PL-090B_f. 9
Connection of external control signals
FN MA RT Tcyl TosTr
Tr
Tos
FN
MA
RT
Tcyl
Do not connect any voltage into FN, MA, RT, Tcyl, Tos, Tr entries!
This can result in permanent controller damage.
!
entry
symbol function
FN External forcing of temperature change or work algorithm [Conguration> FN entry].
MA
In order to limit the power used, i.e. the boiler can cooperate with other appliances such
as an electric water heater. In order to do so, an electrician should install in line an extra
open contact to the MA entry, so that when a master appliance gets on, the contact
opens, and the boiler switches off- it results in heating blockage and pump’s standstill.
RT
Optional control of the boiler’s operation with an external temperature regulator. Entrance
RT must be activated [Conguration> Room temperature> Temp. sensor RT], short circuit
voltage-free contact will turn on the heating of the CH system.
In case of activation of the RT input, the built in functions of timer and room regulator
will not be available.
Tcyl
DHW cylinder temperature sensor. Optionally, it can be replaced with an external contact
thermostat. To do this, activate the external DHW thermostat.
[Conguration> Hot water > Regulation> Outside]. Short circuit of the Tcyl input will result
in switching on the DHW cylinder heating. When an external DHW regulator is activated.,
the built-in functions of timer and temperature regulator will not be available.
Tos Outside temperature sensor (Tos). It should be installed in a shaded place, on the
north or north-west facade of the building, away from windows and ventilators.
Tr Room temperature sensor (Tr). It should be installed in a representative location of the
facility, away from heaters, windows, doors and communication routes.
