Application 10
EI.65.D4.02
78
6.3.11 Application 10
System diagram 10A
2 heat circuits and a hot-water circuit with direct control of storage tank.
Heat circuit 1 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.
Heat circuit 2 The motor valve M2 controls the flow temperature, which is measured by the sen-
sor S4. The return temperature measured by the sensor S5 can be limited. The cir-
culation pump P2 is running when the reference flow temperature is above 20 °C
or the outdoor temperature is below 2 °C.
Hot-water circuit ECL 2000 Type 1:
The motor valve M
(ON/OFF)
performs on/off control of the storage tank temperature,
which is measured by the sensor S6. The actuator M
(ON/OFF)
must be of a type that
opens/closes completely upon receiving a relay signal from the controller. The
circulation pump P3 is not controlled by the ECL 2000.
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