circulator pump

Doug_40

I am trying to figure out way the bedrooms on north side of house are always colder then the rest of the house. I have hydonric base board heat. Main level of house is split into three sections. First run of pipe feeds front side of the house to include master bedroom. Second run of pipe feeds dining room and kitchen. Third run of pipe (I had this installed when the boiler was replaced because of the cold bedroom) feeds 2 bedrooms. Circulator pump was installed on the returned side about 18" above boiler. Expansion tank is installed onto the inline air separator on the supply side of the boiler. Can it be the location of the circulator pump that is causing the bedrooms to be colder? Bedrooms are at the end of the run. Any help would be greatly appreciated. Doug

Timco

The north side is the cold side...your circ that services the b-rooms that are cold should be on it's own t-stat so you can take advantage of zoning. Sounds like the rest of the house is satisfied b-4 the b-rooms are. Circs should pump away from the ex-tank..but that may give you air issues...not likely lack of heat in a zone. BB heat wants 180* water.

Tim

Doug_40

I guess where I was going with the cirulator pump location is possible air trapped in the pipe at the end of the run. Since I had the back half of the house run split, I am confused because from the hot water supply from the boiler that run only serves two rooms and returns to the boiler. It's not a very long run and is piped using 3/4".

Timco

If you are worried about air, purge, purge, purge!!! (then bleed)

Tim

John Ketterman

As long as you are getting heat in those rooms, more flow won't get you more heat (well, a bit more heat, but not worth the effort). You need to circulate longer, not faster, i.e. put these rooms on a zone with a separate thermostat, as already suggested. Since the piping is already set up for it to be a separate zone, it should be easy, just wiring. Or maybe there's air in the radiators---that does make a difference because it means part of the radiator isn't getting hot. It could be many things.

Unknown

Doug

It could be air. If you move the circ to pumping away from the boiler and have your separator between the boiler and that circ, in no-time at all, it will do its job and remove the air, if there-is any. Zoning, as already mentioned, is a great idea, but you really should move the pump regardless. Doing that would remove the air possibility from your mind! As far as the amount of heat goes, that depends-on whether or not a proper heat-loss was done on the rooms to begin with, or it could be a balancing issue. I would move the circ. first.
Hope this helps!

kevin_51

circulator

circulator pump shuts off the same time burner shuts off is this normal hwbb heat with a honeywell L8148A aqustat

kevin_51

circulator

circulator pump shuts off the same time burner shuts off is this normal hwbb heat with a honeywell L8148A aqustat

Unknown

Kevin

> circulator pump shuts off the same time burner

> shuts off is this normal hwbb heat with a

> honeywell L8148A aqustat



Hope this helps!

Dave

Unknown

kevin,

When you say, "circ shuts-off with the burner", I assume your talking-about when the thermostat is satisfied? If so, yes it is normal. If the burner stops on "limit", the circ keeps operating.
Hope this helps!
Dave

Doug_40

First thanks to everyone trying to help on this one. Tonight I tried purging any air from the system. I let the boiler cool down with the power off. I then attached a garden hose to the one of the supply side pipes. I opened up the water flow regulator? to introduce fresh water and then opened the valve attached to the hose and let the water run for some time. I had to open the zone the valve manually. I closed the valve and repeated this on the 2 others feeding the upstairs. I had the other end of the hose in a bucket of water, thinking no air could be pulled back into the system. Seemed to help a little as I could feel heat in the bedrooms. I don't have a way to determine how hot the pipes really are other then by feel.

Can anyone gave a stupid HO look me a diagram of how this boiler should be plumbed? Its a Teledyne Lhars Mini Therm II. If I can take a picture would that help?

brucewo1b

A Picture is worth a thousand words,

Pistures never hurt and many times shows us the little differences in system setups that make a diference.

Doug_40

Some Pictures

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Pictures

O.k I give, How does one post some pictures? I have created three photos in a JPG Format. But I can't see to add them. I can see them under browse, just can't pass that point. At this point I am ready to tell the wife and kids to throw an extra blanket on and deal with the cold bedrooms.

Bob Sweet

When you posting, hit attachment,

hit browse, open the jpg, hit add, and that should do it. Atleast I think so!

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Doug_40

Doug_40

Bob, I been tying that. I hit browse. I locate the three pictures in "My Pictures" but when I hit add all I get is a bonking sound. I will try again tomorrow when my twelve year old is up, he know more about this then I do. Thanks for everyone's help.

Doug_40

Pictures posted

Finally figured out how to add pictures (with some help) Does this boiler look like it is plumbed correctly. By the way purging the system of air seemed to help. I picked up 2 degrees in the master bedroom. Since this has been going on for the past thirteen winters and I can feel a temperature difference between the hallway and outside wall of the bedroom (a distance of 13 feet) I purchased a little temperature gage and placed it over the thermostat located in the hall. Both read 70 degrees. Thirteen feet into the master bedroom I was reading 66 degrees, after purging the system I am reading 68 degrees.
Thanks

Doug_40

Pictures of boiler added

Any help on this one would be appreciated. I don't know why this is bothering me other then you can really feel the temperture difference. I have added R-25 insulation to the attic and replaced the windows with new ones. By the way this is a great website. You guys do some cool installs; I liked the hotel pictures that Jeff placed.