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5673 649 - 18
Vitocrossal 300 CU3A 26 to 199 Service
Coding 1
Coding in the factory setting
Possible change
Enable DHW recirculation pump
67:40
For solar DHW heating:
Set DHW temperature
104°F (40°C). Reheating is
suppressed above the selected
set temperature.
67:0
to
67:95
Set DHW temperature adjustable from
32°F to 203°F (0°C to 95°C) (limited
by boiler-specific parameters)
73:0
DHW recirculation pump: “ON”
in accordance with the time
program
73:1
to
73:6
“ON” from once per hour for 5 minutes
up to 6 times per hour for 5 minutes
during the time program.
73:7
Constantly “ON”.
DHW
Solar
Note:
The solar group is only displayed if a solar control module, type SM1, is connected.
Coding in the factory setting
Possible change
Speed control solar circuit pump
02:0
Solar circuit pump is not
speed-controlled.
02:1
Solar circuit pump is speed-controlled
with wave packet control.
02:2
Solar circuit pump is speed-controlled
with PWM control.
DHW tank maximum temperature
08:60
The solar circuit pump is
switched off when the actual
DHW tank temperature
reaches 140°F (60°C)
(maximum DHW tank temp).
08:10
to
08:90
Set DHW temperature adjustable from
50°F to 194°F (10°C to 90°C).
Stagnation time reduction
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 DHW tank
temperature and the set DHW
tank temperature is less than
5 K.
0A:0
Stagnation time reduction disabled.
0A:1
to
0A:40
Temperature differential adjustable from
1 to 40 K.
Flow rate solar circuit
0F:70
Solar circuit flow rate at
the maximum pump speed
1.86 GPM (7 L/minute)
0F:1
to
0F:255
Flow rate adjustable from
0.02 to 6.7 GPM (0.1 to 25.5 L/minute;)
0.02 GPM (1 step
K
0.1 L/minute.)
Extended solar control functions
20:0
No extended control
function enabled.
20:1
Additional 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 exchanger
without additional temperature sensor.
20:8
Solar heating via external heat exchanger
with additional temperature sensor.
20:9
Solar heating of two DHW tanks.