Temperature Differential For Calculating The Heating Limit - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group system definition

7003 Temperature differential for calculating the heating limit !

Heating limit:
Set room temperature – "Temperature
differential for calculating the heating
limit".
Central heating is switched on automat-
ically if the adjusted outside temperature
(averaging interval in the delivered con-
dition 3 hours) falls below the heating
limit. The "Heating and DHW" operating
program must be enabled.
Example:
Set room temperature = 20 °C
"Temperature differential for calculat-
ing the heating limit" = 4 K
Gives a heating limit of 16 °C (20 °C – 4
K).
■ Adjusted outside temperature <
16 °C (heating limit):
Central heating is started.
■ Adjusted outside temperature >
18 °C (due to specified hysteresis of
2 K):
Central heating is stopped.
7004 Temperature differential for calculating the cooling
limit !
Cooling limit:
Set room temperature + "Temperature
differential for calculating the cooling
limit".
Central cooling is switched on automati-
cally if the adjusted outside temperature
(averaging interval in the delivered con-
dition 3 hours) exceeds the cooling limit.
The "Heating/cooling and DHW" oper-
ating program must be enabled.
Example:
Set room temperature = 20 °C
100
20°C
18°C
2K
16°C
A Set room temperature
B Adjusted outside temperature
C Set value "Temperature differen-
tial for calculating the heating
limit"
D Heating mode OFF
E Heating mode ON
Delivered condi-
tion
40 (≙ 4 K)
"Temperature differential for calculat-
ing the cooling limit" = 4 K.
Gives a cooling limit of 24 °C (20 °C + 4
K).
■ Adjusted outside temperature >
24 °C (cooling limit):
Central cooling is started.
■ Adjusted outside temperature <
23 °C (due to specified hysteresis of
1 K):
Central cooling is stopped.
t
Setting range
0 to 200
(≙ 0 to 20 K)