EN
10
from the combined valve side opening. The draining pipe must
have a constant downward slope and located in frost secure
environment and its ends to be constantly kept open to the
atmosphere.
Once the water heater is connected to the water supply main, its
water tank should be filled up with water. It is carried out in the
following order:
џ
Open completely the turn-cock for hot water of the most
distant mixing tap.
џ
Open the stop valve on pos. 4 from Fig. 8.
џ
Wait for the air from the system to come out and over half a
minute from the fitting outlet to flow out a thick and strong
water stream.
џ
Close the turn-cock for hot water of the mixing tap.
џ
lift the lever of the combined valve on pos. 5 from Fig. 8 and
wait for about 30-60 seconds until a thick and powerful
stream of water runs out from the valve side opening.
џ
Loose the lever of the combined valve.
WARNING! If no water is coming out of the opening of the
combined valve or the flow is weak (during normal water
pressure), this should be considered as a malfunction
indicating that impurities from the plumbing or caused by
sewage connections have blocked the safety valve of the
combined valve.
IT IS FORBIDDEN to proceed with appliance electric connection
before eliminating the reason for malfunction!
WARNING! Failure to comply with the requirements for
connection to the water supply system may cause partial filling
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
intangible property. Such consequences are not within the
scope of manufacturer or seller warranty liabilities and shall be
at the expense of the party, which has not observed the present
manual instructions.
WARNING! The combined reciprocating safety valve is one of
the unit safety components ensuring security for water heater
users. It is specifically FORBIDDEN to use the water heater
with a defective or removed/unmounted combined safety valve!
The water heater connection to the water supply system must be
performed only by qualified persons.
Where necessary the safety valve may serve for draining the water
out of the water tank. It is carried out the following order:
џ
Disconnect the heater from the electrical power supply
network with the optional device and for greater security
disconnect the fuse in the heater phase circuit.
џ
Cut the cold water access to the appliance - close the stop
cock, pos. 4 from Fig. 8.
џ
Open the hot water cock on the tap or disconnect the tank hot
water pipe (outlet pipe) connection.
џ
Lift the lever of the combined valve 5 in Fig. 8 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 HEAT EXCHANGER OF
WATER HEATER 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. 10 and 11 (with two heaters, modifications with „D“)
The electric power supply of the water heater is 230 V~ and is
performed by a separate current circuit of insulated three-core
2
supply cable with a cross-section of each of the wires of 2,5 mm
(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
