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Connected
4 mm²
PV power
~325 W ᵖ
≤ 18 m
~650 W ᵖ
≤ 11 m
~975 W ᵖ
≤ 9 m
Recommended cable length (there and back) for
different nominal powers and cross-sections
Connection of an external power supply
IMPORTANT!
Only use power supply units recom-
mended by the manufacturer. Non-compliance will
invalidate the warranty and may damage the water
heater.
External power supply units feature extended use of
the photovoltaic boilers. For example, long periods
of bad weather can be bridged by connected AC pow-
er supply units (model number: PSU-12, PSU-18).
Furthermore, you have the option of converting sur-
plus energy from photovoltaically charged accumu-
lators into heat by the water heater. For detailed
information, please refer to the description of the
respective unit.
Operation
WARNING!
This device may only be operated by
a person (including children over the age of 8) with
reduced physical or mental capabilities if they are
supervised or have been instructed in the use of the
appliance by a responsible person. Children must be
supervised to prevent them from playing with the
appliance under any circumstances. It is forbidden
for children to clean or operate the water heater.
Operation
Switch On:
Press the
Display:
The present water temperature is shown
on the display.
• POWER IN: Input power of the PV modules
6 mm²
10 mm²
≤ 27 m
≥ 27 m
≤ 16 m
≥ 16 m
≤ 13 m
≥ 13 m
- button for three seconds.
• VOLTAGE: Input voltage of the PV modules
• EXT SUPPLY: Connection of an external supply
• USED PV ENERGY: Total PV energy utilised
Menu Navigation:
pressing the button again, you jump to the next page
in the menu.
Settings:
Press the
ows individual adjustments on the unit to be made.
Please note: The adjustments are only active when
an external energy supply is connected to the photo-
voltaic water heater.
• CHANGE MIN. TEMPERATURE: Select the
desired minimum temperature by pressing the
- button.
• CHANGE SYSTEM MODE: Select the desired
mode by pressing the
(PV HOME) is set as the factory default.
Quick guide: System modes
Mode 1 (PV HOME)
For the direct connection of photovoltaic modules.
Plus a fothermo power supply (can be purchased
separately) if desired.
Mode 2 to 6
For the connection of external energy sources such
as a battery. A fothermo battery cable is needed
and can be purchased separately. More detailed
information can be found in the respective product
description.
Switch off:
Press the
Further important notes
Leakage of water
The pressure relief valve can drip during the opera-
tion of the water heater due to the expansion of the
water while heating. Ensure that the leaking water
is directed to a collection container or a drain. The
dripping of water does not indicate a defect. The
side valve opening must not be closed under any
circumstances.
13
Press the
- button briefly. By
- button repeatedly. This all-
- button. Mode 1
- button for three seconds.
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