We just moved into a 96 year old house in September. It has a hot water
boiler with some old/some newer radiators around the house. The heat has
been pretty steady and good. A few days ago the temp seemed to drop a bit,
so my girlfriend turned it up, and it didn't go up, so the next day she
turned it up again. Still no change.
I pulled the thermostat off the wall and tipped it all the way to one side
(old mercury type) and the boiler kicked on. So since the thermostat was
pretty old, I went and bought a new one. Wired it up and all seemed good.
The boiler was running, etc. But after all day yesterday and last night it
won't get above 60 degrees in the house. It has been very cold here the last
two days (about -4 without the wind chill).
So my question is, could this be something with the thermostat since it
seems to be steady at 60 (even though the thermostat is set at 74). Or is
there something with the boiler that I can check for?
Thanks in advance for your help.
Dont listen to Stormin, you have not proved the thermost is bad and alt
Hvac is Not the place.
"The Wall" is.
But here is an idea. Is the boiler running constantly, what temp is the
aqua stat at, what is the temp and water height, " altitude " on the
gauge, Is the recirculator pump running. Did you bleed the radiators of
air, are they hot to the top. Answer these first.
But honestly you need a tech for a system review-clean-setup-homeowner
lesson. And for your education so you Know whats what. Ignorance can
ruin a boiler in many ways.
Well I didn't buy it at Home Depot for starts, second it's gas fired. The
radiators won't burn you right away, but I don't think you can hold onto
them for too long or it might. Haven't checked the pipes in the basement. My
boss said his house will only got up to about 62 yesterday and he also has
gas fired hot water heat. So I wonder if my boiler/radiator setup just can't
handle that kind of cold?
Not enough info. What type radiators do you have? What is the temp of
your water. Are the burners constantly running when the house wont get
-4 degrees is mighty cold. That is below the design temperature of a
home where I live.
Call someone to look at it before you freeze to death.
Doint listen to Stormy. He hasnt a clue.
And I have no idea what a re-circulator is that Ransley mentioned.
It may not be enough capacity for the house. Is the burner turning off and
on once in a while? If it is cycling properly, the thermostat is working.
What is the aquastat set at? If it is too low, the water will not get hot
enough to carry the heat needed. Find out what the recommended setting is
and use that. You don't want to make steam, just have the water hot enough
to be efficient.
The thermostat usually turns on the circulator pump to get the hot water
moving. Once it circulates, hot water leaves the boiler, cooler water comes
in. The aquastat in the boiler senses that and turns on the burner to heat
it up. Usually there is about a 20 degrees differential. You may want to
have a technician come out and show you how the system operates.
Check out how well the house is insulated, storm windows, etc. That can
save a bundle on heating costs.
Bubba, the recirculator pump, usualy a B&G moves the water through the
system to Heat more evenly then old gravity systems. A common retrofit
50 - 60 yrs ago. If aqua stat is set say at 140 but house thermostat is
still calling for heat the pump will just run till water gets to say 135
then refiring the boiler. Pump stuts off when house thermostst is
On Mon, 20 Dec 2004 14:27:36 -0600, email@example.com (m Ransley)
I know EXACTLY what it is. Ive only been in this for 25ish years now.
Third generation actually. It is NOT called a recirculator. It is
called a B&G CIRCULATOR pump motor. There is no RE in it.
I also havent seen any REFIRING. I usually watch boilers FIRE. Again,
Pump doesnt shut off if the house thermostat satisfies when you are
using a aquastat to control the pump. It will shut off when the water
is somewhere below 140 degrees. That aquastat can also be wired in
several different ways. I can even use a Tekmar control on the boiler
and not even use an indoor thermostat.
Do you need any more help now?
Well Re bubbaass this ass, and put your teeth back in cause you are
slurring. Or maybe its the inbreeding. What I described is exactly the
way my 2 boilers are set up, And a new one . you obviously dont work
much on HWH, a shame, or know much about HWH RE Bubba. So Re this FU
you dipshit hilbilly
Re bubass , you dont like the word RE, well Grundfos calls them
"REcirculators", Maybe you better tell Grundfos they are wrong on the RE
first thing tomorrow! Stop fixing all those hilbilly wood stoves
bubbass and get out in the REal world, you REinbred hillbubba.
A startup cycle is a fireing. A thermostat calling for heat but firing
shut down at aqua stat high temp and REcirculator pump still running
then RE Firing at the lower temp the Aquastat allows, I call a REfire.
If the same water in a loop is REcirculated , the term REcirculating
Try googling REcirculator pumps , REbubass you might RElearn something
Looks like Ransley wins. From the Grundfos web page. :
Hot water recirculation in domestic dwellings and other small
Sure, the pump is for rercirculating water, But look the web site over well.
Check out their online catalog. No recirculating pump to be had anywhere,
they have a bunch on circulating pumps though!
Us guys in the biz call them circulating pumps. Just replaced one about 2
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