dpmiller

SSRs are also available with mains control, if you require, Nick.

or sprung contacts built into the frame, like some car tailgates or Keylite roof windows?

you do use chain oil Dave?

A self-cutting adaptor on the vertical section above the trap? BES 6957 or similar...

but if the expansion vessel has failed, system pressure will alter radically with temperature. Well worth checking the air pressure in the bladder. /that's the tyre valve at the end of the tank.

you're looking at system pressure, not the pressure in the vessel. Perhaps the bladder has failed in the vessel...

agree with Nick. I've seen autoclaves discharging steam from 121+ degrees into bog-standard waste pipe. A couple of minutes is fine, but then energy of a continued discharge is very different to a small volume for a short time.

no reason why not, as long as you go for one with a wireless current sender.

we'll never be able to tell you if you paid too much if we don't know how much you paid... 4k? 8k? more?

these guys are worth a chat, they re-sell the L&C unit and have an optional paid extended warranty package https://www.peakenergyproducts.co.uk/monobloc-ashp-s Andrew is the contact.

It's unlikely that anyone would forget to advertise a unit as being inverter... Cool energy do some BIG boiler-replacement inverters, and told me they have no intention of offering smaller units as inverter. But low starting currents and a range of outputs (eg Cool Energy's 6-18.7), would be a hint.

you might need to give us some numbers- could it be you received the Solaredge unit and optimisers in lieu of a Victron hybrid inverter?

what is where the rectangle shows? Existing shed? as they're running a mahoosive 3-ph cable to that point...

What is the air diffuser like? Is it just a perforated tube? Our Solido Smart has a double-wall diffuser, the outer is a perforated silicone material which balloons out slightly when pressure is applied, allegedly making it self-cleaning...

A quote is not an invoice...

500W panels are very non-standard. Guessing this is a fancy branded odd-sized panel too? 270-300W panels are like £100 ea...

so I've never really been able to work out, what's the difference between these Evo saws and a bog-standard sliding chop?

Available flow rate wrt restriction @ different fan speed settings.

behind plasterboard would it need any?..

what temperature of Sunamp, and what is the COP of the ASHP at that temperature?

Libel is a defamatory unjust statement? Can't see that here. How is anyone's reputation hurt? [shrugs]

nothing halogen for sure... how temporary? portable or fixed?

our TF Co. used a combination of Express anchors and Hilti nails.

Cill for ornaments? Lighting recess?

Sounds like the hot water circuit might be gravity, how many pipes go to the multifuel? Or is the system "pumping over", with the pump forcing water out of the vent pipe and back into the F&E tank? Are there any other pumps, like beside the oil boiler? You might try as a first go, closing the valves on the hot radiators to force the flow to the others. Once you've flow to all than you can worry about balance...