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Hi All, Quick question - Our builder was left to spec and order some flat fixed rooflights this is what was fitted. I’ve never seen a design that just sits on top of the upstand, rather than go over it to avoid water ingress (which I believe is the norm)? This design would appear to rely...

Hi All, Need to run some lighting cable in a yard for wall lights. Do the internal protected zones apply to external cable routes also? The cable will be getting rendered over, so mechanical protection-wise will chasing a channel and metal capping suffice, or is there a preferred alternative...

Hi, Busy researching Esbe actuators in a domestic setting and see there are a number of running times (open to closed?) according to model, ranging from 30s to 4 mins. In a typical domestic sealed CH system would one speed be preferable over another? - I assume you'd just end up with a...

Hi, When a zone valve opens and the aux switch calls for the pump to start, is there a delay after which the pump starts circulating or should it start immediately? thanks

Hi All, I've been trying to find a Vaillant (modulating) schematic for a sealed system boiler that details 1 unmixed radiator, 1 mixed UFH, and DHW but have come up short, so I have created a hybrid schematic (ignore the numbering) on which I'd would welcome your thoughts as to whether it would...

Hi All, I've been trying to find a Vaillant schematic for a sealed system boiler that depicts 1 unmixed radiator, 1 mixed UFH, and DHW but have come up short, so I have created a hybrid schematic on which I'd would welcome your thoughts as to whether it would work. I'd be looking at using new...

Evening, Regarding zone valves and end switches - what does the 'PL' bit of PL 230 v on the drawing mean? It appears to be the supply for the switch on the zone valve, so is it 'permanent live' ? And from where should it be sourced as a best practise? cheers

Calling all VR71 owners! What voltage is present at the external demand input S6/S7/S8 terminals on the VR71? I'd like to add a 3rd party UFH system which uses these terminals to call for heat, so want to make sure that by connecting a UFH wiring centre which has a volt-free output, that this...

Hey All, I have a Vaillant main CH system running control via eBus at 24v - my builder has provided a 240v control UFH system, and I can't think of a way to connect this into the main CH system. Do I have any options to make this work apart from returning the 240v UFH controls and getting 24v...

Hi folks, We're extending the house at present and I'd like to extend my current Vaillant home solution to accommodate 2 new UFH zones into the Vaillant system. The house is currently a basic 1 CH zone with manual TRVs and 1 DHW zone connected as S-plan. At present the following central...

I'd like to fill the tap holes in our cast iron bath but not sure if it's possible? My first thoughts were welding fillers in then re-enamelling the batch, but then thought about the liquid metal stuff I've used in the past instead of welding. Any thoughts on what the best thing to do might be...