65 01202 662500 | sales@hamworthy-heating.com | hamworthy-heating.com Technical data *Based on 1013.25 mbar and 15°C. Dorchester DR-LL model Units DR-LL 50 - 288 DR-LL 70 - 344 DR-LL 90 - 322 Water Continuous output with 44°C ΔT l/h 970 1300 1800 1st hour output with 44°C ΔT l 1400 1800 2200 Continuous output with 50°C ΔT l/h 850 1200 1600 1st hour output with 50°C ΔT l 1200 1600 1900 Continuous output with 55°C ΔT l/h 770 1100 1400 1st hour output with 55°C ΔT l 1100 1400 1700 Storage capacity l 291 347 325 Maximum working pressure bar 8 8 8 Load profile - XXL XXL 3XL Energy Water Heating energy efficiency % 66 66 71 Net combustion efficiency (gross) % 91 (82) 90 (81) 91 (82) ErP efficiency rating - B B N/A Heating-up time, ΔT = 44°C min. 18 16 11 Heating-up time, ΔT = 50°C min. 21 19 13 Heating-up time, ΔT = 55°C min. 23 20 14 Nat Gas Input, gross kW 60.0 81.1 103.3 Input, net kW 54.0 73.0 93.0 Output – maximum kW 49.1 66.4 84.4 Gas inlet pressure – nominal mbar 20 20 20 Gas flow rate – maximum @1013.25 mbar and 15°C m3/h 5.7 7.7 9.8 Flue Mass flow rate flue gases (round draught diverter)* kg/h 161 234 271 Mass flow rate flue gases (draught diverter type 1)* kg/h 126 196 310 Mass flow rate flue gases (draught diverter type 2 - standard)* kg/h 118 184 258 Flue gas temperature (round draught diverter)* °C 161 172 125 Flue gas temperature (draught diverter type 1)* °C 126 97 107 Flue gas temperature (draught diverter type 2 - standard)* °C 133 129 121 NOx emission, dry air free, European Class 6. Maximum (at part load) mg/kWh 45 35 31 Electrical Power consumption (nominal) W 65 75 100 Electrical supply Vac 230V 1PH 50Hz 230V 1PH 50Hz 230V/50Hz Voltage tolerance % of Vac (-15+10%) (-15+10%) (-15+10%) Misc. Sound level dB 64 68 70 Number of magnesium anodes - 4 4 4 Weight when empty kg 252 276 310 Approximate shipping weight kg 282 311 347 Maximum floor load/ weight filled with water kg 540 620 632 Dimensions Note: For dimensional details including the different draught diverters please refer to the full product brochure. Clearances: 1000mm at front 500mm at sides 1000mm at top Reference Dimension DR-LL 50-288 DR-LL 70-344 DR-LL 90-322 B Height 1560 1740 1740 D Diameter 705 705 705 E1 Depth 605 605 605 WATER HEATERS & CALORIFIERS 1 2 5 6 D B S N E1 D B E1 DRLL
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