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Condensing Boilers

Wall Type Condensing Boilers

WT-S Series
WT-S Series
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WT-S Series

  • High efficiency with Premix condensation technology and micro-flame metal fiber coated steel burner,
  • High resistance and performance with stainless steel heat exchanger,
  • 6 different capacity options (45, 55, 65, 100, 120 and 145 kW) in individual boilers and up to 2340 kW in CASCADE systems,
  • When used as Cascade, it provides connection and control opportunity for 16 boilers + 1 outdoor sensor + 1 mixing valve placed onto boiler,
  • Low energy consumption with the modulating primary circuit pump integrated to the boiler with capacities of 45-55-65 kW,
  • Energy saving through 5:1 modulating operation,
  • Illuminated LCD panel for ease of use,
  • Daily and weekly operation schedule can be programmed,
  • Seasonal heat programming during summer and winter times,
  • Option of use with Natural gas and LPG,
  • Combi operation at lower noise values,
  • Eco-friendly heating systems with low NOx and CO emission rates,
TECHNICAL SPECIFICATIONS Unit WT-S
45		 WT-S
55		 WT-S
65		 WT-S
100		 WT-S
120		 WT-S
145
Thermal Capacity
Maximum Heating Capacity kW 45 55 65 100 120 145
Minimum Heating Capacity kW 13 14 14,5 16 17 20
Maximum Heat Output (80°C / 60°C) kW 43,7 53,4 63,1 97 116,4 140,7
Minimum Heat Output (80°C / 60°C) kW 12,3 13,1 13,7 15,2 16,8 18,2
Maximum Heat Output (50°C / 30°C) kW 46,4 57,2 67,6 102,8 123,6 150,8
Minimum Heat Output (50°C / 30°C) kW 12,9 13,9 14,6 15,8 17,3 19,2
Thermal Efficiency
Efficiency @ Pmax. (80°C / 60°C) % 97,2 97,5 97,4 97,4 97,3 97,2
Efficiency @ Pmin. (80°C / 60°C) % 98,5 98,5 98,2 98,2 98,4 98,2
Efficiency @ Pmax. (50°C / 30°C) % 105,2 105,3 105,4 105,6 105,3 105,6
Efficiency @ Pmin. (50°C / 30°C) % 107,4 107,6 107,2 107,1 107,3 107,4
Efficiency @ %30 (30°C) % 108,7 109 108,2 108,6 108,4 108,7
Domestic Hot Water Circuit
Temperature adjustment range with external storage tank usage °C 10-65 10-65 10-65 10-65 10-65 10-65
Central Heating Circuit
Maximum Operating Temperature °C 90 90 90 90 90 90
Maximum Operating Pressure bar 6 6 6 6 6 6
Minimum Operating Pressure bar 1 1 1 1 1 1
Water Resistance ΔT = 20 °C  mbar 260 290 310 275 290 310
Gas Specifications
Gas Type - G20-G31 G20-G31 G20-G31 G20-G31 G20-G31 G20-G31
Gas Inlet Pressure (G20) mbar 20 20 20 20 20 20
Gas Inlet Pressure (G31) mbar 37 37 37 37 37 37
Maximum gas consumption Nm³/h 4,69 5,73 6,78 10,42 12,51 15,12
Minimum gas consumption Nm³/h 1,36 1,46 1,51 1,67 1,77 2,08
Combustion Specifications
Maximum Flue Gas Temperature (50°C / 30°C) °C 42 42 42 45 45 45
Maximum Flue Gas Temperature (80°C / 60°C) °C 65 65 65 65 65 65
NOx Emission Class (EN 15502-1+A1) - 6 6 6 6 6 6
Electrical Specifications
Electrical Supply V / Hz 230/50 230/50 230/50 230/50 230/50 230/50
Protection Class IP X4D X4D X4D X4D X4D X4D
Energy Consumption W 150 190 190 300 300 300
Fuse Current A 6 6 6 6 6 6
Circuit Specifications
Gas Connection Diameter inch 3/4" 3/4" 3/4" 3/4" 3/4" 3/4"
Central Heating Circuit Inlet/Outlet Diameter inch  1"  1"  1" 1 1/4" 1 1/4" 1 1/4"
General Specifications
Net Weight kg 60 63 68 72 87 84
Flue Diameter (Ø) mm 60/100 80/125 80/125 100/150 100/150 100/150
G20 Natural Gas , G 31 LPG
 MODEL W
(mm)		 H
(mm)		 D
(mm)
WT-S 45 465 800 465
WT-S 55 465 800 465
WT-S 65 465 800 465
WT-S 100 495 800 560
WT-S 120 495 800 630
WT-S 145 495 800 705

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