Application 11
EI.65.D4.02
84
6.3.12 Application 11
System diagram 11A
Two separate heat circuits with common primary heat exchanger for a heat circuit
and a hot-water circuit with indirect control.
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 when the outdoor temperature is below 2 °C.
Hot-water circuit
The hot-water circuit is connected to the secondary side of the heat exchanger, in
parallel with heat circuit 2. The charging pump P3 performs on/off control of the
storage tank temperature, which is measured by the sensor S6. Service-water
heating takes priority over room heating, i.e. the circulation pump P2 in heat cir-
cuit 2 is stopped during tank charging. The pump P4 maintains circulation through
the storage tank but is not controlled by the ECL 2000.
Summary of Contents for ECL 2000
Page 1: ...Installation Guide ECL 2000 11 99 EI 65 D4 02...
Page 2: ......
Page 3: ...Installation Guide ECL 2000 Danfoss A S EI 65 D4 02...
Page 16: ...Mounting EI 65 D4 02 10...
Page 26: ...Electrical Connections EI 65 D4 02 20...
Page 120: ...Application 17 Type 2 Only EI 65 D4 02 114...
Page 134: ...Appendix C Service Menus EI 65 D4 02 128...
Page 136: ...References EI 65 D4 02 130...
Page 140: ...Index EI 65 D4 02 134...