Heating Circuit 1, Heating Circuit 2, Heating Circuit 3 - Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors

Codes
Coding level 1
(cont.)

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
Coding in the delivered condition
Extended economy function dampened outdoor temp.
A6:36 Extended economy mode disa-
bled
Extended economy function mixing valve
A7:0 Without mixer economy function
(only for heating circuits with mix-
er)
Pump idle time, transition reduced mode
A9:7 With pump idle time: heating circuit
pump "OFF" if set value is modi-
fied by changing the operating
mode or changing the set room
temperature
44
)
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
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)
Possible change
A6:5 Extended economy mode active.
to The burner and heating circuit pump
A6:35 will stop at a variable value, adjusta-
ble between 5 and 35 °C plus 1 °C.
Mixer is being closed. The basis for
this is the adjusted outside tempera-
ture. This is composed of the actual
outside temperature and a time con-
stant that takes account of the way
an average building cools down.
A7:1 With mixer economy function (exten-
ded heating circuit pump logic):
Heating circuit pump also "OFF":
If the mixer has been trying to
■
close for longer than 20 min.
Heating circuit pump "ON":
If the mixer changes to control
■
function
If there is a risk of frost
■
A9:0 Without pump idle time
A9:1 With pump idle time, adjustable from
to 1 to 15. The higher the value, the
A9:15 longer the pump idle time.