Priority Circuit (Anl 1 To 3) - Samson TROVIS 5474 Mounting And Operating Instructions

Operation with two storage tank sensors SF1 and SF2
The controller begins charging the storage tank when the water temperature measured at sen-
sor SF1 falls below the set point DHW demand ON . The controller stops charging the storage
tank when the water temperature in the storage tank measured at sensor SF2 reaches the value
DHW demand OFF .
The set point Boiler set point for DHW demand determines the set point at sensor VFg.
Functions
Heating circuit with DHW heating
Storage tank sensor SF1
Storage tank sensor SF2
Parameters
Boiler set point for DHW demand
DHW demand ON
DHW demand OFF
Operation with storage tank thermostat
The storage tank thermostat is connected to SF1 and switches the storage tank charging on and
off. The set point Boiler set point for DHW demand must still be predetermined.
Functions
Heating circuit with DHW heating
Storage tank sensor SF1
Storage tank sensor SF2
Parameter
Boiler set point for DHW demand

7.1.1 Priority circuit (Anl 1 to 3)

The DHW heating can be switched with priority over the separate heating circuit 2 or directly
over the heating circuit (heating circuit 3, Pu3).
Heating circuit 2:
During the storage tank charging, the separate heating circuit 2 is placed in reduced operation.
WE Configuration
OFF Co5 -> Fb13 = ON
OFF Co4 -> Fb03 = ON
OFF Co4 -> Fb04 = ON
WE Parameter level / Range of values
65 °C PA4 / 20 to 120 °C
40 °C PA4 / 20 to 90 °C
45 °C PA4 / 20 to 90 °C
WE Configuration
OFF Co4 -> Fb13 = ON
OFF Co4 -> Fb03 = OFF
OFF Co4 -> Fb04 = OFF
WE Parameter level / Range of values
65 °C PA4 / 20 to 120 °C
Functions of the DHW circuit
EB 5474 EN
45