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VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 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.
* Gas Safe Registered Engineer
2.6.1. Electrical Installation
Checks to ensure electrical safety must be carried out by
a qualified person.
2.6.2. Gas Installation
For new installations, the whole of the gas installation,
including the meter, should be inspected and tested
for soundness and purged in accordance with the
recommendations of IGE/UP/1 (Edition 2) or IGE/UP/2A
as appropriate.
2.6.3. Air Distribution System
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.
Ensure that the duct work is balanced so that the
specified motor running currents are achieved See section
1.2
2.6.4. Checks before Operating the Air
Heater
The following preliminary checks should be made before
lighting the heater(s)
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.
2.6.5. Operating the Air Heater
NOTE: On initial lighting of the heater(s), it may
take some time to purge the internal pipe work
of air.
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.
2.6.6 Adjustments
2.6.6.1. Burner Gas Pressures
This is set for the required heat input before despatch.
High and low pressures should be checked in the following
manner:
2.6.6.1.1. High/Low Regulation
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
2.6 Commissioning and Testing
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