Viessmann Vitovalor 300-P Installation And Service Instructions For Contractors page 95

Coding level 1
(cont.)
Parameter address A5:...
7
to
15
Coding in the delivered condition
Extended economy function, adjusted outdoor temperature
A6:36 Extended economy mode disa-
bled
Extended economy function, mixer
A7:0 Only for heating circuit with mixer:
Without mixer economy function
Pump idle time, transition reduced Operation
A9:7 With pump idle time: heating circuit
pump "OFF" when set value is
modified by changing the operating
mode or changing the set room
temperature
Weather-compensated/room temperature hook-up
b0:0 For heating circuit with mixer and
remote control only:
Heating mode/reduced mode:
Weather-compensated
Economy function room temperature
b5:0 For heating circuit with mixer and
remote control only:
Without room temperature-de-
pendent heating circuit pump logic
function
With heating circuit pump logic function: Heating circuit pump "OFF"
OT RT 1 K
> –
set
OT RT 9 K
> –
set
Possible change
A6:5
to
A6:35
A7:1
A9:0
A9:1
to
A9:15
b0:1
b0:2
b0:3
b5:1
to
b5:8
Extended economy mode enabled:
The burner and heating circuit pump
will stop at a variable value, adjusta-
ble between 5 and 35 °C plus 1 °C.
Mixer is being closed. Basis for this
is the adjusted outside temperature.
This is composed of the actual out-
side temperature and a time con-
stant that takes account of the way
an average building cools down.
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
■
Without pump idle time
With pump idle time, adjustable from
1 to 15.
1 = short idle time
15 = long idle time
Heating mode: Weather-compensa-
ted
Reduced mode: With room tempera-
ture hook-up
Heating mode: With room tempera-
ture hook-up
Reduced mode: Weather-compen-
sated
Heating mode/reduced mode: With
room temperature hook-up
Heating circuit pump logic function,
see the following table.
Codes
95