STIEBEL ELTRON WPF 5 basic User Manual

OPERATION
Operation
www.stiebel-eltron.com WPF basic | 5
or the DHW circuit. DHW is heated by pumping the heating water,
which has been heated by the heat pump, through an indirect coil
in the DHW cylinder, where it transfers its energy to the DHW.
The appliance is equipped with an electric emergency/booster
heater (DHC). If the dual mode point is undershot in mono mode
operation, the electric emergency/booster heater is activated to
safeguard heating operation and the provision of high DHW tem-
peratures. If the same thing happens in mono energetic operation,
the electric emergency/booster heater is activated as a booster
heater.
The equipment is regulated by an integral, weather-compensated
return temperature control (WPMiw heat pump manager).
The WPMiw also regulates the DHW heating to the required tem-
perature. DHW heating will be completed automatically by an
integral electric booster heater, if either the high pressure sensor
or the hot gas limiter of the heat pump responds during DHW
heating, subject to the ECO function being enabled. Subject to the
ECO function being enabled, the DHW heating will terminate and
the set DHW value overwritten with the actual DHW temperature
that has been achieved.
The WPMiw also controls the integral electric booster heater. No
other heat source can be switched.
3.1 Energy saving tip
- Heat pumps operate with particular economy and environ-
mental responsibility when they work with a maximum flow
temperature of 35 °C. Low flow temperatures can be achieved
by using area heating systems (e.g. underfloor heating or
wall heating systems).
- Size radiators so that the maximum required flow tempera-
ture does not exceed 45 °C.
- Activating the control parameter “Pump cycling” can reduce
the power drawn by the circulation pump. In this connection,
refer to your local heating contractor.
- When activating the “DHW ECO” parameter, the heat pump
heats DHW exclusively on its own, i.e. without the additional
electric booster heater. In that case, the DHW temperature is
automatically limited to that value, which the heat pump can
actually achieve. If, for reasons of pasteurisation, you want to
heat the cylinder to 60 °C at least once every day, activate the
“PASTEURISATION” parameter. In this connection, refer to
your local heating contractor.
Summary of WPMiw functions
- RS 232 interface for adjustment and monitoring via a PC
- System expansion through the FEK and FE7 remote control
units
- Input of the system and heat pump frost protection limits
- At least 24 h power reserve for the clock
- Automatic pump kick-start
- Reset option
- Stored fault list with precise fault code indication, together
with date and time display
- Fast and precise fault diagnosis with a system analyser incl.
temperature scanning of heat pumps and peripherals without
additional equipment
- Factory settings for time switch programs for all heating and
DHW circuits
4. Operation
WPMiw heat pump manager
PRGPC Reset Auto
Raumtemp. 2
Raumtemp. 1
Warmwassertemp.
Zeit / Datum
Ferien / Partyprog.
Info Temperaturen
Heizkurven
Heizprogramme
Warmwasserprog.
Inbetriebnahme
1456
3
2
ROOM TEMP HCI
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Room temp. 1
DHW temp.
Time / Date
Holiday / Party prog.
Info temperatures
Heating curves
Heating prog
DHW program
Start up
Room temp. 2
1 Rotary selector
2 Rotary selector Reset / Auto
3 Appliance menu
4 Programming key
5 Programming indicator
6 Optical interface RS 232
System status display
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9
8
7
6
5
4
3
2
1
10
ROOM TEMP HCI
1 Compressor 1
2 Buffer cylinder primary pump
3 Cooling (only with a suitable hydraulic circuit)
4 Electric emergency/booster heater (DHW heating)
5 Electric emergency/booster heater (heating)
6 DHW heating
7 Circulation pump, heating circuit 1 “radiator circuit”
8 Circulation pump, heating circuit 2 “mixer circuit”
9 Mixer close
10 Mixer open

STIEBEL ELTRON WPF 5 basic Specifications

General

Brand	STIEBEL ELTRON
Model	WPF 5 basic
Category	Heat Pump
Language	English