ACR STOVES Woodpecker Stoves WP4 Technisches Handbuch - Seite 6

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Flue Requirements

The flue must comply with current

Building Regulations Document J.

The Woodpecker range of stoves have

an internally removable baffle, and

therefore are able to be swept through

the appliance.

The construction of masonry, flue block,

insulated flue systems and flexible flue

liners must comply with the

manufacturers instructions at all times.

The flue must be:

A 150mm flue diameter is

recommended, 125mm may be

used if the appliance still has its

smoke exempt stop in place

In sound condition and provide

sufficient draft (minimum 12Pa

within 3 minutes of ignition) and a

minimum of 22Pa at high output

level

Rear flue installations

The Woodpecker range of stoves is

capable of a rear flue option.

If this is a preferred flueing option, then

careful consideration should be given to

minimising the horizontal length of flue

from the appliance collar to where the

flue-way transitions to vertical.

Building regulation document J states

that a maximum horizontal length of

150mm is permissible, however up to

450mm is acceptable providing that a

flue draft calculation is completed and

approved, by both the manufacture of

the flue components and the appliance

manufacturer in writing.

This documentation must accompany a

Suitable for use with solid fuel

burning appliances

Be able to clean the entire length of

the flue system without removal of

the appliance

Free from deposits

Well insulated

At least 3.5m in height from flue

collar to termination, with no more

than 4 x 45º bends in any one flue

system and have a maximum

horizontal length of no more than

20% of the overall vertical height

The termination should be sited as

to avoid a negative pressure zone

The flue must not be:

Shared with other appliances

Weight bearing on the appliance

A smaller diameter than the

appliance flue collar size (125mm)

successful flue draft test as stated

above and inline with Building

regulations document J.

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Clearances

Clearances to non-

combustible materials

The Woodpecker range of stoves can be

recessed into a suitably sized, non-

combustible fireplace or stood close to

non-combustible materials.

However a permanent free air gap of at

least 50mm is recommended to be left

at each side, 150mm above and at least

50mm at the back of the stove to obtain

reasonable heat output and for access

to the stove for removal, maintenance

and servicing.

A clearance of 150mm to each side will

give a better heat output and facilitate

any remedial works to be undertaken.

For a corner installation the same

guidelines apply but consideration

should be taken to allow the door to fully

open.

To calculate the distance from the glass

to any combustible materials please see

the below combustible material chart.

In accordance with Building Regulations

document J all non-combustible walls

closer than 400mm to the stove should

be at least 75mm thick. Please refer to

Building Regulations document J for all

other stipulations regarding building

structure.

PLEASE SEE TECHNICAL DIAGRAMS OVER THE PAGE SHOWING CLEARANCES TO

COMBUSTIBLE MATERIALS

Clearances to

combustible materials

If using single wall flue pipe, there must

be a clearance of at least 3 times the

diameter of the flue pipe (e.g. 125mm

diameter pipe = 375mm minimum

clearance) from any combustible

materials e.g. wooden beam, this can be

measured using a "line of sight" This

distance may be reduced by using an

appropriate heat shield in line with

Building regulations document J and

maintaining a 12mm air gap between the

shield and the combustible material.

Curtains and soft furnishings should be a

minimum of 1.1m away from the

appliance.

Adequate space should be provided for

servicing the appliance.

Please be mindful of heat transfer to

electronic devices and artwork hung over

the fireplace.

Please remember that this appliance has

been designed to provide heat and if

installed into a recess enough space

should be left around the appliance to

enable the heat produced to rise and

escape from the recess back into the

room.

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