Cold Bedroom

Michael_31

We have a hot water system with convectors, I can't tell if it 2 pipe but I think so. I turn u the thermostat and all rooms warm up except a second floor bedroom furthest from the Boiler. No matter how hot the rest of the house gets, that convector and it's feed pipes are ice cold. Basement has finished ceiling so I can't see any main line going to that bedroom. When I try opening the vent on the bedroom convector, I get a tiny bit of air then water, so I can't imagine it's an air problem.

I have no access to any feed pipes at the convector, I can't tell if I have diverters in place. I tried to understand the article on that, seems to make sense, but can't relate it to my problem.

How can I get heat to this bedroom?

Brad White

Cold Bedroom

It may be a diverter tee system with a tee reversed or with too much resistance. Even a little resistance though, is not enough to get you to "no flow". You will get some flow so I suspect a reversed tee. Is this a new problem or has it always been so?.

You may have to dig a little deeper.

Absent that, if you really want to warm up a bedroom, you can borrow my Barry White tapes.

Weezbo

there are indeterminables within the systems,occasionally

rather than dig to deep into them ,..physically open all the zone valves first.

then take a flat cake pan and a screwdriver and a small wrench along with a bucket to the offending piece of radiation.

go back down to the boiler and check the pressure on the temp pressure gage...note this then look to make certain the fast fill has the valves open to the supply of fluid entering the boiler...add a little water to make certain ..especially if it is above 8 P.S.I. and below 12P.S.I. if the gage reads less than eight then do not put water into it at that time, instead, turn the boiler off. this is a biggie as you do Not want to add fluids to a hot boiler at low pressure especially if it is "Glowing " red. bad deal altogether .

ok so it was about 12 PSI the fill valve is open go to the convector baseboard "T" and with the cake pan under it let about a half a gallon of water into it, dump that water in the bucket, do it again... then check if either side is hot.if not then raise that end of the pipe a bit more than the other side and drain off another 1/2 gallon ...something should be getting warm within that pipe....you would have to have a really long pipe to that area for it not to or possibly a connection to a potable water cold line.

IF...(Thats a mighty big if) the water comming out is feeling even colder than it was when you first started,.. the heat is thawing ice... out in the "Field" someplace, on its way there..keep letting the water out because moving water will heat and melt the ice...sometimes the heat can only get there from one direction...the ice is still in the line however now that the heat is at least into that piece of radiation it will begin wearing away at the cold.

go back to the boiler check if all the returns are hot..if so..you have the heat fed into the cold from the supply and return. by draining all the fluid you did into the pan and bucket you moved a considerable amount of heat to the area from either the supply or return.drive the heat up into the house ...the idea is the more heat you put into the home the warmer it will be eventually at the cold spot in the line...

if anyone else is trying this at home and you cant get water out then it is either frozen or not connected or completely valved off in two directions...you would want someone who likes doing all this type of thing for a living if that is the case... have them pick up their clairvoyants hat at the haberdashers and blaze on over....

[Deleted User]

Pump on or off....

it DOES make a difference. Supposed to be done w/pumps off and all valves open. And some times, a slight "tug" on the piping to insure it IS the high spot.

Sounds air bound to me...

Look for other vent points.

But do it with the pumps off.

Common mistake.

Been there. done that, too many times...

ME

Michael_31

Coldness

Thanks guys for the advice. I'm at a loss.

This seems to be a new problem. We've been here for 14 years, and while this bedroom (my son's) is the farthest from the boiler and has always been sluggish with heat it has never failed to heat up.

I have tried the draining of water from the convector. With the system on and valves open. Water did drain, it was at first cold then body temp then we started to get some heat. Heat did not go all the way across the convector. Water eventually stopped coming and heat left. System still pumping out the heat elseware.

I can't tell what is return and what is supply - but at the boiler everything is hot.

Maynard

1/4 turn valves

Does The Convector Have A Shutoff Valve Under It?
Sometimes These Valves Get "Touched" And Are No Longer Open.
The Valve Will Have Arrows On It For Open And Closed...They Should Only Spin 1/4 Turn Unless Stop Is bad.