Burner Start-Up Cycle; Air Pressure Switch; Maintenance - Riello Burners Gulliver BS2D Type 916 T1 Montage Und Bedienungs Anleitung

IONIZATION CURRENT
The minimum current necessary for the control box operation is 5 µA.
The burner normally supplies a higher current value, so that no check is needed.
Anyway, if you want to measure the ioni-
zation current, you have to open the con-
nector (C) (see electrical scheme page 6)
fitted on the wire and insert a microamme-
ter. (See fig. 11).

4.3 BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
First valve
First flame
Second valve
Second flame
Lock-out
A
Lock-out is indicated by a lamp on the control box (4, fig. 1, page 1).
When the flame-failure occurs during working, shut down takes place within one second.

4.4 AIR PRESSURE SWITCH

The air pressure switch is set after all other adjustments have been made.
Begin with the switch at the lowest setting.
With the burner working at the required output, adjust the dial clockwise,
increasing its value until the burner shuts down. Now reduce the value by one
set point, turning the dial anti-clockwise.
Check for reliable burner operation, if the burner shuts down, reduce the value
by a half set point.
ATTENTION:
To comply with the standard, the air pressure switch must operate when the CO value exceeds 1%
(10,000 ppm). To check this, insert a combustion analyser in the flue, slowly reduce the burner air set-
ting and verify that the burner shuts down by the action of the air pressure switch before the CO value
exceeds 1%.
5.

MAINTENANCE

Burner requires a periodic maintenance, which is essential for the reliability of the burner, avoiding the
excessive consumption of fuel and consequent pollution.
THE BASIC CHECKS ARE:
Leave the burner working without interruptions for 10 min. and checking the right 1 st and 2 nd stage settings
of all the components stated in this manual. Then carry out a combustion check verifying:
•
Content of CO ( % )
2
2315
40s min.
3s max.
•
Content of CO (ppm)
Fig. 11
Terminal block
of control-box
Lock-out, due to light failure
5 – 25s
•
Smoke temperature at the chimney.
9 GB
Connector
D5006
40s min.
3s max.
Probe
A
D5016
D5471