The cold water access to the appliance is cut
–
close the stop
cock (pos. 4 from Fig. 4).
Open the hot water cock on the tap or disconnect the tank hot
water pipe (outlet pipe) connection.
Lift the lever of the combined valve on pos. 5 from Fig. 4 and
wait until the water stops flowing out of the valve opening.
These steps do not still secure the complete draining of the water
out of the tank. It is completed only by a qualified person because it
requires complete disconnection of the appliance electric circuit
and dismantling the water tank flange.
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 fill 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 device 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
flowing out water.
CONNECTING THE WATER HEATER WITH HEAT
EXCHANGER TO THE ALTERNATIVE HEAT
SOURCE CIRCUIT
The water heater with heat exchanger must be connected to the
alternative heat source in accordance with the special additional
instructions provided by the company responsible for the
installation and connection of the heater design. It is mandatory to
install all supplied and/or recommended by this company safety,
control and coolant movement management devices.
WARNING!
It is prohibited to fit stop valves on heat exchanger
both ends (inlet and outlet) simultaneously. In cases where the
water heater heat exchanger shall not be used and is not
connected to the heat source circuit, it must be filled with
propylene glycol solution suitable for heating systems.
Connecting the heat exchanger of the water heater to an
alternative heat source circuit must be completed only by qualified
technicians in the field from a company specializing in such
services and in accordance with the design.
WATER HEATER CONNECTION TO THE POWER
SUPPLY NETWORK
WARNING!
Do not proceed to connect the water heater to the
power supply network unless you have made sure that its water
tank is full with water! Check!
The water heater is an appliance with protection degree against
current damages Class I, which requires its compulsory
connection to the earthling circuit of the power supply installation.
The water heaters models electric circuit schema are shown on
Fig. 5 and 6.
The electric power supply of the water heaters is 230 V~ and should
be performed by a separate current circuit of insulated three-core
supply cable with a cross-section of each of the wires of 2,5 mm
2
(phase, neutral and grounding). Therefore if the in-wall cable is two-
wire, a qualified electrician must add a third, protective conductor
with no interruption on its track from the switchboard to the water
heater. If the earthling conductor/wire has intermediate connections,
latter must be secured against loosening. Otherwise the appliance
shall not be correctly earthed and it shall reduce its safety.
WARNING!
IT IS COMPULSORY that in the electric circuit
feeding the heater is installed such a device which in the
conditions of over voltage category III provides full
disconnection of all poles. The conductors between the circuit
and the device incoming electrical terminals must not be
interrupted by any circuit breaker or fuse. Should the water
heater be installed in premise with shower cubicle and/or bath
the disconnecting device must be located outside.
All the extremities of wires in the appliance circuit must be properly
connected to the main power switchboard and in the heater
connection point to the power supply grid. In the phase circuit it is
obligatory to install an electric fuse 10
А
for water heater electric
capacity up to 2 kW and 16Afor electric capacity of 3 (3,2) kW. The
electric installation to which the heater will be connected must be
built in accordance with the requirements of the applicable statutes
and local regulations in force. Where the regulations in force do not
require that in the water heater circuit be installed an automatic
breaker against leakage of current (residual current protection
device), we recommend to install such a device.
The connection of the cables from the mains switchboard to the
unit terminals shall be carried out after carefully removing the
plastic cover so that the electrical wiring in the unit does not
disengage. In accordance with electric circuit schema glued on the
cover connect the phase conductor of the power wire to the
terminal marked L (or A1 depending on the
), the
modification
neutral wire to the terminal marked N (or B1) and the earthling
–
to
the security terminal (screw or stud) marked for protective
earthing. The power cord must be secured against displacement
by using the cable clamp located next to the cable hole in the
plastic cover. After connecting and attaching the power cable, put
the plastic cover into place and secure it with screws, taking care
for free movement of cables, thermostat capillary tube and the
control switch.
If you have purchased water heater with pre-installed power cord
with a plug, the electric connection shall be carried out as the plug
in put directly in a functioning and grounded socket of the premise
electric installation. The socket should be on a separate, dedicated
only for the water heater circuit and located so as to be easily
accessible after the unit installation. The section of the electric
installation wires in which the socket is placed must be suitable for
the water heater electric power consumption. On the phase line
must be installed a fuse (10 A for a capacity of 2 kW and 16 A for 3
(3,2) kW). The installation must be carried out in compliance with
the regulations in force. Taking out the power cord plug from its
socket shuts down the water heater. Faulty and / or inappropriate
electric installation and / or socket are high-risk conditions for
accidents with damages to the product and possible damages to
the environment, objects and living species.
Once the appliance is connected to the power supply grid check its
functionality.
WARNING!
Failure to comply with the requirements
concerning connection to the mains shall impede the appliance
safety, in which it is prohibited to use. Adverse effects occurring
as a result of non-compliance with requirements concerning the
appliance electric connection are not covered by the
manufacturer and seller warranty liabilities and are at the
expense of the party violating the requirements of this
instruction manual.
Only qualified persons are entitled to connect the water heater to
the mains and to check its functionality.
17
EN
