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Coding Level 2
"General" Group
Coding in the factory set condition
"Connection at terminals 2 and 3 in plug 143"
99:0
Connection disabled
"Connection at terminals 1 and 2 in plug 143 "
9a:0
Connection disabled.
"Set supply temperature for external demand"
9b:70
Set to 158°F (70°C).
154
(continued)
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Possible change
99:1
No function
99:2
External "mixing valve closed"
Heating circuit with mixing valve M2
(heating circuit 2).
99:3
No function
99:4
External "mixing valve closed"
Heating circuit with mixing valve M3
(heating circuit 3).
99:5
No function
99:6
External "mixing valve closed"
Heating circuit with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3.
99:7
No function
99:8
External blocking
99:9
No function
99:10
External blocking/External "mixing valve closed"
Heating circuit with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
99:11
No function
99:12
External blocking/External "mixing valve closed"
Heating circuit with mixing valve M3
(heating circuit 3).
99:13
No function
99:14
External blocking/External "mixing valve closed"
Heating circuit with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
99:15
No function
9a:1
No function
9a:2
External "mixing valve open"
Heating circuit with mixing valve M2
(heating circuit 2).
9a:3
No function
9a:4
External "mixing valve open"
Heating circuit with mixing valve M3
(heating circuit 3)
9a:5
No function
9a:6
External "mixing valve open"
Heating circuit with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
9a:7
No function
9b:0
Adjustable from 32°F to 261°F
to
(0°C to 127°C)
9b:127
(limited by boiler specific coding).
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