Nortek Reznor FSE 100, Installation, Commissioning, Servicing

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PAGE 34 Reznor, FSE, Installation Manual, EN 2020-02, D301160 Iss H
Figure 21. Fan
To change rpm of the fan,
perform the following operations:
• Relax the belts tension by unloosing the
screw 1
• Remove the belt 4
• Using an allen key, loosen the screws 2
of the sheave 3 movable part.
• Rotate the sheave of the movable part
until the desired original diameter is
reached.
• Firmly tighten the screws 2
• Install the belt 4 and set to correct
tension.
Do not excessively stretch the belts as the
fan shaft could break. When you press the
two sides of the belt with your hands it
must be able to bend about 20-30 mm
FSE 40 Fan motor
The fan motor of the FSE 40 appliance
is keyed directly onto the impeller. The
motor is also available in a three-speed
rotation version. It is shipped from the
factory connected at the minimum speed,
which corresponds to the nominal air flow
without residual useful static pressure; if
it is necessary to increase its performance,
simply connect it to the average or maxi-
mum rotation, respecting the wiring
diagram positioned on the fan itself.
Figure 22. Fan belt
Starting and stopping
To Start
The start-up operation must be performed
by qualified engineer, after making sure
that the components of the plant have
been installed properly and that all the
safety devices have been adjusted correctly.
The first start-up consists of the
following:
• Close the room thermostat contact: the
burner will start the operating cycle and,
after the pre-purge cycle, the flame will
be ignited
• Check that the fan starts about 1
minute after the flame is ignited
• Check the combustion parameters
• Wait for the heater to reach full
temperature (20 min.) And make sure
that the limit thermostat does not
intervene