STIEBEL ELTRON WPF 04 User Manual

36 |WPF | WPF cool www.stiebel-eltron.com
INSTALLATION
Commissioning
13.3.3 Source
Source temperature min
Setting range -10 °C to +10 °C and setting OFF.
!
Material losses
Never operate the appliance with source temperatures
below – 9 °C.
When set to OFF, the source temperature sensor temperature is
not scanned.
The compressor shuts down and the idle time is set, when the ac-
tual temperature drops below the minimum source temperature.
The compressor is enabled again after the idle time has expired
and the fixed hysteresis of 2 K has been exceeded.
This fault, i.e. MIN SOURCE T, is indicated in the display by a flash-
ing warning triangle, and entered into the fault list.
The source pump will always be started 30 seconds earlier than
the compressor, which starts when there is a heat demand coming
from the central heating or DHW side.
Note
The source pump runs on for 60 seconds after the heat
pump has been shut down.
Brine pump rating
The brine pump flow rate can be adjusted here.
The heat source flow rate is set via the temperature differential of
the heat source circuit.
 Operate the appliance in heating or DHW mode. To do so,
switch on the appliance using the parameter BRINE PUMP
RATING in the COMMISSIONING / SOURCE menu.
 Start the setting of the source pump after the heat pump has
run for at least 10 minutes.
The brine pump rating should be selected so that the temperature
differential on the brine side is not exceeded. The setting is made
in the programming unit.
The flow rate on the brine side is not displayed in the program-
ming unit.
Max. temperature differential of heat source circuit
6
1
2
5
4
3
2
1
-5 0 5 10 15 20
84�03�01�0017
Y Max. temperature differential [K]
X Source inlet temperature [°C]
1 Heating flow 35 °C
2 Heating flow 50 °C
Note
You can check the source outlet temperature on the heat
pump manager display under system menu item INFO
TEMPERATURES.
Brine pump run-on time with extractor module
0
50
100
150
200
250
300
350
400
-6 -5 -4 -3 -2 -1 0123 4567 8 9 10
84�03�01�0016
4
1
2
3
Y Brine pump run-on time [minutes]
X Brine inlet temperature [°C]
1 EXTRACT MODULE 30
2 EXTRACT MODULE 60
3 EXTRACT MODULE 120
4 EXTRACT MODULE 180
Source medium
Ethylene glycol
Potassium carbonate
Water
Groundwater module
Extract module 0, 30, 60, 120 and 180
(Only in conjunction with the extractor module LWM 250)

STIEBEL ELTRON WPF 04 Specifications

General

Brand	STIEBEL ELTRON
Model	WPF 04
Category	Heat Pump
Language	English