TESY GCR 802724D E31 EC - Инструкция по эксплуатации - Страница 7

7

EN

English

II. 

TECHNICAL PARAMETERS

1. 

Nominal volume, litres - see the appliance’s rating plate

2. 

Nominal voltage - see the appliance’s rating plate

3. 

Nominal power consumption - see the appliance’s rating plate

4. 

Nominal pressure - see the appliance’s rating plate

This is not the water mains pressure. This is the pressure that is declared for the 

appliance and refers to the requirements of the safety standards.

5. 

Water heater type – closed type accumulating water heater, with thermal insulation

6. 

Daily energy consumption – see Annex I

7. 

Rated load profile – see Annex I

8. 

Quantity of mixed water at 40°C V40 in litres – see Annex I

9. 

Maximum temperature of the thermostat – see Annex I

10. 

Default temperature settings – see Annex I

11. 

Energy efficiency during water heating – see Annex I

III. 

DESCRIPTION AND PRINCIPLE OF OPERATION

The appliance consists of a body, flange at the bottom side (for water heaters 

intended for vertical mounting) or at the sides (for water heaters intended for 

horizontal mounting), protective plastic panel and a safety-return valve.

1. 

The housing consists of two steel tanks (water tanks) and a casing (outer shell) 

with heat insulation between them from an environmentally clean high-density 

polyurethane foam and a housing (outer shell) with thermal insulation placed in-

between made of ecologically clean high density polyurethane, and two pipes with 

thread G½‘’ for cold water supply (marked by a blue ring) and hot water outlet pipe 

(marked by a red ring).

The inner tanks, depending on the model, may be two types:

 •

Made of steel protected from corrosion by a special glass-ceramic or enamel 

coating ;

 •

Made of stainless steel.

2. 

An electric heater and a magnesium protector are installed on each flange.

The electric heater is used for heating the water in the tank and is operated by the 

thermostat, which automatically maintains the set temperature. The appliance has 

two built-in devices (for each of the water tanks) for overheat protection (thermo-

switches) which switch off the respective heater from the mains when the water 

temperature raises too much.

3. 

The safety-return valve prevents the appliance’s complete emptying if the cold 

water supply stops from the water mains. The valve protects the appliance from 

pressure increases higher than the allowed value during heating mode (an increase 

of temperature causes water expansion and therefore pressure increase) by releasing 

the excess pressure through the drainage opening.

The safety-return valve cannot protect the appliance in the event of water mains 

pressure that is higher than the pressure stated for the appliance.

IV. 

MOUNTING AND SWITCHING ON

Attention! Improper installation and connection of the appliance will make it 

hazardous with grave health consequences and may cause even death of 

users. It may also damage their property, that of third parties, as a result of flooding, 

explosion, fire

. Installation, connection to the water mains and connection to power 

lines must be carried out by qualified technicians. A qualified technician means a person 

who has appropriate competencies pursuant to the regulations of the relevant state.

1. 

Mounting

We recommend the device to be mounted in close proximity to locations where hot water 

is used in order to reduce heat losses during transportation in the pipelines. If the device 

is mounted in a bathroom, it should be in such a place so as not to be poured with water 

from the showerhead or a portable showerhead attachment.
When mounted on a wall - the device is suspended by means of the M8 bolts attached to 

the housing, which are installed on brackets pre-mounted and levelled with the wall. The 

load-bearing brackets and dowels for wall mounting are included in the kit.
Vertical installation scheme - Fig. 4.1

Horizontal installation scheme – Fig. 4 2.

In order to prevent injury to the user and/or third persons in the event of faults in 

the system for hot water supply, the appliance must be installed in premises 

with floor hydro insulation and drainage to the sewerage. Under no circumstances 

should you place objects which are not waterproof under the appliance. If the 

appliance is installed in premises without floor hydro insulation, a protective tub with 

drainage to the sewerage must be in place under the appliance.

Note:

 The set does not include a protective tub and it should be chosen/

purchased by the user.

2. 

Connecting the water heater to the water supply system

Fig. 5 

Where: 1 - Inlet pipe; 2 - safety valve; 3 - reducing valve (for pressure in the water mains 

higher than 0.6 MPa); 4 - stop valve; 5 - funnel connected to the sewerage; 6 – hose; 7 – 

drain water tap.

Upon connecting the water heater to the water mains you must consider the indicative 

colour markings (rings) affixed to the pipes: blue for cold (incoming) water, red for hot 

(outgoing) water.

The mounting of the safety return-valve supplied with the water heater is 

obligatory. The safety return-valve must be mounted on the cold water supply 

pipe, in accordance with the direction of the arrow stamped on its body, indicating the 

direction of the incoming water.

Exception:

 If the local regulations (norms) require the use of another protection 

valve or device (which conforms to EN 1487 or EN 1489), then it must be 

purchased additionally. For device operating in accordance with EN 1487 the declared 

maximum operational pressure must be no more than 0.7 MPa. For other protection 

valves, the pressure at which they are calibrated must be 0.1 MPa lower than the one 

marked on the appliance’s plate. In these cases the safety valve which the appliance is 

supplied with should not be used.

Other type of stopping armature is not allowed between the protection return 

valve (the protective device) and the appliance.

The presence of other (old) safety return-valves may lead to a breakdown of 

your appliance and they must be removed.

The attaching of the safety return-valve to threads longer than 10 mm is not 

allowed; otherwise this may damage the valve and therefore pose danger to 

your appliance.

The safety-return valve and the pipe between the valve and the water heater 

must be protected from freezing. In case of hose draining its free end must be 

always open to the atmosphere (not to be immersed). Make sure that the hose is also 

protected from freezing.

To fill the water heater with water first open the hot-water tap of the water-mixing 

faucet.  Then open the cold-water tap of the water-mixing faucet. The appliance is 

full when a constant stream of water flows from the water-mixing faucet. Then close 

the hot water tap.

When you have to empty the water heater, first you must cut off its power supply. 

Then stop feeding water to the appliance. Open the hot-water tap of the water-

mixing faucet. Open tap 7 (fig. 5) in order to drain the water from water tank. If there 

is no such tap built in the pipeline, than the water can be drained directly from the inlet 

pipe of the water tank, having it disconnected from the water mains prior to this
When removing the flange, it is normal for several litres of water, which have 

remained in the water tank, to be discharged.

Measures must be taken to prevent damages by the discharged water.

If the pressure in the water mains piping exceeds the value specified in paragraph I 

above, a pressure-reducing valve must be installed, otherwise the water heater will 

not be correctly operated. The manufacturer will not bear any liability for problems 

arising from improper operation of the appliance.

3. 

Connecting the water heater to the electrical mains

Make sure the appliance is full of water before switching on the electrical power 

supply.

3.1. 

For models with a power cord with a plug, connection to the electrical 

mains is done by inserting the plug into an electrical socket.

Disconnection from the electrical mains is done by unplugging the power cord from 

the socket.

The electrical socket must be properly connected to a separate current loop that 

is provided with a safety fuse. It must be earthed.

3.2. 

Water heaters with a power supply cord without a plug

The appliance has to be connected to a separate current loop of the stationary 

electrical installation, and also it has to be provided with a safety fuse with nominal 

current of 16A (20A for power > 3700W). The connection has to be permanent – 

with no plug connectors. The current loop has to be provided with a safety fuse 

and with an inbuilt device which would disconnect all poles in case of category III 

overvoltage. 

The connecting of the conductors of the supply cord of the appliance has to be 

carried out in the following way: 

 •

conductor with brown insulation – to the phase conductor of the electrical 

installation (L)

 •

conductor with blue insulation – to the neutral conductor of the electrical 

installation (N)

 •

conductor with yellow-green insulation – to the safety conductor of the 

electrical installation (

)

3.3. 

Water heaters without power cord

The appliance has to be connected to a separate current loop of the stationary 

electrical installation, provided with a safety fuse with nominal current of 16A (20A for 

power > 3700W). Connection is done using copper single core (rigid) conductors – 

cable 3 x 2.5 mm² for a total power of 3000W (cable 3 x 4.0 mm² for power > 3700W).
In the electrical circuit providing power supply for the appliance there has to an 

inbuilt device which would disconnect all poles in case of category III overvoltage.
To install the power supply wire to the water heater, remove the plastic cover 

(Fig.7.3). 
Connect the power supply wire in compliance with the marking on the terminals, as 

it follows:

 •

the phase – to marking A or A1, L or L1;

 •

the neutral – to marking N (B or B1 or N1)

 •

The safety wire must be connected to the screw joint marked with 

After installation, put the plastic cover back in its place!

Explanations to Fig. 6: 

T1, T2 - thermal circuit breaker; TR/EC - thermal regulator/ electronic control; R1, R2 – 

heating element; F1, F2 - flange; S1, S2 - sensor; Wi-Fi module

(for models with Wi-Fi)