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1.4
OPERATING AND INSTALLATION MANUAL FOR TYPES:
OKC 750 NTR / BP, OKC 1000 NTR / BP, OKC 750 NTRR / BP, OKC 1000 NTRR /
BP
1.4.1
PRODUCT DESCRIPTION
The tank receptacle is welded from a steel plate; the exchangers from a steel tube and, as a unit,
it is entirely coated with hot water resistant enamel. For additional corrosion protection a magnesium anode
is mounted in the upper part of the tank to adjust the electric potential inside the tank, reducing the risk of
corrosion. The vessels have outlets of hot and cold water and a circulation opening welded to them. At the
tanks on the side under the plastic cover, there is a cleaning and revision opening ended with a flange; various
performance heating units may be mounted into the opening. The tank includes opening G 6/4“ which
enables the assembly of heating unit series TJ G 6/4“. Such version is used when the tank is connected in
solar system or a system with a heat pump, to heat water in the upper part of the tank to the temperature
required. The tank is placed on the ground, next to the heating water source, or in its vicinity. The tank is
tested with pressure of 0.9 MPa, heat exchangers with 1.5 MPa. Temperature indicator is placed on the
heater’s housing. The tank is insulated with 50 mm of polyurethane foam. The plastic housing (reinforced
with polystyrene) is fitted on the tank.
The NTR version has a heat exchanger located in the bottom part of the tank, and one heating water source
is used for heating.
The NTRR version is equipped with two exchangers for an optional combination of two heating water sources;
both exchangers can be combined in a series. The NTR/BP and NTRR/BP series do not have a heating element.
The tank cannot be used for flow heating of hot water in an exchanger.
