page no. 31 of 48
LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.
4. If it is necessary to adjust either the high fire or low fire
pressures proceed as follows after levering off the plastic
cover from the High/Low regulator.
Note: High fire setting must be adjusted first
after which the low fire setting can be set. Any
adjustment of the high fire setting alters the
minimum setting.
Maximum Setting.
With the controls set to high fire, use an adjustable
or 10mm spanner to screw the adjustment nut in to
increase and out to decrease, until the required pressure
is obtained.
Turn the burner On and OFF several times to check the
pressure setting and then turn off.
Minimum Setting.
Disconnect electrical connection to the regulator and turn
the burner back on and wait until the burner pressure has
stabilised.
Keeping the nut stationary, use a 6 x 1 screwdriver to turn
the slotted adjustment screw clockwise to increase and
counter-clockwise to decrease, until the required pressure
is obtained.
Reconnect high/low regulator and check high fire
pressure.
Repeat both steps if necessary and then replace cover cap
Adjustment nut (10mm)
for maximum pressure
setting
Cap
Adjustment screw
for minimum
pressure setting
5. Turn off the main burner, disconnect the pressure
gauge and replace the sealing screw.
IMPORTANT: The internal pipe work of the
appliance has been tested for soundness
before leaving the factory. After establishing
the main burners test round the gas inlet
connection using a leak detection fluid.
1. Switch on the electrical supply at the isolator.
NOTES: If the red indicator illuminates, remove
the adjacent black cap and press the High Limit
Reset button. If the amber rocker switch
illuminates, depress the switch for 2 seconds
to reset the burner lockout.
2. The ignition sequence should now commence. After
a delay of approximately 45 seconds the ignition spark
will be generated and the main gas valves energized. The
burners will then light.
3. If the burners fail to light the control box will complete
a further four ignition attempts. If at the end of five
attempts the burners have still not lit the control box
will go to lockout and the amber rocker switch will be
illuminated. To restart the ignition sequence depress the
illuminated reset button for about 1-2 seconds.
4. SHUT OFF Set the external controls to OFF or MIN.
This is set for the required heat input before despatch.
High and low pressures should be checked in the following
manner
:
1. Set external controls to ensure the main burner is off.
Open the side access panel. Connect a pressure gauge
to the burner pressure test point on the multifunctional
control.
2. Set external controls to turn on the main burner and
maintain high fire. Compare the measured burner gas
pressure to that stated on the data plate. In addition it
is advisable to check the gas rate using the gas meter
dial pointer ensuring that no other appliances supplied
through the meter are in operation.
3. Repeat 2 above with external controls set to maintain
low fire.