elco VG 1.105 D E - Maintenance; Maintenance work on the burner

09/2018 - Art. Nr. 4200 1092 1400A30
Service
Maintenance
Burner and boiler servicing must only
be carried out by a trained heating
specialist. The system operator is
advised to take out a service contract
to guarantee regular servicing.
Please observe the following points:
• Disconnect the electrical supply and
close the gas shut-off valve before
carrying out any maintenance or
cleaning work.
Checking the exhaust gas
temperature
• Check the flue gas temperature at
regular intervals.
• Clean the boiler if the flue gas
temperature is more than 30°C above
the value measured at the time of
commissioning.
• To simplify the check, use a flue gas
temperature indicator.
Burner maintenance positions
After removing the screws 5, the
equipment plate can be hung in the
maintenance positions.
Gas head disassembly
• Remove lock nut C of the pipe bracket,
screw in dome nut E
• Pull out gas pipe to the right and
downwards
• Undo ignition and ionisation cables.
• When refitting, make sure that the
cable is routed correctly and that
O-rings J1 and J2 are correctly
seated.
Maintenance work on the burner
• Check gas supply components (tubes,
lines) and their connections for leaks
or signs of wear, replace if necessary.
• Check electrical connections and
connection cables for damage,
replace if necessary.
• Check gas filter, clean or replace as
necessary.
• Clean blower wheel and housing and
check for damage.
• Check and clean the mixing unit.
• Check ignition electrodes block,
readjust or replace as necessary.
• Start burner, check flue gas data,
correct burner settings if necessary.
• Check the setting for air pressure
switch and gas pressostat.
• Check the gas train controllability.
• Carry out an operating check
Blower wheel assembly
Observe the positioning diagram below
when replacing the motor and blower
wheel. The inside flange A of the blower
wheel must be fitted at the same level as
the equipment plate B. Insert a straight
edge between the wing of the blower
wheel and set A and B to the same
height, tighten the set screw on the
blower wheel (maintenance position 2).