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Post by wingnut on Feb 8, 2021 10:52:55 GMT
Now then
Should all TRV’s be on the left or the right or does it not matter
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Post by rocketmanbkk on Feb 8, 2021 11:08:15 GMT
Most are bi directional now
I usually have mine in the right
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Post by woodbine66 on Feb 8, 2021 11:43:48 GMT
As Rocky says, most TRVs are bi-directional so not important which side. Because many TRVs weren't bi-directional years ago, I still tend to put them on the flow side out of force of habit. But the choice is yours.
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Post by wingnut on Feb 8, 2021 12:14:48 GMT
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Post by tomplum on Feb 8, 2021 16:48:44 GMT
it does not say if they are bi derectional, usually there is an arrow on the valve showing the direction, if its a bi directioal the arrows point both ways, I can't see from the picture that is the case, So they might not be,  |
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Post by DIYDafty on Feb 8, 2021 17:22:06 GMT
I put them on the flow if I can. My theory is when they shut off, there's just that little bit more pressure available to the pump than if they had the entire rad as a dead leg.
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Post by dickpuller on Feb 9, 2021 6:39:21 GMT
With bi-directional TRVs some say keep them away from corners & will fit them on the left side for that reason, however that’s a loads of bolloxs, the ambient temperature in any room is the same, corner or not!! There will be variations in room temperature at large glazed area & Windows; colder if the external temperature is lower than the room & hotter with Solar Gain etc if the Sun shines.
Even on a day in Winter, with south facing window & the Sun shining - there can be a significant Solar Gain!
With Radiators giving off a convected Heat, the ceiling is the hottest part of any room.
The Flow rate through TRVs is horrendously poor. I fitted Towel Rail TRVs recently with a reduced bore in the valve body, it was about 6-8mm!! Absolutely shite!!
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Post by dickpuller on Feb 9, 2021 6:52:09 GMT
These are cheaper, deffo bi-directional & plus; the Lock Shield Valves, though a different Rad Tail & nut from the TRV’ will give you a better flow rate. www.toolstation.com/contract-angled-trv-lockshield/p12821As we move away from high temperature Central Heating, I can’t see much of a future for TRVs. With the use of Heat Pumps, efficient Condensing Nat Gas & Hydrogen Boilers, and Systems Running at 50/30oC - they’re history!! |
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Post by wingnut on Feb 9, 2021 10:34:34 GMT
it does not say if they are bi derectional, usually there is an arrow on the valve showing the direction, if its a bi directioal the arrows point both ways, I can't see from the picture that is the case, So they might not be, The description on that site is quite poor, I’ve checked in a different site and can confirm that they are bi-directional |
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Post by tomplum on Feb 9, 2021 13:33:36 GMT
well it should not matter which side you fit them, I usually put them all on the same side, My preference is the right hand side just because I'm right handed, I also fit the bleed valve on the right too ,
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