Minimum Limitation Of Boiler Temperature (Tkmin) - Siemens RVA63.280 Basic Documentation

Benefit
Description
Setting
Effect
Limitation
Siemens Building Technologies
Landis & Staefa Division
2.21 Minimum limitation of 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 boiler temperature setpoint (setting on line 01
Tkmax Maximum limitation of 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 boiler temperature
81 Minimum limitation of boiler temperature setpoint
2 Maximum limitation of boiler temperature setpoint
OEM
1 Lowest minimum limitation of 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
70
60
50
40
TK
min
30 0
20 10 0
Basic Dokumentation RVA63.280, RVA53.280
Unit
°C
40 50 60
TK
max
w
-10 -20 °C
TA
Factory setting
40
)
OEM
)
OEM
70 80 90 100
Legend
TK boiler temperature
TKw Boiler temperature setpoint
Tkmin Minimum limitation of boiler
temperature
SDK Switching differential
TAgem composite outside
temperature
gem
°C
120
81/184
CE1P2374E
19.04.2001