Thermex N 15 U [17/44] Description and functioning

of cold water to the EWH, upstream the safety valve (in the direction of water flow) it is necessary to

install a suitable pressure relief valve (not supplied with the EWH) to reduce the pressure of cold

water to normal. Installation of a pressure relief valve between the EWH and the safety valve is

prohibited;

to connect the EWH to the water supply without a safety valve;

џ

to drain the water from the EWH when the power is on;

џ

to use spare parts not recommended by the manufacturer;

to switch on and operate the EWH with closed inlet and outlet valves (nipples).

џ

to change the design and mounting dimensions of the EWH brackets;

џ

4. Freezing of water in the device is unacceptable, as this leads to its malfunction, which is not a

warranty case.

5. The EWH is not intended for use by physically or mentally challenged persons, or by persons who

are unable to use the EWH, except when it is monitored or instructed by persons responsible for the

safety of the EWH. Children can use the EWH only under the supervision of persons who know how to

safely operate it. It is necessary to remember that there is a risk of scalding and electric shock.

operation (no smudges, smell of burning, sparking wires, etc.). In the event of long breaks in the

operation of the water heater, failures in the operation of water supply or electricity supply systems, it

is necessary to disconnect the EWH from the mains and close the cold water supply valve.

Description and functioning

The inner tank is made of high quality stainless steel, which provides high corrosion resistance and,

consequently, long service life. The space between the outer case and the inner tank is filled with

polyurethane foam – a modern, ecologically clean thermal insulation, which has the best heat-saving

characteristics. The EWH has two threaded nipples: for cold water inlet (Fig. 1, item 3) with the blue

ring and hot water outlet (Fig. 1, item 2) with the red ring.

The control panel is located on the protective cover (Fig. 1, item 16).

heater from the mains when the water temperature exceeds +93 °C (±5 °C).

An indicator lamp (Fig.1, item 18), which is an indicator of the heating of water in the EWH, is located

on the front side of the EWH. If the indicator lamp is on, the water is heating up, and the lamp is off

when the temperature set by the customer is reached.

16

Installation and connection

All installation, plumbing, and electrical work must be carried out by qualified

personnel only.

Location and installation

Installation of the EWH should be performed in accordance with the marking indicated on the

anchors (supplied with the EWH) fixed in the wall.

Installation of hooks in the wall should prevent spontaneous movement of the EWH brackets along

them. When choosing the installation site, the total weight of the EWH filled with water must be taken

into account. Wall and floor with a low supporting capacity should be strengthened accordingly. To

maintain the EWH, the distance from the protective cover to the nearest surface in the direction of the

axis of the removable flange must be at least 0.5 meters.

In order to avoid harming the property of the customer and (or) third parties in the event of a faulty hot

water supply system, it is necessary to install the EWH in rooms that have waterproof floors and drain

to the sewage system, and not to place items exposed to water under the EWH. When placing the

EWH in unprotected rooms, it is necessary to install a safe tray underneath (not supplied with the

Install the safety valve (5) at the inlet of the cold water (3) – the nipple with the blue ring, for 3,5 – 4

turns, ensuring tightness of the connection with any sealing material (flax, FUM tape, etc.).

The safety valve is a non-return valve which prevents water from entering the water supply system

from the water heater in case of pressure drop in the former, and in cases of increasing pressure in the

tank with strong water heating, and also the safety valve relieves excess pressure in the tank when

the water is heated up strongly. During operation of the water heater, water can leak from the safety

valve drain pipe (7) to relieve excess pressure, which occurs for the safety of the water heater. This

drain pipe should remain open to the atmosphere and be installed permanently down and in a non-

freezing environment.

WARNING! It is forbidden to operate the EWH without a safety valve or use a valve of