Minimum Temperature Of The Wood-Fired Boiler For Release Of The Pump - Siemens SIGMAGYR RVP540 Basic Documentation

Benefit
Setting
Effect
(cold start)
Effect
(warm start)
166/348
Siemens Building Technologies
HVAC Products
4.112 Minimum temperature of the wood-fired
boiler for release of the pump
• Point of release for the pump of the wood-fired boiler can be defined
Setting range
20...80
The pump of the wood-fired boiler will be released when the adjusted temperature is
reached. But the pump will be put into operation only when the measured temperature
is exceeded by the "Switching differential of the minimum boiler temperature for release
of the pump" (operating line 371) and the "Minimum temperature differential of the
wood-fired boiler" (operating line 369) is reached.
The graph below shows a possible progression of the temperature of the wood-fired
boiler (cold-start = boiler was not in operation before) and the relevant switching states
of the boiler pump (Q10):
Also refer to the graph on operating line 369.
[°C]
ON
Q10
ON
OFF
TV Actual value B22 of temperature of the wood-fired boiler
TR Return temperature B72
Q10 Pump of the wood-fired boiler
- - - Variant TV
370

Minimum temperature of the wood-fired boiler for release of the pump

371 Switching differential of "Minimum temperature of wood-fired boiler for release of the pump"
0 Pump overrun time
385 Maximum duration of the residual heat function
If the pump was in operation before, it will be put into operation again if one of the fol-
lowing criteria is satisfied:
• TV exceeds the sum of operating line 380
perature) and operating line 369 (minimum switching differential of the wood-fired
boiler) plus 4 K
• The pump has not been in operation for at least 15 minutes, the boiler temperature
rises by at least 1 K / min and the minimum temperature differential of the wood-
fired boiler (operating line 369) is satisfied
Basic Documentation RVP540 / RVP550
Description of the heating engineer settings
Unit
°C
TV
TR
(minimum limitation of the return tem-
EXP
Factory setting
60
OFF
t [s]
t [s]
CE1P2488en
18.10.2002