Heat Generation, Heat Exchanger, District Heating - Honeywell SDC heating and district heating controller Service Manual

Hydraulic Components
Returning
Function
144
The operating ours and start-ups can be reset separately for
stage 1 and stage 2 via two parameters in the "Heat Generator"
menu.
7.2

Heat generation, heat exchanger, district heating

The heat exchanger control assures that the right flow
temperature is provided for all heating demands. The setpoint for
the heat exchanger's secondary flow temperature is the maximum
selection of all the required flow setpoints. An increase is to be
entered under parameter 01.
Para- Designation
meter
01 Increase
The setpoint for the secondary flow temperature has a maximum
limit through code 02.
There is a fixed minimum limit of 10°C < 10°C, corresponding to
the functionality of the return interval flushing.
The parallel shift is valid only if there is a demand higher than
15°C.
Para- Designation
meter
02 Max. flow
temp. setpoint
Range Presetti
ng
–10 ... 50 0
Range Presetti
ng
10 ... 130 90
SDC / DHC
Step Unit
0,5 K
Step Unit
0.5 °C
EN2H-0221GE51 R0808