A1 BO 15-e A1 BO 20-e A1 BO 27-e A1 BO 34-e
Oil (condensing) Consumption Min kg/h 1.03 1.04 1.72 2.17
    Max kg/h 1.29 1.75 2.34 2.94
  NOx class (EN 303-2)   3 3 3 3
  CO class (EN 303-2)   3 3 3 3
  NOx (EN 267) mg/kWh 82 (1) 83 (1) 84 (1) 85 (1)
  CO (EN267) mg/kWh 11 (1) 12 (1) 13 (1) 14 (1)
  Maximum bio-heating oil ratio % 20 20 20 20
Central heating Heat input Qn (net calorific value) Nom Min kW 12.2 (2) 12.3 (2) 20.4 (2) 25.7 (2)
      Max kW 15.1 (2) 20.8 (2) 27.8 (2) 34.9 (2)
  Heat input Qn (gross calorific value) Nom Min kW 13.0 (2) 13.1 (2) 21.8 (2) 27.5 (2)
      Max kW 16.1 (2) 22.2 (2) 29.7 (2) 37.3 (2)
  Output Pn at 80/60°C Min kW 12.0 (2) 12.0 (2) 20.0 (2) 24.8 (2)
    Nom kW 14.7 (2) 20.3 (2) 27.0 (2) 33.7 (2)
  Output Pnc at 50/30°C Min kW 12.4 (3) 12.4 (3) 20.6 (3) 25.8 (3)
    Nom kW 15.3 (3) 21.1 (3) 27.7 (3) 34.7 (3)
  Factory setting Output Nom kW 15 18 25 30
  Water pressure (PMS) Max bar 4 (2) 4 (2) 4 (2) 4 (2)
  Water temperature Max °C 80 80 80 80
  Efficiency Net calorific value % 98 (2) 98 (2) 97 (2) 97 (2)
    Gross calorific value % 91 (2) 91 (2) 91 (2) 90 (2)
  Efficiency full load heat input (80/60) Net calorific value % 98 (2) 98 (2) 97 (2) 97 (2)
    Gross calorific value % 91 (2) 91 (2) 91 (2) 90 (2)
  Efficiency full load heat input (50/30) Net calorific value % 101 (3) 101 (3) 100 (3) 98 (3)
    Gross calorific value % 95 (3) 94 (3) 93 (3) 92 (3)
  Efficiency part load 30% Qa Net calorific value % 102 (2) 102 (2) 101 (2) 100 (2)
    Gross calorific value % 95 (2) 95 (2) 94 (2) 94 (2)
  Efficiency part load 30% Qn Net calorific value % 102 (2) 102 (2) 101 (2) 100 (2)
    Gross calorific value % 95 (2) 95 (2) 94 (2) 94 (2)
Heat losses Stand-by boiler qS (Stand-by losses EN 304) kW 0.3 (2) 0.3 (2) 0.3 (2) 0.2 (2)
Supply air Connection mm 125 125 125 125
  Concentric   Yes Yes Yes Yes
Flue gas (Qn,max) Temperature (80/60) Max °C 63 85 87 110
  Connection mm 80 80 80 80
  Length DN80/125 Max m 16 16 16 11
  Condensation flow (50/30°C) Max l/day 17.4 24.0 32.0 40.2
  Condensate drain hose inch 1.5 1.5 1.5 1.5
  Condensate drain hose DN 40.0 40.0 40.0 40.0
  Flue gas mass flow (humid) at 80/60°C g/s 6.81 9.08 12.25 15.43
    at 40/30°C g/s 6.49 8.67 11.61 14.62
  Flue gas temperature at 80/60°C °C 75 85 89 97
    at 40/30°C °C 52 65 68 73
  Available overpressure Pa 100 100 80 80
Flue gas (Qn,min) Temperature (80/60) Max °C 71 71 80 85
  Condensation flow (50/30°C) Max l/day 18.7 18.9 31.3 39.5
  Flue gas mass flow (humid) at 80/60°C g/s 5.32 5.32 9.03 11.29
    at 40/30°C g/s 5.17 5.17 8.67 10.69
  Flue gas temperature at 80/60°C °C 71 71 80 85
    at 40/30°C °C 48 48 53 68
  Available overpressure Pa 100 100 80 80
Mounting Floor Floor Floor Floor
Casing Colour   Traffic white (RAL9016) / Dark grey (RAL7011) Traffic white (RAL9016) / Dark grey (RAL7011) Traffic white (RAL9016) / Dark grey (RAL7011) Traffic white (RAL9016) / Dark grey (RAL7011)
  Material   Plastic + sheet metal Plastic + sheet metal Plastic + sheet metal Plastic + sheet metal
Dimensions Unit Height Casing mm 1,100 1,100 1,220 1,340
      Minimum installation height mm 1,340.0 1,340.0 1,470.0 1,590.0
    Width mm 625 625 625 625
    Depth mm 720 720 720 720
  Packed unit Height mm 1,280 1,280 1,480 1,480
    Width mm 650 650 650 650
    Depth mm 890 890 890 890
Weight Unit Empty kg 81 81 96 113
    Full kg 84 84 101 118
  Boiler Empty kg 49.0 49.0 58.0 67.0
  Burner Empty kg 9.5 9.5 9.5 10.5
  Packed unit Empty kg 121 121 140 155
Packing Material   Cardboard, Wood (pallet) Cardboard, Wood (pallet) Cardboard, Wood (pallet) Cardboard, Wood (pallet)
  Weight kg 10 10 10 10
Boiler Water volume l 3.0 3.0 4.5 5.0
Heat exchanger Quantity   1 1 1 1
  Body material   Aluminium Aluminium Aluminium Aluminium
3-way valve Coefficient of flow (kV) Space heating m³/h 9 9 9 9
    Domestic hot water tank m³/h 9 9 9 9
    Unit m³/h 8.6 8.6 8.6 8.6
  Transit time sec 6.0 6.0 6.0 6.0
Pump Nr of speeds   PWM PWM PWM PWM
  Power input max W 70 70 70 70
  Power input min W 4 4 4 4
  Maximum pumping height m 7.0 7.0 7.0 7.0
Oil filter Diameter perforations mm 0 0 0 0
Water circuit - Central heating Piping connections diameter inch G 1" (male) G 1" (male) G 1" (male) G 1" (male)
  Safety valve bar 3 3 3 3
  Drain valve / fill valve   Yes Yes Yes Yes
  Shut off valve   No No No No
  Air purge valve   Yes Yes Yes Yes
  Pressure Heating Max. bar 3 3 3 3
      Min. bar 1 1 1 1
  Temperature Max °C 80.00 80.00 80.00 80.00
Sound power level Nom. dBA 54 (4) 55 (4) 55 (4) 56 (4)
Installation place Indoor Indoor Indoor Indoor
Piping connections Water inlet heat exchanger diameter inch G1" (male) G1" (male) G1" (male) G1" (male)
  Water outlet heat exchanger diameter inch G1" (male) G1" (male) G1" (male) G1" (male)
Service hole Size Diameter mm 331 331 331 331
Control systems Infrared remote control   No No No No
  Wired remote control   RoCon U1 RoCon U1 RoCon U1 RoCon U1
  Class of temperature control   II II II II
  Contribution to seasonal space heating efficiency % 2.0 2.0 2.0 2.0
General Supplier/Manufacturer details Name and address   ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Güglingen ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Güglingen ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Güglingen ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Güglingen
  Product description Model identifier   154,960 154,961 154,962 154,963
    Condensing boiler   Yes Yes Yes Yes
Space heating General Prated kW 15 20 27 34
    P1 (Usefull heat output at 30% of rated heat output and low-temp regime) kW 4.4 6.1 8.1 10.1
    P4 (Useful heat output at rated heat output and high-temp regime) kW 14.7 20.3 27.0 33.7
    Ƞs (Seasonal space heating efficiency) % 91 91 91 90
    Ƞ1 (Useful efficiency at 30% of rated heat output and low-temp regime) % 95.4 95.4 94.4 93.6
    Ƞ4 (Useful efficiency at rated heat output and high-temp regime) % 91.4 91.4 90.8 90.4
    Seasonal space heating eff. class   A A A A
  Auxiliary electricity consumption elmax (at full load) kW 0.200 0.215 0.210 0.220
    elmin (at part load) kW 0.200 0.215 0.210 0.220
    Psb (Standby mode) kW 0.003 0.003 0.003 0.003
  Other NOx emission mg/kWh 82 82 104 86
    Ƞson (seasonal space heating energy eff. in active mode) % 95 95 94 93
    Pign (ignition burner power consumption) kW 0.000 0.000 0.000 0.000
    Pstby (standby heat loss) kW 0.023 0.032 0.042 0.039
Power supply Phase   1~ 1~ 1~ 1~
  Frequency Hz 50 50 50 50
  Voltage V 230 230 230 230
Class IP   IP X0B IP X0B IP X0B IP X0B
Electrical power consumption Max.(including Pump) KW 0 0 0 0
  Max. (excluding Pump) KW 0 0 0 0
  Standby KW 0 0 0 0
  3-way valve Max. KW 0 0 0 0
Current Fuse Size A 4 4 4 4
    Phase   1~ 1~ 1~ 1~
    Pole   1 1 1 1
Sensor Storage tank sensor   NTC NTC NTC NTC
Pump Type   High ESP pump (OPHP) High ESP pump (OPHP) High ESP pump (OPHP) High ESP pump (OPHP)
Notes Acc. EN 267 Acc. EN 267 Acc. EN 267 Acc. EN 267
  Acc. EN 304 Acc. EN 304 Acc. EN 304 Acc. EN 304
  Acc. EN15034 Acc. EN15034 Acc. EN15034 Acc. EN15034
  All data mentioned is preliminary information All data mentioned is preliminary information All data mentioned is preliminary information All data mentioned is preliminary information