Factory settings
7
Functions
The primary functionality comprises the
Output control
of the EHS-R immersion heater and an
Ener-
gy manager,
in connection with a
Comparison function.
• The
Energy manager
receives the measured output via the system value
Total real power
and
the set output is specified with the fixed value
F1 Set output
.
• In the
Energy manager
,
Output control
is stored as an included function. This means that the
output to be consumed is specified for
Output control
.
• The purpose of the comparison function is to limit the maximum temperature of the immersion
heater. The threshold for this is set via the fixed value
F2 Maximum temperature
(set to 60 °C at
the factory).
• If the maximum temperature at the immersion heater is reached, the comparison function
issues an enable for the
Output control
to
OFF.
This blocks operation of the immersion
heater.
An
energy meter
also runs, together with a
date-specific memory
. This adds up the consumption of
the immersion heater in kWh.
An optional functionality for DHW heating is also integrated. This is
deactivated
at the factory via the
fixed value
F3 Forced operation, enable
.
• In the function
Time switch
, a time program is stored (default Mo-Su, 17:00 - 22:00 h). Within the
time window, DHW is heated irrespective of the solar yield.
• The DHW temperature is measured with
Temperature 1*
at the immersion heater. This tem-
perature is increased at sensor input
S1
of the EHS-R.
• The maximum temperature limit via the comparison function also affects DHW heating.
• The fixed value
F4 Forced operation, set temp.
specifies the set temperature for normal DHW
heating and for the functionality
Charge once
.
• The
DHW demand
switches the
Output control
with its
Forced operation
.
Suggested installation
*To ensure that
Temperature 1
gives a practical value, the immersion heater's cylinder sensor
S1
must be installed
at the top
of the cylinder. The immersion heater must be installed horizontally in
the cylinder.
A more detailed description of all function modules can be found in the corresponding operating
instructions for freely programmable controllers (
).
