Return Temperature Limit For Hot-Water Loading - Honeywell SDC heating and district heating controller Service Manual

SDC / DHC
7.2.4
EN2H-0221GE51 R0808
Besides return temperature limitation either volume flow limit or
thermal output limit can also be set for this controller. The
selection of these functions is described below in parameter 11.
Para- Designation
meter
08 Max. return
setpoint
09 Starting point
of the flexible
district heating
return
temperature
11 Return limit
0 =
Temperature
1 = Volume
flow and
temperature
2 = Heat output
and
temperature

Return temperature limit for hot-water loading

In the case of hot-water loading a special constant return setpoint
applies. It is valid only if the hot-water loading pump is operating.
The return setpoint is to be set with parameter 10.
Para- Designation
meter
10 Hot-water
circuit loading:
Target return
Range Pre-
setting
0 ... 100 90
Off Off
–40...+10
0 / 1 / 2 0
Range Presetti
ng
40 ... 100 90
Hydraulic Components
Step Unit
0.5 °C
0.5 °C
- -
Step Unit
°C
0.5
149