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Fair question, how long for your motor run/start capacitor to self-discharge after unpowering. I don't know. Perhaps a question for the electricians forum.

Cut the black flex and make a field splice with a couple of Wagos?

Fernco coupling rather than the brown socket.

Can they write Welsh, though? Building regs in the language of the principality must be a thing of beauty....

Shut off cold supply to cylinder and open a hot tap and leave overnight - what happens to system pressure? * Edit: check in your documentation for the commissioning procedure "first filling" that its ok to have inner cylinder at atmospheric pressure and outer tank pressurised.

Looks fine to me, unlikely to give future problems. I dislike transitioning from black imperial alkathene, always seems problematic, even using Philmac universal transition couplers.

Errr... From google-fu/AI (sorry!) Mains water in England is typically neutral to slightly alkaline, generally ranging between 6.5 and 9.5 to comply with regulations. Key details regarding pH levels: Regulations: The Drinking Water Inspectorate sets the acceptable range at 6.5–9.5...

Fair point. I'm still a bit dubious of this lead-free end feed malarky myself.

Lifting the lid of the nearest downstream inspection chamber should give a good indication of route and depth of drain.

Tend to agree. Prone to calcifying in hard water areas, and the kilowattage vs flow rate deternines the temperature rise. Ok in some situations, I suppose.

These are very good fixings IMO. The plastic bush enables a solid fix without risk of damage to the ceramic.

It's a quarter turn valve, not one you screw down.

1 The PE pipe and sleeve do not belong you, they are the responsibilty of the gas transporter, up to and including the meter. 2 Turning off at the control valve next to the meter would achieve nothing,

You reduce the risk of cross-threading by using less at the beginning of the thread. After that it's down to eye and feel!

Sounds like a good enough plan. Clean and dry before applying silicone.

Fit them "dry" first to get a feel of how much play is there and then build up the PTFE to suit, adding more thickness as you go down the threads. May need quite a bit as both threads are parallel, not tapered. Personally I prefer loctite thread for this.

Yes Get it checked asap.

Your query is clear and well articulated. Why not send it to [email protected]

Immediately!

+1 The presence of the black wire to terminal 3 , not linked to L , suggests volt free.