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Coding Level 2
"Solar" Group
Coding in the factory set condition
"Temperature differential between the collector temperature and actual DHW temperature"
03:10
Temperature differential for the start of
speed control 18°F (10 K).
"Controller amplification of the speed control"
04:4
Controller amplification of the speed
control 4%/K.
"Minimum speed of the solar circuit pump"
05:10
Minimum speed of the solar circuit pump
10% of the maximum speed.
"Maximum speed of the solar circuit pump"
06:75
Maximum speed of the solar circuit
pump 75% of maximum possible speed.
"Interval function of the solar circuit pump"
07:0
Interval function of the solar circuit
pump switched off.
"Maximum storage tank temperature"
08:60
DHW setpoint temperature (maximum
tank temperature) 140°F (60°C).
"Maximum collector temperature"
09:130
Maximum collector temperature
(to protect system components)
266°F (130°C).
"Stagnation time reduction"
0a:5
Temperature differential for reducing the
stagnation time (reduction in solar circuit
pump speed to protect system components
and heat transfer medium) 11°F (5 K).
"Frost protection function for solar circuit"
0b:0
Frost protection function for solar circuit
switched off.
"Delta T monitoring"
0c:1
Delta T monitoring switched on. No flow
rate captured in the solar circuit, or flow
rate too low.
"Minimum collector temperature"
12:20
Minimum collector temperature
(minimum solar circuit pump start
temperature) 68°F (20°C).
162
(continued)
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Possible change
03:5
Adjustable from 9°F to 36°F
to
(5 K to 20 K).
03:20
04:1
Adjustable from 1 to 10%/K.
to
04:10
05:2
Adjustable from 2 to 100%.
to
05:100
06:1
Adjustable from 1 to 100%.
to
06:100
07:1
Interval function of the solar circuit
pump switched on.
To capture the collector temperature
more accurately, the solar circuit
pump starts for short cycles.
08:10
Adjustable from 50°F to 194°F
to
(10°C to 90°C).
08:90
09:20
Adjustable from 68°F to 392°F
to
(20°C to 200°C).
09:200
0a:0
Stagnation time reduction disabled.
0a:1
Adjustable from 2°F to 72°F
to
(1 K to 40 K).
0a:40
0b:1
Frost protection function for solar
circuit switched on (not required with
Viessmann heat transfer medium).
0c:0
Delta T monitoring switched off.
12:0
No minimum limit.
12:1
Adjustable from 34°F to 194°F
to
(1°C to 90°C).
12:90
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