Heating Circuit 1, Heating Circuit 2, Heating Circuit 3; Coding - Viessmann Vitoladens 300-W Installation And Service Instructions Manual

Solar
(cont.)
Coding in the delivered condition
Extended solar control functions
20:0 No extended control function ena-
bled

Heating circuit 1, heating circuit 2, heating circuit 3

Coding

Coding in the delivered condition
Economy function outdoor temperature
A5:5 With heating circuit pump logic
function (economy control): Heat-
ing circuit pump is "OFF" when the
outside temperature (OT) is 1 K
higher than the set room tempera-
ture (RT
OT
>
Parameter address A5:...
1
2
3
4
5
6
7
to
15
)
set
RT + 1 K
set
With heating circuit pump logic function: heating circuit pump "OFF"
OT RT + 5 K
>
set
OT RT + 4 K
>
set
OT RT + 3 K
>
set
OT RT + 2 K
>
set
OT RT + 1 K
>
set
OT RT
>
set
OT RT - 1 K
>
set
OT RT - 9 K
>
set
Possible change
20:1 Auxiliary 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 ex-
changer without additional tempera-
ture sensor
20:8 Solar heating via external heat ex-
changer with additional temperature
sensor
20:9 Solar heating of 2 DHW cylinders
Possible change
A5:0 Without heating circuit pump logic
function
A5:1 With heating circuit pump logic func-
to tion: heating circuit pump "OFF"
A5:15 (see the following table)
Code 1
47