Viessmann Vitocrossal 300 Service Instructions For Contractors page 79

Solar
(cont.)
Coding in the delivered condition
07:0 Interval function of the
solar circuit pump
switched off
08:60 The solar circuit pump will
stop when the actual cyl-
inder temperature rea-
ches 60 °C (maximum
cylinder temperature).
09:130 The solar circuit pump
stops if the collector tem-
perature reaches 130 °C
(maximum collector tem-
perature to protect the
system components).
0A:5 To protect the system
components and heat
transfer medium, the
speed of the solar circuit
pump is reduced when
the differential between
the actual cylinder tem-
perature and set cylinder
temperature is less than
5 K.
0b:0 Collector frost protection
function switched off
0C:1 Delta T monitoring
switched on.
No flow rate captured in
the collector circuit, or
flow rate too low.
Possible change
07:1 Interval function of the
solar circuit pump switched
on.
To capture the collector
temperature more accu-
rately, the solar circuit
pump starts for short
cycles.
08:10 The maximum cylinder
to temperature can be adjus-
08:90 ted from 10 to 90 °C
09:20 The temperature can be
to adjusted from 20 to
09:200 200 °C
0A:0 The differential between
to the set cylinder tempera-
0A:40 ture and the start point for
reducing the stagnation
time can be adjusted from
0 to 40 K.
0b:1 Collector frost protection
function switched on (not
required with Viessmann
heat transfer medium).
0C:0 Delta T monitoring
switched off.
Code 2
79