Honeywell SDC Service Manual page 7

SDC / DHC
7.2.7
7.2.8
7.2.9
7.2.10 Circulation pump control mode ........................................................... 155
7.2.11 Switch-off of district heating control .................................................... 156
7.2.12 Return interval flushing ....................................................................... 156
7.2.13 Heat meter for additional limitation according to the volume flow
7.2.14 Charging pump (CHP) ........................................................................ 157
7.2.15 Primary pump ..................................................................................... 158
7.2.16 Boiler circuit pump .............................................................................. 158
7.2.17 Return increase .................................................................................. 159
7.3 Heating circuit ................................................................................................. 162
7.3.1
7.3.2
7.3.3
7.3.4
EN2H-0221GE51 R0812
Quick hot-water control ....................................................................... 152
Mode of operation of hot-water control mode "external
operation" ........................................................................................... 154
Conditional parallel operation for mixed heating circuits ..................... 155
or thermal output ................................................................................ 156
7.2.17.1 Bypass pump (RBP) .............................................................. 161
7.2.17.2 Return maintenance through controlled feed water
addition 161
7.2.17.3 Indirect return increase ......................................................... 162
General heating circuit functions ........................................................ 162
7.3.1.1 Heating curve ........................................................................ 162
7.3.1.2 Heating curve setting (heating curve).................................... 163
7.3.1.3 Reduced operation ................................................................ 165
7.3.1.4 Heating system ..................................................................... 165
7.3.1.5 Heating circuit temperature limit ............................................ 165
7.3.1.6 Heating circuit temperature offset ......................................... 166
7.3.1.7 Heating circuit pump extended running time ......................... 166
7.3.1.8 Screed function ..................................................................... 166
Heating circuit constant temperature control ...................................... 169
Fixed-value control ............................................................................. 169
Consideration of the room temperature/room influence ...................... 170
7.3.4.1 Heating circuit room connection ............................................ 170
7.3.4.2 Heating circuit room factor .................................................... 171
Contents
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