Special information
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3
sPeCial inFormation
- The appliance may be used by children aged 8
and up and persons with reduced physical, sen-
sory or mental capabilities or a lack of experience
and know-how, provided that they are supervised
or they have been instructed on how to use the
appliance safely and have understood the result-
ing risks. Children must never play with the ap-
pliance. Children must never clean the appliance
or perform user maintenance unless they are
supervised.
- Use a permanent connection to the power supply.
Ensure the appliance can be separated from the
power supply by an isolator that disconnects all
poles with at least 3 mm contact separation.
- Maintain the minimum clearances to ensure trou-
ble-free operation of the appliance and facilitate
maintenance work.
- In dual mode operation, return water from the
second heat generator may flow through the heat
pump. Please note that the return water tempera-
ture may be a maximum of 60 °C.
- Cooling mode is only possible in conjunction with
the WPAC 1 cooling module. Set parameter COOL-
ING to ACTIVE COOLING. The COOLING parameter
will only be shown if a FEK or FE 7 remote control
is connected. Cooling mode is only possible in
summer mode.
- The air outlet in the knurled cap of the quick-ac-
tion air vent valve must not point towards the
MFG PCB. Close the quick-action air vent valve
again after venting.
- Maintenance work, such as checking the electri-
cal safety, must only be carried out by a qualified
contractor.
- We recommend an annual inspection (to establish
the system's current condition), and maintenance
by a qualified contractor if required (to return the
system to the desired condition).
- Never interrupt the power supply, even outside
the heating period. The system's active frost pro-
tection is not guaranteed if the power supply is
interrupted.
- There is no need to shut the system down in
summer. The heat pump manager has an auto-
matic summer/winter changeover.
dHW cylinders
- Regularly activate the safety valve to prevent
it from becoming blocked e.g. by limescale
deposits.
- Drain the DHW cylinder as described in the chap-
ter "Installation / Maintenance / Draining the
DHW cylinder".
- Install a type-tested safety valve in the cold water
supply line. For this bear in mind that, depending
on the static pressure, you may also need a pres-
sure reducing valve.
- The safety valve discharge aperture must remain
open to the atmosphere.
- Install the safety valve discharge pipe with a con-
stant fall to the discharge outlet.
- Size the discharge outlet so that water can drain
off unimpeded when the safety valve is fully
opened.
