Viessmann Vitocrossal 300 CA3 2.5 Installation And Service Instructions Manual page 169

Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
"Heating Circuit ..." Group
Coding in the factory set condition
"Mixing valve runtime"
c3:125 Only for heating circuits with mixing
valve:
Mixing valve runtime 125 sec.
"System dynamics mixing valve"
c4:1 System dynamics:
Mixing valve control characteristics.
"Minimum supply temperature limit"
c5:20 Electronic minimum supply temperature
limit 68°F (20°C) (only when operating
with standard room temperature).
"Maximum supply temperature limit"
c6:75 Electronic maximum supply temperature
limit set to 167°F (75°C).
"Room influence limit"
c8:31 With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:
No room influence limit
"External operating program changeover"
d5:0 With external operating program
changeover (observe setting of coding
"5d", "5e", "5f" and "91" in the
"General" group). Changeover "Constant
central heating with reduced room
temperature" or "Standby mode"
(subject to set reduced room temperature).
"EA1 extension: Operating program changeover"
d8:0 No operating program changeover.
"Day temperature target"
e1:1 Do not adjust!
"Display correction of the actual room temperature"
e2:50 With remote control:
No display correction of the actual room
temperature.
(continued)
Possible change
c3:10
to
c3:255
c4:0
to
c4:3
c5:1
to
c5:127
c6:10
to
c6:127
c8:1
to
c8:30
d5:1
d8:1
d8:2
d8:3
e2:0
to
e2:49
e2:51
to
e2:99
Coding Level 2
Adjustable from 10 sec. to 255 sec.
Controller responds too quickly (cycles
between "Open" and "Closed"):
Select a lower value.
Controller responds too slowly
(temperature is not held sufficiently):
select a higher value.
Adjustable from 34°F to 261°F
(1°C to 127°C)
(limited by boiler specific coding).
Adjustable from 50°F to 261°F
(10°C to 127°C)
(limited by boiler specific coding).
Adjustable from 2°F to 54°F
(1 K to 30 K).
Changeover to "Constant operation
with standard room temperature".
Operating program changeover via input
DE1.
Operating program changeover via input
DE2.
Operating program changeover via input
DE3.
Display correction –9°F (–5 K)
to
Display correction –0.2°F (–0.1 K)
Display correction +0.2°F (+0.1 K)
to
Display correction +9°F (+4.9 K)
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