34
Grant Vortex Oil Boilers
Refer to Fig. 23 for boiler controls
It is important that the following commissioning
procedure is carried out to ensure safe and efficient
operation of the boiler.
Note: Check that the baffles are in position and
that the cleaning cover is correctly fitted and a
good seal made.
IMPORTANT:
Check that the turbulators are in position and that
the ends are vertical (see Fig. 26).
Note: If the 15/26 models are down rated to 20 or
15 kW, the burner head must be changed to a T1
head. See Section 3.3.
1 Check that the water system has been vented (and
pressurised if sealed system) and there are no leaks.
Ensure the automatic air vent on the condensing
heat exchanger is open.
2 Check that all fuel line valves are open.
3 Remove the plastic burner cover if it was not
previously removed.
4 Connect a combined vent manifold and pressure
gauge to the pressure gauge connection port on the oil
pump. See Fig. 7. Open the vent screw on your vent
manifold to vent the supply while the pump is running.
5 Set the boiler On/Off switch to Off. Check that all
system controls are calling for heat and turn the
boiler thermostat to maximum. Switch on the
electricity supply.
6 Set the boiler On/Off switch to On. The burner fan
should start and the burner should light within
about 12 seconds. If the burner does not light and
the 'Lock-out' reset button lights, wait for about 45
seconds then press the reset button to restart the
ignition process. This procedure may have to be
repeated several times during first lighting.
7 With the burner alight, check the fuel pressure.
Refer to the Technical Information, Section 3.3.
Adjust the pressure if necessary - see Fig. 7. Note
that the 'Mains On' neon lights when the boiler is
switched on, but does not necessarily indicate the
burner is firing.
8 Operate the boiler until it reaches normal operating
temperature. Check oil supply/return pipe for leaks,
rectifying where necessary.
9 Check the operation of the boiler thermostat.
Ensure that by turning it anticlockwise it switches
the burner off.
6 - COMMISSIONING
Fig. 23 - (Kitchen model shown)
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