Thursday 16 June 2022

Drayton Wiser OpenTherm of Baxi 600 combi boiler - Does it Work?! Hot water UPDATE!!

 I'm writing this because it was very difficult to find anything concrete about whether boilers were fully compatable with Drayton's implementation of OpenTherm.

There were many posts, with some replies from people who where guessing, that there were problems with Draytons implementation of OpenTherm. Other threads stopped abruptly when it appeared the author had solved the problem... without any details of what had happened.

I have been using the Wiser system with a Worcestor Bosch combi using relay control and it has been good. It may only be a one bedroom flat but its an old rambling building and I currently have 4 Wiser Radiator thermostats and two room thermostats. Finally the flat is a fairly consistent temperature.

I have had problems with the Drayton Wiser Hub. The system kept on being unavailable. This was finally solved using a £12 wifi extender from Argos. Even though the wifi signal was at about a half according to the diagnostics on the app, it obviously wasn't working properly. It didn't just not work, very weird things happened when trying to get it to work. After the wifi extender, which is sited quite near it, I have had no problems at all. Coverage to all the peripheral has been pretty good with one living room radiator thermostat dropping out occasionally. Then it reconnects again.

I was having the boiler moved and decided to replace the aging Worcester with a Baxi 624 combi which, a message board suggested, should work with Drayton's OpenTherm. There were reports that there were  problems with domestic hot water (DHW) as the Baxi expects DHW temperature messages and the Wiser does not supply them. By the law of OpenTherm you do not need to send them, but the Baxi controllers do so it expects them.

The proliferation of 3rd party controllers for boilers has meant people like me tinkering with heating systems which they would never have been interested in before. It also means that people are asking Boiler Installers to install boilers with controllers where there is no proof they will be compatible. I have a deal with my installer that we will go back to relay closure if the opentherm proves problematic.

When using opentherm the controller takes over the workings of the boiler, so there is lots of scope for things going wrong.

My installer has done a sterling job of moving the boiler, which has included running pipes in a difficult route. The controller has been resited in the centre of the flat and the opentherm cable run to the boiler is just under 20 metres.

So the first thing I found was that once a Wise Hub has connected as OpenTherm, you are stuck with it. If OpenTherm is disconnected you can not then control the boiler using the relay. Apparently there used to be a selection and a status for type of connection in the App but they are no longer there. I put an inline switch in the opentherm cable so I could disconnect OpenTherm at will.

With it all up an running the hot water seems to be running at 60 degrees. If you turn the hot water knob on the boiler the value appears but you can not change it. The control has been over-ridden by OpenTherm. Sadly, as the Wiser does not send hot water temperature information you are stuck with 60 degrees. I did try powering up the boiler with OpenTherm disconnected, changing the tempurature to 40, and then connecting the opentherm. It immediately goes back to 60. 60 - 65 is recommended by Baxi to stop things growing in the pipes.

So there you go. There are two possible ways of adding control to the hotwater. One is to enter the world of Jiří Praus and his OpenTherm gateway Arduino Shield. You may need a degree in computer science and then you can insert the hotwater messages into the Wiser opentherm data stream. The device is here https://www.tindie.com/products/jiripraus/opentherm-gateway-arduino-shield/ 

The second possible way comes from a post I saw saying it has been known to work to add a two way switch in the OpenTherm cable and switch to a thermostat that can control domestic hot water. I found one, the EPH CP4M but have not tried it. 

Finally, really it would be good if Drayton could add the DHW functionallity to the Wiser, also some indication that the Wiser hub was connected as OpenTherm and a way to switch it back to relay would be useful.

I will update this when I've had it going a while. It's June and the heating isn't really on.

UPDATE

I bought the EPH thermostat and replaced my OpenTherm switch with phono plugs so I could unplug the Drayton and plug in the EPH instead. And it works! I now have DHW at 45 degrees! much more civilised.



Update Update 22/10/22

Still occasional schedules appearing from no where. One person commented this seemed to happen if the controller disconnected from wifi. Have not tested it.

Radiators can be quite noisey with rushing sound, especially if only one radiator being heated. One forum recommended opening all lock valves and that seems to have improved things.


Friday 10 June 2022

Busgate victory at Malborough Place, Brighton - What you need to know

 I was fined, in feb 22, for traversing a 'Busgate' at Malborough Place in Brighton. I was delivering exhibits for an exhibition at ONCA Gallery which is in St Georges Place. I walked the route beforehand as I knew there where cameras there and decided that there was no other choice but to go through what I thought was a buslane going on from that junction. I was picked up by the camera, fined, appealed, rejected and then went to tribunal where I was successful. After my transgression I found there is a route you can take via Church Street, Tchbourne St and North Road, but my defence was it was unreasonable to expect someone to know that as the signage was misleading.The adjudicator's summary is over 2500 words long, and it's not cut and paste, he made a thorough and detailed analysis of the traffic set up there and my reasons for what I did. I would like to thank him for his attention to detail and his thoroughness. 

I will not go into the detail of Busgates here as I expect anyone who has found this page will already be acquainted with them. But if you have been fined while trying to deliver to either Gloucester Place or St Georges Place you maybe able to offer this verdict to challenge it. As the Adjudicator says, his decision applies to a particular set of circumstances.

You can read about Brighton's Busgates here. https://www.brighton-hove.gov.uk/parking-and-travel/bus-gates

I would like to say to Brighton and Hove Council how ludicrous I think it is to reroute traffic from a main road through a popular tourist area, the North Laines. I would also like to suggest they take up suggestions I made at the tribunal for signage including this at the junction of Malborough Place and Church Street. 

 

Here is the text of the Adjudicator summary for Tribunal number BH00284-2205

Adjudicator's reasons


1.        I have decided this appeal without a hearing. The parties did not ask for a hearing.

2.        The Council have produced footage, from a camera device approved for bus lane enforcement, which shows that Mr Weedy’s car was driven in this bus lane on this occasion. Indeed, Mr Weedy acknowledges that he drove his car in this bus lane

3.        The bus lane comprises a short section of the northbound carriageway of Marlborough Place at its junction with North Road.  The bus lane is the 4.3 metres of the northbound carriageway northwards from a point 6.5 metres north of the southern kerbline of North Road. It is reserved for buses, hackney carriages, private hire vehicles and pedal cycles at all times. A bus lane of this sort, which is a short section of bus only street, is referred to by the Department for Transport as a bus gate (and there is now a “Bus Gate” road marking prescribed in the Traffic Signs Regulations and General Directions 2016 (TSRGD) for use as part of the signage for this sort of bus lane).

4.        The practical effect of the restriction is to prohibit non-authorised vehicles from entering Gloucester Place, which is the continuation of Marlborough Place beyond its junction with North Road, from Marlborough Place. Other vehicles driving northbound on Marlborough Place must turn right immediately before the bus lane into the continuation of Marlborough Place at its junction with North Road. Gloucester Place is accessible from its southern end, but only from North Road (see the Council’s map at evidence 13). Evidently, the length of the northbound carriageway of Marlborough Place which is the bus lane does not extend so far north as to affect traffic turning left out of North Road (the side road to the left where Marlborough Place leads into Gloucester Place) into Gloucester Place.

5.        Mr Weedy explains that on this occasion he was heading to a loading bay outside the ONCA Gallery on St George’s Place in order to unload items for an exhibition he was installing there (St George’s Place is the continuation of Gloucester Place north of the junction with Gloucester Street). He had walked the route a few days before to make sure that there was no alternative route because that route appeared to be for buses and taxis only. On doing so, the signage convinced him that both Gloucester Place and St George’s Place were for buses and taxis only. As a result, he concluded that he had no choice but to use the route he took on this occasion for loading purposes.

6.        Mr Weedy notes the route he should have taken is as shown on the map at evidence 13, which the Council supplied him in the notice of rejection (that is left from North Road onto Gloucester Place and then onto St George’s Place, neither of which is, in fact, a bus lane northbound). However, he says this route can only be known if you download that specific map from the Council’s website or are a very seasoned driver in Brighton. In particular, he argues that the signage on the route he took implies that Gloucester Place and beyond is a bus lane, so that there did not appear to him to be a route from North Road to the loading bay in St George’s Place. He explains this is why he concluded that, although the road system leading to the loading bay was for buses and taxis only, it may be used to access the loading bay which could not be accessed in any other way.

7.        This is, therefore, an unusual case because Mr Weedy candidly admits that the signage he saw clearly indicated to him that the route he took into Gloucester Place was for buses and taxis only.  Having considered the Council’s evidence I agree that this is so, save that the signage indicates the route is reserved for buses, taxis and cycles at all times. I note Mr Weedy suggests a “Bus Lane” marking should be used for this restriction, but the “Bus Gate” road marking actually used is prescribed in TSRGD and recommended for use for a bus lane of the sort in Marlborough Place by the Department for Transport in the Traffic Signs Manual. In addition, the blue and white upright sign at the start of the bus gate is illustrated and its meaning explained in the Highway Code and Know Your Traffic Signs, so drivers should be familiar with it.  

8.        Furthermore, it is evident that, contrary to what Mr Weedy thought at the time, there is a route to St George’s Place without going through the bus lane.

9.        Nonetheless, Mr Weedy’s case is that the signage created the misleading impression that the route which was subject to this restriction was Gloucester Place northbound from the junction with North Road (rather than just a short section of Marlborough Place before the start of Gloucester Place). He argues, in essence, that as a result it was reasonable for him to conclude that there was no route, even from North Road, which did not entail driving in a bus lane to get to the loading bay in St George’s Place, so that by implication using the bus lane must be permitted to access that loading bay.

10.        Mr Weedy has been consistent in his evidence that the purpose of his journey was to unload items at ONCA Gallery on St George’s Place.  He has provided an email from the gallery’s curator confirming this. I have established from Google Maps and Street View that the gallery is on St George’s Place and that there is a loading bay outside it. I accept, therefore, that the purpose of his journey was to get to that loading bay to unload his vehicle.

11.        It is also evident from the Council’s map that the only permissible way for general traffic to access St George’s Place, and so the loading bay Mr Weedy was heading for, is by turning left from North Road into Gloucester Place and then driving northbound along that road and into St George’s Place. The Council’s map indicates that general traffic cannot access the northern end of St George’s Place. The Council’s evidence indicates that this is because a short section of the southbound carriageway of St George’s Place at its northern end is also reserved for buses, hackney carriages and private hire vehicles only (this is the same restriction as applies to the northern end of the northbound carriageway of Marlborough Place). The map also indicates that there is no other route to St George’s Place (and I have confirmed from Google Maps that this is right because Gloucester Street, the side road shown on that map at the point Gloucester Place leads into St Georges Place is a one way road in which traffic can only head away from the junction of those two roads).

12.        As a matter of fact, therefore, the loading bay on St George’s Place outside the ONCA gallery is sandwiched between two bus lanes: one at the very end of the southbound carriageway of St George’s Place and one very close to the end of the northbound carriageway of Marlborough Place. Whilst as a matter of fact general traffic can avoid the latter bus lane by turning onto Gloucester Place from North Road, I accept Mr Weedy’s point that there is a sign which creates the misleading impression that the northbound carriageway of Gloucester Place is a bus lane reserved for buses, taxis and cycles at all times.

13.        The particular sign which creates this impression is the direction sign in Marlborough Place which gives advance warning that northbound traffic approaching the junction with North Road has a bus lane ahead of it. This is a map-based sign which shows the crossroads ahead (North Road is to the left, the continuation of Marlborough Place to the right and Gloucester Place is straight ahead). The sign incorporates the sign indicating a route reserved for buses, taxis and cycles only into the map. That sign is embedded in the route straight ahead after the crossroads. This serves to inform the road user that he is approaching a bus lane ahead. It is obviously intended as advance warning of the bus lane which is, in fact, close to the northern end of Marlborough Place. Crucially, however, because the sign for the bus lane is embedded into the route beyond the junction the effect is that, as Mr Weedy says, the direction sign creates the misleading impression that it is the road straight ahead beyond the crossroads (Gloucester Place) which is a bus lane at all times and that the restriction begins after the junction.

14.        The upright sign for the start of the bus lane is on a traffic island sited in the crossroads at the centre of the exit from North Road. This sign is sited prior to the lane for traffic turning left out of North Road onto Gloucester Place. From the perspective of a person approaching that sign from Marlborough Place, as Mr Weedy evidently did when he walked the route prior to driving it, it would appear that traffic turning left from North Road, which does so beyond that upright sign, enters the road to which the restriction indicated by that upright sign applied. The restriction is actually very short and so does not apply to traffic turning left from North Road, but the length of the restriction is not indicated by any signage in Marlborough Place. The upright sign at the start of the bus lane does not appear, therefore, to be inconsistent with the direction sign in advance of it which gives the impression, for the reason explained above, that access to Gloucester Place northbound from any direction (including North Road) is limited to buses, taxis and cycles only because it is the northbound carriageway of Gloucester Place which is subject to the bus lane restriction.

15.        This gives rise to the impression that the only way to access the loading bay, which is clearly intended to be accessible by vehicles generally otherwise it would not be there, from the south is via the bus lane which appears to be in Gloucester Street. It is not clear if, when Mr Weedy did his walk through of the area, he explored the possibility of accessing the loading bay from the northern end of St George’s Place. He has not made reference to signage on that route, which suggests he did not. He clearly ought to have done as it is a possible route to St George's Place (and the signage he refers to only indicates the northbound route to that road is a bus lane). Nevertheless, even had he done so it would not have taken matters any further forward because the Council’s evidence indicated he would have encountered bus lane signage indicating that only buses, taxis and cycles could enter the northern end of St George’s Place. Consequently, he would still have been left with the impression that the only way to access the loading bay in St George’s Place was via a bus lane which was signed as reserved for buses, taxis and cycles only (in which case the route he took was the obvious route because it would not involve a U turn to access the loading bay).  This is, of course, why Mr Weedy concluded that he must be permitted to use the bus lane which he drove through on this occasion to access the loading bay, notwithstanding that the signage indicates that it is reserved for buses, taxis and cycles only

16.         The only signage which could arguably have indicated to Mr Weedy on his walk through that North Road was the appropriate route is a road marking in North Road just before the crossroads (apparent in Street View images of the crossroads from August 2021) which indicates that local traffic may turn left into Gloucester Place. There is not an equivalent marking for traffic going straight on from Marlborough Place into Gloucester Place and the road marking for such traffic actually directs “Other traffic” to turn right. Nevertheless, Mr Weedy has produced evidence that there is a road marking at the southern entrance to Marlborough Place which indicates that it is a route for buses, taxis and access only. I am just persuaded, therefore, that it was reasonable for Mr Weedy to assume on his walk through, because the direction sign creates the impression that the bus lane restriction is in Gloucester Place and that traffic turning left from North Road was also using the bus lane, that vehicles were permitted to use the bus lane to access the loading bay in St George’s Place. In short because the signage creates the impression that all routes to that loading bay from both south and north involved going through a bus lane reserved for buses, taxis and cycles only, it was reasonable to assume that it was nonetheless permitted to enter the bus lane Mr Weedy drove through on this occasion for the specific purpose of accessing that loading bay. The distinction between the route to the loading bay from the south via North Road, which is permissible, and the route from the south via Marlborough Place, which is not, is not sufficiently clear from the signage because the direction sign in Marlborough Place is misleading as to the location of the bus lane and suggests it is on both of these routes.

17.        For these reasons, I find that it was reasonable of Mr Weedy to assume that, notwithstanding the signage he passed indicated that the route was reserved for buses, taxis and cycles only, that it was permissible to use that route to access the loading bay. For the reasons explained it was a reasonable assumption that it was necessary to do so in order to access a loading bay which is obviously intended to be accessible to general traffic. He would have no reason to check the Council’s website for the map since provided by the Council. He could expect the signage to adequately inform him of the restriction.

18.        This is a case, therefore, where I find that the signage is generally adequate to inform the road user of the bus lane restriction which Mr Weedy contravened in this case, but on the specific facts of this case it was not adequate to do so. The distinguishing fact in this case is that Mr Weedy was driving to a loading bay in St George’s Place and, for the reasons explained, he had reasonable grounds for concluding the bus lane was the only route by which he could do so. On this occasion, therefore, I find that Mr Weedy was not adequately informed about the nature of the restriction, in particular where it was, and so the restriction is not enforceable against him on this occasion.

19.        I allow Mr Weedy’s appeal on the ground that the alleged contravention did not occur. Mr Weedy has nothing to pay. He is, however, now aware of the bus lane and that should he need to access Gloucester Place or St George’s Place in the future he must do so via North Road.