Potterton Sirius Three WH-50, Installation, Operation & Maintenance Manual

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91.7.1 - GB/IE InstructIons pErtaInInG to thE InstaLLEr
24. tecHnical data
Boiler model Wh Wh 50 Wh 0 Wh 70
category II
hp
II
hp
II
hp
Nominal heat input (net/gross) kW 46,4 - 51,5 56,7 - 62,9 67,0 - 74,4
Reduced heat input (net/gross) kW 15 - 16,6 16,0 - 17,8 20,0 - 22,2
Rated heat output 75/60°C kW 45,0 55,0 65,0
- kcal/h 38.700 47.300 55.900
Rated heat output 50/30°C kW 48,7 59,5 70,3
- kcal/h 41.880 51.170 60.460
Reduced heat output 75/60°C kW 14,5 15,5 19,3
- kcal/h 12.470 13.330 15.820
Reduced heat output 50/30°C kW 15,8 16,8 21,0
- kcal/h 13.588 14.450 18.060
Useful efficiency according to 92/42/CEE directive — ★★★★ ★★★★ ★★★★
Useful efficiency max heat output 75/60 °C net/gross % 97,3 / 87,3 97,4 / 87,4 97,4 / 87,4
Useful efficiency max heat output 50/30 °C net/gross % 105,1 / 94,5 105 / 94,5 105,2 / 94,5
Useful efficiency 30% heat output % 107,6 107,5 107,6
Central heating system max. pressure bar 4 4 4
Heating circuit temperature range °C 25÷80 25÷80 25÷80
Type — C13 - C33 - C43 - C53 - C63 - C83 - B23
Concentric flue duct diameter mm 80 80 80
Concentric air duct diameter mm 125 125 125
Twin-pipe flue duct diameter mm 80 80 80
Twin-pipe air duct diameter mm 80 80 80
Max. flue mass flow rate kg/s 0,022 0,027 0,032
Min. flue mass flow rate kg/s 0,007 0,008 0,010
Max. flue temperature °C 74 78 75
NOx class — 5 5 5
NOx mg/kWh 38,4 33,9 37,7
Type of gas used — G20 G20 G20
— G31 G31 G31
Natural gas pressure 2H mbar 20 20 20
Propane gas pressure 3P mbar 37 37 37
Gas Consumption (NG) m 3 /hr 4,91 6,00 7,08
Gas Consumption (LPG) m
3
/hr 1,89 2,31 2,74
Minimum Operating Pressure Bar 1 1 1
High Level Ventilation to BS6644 boiler room cm
2
92,8 113,4 134
Low Level Ventilation to BS6644 boiler room cm 2 185,6 226,8 268
Water Flow at 20°C
∆
t lit/sec 0,54 0,66 0,78
Hydraulic Resistance at 20°C
∆
t kPa 11,7 17,6 20,6
Cold Feed Size to BS6644 mm 19 19 25
Safety valve size to BS6644 (open vent system) mm 19 19 19
Water Content lit 5,1 5,6 6,5
Maximum Flow Temperature °C 85 85 85
Ventilation to BS5440 cm
2
Power supply voltage V 230 230 230
Power supply frequency Hz 50 50 50
Rated power supply W 75 80 125
Net weight kg 64 68 72
Dimensions height mm 950 950 950
width mm 600 600 600
depth mm 466 466 466
Protection-limit against humidity and water leakages (**) IPX5D IPX5D IPX5D
(**) according to EN 60529