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Building Technologies Boiler Sequence Controller RMK770 CE1P3132en
HVAC Products 10 Heating circuit control 23.04.2009
0
5
10
15
20
25
ToStrDmp
Toeff
t
3131D23
To
To
Main menu > Commissioning > Settings > … or
Main menu > Settings > Heating circuit > Space heating
Operating line Range Factory setting
Building time constant 0…100 h 20 h
Main menu > Settings > Heating circuit > Heating curve or
Main menu > Heating circuit > Heating curve
Operating line Range Factory setting
Proportion of windows 0…100% 50%
10.5.2 Heating curve
The heating curve is defined by 2 curvepoints:
1
:
At the design temperature:
• By the outside temperature ToDe
A
• By the flow temperature SpTFlDe
B
2 : At the theoretical heating limit:
• By the outside temperature ToHi
C
• By the flow temperature SpTFlHi
D
SpTFlDe
SpTFlHi
SpTRN
TFl
TOeff
TODe
sHC
TOHi
B
D
A
C
1
2
3131 D24
The nonlinear heat transmission is considered by the radiator exponent nH. The follow-
ing table gives an overview of the heating systems normally used:
Heat transmission via… Radiator exponent nH
Underfloor heating system 1.05…1.1
Flat radiators 1.26…1.33
Radiators to DIN 4703 1.3
Convectors 1.25…1.45
Settings
Heating curve
Curvepoints
Radiator exponent
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