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Application 3
EI.65.D4.02
49
6.3.4 Application 3
System diagram 3A
Common primary heat exchanger for a heat circuit and a hot-water circuit with
indirect control of storage tank.
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 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 the heat circuit. The charging pump P2 performs on/off control of the
storage tank temperature, which is measured by the sensor S6. The circulation
pump P3 is controlled according to the 7-day program. Service-water heating takes
priority over room heating, i.e. the circulation pump P1 in the heat circuit is
stopped during tank charging.
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...