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4.6
Test boiler
The firing rate was set in relation to special test boilers in accord-
ance with the methods defined in EN 267 standards.
Fig. 3 indicates the diameter and length of the test combustion
chamber.
4.7
Burner description
1
Ignition electrodes
2
Combustion head
3
Screw for combustion head adjustment
4
Photocell for flame presence control
5
Screw for fixing fan to flange
6
Slide bars for opening the burner and inspecting the com-
bustion head
7
Valve assembly
8
Pump
9
Plate prearranged to drill 4 holes for the passage of hoses
and electrical cables.
10 Air inlet to fan
11 Fan pressure test point
12 Boiler mounting flange
13 Flame stability disk
14 Flame inspection window
15 Extensions for slide bars 6)
16 Motor capacitor
17 Control box with lockout pilot light and lockout reset button
18 Socket for electrical connections
19 Air damper
20 Pump pressure adjustment
21 Plate prearranged to drill 2 holes for the passage of hoses.
Two types of burner failure may occur:
Control box lockout:
if the control box 17)(Fig. 4) pushbutton (red led) lights up, it indi-
cates that the burner is in lockout.
To reset, hold the pushbutton down for between 1 and 3 seconds.
Technical description of the burner
11
GB
Example Output 35 kg/hour:
diameter = 50 cm; length = 1.5 m.
Whenever the burner is operated in a much smaller commercial-
ly-available combustion chamber, a preliminary test should be
performed.
7
6
8
15
5
17
4
16
21
D8618
19
D454
Fig. 3
2
11
12
10
3
14
20
18
9
1
13
Fig. 4
6426
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