Honeywell SDC Service Manual page 203

Smile sdc heating and district heating controller
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SDC / DHC
EN2H-0221GE51 R0812
Control mode 1 – Loading control for heating circuit and hot-water
demand
System hydraulics
a
Heat generator
b
Buffer tank
Heating circuit and hot-water controls send their demand values
to buffer control. Buffer control demand additional energy from the
heat generator via the buffer loading pump.
See the table below for detailed correlations.
Control mode 2 – Loading control for heating circuit demand
System hydraulics
a
Heat generator
b
Buffer tank
Hydraulic Components
c
Hot-water tank
c
Hot-water tank
203

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