Installation manual

19
Adjustment trimmer PBC
P4: maximum fan speed P5:fan speed during ignition
P2:minimum fan speed P7: thermo setpoint or k factor setting with external probe present
 DIP switches: the board (see Fig. 4) has 6 DIP switches which can be moved to
create the different operating options listed below:
Dip
-
switch
OFF
ON
RECOMMENDED
SETTINGS
1
High temperature adjustment
using trimmer
Low temperature adjustment
using trimmer
ON
2
Do not use (for R version only) Boiler must be permanently ON OFF
3
External sensor not activated
(not present)
External sensor activated OFF
4
Normal use of remote control Remote control as display OFF
5
free free OFF
6
Heating boiler end remote tank
Heating only (sanitary hot water
deactivated) also DIP 2 ON
ON
N.B. This boiler has two modes functioning, only heating and heating/sanitary with
remote tank. See chapter 2.3 the different boiler configuration for optimal
functioning in the two versions.
2.7 Thermoregulation devices and accessories.
The boiler can be connected to a temperature control system and an external temperature
sensor which must be installed as specified in the instructions.
On/Off room thermostat: make the connection to the TA_A and/or TA_B terminals on the
PCB (Fig. 4) and check that the wire ends leading from the system are not energised
(clean contact). More information on operating of the high/low temperature system is found
in chapter 2.8
External sensor: it can be connected directly to the boiler electrical installation (SE
terminals, Fig. 4) and automatically adjusts the installation maximum flow temperature as
the external temperature changes. When it is connected, the position of DIP switch no. 3
must also be changed. It must be moved from OFF to ON.
With the selector off-summer-winter in Reset and moving the sanitary knob the
characteristic K value (graph in Fig. 5) of the curve appears on the display at “03”. See
Chap. 3 for methods of adjustment.
The external sensor is always on when connected, independently of the presence and
type of programmable thermostat used, or can operate in combination with the Sile
Remote Control code 907520053.
The correlation between the flow temperature TM to the system and external temperature
TE is determined by the position of the trimmer P7 on the PCB (see Fig.4) according to the
curves shown below. For the sake of convenience, you can also use the heating