Sime Murelle 25 BF, Инструкции по установке

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4.5 GAS CONVERSION
A kit is supplied complete with the necessary
change-over materials for operation with
butane gas (G30) or propane gas (G31).
Operate in the following manner for changing
over from one gas to another (fig. 30):
–Close the gas cock.
–Slide out the burner unit.
–Replace the main nozzles supplied in a kit
(6), inserting the copper washer (4).
Use a ø 7 spanner to perform this ope-
ration.
–Remove the “GPL-MET” connector link on
the card and set it on “GPL”(4 fig. 21).
–To set the values of maximum and mini-
mum gas pressure, follow the instruc-
tions given in section 4.3, according to
the type of gas valve used.
When the working pressures have
been adjusted, reseal the regulators.
–The gas feed pressure must, under no
circumstances, exceed 50 mbar.
–After have ultimated the conversion of
the boiler, please stick onto the casing
panel the plate showing the relevant fee-
ding gas which is included into the kit.
NOTE: After assembling all the gas connec-
tions, a test for gas tightness must be car-
ried out using soapy water or special pro-
ducts. Do not use naked flames. The conver-
sion to different gas must be carried out
exclusively by authorized technical personnel.
4.6 DISASSEMBLY OF
EXPANSION VESSEL
To disassemble the expansion vessel, pro-
ceed as follows (fig. 31):
–Make sure that the water has been emp-
tied out of the boiler.
–Unscrew the connection (1) and the lock-
nut (5).
–Remove the bracket and the expansion
vessel (4).
NOTE: Before refilling the system, using a
pressure gauge attached to the valve (3)
make sure that the expansion vessel is
preloaded at a pressure of 0.8 to 1 bar.
4.7 REMOVAL OF OUTER CASING
It is possible to completely disassemble the
shell for an easy maintenance of the boiler
following these simple instructions (fig. 32):
–Remove the two screws and bracket (6)
locking the front panel to the sides.
–Pull the front panel forwards so as to
release it from the slot-in pins located on
the sides.
–Unscrew the two screws fixing the instru-
ment panel to the sides.
–Unscrew the four screws fixing the sides
to the instrument panel support.
–Push the sides (3) and (4) upwards, sli-
ding them out of their slots.
90
Fig. 32
KEY
1
Self-tapping screw
2 Rear panel
3 L.H. side panel
4 R.H. side panel
5 Front panel
6 Fixing bracket
Fig. 31
KEY
1
Connection 3/4”
2 Expansion vessel
3 Preloaded valve
4 Fixin bracket
5 Locknut 1/2”
Fig. 30
KEY
1 Swivel connection
2 Locknut 1/2”
3 Burner manifold
4 Washer ø 6.1
5 Burners
6 Nozzle M6
7 Screw
25
20
15
10
8,1 (7.000) 11,6 (10.000) 17,4 (15.000) 23,2 (20.000)
POTENZA TERMICA kW (kcal/h)
PRESSIONE UGELL
O mbar
30
35
5
29,0 (25.000)
25 30
Pressure/heat output diagram for propane gas (G31)
HEAT OUTPUT kW (kcal/h)
N
OZZLE
PRESSURE
mbar
Fig. 29/b
WARNING: To ensure a perfect seal,
always use the washer (4) supplied in the
kit when replacing nozzles, even in burner
units for which it is not specified.