Reznor VPT Unit Installation Manual - Manual (Page 32)

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4.5 Combustion Fan Servicing
Step 1: Remove the four top lid screws to
reveal the combustion fan shown below.
Step 2: Disconnect the fan cables after first
noting their positions, then pull cable through
to fan compartment.
Step 3: Remove the four fan fixing screws
then withdraw the fan complete with
mounting bracket as shown below.
Step 4: Remove fan orifice plate.
Step 5: Inspect the impeller and remove any
dust with a soft brush.
Step 6: Remove any dust from fan scroll and
from around the motor.
Step 7: Ensure the impeller rotates freely.
Step 8: Refit components.
4.6 Burner Head and Electrode Servicing
Step 1: Check the pepper pot burner head for
contamination. If necessary this can be
removed. See below.
This can be cleaned together with the Inside
of the burner head.
Step 2: The pepper pot burner head can be
replaced ensuring the 5 holes on the outer
ring are aligned alongside the probes.
Step 3: The condition of the igniter assembly
can be checked for deterioration. However,
we advise replacement at each service to
ensure continued reliability. Detach the
electrode assembly from the burner head by
removing the two screws as shown and
separating the igniter assembly lead
connectors.