162
5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Coding in the factory set condition
Possible change
“Temperature differential between the collector temperature and actual DHW temperature”
03:10
Temperature differential for the start of
speed control 18°F (10 K).
03:5
to
03:20
Adjustable from 9°F to 36°F
(5 K to 20 K).
“Controller amplification of the speed control”
04:4
Controller amplification of the speed
control 4%/K.
04:1
to
04:10
Adjustable from 1 to 10%/K.
“Minimum speed of the solar circuit pump”
05:10
Minimum speed of the solar circuit pump
10% of the maximum speed.
05:2
to
05:100
Adjustable from 2 to 100%.
“Maximum speed of the solar circuit pump”
06:75
Maximum speed of the solar circuit
pump 75% of maximum possible speed.
06:1
to
06:100
Adjustable from 1 to 100%.
“Interval function of the solar circuit pump”
07:0
Interval function of the solar circuit
pump switched off.
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.
“Maximum storage tank temperature”
08:60
DHW setpoint temperature (maximum
tank temperature) 140°F (60°C).
08:10
to
08:90
Adjustable from 50°F to 194°F
(10°C to 90°C).
“Maximum collector temperature”
09:130
Maximum collector temperature
(to protect system components)
266°F (130°C).
09:20
to
09:200
Adjustable from 68°F to 392°F
(20°C to 200°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).
0a:0
Stagnation time reduction disabled.
0a:1
to
0a:40
Adjustable from 2°F to 72°F
(1 K to 40 K).
“Frost protection function for solar circuit”
0b:0
Frost protection function for solar circuit
switched off.
0b:1
Frost protection function for solar
circuit switched on (not required with
Viessmann heat transfer medium).
“Delta T monitoring”
0c:1
Delta T monitoring switched on. No flow
rate captured in the solar circuit, or flow
rate too low.
0c:0
Delta T monitoring switched off.
“Minimum collector temperature”
12:20
Minimum collector temperature
(minimum solar circuit pump start
temperature) 68°F (20°C).
12:0
No minimum limit.
12:1
to
12:90
Adjustable from 34°F to 194°F
(1°C to 90°C).
“Solar” Group
(continued)
Coding Level 2
