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2.2
BURnER SEttinGS
! nOtE !
Burners are supplied factory set at the outputs shown.
When commissioning, the air damper must be adjusted to
obtain the correct CO
level and the installer must amend
2
the data label.
table 2-2: Burner settings
Boiler
heat output
models
(burner
(kW)
(Btu/h)
type)
Combi XS 26
(Riello
26.0
88,700
RDB2.2 BX
VC26)
Combi 21
(Riello
21.0
71,600
RDB2.2 BX
E15/21)
Combi 26
(Riello
26.0
88,700
RDB2.2 BX
VC26)
Combi 36
(Riello
36.0
122,800
RDB2.2 BX
VC36)
Notes:
†
Refer to Section 10.2 (Burner Settings: RDB2.2 BX burners)
‡
Flue gas VFR: Flue gas volumetric flow rate
1.
The data given above is approximate only and 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 Grant Vortex boiler range
4.
The flue gas temperatures given above are ± 10%.
5.
When commissioning, the air damper must be adjusted to obtain the correct CO
6.
The combustion door test point may be used for CO
2.3
fLUE GaS anaLYSiS
To allow the boiler to be commissioned and serviced, the boiler is supplied with a combustion test point on the front cleaning door.
When this test point is used please note the following:
•
The test point is for CO
2
•
The boiler efficiency and temperature must be taken from the flue test point on high level, vertical and conventional flue adaptors.
•
Concentric low level flues do not contain a test point. The temperature and efficiency readings must be taken from the flue terminal.
Section 2: technical Data
Oil
Smoke
nozzle
pressure
(bar)
0.75/60°EH
8.5
0 - 1
0.60/60°EH
8.0
0 - 1
0.75/60°EH
8.5
0 - 1
1.00/60°ES
9.0
0 - 1
and smoke readings only. Do not use this test point for temperature or efficiency readings.
2
and smoke readings only.
Burner
Distance †
Burner
head/
head
no.
air disc
a
type
setting
BX 500
N/A
-
BX 500
Disc: C
-
BX 500
N/A
-
BX 700
N/A
-
level.
2
fuel
flue gas
flow rate
temp.
D
(kg/h)
(°C)
2.19
75 - 80
15
1.84
75 - 80
13
2.16
75 - 80
15
2.99
75 - 80
17.5
flue
CO
gas
2
(%)
VfR ‡
(m³/hr)
12.5
28.5
12.5
23.0
12.5
28.5
12.5
39.5
page 7
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