41
9. Ensure the automatic air vent on the
condensing heat exchanger is open.
10. Check that all fuel line valves are open.
11. Remove the plastic burner cover if it
was not previously removed.
12. Connect a combined vent manifold
and pressure gauge to the pressure
gauge connection port on the oil
pump. See Figure 3-6. Open the
vent screw on the vent manifold to
vent the supply while the pump is
running.
13. Set the boiler On/Off switch to Off
(Kitchen/Utility models only). Check
that all system controls are calling for
heat and turn the boiler thermostat
to maximum.
10.2 Switching On
1. Switch on the electricity supply.
2. Set the boiler On/Off switch to ON
(Kitchen/Utility models only). A neon
in the switch lights when it is in the
ON position.
The boiler will now light automatically.
Note that the neon lights when the boiler
is switched on, but does not necessarily
indicate the burner is firing.
Boiler House models will start as
soon as the electricity supply to the
boiler is switched on.
3. Set the boiler On/Off switch to On
(Kitchen/Utility models only).
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.
4. With the burner alight, check the fuel
pressure.
5. Refer to the Technical Information,
Section 2.3.
6. Adjust the pressure if necessary - see
Figure 3-6. Note that the 'Mains On'
neon lights when the boiler is switched
on (Kitchen/Utility models only), but
does not necessarily indicate the burner
is firing. It merely indicates that the
power is connected.
Commissioning
It is important that the oil pressure is
correctly set.
7. Operate the boiler until it reaches
normal operating temperature.
Check oil supply/return pipe for
leaks, rectifying where necessary.
8. Check the operation of the boiler
thermostat. Ensure that by turning it
anticlockwise it switches the burner
off.
9. With the burner alight, re-check
the fuel pressure and re-adjust
if necessary. Turn the boiler off,
remove the pressure gauge and
replace the plug in the pump.
10. Ensure that there are no oil leaks,
replace the burner cover. Ensure the
flexible air tube is connected to both
the burner and flue system (balanced
flue models).
10.3 Running the Boiler
1. Relight the boiler and allow it to run
for at least 20 minutes.
2. Check the smoke number, if
satisfactory check the CO
2
. Set the
CO
2
to the value given in Section 2.3
for the boiler concerned.
3. Use the hexagonal key supplied to
adjust the burner air damper (see
Figure 3-6) as required. Turning the
screw anti-clockwise closes the
damper and increases CO
2
level,
turning the screw clockwise opens
the damper and reduces CO
2
level.
4. Re-check the smoke number if the
damper has been moved. Under
no circumstances must the smoke
number be above 1.
It is important that the air damper is
correctly set.
5. Check the flue gas temperature by
placing the combustion analyser in
the low level flue terminal (or into
the test point on the starter elbow if
either the Green system or Hybrid
system is used).
10.4 Balancing the System
1. When the boiler has been adjusted
and is running satisfactorily, balance
the central heating system by
adjusting the radiator lock shield
valves. Start with the radiator nearest
the boiler and adjust the valves to
achieve the required temperature
drop across each radiator. If
thermostatic radiator valves have
been installed, check the system by-
pass.
2. Switch off the boiler.
10.5 Completion
1. With the system hot, check again for
leaks, rectifying where necessary.
Drain the system while it is hot to
complete the flushing process. Refill
and vent (and pressurise if a sealed
system) the system.
2. A suitable central heating system
inhibitor must be added to protect
the system against the effect of
corrosion.
3. Consideration should be given to
using a suitable antifreeze to prevent
damage to the boiler installed in
garages, out houses, etc. in areas
where electrical power failure can
occur in winter months.
4. Replace the top, front and rear
panels as necessary.
After commissioning the boiler
complete the Commissioning
Report in the front of this
manual and the OFTEC Cd/11
commissioning report. Leave the
top copy with the User and retain
the carbon copy.
If the boiler is to be left in service
with the User, set the controls, timer
(If optional programmer is fitted, see
instructions supplied in kit) and room
thermostat (if fitted) to the User's
requirements.
If the boiler is not to be handed over
immediately, close the boiler fuel supply
valve and switch off the electricity
supply.
NOTE
!
NOTE
!
NOTE
!
