Drazice OKC 200 NTRR / BP Kullanım ve Kurulum Kılavuzu - Sayfa 13

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Drazice OKC 200 NTRR / BP Kullanım ve Kurulum Kılavuzu
2.5 CONNECTION OF APPLIANCE TO HOT WATER HEATING
SYSTEM
a) Water heating by electric energy
After the appliance 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 thus 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 appliance 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 (Figure 3). The time of heating using the heat exchanger depends on the temperature
and flow of water in the hot water heating system. An appliance 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.
It is recommended to install stop valves on the heating water inlet and outlet (for possible
dismantling of the appliance). The valves have to be as close to the appliance as possible to
avoid higher thermal losses.
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