Operating instructions

79
"Temperature differential heating 7003"
Temperature differential for calculating
the heating limit.
Heating limit: Set room temperature
minus "Temperature differential heat-
ing"
If the average outside temperature cal-
culated over 3 hours falls below the heat-
ing limit, central heating starts.
Example:
The selected set room temperature is
20 °C; the value set under "Tempera-
ture differential heating" is 4 K.
This results in a heating limit of 16 °C (20
°C – 4 K).
Central heating commences if the aver-
age outside temperature drops below
16 °C (heating limit).
If the average outside temperature
exceeds 18 °C, central heating stops
(because of the specified hysteresis of
2 K).
2K
18°C
16°C
20°C
t
A
Set room temperature
B
Adjusted outside temperature
C
Selected value "Temperature dif-
ferential heating"
D
Heating mode OFF
E
Heating mode ON
Delivered condition
40 (≙ 4 K)
Setting range
0 to 200 (≙ 0 to 20 K)
7004 Temperature differential for the cooling limit
"Temperature differential cooling 7004"
Temperature differential for calculating
the cooling limit.
Cooling limit: Set room temperature plus
"Temperature differential cooling"
If the average outside temperature cal-
culated over 3 hours exceeds the cooling
limit, room cooling is switched on.
Example:
The selected set room temperature is
20 °C; the value set under "Tempera-
ture differential cooling" is 4 K.
This results in a cooling limit of 24 °C (20
°C + 4 K).
Room cooling commences if the average
outside temperature rises above 24 °C
(cooling limit).
Parameter group system definition
7003 Temperature differential for the heating limit
5441 603 GB
Service