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[DaveWertz]

Well after 6 hrs of the flow valves being opened up all the way and the pump on the highest speed I didnt see any change in house temp. I set it at 74 and it stayed at 70 to 71 tops. Seems like it will get to 72 for a brief minute then back down to 70. 70 is the magic number. The pump has been running for a while now trying to keep up. I know there is no air in the lines so now what? Is the pump going out or do I have another issue?

[DaveWertz]

I set the thermostat at 70 just to see what it would do and it dropped to 67 in the house. I dont understand the temp differance no matter what temp i set it at. But I know it wont go past 72. Its not that cold outside, not cold enough to make the house chilly. Last yr at witu around the same temps outside it worked great to keep the house within 1 degree of what the thermostat was set at except on single digit days it would be 4 degrees off give or take a few more

[baldwin racing]

I set the thermostat at 70 just to see what it would do and it dropped to 67 in the house. I dont understand the temp differance no matter what temp i set it at. But I know it wont go past 72. Its not that cold outside, not cold enough to make the house chilly. Last yr at witu around the same temps outside it worked great to keep the house within 1 degree of what the thermostat was set at except on single digit days it would be 4 degrees off give or take a few more

dave,
 maybe try a new thermostat or is it new? like a honey well digital one. maybe try another pump like you mentioned....its weird that the temp is off like that? maybe close valves on both sides of pumps (while motor is shut off) unbolt motor and check (inspect)make sure they are not clogged with junk? just an idea I have seen stuff plugging them so they wont flow like they should.....
kelly

[DaveWertz]

The dealer just called me back. He said to try a new pump. It will not get past 72. And it struggles to get there. Maybe from having air in the lines and running air threw the pump it just made it weak. I sure hope that is all it is.

[DaveWertz]

Whats the differnece between the taco 007-F5 and 007-F7? I see some have flow check valves. Is it worth to get one equipped with this? Both are cartridge pumps, which dont seem like a bad idea for next time. I can switch everything out without taking the whole pump off? But both the F5 and F7 seem to be the same??

[MattyNH]

It sounds like you need a bigger pump like a taco 011 on the boiler.. Buddy of mine went through the same thing as you.. The bigger pump solved the problem.. No issues.. I wouldn't get what the dealer told you

[DaveWertz]

The wilo I have now is only a 1/15hp. Im looking at the grundfos 15/58 3 speed. I am also looking at the 011s. Not sure which one I want to get. Both seem real good

[DaveWertz]

When they say a pump max psi is 125, does that mean it always runs at 125psi? I have the flow control valves and I think the max psi for them is 125psi. Some of the pumps I am looking at go well over that. Most around the 150psi mark. Maybe I am limited to what i can get pump wise....

[DaveWertz]

Im also liking the Grundfos 15-55 with the digital read out. I like the way some of those pumps read out the GPM and watt usage. The taco bumble bee is pretty neat also. Would both of these pumps be sufice? Either that or I will have to pony up $233 for the Taco 0011. Remember my pumps are not on the boiler they are in the basement. I have a 55ft run per each loop from the stove to the pump.

[MattyNH]

Im also liking the Grundfos 15-55 with the digital read out. I like the way some of those pumps read out the GPM and watt usage. The taco bumble bee is pretty neat also. Would both of these pumps be sufice? Either that or I will have to pony up $233 for the Taco 0011. Remember my pumps are not on the boiler they are in the basement. I have a 55ft run per each loop from the stove to the pump.

$189.99 for the taco 011 pump on altheatsupply.com..Shipping is 15.27 to delver in my neck of the woods

[baldwin racing]

The wilo I have now is only a 1/15hp. Im looking at the grundfos 15/58 3 speed. I am also looking at the 011s. Not sure which one I want to get. Both seem real good

Dave,
I run grundfos 15-58 and like them I have had no issues with my set up they are only 2.5 years old...Kelly I leave them on speed 3....I am running them on 1 inch pex with no trouble. longest run I have is from boiler to house 75 feet one way...no issues.....
chariot-supply sell them for 86.99 free shipping on ebay out of ny
kelly

[idahohay]

When they say a pump max psi is 125, does that mean it always runs at 125psi? I have the flow control valves and I think the max psi for them is 125psi. Some of the pumps I am looking at go well over that. Most around the 150psi mark. Maybe I am limited to what i can get pump wise....

Dave, I'm pretty sure the 125psi number you are referring to is  the maximum allowable pressure of the system you are trying to circulate water within and has nothing to do with the circulating abilities  of the pump.  For example: if your domestic hot water was set up with recirculation, your household pressure might be as high as 60 psi but the pump moving the hot water around the loop doesn't really care.

[DaveWertz]

So running a pump higher than the flow valves  max psi wont hurt anything? Thats my concern

[DaveWertz]

Im also liking the Grundfos 15-55 with the digital read out. I like the way some of those pumps read out the GPM and watt usage. The taco bumble bee is pretty neat also. Would both of these pumps be sufice? Either that or I will have to pony up $233 for the Taco 0011. Remember my pumps are not on the boiler they are in the basement. I have a 55ft run per each loop from the stove to the pump.

$189.99 for the taco 011 pump on altheatsupply.com..Shipping is 15.27 to delver in my neck of the woods

Thats a better price than I found. Thanks! I think this one is my best bet

[idahohay]

So running a pump higher than the flow valves  max psi wont hurt anything? Thats my concern

No it won't hurt anything. Those numbers are just a reference telling you the pump or flow valve will function properly in systems pressurized to that amount, just like all pipe has a safe working pressure. Again, when your pump is running, it isn't pumping at anywhere near 125psi.  These pumps are just circulators that move water in a loop and only need to work against the friction of the pipe, fittings, etc. and the system pressure doesn't matter.

I'm guessing your system is non pressurized anyway and the water from your boiler is what circulates through either radiators, in floor tubing, or water to air heat exchanger.