35
b
In the case of low temperature systems, select a
temperature between 20°C and 45°C. By setting the
"low temperature" type system, the maximum deliv-
ery temperature setting will be limited to 50°C (Par.
23=T_CH_Low_limit).
b
Changing the delivery temperature involves chang-
ing the climatic curve (see the “Heat control setting”).
This change may only be made by Technical Assis-
tance Centre.
If the system is connected to a boiler, set parameter 6 (pre-
set to 0=no DHW service). To do so, access the “Installer
programming” mode and set parameter 6 to:
- 2 = for a boiler with a sensor
- 6 = for a boiler with a thermostat.
Also set parameter 9 (DHW_Priority) to 2 to have absolute
priority.
If the boiler is equipped with an NTC sensor, the required
temperature can be set from the display between 10°C and
50°C.
If the boiler is equipped with a thermostat, the required
temperature is set directly on the boiler, whereas parameter
3 must be left at 50°C.
- Press the button two times: the domestic hot wa-
ter temperature will be displayed, preceded by the
symbol “3”
- press
“Set/esc”
: the relative setpoint is displayed and
the two digits to the right will flash. To change this
value press or . To confirm, press
“OK”
.
The system will turn on in DHW mode until the demand is
satisfied.
When the modular system is in stand-by, the Master unit
display will be in DISPLAY mode and the three digits will be
“1” followed by the delivery temperature. The green LED
(4) will flash.
4
Refer to the “DISPLAY mode” chapter for more information
about the system display types.
If there are any ignition or operating faults in any heating
element, the control panel display will start to flash and the
red LED (5) will turn on.
5
There are two types of errors:
- Type A errors, which can only be turned off by press-
ing the RESET button
- Type E errors, which turn off when the cause that de-
termined them has disappeared (see the "ERROR
mode" chapter and the "Fault code" chapter).
3 2 Checks during and after initial
start-up
After start-up, check that the
Power Plus Box
system is car-
rying out the following correctly:
- the start-up and subsequent shut-off procedures,
closing the zone thermostat contacts
- display of the DHW temperature (only with a boiler in-
stalled) and the heating temperature by pressing the
button two times.
If a boiler is installed, check that parameter "6” is set
correctly (2 = boiler with sensor; 6 = boiler with thermo-
stat) and that operation is correct by opening the hot
water tap.