Rayburn Heatranger 440 Installation Instructions Manual - Commissioning Instructions
22
Checks to ensure electrical safety should be carried out
by a competent person.
SEE FIG. 17
Remove the bleed screw from the manifold and fit an oil
pressure gauge with R 1/8 connection to check the pump
output pressure.
Switch on the Electricity
Set the boiler burner time clock switch to continuous and
turn the boiler thermostat to maximum. The boiler burner
should run on pre-purge for 7 - 15 seconds with the
ignition spark energised. The solenoid valve should then
open allowing the burner to fire.
Until all the air from the oil pump is flushed out there may
be some flame instability resulting in the burner locking
out.
This will be shown by the burner stopping and the
illumination of the signal light in the reset button of the
control box (See Fig. 17). In this event,
wait at least one
minute
, then press the re-set button to restart.
SEE FIG. 17
Whilst the burner is running, vent air from the pump by
slackening the pressure gauge connection sufficient to
allow air to bleed out. When bubble free oil seeps out
retighten.
SEE FIG. 16
Whilst the burner is running check the oil pressure on the
pressure gauge.
If the pressure gauge is not indicating the correct reading
then adjust the pressure by turning the pressure regulator
clockwise to increase or anti-clockwise to decrease the
pressure until the pressure gauge reads 10 bar (145
Ib/In
2
).
Switch off the burner, remove the pressure gauge and
refit the bleed screw.
NOTE: 440K ONLY
Increase/decrease the pressure until the pressure gauge
reads 8 bar (120psi).
NOTE: 499K ONLY
During initial start up, the pressure will indicate
approximately 100 psi for 30 seconds then up to 10 bar
(145Ib/in). Any adjustments must be made after this
sequence has been completed.
Commissioning Instructions
FIT PRESSURE GAUGE
ELECTRICAL CHECK
VENT OIL PUMP
Fig. 17
Fig. 18
Fig. 18A
DESN 511999
DESN 511997
DESN 512046
ADJUST OIL PRESSURE
RESET BUTTONS
PRESSURE PORT/ BLEED
SCREW
OIL PRESSURE
ADJUSTMENT