Installation; Boiler Room; Boiler Room Dimensions; Connecting Up System - Sime RONDO'/ESTELLE 8 Instrucciones De Instalación Y Mantenimiento

2

INSTALLATION

ATTENTION: Before performing any work on the boiler, make sure that the same and its components have
cooled in order to prevent the risk of burns due to high temperatures.
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 boil-
ers with incorporated D.H.W. tank). The
ceiling height of the boiler room should
not 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.
All connecting unions should be easy to
disconnect by means of tightening rings.
A closed expansion tank system must
be used.
2.3.1 Filling the water system
Before connecting the boiler, thorough-
ly flush the system to eliminate scale
which could damage the appliance.
Filling must be done slowly 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 ves-
sel should be no less than or equal to the
height of the water head of the instal-
lation (e.g. for water head of 5 meters,
the vessel pre-charging pressure and
installation filling pressure should be at
least 0.5 bar).
2.3.2 Characteristics of feedwater
Water supplying the heating circuit must
be treated in accordance with UNI-CTI
8065 standards. It is absolutely essential
to treat water in the heating system in the
following cases:
– For extensive systems (with high con-
tents of water).
– Frequent addition of water into the sys-
tem.
– Should it be necessary to empty the
system either partially or totally.
46
2.3.3 D.H.W. storage tank
The RONDÒ -ESTELLE ErP BE boilers
may be matched with the separate boiler
units.
The glass enamelled D.H.W. storage
tank comes with a magnesium anode
to protect the boiler and an inspection
flange for checking and cleaning.
The magnesium anode must be checked
annually and replaced if it is worn.
Fit a safety valve calibrated to 6 bar on
the tubing of the cold water supply to the
boiler unit (12 fig. 2).
n case the system pressure is excessive
fit an appropriate pressure reducer. If
the safety valve calibrated to 6 bar fre-
quently intercepts, fit an expansion ves-
sel with a capacity of 8 litres and a maxi-
mum pressure of 8 bar (11 fig. 2). The
tank should be of the membrane type,
made of natural rubber "caoutchouc",
which is suitable for foods.
2.4 SMOKE EXHAUST
2.4.1 Connecting up flue
The flue is of fundamental importance for
the proper operation of the boiler; if not
installed in compliance with the stand-
ards, starting the boiler will be difficult
and there will be a consequent formation
of soot, condensate and encrustation.
The flue used to expel combustion prod-
ucts into the atmosphere must meet the
following requirements:
– be constructed with waterproof mate-
rials, and resistant to smoke tempera-
ture and condensate;
– be of adequate mechanical resilience
and of low heat conductivity;
– be perfectly sealed to prevent cooling
of the flue itself;
– be as vertical as possible; the terminal
section of the flue must be fitted with
a static exhaust device that ensures
constant and efficient 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 out-
let 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% greater 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 2
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 meters, measured
from the flame axis to the top of
the flue reduced by:
– 0.50 m for each change of direc-
tion of the connection union
between boiler and flue;
– 1.00 m for each metre of union
itself.
Our boilers do not need any particular
connections other than the one to the
flue as described above.
2.4.2 Smoke exhaust with
ø 80/125 coaxial flue
(fig. 4/a)
Our boilers RONDO'-ESTELLE ErP BE
are set to be connected to ø 80/125
stainless steel coaxial flues that can be
adjusted to the most suitable direction
for room requirements (fig. 4/a).
The maximum acceptable length of the
flue must not be over 7.0 equivalent
meters.
Load losses in meters for each single
accessory to be used in the exhaust
configuration are indicated in Table A.
Only use original SIME accessories and
make sure that connections are correct
as indicated in the instructions supplied
with the accessories.
2.5 FITTING THE CASING "RONDÒ"
(fig. 5)
The casing and the control panel are
supplied in separate cardboard pack-
ages.
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. 5):
– fit the lower front (1) and back (2) bra-
ckets to the heads with the four TE
screws supplied;
– insert the upper bracket (5) fixing it to
the front head with the two TE screws.
– insulate the cast iron body with glass
wool, fixing it with the two springs sup-
plied;
– assemble the panel (11) making sure
that the TE screws are already fitted on
the combustion chamber door.
– fit the left side (3) and the right side (4)
by inserting them in the tangs on the