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Every time the softener has regenerated air/gas is present in the cold water supply to the taps. The nearest is the cloakroom which is adjacent. The 15mm pipe is the first tee off, vertically for about 150mm from the 22mm horizontal softener outlet pipe. This 15mm pipe then bends 90deg thro...

We had the Monarch Midi installed 3yrs ago. It was supplied with a kit to test the hardness off water ie add drops off green liquid to untreated water until changed colour. Look at table for drops added to setting required on softener.

System comprises, Ecotec plus 637, VRC470, VR65, VR10 Megaflo unvented. I have just installed the VRC470 in my control system and all seems to work ok. I have one question regarding the DHW timing settings on the VRC470. There are two selections, one is Preparation the other is...

The programmer I took out was the ST9400C, the VRC 470 was installed in place of the room thermostat, utilised existing wiring. VRC470 much more versatile for control and looks smart too.

I've just fitted the Vaillant VRC470/VR65/VR10/Outside thermister in place of Honeywell timer/programmer and its simple to set up end use and rads often just warm as system just tops up enough heat to maintain temps. Hot water easy to boost if you get caught out with programmer timing and...

Should cable be heat resisting spec?

I'm installing the VR65, VR10 and VRC470 and outside thermistor in place of Honeywell programmer and room stat. Is it ok to run ebus signal in the existing 5core with the 230vac supply to the boiler or should I segregate into two separate cables and should cable to boiler be heat resisting...

Well I think this will be ok http://www.batt.co.uk/products/view/547/318TRS-Rubber-Cable-300/500V-to-BS6500-H05RR-F and it's 7.1mm O/D. Had a look at the HiTuf too but O/D is 11.5mm so too big for the gland and don't want to gland on inner sheath. I'll paint it to match house.

Hi all, First post in this section of forum. I'm installing a Vaillant outside temperature sensor which will be wired back to the boiler in the loft and would like advice on cable type/installation. The cable run will be about 2metres vertically to the eaves from the bottom entry sensor...

Hi all, I'm installing a Vaillant outside temperature sensor which will be wired back to the boiler in the loft. The cable needs to run from the sensor which will be mounted on a NW facing wall, which is 8ft from adjacent property wall. The cable run will be about 2metres up to the...

You need to survey the whole system from a piping and wiring aspect. One sketch for the piping and one for the wiring clearly marking up all the items of equipment, relative locations ie ground or first floor, size of pipes, location of connection points to help with flow and return idents...

Slow system - double clicked!

What fittings would I need to adapt from 32 pushfit polypropylene pipe to 40 MuPVC solvent weld pipe and using only these materials?

These old double panel rads are part of my system, the remainder are convectors. Does anyone have an estimate for the outouts for them as want to include in total kW rads load. Should I replace them with moderm convectors as boiler is Vaillant 637 and I want to upgrade to modern vaillant WC...

"The cylinder has a 25yr transferable on site service support guarantee against faulty manufacture or materials provided it has been correctly installed as per the the instructions in the instruction manual and all relevant codes of practice and regulations in force at time of installation."...

So would adding the VR10 to the dry pocket which still has the two capiliaries for the stats and which are still wired to trip the valve invalidate G3 approval?

I just spoke to builder who is also the plumber. He has just had ACL surgery to knee ligament. so out of commission for a while. I'm going to speak with BCO later to check out their take on this and also see whether this install has it's own certificate issued by them as it was part of a...

My interpretation of the Megaflo installation manual based on building regs G3, Hot stored water and where my installation doesn't comply. 1. There should be a vertical pipe drop of 300mm min below tundish before a change in direction eg. an elbow. 2. The pipe material should be copper sized...

Ok been and taken more pics. Had a look at megaflo installation guide p13 etc. Where does the D2 nor conform? If there are hard facts I will get builder back to repipe as required to G3 and guidance section 3.9. view below boilerpipe from boiler

The pump is located and wired within the boiler. I realised there would be no overrun, same as a power failure I suppose. The overheat trip is at about 90-95C on the megaflo, I believe, which would mean something pretty serious is occurring so what action to take, shut the valve or stop the...