Sundial Y v Sundial S

[DIYedboy]

While I have your attention then lads, which is the best ABV to buy?

 

[davebgas]

Honeywell make a decent one.... then again honeywell make pretty decent everything IMO, except smartfit that is

 

[Goldberg]

I understand it now, it's not really about TRV's

Correct. Please see my post above. And the one on page 2. And page 3. And page 4. And 5. And 6.

if I have 2 2port valves I'm in trouble every time the roomstat says 'shut down son I'm hot' cos the boiler waterjacket will overheat it's contents as the overrun can't clear it hence the need for the ABV

You don't "need" an ABV - what's essential is a bypass. However, an automatic one is better than manual because it opens only when the system needs it to, instead of being open all the time.

 

[Goldberg]

which is the best ABV to buy?

Danfoss make a lovely one. Not cheap, but a gorgeous hunk of brass.

 

[davebgas]

Manual BP NOT recommened by any manufacturer... can be closed in error.

 

[bengasman]

You don't "need" an ABV - what's essential is a bypass.

Don't fall for his argument, berk has decided that the building regs don't have a legal status unless it is stated in the basic document; the APD's (which is effectively the everyday guideline of how to do things) don't apply to him.

In fact, you might find it less confusing if you just click the "ignore" button in one of his posts.
Unless of course you think some fool without a job is just as likely to get it right as a number of people who all earn their living doing this stuff.

 

[davebgas]

http://www.honeywelluk.com/range.aspx?r=by

Oh just noticed, open the link and read the last sentance on the info on the valves....

Cant use manual bypassess no more..... unless Honeywell are lying that is

 

[kevplumb]

by the way you don't need a roomstat either ask goldberk

I agree, but it isn't in contravention of The Building Regulations, per se.

if i where you pratt i would shut up now

 

[bengasman]

Dear Diyedboy,

Please find below an example of coldberk talking about things he does not really understand. (or maybe better: really doesn't understand)

You don't "need" an ABV -

In that case:
surely you can explain to the op how he can maintain his required delta T of 20 K with a manual bypass.

 

[Goldberg]

Cant use manual bypassess no more..... unless Honeywell are lying that is

Building Regulations state that if a bypass is installed, an automatic bypass valve must be fitted.

I suppose it could be that they're lying; it's more likely that the writer went on a course and can't bear to face the fact that he's paid to be misled. It happens a lot.

 

[kevplumb]

ooh you smooth talking b*stard you are

 

[kevplumb]

I suppose it could be that they're lying; it's more likely that the writer went on a course and can't bear to face the fact that he's paid to be misled. It happens a lot.

i suppose you don't need a boiler interlock either then smart mouth ?

 

[bengasman]

Dear Diyedboy,

Please find below an example of coldberk talking about things he does not really understand. (or maybe better: really doesn't understand)

You don't "need" an ABV -

In that case:
surely you can explain to the op how he can maintain his required delta T of 20 K with a manual bypass.

 

[davebgas]

Building Regulations state that if a bypass is installed, an automatic bypass valve must be fitted.

Isnt my quote, see Honeywells site

it's more likely that the writer went on a course

Didnt pay a penny for the course

 

[Goldberg]

Isnt my quote

I didn't say that it was. Did you not read the post properly, or are you a "fucking ******"?