Hidden costs of changing to a combi

[Millwright]

A mains-pressure cylinder was similar but added annual servicing costs beyond the gas boiler service.

Don't you just love manufacturer snake oil.

 

[bernardgreen]

if you did you would already know the answer

For all you know I do know the answer, ( well one that is applicable to some boilers ).

 

[Hot&Cold]

This means an emergency closure of the village High Street, a busy through route, is un-avoidable.

Roads can be closed off or have temporary workings for many reasons, Some people even have roads closed to re thatch their 500 year old cottage.Was that you Bernie ? fess up .

Bernard,the water company will be next to dig up the street They like soft soil.

Informally one of the Cadent people mentioned that there are many similar locations around the UK where the increased peak morning demand from new combi boilers running showers is taking the location's gas supply close to if not beyond it's maximum capacity.

That is pure ballcocks,the mains renewal work is planned works due to ageing pipework (mains has a time limit) ,during planned works other urgent work could be identified,(that means they underestimated the original work).

Bring back transco

 

[bernardgreen]

Some people even have roads closed to re thatch their 500 year old cottage.Was that you Bernie ? fess up .

Not closed. Single track working under three way traffic light control. Planned over a year in advance and during the school summer holidays.

Bernard,the water company will be next to dig up the street They like soft soil

That was a couple of months ago, Replacing covers in the middle of a junction.

That is pure ballcocks,the mains renewal work is planned works due to ageing pipework

It was stated that the work would be a simple job. Moving the supply pipe feeding a side street from an old small and now inadequate main under the High Street to a less ancient, larger main running under the other side of the High Street.

The planned re-newal of the old main was to be several years in the future. Only now it is urgent as the condition is very poor and the excations cannot be back filled until the pipe is repaired / or replaced.

 

[bernardgreen]

The drivel about fan speeds and gas valves proves that you less than you think.

Was it a freudian slip to leave out a word.


So how does a boiler modulate ? Perhaps you could drissle some knowledge about the way boilers moduate ?

 

[Hot&Cold]

Not closed. Single track working under three way traffic light control. Planned over a year in advance and during the school summer holidays.

Slowest single track working ever seen

Were the thatchers on day work ?

 

[bernardgreen]

Were the thatchers on day work ?

It is a very large roof over two properties, a bit too much for a DIY job...

 

[dan2071]

As far as I was aware, under gassing a premixed burner isn't ok. If you drop the working pressure at a worcester to below 14mbar, the CO goes off the scale.

If the boiler is at high demand and the boiler is under gassed, the fan will ramp up and start sucking gas and air. If there isn't enough gas, it'll suck a lower gas to air mix which would give you bad combustion?

 

[Hot&Cold]

Bernard.Yes i have been there last year on a project and if you read the cadent press release,there is no mention of combi boilers.

 

[bernardgreen]

nd if you read the cadent press release,there is no mention of combi boilers

I haven't been aware of a Cadent press release. ( is there a link to it ? ) No doubt there is no mention of combi boilers. From various "at the site" sources the information is that the existing gas supply route to the area is too small to supply the increasing demand for gas. The area concerned is small area of the villlage, about 60 homes and there has been only one new house built there in the past 30 years. But gas consumption has increased to such a degree that the supply route has to be improved.

 

[AGAS]

When natural gas was proposed in the 1960s, only two meter sizes were standardised on, U6 and U16. 6 cu/m hr (212 cu foot per hr) and 16 cu/m hr. They had many sizes. A U6 was designed to cope with the vast majority of domestic homes. Previously they had 3 cu/m hr (3/4" connections) and 3.75 cu/m hr (250 cu foot per hour). When converting to NG from town gas the distribution system could cope as pressure doubled with pipes already large bore to cope with town gas. The home gas installation pipes were instantly oversized. The CV of the gas was higher as well, able to deliver twice as much heat into a home down the same service pipe. A house was supposed to consume 6 cu/m hr if the need was there. They have cut back on this, skimping, taking an average for a district. A U6 can give approx 62kw of heat.

If there are distribution problems at peak hours, then get a combi with a small water storage vessel integrated, it will help. I know one fitter who fitted 28mm pipe from the meter to the combi and 32mm near the boiler to give internal gas storage when the combi kicked in. It worked - the burner was susceptible to pressure and flow changes. Matters like having 1" x 1" maintaps help a lot as well. It is a matter of attacking all points, until they put in a proper supply as they should have done initially. So a homeowner has to pay extra because the gas distribution people skimped. A 40kW combi in a supply that should be capable of taking 62kW is not even near maximum capacity.

where did you copy and paste that then

bernardgreen FFS's

 

[Hot&Cold]

Informally one of the Cadent people mentioned

Bernie the cadent operatives have ID badges hanging whilst in public view ,they are very helpful people and happy to answer questions. Beranrd you have not added the cadents operative first name.So please get it or offer an apology to cadent (national grid gas).They do monitor this and other forums

fess up you hate import boilers but you purchased a box of foreign parts and you have the only Reno in your village.

bernie its a small world and your neighbour a couple of doors away does nice cakes !

 

[Hot&Cold]

cadent public press release
there are other private releases available

This is just a guide

Mod has edited many posts here.

 

[bernardgreen]

Old and Bold what has Clapham got to do with my village.

Ageing gas mains in Mount Pleasant Road, Queens Crescent, Knights Avenue Highbury Grove, Bents Close, Cody Road and Lanchester Close in Clapham, Bedfordshire are nearing the end of their service life and engineers plan to replace them in April and May 2017. The tough new pipes should last for decades and help safeguard safe and reliable gas supplies to the area.

and have a very low thatch roof overhanging the public road.

It overhangs the pavement and only gets hit when large badly driven vehicles mount the pavement.

if you want to live in a flood plain

When we built the house on the banks of the Sharn Brook ( the Walter Segal self build ) we were not aware the babbling Sharn Brook could become a raging torrent.

As regards all the other comments..........I don't give a monkey for your opinions.

 

[bernardgreen]

bernie its a small world and your neighbour a couple of doors away does nice cakes !

I know. bacon and brie panini with cranberry......sheer bliss......