Search results

Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Search results

  1. R

    BS 1212 Part 2 Air gap

    Hi Am unable to find a clear answer to this - But the water in the cistern with BS 1212 part 2 float valve what is the highest water category that it can be? Im thinking category 3 has in F and E tank not been able to find anything written in WRAS guidebook. Can anyone clarify this? Thanks!
  2. R

    W plan wiring using midposition valve

    Hi is it possible to wire up to work has a W plan using a mid position valve? If so any advise? Thanks
  3. R

    Wanted BPEC Books Especially on gas

    Hi all, I have been out the industry for a little bit but am getting back into it again. I was wondering if anyone had any BPEC books they can sell me, especially on gas but also on renewables etc. I know there are other make books out there but BPEC books for me are what i learn best from...
  4. R

    Pipe size going into expansion vessel on sealed heating system

    Hi all, Ever since I was an apprentice plumber going back 20 or so years when we installed sealed heating systems - We always made sure that 22mm pipe would go into the expansion vessel ie do away with the actual fittings that come with it which were 15 mm and put our own 22mm female to copper...
  5. R

    Sealed Heating System - Temperature relief valve?

    Hi all, Just wondering, I am upgrading a open vented heating system to a sealed system because they are having an loft conversion but are keeping the old potterton profile boiler for the time being. What I am wondering really is, back when i was a student we were told that the vent in the F...
  6. R

    Central heating f4 leak sealer

    Something else on my mind - We have been fixing leaks on sealed heating systems by using fernox f4 leak sealer, I was involved in an debate (friendly) that it might stop the leak temporarily but after about a year, or if the system gets emptied that the leak sealer what ever it does will not...
  7. R

    3 port valve faulty?

    Hi all, Am I unlucky or have I done something wrong, I installed a danfoss 3 port valve on a heating upgrade, but replaced it with a Honeywell one because when I switch on the hot water it was leaking through to the heating circuit. so with the new Honeywell valve , when heating is on by...
  8. R

    New EcoTec Plus Wiring

    Good evening all, Please dont shout at me regarding this questions I have spent hours trying to research it looking at previous posts and reading the manufacturers installation instructions etc but not really found the answer! In the past i have wired up my ecotec plus system boilers has...
  9. R

    Shattered ceramic discs on taps, what causes them?

    Evening all, Shattered ceramic discs on taps, what causes them? My apprentice had this in his tech cert exam, Im guessing excessive water pressure? Does anyone know? Many thanks!
  10. R

    3 Tee Rule on S Plan Plus

    Hi Advice needed, this is the pipe layout for a s plan plus system. Note the 3 tee rule has been broken ( The hot water should be the tee nearest on the return from boiler). In my case because of zoning the hot water return is furthest from the boiler. On my layout - looking at returns...
  11. R

    Wiring Centres Sizes?

    Hi Does anyone know if they do big wiring centres as opposed to small fiddly ones, reason being ive got to install a s plan plus plus, Im just fed up trying to cram the lid on with a million wires sticking out and trying to get them to fit in the cut out notches in the boxes. Thanks Reading...
  12. R

    The missing generation of plumbers.

    Hi, A few years ago I remember reading in the paper - about in the 90s there were hardly any trainee plumbers as everyone was going into IT. When I done my time from 93-97 there was only 6 students who gained the NVQ 2 and 2 who went onto do the NVQ 3 (RUTC college to be exact). The course...
  13. R

    zone valves on s plan

    Hi quick question - I notice honeywell do 2 types of 2 port zone valves normally open and normally closed Am i right in saying for a heating system the normally closed is the right one? Also when would a normally open one be used? Thanks!
  14. R

    Cant get my head around pressure drops on different meters.

    Hi can some one please give a simple explanation to why on existing installations - on E6 meters you are allowed 8mb drops and U6 you are allowed 4mb. I just dont get the logic - because if the e6 is a lot smaller meter with less gas in it and you are allowed more of a drop? Thanks
  15. R

    Gas supply interrupted

    Down my road the gas supply was interupted for extension work on the gas supply. We have been without gas for 2 days. Am i right in sayint that once the gas gets switched back on the company will have to do a soundness test to all the properties whos gas was interupted? thanks
  16. R

    BS1212 part 1

    Hi, I was reading on some old revision exam papers that that the only place permitted for a BS1212 part 1 valve is in a F and E tank? Is this a glitch, my understanding is part 1 valves are only allowed in a wc off a cws? Please can someone advise? Thanks
  17. R

    couple of questions have exams coming up

    Hi, I wonder if you can all please help me I have my gas exams coming up but would appreciate some clarification on a couple or four things! 1) when working our a gas rate on a boiler - do you compare it to the boiler input or output on the boilers plate/badge? 2) What is the tolorence in...
  18. R

    Boiler input and output?

    Good evening all, If I designed a heating system to work on a 20kw boiler - Would the boilers input or output be 20kw? Please can someone explain the meaining! Thanks
  19. R

    Honeywell bypass valve on suprima

    Hi, I have just been updating a heating system which previously had a gatevalve as a bypass with a honeywell automatic bypass - I cant seem to find any instructions anywhere for the suprima 50 - To set the valve it needs the minimum flow rate for the boiler? Can anyone help? The pump...
  20. R

    To vent coil - AAV or manual air vent?

    Hi - On a heating system some people install AAVs whilst some install manual air vents to vent the coil. What is the recommendation? Is this area more prone to air than radiators? Thanks
Back
Top