Download WarmFlow COMBI 70 Technical information

2 - BOILER TECHNICAL INFORMATION
2.1
Boiler technical data
Model
Boiler water content
* Weight (dry)
Max. heat input (Kerosene)
Combi 70
Combi 90
litre
80
40
gal
17.6
8.8
kg
158
158
lb
348
348
kW
22.0
27.6
75 000
94 200
Btu/h
Connections:
Heating flow and return
Flow - 22 mm copper pipe, Return - 1" BSP
Cold water mains inlet
15 mm copper pipe
Domestic hot water outlet
15 mm copper pipe
Pressure relief valve discharge
15 mm copper pipe
Flue size (conventional)
100 mm (4 in) diameter
Waterside resistance Flow/Return temp. diff. of 10°C
26.5 mbar
Waterside resistance Flow/Return temp. diff.of 20°C
9.5 mbar
Boiler thermostat range
75 to 85°C
Limit (safety) thermostat switch off temp.
111°C ± 3°C
Maximum heating system pressure (cold)
1.0 bar
Minimum heating system pressure (cold)
0.5 bar
Pressure relief valve
2.5 bar
Expansion vessel
12 litres (pre-charged at 1.0 bar)
Maximum heating system volume
77 litres
Maximum operating pressure
117 litres
2.5 bar
Minimum domestic hot water flow rate
3.0 litres/min (0.66 gal/min)
Maximum domestic hot water temperature
65°C (factory set)
Maximum mains water inlet pressure
8.0 bar
Minimum recommended mains water inlet pressure
2.5 bar
Max. hearth temperature
Electricity supply
Less than 50°C
230/240 V ~ 50 Hz Fused at 5 Amp
Motor power
90 W max.
Starting current
2.60 Amp
Running current
0.85 Amp
Oil connection
Conventional flue
¼" BSP Male (on end of flexible fuel line)
Minimum flue draught - 8.7 N/m² (0.035 in wg)
Maximum flue draught - 37 N/m² (0.15 in wg)
* Weight includes burner but excludes flue
6
Combi 70 & Combi 90 Oil Boilers