Section 2: Technical Data
Page 9
2.3 Sealed System Data
Table 2-2:
Sealed system data
15/21 and 21/26kW
Heating system pressure (cold)
Maximum 1.0 Minimum 0.5 bar
Operating pressure of pressure relief valve
2.5 bar
Expansion vessel size (pre-charged at 1 bar)
To be selected based on the water content of the system
Cold water mains connection *
15 mm copper pipe
Pressure relief valve discharge connection *
15 mm copper pipe
* Provided that a Grant UK sealed system kit (listed in Table 1-4) has been used
2.4 Burner Settings
Table 2-3:
Burner settings
Hybrid model
(burner type)
Heat output
Nozzle
Oil
pressure
(bar)
Smoke
No.
Burner
head type
Burner
head/disc
setting
Fuel
flow rate
(kg/h)
Flue gas
temp.
(°C)
CO
2
(%)
(kW)
(Btu/h)
HPIDAIR
15/21kW
(RDB2.2 BG1 BLU)
* 21 *
71 650
0.60/80°ES
8.5
0 - 1
BG1
N/A
1.78
55 - 85
12.0
15
51 200
0.40/80°ES
9.0
0 - 1
BG1
Disc
setting B
1.28
45 - 75
12.0
16
54 600
0.40/80°ES
10.5
0 - 1
BG1
Disc
setting B
1.36
45 - 75
12.0
18
61 400
0.55/80°ES
8
0 - 1
BG1
N/A
1.53
50 - 80
12.0
HPIDAIR2
21/26kW
(RDB2.2 BG3 BLU)
* 26 *
88 700
0.65/80°ES
10
0 - 1
BG2
N/A
2.19
55 - 75
12.0
21
71 650
0.60/80°ES
8.5
0 - 1
BG2
N/A
1.78
45 - 65
12.0
23
78 475
0.65/80°ES
8.5
0 - 1
BG2
N/A
1.94
50 - 70
12.0
Notes:
1.
The data given above is approximate only.
2.
The above settings may have to be adjusted on site for the correct operation of the burner.
3.
Gas Oil and Bio Kerosene are NOT suitable for use with the Grant HybridAir
4.
The flue gas temperatures given above are ± 10%.
5.
When commissioning, the air damper
must be
adjusted to obtain the correct CO
2
level.
6.
* Factory settings: 15/21 - 21kW, 21/26 - 26kW
7.
The installer must amend the boiler data label if the output is changed.
2.5 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 CO2 and smoke readings only.
•
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.
Summary of Contents for Aerona3 Series
Page 57: ...Section 13 Flue System and Air Supply Page 57 Figure 13 8 Flue clearances...
Page 77: ...Section 19 Spare Parts Page 77 Figure 19 4 15 21kW baffles Figure 19 5 21 26kW baffles...
Page 84: ...Appendix A Page 84 Appendix A...
Page 85: ...Appendix A Page 85...
Page 86: ...Appendix A Page 86...
Page 87: ...Appendix A Page 87...
