Connection To The Water Supply; Electrical Connection - fothermo CPVB-10 Bedienungsanleitung

must be selected according to the nature of the floor.
Only with the right screws is it possible to safely
install the boiler.

Connection to the water supply

When connecting the device to the water pipe, plea-
se note the arrows and the information rings around
the cold and hot water pipes (supply and return
pipe). The cold water pipe has a blue ring and is
marked with an arrow pointing to the pipe. An arrow
away from the pipe and a red ring indicate the hot
water pipe. The hot water tank is equipped with a
combined non-return and pressure relief valve. This
is included in the product packaging and MUST be
installed on the cold water line. During this instal-
lation, the arrow on the body of the valve indicating
the direction of water flow through the valve must
be followed.
The pipe connections have G½ external threads.
Schematic representations regarding the connection
of the hot water tank are shown in Figures 1 and 2.
The hot water tank works with the pressure of the
water pipe. The water pressure in the water supply
system should be higher than 0.1 MPa (1 bar) and
lower than 0.5 MPa (5 bar). If the water pipe pressure
is higher than 0.5 MPa, a pressure reducing valve
must be installed.
If additional accessories that are not included in
the scope of delivery must be used in accordance
with local regulations, these must be installed in
accordance with the specifications. In case the water
supply pipes are made of copper or other metal,
which is different from the metal of the water tank,
as well as when brass fasteners are used, non-metal
fittings should be mounted on the inlet and return
sides of the water heater (dielectric fittings ).
WARNING!
It is forbidden to install any shut-off or
non-return fittings between the combined valve and
the hot water tank, as well as blocking the side ope-
ning of the combined valve and/or locking its lever!
A drainage system to evacuate the contents of the
boiler or possible dripping water from the side
opening of the combined valve must be provided.
The drain line must be designed with a constant
gradient. It must always remain open. After the hot
water tank has been connected to the water pipe,
the water tank must be filled with water. The order
of the steps to be performed is:
• Fully open the hot water tap at the furthest
point of use.
• Wait until the air has escaped from the system
and a strong jet of water flows out of the tap-
ping point. Run water for about 30 seconds.
• Close the hot water tap at the extraction point.
• Lift the small pressure relief valve lever (Table
1, item 5) for 10 seconds. A strong jet of water
must flow out of the lateral opening of the
valve.
• Release valve lifting.
WARNING!
If no water flows out of the valve ope-
ning or only a thin stream flows, then this indicates
a malfunction. There may be contamination in the
water line. The error must be rectified before com-
missioning.
WARNING!
The combined non-return and pres-
sure relief valve is one of the protective devices that
ensure the safety of the hot water tank. It is strictly
FORBIDDEN to use the water heater with a damaged
or removed/not installed combined non-return and
pressure relief valve (safety valve)!
IMPORTANT!
In Denmark, Sweden, Norway and
Finland, the hot water tank may only be connected
to the public water network using a suitable pressure
reducing valve. Local regulations must be observed.

Electrical connection

WARNING!
Any electrical connection may only be
performed when the water heater is filled with water.
IMPORTANT!
The water heater is powered by di-
rect current. The water heater is protected against
electric shock "class III" 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
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EN