DESCRIPTION AND PRINCIPLE OF WORK
IV.
EN
The appliance consists of a body, flange at the bottom side /for water
heaters intended for vertical mounting/ or at the sides /for water heaters
intended for horizontal mounting/, protective plastic panel safety-return
valve.
1.
The body consists of a steel reservoir (water tank) and housing (outer
shell) with thermal insulation placed in-between made of ecologically clean
high density polyurethane foam, and two pipes with thread G ½ '' for cold
water supply (marked by a blue ring) and hot water outlet pipe (marked by
a red ring).
The inner tank may be of two types depending on the model:
•
Made of steel protected form corrosion by a special glass-ceramics
coating
•
Made of stainless steel
The flange is outfitted with: electric heater and thermostat. The water
2.
heaters with glass-ceramics coating are outfitted with a magnesium
protector.
The electric heater is used for heating the water in the tank and is managed
by the thermostat, which automatically maintains the set temperature.
The thermostat has a built in overheating safety device, which switches of
power to the heater when the water temperature reaches excessive values.
The safety-return valve prevents the appliance's complete emptying
3.
in the event the cold water supply is interrupted. The valve protects the
appliance from pressure increases higher than the allowed value during
heating (! pressure increases upon an increase of temperature), via release
of excess pressure during the drainage opening.
The safety-return valve cannot protect the appliance in the event of
water mains pressure in excess of the acceptable pressure stated
for the appliance.
MOUNTING AND SWITCHING ON
V.
Attention! Improper installation and connection of the appliance may
make it hazardous for the health and life of consumers. It may
cause grievous and permanent consequences, including but not limited to
physical injuries and/or death. Improper installation and connection of the
appliance may also lead to damage to the consumers' property /damage
and/ or destruction/, or to that of third persons, as a result of, but not limited
to flooding, explosion and/or fire. Installation, connection to the main water
and power supply, and putting into operation must be carried out by certified
electricians and technical personnel certified in installation of this category
of appliances, who have obtained their license in the state where the
installation and commissioning of the appliance are carried out, and in
compliance with its local legislation.
Notice: The installation of the unit is at the buyer's expense.
Mounting
1.
We recommend the mounting of the device at close proximity to
locations where hot water is used, in order to reduce heat losses
during transportation. In the event the device is mounted in a
bathroom, the selected location must exclude the possibility of
water spray contact from the showerhead or portable showerhead
attachment.
The appliance is affixed to a wall via the mounting brackets
attached to the unit's body (if the brackets are not attached to
the unit's body, they must be affixed in place via the provided
bolts). Two hooks are used for suspending the appliance (min.
Ø10 mm) set firmly in the wall (not included in the mounting set).
The mounting bracket's construction designed for water heaters
intended for vertical mounting is universal and allows a distance
between the hooks of 220 to 310 mm (fig. 1a).
In order to prevent injury to user and third persons in the event of
faults in the system for providing hot water, the appliance must be
mounted in premises outfitted with floor hydro insulation and plumbing
drainage. Don't place objects, which are not waterproof under the appliance
under any circumstances. In the event of mounting the appliance in
premises not outfitted with floor hydro insulation, a protective tub with a
plumbing drainage must be placed under the appliance.
Notice: the set does not include a protective tub and the user must
select the same.
Water heater connection to the pipe network.
2.
Fig. 3:
Where: 1 - Inlet pipe; 2 - Safety valve; 3 - reducing valve (for water main
pressure > 0,6 MPa); 4 - Stop valve; 5 - Funnel connected to the sewer
network; 6 – Hose; 7 - Drain water tap.
Upon connecting the water heater to the water mains you must consider the
indicative color markings /rings/ affixed to the pipes: blue for cold /incoming/
water, red for hot /outgoing/ water.
The mounting of the safety return-valve supplied with the water
heater is obligatory. The safety return-valve must be mounted on
the cold water supply pipe, in observance of the direction arrow
stamped on its body, indicating the incoming water's direction.
6
Instructions for use and maintenance
Additional stopcocks must not be mounted between the safety
return-valve and the water heater.
Exception: If the local regulations (norms) require the usage
of another protection valve or mechanism (in accordance with
EN 1487 or EN 1489), then it must be bought additionally. For
mechanisms operating in accordance with EN 1487 the announced
operational pressure must be no more than 0.7 MPa. For other
protection valves, the pressure at which they are calibrated must
be 0.1 MPa lower than the one marked on the appliance's sign. In
these cases the safety valve which the appliance is supplied with
should not be used.
The presence of other /old/ safety return-valves may lead to a
breakdown of your appliance and they must be removed.
Other type of stopping armature is not allowed between the protection
return valve (the protective device) and the appliance.
The attaching of the safety return-valve to threads longer than 10 mm is not
allowed, otherwise this may damage the valve and poses danger for your
appliance.
With appliances for vertical assembly, the safety valve has to be
connected to the ingoing pipe with the safety plastic panel of the
appliance being taken off.
The safety valve and the pipe between the valve and the water heater
must be protected from freezing. During hose draining - its free end must
be always open to the atmosphere (not to be immersed). Make sure that the hose
is also protected from freezing.
Opening the cold-water stopcock of the water supply piping network and
opening the hot-water stopcock of the water-mixing faucet carries out the
filling of the water heater with water. After the filling is complete, a constant
stream of water must begin to flow from the water-mixing faucet. Now you
can close the hot water stopcock.
In the event you must empty the water heater, first you must cut off its
power supply. The inflow of water from the water mains must first be
terminated and the hot water tap of the mixing-faucet must be opened.
The water tap 7 (fig 3) must be opened to drain the water from water tank.
If there is no such tap build in the pipe line, than the water can be drain
directly from inlet pipe of water tank after when you disconnect it from water
main.
In the event of removing the flange, the discharge of several liters of water,
which remain in the water tank, is normal.
Measures must be undertaken to prevent damage from discharging
water during draining
In case that the pressure in the water mains is over the value pointed
out in the above paragraph I, then it is necessary to assemble a
pressure reduce valve, otherwise the water heater would not function
properly. The Manufacturer does not assume any liability for problems
arising out of the appliance's improper use.
Water heater connection to the electrical network
3.
Make sure the appliance is full of water prior to switching on the
electrical mains power.
Models with power cord with a plug are connected by inserting the
3.1.
plug into a contact. They are switched off the power supply by drawing
the plug out of the contact.
The wall-plug must be properly connected to a separate electrical
circle that is provided with a protector. It must be earthed.
3.2.
The appliance has to be connected to a separate electricity
circuit of the stationary electrical wiring. The connecting has to be
constant- with no plug contacts. The circuit has to be supplied with
a safety fuse (16A) and with inbuilt device to ensure disconnection
of all pole pieces in the conditions of over-voltage from category III.
The connecting of the conductors of the supply cord of the
appliance has to be carried out as follows:
•
conductor with brown insulation – to the phase conductor of the
electrical wiring (L)
•
conductor with blue insulation- to the neutral conductor of the
wiring (N)
•
conductor with yellow-green insulation – to the safety conductor
of the wiring (
)
Models without power cord
3.3.
The appliance has to be connected to a separate electricity circuit of
the stationary electrical wiring. The circuit has to be supplied with a
safety fuse 16A (20A for power > 3700W). Copper single core (rigid –
non stranded) conductor shall be used for the connection – cable 3 x
2.5 mm² (cable 3 x 2.5 mm² for power > 3700W).
The electrical circuit supplying the appliance must have an in-built
device ensuring the splitting of all terminal poles under conditions of
super-voltage of category III.