40
Grant Vortex Eco Utility Oil Boilers
9 - BOILER SERVICING
6 With the fuel supply valve closed, clean/replace the
filter element and clean the filter bowl.
7 Flexible fuel supply hoses should be inspected annually
when the boiler is serviced and braided hoses replaced
every year. If in doubt replace the hoses
Warning: Before servicing, set the boiler On/Off
switch to Off, isolate the electricity supply and close
the fuel supply valve. Allow the boiler to cool.
The data label on the inside of the case side panel will
indicate the fuel used and the nozzle fitted.
1 Pull the front panel forward at the top to disengage
the fixing clips then lift it up and off the boiler.
2 If a sealed system kit is fitted, carefully lift up and
remove the expansion vessel from the front of the
boiler. Place the vessel on the floor taking care not
to strain the flexible pipe.
3 Disconnect the flexible air tube from the burner.
4 Remove the burner fixing nut (top of mounting
flange) and withdraw the burner.
If required, disconnect the flexible oil hose(s), use
a suitable container to prevent any oil spillage.
Note: If two flexible hoses are connected to the
burner, identify (mark if necessary) which is the
inlet and return if they are to be disconnected.
1 Remove the nuts and washers securing the front
cleaning door and withdraw the door. Take care - it
is heavy.
2 Remove the baffles as shown in Fig. 23.
3 Remove all deposits from the baffle plates and all
the boiler internal surfaces using a stiff brush and
scraper if necessary.
4 Check the condition of the flue, clean as necessary.
5 Check the condition of the front cleaning door seal,
replace if necessary.
6 Replace the baffles, ensuring they are correctly
fitted. See Fig. 23.
7 Pull out the spiral turbulators from the heat
exchanger tubes. See Fig. 24.
Clean the turbulators using a stiff brush
Test the heat exchanger condensate drain by pouring
water into one of the lower tubes and observe whether
the water discharges from the 22 mm condensate
outlet. Replace the turbulators.
Fig. 23 - Baffles
Dismantling prior to servicing
9.2
Cleaning the boiler
9.3
8 Replace the front cleaning door, ensuring the seal
is in good condition and secure it in position with
the nuts and washers previously removed. Tighten
to form a seal.
9 Remove the condensate trap and check that it is not
blocked and is operating correctly, i.e. the float is
free to move. Clean the trap and float as required.
10 Check that the boiler condensate outlet is
unobstructed. Clean if necessary.
IMPORTANT: The condensate trap and condensate
outlet must be checked on every service and cleaned as
necessary.
2
1
3
4
5
Turbulators
IMPORTANT:
The ends of the
turbulators must
be vertical
Position in vertical plane
Fig. 24 - Turbulators
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