2.3 CONNECTING UP SYSTEM
To protect the heat exchanger from being
damaged by corrosion, incrustation or
deposits, after installation it is extremely
important to clean the system using suita-
ble products Sime Ltd recommend only the
use of FERNOX products for the flushing
and final treatment of the system water..
This is particularly important in hard water
areas.
Artificially softened water must not be
used to fill the heating system. It is impor-
tant to check the concentration of the inhi-
bitor after each system modification and
during maintenance following the manufac-
turer’s instructions (specific tests are avai-
lable at your dealer).
The safety valve drain must be connected
to a collection funnel to collect any dischar-
ge during interventions.
WARNING: Failure to clean or adequately
treat the heating system could invalidate
the warranty.
Gas connections must be made in accor-
dance with current standards and regula-
tions. When dimensioning gas pipes from
the meter to the module, both capacity
volume (consumption) in m3/h and gas
density must be taken into account.
The sections of the piping making up the
system must be such as to guarantee a sup-
ply of gas sufficient to cover the maximum
available output of the boiler, limiting pressu-
re loss between the gas meter and any appa-
ratus being used to not greater than:
– 1.0 mbar for family II gases (natural gas);
– 2.0 mbar for family III gases (butane or
propane).
A sticker inside the module includes identifi-
cation and gas type data specific to the
module.
2.3.1 Condensation drain installation
A siphoned drain must be connected to the
civil drain by a pipe with minimum 5 mm
per meter gradient for condensation collec-
tion.
Only normal plastic civil drain pipes are
suitable to convey condensation to the
building's sewer drain.
2.3.2 Gas pipe filter
The gas valve is fitted with a standard filter.
This filter is not capable of filtering all impu-
rities and to prevent poor gas valve opera-
tion or failure of any gas valve safety featu-
re, it is advisable to fit a suitable filter on
the gas supply pipe.
2.4 FILLING THE SYSTEM
Cold system filling pressure must be 1 bar.
The system must be filled slowly so that air
bubbles are released through the specific
escapes.
2.5 EXHAUST
The boiler is supplied with a 80mm gasket,
which must be fitted over the exhaust ter-
minal prior to the flue being installed. (11
fig. 4 - 4/a - 4/b).
The flue should be fitted and terminated in
accordance with BS 6644, IGE/UP/!0
part 1, Edition 2, BS5440 -1 and the clean
air act as applicable.
2.5.1 Type B (fig. 4)
If the inlet is not connected, the boiler
should be regarded a Class B device. When
installing the boiler in locations where it
needs to be protected from water, replace
the intake terminal inserted in the flange
with terminal code 8089510. For informa-
tion on how to configure the boiler in this
mode see figure 4.
The maximum overall length of ø 80
exhaust flues is determined by the load
losses of the single accessories installed
and should not exceed 16 mmH2O (“60
BFR”) and 28 mmH2O (“100 BFR”).
2.5.2 Type C (fig. 4/a - fig. 4/b)
The boiler becomes a Class C device when
the intake terminal is removed from the
flange and the intake is connected to sepa-
rate exhaust ducts (fig. 4/a) or with coaxial
exhaust (fig. 4/b).
ø 80 ACCESSORY LOAD LOSS TABLE
WARNING: Before installing accessories, lubricate
the internal part of gaskets with silicon-based pro-
ducts. Avoid using oils and greases.
KEY
1 90° MF polypropylene curve (6 pcs.) code 8077450
2 a Polypropylene extension L.1000 (6 pcs.) code 8077351
2 b Polypropylene extension L. 500 (6 pcs.) code. 8077350
3 Articulated tile code 8091300
4 Roof terminal kit L. 1285 code 8091212A
5 Polypropylene extension L. 250
with test outlet code 6296513
6 45° MF polypropylene curve (6 pcs.) code. 8077451
7 Exhaust terminal code 8089501
8 Internal-external ring nut kit code 8091500
11 Rubber gasket ø 80 (supplied as standard)
Load loss (mm H2O)
“60 BFR” “100 BFR”
90° MF polypropylene curve 1.30 3.00
45° MF polypropylene curve 0.70 2.00
Polypropylene extension L. 1000 0.60 1.20
Polypropylene extension L. 500 0.30 0.60
Roof exit terminal L. 1381 1.20 4.30
Exhaust terminal 1.30 3.60
Polypropylene extension L. 250 0.15 0.30
Type B
Fig. 4
min. 600
10
