5
4
INSTALLATION WATER-FILLING
In order to fill the installation, open the filling valve up to the pressure gauge
(5)
indicates a pressure
between 1 and 1.5 bar. Filling is to be carried out slowly and with the automatic air vent open, so that
the installation air will be released. In addition, the other parts of the installation are to be properly
drained by means of the air vent valves fitted for such a purpose. Once the installation has been filled
up, close the filling valve.
NOTE: Switching on the boiler without water could result in serious damage to it.
5
SAFETY LOCKING
The boiler is provided with two types of operating safety locking:
5.1
Temperature safety locking
This locking is indicated by the temperature locked out neon light
(9)
. It will occur every time the
temperature in the boiler exceeds 110º C. The safety thermostat
(1)
built-in button will be pressed
in order to unlock it, once the plug covering this button has been previously loosened.
5.2
Burner locking
This locking is indicated by the burner locked out neon light
(10)
. It is caused by any failure which
could exist in the burner or oil line. To unlock, press the burner lighted push button which becomes
put on
(16)
.
NOTE: If any of these lockings were repetitive, contact the nearest authorised Technical Assistance.
6
BOILER OPERATION
Select the temperature desired in the control thermostat
(2)
and in the room thermostat (if any).
Switch on the boiler setting the main selector
(6)
to "I" position and to "
" position. The burner will
start operating up to the boiler reaches the temperature selected on the control thermostat (it
should be between 60 ºC and 85 ºC). In its turn, the circulating pump will start operating. When the
room temperature is higher than or equal to that rated on the installation room thermostat (if any),
the circulating pump will stop
6.1
Boiler operation with a Sanit hot water tank
The model Sirena Cal HFD can be supplied with a Sanit DHW tank of DOMUSA TEKNIK to install
them in combination, to obtain a high production of DHW. For a correct installation of the tank
follow carefully the installation and operating instructions included with the tank.
The boilers are supplied with an optional heating outlet IC' (see Dimensions) to connect the DHW
tank Sanit to the boiler. To work with the combination of the boiler and Sanit DHW tank, the boiler's
main selector has two different positions, Summer and Winter:
- Summer position
☼
: The boiler will supply, at this position, only DHW, putting on the burner
and the DHW circulating pump (summer pump) up to the tank reaches the temperature
selected on the DHW regulation thermostat, placed on the main board of the tank. When the
temperature selected in the DHW tank is reached, the burner and the summer pump will stop.
- Winter position
: The boiler will be, at this position, capable of heating the DHW tank and
heating installation, giving priority to the DHW production.
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