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L
NVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.
Gas Safety (Installation & Use) (Amendment)
Regulations
It is law that all gas appliances are installed,
adjusted and, if necessary, converted by
qualified persons* in accordance with the
current issue of the above regulations.
Failure to install appliances correctly can lead to
prosecution. It is in your own interests and that of safety
to ensure that the law is complied with.
* A gas safe registered Engineer.
Heater conversion between gases will require a change of
burner injectors, alteration of burner pressure and
re-commissioning of the heater. (Refer to section 2.6 for
commissioning details.)
Ensure that the gas inlet pressure to the
heater is correct for the new gas, and that the
gas supply has been purged of the old gas.
(Refer to tables opposite for new gas inlet
pressures.)
1. Ensure that the gas service valve is turned OFF.
2. Remove the burner heat shield, 3 screws.
3. Release the outlet connection flange from the gas valve
by removing the four screws.
4. Remove the manifold by removing the four screws
securing it to the burner assembly.
5. Remove the main burner injectors and washers.
6. Replace with the new injectors/washers for the new
gas ensuring a gas tight seal.
7. Refit all other components in reverse order.
All gas valves used on the LNVx range have pressure
regulators that may be set to operate on natural gas or
propane (LPG).
Conversion is carried out by adjusting the high and low
burner pressures to the value in the tables opposite.
(Refer to full regulator adjustment in section 2.6.6.1)
Note*: Ensure the original data badge is
removed and replaced with new data badge
and "change of gas" stickers.
Adjustment nut (10mm)
for maximum pressure
setting
Cap
Adjustment screw
for minimum
pressure setting
Cover
Lever point
Hexagonal
adjustment screw for
maximum pressure
setting
Internal slotted
adjustment screw for
minimum pressure
setting
‘O’ ring
Adjustment nut (9mm)
for minimum pressure setting
Adjustment nut (7mm)
for maximum pressure setting
Cap
Shaft
6.3mm AMP terminals