Athena Technologies A88028 Manual Do Utilizador

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2.2.2 PRE-CAST FLUE OF MINIMUM SIZE (Fig. 2)
This fire can be installed into a properly constructed pre-cast 
flue conforming to B.S. 1289 : 1975 or B.S. 1289 : Part 1 : 
1986 or B.S. 1289 : Part 2 : 1989 of at least 3 metres 
effective height and having flueways of at least 198mm by 
67mm or equivalent cross-sectional area with no dimension 
less than 63mm. The fireplace opening width must be 
between a maximum 457mm and a minimum 305mm. The 
fireplace opening height must be between a maximum of 
585mm and a minimum 560mm and a depth of at least 
120mm above the hearth level.
NOTES:
1.
The minimum dimensions for the flat area around the 
opening are 686 mm high x 635 mm wide.
2.
The flue spigot restrictor MUST NOT be fitted.
Ensure that any mortar fangs between the blocks do not 
protrude into the flueways and if raking blocks are used they 
are fitted according to the manufacturers instructions and 
mortar is not allowed to drop down and accumulate in the 
raked portions.
CHECK THE FLUE FOR GOOD DRAUGHT AS DETAILED 
IN SECTION 2.2.1.
5
Fig. 2
PRECAST FLUE INSTALLATION
63
MI
N*
63
MI
N*
6
1
5
 
M
A
X
5
6
0
 
M
I
N
6
1
5
 
M
A
X
5
6
0
 
M
I
N
45
MA
X
30
MI
N
45
MA
X
30
MI
N
12
0m
m
MI
N
12
0m
m
MI
N
6
8
6
 
M
I
N
*
6
8
6
 
M
I
N
*