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[Taxi_Driver]

All in and installed in day and a 3/4 

Was very surprised by the amount of sludge in the system after the plumber showed me the magnets out of the powerflusher. He'd left it running for over an hour and in that time about nearly an inch of sludge had built up on the two magnets 

And for TB.....I turned the bath hot tap on full and then turned the kitchen sink tap on full....within a minute the boiler was registering 45C (45C is the target temp for the hot water) and hot water coming out of both taps.....boiler burner was running at 80%  ..... so dont think i have to worry about having a shower and putting the washing machine on at the same time 

Oh and as an experiment the plumber agreed to leave the gas pipe at 15mm and only change it to 22mm if the pressure at the boiler was below the manu spec.....with boiler running (central heating on) it was quite a bit above the min pressure required.....so plumber left the 15mm pipe as was 

Just trying to get my head round the new wifi timer/stat he put in.....no simple on/off's for the heating....just 5x target temps for the day ... but think ive got it.... 

[plym ian]

Programming a boiler is like rocket science

ive had mine about 6 years and still havent got the hang of it

[Andy B]

...... so dont think i have to worry about having a shower and putting the washing machine on at the same time  ....

Aren't washing m/c's cold fill only? Ours is, as was the last one ..... 

[Taxi_Driver]

...... so dont think i have to worry about having a shower and putting the washing machine on at the same time  ....

Aren't washing m/c's cold fill only? Ours is, as was the last one ..... 

Mine is an old Bosch.....it takes hot and cold....set it to 40C wash and above and it takes the hot water 

[Andy B]

...... so dont think i have to worry about having a shower and putting the washing machine on at the same time  ....

Aren't washing m/c's cold fill only? Ours is, as was the last one ..... 

Mine is an old Bosch.....it takes hot and cold....set it to 40C wash and above and it takes the hot water 

That's all I know of our washer ..... it lives in the garage & SWMBO puts stuff in & then takes it out later in the day 

[PhilRich]

All in and installed in day and a 3/4 

Was very surprised by the amount of sludge in the system after the plumber showed me the magnets out of the powerflusher. He'd left it running for over an hour and in that time about nearly an inch of sludge had built up on the two magnets 

And for TB.....I turned the bath hot tap on full and then turned the kitchen sink tap on full....within a minute the boiler was registering 45C (45C is the target temp for the hot water) and hot water coming out of both taps.....boiler burner was running at 80%  ..... so dont think i have to worry about having a shower and putting the washing machine on at the same time 

Oh and as an experiment the plumber agreed to leave the gas pipe at 15mm and only change it to 22mm if the pressure at the boiler was below the manu spec.....with boiler running (central heating on) it was quite a bit above the min pressure required.....so plumber left the 15mm pipe as was  Just trying to get my head round the new wifi timer/stat he put in.....no simple on/off's for the heating....just 5x target temps for the day ... but think ive got it.... 

Should have tried it with gas fire on (if any) & all oven &  hob burners lit as for cooking Sunday Lunch or Turkey Dinner at Crimbo! You may find the 15mm supply struggles to give adequate pressure to supply optimum output    

[Shackeng]

What make is it?

[Taxi_Driver]

All in and installed in day and a 3/4 

Was very surprised by the amount of sludge in the system after the plumber showed me the magnets out of the powerflusher. He'd left it running for over an hour and in that time about nearly an inch of sludge had built up on the two magnets 

And for TB.....I turned the bath hot tap on full and then turned the kitchen sink tap on full....within a minute the boiler was registering 45C (45C is the target temp for the hot water) and hot water coming out of both taps.....boiler burner was running at 80%  ..... so dont think i have to worry about having a shower and putting the washing machine on at the same time 

Oh and as an experiment the plumber agreed to leave the gas pipe at 15mm and only change it to 22mm if the pressure at the boiler was below the manu spec.....with boiler running (central heating on) it was quite a bit above the min pressure required.....so plumber left the 15mm pipe as was  Just trying to get my head round the new wifi timer/stat he put in.....no simple on/off's for the heating....just 5x target temps for the day ... but think ive got it.... 

Should have tried it with gas fire on (if any) & all oven &  hob burners lit as for cooking Sunday Lunch or Turkey Dinner at Crimbo! You may find the 15mm supply struggles to give adequate pressure to supply optimum output    

all leccy 

[Taxi_Driver]

What make is it?

Its the 31kw one....

http://www.vaillant.co.uk/products/domestic-boilers/combi-boilers/ecotec-plus-824-831-837/

[Taxi_Driver]

Even more impressed with it now....its been a month since it was installed...

With old boiler during the summer, it used approx. 50 units of gas just heating the hot water once a day/month
During winter months this increased to approx. 200 units of gas/ month with the heating on just in the evenings.

New boiler has used 83 units this month....heating on in the mornings as well as evenings ( 20C set on the room stat 5.30am to 7am, 21C set for 5pm to 10pm)

Ok, I know October hasn't been that cold and I expect the gas usage to increase as the weather gets colder....but carnt see it getting anywhere near what the old boiler was using, even tho its on for longer than the old one 

[Shackeng]

The new boilers are so much more efficient these days, my 5 year old viessmann 200-W was measured at its recent service as 98.4% efficiency. Of course I have no idea what that means, but it sounds good!.

[Field Marshal Dr. Opti]

The new boilers are so much more efficient these days, my 5 year old viessmann 200-W was measured at its recent service as 98.4% efficiency. Of course I have no idea what that means, but it sounds good!.

Yep...time and technology move inexorably on.

A century from now a car will be made that is more efficient than an Omega. Hard to imagine I know, but believe me it WILL happen.

[Taxi_Driver]

The new boilers are so much more efficient these days, my 5 year old viessmann 200-W was measured at its recent service as 98.4% efficiency. Of course I have no idea what that means, but it sounds good!.

I can certainly let you know, that wasn't measured (tho I don't know how they could measure that on a boiler service!) running at full chat....
Viessman are the only manu's afaik, that quote boiler efficiency when the burner is running at 30%....other manu's quote the efficiency at full chat....mine is suppose to be nearly 90%, id suggest probably yours is just under the 90% mark as well....

Tho tbh, as you probably know, apart from when the boiler first turns on ( unless your running a fast flow hot tap, assuming a combi boiler) the boiler soon turns the burner down....to about 20-30%,  so less condensate is escaping from the flue.... the more condensate that returns to the boiler, the more efficient it is 

[Shackeng]

The new boilers are so much more efficient these days, my 5 year old viessmann 200-W was measured at its recent service as 98.4% efficiency. Of course I have no idea what that means, but it sounds good!.

I can certainly let you know, that wasn't measured (tho I don't know how they could measure that on a boiler service!) running at full chat....
Viessman are the only manu's afaik, that quote boiler efficiency when the burner is running at 30%....other manu's quote the efficiency at full chat....mine is suppose to be nearly 90%, id suggest probably yours is just under the 90% mark as well....

Tho tbh, as you probably know, apart from when the boiler first turns on ( unless your running a fast flow hot tap, assuming a combi boiler) the boiler soon turns the burner down....to about 20-30%,  so less condensate is escaping from the flue.... the more condensate that returns to the boiler, the more efficient it is 

Came up on the printout, but ...

[Marks DTM Calib]

The new boilers are so much more efficient these days, my 5 year old viessmann 200-W was measured at its recent service as 98.4% efficiency. Of course I have no idea what that means, but it sounds good!.

That's bull shit, no gas burning heater can achieve more than about 94% on the best ones....and even that's a very dubious figure......what's more, there is no way they could measure boiler efficiency, only combustion efficiency  . So by measuring the flue gases they are telling you its combustion performance and not its ability to turn the chemical energy into useable heat. 

The stupid thing is even the best of the older non-condensing ones were up in the 80's