Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Instantaneous DHW heater 23. August 2007
Time program 4 / DHW
For the electric immersion heater, time program 4 / DHW of the local controller is taken
into account.
Example:
0 6121824
h
2358Z26
External thermostat
The storage tank is charged with an external thermostat without setpoint compensation
of the controller.
DHW sensor
The storage tank is charged with an electric immersion heater, with setpoint
compensation from the controller.
To ensure that setpoint compensation operates as required, the external control
thermostat must be set to the minimum storage temperature.
Plant hydraulics
Line no. Operating line
5090 With buffer storage tank
5092 With prim contr/system pump
5093 With solar integration
If there is a buffer storage tank, specify whether the DHW storage tank can draw heat
from it.
When using alternative heat sources, the buffer storage tank temperature is used as a
control criterion for the release of additional heat sources.
It is to be set whether the DHW storage tank receives its heat via the primary controller
or with the help of the system pump (depending on the type of plant).
It is to be set whether the DHW storage tank receives its heat from the solar collectors.
Speed-controlled pump
Line no. Operating line
5101 Pump speed min
5102 Pump speed max
The charging pump motor speed is limited by a minimum and maximum permitted
speed.
To ensure that the pump operates reliably on start-up, it is operated at maximum speed
for the first 10 seconds.
6.18 Instantaneous DHW heater
Setpoints
Line no. Operating line
5406 Min setp diff to tank temp
The maximum DHW temperature setpoint controlled is the current storage tank
temperature minus the adjustable setpoint differential.
El immersion heater
control
With buffer storage tank
With primary controller /
system pump
With solar integration
Charging pump
speed control
RVS63.. only
RVS63.. only