TESY GCH 503520 B12 TSR, Instructions Manual

10

Instructions for use and maintenance

EN

2.2. 

Temperature setup (for models with adjustable 

thermostat)
This setup allows the gradual setting of the desired 

temperature, achieved by using a handle on the control panel. 

Turn the knob to the upward indication, in order to increase 

the temperature of the hot water.

Place the thermostat knob in position for maximum 

temperature (unless it is on this position constantly), for 

period of one day each month - see 

Table-I (h)

 Thermostat temperature 

setting. This ensures higher hygiene of the used hot water.

I

MPORTANT

: Models that do not have thermostat 

control knobs have automatic water temperature 

preset by the manufacturer .

Position

e

 (Energy-save mode) – At this mode, water 

temperature reaches up to approximately 60°С. Heat losses are 

reduced in this way. 

3. 

Аnti-freezing“ function

Place the thermostat knob in position „Аnti-freezing“ 

according to fig.2. With this setup the device maintains 

temperature that does not allow the water freeze in it. 

The electrical supply of the appliance should be 

turned on and so must be the appliance. The safety 

valve and the pipe between the valve and the appliance must 

be protected from freezing. In case that for some reason the 

electrical supply is cut off, there is a risk of freezing of the 

water in the water tank. For this reason we recommend 

draining the water out of the appliance before long absences 

(longer than a week).

4. 

Protection according to the temperature (valid for all models).

The appliance is equipped with a special facility (thermal 

circuit-breaker) for protection against over-heating of the 

water, which is switching off the heater from the electricity 

network, when the temperature reaches too high values. 

When this device operates, it does not self-reset and the 

appliance will not work. Please call an authorized service 

for solving the problem.

VII. 

MODELS EQUIPPED WITH A HEAT EXCHANGER 

(SERPENTINE TUBE).

These are appliances with inbuilt heat exchanger and are 

intended to be connected to the heating system with 

maximum temperature of the heat carrier of 80°C.

The control over the flow through the heat exchanger is a 

matter of solution for the particular installation, whereby the 

choice should be made at its design (e.g. external thermostat 

that measures the temperature in the water tank and operates 

a circulation pump or a magnet valve).

Water heaters with a heat exchanger provide the opportunity 

for the water to be heated in two ways:

1. 

by means of a heat exchanger (coil) – a primary way of heating 

the water,

2. 

by means of an auxiliary electrical heating element with 

automatic operation, built in the appliance – it is used only 

when additional heating of the water is needed or in case of 

repairs to the system of the heat exchanger (coil). The proper 

way of connecting the appliance to the electric network 

and how to work with it has been specified in the previous 

paragraphs.

Mounting: 

In addition to the mounting manner outlined above, especially 

for the latter models, it shall be required to connect the heat 

exchanger to the heating installation. The connections are to 

be carried out in observance of the direction indicated by the 

arrows on Fig. 1c.

Technical parameters (

table 4

:

Surface of serpentine [m²] - S;

Volume of serpentine [l] - V;

Operational pressure of serpentine  [MPa] - P;

Maximum temperature of heat carrier [°C] - Tmax.
We recommend you mount stopcocks at the heat exchanger’s 

entry and exit points. By stopping the flow of the thermophore 

via the lower (stopcock) you shall avoid the unnecessary 

circulation of the thermophore during periods of use only of the 

electric heating element.

Upon disassembly of you water heater equipped with a heat 

exchanger you must close both stopcocks.

There is a connexion with internal thread of ½” welded to 

the water tank for the purposes of installing thermal probe – 

marked with „TS”. The appliance is fitted with brass pocket for 

a thermal probe which should be screwed into the aforesaid 

connexion.

The usage of dielectric bushings for connecting the heat 

exchanger to an installation of copper pipes is obligatory.

For ensuring minimal corrosion, pipes with a limited 

diffusion of gasses must be used in the installation.

VIII. 

PERIODIC MAINTENANCE

Under normal use of the heater, under the influence of high 

temperature, lime scale /the so-called lime scale layer/ is 

deposited upon the heating element’s surface. This worsens 

the heat exchange between the heating element and water. 

The heating element’s surface temperature increases along /

of boiling water/. The thermoregulator begins to switch on 

and off more frequently. A ‘’deceptive” activation of the thermal 

protection is possible. Due to these facts, the manufacturer 

recommends preventive maintenance of your water heater 

every two years by an authorized service center or service 

base. This protective maintenance must include cleaning and 

inspection of the anode protector (for water heaters with 

glass-ceramic coating), which shall be replace with a new one 

if need arises. 

In order to clean the appliances use a damp cloth. Do not clean 

with abrasive or solvent content detergents. Do not pour 

water over the appliance.

The manufacturer does not bare the responsibility for all 

consequences caused by not obeying the instructions, given 

hereby.

Instructions for protecting the environment

Old electric appliances contain precious materials 
and thus should not be thrown together with the 
household litter. We kindly ask you make your active 
contribution for protecting the resources and the 
environment by handing over the appliance in the 

authorized buy-back stations (if such exist).