3
2
CONTROL COMPONENTS
3
bar
2
1
4
5
6
7
8
9
10
t
1.
Safety thermostat:
It ensures that the boiler temperature does not
exceed 110 ºC by locking its operation.
2. Control thermostat.
You will be able to, by means of this element,
select the heating working temperature,
stopping the burner when the boiler
temperature reaches that selected or keeping it
running as long as the temperature is lower
than that pre-set.
3. Thermometer:
It indicates the boiler water temperature.
4.
Timer Optional):
It is an optional element capable of operating
in a weekly or daily basis, allowing the
switching ON/OFF cycles of the boiler to be
selected.
5.
Pressure gauge
It indicates the installation pressure.
6.
Main selector:
It allows the boiler to be switched on and off by
pushing "O/I" button.
7. Pilot Summer:
When lit, it indicates that the service is selected
Summer (A.C.S. only).
8. Pilot Winter:
When lit, it indicates that the service is selected
Winter (h A.C.S.).
9. Blocked due to temperature pilot light:
When lit, it indicates that the boiler operation
has been blocked due to excessive
temperature (higher than 110ºC).
10. Burner blocked pilot light:
When lit, it indicates that the boiler operation
has been blocked due to blocking of the
burner.
Summary of Contents for SIRENA CAL HFD
Page 1: ...INSTALLATION AND OPERATING INSTRUCTIONS SIRENA CAL HFD ER 0170 1996 CGM 04 392 ...
Page 28: ...Sirena Cal HFD 26 NOTES ...
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