Viessmann VITOTRONIC 200 Service Instructions Manual page 29

Heating circuits/cooling circuit
To prevent the pumps from seizing up
during prolonged idle periods, the heat
pump control unit starts all directly con-
trolled pumps daily at 13:00 h for 10 s
(pump kick).
Weather-compensated control
The heat pump control unit determines
the set flow temperature from the rele-
vant set room temperature "Standard
room temperature 2000" or "Reduced
room temperature 2001" and the long
term average outside temperature
according to the set heating/cooling
curve.
Weather-compensated control unit
with room temperature influence
Room temperature sensor is required,
integrated in the remote control, enable
via parameter "Remote control 2003".
Enabling of the room influence via
parameter "Room temperature hook-
up 200B". The strength of the influence
on the heating curve/cooling curve is
specified by parameter "Influence room
temperature hook-up 200A"/"Influ-
ence room temperature hook-up cool-
ing circuit 7104".
Cooling via a separate cooling circuit
■ Only possible if no cooling takes place
via a heating circuit (Parameter "Cool-
ing circuit 7101").
■ A separate room temperature sensor
must always be available.
Booster heaters
See also chapter "Booster heaters" on
page 19.
(cont.)
Room temperature-dependent con-
trol
Note
Only heat pump specialists certified by
Viessmann may carry out the conversion
from weather-compensated to room
temperature-dependent control.
The heat pump control unit determines
the set flow temperature from the differ-
ential of the set and actual room temper-
atures.
Room temperature sensor is required,
integrated in the remote control, enable
via parameter "Remote control 2003".
■ A separate cooling circuit is constantly
cooled.
■ No time program can be set for a
separate cooling circuit.
Function description
29