STIEBEL ELTRON WPM - Page 23

COMMISSIONING
Menu
www.stiebel-eltron.com WPM | 23
Menu: SETTINGS
Setting Weather-compen-
sated control
Room tempera-
ture-dependent
control
0 100 0
25 75 25
50 50 50
100 0 100
Heating circuit pump control with remote control
 Set the ROOM INFLUENCE to a value greater than 0.
If the actual room temperature is higher than the set room tem-
perature plus 1K, the heating circuit pump is switched off.
If the actual room temperature is lower than the set room tem-
perature, the heating circuit pump is switched on.
 ROOM CORRECTION
Select ROOM CORRECTION to correct the room temperature shown
by +/-5 K.
 PUMP CYCLES
This parameter affects the behaviour of the heat pump in heating
circuit1.
OFF
The heat pump operates continuously. It shuts down only when
SUMMER MODE is active.
ON
The heating circuit pump switches on and off according to the
outside temperature.
0 10 20 30 40 50 60
< -10
-10
-5
0
5
10
Y
2
1
84_03_01_0039
X Time in minutes
Y Outside temperature in °C
1 Pause
2 Pump runtime
 EXTERNAL HEAT SOURCE
In this menu item, you can specify the parameters of an external
heat source.
An electric threaded immersion heater in the buffer cylinder or a
boiler connected to the heating flow in modulating mode (PWM or
0-10V interface) can be used as an external heat source.
 OFF
 Set the parameter to OFF if you are not connecting an exter-
nal heat source to the system.
 THREADED IMMERSION HEATER
 Set this parameter to ON if an electric threaded immersion
heater is installed in the buffer cylinder.
 Temperature sensor X1.10, incorporated in the threaded
immersion heater in the buffer cylinder, captures the tem-
perature at the buffer cylinder output to the external heat
source's heating system.
The external heat source is actuated at temperatures below the
set DUAL MODE TEMP HZG; its actuation is load-dependent, as the
last stage of a heat pump cascade.
Conditions for activation:
- The temperature falls below the dual mode temperature.
- The heat pump is in operation.
- The actual temperature of the external heat source is lower
than the set temperature. The set temperature of the thread-
ed immersion heater is equal to the buffer cylinder set
temperature.
Conditions for deactivation:
- The actual temperature of the external heat source is high-
er than the set temperature. The set temperature of the
threaded immersion heater is equal to the buffer cylinder set
temperature plus the heating curve gap (parameter HEATING
CURVE GAP).
The actual and set temperature of the external heat source can be
checked in the INFO/ SYSTEM/ EXTERNAL HEAT SOURCE menu.
 BOILER
 Set this parameter to ON if a gas/oil boiler is installed in the
system.
 Temperature sensor X1.10 captures the temperature in the
boiler flow.
 Connect sensor X1.6 to the heating flow of the boiler mixer
circuit.
The external heat source is actuated at temperatures below the
set DUAL MODE TEMP HZG; its actuation is load-dependent, as the
last stage of a heat pump cascade.
The mixer is controlled according to the set temperature. The set
temperature is calculated from the buffer cylinder set temperature
plus the heating curve gap. The mixer is released if the actual
temperature of the external heat source is higher than the set
temperature.
Conditions for activation:
- The temperature falls below the dual mode temperature.
- The heat pump is in operation.
- The temperature must be at least 5K lower than the set boil-
er temperature (parameter SET BOILER TEMPERATURE).
Conditions for deactivation: