164
5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
“Solar” Group
(continued)
Coding Level 2
Coding in the factory set condition
Possible change
“Extended control function”
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 storage tanks
[Solar heating of two DHW tanks].
“Start temperature differential for central heating backup”
22:8
Start temperature differential with central
heating backup 14°F (8 K)
(code “20:4” must be set).
22:2
to
22:30
Start temperature differential
adjustable from 4°F to 54°F
(2 K to 30 K).
“Stop temperature differential for central heating backup”
23:4
Stop temperature differential with central
heating backup 7°F (4 K)
(code “20:4” must be set).
23:2
to
23:30
Stop temperature differential
adjustable from 2°F to 52°F
(1 to 29 K).
“Start temperature for thermostat function”
24:40
Start temperature for thermostat function
104°F (40°C) (coding “20:5”or “20:6”
must be set).
24:0
to
24:100
Adjustable from 0°F to 180°F (0 K to
100 K).
“Stop temperature for thermostat function”
25:50
Stop temperature for thermostat function
122°F (50°C) (coding “20:5”or “20:6”
must be set).
25:0
to
25:100
Adjustable from 0°F to 180°F
(0 K to 100 K).
“Priority for DHW storage tank 1”
26:1
Priority for DHW storage tank 1
with cyclical heating (code “20:9”
must be set).
26:0
Priority for DHW storage tank 1
without cyclical heating.
26:2
Priority for DHW storage tank 2
without cyclical heating.
26:3
Priority for DHW storage tank 2
with cyclical heating.
26:4
Alternate heating without priority
for one of the DHW storage tanks .
