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questions

  1. M

    Few combustion questions ?

    I'm really stuck, searched google and looked throughout the corgi book 1. What level of CO2 in a room could critically affect combustion of a gas-fired asppliance a - 100ppm b - 300ppm c - 1000ppm (My answer) d - 15000ppm 2.CO can migrate in which of the following ways a - upward via a...
  2. J

    Hotel heating questions..

    Have been working in a hotel (27 rooms with ensuites) changing staff toilets and adding a radiator and would like to have more of an understanding of some of the bits in the plant room. The plant room has 4 boilers (potterton osprey 2) with 5 heating zones and the older bigger grundfos pump in...
  3. A

    Couple of Questions for Installers

    I'm repair engineer and I've never really done any full installation work before. I need to put a full central heating system in my dad's house he's buying. Currently there's just a gas meter and electric heaters, so it really is a blank canvass! My dad wants the gas pipe running in the wall...
  4. cr0ft

    Drainage Questions - Advice Needed Please.

    Hi all, After some advice on a drainage job I am starting tomorrow. Done an inspection of the existing drains today and at the mini inspection chamber (300mm) at the head of the drain the top of the underground PVC pipe is 0.2m or so below the surface. We are replacing the old mini inspection...
  5. J

    New CH install - couple of questions - newbie

    Hello - We recently had a recommended Heating engineer install a brand new CH system with a Worcester Bosch Greenstar 1.8i boiler configured as a system boiler and 16 rads, with TRV's and room stat. There are a couple of things he didn't complete to my satisfaction but I appreciate some...
    • jrcsheffield
    • Thread
    • install questions
    • Replies: 24
    • Forum: UK Plumbers Forums
  6. K

    Part L questions

    hey guys. ive posted this up in the arms as not to show the public how clueless some of us are.... i have an office to install a boiler + central heating to it now i know its classed differently to a house hold but i cant make head nor tail of part L in relation to it !! ive just used...
  7. A

    Ordering parts for tomorrows job. got a couple of questions, help appreciated

    Hi guys i'm doing a job tomorrow for a guy who is having his done up before he moves in. The job is run pipes under floor in ensuite for shower, basin, toilet and towel rail. All in plastic/push fit. The floor is mostly up for what i need to do and the walls just have plaster board on so I...
  8. P

    CH Pumps - stupid questions (?)

    Possible stupid newbie question coming up! Q1. I've always wondered... WHY do Central Heating Pumps have such huge couplings on them? I doubt many homes use pipes bigger than 22mm - but the couplings on all the pumps I've ever seen have about 40mm threads. My guess is so you can change the...
  9. J

    Two questions

    X800, how long can you leave it a sealed system ? Can it be used in conjunction with a mangnacleanse when flushing ? am fitting a potterton heatmax, what's the script if you fit a programable salus rs ? Will it void the guarantee ? cheers
  10. J

    outside tap questions

    Hi all, I'm due to fit an outside tap for a customer. First time I've done it. I know all the theory, but have a few puzzlements... 1. I'm planning to sleeve the 15mm pipe, with 22mm copper pipe (or maybe plastic overflow pipe, which is cheaper). What do you recommend I seal the pipes in with...
  11. H

    General questions about Vaillant eco tec 24: energy saving tips,adjusting pressure

    Hi all I want to keep my bills down. Hardly ever use central heating. The installers set my hot water temp to around 53 degrees and the radiator heat to 60. Would it save money if i reduced it from 60 to 50 or even 40? (once i figure out how!) Also, if say the rad heat is set to 60 degrees and...
    • homeowner
    • Thread
    • pressure questions vaillant
    • Replies: 2
    • Forum: UK Plumbers Forums
  12. C

    Multifuel CH pipe questions

    Hi All. New to the forum and would appreciate some help. I’m in Spain, Costa Blanca doing odd jobs etc including afair bit of basic plumbing (new mains water pipes, PRV’s, toilets, gardenirrigation etc.) So not an expert by any means but fairly comfortable with thebasics. At home I have wood...
  13. B

    novembers mandatory questions for gsr,s

    wishing access in this forum how many of you know the answer to question 2? what does tb016 relate to,and how many spillage tests would you carry out on a OF appliance if a extractor fan was fitted in a adjacent kitchen with intercommunicating doors between kitchen and appliance location
  14. A

    Mystery Shower Valve and other questions!

    Hi All, I've moved into a new place and I'm having some trouble with the thermostatic shower, which is warm at best, despite a piping hot inlet. I've taken it to bits, given it a descale with some vinegar and lubricated the seals. This did the trick for 10 mins or so, but it then went back to...
  15. R

    Tax questions

    Friends I have some tax questions that you may or may not know! Here goes:- 1). I believe you can carry a loss forward to the next year. Any comments? 2). After being employed and now self employed, if someone makes a loss can they claim against their previous years income tax for a rebate...
  16. 0

    Domestic Gas Questions.

    Hi everyone, I'm looking at heading in the direction of gas, I've completed an NVQ3 but didn't do the ACS part (Lazy by me i know!). I think i got comfortable with the company i was with (mechanical company mainly pipe fitting), so didn't really look into getting it. Now though I'm reevaluating...
  17. N

    water heater questions

    I have discovered (with horror) that the electric water heater (immersion) in the cupboard in the bathroom does not have the top (you could touch the hot water there). Should it be covered or is it normal for ca 50 cm diameter to be totally exposed? Could it be the reason of condensation (on the...
    • NL2013
    • Thread
    • heater questions water
    • Replies: 10
    • Forum: Bathroom Advice
  18. F

    First boiler install questions !!

    Hi all, just a quick question from a novice! I started to do my first bit of pipe work on a veissman 26kw heat only boiler the other day, aswel as coreing the flu out and installing flu, with a little help from my mentor I may add. I piped up the flow and return, which come off the top of the...
    • Foster777
    • Thread
    • boiler install questions
    • Replies: 23
    • Forum: Boiler Advice Forum
  19. B

    Combi boiler flue questions

    Hello I am trying to replace my current gas boiler (Potterton) with a combi one (Worcester). Boiler is located in the middle of the flat on the upper floor. Two companies specializing in Worcester had a look and they both suggested to make a strictly vertical flue and for that they would need...
    • borka
    • Thread
    • boiler combi combi boiler flue questions
    • Replies: 5
    • Forum: Boiler Advice Forum
  20. O

    Unvented questions

    Working on a club has no hot water for past few months manager had me look in the back. Go into the celler is a really old system boiler and a unmarked unvented cylinder in the celler which is like 9oc all day and night other than it being a stupid place if its lagged properly and pipework...

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