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256 EN2H-0221GE51 R0808
Fault 126
Maximum temperature limit 130
Minimum temperature limit 129
Reset 135
Sensor control mode 130
Start-up protection 128
Heating circuit bus authorisation 231
Heating circuit name 180
Heating circuit pump extended running
time 165
Heating circuits minimum temperature limit
130
Heating curve 161, 162
Heating limit 175
Heating system 164
Hot water
Circuit switching differential 191
Control mode 154, 189
Maximum temperature 188
Night-time temperature 188
Pre-control 151
Pre-regulator 150
Quick connection in cascaded systems
192
Hot-water
Control 152
Production 187
Hot-water loading mode stage II 134
Hot-water tank
Loading 187
Hydraulic buffer relief 215
I
Indirect return increase 161, 222
L
Legionella protection 188
Loading enabling 191
Loading pump extended running 191
M
Menu
Direct Heating Circuit 172, 180
Mixed Heating Circuit 180
Mixed Heating Circuits 172
Minimum burner runtime 131
O
OpenTherm 140
Operating mode 118
Operating states 40
Operation with NTC 20K room
temperature sensor 231
Outside temperature 121, 122, 135
Outside temperature emergency operation
value 121
Outside temperature sensing 120
Overview of the technician parameters 81,
119, 135
P
Parallel operation 155, 189
Parallel operation based on weather
conditions 190
Primary pump 158
Extended running time 158
Priority isolating circuit 190
Priority mode 189
Pump forced operation 127
R
Reduced operation 164
Relay/function test 239
Reset 77, 249
Return increase 159