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james doyle
super hot room

i have a two family home built in 1914; as the family grew, we separated the 2nd floor from the 3rd, leaving a 1 br 3rd floor apartment and adding 3 bedrooms to our 1st and second section. stairs, electric, and water were separated for each unit, the forced hot water heating never was. the second floor bedrooms are heated by the unit that heats the 3rd floor unit. one second floor br has the original 3 ft tall radiator and can reach 79 degrees when the thermostat (situated in the 3rd floor kitchen) is set at 68 degrees! hard to sleep in a too hot room!
i have turned the valve at the base of the radiator clockwise to the stop, about one full turn, but it seems to have no effect on the flow of hot water thru the unit. are radiators arranged in 'series' and the valves never completely stop the flow or is the valve broken?
thanks to anyone who knows!
jim in brookline

JLMCDANIEL
Re: super hot room

As old as that valve is it's probably just bad. You can replace with new manual or a thermostaticly controled valve.
Jack

NashuaTech
Re: super hot room

James:

It's almost impossible to tell what kind of piping arrangement you have there---if you check in the cellar for how the pipe are arranged for the 1st floor,(or any area where the pipes are exposed to view) that may give you a clue.

If it's a SERIES arrangement, like you inferred, the guts may have been purposely taken out of the valve on the offending radiator so the system can at least run.

There are several ways to skin this cat if you can't determine how the pipes are arranged--- one would be to build a radiator cover of decorative sheet metal (HD/Lowe's) & surround most of the rad with pink blanket insulation.

If you know how to open the aquastat cover on the boiler, you can reduce the hot water settings to 140 degrees low limit, 160 degrees high limit---this may lower the offending rad a few degrees at least.

If you know how to shut down, drain & refill/start up the boiler system, you could install ~4' of baseboard ($30) & remove the rad altogether.

If you want to replace the valve, you would have to shut down/drain the system & check if the present valve is connected in a series arrangement before you attempted this.

http://www.easy2.com/cm/flash/generic_ht_index.asp?page_id=35706034
http://www.thisoldhouse.com/toh/video/0,,20053533,00.html

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