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  1. A

    Indirect Unvented cylinder, Combi Boiler and Nest Thermostat

    The cylinder will only heat up at the time in the instructions in ideal conditions. Unlikely in real world situations. Time the hot water to be on without the heating so it's coil gets the boilers full output and it won't take too long. Have the heating on and it will get a share of the boilers...
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    Recommendations for wall scanner?

    Bosch or Milwaukee sub scanner
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    sealed heating system air lock problem

    AAV 's are for next to pumps. Either manual vent if possible or nowt. It should work ok if you get a good flow to the rad.
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    Boiler plus what you doing ?

    I will be offering the manufacturers own wireless control as an option to meet requirements. Will only offer weather comp to young customers with newish houses customers think it's crazy to pay more money for very small saving that will possibly take the life of the boiler to recoup. Or even...
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    Flue termination distances

    Haha. Even more important he/she reads manufacturers instructions then. Had a customer have there fire at risked cus a meter fitter though the coals on the fire didn't look positioned very well. The customer had the instructions but it was just at risked because. Inexperience and pressure of...
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    110mm Solvent weld & push fit Pipe the same?

    Almost all 110mm above ground can be glued and pushfit as its a type of upvc, abs which alot of small bore waste pipe is made from can't be used outside as its not uv resistant. Makes you wonder why almost all brands use abs over pvc. You can get pvc waste if you look for it, hunter is one...
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    Best van to get on the market??

    The vw transporter is a great van to live with. Caddy is also nice for a small van. You will need to spend £1000 plus on security if you plan on keeping the van for a while. Maybe a little more if you get a newish ford / custom. You will want dead locks, maybe 2plus for side and back doors to...
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    Naughty Naughty Naughty

    dont see many bent tap connectors, cost more than a st elbow and nut and olive. did it have the barrier between the top draw and hob underside? the number of kitchen fitters that hate me when i insist on the barrier being fitted is getting quite high.
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    deburring gas pipes?

    deburring is ideal, in reallity it dont get done alot of the time. on gas if the pipesizing is on the limit its def very important.
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    vertical wall chase for gas pipe installation

    whats a perk joint? hollow blocks cant be chased.
  11. A

    what percentage of fitters own a powerflush machine

    if open vent then power flush is normally what i suggest. sealed i tend to mains flush each rad at a time, unless the old boiler had corrosion issues. magnetic filter on every install bar new system which is then an added option. dont believe in magnacleanse alone, need high flow rates, reverse...
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    Flue termination distances

    first ask yourself if there is signs of heat damage etc..... then check the manufacturers istallation instructions for the boiler. You will have these anyway if your servicing the appliance. clearances to opening are different of course. Ask those you have trained with and you can also phone...
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    Combi boilers pressure relief height from floor

    if the boilers instructions give guidence then follow it, many allow you to simply terminate back towards the wall in a safe poisition (not over a door or window) if the boilers instructions dont offer any advice then follow the regs for discharge pipework for unvented hot water. Ideal even give...
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    Consistent BTU calculations

    Maybe, but I'd prefere the British thermal watt and keep it metric.
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    Does pipe direction on system matter

    Ask the manufacturer, they did the design and engineering of the product. Probably a few reasons like position of stats, overheat, thermal shock etc....
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    Plumber or Electrician - Newly fitted valve faulty

    He should have tested it before he left, if something else has failed then it's still s plumbers job not a sparks. If he's willing to change motorised valves he should be at least competent to test/ fault find on the controls as well otherwise how would he know the valve was faulty in the first...
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    Consistent BTU calculations

    City plumbing heat loss calculator works well enough for most jobs. On very cold rooms add 20% Still don't understand why any manufacturers use btu's anymore. Went out 20 years ago. Stick to watts.
  18. A

    Underfloor heating in new build ... does it comply with regulations?

    Time and temp required on towel rads on separate zone normally otherwise only on in winter when heating on.
  19. A

    Dry pressure testers

    I would release pressure from another point other than the valve. Yes it will leak if your foot pump attachment has a poor seal.
  20. A

    Pipes behind dot & dab??

    For copper I use stitched hair felt mostly. Taped sometimes and for gas. Only use plastic for 10mm rad drops, this I use trace tape on nhbc builds. Obviously keep pipes straight. Fully encase gas.

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