Hydraulic Components

SDC / DHC

 

 

Legend:

HWPCsetpoint = Actual temperature at flow sensor "hot-water pre- control"

HWsetpoin t = Hot-water setpoint temperature

P09 (HW ) = Value of parameter 09 (hot-water loading temperature offset)

SDHW = Switching difference hot water

Both pumps (tank loading pump and hot-water pre-control) switch off after completion of a hot-water circuit loading, taking into account their extended running times. If they are to switch off simultaneously, identical extended running times must be selected for them.

7.2.7Quick hot-water control

For monetary reasons, hot-water tanks are not used in many district heating systems, especially in Eastern Europe. The hot- water setpoint temperature is held in a closed loop pipeline here (see hydraulic example).

SF

a

MK

SLP b

 

 

VF

a

Flow from closed loop

b Draw-off points

 

pipeline

 

New parameters •

Minimum spread between the tank sensor and the return

 

sensor from which an offset at the valve is given (see "Mixed

 

Heating Circuit 1"/"Mixed Heating Circuit 2" menu, parameter

 

39)

 

• Additional value for offset in %/K deviation (valve staring point

 

for controller) (see "Mixed Heating Circuit 1"/"Mixed Heating

 

Circuit 2" menu, parameter 40)

152

 

EN2H-0221GE51 R0808

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Honeywell EN2H-0221GE51 R0808 service manual Quick hot-water control, New parameters
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EN2H-0221GE51 R0808 specifications

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