page no. 22 of 36
OUH
Range Users, Installation & Servicing Instructions Doc Ref M105 issue 5.8 Apr 2020.
Checks to ensure electrical safety must be carried out by
a qualified person.
.6.2. Oil Installation
This should be commissioned generally in accordance with
BS 5410 Part 2 Section 59 Paragraphs 59.1.1.1 to 59.1.1.6
The system should be checked to ensure that the
installation work has been carried out in accordance with
the design requirements.
Particular attention should be given to the correct
arrangement of delivery ducts and registers, return air
ducts and grills and general adequacy of return air paths.
For OUH/C and OUH/D units ensure that the duct work is
balanced so that the specified motor running currents are
achieved See section 1.2
This should generally be in accordance with BS 541 Part
2 Section 59.2.1.1 to 59.2.1.5 inclusive. In addition check
that:
a) Ensure that the ELECTRICAL supply to the heater is
switched OFF.
b) Check that all warm air delivery outlets are open.
c) Check that all external controls are calling for heat.
d) If an MC200 or MC300 is being used ensure that the
control is set to winter operation.
NOTE:
Refer also to the burner instruction booklet
supplied with the heater. This provides
information on how to adjust the burner,
system checks and fault finding detail.
IMPORTANT:
DO NOT use burner settings from the
burner instruction booklet. The burners are
specifically adjusted for Powrmatic heaters,
only use the settings in these instructions.
1.Check that fuel is present in the tank and at the oil filter
fitted on the front of the heater.
2. Check that fitted fire valves are open.
3. 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.
4. Set the time clock and thermostat to call for heat or
complete the external control circuit.
5. Turn ON the main electrical supply, press the limit reset
switch if required and check that the burner fan starts.
6. Note: This step is only for when a vent valve is being used.
Open the vent valve. When air free oil issues from the
vent valve close the valve and the burner will fire when
the ignition spark is present. (Note: This procedure may
need to be repeated several times if the oil line cannot be
purged of air within one ignition cycle. At the end of the
unsuccessful ignition cycle the burner will go to lockout.
Wait 2/3 minutes and then depress the red reset button
on the burner control box to restart the ignition cycle.)
7. After completion of the pre-purge period the ignition
spark will be energised and the burner oil solenoid valve
will open and the burner will light.
WARNING:
If burner ignition cannot be achieved after
2-3 attempts do not continue to recycle
through the ignition sequence but ascertain
the cause and rectify.
WARNING:
If continued unsuccessful ignition attempts
are made it is possible to accumulate a
significant quantity of oil and oil mist in the
combustion chamber which, if the burner then fires, can
result in a dangerous situation. Any such accumulation
of oil must be removed by safe means before any further
attempt to light the burner.
