Viessmann VITODENS 242-F Installation And Service Instructions Manual page 109

"Solar"
(cont.)
Coding in the delivered condition
07:0 Interval function of the so-
lar circuit pump switched
off.
08:60 Set DHW temperature
(maximum cylinder tem-
perature) 60 °C.
09:130 Maximum collector tem-
perature (to protect the
system components)
130 °C.
0A:5 Temperature differential
for stagnation time reduc-
tion (reduction in the
speed of the solar circuit
pump to protect system
components and heat
transfer medium) 5 K.
0b:0 Frost protection function
for solar circuit switched
off.
0C:1 Flow rate monitoring ac-
tive.
No flow rate captured in
the solar circuit, or flow
rate too low.
0d:1 Night DHW circulation
monitoring active.
Situations with an unwan-
ted flow rate in the solar
circuit (e.g. at night) are
detected and reported to
the heat source control
unit.
Possible change
07:1 Interval function of the so-
lar circuit pump switched
on.
To capture the collector
temperature more accu-
rately, the solar circuit
pump starts for short cy-
cles.
08:10 Set DHW temperature ad-
to justable from 10 to 90 °C.
08:90
09:20 Maximum collector tem-
to perature adjustable from
09:200 20 to 200 °C.
0A:0 Stagnation time reduction
is disabled.
0A:1 Temperature differential
to adjustable from 1 to 40 K.
0A:40
0b:1 Frost protection function
for solar circuit switched on
(not required with
Viessmann heat transfer
medium).
0C:0 Flow rate monitoring
switched off.
0d:0 Night DHW circulation
monitoring switched off
Code 2
109