Condensing Boilers

Hermetic Low NOx Water Heater

WT-S ONE HW Low NOx Water Heater

  • Domestic hot water up to maximum thermal capacity of 20 kW,
  • Operating with Natural gas and LPG,
  • DHW capacity up to a maximum of 8 LPM at Δt = 25 °C,
  • NOx emission Class 6 according to TS EN 15502 -1+ A1 standard and ErP,
  • Eco-friendly with low NOx and CO emission rates,
  • Smart combustion control and high combustion efficiency,
  • Provides Non - stop DHW demand with high thermal efficiency,
  • Simple control with illuminated LCD panel which provides ease of use,
  • Low space requirement with its aesthetic and compact design,
  • Maximum air and water soundness with hermetic case,
  • Temperature display on digital screen,
  • Stabilizing DHW temperature,
  • Hybrit usage with solar water heater etc.,
  • Protection against frost, overheating and voltage changes,
  • Working at lower noise levels,
  • Easy maintenance.
TECHNICAL SPECIFICATIONS Unit WT-S ONE HW 20 WT-S ONE HW 24 WT-S ONE HW 28 WT-S ONE HW 32 WT-S ONE HW 35
Nominal Heat Capacity (Max.) kW 23,3 27,2 31,3 35,2 38,1
Nominal Heat Power (Max.) kW 20 24 28 32 35
Heating Capacity (Min.) kW 10,6 12,7 14,8 17 18,6
Heating Power (Min.) kW 9,4 11,3 13,2 15 16,5
Thermal Efficiency % 85,8 88,2 89,5 90,9 91,9
DHW Flow Rate L/d 11,5 ( Δt = 25 °C) 13,8 ( Δt = 25 °C) 16,1 ( Δt = 25 °C) 18,4 ( Δt = 25 °C) 23 ( Δt = 25 °C)
Water Pressure (Min. - Max.) Bar 0,2 - 8 0,2 - 8 0,2 - 8 0,2 - 8 0,2 - 8
Gas Pressure (G20) mbar 20 20 20 20 20
Burner Operating Pressure (G20, Min - Max.) mbar 3 - 13 3,2 - 13,5 3,4 - 14 3,6 - 14,5 3,8 - 15
Flue Dimensions mm Ø 100 /60 Ø 100 /60 Ø 100 /60 Ø 100 /60 Ø 100 /60
Electrical Connection AC230V ~ 50 Hz AC230V ~ 50 Hz AC230V ~ 50 Hz AC230V ~ 50 Hz AC230V ~ 50 Hz
Electrical Power W 69 69 69 74 74
Noise Level (Indoor) dB 50 50 50 51 51
NOx Class (TS EN 15502-1+A1) 6 6 6 6 6
External Dimensions mm 645 X 320 X 260 645 X 320 X 260 645 X 320 X 260 645 X 320 X 260 645 X 320 X 260
Weight kg 15,8 15,8 15,8 15,8 15,8
 MODEL W
(mm)
H
(mm)
D
(mm)
WT-S ONE 20 HW 320 645 260
WT-S ONE 24 HW 320 645 260
WT-S ONE 28 HW 320 645 260
WT-S ONE 32 HW 320 645 260
WT-S ONE 35 HW 320 645 260