Operation And Fitting Instructions; Operating Conditions; Electrical Installation - Drazice OKC 160 NTR/BP Operating And Installation Manual

2 OPERATION AND FITTING INSTRUCTIONS

2.1 OPERATING CONDITIONS

The tank shall only be used in accordance with the conditions specified on the power plate
and in instructions for electric wiring. The cold water inlet of each individually closable heater
must be fitted with a seal, test tap or plug to check the non-return valve, as well as a non-
return valve and safety valve. Heaters with a volume of more than 200 litres must also be
fitted with a pressure gauge. Besides the legally acknowledged national regulations and
standards, also conditions for connection defined in the local electric and water works have
to be adhered to, as well as the installation and operation manual.
The temperature at the place of the tank installation must be higher than +2°C; and the room
must not freeze. The appliance has to be mounted at a convenient place; it means that the
appliance must be easily available for potential necessary maintenance, repair or
replacement, as the case may be.
If water is strongly calcareous we recommend that any of the common decalcifying devices
was installed in front of the tank, or that the thermostat was set to the maximum operating
temperature of 60
adequate quality shall be used.
300 litre volume tanks are screwed onto the bottom wooden palette with M12 screws. When
the tank is released from the pallet and prior to its putting into operation, 3 screw legs supplied
have to be installed as the product accessories. With three adjustable legs, the tank may be
positioned vertically to the base within 10 mm range.

2.2 ELECTRICAL INSTALLATION

Wiring for: OKC 160 NTR/BP, OKC 200 NTR/BP, OKC 200 NTRR/BP, OKC 250 NTR/BP, OKC 250 NTRR/BP
Water tank must be equipped with a universal electric heating unit with either set or adjustable heating
element performance. A heating unit consists of a flange, to which one or three wells for ceramic heating
elements and one thermowell are welded (see Figure 7) The unit is fixed with 8 screws M10 with spacing
168 mm.
In the wiring plastic cover, there is a thermostat and a safety fuse; tank operation control light; and a lead-in
wire bushing.
The sensors must be inserted all the way in; first the thermostat and then the safety fuse.
The performance of heating unit may be adjusted based on either required heating time or connecting
possibilities of electric energy distribution in the place of use.
o C (setting to position "60"). For proper operation, drinkable water of
- 16 -