Combustion Control; Maintenance - Joannes AZ 4 Bedienungsanleitung

COMBUSTION CONTROL

In order to obtain the best combustion performance and efficiency, and for respect of the envi-
ronment, checksand adjustment of the combustion must be carried out, and with appropriate
tools.Basic values to be considered are:
—CO2 indicates the amount of excess air during combustion; if air is increased, CO2 % value-
sdecrease, and if combustion air is decreased, CO2 % values increase.
—SMOKE SCALE (Bacharach) indicates that solid un-burnt particles are present in the smo-
ke. If N°2 on the BH scale is exceeded the nozzle must be checked for faults and that it is
adapt to the burnerand boiler (trade, type, pulverization angle).Usually the BH scale number
tends to decrease, increasing pump pressure, in this case keep theincreasing combustion
levels under control.
—SMOKE TEMPERATURE is a level which indicates heat loss through the chimney; higher
thetemperature, greater is the loss and lower combustion efficiency. If the temperature is too
high thequantity of burned light oil needs to be lowered.
IMPORTANT: existing laws in some countries can require a different adjustment to that given
here and may alsohave different parameters. ECO burners are designed to meet the toughest
international laws on energy savingand respect of the environment.

MAINTENANCE

Most components can be checked by removing the cover. For head inspection, the compo-
nent plate must be dismounted which can be hung on the burner body in 2 positions to allow
intervention in the most rationable way. The motor, transformer and electromagnetic valve
are electronically connected to plug/socket, thephotoresistance is inserted under pressure.
ATTENTION:ensure unit is unplugged before removing cover.
Fig. A
By removing the cover, access is gained
to:condensor-motor, control box, transfor-
mer photoresistance, pump, electroma-
UK
gnetic valve.
32
By unscrewing the plate fixing pin the burner
can be opened allowing
access to the fan, nozzle, electrodes and
Fig. B
preheater..