fothermo PVB-30-AC User manual

EN
PHOTOVOLTAIC
HYBRID WATER HEATER
(PVB-30-, -80-AC)
Technical description,
installation, operation and
maintenance instructions,
warranty conditions
DE
PHOTOVOLTAISCHER
HYBRID BOILER
(PVB-30-, -80-AC)
Technische Beschreibung,
Montage-, Betriebs- und
Wartungsanleitung,
Gewährleistungsbedingungen
use the power of the sun
USER MANUAL
BEDIENUNGSANLEITUNG

2
EN
TABLE OF CONTENTS
SCHEMATICS OF THE MANUFACTURER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5
SPECIFICATIONS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
SYSTEM MODES� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
ASSEMBLY� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
CONNECTION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
FURTHER INFORMATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10
GENERAL WARNINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
FURTHER IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CONNECTION TO THE WATER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ELECTRICAL CONNECTION - PV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CONNECTION OF AN EXTERNAL AC-REHEATING: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MALFUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ENVIRONMENTAL PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ZEICHNUNGEN DES HERSTELLERS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 18
SPEZIFIKATIONEN� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 19
SYSTEM MODI � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 20
MONTAGE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �21
ANSCHLUSS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 22
WEITERFÜHRENDE INFORMATIONEN � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 23
ALLGEMEINE WARNHINWEISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SICHERHEITSHINWEISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
WEITERE WICHTIGE HINWEISE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
TECHNISCHE DATEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
MONTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
ANSCHLUSS AN DIE WASSERLEITUNG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
ELEKTRISCHER ANSCHLUSS - PV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
ANSCHLUSS EINER EXTERNEN AC-NACHHEIZUNG: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
BETRIEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
WARTUNG UND INSTANDHALTUNG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
STÖRUNGEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
UMWELTSCHUTZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
GEWÄHRLEISTUNGEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CONTACT
CONTACT / KONTAKT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 36
3
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INHALTSVERZEICHNIS

4
EN
IMPORTANT!
Please read these operating instructions carefully
before installing and commissioning the hot water
tank!
WICHTIG!
Bitte lesen Sie diese Bedienungsanleitung vor
Montage und Inbetriebnahme des Warmwasser-
speichers sorgfältig durch!
CONTACT
CONTACT / KONTAKT
fothermo System AG
Im Starkfeld 45b
89231 Neu-Ulm
Germany
[phone]
[e-mail]
Registry court Ulm: HRB 739609
VAT: DE329022123
www.fothermo.com

5
EN
SCHEMATICS OF THE
MANUFACTURER
DESCRIPTION
1 Water inlet
2 Water outlet
3 Combined valve
4 Rotary knob with thermostat
5 Electronic control
PHOTOVOLTAIC WATER HEATERS
Model PVB-30-AC PVB-80-AC
Volume 30 80
Figure 1 | 2 |3
Dimensions
(mm)
A 560 835
C 155 185
D 387 462
E 80 96
F 410 484

6
EN
SPECIFICATIONS
NOTE: Only 36 cell and 60/120 cell photovoltaic modules should be connected to the water heater.
UNIT 30 LITER 80 LITER
PHOTOVOLTAIC WATER HEATER
Product model PVB-30-AC PVB-80-AC
Volume l 29 77
Rated pressure MPa 0,7 0,7
IP class 24 24
Gross weight (± 3%) kg 15 25
Dimensions (length, width, height) cm 40x40x60 47x48x90
Check and pressure relief valve
Cathode protection
Emailed protection
Insulation
Energy eiciency class C C
Water connection G½ (M) G½ (M)
Integrated reverse polarity protection
Digital display
CE - certied
PHOTOVOLTAIC INPUT
Max. photovoltaic heating power W 550 550
Max. photovoltaic current consumption A 15,5 15,5
Max. water temperature °C 65 65
Integrated MPP tracker
Recommended photovoltaic power Wᵖ300 – 600 600– 1200
Max. connected photovoltaic power Wᵖ2000 2 000
Max. open circuit voltage Voc 42,4 42,4
Photovoltaic connector MC4 MC4
REHEATING VIA 230 V POWER GRID
Type of reheating directly via the wall socket
Heating power W 1500 1 500
Adjustable water temperature range °C 10 - 75 10 - 75
WATER HEATING DEPENDING ON THE
CURRENTLY AVAILABLE PHOTOVOLTAIC
POWER
200W °C/ h 6 2
400W °C/ h 12 4,5
550 W °C/ h 16 6

7
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MODE PICTURE DESCRIPTION ENERGY SOURCE
1.
Photo-
voltaic
The boiler is primarily powered by-
photovoltaic current. If no solar energy
is available, the integrated mains current
reheating function can optionally be used
to heat the water to the set minimum
temperature on the rotary knob.
PV module
+ 230 V reheating
2.
12 V -
battery
Via the MC4 contact plugs, a battery can
also be connected. As soon as the connec-
ted battery reaches a voltage of 13.5 V, the
excess energy is used to power the boiler.
This happens while the battery is being
charged.
12 V battery
Approved:
LiFePO4, lead acid
battery
3.
24 V -
battery
Via the MC4 contact plugs, a battery can
also be connected. As soon as the connec-
ted battery reaches a voltage of 27 V, the
excess energy is used to power the boiler.
This happens while the battery is being
charged.
24 V battery
Approved:
LiFePO4, lead acid
battery
SYSTEM MODES

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ASSEMBLY
PHOTOVOLTAIC WATER HEATER – PVB-30-, AND 80-AC
The 30 and 80 litre boiler must be installed
vertically on a wall that is at a 90° angle
to the oor.
on the back
2� 3�1�
A
1
2
3
4
A
DESCRIPTION
1 Wall
2 Plate
3 Stud
4 Nut

8
3
1
2
56* 47
9
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power PVB-30-AC PVB-80-AC
200W 6°C/h 2°C/h
400W 12°C/h 4,5°C/h
550W 16°C/h 6°C/h
HEATING TIME OF THE WATER DEPENDING ON PV-POWER
NOTE
The values given in the table are intended as a gui-
deline. The heating times depend on many factors
(power, ambient air temperature, water withdrawal)
and may dier from reality. The greater the connec-
ted photovoltaic power, the more the water can be
heated on days with low solar radiation. The water
is heated with a maximum power of 550 W, even if
more photovoltaic power is available.
1Water heater
2Water inlet
3Water outlet
4shut-o valve*
5combined check and
pressure relief valve
6Pressure reducing
valve*
7Cold water
8Hot water
9Device plug for
external mains current
10 Power cable*
*not included
* necessary if water pressure
> 0.5 MPa (5 bar)
CONNECTION
9
10
power PVB-30-AC PVB-80-AC
1500W 45°C/h 15°C/ h
HEATING TIME OF THE WATER WITH 230V REHEATING

FURTHER INFORMATION
10
EN
GENERAL WARNINGS
Be sure to carefully read the instructions and war-
nings in this manual before installing and operating
the water heater. The information contained in this
manual is intended to familiarize you with the water
heater, the rules of its correct and safe operation, and
the minimum requirements for its maintenance and
servicing. Furthermore, you are obliged to make this
manual available to the qualied persons who will
install and potentially repair the appliance. The ins-
tallation of the water heater and the verication of its
functionality is not within the distributor's warranty
obligation nor the manufacturer.
These instructions should always be kept near the
appliance for future reference. Compliance with the
rules here described is part of the measures for the
safe use of the product and is considered part of the
warranty conditions.
SAFETY INSTRUCTIONS
WARNING! There is a risk of burns or scalding when
using the appliance!
WARNING! This appliance may be used by children
of age over 3 years old and persons with reduced
physical, sensory or mental capabilities, or lack of
experience and knowledge, where they are under
supervision or instructed about the safe use of the
appliance and understand the dangers. Children
must not be allowed to play with the unit! It is abso-
lutely forbidden that children undertake cleaning or
servicing of this appliance! Children aged from 3 to 8
years are only allowed to operate the tap connected
to the water heater.
IMPORTANT! Only qualied persons may install the
water heater and connect it to the water pipe follo-
wing the specications given in this manual and the
relevant local regulations. The protective devices
provided or recommended by the manufacturer, as
well as all other assemblies, are UNCONDITIONALLY
to be installed!
IMPORTANT! Be sure to ll the water heater with
water before connecting it to the electrical supply!
Failure to comply with the electrical connection con-
ditions aects the safety of the appliance, whereby
the water heater must not be operated.
IMPORTANT! Observe the maximum permissible
pressure (see chapter: Technical data).
FURTHER IMPORTANT NOTES
• The appliance is under pressure. During heating,
expansion water may drip from the pressure
relief valve.
•
Operate the pressure relief valve regularly to
prevent it from being stuck, e.g. due to lime-
scale deposits.
• Install a type-tested pressure relief valve in the
cold-water supply line. Note that depending on
the pressure of the supply, you may also need a
pressure reducing valve.
•
Mount the pressure relief valve with the opening
facing down.
• Mount the pressure relief valve and the drain-
pipe with a steady downward slope in a frost-
free room.
• Dimension the drainpipe to allow the water to
ow o unhindered when the pressure relief
valve is fully open.
• The pressure relief valve opening must remain
open to the atmosphere.
•
This device contains a support battery, which is
Dear clients, thank you for choosing device from fothermo system AG - Germany!
It will be a trustworthy helper in your household for many years because in its production
we have combined high quality materials and innovative technologies. To be sure of its
hopeful and trouble-free operation, please read the installation and operating instruc-
tions carefully.
WARNING! Before installation and operation with the appliance, read carefully the present manual!

11
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not replaceable. It is necessary for the display
to function at night. A defect does not limit the
basic functionality.
• This unit may be operated up to an altitude of
4000 m above sea level.
•
Reheat Function is optional. You can either only
use PV-energy or PV-energy combined with re-
heat-power.
TECHNICAL DATA
This water heater can provide hot water from the
public water supply system for several consumers.
The water used for heating must comply with the
requirements in the normative documents for do-
mestic water, in particular: Chloride content up to
250 mg/l; electrical conductivity more than 100 μS/
cm, pH value 6,5-8 for enamelled hot water tanks.
The thermal insulation consists of CFC-free poly-
urethane foam.
The maximum electrical power with PV-energy of
the water heater is 550 W. The actual power con-
sumption of the heating element depends on the
connected photovoltaic power as well as on the
radiation strength provided by the sun. The water
is heated to a maximum of 65 °C to ensure scalding
protection. Detailed information can be found in the
data sheet or on the nameplate. In addition to the
photovoltaic power, an external reheating with 1,5
kW can be connected. The minimum temperature
can be set with a rotary control.
The water heaters are equipped with a combined
check and pressure relief valve (Table 1, No. 5) to pre-
vent overpressure during appliance operation. The
water tanks are made of steel with a high-strength
enamel coating and additional cathode protection
provided by a magnesium anode.
ASSEMBLY
The water heater can be installed only in normal
re safeguarded premises and where temperature
cannot fall under 0 °C. The availability of a siphon
on the installation for waste waters as during normal
usage of the water heater, water may leak from the
safety valve aperture. At the same time the siphon
will facilitate the water tank maintenance, preven-
tion and servicing operations when water needs to
be drained out of the water tank.
When selecting a suitable installation location for
the water heater, the following must be considered:
• Wall type and material,
• dimensions of the unit,
• mounting type,
• arrangement of the fastening elements for wall
mounting,
•
arrangement of the pipes and the degree of
protection against water leakage.
The appliance must be mounted where it is protec-
ted against water dispersion or water pouring over.
In order to reduce heat loss it is recommended to
keep minimum distance between the heater and the
places where the hot water is used. If you purchased
a water heater with factory-tted power cord with
plug, the unit cannot be installed in a wet premise!
The location of the device must comply with the
requirements for the electric installation and its con-
tact. It is obligatory that there are spaces provided
between the appliance and the surrounding walls
and the ceiling of the premise, as follow:
• For vertical water heaters – at least 70 mm bet-
ween the appliance and the ceiling; at least 50
mm between the appliance and the side wall; at
least 350 mm below the appliance to facilitate
servicing and possible repair.
The water heater should be installed steadily on the
wall of the premises. For this purpose steel bolts
(studs), tightly xed in the wall, with diameter 10-12
mm are used. The xing elements should be se-
cured against pulling aside the wall – they should
be anchor or passage bolts (depending of the wall
construction material). It is recommended that the
elements on which the heater will be suspended are
designed for three times greater loads than the ap-
pliance total weight and located in the water therein.
Installation of the water heater on decorative walls
(made of single bricks or of other light materials) is
strictly forbidden. On Fig. 1,2,3,7 and in the tables
are shown the distances between the bolts (studs)
for mounting the units. Vertical water heaters of 150
liters are equipped with special type of suspension
plates and correspondingly the distance between
the bolts (studs) diers from that of other models
and modications.
WARNING! The bearing plates of horizontal water
heaters must be securely clamped to the premise
wall. Under the bolts heads (nuts on studs) must be

12
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placed support washers! A drilling hole template is
printed on the product packaging.
The installation site must comply with the require-
ments of the electrical installation. During installa-
tion, provide suicient distance to adjacent walls
and suicient space under the unit for the water
and photovoltaic connections.
CONNECTION TO THE WATER
SUPPLY
When connecting the device to the water supply,
please observe the indicated arrows and rings
around the cold and hot water pipes (supply and
return pipes). The cold-water pipe features a blue
ring and is marked with an arrow pointing towards
the pipe. The hot water pipe is indicated by an arrow
pointing out of the pipe and a red ring.
The water heater is equipped with a combined check
and pressure relief valve, which is included in the
product packaging and MUST be installed on the
cold-water pipe. The arrow on the body of the valve,
which indicates the direction of water ow through
the valve, must be followed during this installation.
WARNING! The absence or improper installation
of the combined valve supplied with the product is
grounds for voiding the product warranty.
WARNING! It is FORBIDDEN to install any kind of
shut-o ttings between the combined valve and the
water heater! It is absolutely forbidden to obstruct
the lateral opening of the combined valve and/or
to block its lever!
The pipe connectors have male G½ threads.
The water heater operates by the pressure of the
water pipe. The water pressure of the water supply
system should be higher than 0,1 МРа (1 bar) and
lower than 0,5 МРа (5 bar). If the pressure of the
water pipe exceeds 0,5 MPa, a pressure reducing
valve must be installed.
If additional equipment, which is not included in
the standard delivery, must be used to comply with
local regulations, they must be installed according
to these specications.
In case the water pipes are made of copper or other
metal which diers from the metal of the water tank,
as well as if connecting elements made of brass are
used, non-metal ttings must be installed on the
supply and return side of the water heater (dielec-
tric ttings).
WARNING! The installation of any shut-o or non-
return ttings between the pressure relief valve and
the water heater, as well as blocking the side opening
of the pressure relief valve and/or locking its lever
is prohibited!
A drainage system to remove any water that may
drip from the side opening of the pressure re-
lief valve is recommended. The drain line must
be designed with a constant downward slope in
a frost-free environment and must remain open.
Aer connecting the water heater to the water sup-
ply, ll the tank with water. The sequence of steps
to be performed is:
• Fully open the hot water tap of the most distant
mixing tap.
• Open the shut-o valve. (Table 1, No. 4)
•
Wait until the air is released from the system and
a strong jet of water ows from the mixer tap.
Let the water run for about 30 seconds.
• Close the hot water tap of the mixer tap.
• Li the small lever of the pressure relief valve
(Table 1, No. 5), wait 30-60 seconds until a strong
stream of water ows out of the side opening
of the valve.
• Loosen the valve lever.
WARNING! If no water or only a thin stream of wa-
ter ows out of the valve opening, this indicates a
malfunction. A possible contamination of the water
pipe might be present. The fault must be eliminated
before the unit is put into operation.
IT IS FORBIDDEN to proceed with appliance elec-
tric connection before eliminating the reason for
malfunction!
WARNING! Failure to comply with the requirements
for connection to the water supply system may cause
partial lling up of the water tank and malfunction of
the heating element, or when the combined valve is
not installed at all or has been improperly installed
this may even cause destruction of the water tank,
the room and/or other damages to tangible and in-
tangible property. Such consequences are not within
the scope of manufacturer or seller warranty liabili-
ties and shall be at the expense of the party, which

13
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has not observed the present manual instructions.
WARNING! The combined check and pressure relief
valve is one of the protective devices that ensure
the safe operation of the water heater. The use of
the water heater with a damaged or removed/unas-
sembled combined check and pressure relief valve
(safety valve) is STRICTLY PROHIBITED!
The pressure relief valve can also be used to drain
the water from the tank if desired. In such case, pro-
ceed as follows:
• Disconnect the water heater from any live elec-
trical wiring.
• Disconnect the cold-water inlet.
•
Open the hot water tap of the mixing tap or dis-
connect the hot water pipe (return pipe) of the
water heater.
• Li the small lever of the pressure relief valve
(Table 1, No. 5) and wait until no more water
leaves the valve.
•
WARNING! The running water can be hot – risk
of scalding.
These steps do not still secure the complete draining
of the water out of the tank. It is completed only
by a qualied person because it requires complete
disconnection of the appliance electric circuit and
dismantling the water tank ange.
WARNING! It is STRICTLY PROHIBITED to turn on
the heater power while the water tank is partially or
completely emptied of water! Do not forget to ll the
tank with water before putting it back into operation.
WARNING! The coolant circulation through the heat
exchanger of a water heater equipped with such de-
vice is PROHIBITED when the water tank is partially
or completely emptied of water.
WARNING! When draining the water out of the water
tank all necessary precautions must be taken to
prevent damages from owing out water.
IMPORTANT! In Denmark, Sweden, Norway and
Finland, the connection of the water heater to the
public water supply may only be performed using
a suitable pressure reducing valve. The local regu-
lations must be observed.
ELECTRICAL CONNECTION - PV
WARNING! Any electrical connection may only be
performed when the water heater is lled with water.
IMPORTANT! At the PV-input the water heater is po-
wered by direct current. The water heater is protec-
ted against electric shock "class ІII" and may only be
supplied with safety extra-low voltage (SELV). Only
power sources recommended by the manufacturer
may be connected. A faulty and/or unsuitable power
supply involves a high risk and is likely to cause an
accident. The connection cables of the device must
be replaced if they are damaged.
IMPORTANT! Photovoltaic modules may ONLY be
connected in PARALLEL. When connecting more
than one photovoltaic module, always use a sui-
table connector for parallel connection. For more
information, refer to the illustration "Parallel PV-
Connector". Connecting photovoltaic modules in
series will damage the water heater.
Connection of PV-modules in parallel conguration
only! Serial connection will damage the unit!
The electrical connection of the water heaters is
performed using the factory supplied MC4 plugs.
Check the functionality of the appliance aer the
electrical connection has been performed. When all
supply connections are removed, the water heater is
completely disconnected from the power sources.
Pay attention to correct pola-
rity when connecting!
Parallel PV-Connector

14
EN
Connection of PV modules
IMPORTANT! The installation and electrical parallel
connection of PV modules may only be carried out
by a qualied person and may not endanger third
parties. When installing the photovoltaic modules,
the locally prevailing rules and laws must be com-
plied with.
IMPORTANT! Keep cables out of the way to avoid
tripping over them or getting caught. There is a risk
of injury. The cables must be fastened in such a way
that no tensile load is applied to the connectors.
Furthermore, it must be ruled out that the cables and
connectors rub against surfaces and edges (e.g. in
wind). The cables must not lie in water permanently.
IMPORTANT! Only photovoltaic modules with a
maximum of 60 resp. 120 cells and an open-circuit
voltage of 42,4 V may be connected.
• Photovoltaic modules must be connected cor-
rectly using the factory supplied MC4 plugs.
•
You may connect up to ve modules in parallel.
Depending on the module, this corresponds to
an MPP output of approximately 1 500 Wᵖ.
Dimensioning of the required photovoltaic power:
•
The higher the number of hours of sunshine per
day, the smaller the required PV power.
• The warmer the water taken from the pipeline,
the lower the required PV power.
•
Dimension the required photovoltaic power
according to the months with the lowest solar
radiation in which the photovoltaic water heater
will be in operation.
•
The greater the amount of hot water consumed
per day, the larger the PV power required.
The following table serves as a guideline for dimen-
sioning the photovoltaic power needed depending
on the climatic conditions:
climatic
conditions PVB-30-AC PVB-80-AC
countries
with low
sunshine e.g.
Northern
and Central
Europe
600Wᵖ1 200Wᵖ
sunny count-
ries
e.g. Southern
Europe and
Africa
300Wᵖ600 Wᵖ
These values given are guidelines. Depending on the
conditions prevailing on site and the specic con-
ditions of consumption, the appropriate design of
the photovoltaic output may vary from the values
described.
Extension of the Photovoltaic Line
When extending the photovoltaic cable, the MC4
contact plugs must be properly attached to ensu-
re functionality and safety. Basically, the PV cable
should be kept as short as possible.
A length recommendation depending on the con-
nected nominal PV generator power can be found
in the following table.
Connected
PV power 4mm² 6mm² 10mm²
~325Wᵖ ≤ 18 m ≤ 27 m ≥ 27 m
~650Wᵖ ≤ 11 m ≤ 16 m ≥ 16 m
~975Wᵖ ≤ 9 m ≤ 13 m ≥ 13 m
Recommended cable length (there and back) for
dierent nominal powers and cross-sections

15
EN
CONNECTION OF AN EXTERNAL
AC REHEATING:
IMPORTANT! Only use certied connection plugs
(IEC-320 - C13 plugs) recommended by the manufac-
turer. Non-compliance will invalidate the warranty
and may damage the water heater.
The external reheating feature extended use of the
photovoltaic boilers. For example, long periods of
bad weather can be bridged by connected AC power.
OPERATION
WARNING! This appliance may be used by children
of age over 3 years old and persons with reduced
physical, sensory or mental capabilities, or lack of
experience and knowledge, where they are under
supervision or instructed about the safe use of the
appliance and understand the dangers. Children
must not be allowed to play with the unit! It is abso-
lutely forbidden that children undertake cleaning or
servicing of this appliance! Children aged from 3 to 8
years are only allowed to operate the tap connected
to the water heater.
Operation
Switch On:
Press the -button for three seconds.
Display:
The present water temperature is shown on the
display.
• POWER IN: Input power of the PV modules
• VOLTAGE: Input voltage of the PV modules
• USED PV ENERGY: Total PV energy utilised
Menu Navigation:
Press the - button briey. By pressing the
button again, you jump to the next page in the
menu.
Settings:
Press the - button repeatedly. This allows
individual adjustments on the unit to be made.
Please note: The adjustments are only active
when an external energy supply is connected to
the photovoltaic water heater.
• CHANGE SYSTEM MODE: Select the desired
mode by pressing the -button. Mode 1 (PV
HOME) is set as the factory default.
Quick guide: System modes
Mode 1 (photovoltaic)
For the direct connection of photovoltaic modules.
If desired plus a fothermo AC-reheating via mains
current.
Mode 2 to 3
For the connection of other energy sources such
as a battery. A battery cable is needed to plug in
the battery via MC4-connectors. The battery is not
included. More detailed information can be found
in the respective product description.
Switch o:
Press the -button for three seconds.
Set reheating temperature
If external mains voltage is connected. The garanted
teperature which the water heater holds all time can
be adjusted with the rotary knob.
In summertime when the sun is shining proberly and
the water heater is able to ensure reliable heating
with PV alone, the recommendation is to set the
rotary knob to the lowest temperature.
If the solar radiaton is not enough, set the rotary
know to the requested temperature (recommen-
dation 35°C to 40°C).
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.
The installation of a drainpipe facilitates future main-
tenance and servicing operations, as the water can
be drained from the water heater easily.
Noise emission
Noise may be generated inside the device during
the heating process, which is caused by lime
deposits on the heating element. An increased
formation of limescale can be observed at water
temperatures above 60°C. This may cause impair-

16
EN
ment and damage to the heating elements and
the water heater.
Formation of legionella
Due to the small volume of the hot water tanks, the
risk of the formation of legionella in the system is
almost excluded. Nevertheless, to take precautions,
the following measures are recommended:
• Supply of fresh water or regular water withdra-
wal.
• Heating the water frequently to at least 60 °C.
•
It is recommended to change the water aer
the appliance has not been used for more than
one month.
MAINTENANCE
IMPORTANT! Before maintenance and servicing,
disconnect the boiler from the mains and other
energy sources.
IMPORTANT! The cover may only be opened by
qualied personnel.
Repair instructions
All electronic repair work may only be carried out by
a qualied electronic technician. There is a risk of
injury. Modifying the cables and electronics voids the
warranty. The cables of the circuit (DC) of the solar
modules are marked red and black.
The color-coding of the cables of the AC post-heating
(230V) are as follows:
• Neutral conductor (N) - blue
• Protective conductor (PE) - green/ yellow
• 230V AC - phase/ load (L) - brown
Corrosion protection
Every water heater features an enamelled water
tank with additional corrosion protection. This cor-
rosion protection consists of a magnesium anode
(sacricial anode). The anode is a wearing part (i.e. it
wears out during normal operation of the unit). The
average life span is about 3 years, which depends
particularly on the operating mode of the appliance
as well as the characteristics of the water to be hea-
ted. The condition of the anode should be checked
at regular intervals and, if necessary, replaced by a
service specialist authorized by the manufacturer
or distributor.
Compliance with the deadline and the timely re-
newal of the anode are important conditions for
eicient corrosion protection of the water tank. The
exam-ination and the renewal of the anode are not
included in the warranty obligations of the manu-
facturer nor the dealer. To ensure the safe operation
of the water heater in regions with calcareous water,
it is recommended to clean the water tank regularly
from accumulated limestone. Such cleaning should
be carried out at least every two years, or more fre-
quently in regions with calcareous water. Deposits
on the enamel coating do not need to be scraped o,
just wiped o with a dry cotton cloth. The regular
cleaning and removal of the limescale is essential
to ensure the safe operation of the appliance. Whilst
cleaning the anode of the enamelled water tank
should also be checked. These services are not part
of the warranty scope and must be carried out by
qualied persons. The regulations for the inspection
of the anode protection and renewal of the anode, as
well as the removal of the collected limestone, must
be observed both during and aer the expiration of
the warranty period for the appliance.
Combined check and pressure relief valve
To guarantee the proper and safe operation of the
water heater, regularly check the combined check
and pressure relief valve for reduced permeability.
For this purpose, li the small lever and wait approx.
30-60 seconds until a strong stream of water ows
out of the valve opening on the side. This check
must be carried out aer lling the tank with water,
at 2-week intervals and aer failure and restoration
of the water supply. If no water or only a thin stre-
am ows out of the valve opening, this indicates a
malfunction. A possible contamination of the water
pipe might be present. The fault must be eliminated
before commissioning.
Cleaning
The outer casing and the plastic parts of the water
heater should only be cleaned with a lightly moiste-
ned cotton cloth, free of aggressive and/or scouring
agents. Do not clean the appliance with a steam clea-
ner. The water heater may only be put back into ope-
ration aer the moisture has completely vanished.

17
EN
MALFUNCTION
In case of a malfunction during the operation of
the water heater, disconnect all live wires from the
appliance and contact the manufacturer or your
distributor.
ENVIRONMENTAL PROTECTION
This device is labelled by the Waste Electrical and
Electronic Equipment (WEEE) directive. By ensuring
that the appliance is taken to a suitable disposal
centre at the end of its service life, you will help
to protect the environment and prevent negative
eects on the environment and human health. The
-symbol on the water heater indicates that the
appliance must not be disposed of with regular hou-
sehold waste at the end of its life. The product must
be taken to a disposal centre with special facilities
for electrical or electronic equipment. The end-user
must comply with local disposal regulations when
disposing of the product. For more information on
treatment, recovery, and recycling procedures, con-
tact your local city oice, your local waste disposal
centre, or the retailer from whom you purchased
the product.
WARRANTY
The warranty of the appliance is only valid under
the following conditions:
• The unit is installed in accordance with the ins-
tallation and operating instructions.
• The appliance is only used for its intended pur-
pose and in accordance with the installation and
operating instructions.
The manufacturer's warranty covers the repair of all
manufacturing defects that occur during the war-
ranty period. Only professionals authorized by the
seller may carry out repairs. The warranty does not
cover damage resulting from:
• improper transport
• improper storage
• improper use
• unsuitable water parameters
•
improper electrical voltage which deviates from
the rated voltage
• freezing of water
• exceptional risks, accidents, or other force ma-
jeure
• failure by disregarding the installation and use
instructions
•
in all cases when an unauthorized person at-
tempts to repair the appliance.
In the aforementioned cases, the damage will be
repaired against payment. The guarantee does not
apply to parts and components of the device that
are worn out during its normal operation, nor to
parts that are dismantled, to lights and signal lamps,
etc., to discoloration of external surfaces, to chan-
ges in the shape, dimensions, and arrangement of
parts and components that have been subjected to
an impact that does not correspond to the normal
conditions of use of the device. Any missed benets,
material and immaterial damages resulting from
temporary inability to use the unit during the period
of its repair and maintenance, are not covered by the
warranty of the unit.
COMPLIANCE WITH THE REQUIREMENTS SPECIFIED
IN THE MANUAL IS A PREREQUISITE FOR THE SAFE
OPERATION OF THE PURCHASED PRODUCT AND IS
INCLUDED IN THE TERMS OF THE WARRANTY. ANY
MODIFICATIONS OR ALTERATIONS TO THE DESIGN
OF THE PRODUCT MADE BY THE USER OR PERSONS
AUTHORISED BY THE USER ARE STRICTLY PROHIBI-
TED. ANY SUCH ACTS OR ATTEMPTS SHALL VOID THE
WARRANTY OBLIGATIONS OF THE MANUFACTURER
OR DISTRIBUTOR. THE MANUFACTURER RESERVES
THE RIGHT TO MAKE STRUCTURAL CHANGES WIT-
HOUT NOTICE, PROVIDED THAT THE SAFETY OF THE
PRODUCT IS NOT AFFECTED. WHEN NECESSARY, OR
IN CASE OF MISUNDERSTANDINGS IN CONNECTION
REGARDING THE TRANSLATION OR TERMS USED IN
THIS LANGUAGE VERSION OF THE INSTALLATION
AND OPERATING INSTRUCTIONS, PLEASE USE THE
GERMAN VERSION AS THE ORIGINAL AND PRIMARY
VERSION.

18
DE
ZEICHNUNGEN DES HERSTELLERS
BESCHREIBUNG
1 Wasseranschluss
2 Ablauf Wasser
3 Kombiniertes Ventil
4 Drehregler mit Thermostat
5 Elektronische Steuereinheit
PHOTOVOLTAISCHE BOILER
Modell PVB-30-AC PVB-80-AC
Volumen 30 80
Abbildung 1 | 2 |3
Abmessungen
(mm)
A 560 835
C 155 185
D 387 462
E 80 96
F 410 484

19
DE
SPEZIFIKATIONEN
HINWEIS: An den Warmwasserbereiter dürfen nur 36-zellige und 60/120-zellige Photovoltaikmodule
angeschlossen werden.
EINHEIT 30 LITER 80 LITER
PHOTOVOLTAISCHER BOILER
Produktmodell PVB-30-AC PVB-80-AC
Volumen l 29 77
Nenndruck MPa 0,7 0,7
IP Klasse 24 24
Gewicht (± 3%) kg 15 25
Maße (Länge, Breite, Höhe) cm 40x40x60 47x48x90
Kombiniertes Rückschlag- und
Überdruckventil
Korrosionsschutz
Emaillebeschichtung
Isolation
Energieeizienzklasse C C
Wasseranschluss G½ (M) G½ (M)
Integrierter Verpolungsschutz
Digitales Display
CE zertiziert
PHOTOVOLTAIKANSCHLUSS
Max. photovoltaik Heizleistung W 550 550
Max. photovoltaik Stromaufnahme A 15,5 15,5
Max. Wassertemperatur °C 65 65
Integrierter MPP Tracker
Empfohlene Photovoltaikleistung Wᵖ300 – 600 600– 1200
Max. anschließbare Photovoltaikleistung Wᵖ2000 2 000
Max. Leerlaufspannung Voc 42,4 42,4
Photovoltaischer Anschlussstecker MC4 MC4
NACHHEIZUNG ÜBER 230 V
STROMNETZ
Art der Nachheizung Direkt an der Steckdose
Heizleistung W 1500 1 500
Einstellbarer Wassertemperaturbereich °C 10 - 75 10 - 75
HEIZLEISTUNG IN ABHÄNGIGKEIT VON
DER AKTUELL VERFÜGBAREN
PHOTOVOLTAIKLEISTUNG
200W °C/ h 6 2
400W °C/ h 12 4,5
550 W °C/ h 16 6

20
DE
MODUS ABBILDUNG BESCHREIBUNG ENERGIEQUELLE
1.
PV-
Modus
Der Boiler wird primär mit PV-Energie
betrieben. Wenn keine Sonnenenergie
zur Verfügung steht, kann die integrierte
Netzstromnachheizung optional genutzt
werden, um den Boiler auf die am Dreh-
knopf eingestellte Mindesttemperatur
aufzuheizen.
PV-Module
+ 230V Nachheizung
2.
12 V -
Batterie
Über die MC4 Kontaktstecker, kann auch
eine Batterie angeschlossen werden.
Sobald der angeschlossene Akku eine
Spannung von 13,5 V erreicht, wird die
überschüssige Energie genutzt, um den
Boiler zu betreiben. Dies geschieht wäh-
rend der Akku geladen wird.
12 V Akku
Zugelassen:
LiFePO4, Bleiakku
3.
24 V -
Batterie
Über die MC4 Kontaktstecker, kann auch
eine Batterie angeschlossen werden.
Sobald der angeschlossene Akku eine
Spannung von 27V erreicht, wird die über-
schüssige Energie genutzt, um den Boiler
zu betreiben. Dies geschieht während der
Akku geladen wird.
24 V Akku
Zugelassen:
LiFePO4, Bleiakku
SYSTEM MODI