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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Handling
18.10.2002
2.7.1 Overview of EXP parameters
Line Function
Range
Unit
Resolution Factory
setting
EXP general
180 General frost protection for the plant
0 Inactive
1 Active
0 / 1
–
1
1
Oil- / gas-fired boiler EXP
250 Minimum limitation of the boiler temperature setpoint
EXP (TKmin
EXP
)
8...95 °C
1
40
251 Maximum limitation of the boiler temperature setpoint
(TKmax)
8...120 °C
1
80
252 Switching differential of the boiler temperature (SDK)
0...20
K
1
8
253 Min. limitation of the burner running time
0...10
min
1
4
254 Release integral of burner stage 2
0...500
K*min
1
50
255 Reset integral of burner stage 2
0...500
K*min
1
10
256 Pump overrun time
(after burner OFF)
0...20 min
1
5
257 Operating mode of the boiler
0
Continuous operation (without extended burner running time)
1
Automatic operation (without extended burner running time)
2
Automatic operation (with extended burner running time)
0...2 –
1
1
259 Protective boiler startup
0 None
1
Acting on the consumers and on the boiler pump
2
Acting on the consumers
3
Acting on the boiler pump
0...3 –
1
1
261 control of the boiler pump
0
According to temperature demand
1
Parallel to burner operation
0 / 1
–
1
0
Minimum limitation of the return temperature
280 Minimum limitation of the boiler return temperature EXP
8…line 252
°C
1
8
281 Maintained boiler return temperature with effect on the
consumers (locking signal)
0
With no effect on the consumers
1
With effect on the consumers
0 / 1
–
1
1
283 Switching differential of the bypass pump (SDBP)
0...20
K
1
6
284 Control of the bypass pump
0
Parallel to burner operation
1
According to the boiler return temperature
0...2 –
1
0
285 P-band minimum limitation of the return temperature oil /
gas (Xp)
1...100 K
1
24
286 Integral action time minimum limitation of the return
temperature oil / gas (Tn)
10...873 s 1
90
287 Actuator running time minimum limitation of the return
temperature oil / gas
30...873 s 1
120
Solar plant EXP
300 Maximum temperature collector 1
---
Overtemperature protection OFF
20...350 °C 1
120
301 Maximum temperature collector 2
---
Overtemperature protection OFF
20...350 °C 1
120
302 Hysteresis for maximum limitation of the collector tem-
perature
1...20 °C
1
5
303 Frost protection temperature collectors 1 + 2
---
Frost protection OFF
-20...5 °C
1
-
-
-
304 Maximum storage tank charging time
1...60
min
1
20
305 Maximum
waiting
time
1...40
min
1
5
307 Changeover / startup delay bypass valve / charging
pump K9
1...15 min
1
3
