STIEBEL ELTRON WPM - Page 28

COMMISSIONING
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28 | WPM www.stiebel-eltron.com
Menu: SETTINGS
 HYSTERESIS
If the sum of the actual temperature and the selected hysteresis
is greater than the selected set temperature, the external heat
generator is switched off.
 MIXER DYNAMICS
With this value, the control characteristics of the installed mixer
can be adjusted.
Setting Effect
< 100 Faster control characteristics
100 Standard value
> 100 Slower control characteristics
 HEATING CURVE GAP
With this parameter, you can set how large the temperature dif-
ferential to the set heating curve has to be in order to switch the
external heat generator off again.
 SOFT START TEMPERATURE
With this parameter, you can set the minimum temperature in the
external heat generator at which the circulation pump starts. The
circulation pump helps the heat generator to pass the condensa-
tion point quickly.
 DELAY
With this parameter, you can specify how much time must elapse
before the external heat generator is switched on (after the SOFT
START TEMPERATURE has been undershot).
 IDLE TIME
With this parameter, you can set how long the external heat gen-
erator remains off for between two demands.
 TYPE OF OPTIMISATION
The heating system can be optimised in its dual mode operation.
 ECO DRIVE
With this parameter, you can set the balance between ecological
and economical operation.
Setting Effect
0 Purely ecological operation
10 Purely economical operation
 ECONOMICAL
In this menu, you enter the parameters for economical optimisa-
tion of the dual mode point.
 PEAK TARIFF PRICE
 Enter the current electricity tariff price.
 OFF-PEAK TARIFF PRICE
 Enter the current electricity tariff price.
 GAS PRICE
 Enter the current gas price.
 OIL PRICE
 Enter the current oil price.
 ECOLOGICAL
In this menu, you enter the parameters for ecological optimisation
of the dual mode point.
 ELECTRICITY CO2 EMISSIONS
 Enter the emissions value of your electricity tariff.
 GAS CO2 EMISSIONS
This is a standard value. The value does not normally need to be
changed.
 OIL CO2 EMISSIONS
This is a standard value. The value does not normally need to be
changed.
 HEAT PUMP SETTING
 LOWER APP LIMIT
With this parameter, you can specify the lower application limit
of the heat pump. Below the outside temperature that is set here,
the heat pump is shut down. Heating demand will be covered by
the external heat source alone.
 BLOCKING TIME EVU
During the power supply utility’s blocking time, the heat pump
cannot meet the heating demand. With this parameter, you can
specify the behaviour of the external heat source during blocking
time.
OFF
During blocking time, the external heat source assumes responsi-
bility for heating even above the dual mode temperature.
1-10 hours
If the external heat generator is not to provide heating during a
tariff blocking time, the required start delay can be specified in
hours.
 Set the number of hours of tariff blocking time until the ex-
ternal heat generator should start providing heating. Confirm
the selection with OK.