20014622
14
GB
5.
WARNINGS TO AVOID BURNOUT OR BAD COMBUSTION OF THE BURNER
1
–
When the burner is stopped, the smoke pipe must be opened and effect a natural draught in the
combustion chamber. If the smoke pipe is closed, the burner must be drawn back till the extraction
of blast tube from the furnace. Before operating in this way take the voltage off.
2
–
The place, where the burner works, must have same openings suitable for the passage of air
necessary for combustion. To be sure about this, you have to control CO2 and CO in the exhaust
gases with all the windows and doors closed.
3
–
If in the place, where the burner works, there are air-breathings, check the existence of air-input
openings with dimensions suitable for the necessary air-exchange. In any case check that, when
the burner is stopped, the air-breathings do not draw warm smokes from pipes through the burner.
6.
MAINTENANCE
The burner requires periodic maintenance carried out by a qualified and authorised technician
in conformity
with legislation and local standards
.
Maintenance is essential for the reliability of the burner, avoiding the excessive consumption of fuel and
consequent pollution.
Before carrying out any cleaning or control always first switch off the electrical supply to the
burner acting on the main switch of the system.
THE BASIC CHECKS ARE:
Leave the burner working without interruption for 10 min., checking the right settings of all the components
stated in this manual. Then carry out a combustion check verifying:
CO
2
( %) content
Smoke temperature at the chimney
CO content (ppm).
7.
FAULTS / SOLUTIONS
Here below you can find some causes and the possible solutions for some problems that could cause a fail-
ure to start or a bad working of the burner. A fault usually makes the lock-out lamp light which is situated
inside the reset button of the control box (9, fig. 1, page 1).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if the
burner functions correctly, the lock-out can be attributed to a temporary fault.
If however the lock out continues the cause must be determined and the solution found.
BURNER STARTING DIFFICULTIES
Signal
Problem
Possible cause
Recommended remedy
2 blinks
Once the pre-purging
phase and safety time
have passed, the
burner goes into lock-
out without the appear-
ance of the flame
1
- The operation solenoid lets little gas . . . .
through
Increase
2
- One of the two solenoid valves does . . .
not open.
Replace
3
- Gas pressure too low. . . . . . . . . . . . . . . . Increase pressure at governor
4
- Ignition electrode incorrectly adjusted . . . Adjust, see page 4
5
- Electrode grounded due to broken . . . . .
insulation
Replace
6
- High voltage cable defective . . . . . . . . . . Replace
7
- High voltage cable deformed by high . . .
temperature
Replace and protect
8
- Ignition transformer defective . . . . . . . . . Replace
9
- Incorrect valve or transformer . . . . . . . . .
electrical wiring
Check
10 - Defective control box . . . . . . . . . . . . . . . . Replace
11 - A closed valve upline the gas train . . . . . Open
12 - Air in pipework . . . . . . . . . . . . . . . . . . . . . Bleed air
13 - Gas valves unconnected or with . . . . . . .
interrupted coil
Check connections or replace coil
