Drazice OKC 300 NTR/HP Manuale operativo e di installazione - Pagina 4

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1 TECHNICAL SPECIFICATION OF PRODUCT

Indirect stationary heater OKC 250 (300, 400, 500, 750, 1000) NTR / HP is designed for water heating in

conjunction with a heat pump. Reheat can be carried out by the electric heater TJ 6 / 4".

The heater vessel is welded from a steel plate and as a whole is protected by enamel resistant to hot water.

Magnesium anode is added in the vessel as an additional protection against corrosion, which regulates the

electric potential of the inside of the vessel and thus reduces the effects of corrosion. Inside the vessel

there is a welded heat exchanger made of steel pipe with enamelled outer coating, and connections of hot

and cold water, circulation and thermostat tank.

The pipe heat exchanger is only intended for the heating circuit.

On the side of the heater there is a cleaning and inspection aperture ending with a flange of 110 mm

diameter, the pitch of eight M8 bolts is 150 mm. The heater is equipped with a G 1 ½ " aperture for

screwing an additional heater. This option is used, if the heater is connected into the system with a heat

pump, for water reheating at the top of the heater to the desired temperature. The tank is insulated by 50

or 60 mm of polyurethane foam not containing CFCs and the casing of the heater is made of plastic.

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