Burner Settings; Flue Gas Analysis; Boiler Dimensions - Grant Vortex Series Installation And Servicing Instructions

2.2

BURNER SETTINGS

Table 2-2: Burner settings
Boiler Heat output
models
(burner
(kW) (Btu/h)
type)
Outdoor
Combi 21
(Riello 21.0 71,600
RDB2.2 BX
E15/21)
Outdoor
Combi 26
26.0 88,700
(Riello
RDB2.2 BX
VC26)
Outdoor
Combi 36
36.0 122,800
(Riello
RDB2.2 BX
VC36)
Notes:
‡ 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%.
When commissioning, the air damper must be adjusted to obtain the correct CO
5.
6. The combustion door test point may be used for CO
7. When commissiong the Combi 21, the position of the air adjuster disc should be checked. Refer to Section 10.3 (Air Adjuster Disc).
8. Refer to Section 10.2 for information on how to set Distance D (Figure 10-5).
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.
2.4

BOILER DIMENSIONS

329
REAR VIEW
Figure 2-1: Vortex Pro Outdoor Combi Dimensions
Section 2: Technical Data
Oil
Smoke
Nozzle pressure
(bar)
0.60/60°ES 8.0 0 - 1
0.75/60°ES 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.
755
PLAN VIEW
75
27
Burner
Burner
head/ Distance
head
No. air disc D ⁸ (mm)
type
setting
BX 500 Disc: C
BX 500 N/A
BX 700 N/A
level.
2
75
33
516
LEFT SIDE VIEW
Fuel Flue gas
flow rate temp.
(kg/h) (°C)
13 1.84 75 - 80
15 2.16 75 - 80
17.5 2.99 75 - 80
755
Dashed lines
show footprint
of base
BASE VIEW
755
516
RIGHT SIDE VIEW
Flue
CO gas
2
(%) VFR ‡
(m³/hr)
12.5 23.0
12.5 28.5
12.5 39.5
27
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