Samson TROVIS 5400 Series Mounting And Operating Instructions page 22

D) Summertime operation or switched off operation
A drinking water requirement leads to an immediate buildup of the charging temperature via
the storage tank, i.e. the SLP is switched on. The ZP runs according to the function block setting.
If CO2 FB 8 = ON, then the SLP is only switched on when the temperature at sensor RüF is higher
than the temperature at sensor SF1.
When the requirement is terminated the control valve is closed. While the control valve is clo-
sing, the flow temperature is monitored at sensor VF. If this is reduced down to a fixed definable
value, at the latest however after two running periods of the control valve, the UP is switched on
and the SLP is switched off. The ZP runs according to a time program.
System code number 2 with changeover valve CO2 FB 6 = ON selection: 2
(changeover valve)
VL RL
Figure 9 ⋅ Anl 2 (System 2) Weather-sensitive flow temperature regulator with variable re-
turn flow temperature limiting and heating up of drinking water in the storage tank system
with changeover valve
Processing heating up of drinking water in the storage tank system with changeover valve
A) The temperature at the flow sensor is higher than the charging temperature setpoint value
If the temperature in the storage tank falls below the value for drinking water requirement ON at
sensor SF1 or if the temperature falls below the value set at the storage tank thermostat, com-
mencement of storage tank charging initially only leads to a reduction of the excessive flow tem-
perature via the heating loop.
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VF
RüF
M
M
UP
SF1
AF
WW
ZP
Zirk.
KW