Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
Evil: Regardless of the age, and I get what you mean, in that you SET the level, as opposed to a mdern bouler that modulates, all calcs should be done at the maximum possible level. If, on the other hand, you are trying to get an existing situation working then I agree, you would set the boiler to a level that works.
Shaun: The networks seem to get away with making up their own rules, and a lot of their guys do not understand boilers. They do their tests with the HW on, and refuse to acknowledge that the "test" is with the boiler at FULL rate. When I did a stint with NG 3/4 years ago, there was an old BG (from the mid 70's) guy who blamed, specifically, Worcester boilers for the pressure problems because they "sucked" the gas out if the system. I tried to explain how modern boilers worked, but he just was either not capable, or refused, to understand.
But, Shaun, 7m3 propbably would be okay if that was before the diversity factor is applied (if that iswhat you mean?)
Bill: Re the cert, I had missed that. If everything works okay, and eg the hob is not droppong when the boiler is not on full, then one would note the discrepency, and issue the LL. If there was an issue, then you would apply the procedure.
Surely that has nothing to do with it? We can work on up to 70 kw’s. Once you get to 70 it is out of our scope?
I think you're getting a bit confused. I think it's max on one appliance up to 70kwts for domestic, but if the total is say on 3 separate appliances adds up to more than 70kwts it's okay.
And Firemant, yes you're right. Gas safe have said I should advise the client of the meter being too small ( 7.3m3 was after the diversity factor! ) and tell them to get the supplier in to take a look and see what they think, but if I see the flame is affected on the hob with all the appliances running I should AR it. I can also still carry out a landlord gas safety check and issue a certificate even though the gas volume will now be commercial if a bigger meter is fitted. That's because you don't have to do a tightness test, which seems a bit odd to me.
- May 23, 2015
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Wrong if your doing a llgsc all appliances together upto 70kw
Have to say I thought it was up to 70kw appliances not the across whole install.
On the point of a U16 meter and gas safe certificate not needing a tightness test then surely this would then become a commercial safety check in which you’d need the commercial qualification.
On the point of a U16 meter and gas safe certificate not needing a tightness test then surely this would then become a commercial safety check in which you’d need the commercial qualification.
The only way that would work is if there was more than 1 meter
Call Gas safe then. Any single appliance up to 70kwt for domestic and the total number of kwts from all the appliances is irrelevant. You can do as many kwts on a llgsc check as the meter can take.
Haven’t got time to debate this mate. On my way out for the weekend. Maybe one of the other mods can take a look please.
I am not commercial, and have never had the issue, but that sounds right to me. I thought commercial was an APPLIANCE at 70Kw, OR based on pipe volume. (>o.035?). Existence of either one will kick in commercial ticket requirement. I would not stake my house on this, though.
I've called gas safe and they have told me it's fine. No limit on kwts with appliances added together and up 70kwts for a single appliance for domestic.
The 70Kw comes from standards and regs which are generally used in domestic situations and will cover the installation of hot water boilers and all that goes with them (such as their associated flues and ventilation) up to but not exceeding a maximum of 70Kw net.
That is per appliance. It does not mean that you have to divide the 70Kw between all the appliances you install in one premises.
Other standards exist for larger appliances.
That is per appliance. It does not mean that you have to divide the 70Kw between all the appliances you install in one premises.
Other standards exist for larger appliances.
If you had a U16 installed you would (as you know) be working on a commercial sized installation.
Only if the m3 volume was over .0035 including the pipe work, which in this case it is, but it won't always be just because it has a U16 metete. Yes I know it's now commercial but I'm still allowed to do a llgc on the property as a gas tightness test is required. I will get a friend in who has a commercial ticket though to tightness test it for my own piece of mind.
Yes, I was referring to the job you are doing after a correctly sized meter has been installed (if it is installed). Following that you will be over the 0.035 M cubed, including the primary meter and that makes it a commercial gas installation. It is then outside the scope of IGE/UP 1B and within IGE/UP 1A.
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