Sime DUETTO 20 OF, Инструкции по установке

Страница: 75 / 148

2.6 HEATER UNIT
In “SOLO 20-30 OF/BF” models, the
heater unit comes on with the consen-
sus of the burner, after a delay of a
maximum of 90 seconds required to
bring fuel in the nozzle holder area up
to a temperature of 65°C. Once this
temperature has been reached, the
thermostat, which is located above
the preheater (1 fig. 15/b), will give
consensus for the burner to start.
The heater will remain on for as long
as the burner stays on and go of f
when the burne goes off.
The “DUETTO 20-30 OF/30 BF”
model has a lower power heater which
remains on all the time after the main
switch is turned on in the control panel
in winter only. The first time it is turned
on at the beginning of the season, it
may be difficult for the burner to come
on, and the boiler may stop working if
the operating cycle is begun before te
correct fuel temperature has been
reached.
When it is started again, enough time
will have passed (2 - 3 minutes) for the
fuel to have reached the correct tem-
perature for start-up.
“ S O L O 4 0 O F / B F - D U E T T O 4 0
OF/BF” model have no heater unit, as
it is not required.
2.7 ELECTRICAL CONNECTION
The boiler is supplied with an electric
cable and the electric power supply to
the boiler must be 230V-50Hz single-
phase through a fused main switch.
The stat cable, whose installation is
compulsor y for obt aining a better
adjustment of the room temperature,
must be connected as shown in fig. 9 -
9/a.
NOTE:
Device must be connected to an effi-
cient earthing system.
SIME declines all responsibility for
i n j u r y o r d a m a g e t o p e r s o n s
resulting from the failure to pro-
vide for proper ear thing of the
appliance.
Always turn off the power supply
before doing any work on the electri-
cal panel.
73
1
2
5
6
7
RESET
TWICE
ONLY
12
1
2
3
bar
KEY
1 Gas-oil pump
2 Pressure gauche intake
3 Pressure adjustment screw
Fig. 8
Fig. 8/a