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(see dimension G in the Installation Drawing), in order to avoid unnecessary dismounting of the heater during the servicing intervention. TECHNICAL PROPERTIES OF THE APPLIANCE Type OTG 50 SM OTG 80 SM OTG 100 SM OTG 120 SM Volume Rated pressure [MPa (bar)]...
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2) Energy consumption to maintain the temperature of water in the water heater at 65 °C if the surrounding temperature is 20 °C, measured according to EN 60379. OTG 50 SM 250 210 OTG 80 SM 245 360 OTG 100 SM...
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Closed (pressure) system Open (non-pressure) system Legend: 1 - Safety valve 6 - Checking fitting 2 - Test valve 7 - Funnel with outlet connection 3 - Non-return valve 8 - Expansion tank 4 - Pressure reduction valve H - Cold water 5 - Closing valve T - Hot water Between the water heater and safety valve, no closing valve may be built in because...
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CAUTION: Before any intervention into the interior of the water heater, disconnect it from the power supply network! OPERATION AND MAINTENANCE After connecting to the water and power supply, the heater is ready for use. The heater is equipped with an electronic regulator that enables the setting of the temperature of water, adjustment of the heater’s operation to your habits ("ECO "...
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consumption pattern for seven consecutive days. After that, the recorded pattern starts to be used automatically and the heater prepares the hot water based on the measurements from the previous week. At the same time, the heater continues to record the consumption.
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When the water heater is not in use for a longer period of time and is switched off or disconnected from the power supply, it must be emptied in case of danger of freezing. Water from the heater is drained through the inlet pipe of the heater. For this purpose, a special fitting (T-fitting) must be mounted between the relief valve and the heater inlet pipe, or a discharge tap.
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