Application 1
EI.65.D4.02
42
System diagram 1B
Heat circuit with direct connection to the district heating network and mixing via
by-pass valve. Hot water tank with continuous control of tank temperature.
Heat circuit The motor valve M1 controls the flow temperature, which is measured by the sen-
sor S1. The return temperature measured by the sensor S2 can be limited. The cir-
culation pump P1 is running when the reference flow temperature is above 20 °C
or the outdoor temperature is below 2 °C.
Hot-water circuit The motor valve M2 controls the storage tank temperature, which is measured by
the sensor S4. The return temperature measured by the sensor S5 can be limited.
The circulation pump P2 is controlled according to the 7-day program.
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