Viessmann Vitotronic 100 Installation And Service Instructions Manual page 33

Group 4 "Solar"
(cont.)
Coding in the delivered condition
Stagnation time reduction
0A:5 Temperature differential for stagna-
tion time reduction (reduction in
the speed of the solar circuit pump
to protect system components and
heat transfer medium) 5 K.
Flow rate solar circuit
0F:70 Solar circuit flow rate at the maxi-
mum pump speed 7 l/min.
Extended solar control functions
20:0 No extended control function ena-
bled
Group 5 "Heating circuit 1"
Coding
Coding in the delivered condition
Priority DHW heating
A2:2 Cylinder priority for heating circuit
pump
Min. flow temperature heating circuit
C5:20 Electronic minimum flow tempera-
ture limit 20 °C
Max. flow temperature heating circuit
C6:74 Electronic maximum flow tempera-
ture limit set to 74 °C
Pump control, heating circuit pump
F6:25 "DHW only" operating mode:
Heating circuit pump is constantly
ON.
Possible change
0A:0 Stagnation time reduction not active.
0A:1 Temperature differential adjustable
to from 1 to 40 K.
0A:40
0F:1 Flow rate adjustable from 0.1 to
to 25.5 l/min,
0F:255 1 step
20:1 Auxiliary function for DHW heating
20:2 Differential temperature control 2.
20:3 Differential temperature control 2
and auxiliary function.
20:4 Differential temperature control 2 for
central heating backup.
20:5 Thermostat function
20:6 Thermostat function and auxiliary
function
20:7 Solar heating via external heat ex-
changer without additional tempera-
ture sensor
20:8 Solar heating via external heat ex-
changer with additional temperature
sensor
20:9 Solar heating of 2 DHW cylinders
Possible change
A2:0 Without cylinder priority for heating
circuit pump
C5:1 Minimum limit adjustable from
to 1 to 127 °C (limited by boiler-specific
C5:127 parameters)
C6:10 Maximum limit adjustable from 10 to
to 127 °C (limited by boiler-specific pa-
C6:127 rameters)
F6:0 Heating circuit pump is constantly
OFF.
F6:1 The heating circuit pump starts 1 to
to 24 times per day for 10 min each
F6:24 time.
Coding level 1
≙
0.1 l/min.
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