Thermex NOBEL N 15 O [19/44] Electrical installation

It is necessary to drain off a small amount of water regularly (at least once a month) through

the drain pipe of the safety valve into the sewage system to remove calcareous sediments and

to test the valve's performance.

The handle (6) is designed to open the valve (5). Ensure that during operation of the water heater this

handle is in such a position as to stop draining of water from the tank.

Connection to the water supply system is made in accordance with (Fig.1) with the help of copper,

plastic pipes or special flexible flow pipes designed for temperatures of up to 100 °C at the maximum

operating pressure. It is prohibited to use flexible pipes previously used. Plumbing and valves must

comply with the parameters of the water supply network and have the necessary quality certificates.

Drops of condensate appearing on the metal parts (nipples, case) associated with the temperature

drop are not a drawback or leakage of the EWH itself.

When connecting the EWH in places not equipped with running water, it is allowed to supply water to

the EWH from the storage tank using a pumping station, or from a container placed at a height of at

least 5 meters from the top of the EWH.

Electrical installation

Before switching on the heater, make sure that its parameters correspond to the technical

specifications of the water heater.

WARNING! Before switching on the power supply, make sure that the EWH is filled with

water!

EWH using the temperature control knob located on the protective cover of the EWH (Fig. 1, item 17).

When the knob is turned counterclockwise to the stop, the EWH disconnects from the mains, when

the knob is turned clockwise, the temperature gradually increases up to +74 °C (±5 °C).

If the water temperature exceeds +95 °C, the temperature switch trips, immediately disconnecting the

tubular heater. To return the device to operating condition, it is necessary to press the button of the

thermal switch (Fig. 2), which is located under the cover of the EWH, until it clicks.

Maintenance

During maintenance, the tubular heater should be inspected for scale. Simultaneously, a sediment,

which can built up at the bottom of the EWH, should be removed. If there is a scale on the tubular

heater, it can be removed with the help of special cleaning agents, or mechanically. It is necessary to

carry out the first maintenance service a year after connection of the EWH and to determine the time

frame of subsequent maintenance according to the intensity of the scale and sediment buildup. This

will maximize the service life of the EWH.

WARNING: scale buildup can cause damage to the tubular heater.

Regular maintenance is not included in the manufacturer's and seller's warranty.

To carry out maintenance, it is necessary to do the following:

џ

unscrew the safety valve or open the drain valve;

џ

put the rubber hose on the cold water supply nipple or the drain valve by directing the second end of

џ

the hose into the sewer;

open the hot water tap on the mixer and drain the water from the EWH through the hose into the

џ

sewer;

remove the protective cover, disconnect the wires, unscrew and remove the support flange from the

when performing technical maintenance of the EWH by a specialized organization, a

џ

corresponding note must be made on the warranty card.

Possible malfunctions and methods of their elimination

In case of a malfunction in the work of the product, disconnect it from the electrical network, shut off

the water.

Remove the removable flange

from the EWH and carefully

clean/descale the tube

The thermostat tube is scaled up

temperature switch

Contact the utility

Remove the flange and

descale the heater

Tubular heater is scaled up

Heating time increased