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3064816_201804
24. Parameter description
System configuration 01
Direct heating circuit on the condensing
optional additional circuits with mixer via mixer modules
(factory setting)
• Burner starts subject to demand from the direct heating
circuit or optionally connected circuits with mixer
• Internal appliance pump is enabled as a heating circuit pump
• Boiler water temperature control;
set value is specified by heating circuit or mixer circuits
• Input E2: not assigned
dHk
System configuration 02
One or more circuits with mixer via mixer modules (no
direct heating circuit on the condensing boiler)
• Burner starts subject to demand from the connected
circuits with mixer
• Internal appliance pump is enabled as a feed pump
• Boiler water temperature control;
set value is specified by circuits with mixer
• Input E2: not assigned
MK1
MK2
M
M
System configuration 11
Plate heat exchanger for hydraulic separation
• Burner starts subject to demand from the header
temperature control
• Feed/heating circuit pump (DHW CP) enabled as a
feed pump for header demand
• Header temperature control
• Input E2: Header sensor (SAF)
• Parameter HG08 (TFmax): 90 °C
• DHW cylinder connection see parameter HG61
SAF
SAF
E2
Hydraulic
separation
Low loss
header
System configuration 12
Low loss header with header sensor
+ direct heating circuit (A1)
• Burner starts subject to demand from the header
temperature control
• Internal appliance pump is enabled as a feed pump
• Header temperature control
• Input E2: Header sensor (SAF)
• Parameter HG08 (TFmax): 90 °C
• Parameter HG14 (output A1): HCP
• DHW cylinder connection see parameter HG61
E2
SAF
dHk
A1
