Drazice OKCV 180 Посібник з експлуатації та встановлення - Сторінка 4
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horizontal mounting
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1 TECHNICAL SPECIFICATION OF PRODUCT
1.1 FUNCTION DESCRIPTION
The heater is designed for accumulation heating of service water using electricity or thermal energy via an
exchanger (for the combined design only). Water is heated by an electric element (or a heat exchanger) in
an enamelled thermally insulated accumulator at the time defined by the power supplier. The element is at
the time of heating controlled by a thermostat the temperature of which can be adjusted continuously
(within the range between 5°C and 74°C). Once the selected temperature is reached, heating interrupts
automatically. Water accumulated in the tank is then used for consumption. The tank keeps constant
pressure of water from the water main. If the combination faucet hot water valve is opened, water from
the water supply conduit pressed out by cold water pressure flows out of the heater. Hot water flows out
through the top part, and water flowing in remains in the bottom part of the heater. Pressure principle
allows hot water withdrawal at any place from the heater (Figure 7, Figure 8).
Operating activity:
a) Water heating by electric energy
After the heater is connected to electric network, the heating element starts heating water. The element is
turned on and off by a thermostat. After reaching the temperature set, the thermostat switches off the
electric circuit and discontinues water heating. The control light signals if the element is in operation (light
is on) or if it is off (the light goes out). In case of longer operation without using the heated volume, the
thermostat has to be set to position 5°C to 8°C (set the "snowflake" symbol on the thermostat selector) to
avoid its freezing, or electricity supply to the heater has to be switched off. In combined versions, the stop
valve on the inlet to the exchanger has to be closed, which prevents heating water in the hot water heating
system.
b) 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 of heating using the heat exchanger depends on the temperature and flow of
water in the hot water heating system. A combined heater is made in universal design - depending on the
need of connecting the closing valves to the heating element either from the right, or from the left.
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