to run continuosly to bring my home up to a warm temperature. I have tried draining some water from the supply line ahead of the circulator and also removed the coil in the plenum to see if it was plugged. I also tried all 3 speeds on the circulator with same results. The supply side of the coil is very hot to touch but the return is not. This new UPS26-99 circulator has a check valve in it where the original didnt.
It is getting pretty cold these days and any help or suggestions would bve appreciated.
Thank you,
It is getting pretty cold these days and any help or suggestions would bve appreciated.
Thank you,
2
Wood Doctor / Circulator UP26-99 vs. UPS26-99
« on: November 29, 2012, 07:49:59 PM »
I recently had to replace the circulator pump on my non-pressurized wood doctor 8000. The pump the stove was installed with was a Grundfos UP26-99 which is no longer available. They crossed it to a Grundfos UPS26-99 3-speed pump. The problem I am having is it doesn’t seem to be producing enough heat to my forced air plenum. Last winter I had all kinds of heat and even cracked the windows all winter long. Now, I can’t seem to get enough heat blowing up thru the floor grates. I measured the temperature at the grate and it is only 26 Celcius therefore causing the blower to run continuosly to bring my home up to a warm temperature. I have tried draining some water from the supply line ahead of the circulator and also removed the coil in the plenum to see if it was plugged. I also tried all 3 speeds on the circulator with same results. The supply side of the coil is very hot to touch but the return is not. This new UPS26-99 circulator has a check valve in it where the original didnt.
It is getting pretty cold these days and any help or suggestions would bve appreciated.
Thank you,
It is getting pretty cold these days and any help or suggestions would bve appreciated.
Thank you,
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