Installation; Boiler Room; Boiler Room Dimensions; Connecting Up System - Sime AR Serie Manuel D'utilisation

2

INSTALLATION

2. 1

BOILER ROOM

The boiler room should feature all the
characteristics required by standards
governing liquid fuel heating systems.
2.2

BOILER ROOM DIMENSIONS

Position the boiler body on the founda-
tion bed, which should be at least 10
cm high. The body should rest on a
surface allowing shifting, possibly by
means of sheet metal.
Leave a clearance between the boiler
and the wall of at least 0.60 m, and
between the top of the casing and the
ceiling of 1 m (0.50 m in the case of
boilers with incorporated D.H.W. tank).
The ceiling height of the boiler room
should be less than 2.5 m.
2.3

CONNECTING UP SYSTEM

When connecting up the water supply
to the boiler, make sure that the speci-
fications given in fig. 1 are observed.
Make connections with rigid unions or
flexible steel hoses that do not place
the unit under strain. All connecting
unions should be easy to disconnect by
means of tightening rings.
2.3. 1 Filling the water system
Before connecting the boiler, thorou-
ghly flush the system to eliminate
scale which could damage t he
appliance.
Filling must be done slowly so as to
allow any air bubbles to be bled off
through the air valves.
In closed-circuit heating systems, the
cold water filling pressure and the pre-
charging pressure of the expansion
vessel should be no less than or equal
to the height of the water head of the
installation (e.g. for water head of 5
metres, the vessel pre-charging pres-
sure and installation filling pressure
should be at least 0.5 bar).
2.3.2 Water system
characteristics
THE WATER USED FOR THE CENTRAL
HEATING SYSTEM SHOULD BE TREA-
TED IN THE FOLLOWING CASES:
– For extensive systems (with high
contents of water).
– Frequent addition of water into the
system.
– Should it be necessary to empty the
system either partially or totally.
2.4

CONNECTING UP FLUE

The flue is of fundamental importance
for the proper operation of the boiler;
if not installed in compliance with the
standards, starting the boiler will be
difficult and there will be a consequent
formation of soot, condensate and
encrustation.
The flue used to expel combustion pro-
ducts into the atmosphere must meet
the following requirements:
– be constructed with waterproof
materials, and resistant to smoke
temperature and condensate;
– be of adequate mechanical resilien-
ce and of low heat conductivity;
– be perfectly sealed to prevent coo-
ling of the flue itself;
– be as vertical as possible; the termi-
nal section of the flue must be fitted
with a static exhaust device that
ensures const ant and ef ficient
extraction of products generated by
combustion;
– to prevent the wind from creating
pressure zones around the chimney
top greater than the uplift force of
combustion gases, the exhaust
outlet should be at least 0.4 m
higher than structures adjacent to
the stack (including the roof top)
within 8 m;
– have a diameter that is not inferior
to that of the boiler union: square or
rectangular-section flues should
have an internal section 10% grea-
ter than that of the boiler union;
– the useful section of the flue must
conform to the following formula:
P
S = K
√H
S resulting section in cm
K reduction coefficient for liquid
fuels:
– 0.045 for firewood
– 0.030 for coal
– 0.024 for light oil
– 0.016 for gas
P boiler input in kcal/h
H height of flue in metres, measu-
red from the flame axis to the
top of the flue reduced by:
– 0.50 m for each change of
direction of the connection
union between boiler and flue;
– 1.00 m for each metre of
union itself.
2.5

FITTING THE CASING

The casing and the control panel are
supplied in separate cardboard packa-
ge. The housing package also contains
the boiler documents and the glass
wool for insulating the cast iron body. To
fit the casing, proceed as follows (fig. 3):
– Remove the four screws, then the
burner plate.
– Position the glass wool (2), secure
the front panel (3) with the nuts sup-
2
Fig. 3
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