Advice on a good boiler

[ceedy]

Still looking .

As we have a large inglenook fireplace with the Housewamer and fire in place , been looking at the baxi condensing back boiler, seems it might work on the existing gas feed?, but will need a whole new concentric flue line put in.but no major pipework changes , compared to new gas feed and boiler /tank moved upstairs to another room.

Not that happy though with the baxi electric fire fronts they offer , would rather have a stand alone flueless gas fire instead , running off the gas feed ?.

any comments ? .. no too much laughing ?!!

Chris

PS. was looking at Keston ? , just cos they seemed different ,but they seem to have a bad press generally?

 

[WHPES]

I would have thought that the pressure drop would be lower with the larger diameter pipe.

Dynamic pressure (pressure when gas is flowing) is dependent on the section with the greatest friction (usually the narrowest). The wider the pipe diameter, the less the friction.

 

[evsy01]

quote ;;;;;;;;;;;However some boilers to look at are

Worchester,vaillant,advanta,baxi,even stick the ideal classic he in there as old system ,only 'B' efficiency though.


why do i never hear any one mention vokera as a good boiler ....
what do you think of that make of boiler ?

varuka's are not a gd boiler stay well clear! only get 1 if u want some free golf clubs from plumb center

 

[Billy Bob Bob]

definite no no, risk of explosive mixture occuring.

wtf??????????????????????????????????????????????????????????????????????????were did you dream that one up??????????????????????????????????????????

...........and don't touch Potterton with a bargepole - pile of c**p

dont put the performas in that category they are not the same as the hundred odd i have fitted testify

 

[Puddle]

Still looking .



PS. was looking at Keston ? , just cos they seemed different ,but they seem to have a bad press generally?

Biasi Riva advance 24HE

working on above ideas how about a

ideal isar

the potterton performer/mains as proved to be a very reliable boiler as said,good purchase price,good to work on,parts reasonable,band 'B' though


imho

 

[pauls]

when you say cant go up in size on gas ive seen a small length of 22mm coming off meter and then going up to 28mm

 

[migoplumber]

as said above, not technically correct, but does decrease pipe friction.

still waiting for an answer as to explosiveness ?!

 

[gakmonkey]

when you say cant go up in size on gas ive seen a small length of 22mm coming off meter and then going up to 28mm

to be fair I have seen a trv on the gas supply to a radiant fire, but it does not make it correct. does no one use 28mm meter unions?

 

[ceedy]

Still not decided yet ??..

But have done all the prep work for the new Pipe feed to the new location in the upstairs cupboard, ripped down new coving cut grooves in walls etc .at least the boiler will be much closer to the main feed/return pipe runs to the Rads, but further from the tank .
The new gas line will be 8.6 metres with 4 or 5 ..90 degree bends ..

But before we go any further, is there any point in going above 22mm ?

I'm getting all the supplies in then getting a goalkeeper to install it all..
My number one son runs the local footy team and the goalie is a Corgi! .

If I can get hold of him , a bit busy will confer with him on this , but its alway better to get lots of Opinions.. oops .. info !!

Chris

---------------------------------------------

I'm thinking a Remada Avanti 24 or 30 System Bolier is the one .. a teeny bit more costly, but longer warranty than most .,?

Seem a reasonable choice ??? then I can chuck the roof tanks etc .. and have more access up there, for more junk

C.

 

[prs1]

sometimes you just dont have any option but too upsize to obtain correct gas flow rates.Yes i know it not best practise but theres times when cost and what is resonably practicable.
I had to do this on an install of a 33kw he combi on a long run,but could not accsess the first 8ft from meter,custard dint want an external run on her 275,000 pound house and she didnt want me chisleing her dining room wall out.
It was were GSR Probationary visit came to and he was quite happy that it was the resonable thing to do after checking the calcs for sizing.
No mention of explosive mixtures though other than the usual 5 to 15 % if i remember right.

 

[ceedy]

Well done the chiseling of the dining room already ,,
And I'm not have an external draped around my nicely point hamstone
either anyhow that would be over 20 meters .

22mm will fit in all the places round/through the beams, but 28mm will be a bit tight with no room for wrapping.

so 22mm it is then , can still use the old 15 mm back boiler feed for a standalone fire in the inglenook.

Chris.

 

[Billy Bob Bob]

pipe sizeing is a pain in the axxe l worst run i ever did was 50 ft of 1.1/4 then to inch then 22mm, 2 x 24 kw combis in a pub calcs for 48kw

 

[moony]

as said above, not technically correct, but does decrease pipe friction.

still waiting for an answer as to explosiveness ?!

your not going to get one cos its a load of **** lol

has to be a mixture of gas and air in pipe for explosive reaction - its not going to happen unless the gas valve sucks air in - even then it wouldnt be no where near enough to be explosive as he said

 

[Billy Bob Bob]

thats what i said q, lol? i pixxed my self when i read that

 

[migoplumber]

ceedy, good boiler choice - no need to go above that for any normal domestic situation.
gasman

 

[InterGAS]

I just fitted a Baxi 133HE into the catholic church and it offers perfect hot water, keeping in mind its a priests hotel, well kind of , 6 bedrooms and 6 basins - 5 baths and around 15 rads, not a problem.
Good after sales, cheap parts nice boiler.
If i remember right you can do something with the board to bump it up and extra 20,000 btu without effecting warrenty.
As for pipe sizing you should complete an assesment, taking into account other appliances and your mains gas supply, for example our area is shocking.
you working pressure at the boiler should be 2mbr loss to the valve and MAYBE another 1mbr if your pushing it across the valve body and you can go a bit further is your reading the regs inside and out by getting a poor supply from the street if NGN agree.
28mm I have seen in houses, but 22mm is normal.

why do i never hear any one mention vokera as a good boiler ....
what do you think of that make of boiler ?

Voker compact 29 is a great boiler we fit in the average house, hot water and heating excellent B rated but only because of fan speed, the vokera compact looks better than say baxi duotech and is better!
Only £540 with flue, clock and stat for us, nice package for 1400 supply and fit with 5 year warrenty.
Nothing has ever and will ever beat the Baxi 105 basic combi!
Outstanding!

 

[garry38]

varuka's are not a gd boiler stay well clear! only get 1 if u want some free golf clubs from plumb center

I take it you have never fitted vokera then because if you had you would no that the vokera linea he is an outstanding boiler and as good as any out there it is also a rated and i fit them all the time.
also the vokera compact he is a cracking boiler to fit if you are doing work for someone on a budget but this boiler is b rated.
there is not many who would say STAY WELL CLEAR as i have fitted around 50 vokeras in my time with very little problems

 

[prs1]

Untill you have to buy a board for one,might as well buy a full boiler and break it yer self.

 

[ceedy]

Just Been offered a new unused Ideal Icos 24kw M3080 , with flue kit for £120 ..

well its cheap.. any other plus points ? .

Chris

 

[Puddle]

Just Been offered a new unused Ideal Icos 24kw M3080 , with flue kit for £120 ..

well its cheap.. any other plus points ? .

Chris

Is that what they are paying you,to take it off thier hands?

 

[ceedy]

..

But wos after more contructive answers

 

[oldplumber]

great for standing on to install a remeha or baxi on the wall, after all theyare a solid and compact boiler. Nothing else to say about the icos really accept that on all but one ive come across recently the temp control knob had been broken off, probably by the customer trying to get some heat out of theboiler, lol

 

[ceedy]

Still ponsing about on this .. but had other things to do.

Looks like settling on a W-Bosch Greenstar, ?? maybe .. 18 RI seems quite suitable or shall I go up to a 24? just in case ...the old Boiler was only 50k Btu's. ?

C.

 

[doitmyself]

Looks like settling on a W-Bosch Greenstar, ?? maybe .. 18 RI seems quite suitable or shall I go up to a 24? just in case ...the old Boiler was only 50k Btu's.

50k BTU is just under 15kW

What does the Boiler Size Calculator say you should have? Get the nearest size larger. There's no point going over the top as you will then be restricted by your radiators.

If the calculator says that you need a 15kW boiler but the house is not getting warm enough, you need to make sure that your rads add up to at least 15kW. You can do this by using the Stelrad Elite Catalogue.

 

[ceedy]

50k BTU is just under 15kW

What does the Boiler Size Calculator say you should have? Get the nearest size larger. There's no point going over the top as you will then be restricted by your radiators.

If the calculator says that you need a 15kW boiler but the house is not getting warm enough, you need to make sure that your rads add up to at least 15kW. You can do this by using the Stelrad Elite Catalogue.

Being so old and so long ago since the install, the Housewarmer is either 45k or 55 k , even the GC number doesn't sort it

So I split the difference..

That calculator give 13.5 kw , and the rads have been just about ok with the old housewarmer, but they could certainly handle a bit more heat OK

BTW other online calcers have give slightly higher results, up around 16kw.

Thats using a roof setting of not a lot of insulation, and this year the roof is coming off and being all redone with insulation, felt, slates etc.... ( a real wallet thrashing time ).

Chris