Minimum Limitation Of The Boiler Temperature (Tkmin) - Siemens RVA63.242 User Manual

Benefit
Description
Setting
Effect
Limitation
86/218
Siemens Building Technologies
Landis & Staefa Division
4.28 Minimum limitation of the boiler temperature
(TKmin)
Prevents the boiler temperature from falling below a certain level.
Minimum limitation of the boiler temperature setpoint is a protective function for the
boiler. In addition, minimum limitation of the setting range can be provided with setting
01 .
OEM
Setting range
TKmin OEM...TKmax
TKmin OEM Minimum limitation of the boiler temperature setpoint (setting on line 01
Tkmax Maximum limitation of the boiler temperature setpoint (setting on line 02
The setting ensures that the boiler temperature will not fall below the adjusted minimum
level.
TV
max
akt
min
0 10 20 30
56 Actual value of the boiler temperature
81 Minimum limitation of the boiler temperature setpoint
2 Maximum limitation of the boiler temperature setpoint
OEM
1 Lowest minimum limitation of the boiler temperature setpoint
OEM
If the boiler temperature setpoint reaches the limit value and the demand for heat
continues to drop, the boiler temperature will be maintained at the adjusted minimum
level.
TK
°C
80
TK
w
70
60
50
40
TK
mi n
30 0
20 10 0
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
Unit
°C
40 50 60 70
TK
max
-10 -20 °C
TA
gem
Factory setting
40
)
OEM
)
OEM
80 90 100 120
Legend
T K Boiler temperature
TKw Boiler temperature setpoint
Tkmin Minimum limitation of the
boiler temperature
SDK Switching differential
TAgem Composite outside
temperature
CE1P2373E
26.03.2001
°C