7
Combi 70 & Combi 90 Oil Boilers
Note: All boilers are despatched for use with Kerosene.
Notes:
1 The data given above is approximate only. The Kerosene table is based on the boiler being used with a low level balanced flue.
2 The above settings may have to be adjusted on site for the correct operation of the burner.
3 Gas Oil is not suitable for use with a low level balanced flue.
4 The installer must amend the boiler data label if the type of fuel and nozzle used are changed.
5 Net flue gas temperatures given are ± 10%.
6 ** Net thermal efficiency (BSRIA).
Flue gas mass
flow rate (kg/h)
34.8
38.7
CO
2
(%)
11.5
12.0
(kW)
20.5
26.4
(Btu/h)
70 000
90 000
Heat Output
(kW)
22.5
27.6
(Btu/h)
76 900
94 200
Net Heat Input
Net eff. **
(%)
93.0
95.8
Head
type
LD2SX short
LD3
Nozzle
size
0.60/60°EH
0.75/60°EH
Oil press.
(bar)
8.5
9.5
Smoke
No.
0 - 1
0 - 1
Fuel flow
rate (kg/h)
1.87
2.40
Net flue gas
temp. (°C)
211
180
Flue gas mass
flow rate (kg/h)
34.8
38.7
CO
2
(%)
11.5
12.0
(kW)
20.5
26.4
(Btu/h)
70 000
90 000
Heat Output
(kW)
22.5
27.9
(Btu/h)
76 900
95 250
Net Heat Input
Net eff. **
(%)
92.0
94.6
Head
type
LD2SX short
LD3
Nozzle
size
0.40/60°S
0.60/60°S
Oil press.
(bar)
12.0
12.0
Smoke
No.
0 - 1
0 - 1
Fuel flow
rate (kg/h)
1.60
1.97
Net flue gas
temp. (°C)
200
200
Note: Burners are supplied factory set at the above outputs.
When commissioning, or when the type of fuel is changed, the air damper must be adjusted to obtain the correct CO
2
level and the Installer must amend the data label.
2 - BOILER TECHNICAL INFORMATION
Combi 70 & 90 oil boilers using class C2 Kerosene
2.2
Combi 70 & 90 oil boilers using class D gas oil
2.3
Approximate air damper settings
2.4
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