Benchmark Procombi A Series User Manual

4
SECTION 2 TECHNICAL DATA
2.1 Central Heating A28 A32 A36
Heat input (kW) 20 25 30
Maximum heat output (kW) 60/80°C 19.6 24.45 29.31
Minimum heat output (kW) 60/80°C 5.9 6.9 6.84
Maximum heat output (kW) 30/50°C 21.00 26.30 31.83
Minimum heat output (kW) 30/50°C 6.40 7.47 7.41
Minimum working pressure 0.5 bar
Maximum working pressure 2.7 bar
Minimum flow rate 350 l/h
2.2 Domestic Hot Water A28 A32 A36
Heat input (kW) 28 32 36
Flow Rate: ∆T35
o
C 11.5 l/pm 13.1 l/pm 14.7 l/pm
Maximum inlet pressure 6.0 bar
Minimum inlet pressure 0.15 bar
Minimum flow rate 2.0 l/min
2.3 Gas Pressures A28 A32 A36
Inlet pressure (G20) 20.0 mbar
Heating maximum gas rate (m
3
/hr) 2.12 2.64 3.17
DHW maximum gas rate (m
3
/hr) 2.96 3.38 3.81
Minimum gas rate (m
3
/hr) 0.63 0.74 0.74
Injector size (mm) 6.7 6.7 7.0
2.4 Expansion Vessel A28 A32 A36
Capacity 8-litres 10-litres 10-litres
Maximum system volume 76-litres 91-litres 91-litres
Pre-charge pressure 1.0 bar
2.5 Dimensions A28 A32 A36
Height (mm) 780 780 780
Width (mm) 400 450 450
Depth (mm) 358 358 358
Dry weight (kg) 40 43 45
2.6 Clearances PROCOMBI A Range
Sides 12mm
Top 150mm from casing or 25mm above flue elbow (whichever is applicable)
Bottom 150mm
Front 600mm
2.7 Connections PROCOMBI A Range
Flow & return 22mm
Gas 15mm
DHW hot & cold 15mm
Safety valve 15mm
Condense 21mm
2.8 Electrical A28 A32 A36
Power consumption (Watts) 150W 150W 150W
Voltage (V/Hz) 230/50
Internal fuse 3.15A T (for PCB) - 3.15A F (for connections block)
External fuse 3A
2.9 Flue Details (concentric) A28 A32 A36
Maximum horizontal flue length (60/100mm) 7.8m 7.8m 7.8m
Maximum vertical flue length (60/100mm) 8.8m 8.8m 8.8m
Maximum horizontal flue length (80/125mm) 20m 20m 20m
Maximum vertical flue length (80/125mm) 25m 25m 25m
2.9A Flue Details (twin pipes) A28 A32 A36
Maximum horizontal flue length (80mm/80mm) 40m/40m 35m/35m 35m/35m
Maximum vertical flue length (80mm/80mm) 40m/40m 35m/35m 35m/35m
2.10 Efficiency A28 A32 A36
SEDBUK (%) 90.3 90.2 90.1
2.11 Emissions A28 A32 A36
CO
2
@ maximum output (%) 9.0 9.0 9.0
CO
2
@ minimum output (%) 9.0 9.0 9.0
CO/CO
2
ratio @ maximum output 0.002 to 1 0.002 to 1 0.002 to 1
CO/CO
2
ratio @ minimum output 0.0004 to 1 0.0004 to 1 0.0004 to 1
CO @ maximum output (mg/kWh) 182.8 215.0 215.0
CO @ minimum output (mg/kWh) 53.8 32.3 32.3
NOx @ maximum output mg/kWh) 105.9 105.9 88.3
NOx @ minimum output (mg/kWh) 61.8 61.8 70.6
NOx rating class 5 class 5 class 5

Benchmark Procombi A Series Specifications

General

Brand	Benchmark
Model	Procombi A Series
Category	Boiler
Language	English