STIEBEL ELTRON WPM - Swimming Pool; Differential Controller 1; 2

COMMISSIONING
Menu
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Menu: SETTINGS
 COOLING CIRCUIT 1/ 2/ 3/ 4/ 5
 SET FLOW TEMPERATURE
Area cooling
The mixer regulates the flow temperature set here.
Fan cooling
When this temperature has been reached during cooling, the com-
pressor is switched off. Under passive cooling, the source and
buffer charging pumps are also switched off.
 SET ROOM TEMPERATURE
The heat pump cools the room down to the room temperature set
here minus a fixed hysteresis of 2K.
 COOLING TYPE
Here you can specify whether the cooling circuit is used for fan
or area cooling.
 SWIMMING POOL
With the swimming pool function, the swimming pool water is
heated to a set temperature by means of a heat exchanger. The
pump connected to terminal X4.12 pumps the heating water from
a buffer cylinder through the heat exchanger. The pump connected
to terminal X4.13 pumps the water into the swimming pool.
The heat pump can also heat the swimming pool without a buffer
cylinder. The pump connected to terminal X4.12 pumps the heating
water through the heat exchanger. The pump connected to termi-
nal X4.13 pumps the water into the swimming pool.
 SWIMMING POOL
 Set whether the swimming pool function should be switched
on or off.
 DEMAND
The swimming pool function can be requested in various ways.
In order for swimming pool water heating to begin, the set con-
ditions must be met and the SWIMMING POOL PROGRAM (in the
PROGRAMS menu) must be active.
 Choose the conditions that activate the swimming pool
function.
 230 V INPUT
Heating of the swimming pool water can be requested via an ex-
ternal signal. As soon as a 230V signal is received at input X4.2,
heating of the swimming pool water commences.
 SENSOR INPUT
If the temperature measured by swimming pool sensor X3.5 is
lower than the sum of the set temperature and hysteresis, heating
of the swimming pool water is started.
 SET TEMPERATURE
With this parameter you can set the set temperature for the swim-
ming pool.
 HYSTERESIS
The value set here specifies the temperature difference from the
set temperature at which heating of the swimming pool water
commences.
 BUFFER OPERATION
If a sensor is connected to terminal X3.4, swimming pool mode is
possible without a buffer cylinder. The swimming pool sensor X3.4
is responsible for switching the heat pump on and off.
 FIXED VALUE
In this menu item you set the temperature required in the heat
exchanger in order to reach the set temperature in the swimming
pool.
 DIFFERENTIAL CONTROLLER 1/2
With the WPE heat pump extension, two differential controllers
working independently of one another can be set up, each con-
trolling one output (X4.10 and X4.11). Output X4.10 is controlled
via differential sensors1.1 (X3.9) and 1.2 (X3.10). Output X 4.11
is controlled via differential sensors2.1 (X 3.11) and 2.2 (X 3.12).
Example for output X4.10
The differential controller function can be used, forexample, to
connect a water-bearing stove to a system with a buffer cylinder.
Here differential sensor1.1 (X3.9) is positioned inside the water
chamber of the stove. Differential sensor1.2 (X3.10) is located
in the buffer cylinder. If the differential between X3.9 and X3.10
exceeds the set start differential and the maximum and minimum
temperature limits are satisfied, output X4.10 is switched on. A
pump connected to output X4.10 supplies the water heated in the
stove to the buffer cylinder.
 DIFFERENTIAL CONTROLLER 1/2
 Set the parameter to ON or OFF.
 START DIFFERENTIAL
Here you can set the temperature differential which must prevail
between both sensors in order to switch on the associated output
(X4.10 or X4.11). If the start differential set here is exceeded, the
associated output is switched on.
 HYSTERESIS
Example for output X4.10
With this parameter you can specify the extent to which the tem-
peratures from differential sensors 1.1 and 1.2 can converge. For
the purposes of the calculation, the hysteresis set here is sub-
tracted from the set start differential. Only when the temperature
differential has reached the start differential minus the set hys-
teresis does the output switch off.