Bedienungsanleitung Thermocet Coventry S (Seite 12 von 26) (Englisch)

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Page 12

F. Adjustable wall bracket N. Roofing sheet, sloping at 5-30°

G. Concentric pipe O. Roof pass-through

H. Universal mounting plate P. Lead roof plate 20-45°

12.1 Possibilities for connecting concentric flue system

Indirect wall pass through (see page 23 diagrams 1 and 2).

Always fit a length of X=1 metre vertical on the apparatus and then directly after this a bend of 90° with a length

Y (min) wall pass through on this. If required the horizontal part can be extended to 5 metres plus wall pass

through (Y max) .

Note: For propane appliances 4metres plus wall pass through applies (Y max).

This horizontal slope must never

be exceeded.

Roof pass through without slope ( see page 23 diagram 3).

You can use a direct pipe layout without a slope for a maximum length of X=12 metres (excluding the roof vent

flange) measured from the connection on the unit. The minimum length is 2 metres. You can have a flue terminal

at every position on the roof face (both flat and sloping); the flue tube and combustion air supply are located in

the same pressure area. For 2 metres and longer a restriction plate must be used for all gas types.

Roof pass through with slope 45° ( see page 23 diagram 4).

Always fit a length of X=1 metre vertically on the unit. Next, continue building up the flue pipe using 2 45º

bends (the calculation length for each bend is 1 metre) until you have reached the maximum pipe length of 12

metres (including bends excluding roof pass through). The minimum length is 2 metres. You can have a flue ter-

minal at every position on the roof face (both flat and sloping); the flue tube and combustion air supply are lo-

cated in the same pressure area. For 2 metres and longer a restriction plate must be used for all gas types.

Roof pass through with slope 90° ( see page 23 diagram 5).

Always fit a length of X=2 metres vertically on the unit. Next, continue building up the flue pipe using 2 90°

bends (the calculation length for each bend is 2 metres) until you have reached the maximum pipe length of 12

metres (including bends, excluding roof pass through). The minimum length is 3 metres. You can have a flue ter-

minal at every position on the roof face (both flat and sloping); the flue tube and combustion air supply are lo-

cated in the same pressure area. Take into account a maximum horizontal layout of Y=4 metres (measured be-

tween bends) and also ensure sufficient gradient. For 2 metres and longer a restriction plate must be used for all

gas types.

12.2 Construction of concentric flue system

Assembly instructions are given below:

Mounting using an exterior wall duct

The outlet can also be installed above the exhaust in the wall (always one metre vertical first), take into account

obstacles according to environment. The (local) Building Regulations will provide the required guidelines in re-

lation to this matter. Also, ensure that the wind pressure on the flue terminal here is not too extreme either (for

example, in very narrow lanes or alleys) since this may negatively influence the unit efficiency. Provide a recess

in the exterior wall with of around 155 mm (in a flammable wall have 50mm of extra space round the outer pipe)

and fix the wall pass through with the wall plate to the inner side of the wall. The wall plate of the exterior wall

duct must be sealed sufficiently against the wall on the outside; this is in connection to there being leaks of mois-

ture and/or flue gas into the living space. The flue should be cased if necessary. Sufficient fireproof measures

must also be taken when the flue is being mounted along flammable materials. Determine the position of the ap-

paratus and the outlet and begin the construction of the flue with the connection on the apparatus, pay attention to

the direction of installation. The inner flue must be installed for draining. Connect the elements by using clamp-

ing straps. Fit a bend of 90° directly on the wall pass through and make the connection with the elements on the

apparatus. Ensure that the gastightness of all connections is correct. A fitted pipe can be used in between the

bends or when making the connection to the unit. If necessary use wall brackets to support the flue. Provide a re-

cess in the exterior wall of around 155 mm (in a flammable wall have 50mm of extra space round the outer pipe)

and fix the wall pass through with the wall plate to the inner side of the wall. The wall plate of the exterior wall

duct must be sealed sufficiently against the wall on the outside; this is in connection to there being leaks of mois-

ture and/or flue gas into the living space.

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