Start-Up; Operating Concept; Starting Up The Heat Pump System; Running The Installation Assistants - Vaillant flexoTHERM exclusive VWF 117/4 Installation And Maintenance Instructions Manual

9

Start-up

9.1

Operating concept

→ Operating instructions
9.2

Starting up the heat pump system

1. When you are operating the heat pump system for the
first time after installing the electrical wiring, the install-
ation assistants for the components start automatically.
Set the required values for the components first and
then for the controller.
2. Switch on the power supply.
◁
The basic display appears on the display.
Note
In the case of a restart following a loss of
voltage or a shutdown of the power supply,
the current date and time are automatically
reset by the DCF receiver or, if there is no
DCF reception, you must reset these values
yourself.
9.3

Running the installation assistants

The installation assistant is launched when the heat pump is
switched on for the first time.
Menu → Installer level Configuration
▶
Press to confirm that you wish to start the installation
assistant.
◁
All heating, cooling and hot water requests are
blocked whilst the installation assistant is active.
Note
You cannot exit the installation assistant until
the environment circuit type has been set.
▶
To access the next point, confirm by pressing
case.
9.3.1 Setting the language
1. To confirm the set language and to avoid unintentionally
changing it, press twice.
Conditions: Unknown language set
▶
Press and hold and
▶
Also briefly press .
reset
▶
Press and hold and
language setting option.
▶
Select the required language.
▶
Press twice to confirm this change.
9.3.2 Setting the environment circuit type
The following environment circuit types can be set:
–
Ground/brine
–
Air/brine
–
Groundwater/brine
0020213394_01 flexoTHERM exclusive Installation and maintenance instructions
in each
at the same time.
until the display shows the
9.3.3 Setting the cooling technology
You must set the installed cooling technology.
When using ground/brine as the heat source, active cooling
is limited to a brine output temperature of 40 °C in order to
protect the source/probe borehole. If this temperature is ex-
ceeded (> 40 °C), active cooling mode is switched off. This
limit can only be changed by Vaillant Customer service.
9.3.4 Enabling auxiliary electric heating
On the system controller, you can select whether the auxili-
ary electric heating is to be used for heating mode, hot water
handling mode or both modes. Set the maximum output for
the auxiliary electric heater at the heat pump's operator con-
trol panel here.
▶
Activate the internal auxiliary electric heating with one of
the following output levels.
▶
Ensure that the maximum output for the auxiliary electric
heater does not exceed the output of the fuse protection
for the household electricity system (measuring currents,
see Technical Data).
Note
Otherwise, the home's internal circuit breaker
may trigger if, when there is insufficient heat
source output, the auxiliary electric heater that
is not derated is switched on.
Output levels for the 400 V auxiliary electric heater
–
External
–
2.0 kW
–
3.5 kW
–
5.5 kW
–
7 kW
–
9 kW
9.3.5 Purging the building circuit
▶
Start the check programme P.05 in order to purge the
building circuit. (→ Page 34)
9.3.6 Purging the environment circuit
▶
Start the check programme P.06 in order to purge the
environment circuit. (→ Page 34)
Conditions: Air/brine heat source
–
Programme duration of approx. 1 hour. In addi-
tion to purging, the programme includes a self-
test of the air/brine collector which checks the fol-
lowing points: Phase errors, communication with
outdoor unit, brine pressure, safety cut-out of the
defroster heater, brine pump operation, brine cir-
cuit flow rate, fan, sensor faults, temperature bal-
ancing, calibration of the heat pump brine sensor,
calibration of the air/brine collector brine sensor,
inversion of brine lines, brine circuit purging func-
tion
9.3.7 Telephone number for the competent
person
You can store your telephone number in the appliance
menu.
Start-up 9
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