Drazice TJ 2" HP 9 kW Manuale operativo e di installazione - Pagina 8

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2.4

MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES

FAILURE SYMPTOM

Bivalent source does not

heat

Heating element failure

Do not attempt to repair the failure yourselves. Seek either expert or service help. It does not

take much for an expert to remove the defect. When making a repair appointment, report

the type and serial number you find on the performance plate of your bivalent source.

3 IMPORTANT NOTICES

3.1

INSTALLATION REGULATIONS

Each heat source shall be equipped with a non-lockable locking device, see ČSN 06 0830.

When active, the element and the thermowells must be surrounded with a sufficient amount

of water from all sides.

Thermo water flow must not be prevented.

Mounting positions – horizontal or vertical from under (Chapter 2.1, Figure 3).

The maximum pressure in the tank is 10 bar.

Minimum flow for safe function of bivalent source is 1000 l/h.

Considering the insulation type, the bivalent source is not suitable in the joint heating and cooling

circuit with temperature below dew point (15 °C).

Both the electric and water installation must follow and meet the requirements

and regulations relevant in the country of use!

3.2

SPARE PARTS

Always state the type of the heating unit and the name of the spare part when placing an order.

Safety fuse

Wires

Sealing ring

TROUBLESHOOTING

Safety thermostat is automatically non-

returnable, it is activated by pressing a button on

the thermostat body.

Safety thermostat is connected but the bivalent

source does not heat Have the heating unit

repaired by an authorized company.

Table 2

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