FB Live Training - Our new Auto-balancing TRV
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- เผยแพร่เมื่อ 5 ธ.ค. 2022
- Watch this training video about Drayton's new Auto-Balancing TRV.
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Good trainer and presenter!!!
Great video very uwsfull
This is awesome! Very well explained and very timely as I've just installed Wiser Kit2 (Hub, Room Stat plus total of 8 Wiser smart TRV heads) in my home and I've been considering changing out some of the old TRV bodies as they're a bit old, a few are leaky/corroded and often got stuck using the old mechanical TRV heads. I love the autobalancing calibration, and simply leaving the lock shield wide open. And the fact you've created a Web page to help find the flow rate for older existing rads. Seems like you've got everything covered. Well done Drayton. This must be a real game changer for new installations.
Just to add a bit more to my comment above, since installing my Wiser Smart TRV heads I have discovered sometimes when desired room temp is reached the old valves don't shut fully (despite proper fitting and calibration procedure for the smart motorised head), which means that rad will continue to run warm/hot when rads in other rooms are calling for heat, so unnecessarily wasting energy.
This is probably either because the old-style TRV valve body pin is prone to sticking, or perhaps has a build-up of hardened sludge in the valve gate which prevents it closing fully. A knock-on effect seems to be that because the new Smart head is trying but unable to close fully, it causes the batteries to run out of juice prematurely. I have one particular valve that runs out the batteries in about 2-3 weeks, when they should last about a year!
So definitely a strong consideration for swapping in the new auto-balancing valves as part of your Wiser installation.
In my house I've identified 5 out of my 16 rad TRV valve bodies that need changing, but doing ALL 16 (as recommended) will have to wait until I can afford it, but its ok for now because several rads I have completely turned off to save money (horrendous gas prices!) as they're in unused rooms/areas.
Thankyou for your comments!
@@Draytonheating Thanks for responding.
Please add the product name in the title🙏 even in the description would be helpful.
These look to be the same as the Danfoss items that I've had for some time.
Well Ive just been fleeced £750 to have Drayton TRV4s fitted to my heating system and wished Id known these were available as an alternative.
You can balance your heating system using the standard bodies supplied with the TRV4s however, they are not auto-balancing. You set the flow rate to one of 6 positions by turning the valve insert.
Wow very interesting video and you are the master professional 👏
I have the honeywell home evohome system with 9 in total. hr92uk smart radiator valve fitted and I have wireless ATC982G300 touch screen base station the radiator valve 9 in total is your Drayton 15mm The TRV4 Classic and I am using honeywell smart radiators valves hr92uk screwed on your Drayton TRV and the question is the Drayton new valve AUTO BALANCING TRV will it work on the honeywell home evohome smart system? And does the new Drayton AUTO BALANCING TRV can be install on both side ie return or flow side ?
Please kindly let me know thank you waiting for your reply 🙏
You would need to double check with Honeywell but have a look at our Wiser smart radiator thermostats that are definitely compatible. The Drayton Auto-balancing values are available in angled and straight suitable for 15mm compression. Both of these bodies are uni-directional meaning you'll need to observe the flow direction arrow. This means if you fit the angled bodies on the flow side of the radiator the head will sit vertically however, if it's fitted on the return side the head will sit horizontally.
Hi previous comments not showing so adding again : (suitability with valves).
Triple panel rads (type 33) I have various, either 700x1000, 700x1200, 500x1000
Just checked a type 33 for 700x1000, 700x1200, 500x1000 and it gives you the settings for all deltaTs across all 3 flow temperatures. The only one the calculator won't allow for is 300 x 2000.
@@Draytonheating many thanks for checking and confirming. That’s really good of you. I wonder why I couldn’t see it before! Thanks again.
No problem at all!
Can you fit these horizontally on the return pipe observing the direction of flow?
Yes. Best practice is to fit all of them on either the flow or return and not mix and match although this is not always possible.
I have ordered 10 auto balancing valves for my Wiser system but having watched your video I still have some questions. My radiators are column types which are not on your calculator app. I know the output in watts for each rad but it is defined as delta T 50 which I think is a different measurement from your chart of 10 15 20. Also I don't understand the concept of picking your own delta T for rads. Is it not something that is defined by the balancing?
When comparing delta T, it's important that we are talking in terms of differential temperature between the flow and return as opposed to the differential temperature between the flow and the ambient room temperature. Have a chat with out customer services to clarify - 0333 6000 622.
When installing an ashp is the pipework changed to 22mm but the max opening on the valve is only about 7mm.?
The maximum flow rate through the Drayton Auto-balancing valve is 150 litters per hour which may not be sufficient for systems running low flow temperatures or delta T less than 10.
Looks good, but no one is selling these with a white cap !?
The bodies are supplied with a white decorative cap. Alternatively, manual wheel heads are also available: www.draytoncontrols.co.uk/products/radiator-valves/TRV%20Spares%20&%20Accessories/drayton-trv-manual-cap
do these work in conjunction with the wiser smart trvs
yes they do!
hi this was really helpful. does this work with triple panel, triple convector rads? (Type 33). The settings calculator says unsuitable??
Can you tell us what size your type 33 radiator is please?
@@Draytonheating thanks for the reply. I have various, either 700x1000, 700x1200, 500x1000.
and 300x2000
@@Draytonheating hi apologies my comments don’t show! Rads are either 700x1000 700x1200
Can I just change the trv and the body and leave the lock shields as they are Drayton already?
Yes! Make sure to leave the locksheild wide open when using Auto-balancing valves
So can I put these valves in the same room as the room thermostat ?
Yes but you would fit a manual cap instead of a thermostatic head.
So now if i buy the mutyzone is coming with new type or old type?
The Wiser Multizone kits are not supplied with valve bodies but the Wiser Radiator Thermostats are compatible with all bodies in the Drayton range including the Auto-balancing TRV.
but if the boiler pump modulates down , radiators further down will be deprived ?
Best practice when using these valves is to set your pump to the flow rate which is the minimum required to fulfil your system requirements. Modulating flow temperature rather than pump speed is preferable.
Are the auto balancing TRV 4 available to suit 1/2 inch pipework?
The bodies come in angled and straight versions for 15mm compression and is supplied with a 1/2 inch BSP tail for the radiator.
Hi, do these work with Tado smart TRV heads?
You would need to double check with Tado but checkout the Wiser range of smart thermostats that definitely will!
what pump speed should you use
Best practice is to start with the lowest pump speed and see what the temperature response is. If rooms are taking too long to heat up you may need to increase the pump speed.
Can I purchase jut the head as all of my TUV are Drayton
The TRV heads that are supplied with these bodies are the same as the rest of the range. It is the bodies that does the auto-balancing. The bodies are available separately separately to the head using part number - 07 15 560 for angled and 07 15 561 for straight
How much do they cost
Price will be dependent on the terms you have with your supplier. However, they tend to carry around about a £10 premium on the standard TRV4 / RT414
1. Are you planning on releasing a corner version of the auto-balancing valve? So not straight, not angled, but corner one.
2. Isn't the DT achieved from the following:
(flow+return)/2-room temp? So basically for the sake of the argument with the flow at 60, return at 40 (which simplifying is to be achieved via the self balancing valves use) and room temp at 20deg - > ((60+40)/2)-20=30?
DT is not a simple difference of the flow and the return temp!
3. Your support is claiming that the settings for the online calculator are to relate to the radiator, not the boiler.
So when setting the flow temp in the calculator it is to be the temp reaching the emitter, not the flow set up on the boiler. Additionally they confirm the equation for DT to be used is as per the above, not a simple difference of the flow and return.
So in order to get a DT20 one would need to go as low as 50/30 or lower to get in line with your settings chart / online calculator. But then the lowest flow temp in the calculator is 55deg so nothing adds up here.
1. no plans to release corner angle at this point but we will submit your feedback to the product manager. For points 2 & 3 the deltaT referred to is the difference between the temperature of the water entering and existing the radiator, not the difference between flow temperature and the ambient room temperature.