Oil fired

Oil fired water heaters are most suited to applications where a mains gas supply is not available. The oil fired range from Andrews Water Heaters have an exceptionally fast recovery rate, making them suitable for commercial use where there is a constant demand for hot water.

Because the hot water generation and space heating are separate, they are very economical to operate. They are commonly located close to the point of use, minimising heat loss. Our oil fired water heaters have previously been installed in rural applications including colleges, small business parks and leisure facilities.

  • Six models available which can be vented or unvented
  • Matched burner and controls for improved performance
  • Units can be installed singly or in parallel, depending on the system requirements
  • Suitable for kerosene and gas oil (28 and 35 second oil)
  • Vitreous enamel lined storage tanks to improve thermal efficiency
  • Exhaust flue fan option allowing horizontal termination
  • Cathode protected by a magnesium anode, extending the life expectancy of the unit
  • An optional maintenance free Correx anode is also available

Model OFS25 OFS29 OFS63 OFS90 OFS108 OFS163
Storage Cap Ltrs 192 265 146 146 378 306
Storage Cap Galls 42 58 32 32 83 67
Rec Thro 44c L/H 491 577 1227 1759 2110 3166
Rec Thro 44c GPH 108 127 269 386 463 694
Rec Thro 56c L/H 390 443 975 1398 1677 2516
Rec Thro 56c GPH 86 97 214 307 368 552
Heat Input kW 30.8 34.9 71.8 102.6 123.1 184.6
Heat Output kW 25.2 28.2 63 90.3 108.3 162.5
Heat Input Btu/Hr 105,000 119,000 245,000 350,000 420.000 630,000
Heat Output Btu/Hr 86,000 97,580 215,600 308,000 369,600 554,400
Efficiency % 82 82 88 88 88 88
Fuel BS2869 Kerosene Class C2
Fuel BS2869 Gas Oil Class D
Burner Type EOGB BTL4 BTL4 BTL6 BTL10 BTL10 BTL20
Elec. Data V 220/240 220/240 220/240 220/240 220/240 220/240
Frequency Hz 50 50 50 50 50 50
Power Cons. Watt 110 110 110 110 110 185
Start Current Amp 2.2 2.2 2.2 2.2 2.2 2.0
Run Current Amp 0.87 0.87 0.87 0.87 0.87 1.28
Fuse Amp 5 5 5 5 5 5
Nozzle Fitted Kero 0.75x80s 0.85x80s 1.65x80s 2.50x80s 3.00x80s 3.50x80s
Pressure PSI 195 211 206 214 187 174
Pressure Bar 13.5 14.5 14.2 14.8 12.9 12
Smoke No. 0 0 0 0 0 0
Flue Gas Temp ºC 380 380 260 260 260 260
CO2 % 11.5 11.5 11.5 11.5 11.5 11.5
O2 % 5.5 5.5 5.5 5.5 5.5 5.5
Flue Size (Secondary) mm 150 150 200 200 2000 200
ins 6 6 8 8 8 8
Flexible Hose Connection Size G 0.25 0.25 0.25 0.25 0.25 0.25
Fuel Cons. Kero L/H 3.2 3.7 7.5 10.8 0.25 0.25
Fuel Cons. Kero GPH 0.70 0.81 1.65 2.4 2.8 4.3
Fuel Cons. Gas Oil L/H 3.1 3.5 7.2 10.3 12.4 18.6
Fuel Cons. Gas Oil GPH 0.68 0.77 1.60 2.3 2.7 4.1
Cold Inlet Top BSP 0.75 1 1.5
Cold Inlet Front BSP 1.5 1.5 1.5 1.5
Cold Inlet Rear BSP 1.5 1.5 2 2
Hot Inlet Top BSP 0.75 1 1.5
Hot Inlet Front BSP 1.5 1.5 1.5 1.5
Hot Inlet Rear BSP 1.5 1.5 2 2
Drain Port BSP 0.75 0.75 0.75 0.75 0.75 0.75
Max Work Press PSI 150 150 150 150 150 150
Max Work Press Bar 10.3 10.3 10.3 10.3 10.3 10.3
Max Test Press PSI 300 300 300 300 300 300
Max Test Press Bar 20.6 20.6 20.6 20.6 20.6 20.6

Model OFS25 OFS29 OFS63 OFS90 OFS108 OFS163
Weight Empty inc Burner Kg 118.5 143.5 195 195 345 395
Weight Empty inc Burner Lbs 260 315 429 429 761 871
Weight Full inc Burner Kg 309 406 340 340 722 699
Weight Full inc Burner Lbs 680 895 749 749 1591 1541
Shipping Height mm 1645 1740 1530 1530 2434 2134
Shipping Width mm 686 737 991 991 965 965
Shipping Depth mm 737 775 883 888 1073 1073

Learn more about the Oil fired range by downloading product literature.

Find out more about the Oil fired range by reading the case study below.

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Andrews Water Heaters