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  1. M

    Generators and Lighting

    Can anyone give me some advice? I have been tasked with sorting the lighting for my sons school PTA firework display. In the past another father supplied the lighting but seeing as his son left the school 4 years ago we think that we may be asking one favour too many. We propose to run...
  2. M

    How to achieve 20 degrees C drop between flow and return?

    I agree with corgiman..... don't worry about it......! But I have always thought (don't worry... no sleepless nights) that this fact means that I a new condensing boiler is never going to achieve the +90% efficiency that the manufacturer claims. Unless, as corgiman says, you replace...
  3. M

    BG day -any hints (useful)

    I did this test.... Lots of pictures of flues to categorise NTCS/AR etc. Lots of multi choice papers similar to ACS papers. Electrics - checking earth cont. short circuit test, resistance to earth and polarity I remember a picture of a pipe end (gas) that had been pinched and soldered...
  4. M

    Rainwater Run off

    Thanks for your reply. Can someone please confirm this figure of 4 m sq. I don't want to discuss this with my neighbour without correct info. He hasn't finished his building work yet so still time to put it right. Thanks in advance. Mr Smyth
  5. M

    Rainwater Run off

    Looking for some advice. When is it acceptable for the downpipe from a gutter to terminate by simply directing the water away from the house rather than into a rainwater drain. My neighbour has extended his house and only 1 of the 3 downpipes terminates into a drain. This concerns me as...
  6. M

    Yplan switching problems

    This is the first thing that springs to mind Check the position of the pins on the rear of the programmer. Check the installation instructions of the programmer in question but on the ones I use the position of the pins/links you make the programmer suitable for Pumped/Gravity, Independent...
  7. M

    Worcester 28 Problem

    Some further detail on which Worcester 28 it is would be good. But I am assuming it is a 28cdi seeing as you are talking about fail point H. Fail point H denotes burner lockout. Burner lockout can happen for a number of reasons, gas pressures, ignition, flame rectification to name a few...
  8. M

    Potterton Performa

    Sorry, Its a Performa 28 Thanks inadvance for your help For future ref can you pass on which and which don't?
  9. M

    Potterton Performa

    Can anyone tell me if the Performa has a pump overun? I'm sure it should but I can't find it in the MI's and I have been working on one today that doesn't (pump overun, that is) Hope you can answer my question Thanks
  10. M

    Boilers and water softeners

    I have fitted about 10 Hydroflows. As it is electronic I assume it does away with any problems from deposits. One of the reasons I recommend it is its fit and forget benefits. It also claims to work retrospectively?? They cost about £100 and are a very simple DIY fit...
  11. M

    Setting up a plumbers tool kit

    I had a whole lot of stuff nicked so had to replace. Found car boot sales an excellent source. (for some stuff) Needed to look around... didn't find my own! Stilsons for example, paid £1 for a good pair (actually branded, stilson) probably donkeys old, but nicely worn in. For me they...
  12. M

    Balanced flue up a chimney

    I attended some vokera training recently and there rep was telling us of the flueing options they have developed. They have a 2 pipe flexible flue system that can be dropped down a chimney (best to hold on to one end though) They do alot of local authority work and need to replace BBU cheaply...
  13. M

    How long will my boiler last?

    I'm asking this question to promt a discussion. Had this same discussion with a customer..... not so much a new condenser but an existing boiler. The customer in question would not except that after 14yrs I was suggesting it maybe time to replace her Lynx. A mexico/kingfisher or diplomat...
  14. M

    unable to repressurise combi boiler

    Had one of these a while back with same fault. Dis-connected the negative APS tube and blew through it. This cleared a minor obstruction and got the boiler working. When I returned the next day with the APS the boiler had lasted most of the day but had failed just before i got there. Changed...
  15. M

    Ideal response 120 boilers - ignition problems

    Sorry Kieran, spoken to him. Mill Hill to SW19, to far, would you believe
  16. M

    Problems 28CDi

    Went back to the job today and all was fine. Looks like the fast cleanse did the job. Drained out the system, water quite clear and refilled, with inhibitor. Customer intends to replace 4 out of the 10 rads in the summer so I have advised him to remove and flush out the others with a hose...
  17. M

    Ideal response 120 boilers - ignition problems

    This maybe something as simple as the spark gap. But i have also know ignition problems to be the first signs of leaking heat exchanger. But whatever it is it probably needs to be checked out by a CORGI. Unless you know a local engineer it may be a good idea to get IDEAL out to it on a...
  18. M

    Im getting air in system but cant figure out why

    'advanced state of corrosion'..... that sounds scary, Softus. Could just be that your cold feed is partially blocked. Try placing a magnet next to the copper pipe where the vent and feed join the system. Copper is not magnetic. Could be that pump speed is set too high. Has the pump...
  19. M

    Problems 28CDi

    In reply to both. Had my eye in the diverter valve pin right through one of its cycles. The pin did not move as the flame dropped out. I think it is the main HE. This will either by solved (for now atleast) by the fast cleanse or I'll change the HE. Either way I'll advise the customer to P/F...
  20. M

    Problems 28CDi

    All..... well perhaps not all. Have been trying to solve a problem on a Worcester Bosch 28CDi for about a week now (thank God I'm not paying for the parts) Problem - HW goes cold after about 50 seconds and then hot again and continues to cycle like this. Heating all OK rads get hot very...
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