balanced flue in a compartment reg help

[rizzla]

Hi all, I'm fitting a balanced flue burner output of 26kw I've worked out vent space of 143cm2 venting outside high and low.
But I haven't fitted in a compartment before, I have been told no ventilation is required surely that's not right.
Would be grateful for any help

 

[Reg Man]

Manufacturer's instructions will tell you. Air for cooling purposes only.

 

[rizzla]

Manufacturer's instructions will tell you. Air for cooling purposes only.

There was the confusion, it's for cooling not combustion, long day's catching up with me

 

[dontknowitall]

If it's a balanced flue that's going straight outside, then no extra venting is required as the flue is taking the air from outside.

If you're installing the flue in the compartment you need to think again lol!!! :smile:


[Edit] There is an official diagram in the books about all this which is pretty clear to be honest!

 

[rizzla]

If it's a balanced flue that's going straight outside, then no extra venting is required as the flue is taking the air from outside.

If you're installing the flue in the compartment you need to think again lol!!! :smile:


[Edit] There is an official diagram in the books about all this which is pretty clear to be honest!

It is a balanced flue and will be installed in a compartment, I have double checked the technical book 4 and sorry but it's not that clear to me, most of my installations are outdoor burners with a few room sealed but this is my first compartment, obviously I want to check everything twice to make sure they meet regulations

 

[Ermintrude]

If it's a balanced flue that's going straight outside, then no extra venting is required as the flue is taking the air from outside.

If you're installing the flue in the compartment you need to think again lol!!! :smile:


[Edit] There is an official diagram in the books about all this which is pretty clear to be honest!

Can U install a balanced flue that isn't room sealed and didn't vent to outside directly?

 

[rizzla]

Can U install a balanced flue that isn't room sealed and didn't vent to outside directly?

Do you mean a balanced flue in a room?
If so no vent would be required
If in a compartment vented from outside 550 top 550 bottom
If in a compartment vented from a room 1100 top same for the bottom

I have been asked to install the boiler in a kitchen within the unit's so I am just getting the regs right with clearance and venting ect

 

[stani]

Isn't that a cupboard not a compartment.

 

[rizzla]

A compartment is defined as a room or space partitioned for the use of containing a plant, or somewhere with insufficient volume to disperse build up of heat around the plant

 

[stani]

I have been asked to install the boiler in a kitchen within the unit's so I am just getting the regs right with clearance and venting ect

Are you fitting the boiler in a kitchen or am I reading this wrong.

 

[Ermintrude]

Out of interest why a balanced flue? What's the epc?

 

[rizzla]

I have been asked to install the boiler in a kitchen within the unit's so I am just getting the regs right with clearance and venting ect

Are you fitting the boiler in a kitchen or am I reading this wrong.

Yes inside a unit yet to be built

 

[rizzla]

Out of interest why a balanced flue? What's the epc?

I didn't order the boiler it is already on site

 

[stani]

Yes inside a unit yet to be built

So, out of interest are you going to fit a high and low level vent in the kitchen cupboard door?

 

[tamz]

I have been asked to install the boiler in a kitchen within the unit's so I am just getting the regs right with clearance and venting ect

This wouldn't by any chance be a Boulter Classic ?

 

[Ermintrude]

I didn't order the boiler it is already on site

Is it new? Check mfrs instructions for epc ?

 

[rizzla]

It's new, I will vent outside high and low the unit will house the boiler in a corner

 

[stani]

It's new, I will vent outside high and low the unit will house the boiler in a corner

is the unit a purpose built compartment or a kitchen unit?

 

[rizzla]

is the unit a purpose built compartment or a kitchen unit?

It will be purpose built, hence the easy vent to outside

 

[stani]

It will be purpose built, hence the easy vent to outside

sorry for the inquisition but when you called it a unit in the kitchen, I thought you actually meant a cupboard.
but high and low in your compartment will do.

 

[rizzla]

sorry for the inquisition but when you called it a unit in the kitchen, I thought you actually meant a cupboard.
but high and low in your compartment will do.

No problem, wording should have been better.
Best to know it's advice for a engineer lol

 

[Bunker]

I dont get this either...How is the flue exiting? old chimney/ through wall?

 

[rizzla]

I dont get this either...How is the flue exiting? old chimney/ through wall?

Horizontally through the wall obviously leaving the 600mm from vents

 

[Reg Man]

[FONT=Arial,Bold][FONT=Arial,Bold]1.8.5 Compartment Ventilation Requirements
[/FONT][/FONT]A compartment is a room or space partitioned for the purpose of containing plant and
equipment, or a room or space of insufficient volume to satisfactorily disperse the build up of
latent heat around the plant and equipment contained therein.
BS 5410 Part 1 requires that when an appliance, whether of the open or balanced flue type, is
located in a confined space, air must be provided through purpose made non closable
openings for ventilation purposes. This is in addition to any air required for combustion
purposes. Where the air is taken from a heated space (i.e. from an internal space) purpose
made openings, one at high level and one at low level, both having free areas of 1100mm2 per
kW of appliance maximum output rating, are required. Where air is taken from outside the
building, purpose made openings, one at high and one at low level, both having free areas of
550mm2 per kW of appliance maximum output rating, are required.
It should be noted that compartments need to be provided with ventilation, whether the boiler is
of the open flued or room sealed type. Information from OFTEC, follow manufacturer instructions.