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1
PRODUCT TECHNICAL SPECIFICATION
1.1
FUNCTION DESCRIPTION
Thanks to their construction and number of variants, the OKC 160 – 1000 NTR(R)/BP series water tanks enable
economic preparation of hot service water (HSW) by means of various power sources. Their nominal
performance provides sufficient amount of hot water for flat units, premises, restaurants, and similar
establishments. For HSW reheat, electricity, various types of central heating boilers, recoverable energy
sources (heat pumps, solar collectors) and combination of those can be chosen.
Service water heating via thermal energy through heat exchanger
Closing valves of the heat exchanger must be opened which ensures heating water flow from the hot water
heating system. Together with a closing valve, it is recommended to install an air outlet valve at the inlet
to the heat exchanger in order to bleed the heat exchanger as needed, in particular before the beginning
of the heating season. The time it takes to heat up using the heat exchanger depends on the temperature
and flow of water in the hot water heating system.
1.2
OPERATING AND INSTALLATION MANUAL FOR TYPES
:
OKC 160 NTR/BP, OKC 200 NTR/BP, OKC 250 NTR/BP, OKC 200 NTRR / BP, OKC
250 NTRR / BP
1.2.1
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 200 - 250 l 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 42 mm of polyurethane foam. The heater housing is made
of steel sheet provided with a powder coating.
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.
