Sime MURELLE HM, Manual

Page: 93 / 120

93
ES
PT
ENG
When the boiler runs at low temperature,
it is possible to use standard flues provided
that:
- The flue is not be used by other boilers.
- The interior of the flue is protected to
prevent a direct contact with condensa-
tion from the boiler. The products of
combustion must be conveyed through a
flexible or rigid plastic pipe around 100
to 150 mm in diameter, and condensa-
tion must be siphoned off at the foot of
the pipe. The usable height of the water
trap must be at least 150 mm.
2.7 FORCED EXHAUST
TYPE B23P-B53P (fig. 9/a)
This type of exhaust pipe is installed using
the special kit, code 8089912/13. For kit
assembly instructions, refer to point 2.6.
Protect the intake with the optional acces-
sory, code 8089501.
The accessory is assembled by cutting a 50
mm long segment from an ordinary ø 80
extension and inserting it on the air intake,
on which the accessory is then fitted,
anchored to the pipe segment with the
screws provided (fig. 9/a).
Maximum flow resistance must be no
more than 15 mm H
2
O (ATTENTION: the
total length of each pipe should not
exceed 50 m, even if the total loss is
below the maximum applicable loss.)
As the maximum pipe length is determined
by adding up the flow resistance of the
various individual accessories installed,
refer to
Table 1-1/a for calculation.
2.8 POSITIONING THE
OUTLET TERMINALS (fig. 10)
The outlet terminals for forced-draught
appliances may be located in the external
perimeter walls of the building.
To provide some indications of possible solu-
tions,
Table 3 gives the minimum distances
to be observed, with reference to the type
of building shown in fig. 10.
2.9 ELECTRICAL CONNECTION
The boiler is supplied with an electric cable.
Should this require replacement, it must be
Fig. 10
TABLE 3
Siting of terminal Appliances from 7 to 35 kW
(distances in mm)
A - below openable window 600
B - below ventilation opening 600
C - below eaves 300
D - below balcony (1) 300
E - from adjacent window 400
F - from adjacent ventilation opening 600
G - from horizontal or vertical soil or drain pipes (2) 300
H - from corner of building 300
I - from recess in building 300
L - from ground level or other treadable surface 2500
M - between two terminals set vertically 1500
N - between two terminals set horizontally 1000
O - from a surface facing without openings or terminals 2000
P - as above but with openings and terminals
3000
1) Terminals below a practicable balcony must be located in
such a way that the total path of the smoke from its outlet
point from the terminal to its outlet point from the external
perimeter of the balcony, including the height of possible rai-
lings, is not less than 2000 mm.
2) When siting terminals, where materials that may be subject
to the action of the combustion products are present in the
vicinity, e.g., eaves, gutters and downspouts painted or made
of plastic material, projecting timberwork, etc., distances of
not less than 1500 mm must be adopted, unless adequate
shielding is provided to guard these materials.
50
cod. 8089501
Fig. 9/a