Siemens RVS41.813 - 6.15 Supplementary source (only RVS41...)

6.15 Supplementary source (only RVS41...)
A supplementary source can be operated either independently (e.g. in a zone), or in
addition to the main source (e.g. heat pump).
Control of the supplementary source is based on the "collected" common flow
temperature setpoints, also considering the state of the internal main source or
cascade.
Operating mode
Line no. Operating line
3700 Release below outside temp
3701 Release above outside temp
Only RVS41..
Operation of the supplementary source is released only when the composite outside
temperature lies above or below the set temperature limit.
Release belo
w / above the
outside temperature
This enables t
he supplementary source to lock in a selected outside temperature range
in order to attain bivalent operation of supplementary source and heat pump. Also refer
to operating line 2910.
TAgem
BZ3701
BZ3700
1
0
ZE
0.5°C
0.5°C
TAgem Composite outside temperature
ZE Supplementary source
To ensure continuous release of the supplementary source, setting "---" must be
selected on th
e respective operating lines.
Overtemperature protection
Line no. Operating line
3705 Overrun time
Only RVS41..
Overrun time of the release for the external source:
If the integral indicates another heat deficit before the overrun time has elapsed, the
release remains activated.
If the set overrun time elapses before the common flow temperature drops below the
common flow temperature setpoint, the release is also deactivated.
Control
Line no. Operating line
3720 Switching integral
3722 Switching differential Off
3723 Lock time
Only RVS41..
The temperature-time integral is a continuous summation of the temperature differential
Sw
itching integral
over time. In this case, the d
ecisive criterion is the difference by which the temperature
lies above or below the common flow temperature setpoint.
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Siemens Switzerland Ltd User manual RVS61.843, RVS41.813 CE1U2355en_02
HVAC Products 6 The settings in detail 28. September 2009