Bedienungsanleitung Morso 4300 (Seite 14 von 19) (Englisch, Dänisch)

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1.7 Connecting to a brick chimney

Brick a ue bushing securely into the wall, and insert the ue pipe into it. The pipe must not

extend into the actual chimney opening, but only to the inside of the chimney aperture. The

joints between the stove/pipe and pipe/wall bushing must be sealed with glass tape. It is not

normally necessary to seal between any pipe joints.

If the ue pipe transitions from horizontal to vertical, it is a good idea to install it with a gentle

bend so as to avoid any loss of draught.

If you wish the pipe connection to be directed to the rear, with a hammer use light, rm taps

to knock out the iron piece at the top of the convection back panel from the small “bridges”

holding the piece in place.

The ball stop, which is found loose in the ue collar, is not used when tting the pipe connec-

tion directly to the rear.

Adjust and t a 90° angle pipe to the ue collar for directing the pipe further to the rear.

The ue pipe must be dimensioned in accordance with national and local regulations. Morsø

recommends, however, that ue pipes be made of 2 mm sheet steel as this will extend the

service life.

1.8 Connecting to a steel chimney

If your installation involves taking the chimney straight up and through the ceiling, you

must comply with National, Local Building Regulations or ue manufacturers instructions

concerning clearances to combustible materials such as walls, oor joists and ceilings. The

joint between the stove ue collar and the stovepipe must also be sealed using the glass

bre rope provided. It is important that the insulated ue system is properly supported both

at ceiling level and at roof level.

THE STOVE MUST NOT BEAR THE WEIGHT OF THE CHIMNEY SYSTEM (See chimney

manufacturer’s instructions). Excessive weight on the stove will inhibit expansion and could

lead to damage of the stove top. Damage caused to the stove in this way would not be cov-

ered by the manufacturers guarantee.

If a chimney re should occur as a result of incorrect operation of the stove or prolonged

use of wet fuel, close the vents completely and contact the re brigade.

Be aware of the following:

Discuss the cleaning options with your chimney sweep.

If there is insucient draught in the chimney, it may be a good idea to install the

ue pipe straight up so as to minimise smoke migration in the actual combustion

chamber.

Avoid having more bends than necessary, and limit the length of the ue pipe so

as not to reduce the draught.

Fresh air supply

A wood-burning stove requires air for combustion. As a result, ring a wood-burn-

ing stove will help create a healthy climate in your house. If the house is very tightly

sealed, and particularly if there is a cooker hood or ventilation system in the house, it

may be necessary to install an air grate in the room in which the wood-burning stove

is installed. Otherwise there may not be enough draught in the chimney, which may

result in the stove not being able to burn properly, and smoke may come out of the

stove when the re door is opened.

If it is necessary to install air grates, they must be positioned so that they cannot

be obstructed.

Draught

The draught in the chimney is the result of the dierence between the high tempera-

ture in the chimney and the cooler temperature outside. Other factors that determine

whether sucient negative pressure can be produced to create a draught include the

length and insulation of the chimney, and wind and weather conditions.

The draught will be reduced when:

- The temperature dierence is too low, e.g. in connection with a poorly insu-

lated chimney.

If the chimney is cold, it may help to light (burn up) a rolled-up newspaper in

the chimney’s cleaning door.

- The outside temperature is too high, e.g. during the summer.

- There is no wind.

- The chimney is not tall enough, with the result that it sits in the lee of the roof

surface or tall trees.

These conditions are also associated with the greatest risk of smoke coming

back down the chimney.

- Air is entering the chimney in undesired places, e.g. through cracked joints or

leaks in the cleaning door or the ue pipe.

- Unsealed, unused replaces are connected to the chimney.

- The ue pipe and chimney are clogged up with soot due to inadequate cleaning.

- The house is too tightly sealed (please see the section on Fresh air supply).

A good draught is achieved when:

- There is a big dierence between the temperature in the chimney and outside,

i.e. when the need for heating is greatest.

- The weather is clear and there is a good wind.

- The chimney is of the proper height, i.e. Minimum 4 metres above the stove,

and clear of the spine of the roof.

1.9 Draught

If smoke comes out of the stove when the re door is opened, it will be due to the poor draught

in the chimney. This type of stove requires at least 12 PA of chimney draught to achieve satis-

factory combustion and to prevent smoke from escaping. Smoke may, however, escape in any

event if the stove door is opened during vigorous ring, so this should be avoided.

The ue gas temperature at the rated output is 211°C relative to 20°C.

If in doubt, you may want to get your chimney sweep to measure the draught in the chimney.

Morso 4300 Seite 14

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