Filter
Top Products
35
INSTRUCTIONS PERTAINING TO THE INSTALLER 926.772.1 - GB/IE
24. TECHNICAL DATA
Boiler model WH WH 46 WH 65
Category II2H3P II2H3P
Nominal heat input (net/gross) kW 46,4 - 51,5 67,0 - 74,4
Reduced heat input (net/gross) kW 15 - 16,6 20,0 - 22,2
Rated heat output 75/60°C
kW 45,0 65,0
kcal/h 38.700 55.900
Rated heat output 50/30°C
kW 48,7 70,3
kcal/h 41.880 60.460
Reduced heat output 75/60°C
kW 14,5 19,3
kcal/h 12.470 15.820
Reduced heat output 50/30°C
kW 15,8 21,0
kcal/h 13.588 18.060
Useful efciency according to 92/42/CEE directive —
★★★★ ★★★★
Useful efciency max heat output 75/60 °C net/gross % 97,3 / 87,3 97,4 / 87,4
Useful efciency max heat output 50/30 °C net/gross % 105,1 / 94,5 105,2 / 94,5
Useful efciency 30% heat output % 107,6 107,6
Central heating system max. pressure bar 4 4
Heating circuit temperature range °C 25÷80 25÷80
Type — C13 - C33 - C43 - C53 - C63 - C83 - B23
Concentric ue duct diameter mm 80 80
Concentric air duct diameter mm 125 125
Twin-pipe ue duct diameter mm 80 80
Twin-pipe air duct diameter mm 80 80
Max. ue mass ow rate kg/s 0,022 0,032
Min. ue mass ow rate kg/s 0,007 0,010
Max. ue temperature °C 74 75
NOx class — 5 5
NOx mg/kWh 38,4 37,7
Type of gas used — G20/G31 G20/G31
Natural gas pressure 2H mbar 20 20
Propane gas pressure 3P mbar 37 37
Gas Consumption (NG) m
3
/hr 4,91 7,08
Gas Consumption (LPG) m
3
/hr 1,89 2,74
Minimum Operating Pressure Bar 1 1
High Level Ventilation to BS6644 boiler room cm
2
92,8 134
Low Level Ventilation to BS6644 boiler room cm
2
185,6 268
Water Flow at 20°C ∆t lit/sec 0,54 0,78
Hydraulic Resistance at 20°C ∆t kPa 11,7 20,6
Cold Feed Size to BS6644 mm 19 25
Safety valve size to BS6644 (open vent system) mm 19 19
Water Content lit 5,1 6,5
Maximum Flow Temperature °C 85 85
Ventilation to BS5440 cm
2
Power supply voltage V 230 230
Power supply frequency Hz 50 50
Rated power supply W 75 125
Net weight kg 64 72
Dimensions height mm 950 950
width mm 600 600
depth mm 466 466
Protection-limit against humidity and water leakages (**) IPX5D IPX5D
(**) according to EN 60529