Return-temperature limitation
SERV setting value
No.
Function
35
90
Upper limit value of return temperature
(0...149) (°C)
36
90
Lower limit value of return temperature
(0...149) (°C)
37
0
Outdoor temperature at which the floating part of return temperature limitation begins
(–49...+49) (°C)
38
0.0
Slope of floating part of the limitation characteristic for return temperature
(0...4.9)
39
90
Limit value of return temperature (absolute value in °C) during domestic-hot-water charging. If value < 0:
limit value (SERV 39) is only active with normal domestic-hot-water charge (SERV 90), not active when
heating to second setpoint of domestic-hot-water temperature (SERV 92).
.
(–149...149 °C)
T
RFSmax
T
RFSmax(W)
(SERV 39)
T
U
(SERV 36)
T
A
(FF) (SERV 37)
T
A
(SERV 38)
(SERV 35) T
o
S
Limitation values for the primary-side
return temperature
B01627
R
–
37
–
7 000458 003
