Kitchen cold due to ventilation for Combi

saver_newbie

Hi,
We have Wocester-Bosch 24cdi combi boiler fitted in the kitchen, the combi was in the house when we bought the house. There is a permanent air vent to outside air and I am being told that this is to provide ventillation for the combi.
The problem we now face is that there is a constant draft and the kitchen can get very cold especially when one is not doing any cooking.
Is there any way I can prevent the draft and at the same time provide ventilation to the boiler ?
Many thanks for looking at the post. Looking forward to your advise.

Mankysteve

If its a sealed unit then you won't need the extra ventilation. Contact a Gas safe gas engineer to see if you can seal the vent or not

saver_newbie

Mankysteve wrote: »

If its a sealed unit then you won't need the extra ventilation. Contact a Gas safe gas engineer to see if you can seal the vent or not

Hi, I read the manual for the combi and it says vents are required into the room where the combi is installed. I was wondering if there is a better way to vent the room, I have heard of draft less vents etc but I dont know what they are. Moreover the vent is behind the kitchen cabinets but the air somehow finds its way into the kitchen through the gaps in the cabinets, so whatever I do, it will have to be on the outside.

ariba10

If it has a balanced flue ( where the the combustion air is drawn in and the exhaust are expelled from outside) it will not need separate ventilation.

Canucklehead

Hi

What does it say on the front of the manual?
'Open flue' or
'RSF'


GSR.

Mankysteve

You get an heat exchanger I have seen them that will fit in wall cost around the £150 price mark though if remember right. But i cant find any links at the moh.

ormus

the most common modern combis are RS types. you dont need a vent grill with these types.

RS = room sealed.

aliasojo

According to the WB site the 24cdi came in two versions...RS and OF.

http://www.worcester-bosch.co.uk/homeowner/products/gas-boilers/24cdi-rsf-discontinued-june-2007

http://www.worcester-bosch.co.uk/homeowner/products/gas-boilers/24cdi-of-discontinued-march-2005

OP you really need to clarify which version you have.


Edit: I see you've already checked your manual and it says vents are required, sorry, didn't notice that.

mikey72

If the book says you need a vent, don't block it.
It must be an old boiler if it needs ventilation, so the only real option I'm afraid to get a new combi fitted. You can then safely seal the vent, and save on the gas bill. Payback time should be quite quick as you won't have to heat all the cold air coming in too.

roger196

Look in the BES catalogue for no draft vents. The boiler manual will give the minimum area in square centimetres for the vents required. You must maintain this minimum area of vent. Most room sealed boilers do not need vents as they draw their combustion air from an inner pipe in the flue where the products of combustion go out of the outer pipe. Older boilers with open flues drew their combustion air from the room in which they were fitted. This room then needed vents to the outside. If these vents became blocked, you had a life threatening situtation. Insufficient air meant the methane was not burnt properly leading to the production of carbon monoxide.

Mankysteve

Also as its not a balanced flue you should have a CO meter in the room.