3
CHARACTERISTICS
3. 1
COMBUSTION CHAMBER
DIMENSIONS
The combustion chamber is a direct
passage type and is conform to the pr
EN 303-3 standard annex E.
The dimensions are shown in fig. 8.
An adequat e pr o t ection panel is
mounted on the inside wall of the rear
head of all the models.
L
mm
SOLO 20
277
SOLO 30
377
DUETTO 30
377
AQUA 30
377
SOLO 40
477
AQUA 40
477
3.2
HEATING PUMP
CHARACTERISTICS
The characteristics of the pump sys-
tem installed on the thermal gas-oil
group are shown in fig. 9.
4
USE AND MAINTENANCE
4. 1
TIMER PROGRAMMER
(optional)
The control panel allows the use of a
timer supplied in kit f or m upon
request, complete with mounting
instructions (fig. 10).
Make t he electr ic connection as
shown in point 2.6 eliminating the boil-
er junction-box.
REMOVE
Fig. 10
70
Volume
m
3
0,013109
0,019028
0,019028
0,019028
0,024947
0,024947
4.2
TANK MAINTENANCE
The preparation of hot treated water
in the "AQUA" version is guaranteed
by a heater in porcelain glass, com-
plete with magnesium anode for pro-
tecting the heater and inspection
flange for control and cleaning.
The magnesium anode should be
periodically controlled and substitut-
ed whenever worn out.
B (D.H.W.)
AB
A (Heating)
A (Risc.)
4.3
REPLACING THE SWITCH
VALVE ACTUATOR
To remove the switch valve actuator,
follow these instructions (fig. 11):
– Switch off the power supply.
– Disconnect the Molex connector.
– Push the button (1) while simultane-
ously turning the actuator anticlock-
wise to remove it from the valve body.
– To reassemble the actuator, perform
the same procedure in reverse.
B (San.)
Fig. 8
Fig. 9
2
1
Fig. 11