Just for posterity the VRC470 cylinder boost does work - it brings the cylinder up to target temperature then stops. It's the user interface that's gash - it offers room stat overrides on the same screen although this is not clear. RTFM you say - would do if Vaillant would publish the pdfs on line.
Vaillant discontinue VRC 430 before replacement is in stock?
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On the Vaillant website now:
http://www.vaillant.co.uk/installer...tics/controls-2/produkt_vaillant/vrc-470.html
http://www.vaillant.co.uk/installer...tics/controls-2/produkt_vaillant/vrc-470.html
yes i did post i knew nothing about this,
But now i do, 430 rf is not available but 430 hard wired is.
as far as im concerned the new 470is fully available is now in britain as stock and is an easier and better control unit.
But now i do, 430 rf is not available but 430 hard wired is.
as far as im concerned the new 470is fully available is now in britain as stock and is an easier and better control unit.
HI I was wondering if you could elaborate on how the Hortstman control is connected as well as the VRC410.
I am using a VRC400 connected by eBus at present but would prefer to us a simpler control but keep the weather compensation.
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A
ALEC1
It all points to the fact that these big companies don't really understand our industry....I too am having difficulty getting this stuff...and I note this thread was started some 6 months ago
Hufty, if you by pass the vr410, with on off controls are there other parameters you have to change....isn't it as simple as using the 240v link...I would have thought pump blocking would have to be reduced to 0, but then again the 410 may just follow a curve as one would expect
I actually found the 400 series the most intuitive....the 470 is very nice looking and as technically as good as the 430, but I never understand why they don't allow clients to see the current DHW temperature in an accessible screen...
what is a good controller is highly subjective... there are people who don't like numpty on-off stuff and find that complicated!
Hufty, if you by pass the vr410, with on off controls are there other parameters you have to change....isn't it as simple as using the 240v link...I would have thought pump blocking would have to be reduced to 0, but then again the 410 may just follow a curve as one would expect
I actually found the 400 series the most intuitive....the 470 is very nice looking and as technically as good as the 430, but I never understand why they don't allow clients to see the current DHW temperature in an accessible screen...
what is a good controller is highly subjective... there are people who don't like numpty on-off stuff and find that complicated!
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Hi Alec
In that case I've found its best to set the max DHW temp to 65C in the WC control and tell the client they can control their own temperature on the boiler HW knob.
A
ALEC1
except if you use the vr 10 sensor....its not big deal...just a detail...
Can anyone tell me whether it's possible to set different desired temperatures for each of the three time periods, using a VRC470?
No - you can only set day and setback temperatures.
In practice this has not been any problem at all for me, and the combination of the weather compensator and seemingly much more clever thermostat has yielded a much more stable temperature in my house.
In practice this has not been any problem at all for me, and the combination of the weather compensator and seemingly much more clever thermostat has yielded a much more stable temperature in my house.
OK, thanks. That's useful. The reason I ask is that ours seems to be OK during the day, but in the evening the house gets too hot. I'm not sure how to deal with that.
Where is the best source of clear instructions for programming a VRC470?
A
ALEC1
is the controller set to modulating?
what timings do you have the controller on...does it go off during the day? or on 6.00am to 11.00pm
there are many ways of using this controller ... none are right or wrong...
what timings do you have the controller on...does it go off during the day? or on 6.00am to 11.00pm
there are many ways of using this controller ... none are right or wrong...
I'm not sure. Where do you check to see if it's set to modulating? What does that mean?
We currently have it set on all day.
A
ALEC1
its in installer level, alomg wtith other variable parameters..
it is under the parameter room control, the options are none, ie following the outdoor temp only, modulating ie taking into consideration the room temp too, or thermostat, which shuts the boiller down at the target room temp, and then comes on when the room temo drops..
the forst two give the better heatong performance, the latter can only measure the temp in one place.. and other rooms may drop off in temp..
it is under the parameter room control, the options are none, ie following the outdoor temp only, modulating ie taking into consideration the room temp too, or thermostat, which shuts the boiller down at the target room temp, and then comes on when the room temo drops..
the forst two give the better heatong performance, the latter can only measure the temp in one place.. and other rooms may drop off in temp..
Thanks. So if you use "thermostat" then you have no weather compensation?
A
ALEC1
yo still have weather compensation but only when the room is not at temperature
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