page no. 59 of 68
CPx Range Users, Installation & Servicing Instructions Doc Ref M201 issue 2.9 Nov 2018.
WARNING: Always switch off and disconnect
electricity supply and close the oil service
valve before carrying out any servicing work
or replacement of failed components.
We recommend that any adjustment or
conversion should to be conducted by a
competent person. It is in your own interests
and that of safety to ensure that this is
adhered to.
* A competent person such as an Oftec approved
Heater conversion between oil fuels will require a change
of burner nozzle, adjustment of burner pressure and
re-commissioning of the heater. (Refer to section 2.6 for
commissioning details.)
Ensure that the oil inlet pressure to the
heater does not exceed the maximum
pressure stated in the burner manual, and
that the oil line has been purged of the old oil.
3.3.1.1. Burner Nozzle Conversion
1. Remove the burner from the heater and hook the
burner to the flange.
2. Undo the fixing screws retaining the blast tube and
remove.
3. Remove the cables from the electrode assembly.
4. Undo the fixing screws retaining the diffuser disc holder
assembly from the nozzle holder assembly and remove.
5. Using appropriate spanners, hold the base of the nozzle
holder whilst un-doing and removing the original nozzle.
6. Fit replacement nozzle, again by holding the base of the
nozzle holder with a spanner whilst tightening nozzle.
7. Refit all other components in reverse order.
8. Check that fitted fire valves are open.
9. Refer to the burner instruction book and fit a pressure
gauge (and vent valve if the burner is on a single pipe oil
feed) to the oil pump.
10. Set the time clock and thermostat to call for heat or
complete the external control circuit.
11. Turn ON the main electrical supply, press the limit
reset switch if required and check that the burner fan
starts.
All burners used on the OUH range have oil pumps
that may be set to operate on 35sec (diesel) and 28sec
(kerosene).
Burner setting pressures are carried out by adjusting the
high and low burner pressures to the value in the tables
opposite.
Note*: Ensure the original data badge is
removed and replaced with new data badge
1. Ensure the oil gauge is connected. Remove the sample
point cover plug from the outlet flue length and insert a
CO2 measuring instrument.
2. Turn ON the main electricity supply and check that the
following sequence of events occur. i) Burner fan runs. ii)
Ignition spark is heard. iii) Main flame is established.
Low Fire
Pressure
Adjustment
High Fire
Pressure
Adjustment
Gauge
Connection
CPx30 to
CPx175 inc
