2.12
ASSEMBLY OF GAS UNIT
To assemble the gas unit, which comes
supplied in a separate cardboard
package, first remove the half pipe
union that is on the unit and screw it to
the bent pipe connected to the burner
manifold (fig. 11). Then insert the sen-
sors of the instruments into their
sheath, as described in section 2.11.
IMPORTANT: To ensure correct boiler
temperature control, the bulbs of
control and safety components must
be inserted in the sheath on the side
where the C.H. flow/return connec-
tions are located.
If the C.H. flow/return connections
have been moved to the left side of
the generator, the gas/control panel
assembly must be moved onto the
left side as well to permit this
arrangement.
Unwind the wires of the two sensors,
getting them to pass through the bush
provided on the front panel (6 fig. 11)
and through the gland on the lower
front wall (11 fig. 10). Insert the ignition
electrode in the hole between the head
and the intermediate section, on the
same side as the gas unit, fastening it to
the two stud bolts (fig. 12). Repeat the
same operation for the sensing electro-
de, which will fit in the hole provided
between the head and the intermediate
section at the other end of the body.
NOTE: Take the utmost care when
assembling the two electrodes, so as
not to break the ceramic coating,
which otherwise would require imme-
diate replacement of the electrode.
After assembly, all the gas connections
must be tested for tightness using
soapy water or appropriate products.
DO NOT USE NAKED FLAMES.
2.13
ELECTRICAL CONNECTION
Electric power supply must reach the
54
KEY
1 Electric control board
2 Gas valve
3 Pressure intake
4 Gas pressure switch
5 Bulb of the instruments
6 Bush for electrode wires
7 Second gas solenoid valve
8 R.H. sheath
Fig. 11
KEY
1 Ignition electrode
2 Stud bolt M5 x 15
3 Washer ø 5,3
4 Nut M5 OT
5 R.H. head
6 Intermediate section with boss
Fig. 12
KEY
1 Front and rear support
of casing base
2 R.H. support of casing base
3 L.H. support of casing base
4 L.H. side lower rear panel
5 L.H. side upper rear panel
6 L.H. side front panel
7 R.H. side lower rear panel
8 R.H. side upper rear panel
9 R.H. side front panel
10 Cover
11 Lower front wall
12 Upper front wall (cleaning plate)
13 Rear wall
14 Base strip
15 Door
16 Upper front panel
NOTA: The position of the panels (6)
and (9) can be reversed; make sure,
however, that the panel with slits is
always placed on the side where the
gas unit comes out.
Fig. 10
Summary of Contents for RS 10
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