Vaillant geoTHERM SERIES Installation And Servicing page 45

Code function Description
1 = Immediate halt (as soon as contact S1 moves into the open position, the heat
Configuration for pump stops).
stopping the heat 2 = Gradual halt (as soon as contact S1 opens, the speed of the compressor
146
pump if control by S1 gradually reduces. This configuration is used to delay the shutdown of the
contact input compressor after contact S1 switches to the open position and to limit the number
of compressor cycles per hour to 3.
Configuration of
the output between 1 = Unit alarm
147
terminal channels 5 2 = Ambient temperature setting reached
and N
This parameter defines the exterior temperature that is the functioning limit and where
Limit exterior
148 the heat pump stops. In this configuration, only the booster heating functions. See the
temperature (T0)
chapter "Configuring the booster heating".
1 = Ambient temperature
2 = Temperature of water leaving the installation
Choice of display in
3 = Temperature of water returning to the installation
149 the command unit's
5 = Compressor suction temperature
temperature zone
6 = Compressor discharge temperature
7 = Exterior temperature
This temperature defines the external temperature from which the power of the
Exterior temperature heat pump alone is not sufficient to meet the needs of the installation. Below this
150
bivalence point (T1) temperature, the booster heating and the heat pump can function together. See
the chapter "Configuring the booster heating".
Delays for switching This parameter defines the period from which the booster heating is switched on
151
on booster heating when: T0 < exterior T° < T1.
This parameter defines the differential between the installation's water
Differential stop/
152 temperature setting and the water temperature from which the booster heating
start booster heating
switches on when: T0 < exterior T° < T1.
Mode of activation 1 = Always active (demand for hot water is always met)
153 hot-water demand 2 = Activated only in heating modes (demand for hot water is met only in heating
contact S5 mode)
This parameter defines the functioning of the booster heating when: exterior T° < T0.
0 = Continuous functioning
Booster heating
154 1 = ON/OFF functioning depends on the ambient temperature.
functioning
In case of a thermostat fault, switch to mode 3.
2 = ON/OFF functioning depends on the installation's water temperature.
This parameter defines the functioning mode for the main circulator for an external
temperature < T0 (code 148)
Functioning of main
155 0 = Stopped
circulator
1 = ON/OFF cycle identical to the booster heating
2 = Continuous operation
Configuration of the output (connection between terminal channels 12 and N)
0 = Not used
Configuration of
1 = ON/OFF cycle identical to the main pump The water pump works continuously
156 the output between
in case of demand for hot water.
terminals 12 and N
2 = ON/OFF cycle identical to the main pump The pump is halted in case of demand
for hot water.
This parameter defines the functioning mode for the additional circulator for an
external temperature < T0 (code 148)
Functioning of the
157 0 = Stopped
additional circulator
1 = ON/OFF cycle identical to the booster heating
2 = Continuous operation
Differential on the This parameter defines the differential on the ambient temperature setting in the
158 temperature setting case where the parameter 100 is configured to 4 (regulation with the command
from the ambient air unit used as the room thermostat).
Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant
INSTALLATION
Setting
factory Modifiable
setting parameter
Min Max
1 2 2 Yes
1 2 1 Yes
-20°C 65°C -20°C Yes
1 7 1 Yes
30°C -20°C 0°C Yes
20
1 60 Yes
minutes
1°C 20°C 5°C Yes
1 2 1 Yes
1 2 1 Yes
0 2 1 Yes
0 2 2 Yes
0 2 1 Yes
+/- +/-
+/- 0.3°C No
0.2°C 1°C
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