Capacity 1000 L (1 ) D: external diameter 950 mm H: overall height 2250 mm eh: side connection 3 " GAS/F R: side connection 1M " GAS tm: probe tube connection for sensors ½ " GAS/F Empty weight (approx.) 205 kg Thermal insulation Rigid, PU Static heat losses EN12897 114 W Tank for VERTICAL installation on floor Table 4: Specifications of water storage tank [15] Auxiliary heater The auxiliary heater is used to assure the absorption chiller operation and should be activated whenever the heat pipe collectors’ outlet temperature is less than the temperature of the user-specified maximum (Tset) (the maximum temperature allowed in the generator of the absorption chiller). For the continuous operation of absorption unit, indeed, the auxiliary heater should automatically operates whenever tank load temperature is below 90°C: in case the temperature sensor indicates that the water is below 90°C, the heater should add hot water at 90°C. The 40 kW auxiliary heater is directly connected to the tank. The auxiliary heater belongs to OKA s.a.s. and here below its specifications: BRAND OKA s.a.s. MODEL Pirotubular gas heater: L1PB-F7/40 THERMAL LOAD 40 kW RATED OUTPUT POWER 37 kW EFFICIENCY AT RATED THERMAL LOAD 92,2 % RAED INPUT ELECTRIC POWER 130 W POWER SUPPLY a.c. 220/ 60 Hz UNDER NORMAL WORKING CONDITIONS 42 dB BOILER NET WEIGHT 55 kg BOILER SIZE (HxWxTH) 78x54x35 mm Gas Type & Rated Pressure (T) NG 2.000 Pa (R) Town Gas 1.000 Pa Hot Water System Range of output power 40 kW of water temperature 38- 85 °C Rated capacity of hot water (△t=25 °C) 21,3 l/min Range of water pressure 0,3 - 8 bar Hot Water System Fitting Dimension pipe diameter of heating (to the tank) G ¾ inch (mayor diameter: 26,441; minor diameter: 24,117) Inlet/outlet pipe diameter of hot water (alimentation) G ½ inch (mayor diameter: 20,955; minor diameter: 18,631) ut diameter of gas G ¾ inch (mayor diameter: 26,441; minor diameter: 24,117) Fitting Dimension Smoke vent Dimension Coaxial pipe ø60-ø100 mm
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