Operation - Vaillant TURBOmax Pro 28 Instructions For Installation And Servicing

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Fig. F.2: Functional check
(COMMISSIONING PART III)
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5
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2
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FUNCTIONAL CHECKS

Operation

The Vaillant TURBOmax Pro is
equipped with a set of diagnostic
indicator lights to show the
operational status of the boiler.
A functional check of DHW and CH
operation can be made using these
indicator lights.
Hot water system
Ensure that the power on indicator
(1) is illuminated.
Turn on a hot top and draw water
at a high rate.
The hot water demand indicator (2)
will illuminate.
The appliance will start its lighting
sequence. Once the fan and flue
system has proved itself, the fan
operation indicator (4) will light.
The gas valve will open and
sparking will commence at the
burner. The ignition indicator (5)
will illuminate.
As soon as the burner has ignited
and the flame has been sensed the
flame indicator (6) will illuminate.
By illuminating in this sequence the
indicator lights have demonstrated
correct operation of the boiler for
DHW.
Note: Should the boiler fail to light it
will attempt 2 re-ignition sequences,
if the boiler still fails to light the
burner lock out indicator will
illuminate (7). This usually means
that the gas supply is turned off or
has not been purged of air. Check
the gas supply, push the reset button
and repeat the lightning procedure.
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