Actuator Running Time Minimum Limitation Of The Return Temperature Of The Wood-Fired Boiler; Heat Pump; Maximum Switch-Off Temperature; Minimum Switch-On Temperature - Siemens SIGMAGYR RVP540 Basic Documentation

Benefit
Description
Setting
 Note
Description
Setting
Effect
Benefit
Description
Setting
Effect
Siemens Building Technologies
HVAC Products
5.31 Actuator running time minimum limitation of
the return temperature of the wood-fired
boiler
• Setting the actuator running time
Allows adjustments to be made to supplier-specific actuator running times.
Setting range
30...873
The actuator running time is the period of time the actuator requires to travel from one
end position to the other.

Heat pump

5.32 Maximum switch-off temperature

The setting defines the maximum flow temperature permitted for the heat pump.
Setting range
20...140
When the temperature acquired with flow sensor B21 or return sensor B71 exceeds the
maximum switch-off temperature, the compressor will be switched off. The pump will
continue to run for the selected overrun time.
The heat pump will be switched on again when both B21 and B71 have dropped below
the maximum switch-off temperature by the amount of heat pump switching differential
OFF (operating line 421) and the minimum off time has elapsed (operating line 414).

5.33 Minimum switch-on temperature

• Prevents excessive temperature drops at the selected control sensor
The setting defines the minimum temperature at the selected heat pump control sensor.
Setting range
--- / 8...95
--- Function deactivated
If the temperature at the selected control sensor (operating line 420) falls below the
value set here, the heat pump will be put into operation – if there is demand for heat.
If return sensor B71 is present, the controller will also check the temperature acquired
by it. If the temperature at that sensor drops below the minimum switch-on temperature,
the controller will continually restrict the amount of heat drawn by the consumers. As
soon as the minimum switch-on temperature at the return sensor is reached again, the
controller will slowly cancel the restriction of heat consumption (mixing valves of the
consumers will slowly open again).
Basic Documentation RVP540 / RVP550
Description of the EXP settings
Unit
s
Unit
°C
Unit
°C
Factory setting
120
Factory setting
55
Factory setting
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CE1P2488en
18.10.2002