(2) Identify the input voltage of the system by looking at the white
label on the VFD.
For 115V
Leave
the
left Dip Switch (#2)
of the appropriate Dip Switch set, as determined
in the previous step,
down
toward the floor.
Move
the
right Dip Switch (#1)
of the appropriate Dip Switch set, as determined
in the previous step,
down
toward the floor.
For 230V or 460V
Move
the
left Dip Switch (#2)
of the appropriate Dip Switch set, as determined in
the previous step,
up
toward the ceiling.
Move
the
right Dip Switch (#1)
of the appropriate Dip Switch set, as determined
in the previous step,
down
toward the floor.
(3) Wait up to 90 seconds for Actual Pressure to stabilize
(4) Record the Actual Pressure
Top Line Reads:
(Disregard if system is for Combustion Air only)
Second from Top Line Reads:
(Disregard if system is for Draft only)
K-1. Fan Rotation Setting
Compare the last two readings of Actual Pressure recorded on pages 6 and 7.
For a
Draft
system, identify the more negative Actual Pressure reading and
configure the Dip Switches in
the manner that resulted in that more negative Actual Pressure
reading.
If more negative reading is the reading recorded on page 6 configure as shown on page 2.
If more negative reading is the reading recorded on page 7 configure as shown on page 7.
For a
Combustion Air
system, identify the more positive Actual Pressure reading and
configure the
Dip Switches in the manner that resulted in that more positive Actual Pressure
reading.
If more positive reading is the reading recorded on page 6 configure as shown on page 2.
If more positive reading is the reading recorded on page 7 configure as shown on page 7.
Operation
Mode
Set
Point
Actual
Pressure
% Speed
Operation
Mode
Set
Point
Actual
Pressure
% Speed
7
Note: The above numbers have no meaning in regards to these steps--
they are merely placeholders. Your numbers do not need to match these.
