STIEBEL ELTRON WPM 3

OPERATION
Menu structure
www.stiebel-eltron.com WPM 3| 15
The low end temperature (parameter LOW END TEMPERATURE)
is held for the selected time (parameter DURATION BASE TEMP).
After expiry of this period, the system heats to the maximum low
end temperature (parameter MAXIMUMTEMPERATURE) using
an increase K/day (parameter RISEPERDAY) and holds this max-
imum temperature for the selected time (parameter MAXTEM-
PERATUREDURATION). The system subsequently returns to the
low end temperature using the same steps as for heat-up.
1
7
4 5
3
2
84�03�01�0038
6
Y Temperature
X Time
1 Maximum temperature
2 Low end temperature
3 Low end temperature duration
4 Increase K/day
5 Max temperature duration
6 Start
7 End
If a heating buffer cylinder has been integrated into the system,
the temperature in the buffer cylinder is controlled solely via the
return sensor (fitted at the base of the buffer cylinder). If only the
direct heating circuit 1 is operational, the set values are reduced
by 5K to even out temperature differences in the buffer cylinder.
If 2 heating circuits are operational (second heating circuit is for
underfloor heating system), the mixer in heating circuit 2 regulates
down to the selected set values. The pump for heating circuit 1
is not controlled.
During the heat-up program the appliance often reaches maxi-
mum output. For this reason, energy consumption and noise levels
are comparatively high during screed drying.
After the heat-up process all modified parameters must be reset
to their standard values or system values.
Emergency operation is not possible while the heat-up program
is active.
5.3.6 SILENT PROGRAM 1
For HP types 1/1* (not for WPL 34/47) and 4/4*, the fan speed is
reduced. This reduces the sound level emitted by the heat pump.
For HP types 3/3* and 5/5*, both the fan speed and the compressor
output can be reduced. Both options can be set independently of
one another.
5.3.7 SILENT PROGRAM 2
In this program, the air source heat pump is switched off for the
entire set period and only the internal or external secondary heat
generator is used for heating.
PLEASE NOTE: This program may result in high electricity bills.