Enertech Bentone B 40 A2.2, Инструкция по установке и обслуживанию, Страница: 10 / 20

171 425 12 10-01
ELECTRIC EQUIPMENT
Function
1.
Switch on operating switch and twin thermostat
A spark is formed. The air damper motor opens the damper to low load
position. The burner motor starts, the prepurge goes on till the prepurge
period expires and the solenoid valve 1 opens (2)
2. Solenoid valve 1 opens
Oil mist is formed and ignited. The photocell indicates a lame.
(1) The ignition spark goes out 15 s. after lame indication (LOA24.171...
).
(2) The ignition spark goes out 2 s. after lame indication.when the ignition
transformer is connected to terminal 7
(LOA24.173...)
.
3. The safety time expires
a. If no lame is established before this time limit the control cuts out.
b. If for some reasons the lame disappears after this time limit, the
burner will make an attempt to re-start.
4. High/Low thermostat ON
The burner is in operating position and can now change between full
load and low load.
4-5. Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fulilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
Post-ignition
(2)
If a post-ignition of 15 s. is wanted, move the ignition transformer from
terminal 7 to terminal 6
(LOA24.173...)
.
Technical data
Pre-ignition time: 13 s
Pre-purge time: 13 s
(1)
Post-ignition time: 15 s
(2)
Post-ignition time: 2 s
Safety lock-out time: 10 s
Reset time after lockout:
≈
50 s
Reaction time on lame failure: max. 1 s
Ambient temperature: from - 20 to + 60°C
Min. current with lame established: 65 µ A
Max. photo current at start: 5 µ A
Enclosure: IP 40
(Under voltage proof only LOA24...)
Control of photo current
the current through photo unit is measured with a d.c. ammeter (a moving coil
instrument connected in series with the photo unit).
3(3)