20
Inspections and maintenance performed
professionally and according to a regular
schedule, as well as the use of original
spare parts, are of the utmost importance
for fault-free operation of the boiler and
to guarantee its long life.
The maintenance frequency must comply
with the applicable standards in force.
4
sOLAR CONTROL UNIT MAINTENANCE
AND INsPECTIONs
Failure to perform Inspections and Main-
tenance can entail material and personal
damage
KEY
No.
Solar collector temperature LED (red)
A
Cylinder temperature LED (green)
B
Temperature bar (approx. every 4 sec.)
C
Connected integration pump outlet
D
Connected collector pump outlet
E
Connected collector pump activation/
deactivation
L
Manual pump activation/deactivation
M
ON/OFF switch
H
Collector and cylinder temp. differential
knob
N
Integration knob
GENERAL
The solar control unit has been designed to manage
the temperature differential between the collector
and the water cylinder and to trigger the boiler
operation (if the function has been enabled) when
the temperature in the cylinder is below the set
integration temperature.
The antifreeze function can be set, on 3 levels,
using a selector situated near the terminal board.
Using a LED bar, the control unit displays the tem-
perature value of the cylinder and of the collector
and the activation/deactivation of the collector and
integration pump.
swITCHING ON AND OFF
The
switch with indicator light allows
you to switch the solar control unit on
and off.
If the switch is set to “
O’’,
the control
unit is turned off; all the outputs are
deactivated and the manual pump com-
mand cannot be activated.
If the switch is set to
“I’’
, the control unit
is turned on in automatic mode (normal
control unit operation)
TEMPERATURE DIsPLAY
The control unit will normally show
alternately the temperature of the col-
lector
(red, symbol illuminated) and
the temperature of the cylinder (green,
symbol
illuminated) on the LED
bar - approximately every 4 seconds.
The temperature indicated by the
LED bar ranges from 20 to 130°C in
10°-steps.
MANUAL OPERATION
Use the switch with indicator light to
activate or deactivate the manual op-
eration of the pump.
If the switch is set to
“I’’
, the collector
pump will always be active irrespective
of the temperatures measured; this
function can only be activated if the
switch with indicator light is set to
“I’’.
If the switch is set to
“O’’
, the control
unit will activate the collector pump in
automatic mode.