Siemens AVS75.39 Series User Manual page 109

For DHW charging
OT limits with DHW
Supplementary source
Release below / above
the outside temperature
With Economy mode
Full charging buffer
Siemens
Building Technologies
Defines the release of the supplementary source for DHW charging:
Locked
The supplementary source will not be released.
Substitute
The supplementary source is released only if the main generator cannot be put into
operation (e.g. in the event of fault).
Supplement
The supplementary source is released if the output of the main generator cannot
satisfy the demand.
Immediate
The supplementary source is always released.
Determines whether the supplementary source, locked by outside air temperature
limits (parameters 3700, 3701), also locks DHW.
Line no. Operating line
3700 Release below outside temp
3701 Release above outside temp
3702 With Economy mode
OFF ¦ On DHW ¦ On
3703 Full charging buffer
Off ¦ On
3705 Overrun time
Operation of the supplementary source is released when the composite outside
temperature lies above or below the set temperature limit.
This enables the 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.
To ensure continuous release of the supplementary source, setting "---" must be
selected on the respective operating lines.
If both release values are enabled, the outside temperature must satisfy both
criteria for the supplementary source to be released .
Defines possible releases for the supplementary source during active Eco mode:
Off
The supplementary source is locked in Eco mode.
On DHW
The supplementary source can be started up for forced buffer storage tank
charging.
On
The supplementary source can be started up for all heat requests.
Off
Boiler does not participate in full charging of the buffer storage tank.
On
Boiler participates in full charging of the buffer storage tank.
The boiler continues to operate until the storage tank is fully charged to achieve a
long runtime.
User manual RVS43.345
The settings in detail
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CE1U2354en_021
2013-09-02