I still have no idea what so ever what the 9 M rule is ?? I have had a look at my 2 tapes one is 5M & the other is only small being just 3M even if I use em both I can't make 9 so what is it Gray ???
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
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Gray0689
Discharge pipe (D2)
This pipework runs from the tundish to the termination point.
It is supplied by the installer and must be installed correctly for both safety and design considerations.
It must be terminated in a safe place where there is no risk to persons in the vicinity of the discharge.
It must be of metal and capable of withstanding the temperature of the discharged water.
It must be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic resistance exceeds that of a straight pipe 9 metres long. If the total equivalent resistance length is in excess of 9 metres see sizing of D2 copper discharge pipe for common temperature relief valve out sizes on page 7.
This pipework runs from the tundish to the termination point.
It is supplied by the installer and must be installed correctly for both safety and design considerations.
It must be terminated in a safe place where there is no risk to persons in the vicinity of the discharge.
It must be of metal and capable of withstanding the temperature of the discharged water.
It must be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic resistance exceeds that of a straight pipe 9 metres long. If the total equivalent resistance length is in excess of 9 metres see sizing of D2 copper discharge pipe for common temperature relief valve out sizes on page 7.
My unvented was a mare. Full day course, paid upfront, no reading material but I had fitted a couple. Anyway turned up at 8.30, spent 45 mins on admin, went through a powerpoint presentation, seen the photos of one wall left in the house when it goes wrong, quick cup of tea, quick practical, 27 multiple choice questions at 11.30, back in the van and on the way home for 11.50. Didn't learn anything that wasn't already in the MI's. So slightly poorer, cost of course, diesel to get there and back, lost earnings and certification. But now(last 18 months) I can legally work on unvented cylinders. Really looking forward to my refresher in 3 1/2 years time to continue on this lucrative path. 🙂
What book is everyone referring to?
I have done a good few with solar no problems so far, maybe because I respect the fact that they can be lethal.
I hear they are bringing our regulations in line with the UK next year so it's more courses for everyone here.
I have done a good few with solar no problems so far, maybe because I respect the fact that they can be lethal.
I hear they are bringing our regulations in line with the UK next year so it's more courses for everyone here.
After such a poor experience at this training centre you of course will not be going back to them will you SimonG ? & will tell others just how poor the training was ?
Just like all other areas of life there are good & bad. Market forces should be brought to bear, you could alway complain if not to the centre themselves then to the awarding body it is not in their interest to have unsatisfied customers either.
As I have said before my local one fortunately is very good, 8.30 start 15min paperwork then power point till tea (9.45) bit after than out into the workshop looking at the different units & packages & other bits, then they had a rig that showed all the safety valves working including the Temperature relief going off, then lunch & back into the classroom going through the rest including the calculations etc. Exam started around 2'ish I think & we were out of there by 4PM.
Loss of a day's money + the cost but did learn loads, so not so bad.
I see Gray it is just the D2 pipe sizing, page 7 of what though ? & D2 over here does not now have to be a metal pipe but cant be certain types of plastic.
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Gray0689
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Gray0689
K
kirkgas
Change of material for D2, and now allowed to use hep2o self seal valve Dow allows connection to internal stack,I've done a few reassessment guys lately and they are moaning about having to redo the course but they don't know about the changes and have forgotten about sizing the D2 so they don't help the cause for saying reassessment isn't needed
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Sent from my iPhone using Tapatalk
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Gray0689
I'm not saying there should not be a course but there seems to be a stigma with unvented cylinders
They are simple but correct safety is a must
They are simple but correct safety is a must
J
jase158
yeah, to be honest there was a lot that I didnt realise before that I now know.
If I hadnt done the course,I wouldnt work on unvented,
1. filter in the mixed valve (if you didnt know you would spend hours trying to work it out)
2. hepvo valve and the different ways of running the D2 pipe
i.e. they are all small things but worth a days training.
the 9 metre rule is this
the D2 pipe must be 1 size larger then the the D1 pipe.
this must be a maximum of 9 metre including all bends (see manual for bend resistance)
if it is to be larger then the sizes must be increased to allow the pressure and heat to travel
very hard to explain in basic terms
If I hadnt done the course,I wouldnt work on unvented,
1. filter in the mixed valve (if you didnt know you would spend hours trying to work it out)
2. hepvo valve and the different ways of running the D2 pipe
i.e. they are all small things but worth a days training.
the 9 metre rule is this
the D2 pipe must be 1 size larger then the the D1 pipe.
this must be a maximum of 9 metre including all bends (see manual for bend resistance)
if it is to be larger then the sizes must be increased to allow the pressure and heat to travel
very hard to explain in basic terms
why do you need to do a reassessment just because you can now use plastic pipes and hepVo valves why can't the sponging training centers send out an amendment for us to read or do they think it needs to be drummed into us, It couldn't possibly be because they want to relieve you of another £200.00 for a half day course could it:wink_smile:
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Mike Jackson
The need for re-assessment is not down to the colleges. They are just fulfilling a role. It's a fact of modern day life that nothing can be taken on trust any more and we need to prove competency in more and more things.
There is no requirement to take the training you can just go and be assessed but I always take the training because in the intervening 5 years some things may have changed but also it is entirely possible that I may have forgotten things or not used certain aspects of it. I also find it useful to get my mind back in the way of thinking for exams as doing things correctly and being able to interpret things on paper are not always the same.
There is no requirement to take the training you can just go and be assessed but I always take the training because in the intervening 5 years some things may have changed but also it is entirely possible that I may have forgotten things or not used certain aspects of it. I also find it useful to get my mind back in the way of thinking for exams as doing things correctly and being able to interpret things on paper are not always the same.
Or could it possible be that when Part G of the building Reg's changed in 2010 (& it was publicised in the trade press) only a few silly people like me bothered to down load it (all free of charge) & read it to find out what was now required by the law ?
Of course you would now know what is required to be installed to every newly installed bath (not replacement for some reason) or what safety requirements are now required if a vented cylinder has only a 15mm open vent ? How about that it is now legal requirement that plastic cisterns be placed upon a base that extends at least 150mm bigger it.
These are just a couple of a whole raft of changes that require some explanation not just some piece of paper sent out with the likes of = D1 is now 600mm max, which clearly most engineers will not read any way, not withstanding that the visit to the training centre could be a chance to refresh your understanding of the subject.
I am in no way in favour of assessment for assessment sake but on this one it is clear that there is wholesale miss understanding when as I have said before at least 75% for all the units we visit are incorrectly installed.
Can I suggest that you attend the training (& assessment) Mark, before you pass comment on what it contains, you may just, like me learn some thing new, even if you think you are up to date.
Ive attended the training total waste of time whats the point in a course with an exam at the end that nobody fails FYI I'v also taken water regs, working at eights, Solar thermal, Solar PV heat pumps 17th edition & 2391 inspection & test so before you pass comment Chris Watkins can I suggest you take a running jump
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jase158
working at eights??? what about working at sevens?
and all he is trying to say is that the whole point is because there is loads of things that change and even if nothing changes in 5 years, the following 5 years they might change everything and it is worth the updating even if it doesnt seem like it
and all he is trying to say is that the whole point is because there is loads of things that change and even if nothing changes in 5 years, the following 5 years they might change everything and it is worth the updating even if it doesnt seem like it
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