Dhw/Group "3; Solar/Group "4 - Viessmann VITOCROSSAL Service Instructions Manual

DHW/Group "3"

Coding
Coding in the delivered condition
Set DHW temperature reheating suppression
67:40 For solar DHW heating: Set DHW
temperature 40 °C. Reheating is
suppressed above the selected set
temperature. The boiler only starts
as backup if the rise in the cylinder
temperature is too low.
Enable DHW circulation pump
73:0 DHW circulation pump: "ON" ac-
cording to time program
(only for weather-compensated
control units)

Solar/Group "4"

Note
The solar group is only displayed if a solar control
module, type SM1, is connected.
Coding
Coding in the delivered condition
Speed control solar circuit pump
02:... Data dependent on the software
version of solar control module
SM1
Maximum cylinder temperature
08:60 The solar circuit pump is switched
off when the actual DHW tempera-
ture reaches the maximum cylinder
temperature (60 °C).
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.
Possible change
67:0 Set DHW temperature adjustable
to from 0 to 95 °C (limited by boiler-
67:95 specific parameters)
73:1 "ON" from once per hour for 5 min
to up to 6 times per hour for 5 min dur-
73:6 ing the time program
73:7 Constantly "ON"
Possible change
02:0 Solar circuit pump is not speed-con-
trolled
02:1 With wave packet control function
Never adjust
02:2 Solar circuit pump is speed-control-
led with PWM control
08:10 Set DHW temperature adjustable
to from 10 to 90 °C.
08:90
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
Code 1
≙
0.1 l/min.
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