Drazice Okce 125 Manual de funcionamiento e instalación - Página 4
Navegue en línea o descargue pdf Manual de funcionamiento e instalación para Calentador de agua Drazice Okce 125. Drazice Okce 125 16 páginas. Tank-type water heater for vertical
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1 PRODUCT TECHNICAL SPECIFICATION
1.1 FUNCTION DESCRIPTION
The construction of the OKC 100,125 NTR series tanks and their variety allow economic preparation of hot
service water (HSW) using different energy sources. Their nominal performance provides sufficient amount
of hot water for flat units, premises, restaurants, and similar establishments. HSW can be heated by electric
energy, different types of central heating boilers, and combinations of those.
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 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. A flange is welded onto the upper bottom of the
receptacle with a flange lid screwed to it. A sealing ring is inserted between the flange lid and the flange.
Thermowells for placing a heating element and sensors of regulation thermostat and safety fuse are
located in the flange lid. Electric wiring is placed underneath the plastic removable cover. The temperature
of water can be set using the thermostat.
For additional corrosion protection a magnesium anode is mounted in the upper part of the tank to adjust
the electric potential inside the receptacle, thus reducing the risk of its corrosion. Tanks have hot and cold
water outlets welded on, and a circulation opening. The tank is insulated with polyurethane foam of 40 -
65 mm thickness. The shell of the tank is steel plate coated with powder dye; connecting pieces are metal
coated. The entire heater stands on three rectification screws with a possibility of levelling floor
unevenness within the range of 10 mm. The heater is to be placed on the ground. The receptacle is tested
with pressure of 0.9 MPa, and exchangers with pressure of 1.5 MPa.
NTR version has one heat exchanger located in the lower part of the tank, and uses one source of heating
water for heating.
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