Kingfisher air consumption spec.

[ollski]

ollski - I'm not familiar with some of your terminology.

40 - 89% currently ncs will be AR in 2008
under 40% currently AR

If the boiler room is considered a compartment ie too small to be a living space anything less than 90% is AR

AR?

Air from room:
hi 335 cm2
Lo 670cm2

Does this apply if there is no vent into the room (i.e. the 'room being the living space)?

Air from outside:
Hi 168cm2
Lo 335 cm2

And does this apply if there is?

Direct room vent:
139cm2

And does this apply if there is a 133mm diameter duct leading from the outside air?

softus the hi lo vents are only relevant if the boiler is in a compartment ie not large enough to be considered a living space ( although in London that could be a whole flat).
If the boiler is in a room standing on its own with a ducted vent with grills either end having no flyscreen, being non closable and with gaps between 5 - 10mm and of over 90% of the requirement (139cm2) it is fine.

If it turns out to be AR (at risk) this simply means the rgi turns it off at a user control and if the customer decides they arfe happy to use it they turn it back on and discharge any responsibility to the rgi.

 

[giblets]

Ollski, I would be interested to know what you consider to be a compartment.

My ACS refresher tutor said that, unofficially, any internal space of less than 5 cu m should be considered to be a compartment which sounds reasonable to my aging brain

As I understand the current vent regs, for open flued appliances in rooms/compartments/internal spaces;

0 - 39% of vent'n requirements = At Risk

40 - 89% of vent'n requirements = NTCS [until 01/06/08]

90 - 100% of vent'n requirements = No Action

From 01/06/08 all installations providing less than 90% = AR

All subject, of course, to your comments regarding the grilles.

 

[baxpoti]

If it's a Kingfisher 2 CF125, introduced around 1986.

Direct to outside
High level 220cm²
Low level 440cm²

Doubled if the ventilation is indirect.

 

[baxpoti]

Ollski, I would be interested to know what you consider to be a compartment.

As a general rule a compartment is an enclosed space with no window.

 

[Agile]

Yes, folks but isn't it another requirement that if the boiler has the requisite high and low vent to the OUTSIDE then the door should be reasonably airtight and there should NOT be any further vents to the inside and cannot be a lovre door?

Tony

 

[ollski]

Yes, folks but isn't it another requirement that if the boiler has the requisite high and low vent to the OUTSIDE then the door should be reasonably airtight and there should NOT be any further vents to the inside and cannot be a lovre door?

Tony

Absolutely, cross ventilation.