Beretta Ciao C.A.I User Manual

10
caldaie
1.6.6 CH water temperature adjustment
The selection scale is divided into 3 sectors, to be set by
potentiometer located on the left side, under the main knob
(Fig. 1.26).
EXAMPLES OF ADJUSTMENTS
- FIRST SECTOR (Fig. 1.27)
When temperature is set at 44°C, boiler switches off at 44°C +
6°C and switches on again at 44°C - 6°C.
- SECOND SECTOR (Fig. 1.27)
When temperature is set at 56°C, boiler increases automatically
set by 5°C (61°C), after 20 min., by 5°C (66°C) after 20 min.
and sets back to initial value (56°C), after 20 min.
During potentiometer adjustment, when adjustment
level enters this sector, two leds located under the
central knob start flashing at very high frequency for
about 4 sec. (Fig. 1.26).
- THIRD SECTOR (Fig. 1.27)
When temperature is set at 66°C, boiler switches off at 66°C +
6°C and switches on again at 66°C - 6°C.
When required by the room thermostat, each time
the boiler switches of to reach pre-setting levels, re-
ignition will happen only after 3 mins. Then the
boiler will switch on at minimum for 2 mins. only if
the above conditions are respected for each working
sector; after this self-timing phase, the boiler will
work as described in paragraph 1.6.5 p.9.
Timing can be cut off by moving jumper CM1 to Ti-
mer OFF position as shown in figure Fig. 1.28.
1.6.7 Main functions
Pump self-blocking cycle
This function is active when boiler is in « » DHW, «
» CH and OFF modes.
After 24-hour continuous non-operation and 3 hours after last
DHW ignition, the pump is operated for 20 secs.
All request in CH or in DHW mode stoped the actual
function to call the calor request.
Anti-frost cycle
The pump is operated for 15 minutes if DHW temperature is ≤
7°C. If, during these 15 minutes, DHW temperature increases
to exceed 10°C, the pump is stopped, otherwise, after 15
minutes, the pump stops for 2 hours, then the cycle is repeated.
If DHW temperature decreases below 5°C, pump and burner
are switched on to mechanical idling. The cycle is switched off
when DHW temperature is ≥ 30°C. When burner is switched
off, a 30-second post-circulation is activated.
All request in CH or in DHW mode stoped the actual
function to call the calor request.
Fig. 1.26
Fig. 1.27
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Fig. 1.28
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Second
sector
First
sector
Third
sector

Beretta Ciao C.A.I Specifications

General

Brand	Beretta
Model	Ciao C.A.I
Category	Boiler
Language	English