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Old 12-18-2013, 11:09 AM   #1
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Adjusting radiator temp.


I am above the average DIY'er in almost all things, just have never worked on radiators.

The house we just bought has A/C feeding upstairs only through air handler(not heater) in attic. It has a new boiler and radiator heat throughout.
Thanks air is much hotter upstairs, plus the upstairs will be storage/under construction as we are renovating the house while living there.

I assume I can close the valve and essentially turn a few of the upstairs rads off.
For next winter when upstairs will be used as living space, is there anyway to meter the flow into each rad: turn them down, but not off, without re-doing the supply lines into separate zones?

Am I better off adding auxiliary heat to the main floor (mostly one big open room)?
Also considering a mini-split for auxiliary heat/cooling on the main floor.

Any thoughts/suggestions?
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Old 12-18-2013, 06:05 PM   #2
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Adjusting radiator temp.


Quote:
I assume I can close the valve and essentially turn a few of the upstairs rads off.
For next winter when upstairs will be used as living space, is there anyway to meter the flow into each rad: turn them down, but not off, without re-doing the supply lines into separate zones?
Ayuh,.... Generally, turnin' off the radiator will allow it to freeze, 'n crack, destroyin' it,...
Where are ya located,..??

It really depends on How yer system is plumbed now,...
Lotsa ways it coulda been done,...
Some pictures of the near boiler plumbin', 'n the valvin' will help the Pro's help you,....

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Old 12-20-2013, 09:36 AM   #3
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Adjusting radiator temp.


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Originally Posted by Bondo View Post

Ayuh,.... Generally, turnin' off the radiator will allow it to freeze, 'n crack, destroyin' it,...
I'm talking about methods to lower temps from 80 to 60-70.
I don't think freezing will be an issue.

Here are some more pics:
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Old 12-20-2013, 09:44 AM   #4
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Adjusting radiator temp.


If the valve on the inlet of the radiator is a gate valve (or I add a gate valve)
Couldn't I just turn it down.
That would partially close it to restrict the flow to certain radiators to even out temp?
How often does the pump cycle? My idea would only work if the system is designed to have a big difference in supply and return temp. If the system is designed to have a small temp drop across the radiators, then I would need a valve that would automatically open and close to regulate temp.
I'm an engineer and could design that system, but I wouldn't want to pay for it. Ha
I'm sure there's a better way.
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Old 12-20-2013, 02:34 PM   #5
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Adjusting radiator temp.


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Originally Posted by michaelcherr View Post
If the valve on the inlet of the radiator is a gate valve (or I add a gate valve)
Couldn't I just turn it down.
.
Sure. Don't turn it off though. Leave a trickle to protect against freezing.
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Old 12-21-2013, 11:00 AM   #6
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Adjusting radiator temp.


Easiest way to protect the pipes and radiators from potential freezing while still reducing the heat loss to areas you aren't heating is to cover the radiators.
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Old 12-21-2013, 11:09 AM   #7
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Adjusting radiator temp.


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Originally Posted by old_squid View Post
Easiest way to protect the pipes and radiators from potential freezing while still reducing the heat loss to areas you aren't heating is to cover the radiators.
Thanks, great idea. I'm gonna try that first.
I'm a little scared to touch the valves.
If a valve hasn't been moved in 30 years, could start leaking when I turn it.

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