Beretta C.A.I 24 Manual De Instalacion Y Uso página 18

13
.
This boiler is able to operate in different conditions:
CASE A) only heating
CASE B) only heating with external water tank connected,
managed by a thermostat, to prepare domestic hot
water
CASE C) only heating with external water tank connected,
managed by a temperature sensor (kit available upon
request), to prepare domestic hot water.
Heating water ON-OFF-RESET Operating
circuit temperatu- function selector mode button
re selector
Fig. 45
Fig. 46
START-UP AND OPERATION
(R.A.I. - MIX R.S.I.)
INFO Domestic hot water
button temperature selec-
tor (C case only)
Depending on the type of installation selected, it is necessary
to set the parameter "domestic hot water mode". This operation
must be performed by a Technical Service Centre when star-
ting-up the boiler.
Description of commands
Heating water temperature selector: sets the heating water
temperature.
Domestic hot water temperature selector (C case only): sets
the domestic hot water temperature storaged in the water tank.
Setting parameters selector (cases A, B and C): using in
calibration and programmation phase.
Function key:
- ON the boiler is electrically powered and waiting for opera-
ting requests (
- OFF the boiler is electrically powered but will not respond to
operating requests
- RESET resets the boiler following a fault
Operating mode button:
sired operating mode: pressing it, the indicator "function selector"
Setting moves to:
parameters
connected).
selector
Info button: shows a sequence of information concerning the
operating status of the machine.
Description of display symbols
graduated heating water temperature scale with heating
function symbol
graduated domestic hot water temperature scale (shown
in C case only)
domestic hot water function symbol (shown in B and C
cases)
fault symbol (for details, please see page 21)
reset symbol (for details, please see page 21)
pressure value
external sensor connection
heating/domestic hot water temperature (shown in C
case only)
or
fault symbol (e.g. 10 - no fl ame)
function selector (turned to the chosen operating mode:
winter or
burner operating symbol
anti-freeze function active symbol
18
- )
button allows to choose the de-
(winter) or (summer, only if water-tank
summer (only if water-tank connected)