GW22T GW26T GW37T
Gas Supply pressure France   20/25 - 29/37 20/25 - 29/37 20/25 - 29/37
    Germany   20-20-50/50 20-20-50/50 20-20-50/50
  Category France   II2Er3+ II2Er3+ II2Er3+
    Germany   II2ELL3B/P II2ELL3B/P II2ELL3B/P
  Connection Diameter mm 26.44 26.44 26.44
  Consumption (G20) Min m³/h 0.51 0.65 0.91
    Max m³/h 2.37 2.87 3.85
  Consumption (G25) Min m³/h 0.59 0.75 1.09
    Max m³/h 2.76 3.34 4.63
  Consumption (G30) Min m³/h 0.15 0.19 0.27
    Max m³/h 0.69 0.84 1.15
  Consumption (G31) Min m³/h 0.19 0.25 0.36
    Max m³/h 0.91 1.11 1.51
  NOx class   5 5 5
  NOx level (G20) mg/kWh 38.3 40.17 43.61
  NOx level (G25) mg/kWh 38.21 41.69 45.18
  NOx level (G30) mg/kWh 58.3 64.38 83.34
Central heating Heat input Qn (net calorific value) Nom Min kW 4.8 6.1 8.9
      Max kW 22.4 27.1 37.7
  Heat input Qn (gross calorific value) Nom Min kW 5.33 6.77 9.88
      Max kW 24.88 30.1 41.87
  Output Pn at 80/60°C Min kW 4.5 5.8 8.5
    Nom kW 21.6 26.2 36.5
  Output Pnc at 50/30°C Min kW 5.21 6.64 9.58
    Nom kW 24.19 29.13 39.96
  Output at 37/30°C Nom kW 7.16 8.72 12.08
  Factory setting Output Nom kW 22.4 27.1 37.7
  Water pressure (PMS) Max bar 3 3 3
  Water temperature Max °C 85 85 85
  Efficiency full load heat input Net calorific value % 108 107.5 106
    Gross calorific value % 97.25 96.8 95.45
  Efficiency part load 30% Qa Net calorific value % 106.6 107.3 106.8
    Gross calorific value % 95.99 96.62 96.17
  Operation range Min °C 20 20 20
    Max °C 85 85 85
Domestic hot water Temperature Max °C 70 70 70
    Factory setting °C 47 47 47
Supply air Connection mm 100 100 100
  Concentric   Yes Yes Yes
Flue gas Temperature Max °C 74 74 85
  Connection mm 60 60 60
  Length 2x DN80 Max m 60 60 40
  Length DN60/100 Max m 6 6 6
  Length DN80/125 Max m 12 12 12
  Mass flow (G20) Max kg/h 35.64 45.36 57.96
  Mass flow (G25) Max kg/h 35.64 43.92 57.6
  Mass flow (G30) Max kg/h 34.56 41.76 54.36
  Mass flow (G31) Max kg/h 35.64 41.76 54.36
  Available overpressure Pa 65 110 110
  Condensate drain hose inch 0.75 0.75 0.75
Mounting Wall Wall Wall
Casing Colour   Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003)
Dimensions Unit Width mm 403 403 403
    Depth mm 730 733 733
    Diameter mm 345 410 445
  Packed unit Height mm 840 840 840
    Width mm 460 460 460
    Depth mm 410 490 520
Weight Unit Empty kg 33 38 43
  Packed unit Empty kg 36 42 47
Packing Material   Carton, EPS Carton, EPS Carton, EPS
  Weight kg 3.5 3.5 4
Heat exchanger Tube material   AISI AISI AISI
  Body material   PP+GF30 PP+GF30 PP+GF30
3-way valve Type   AC Motor AC Motor AC Motor
  Inlet inch 3/4 3/4 3/4
  Outlet Type inch 3/4 3/4 3/4
  Transit time sec 4 4 4
Fan motor Type   AC Motor AC Motor AC Motor
Pump Type   UPM 15/70 UPM 15/70 UPM 15/70
  Nr of speeds   PWM PWM PWM
  Power input W 70 70 70
  Maximum pumping height m 7 7 7
Automatic firing unit Type   Electronic Electronic Electronic
Expansion vessel Volume l 7 8 12
  Max. water pressure bar 3 3 3
  Pre pressure bar 1 1 1
Water circuit - Central heating Piping inch 0,71 0,71 0,71
  Piping connections diameter inch 3/4 3/4 3/4
  Piping material   Cu Cu Cu
  Pressure Heating Max. bar 3 3 3
  Safety valve bar 3 3 3
  Air purge valve   Yes Yes Yes
  Drain valve / fill valve   Yes Yes Yes
  flowswitch   Yes Yes Yes
  Manometer   No No No
  Shut off valve   No No No
Water circuit - Domestic hot water side Piping connections Cold water in / Hot water out inch 3/4" (male) 3/4" (male) 3/4" (male)
  Piping material   Cu Cu Cu
Water circuit Manometer   Digital Digital Digital
Installation place Indoor Indoor Indoor
Piping connections Water inlet heat exchanger diameter inch 3/4 3/4 3/4
  Water outlet heat exchanger diameter inch 3/4 3/4 3/4
  Cold water in Diameter inch 3/4'' 3/4'' 3/4''
  Hot water out Diameter inch 3/4" 3/4" 3/4"
  Drain back inch 1/8 1/8 1/8
Safety devices Temperature and pressure relief valve Setting °C Thermal cutout (on indoor unit): 87-95°C Thermal cutout (on indoor unit): 87-95°C Thermal cutout (on indoor unit): 87-95°C
Control systems Class of temperature control   II II II
  Contribution to seasonal space heating efficiency % 2 2 2
General Supplier/Manufacturer details Name and address   ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Gueglingen ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Gueglingen ROTEX Heating Systems GmbH , Langwiesenstr. 10 ,74363 Gueglingen
    Name or trademark   ROTEX ROTEX ROTEX
  Product description Condensing boiler   Yes Yes Yes
    Low-temperature boiler   No No No
    B1 boiler   No No No
    Cogeneration space heater   No No No
    Combination heater   No No No
  LW(A) Sound power level (according to EN14825) Indoor dB(A) 56 55 54
Space heating General Prated kW 22 26 37
    P1 (Usefull heat output at 30% of rated heat output and low-temp regime) kW 7.2 8.7 12.1
    P4 (Useful heat output at rated heat output and high-temp regime) kW 21.6 26.2 36.5
    Ƞs (Seasonal space heating efficiency) % 91 91 91
    Ƞ1 (Useful efficiency at 30% of rated heat output and low-temp regime) % 96.1 96.7 96.3
    Ƞ4 (Useful efficiency at rated heat output and high-temp regime) % 86.9 87.2 87.2
    Seasonal space heating eff. class   A A A
    Qhe Annual energy consumption (final energy) kWh 11,499 13,990 19,713
    Qhe Annual energy consumption (GCV) Gj 41.4 50.37 71
  Auxiliary electricity consumption elmax (at full load) kW 0.036 0.056 0.062
    elmin (at part load) kW 0.018 0.02 0.024
    Psb (Standby mode) kW 0.004 0.004 0.004
  Other NOx emission mg/kWh 38.3 40.17 43.61
    Ƞson (seasonal space heating energy eff. in active mode) % 94.69 95.275 94.94
    Pstby (standby heat loss) kW 0.045 0.057 0.051
Power supply Phase   1~ 1~ 1~
  Frequency Hz 50 50 50
  Voltage V 230 230 230
  Voltage range Min. % 85 85 85
    Max. % 110 110 110
Class IP   IPX4D IPX4D IPX4D
  3-way valve IP   IP44 IP44 IP44
Electrical power consumption Max. W 110 110 110
  Standby W 4 4 4
  3-way valve Max. W 3 3 3
Current Fuse Size A 2 2 2
    Phase   1~ 1~ 1~
    Pole   1 1 1
Sensor Storage tank sensor   NTC NTC NTC
  Return temperature sensor   NTC NTC NTC
  Feed temperature sensor   NTC NTC NTC
  Ambient temperature sensor   NTC NTC NTC