Page 28 Reznor, PVE, Installation Manual EN 2019-11, D301113 iss D
foreign material will fall away from the
burner, use a stiff bristle brush to loosen and
remove any foreign material(s). If the burner
is excessively dirty, remove one of the burner
end caps.
Figure 14 : Burner cleaning
Remove the four screws that hold the end cap
to the burner housing. Lightly tap the end cap
to remove it.
Clean all foreign material from the burner and
venturi. After the burner is thoroughly clean,
replace the end cap making certain that it is
tight against the burner housing.
Note: If any of the burner components
are damaged or deteriorated, replace the
burner assembly.
Inspect the Internal Portion of
the Heat Exchanger (with burner
assembly removed)
At the burner flame entrance of each tube,
shine a bright light into each heat exchanger
section. With the light shining into the heat
exchanger, observe the outside surface of
the tube where discolouration is evident.
Be sure to repeat this procedure with each
heat exchanger tube. If any light is observed
in these high temperature regions, replace the
heat exchanger.
Reinstall the burner
Repeat ‘Burner removal’ steps in reverse order
Burner orifice
The burner orifice will normally need to be
replaced only when a change in gas is made.
When ordering a replacement injector, provide
(MJ/m3) heating value and specific gravity of
gas, as well as the model and serial number of
the unit.
When removing or replacing the burner orifice
be careful not to damage the venturi tube and/
or the bracket
Figure 15 : Burner orifice
Ignition system
Due to high voltage on the spark
wire and electrode, do not touch
when energized.
Locate the igniter. Disconnect the wire; remove
the screw and igniter, and clean the assembly
with an emery cloth. Spark gap must be
maintained to 3 mm.
Figure 16 : Igniter showing required spark gap
measurement
