Calibration
HeatNet Control V3 1.x
Page 59
Calibration
The calibration of the KN-Series boiler
should only be performed by a
licensed technician
.
To enter the calibration menus, place the S2 switch on the
main control board to the CAL position.
Be sure to set this switch back to NORM when the
calibration is complete, otherwise no external control inputs
will work (except T1-T2), the display will always indicate
CALIBRATE and some of the runtime temperatures will
not be displayed.
The MIN VFD setting, the MAX VFD setting, and the
Ignition setting can be adjusted in the calibration displays.
The values can be changed while running
ONLY IN
MINIMUM FIRE
(any, but only one of the T inputs closed).
Prior to ignition, the values may be changed, but the blower
will not operate.
The Low Fire Hold switch is located near the
Calibration switch.
Press the arrow keys until MIN VFD is shown in the
display, along with the minimum percentage value at which
the boiler is to run at min fire. While in Standby (no call for
heat on inputs), the minimum percent may be preset. To set
the minimum rate while running, any (1), and only (1) of the
(T) inputs must be closed in order to set the boiler to
MINIMUM fire. Press the SELECT key for approximately
1 second. The Percentage value will start flashing,
indicating that it can be adjusted. Adjust the Minimum value
to the desired setting using the arrow keys. The Minimum
setting is clamped to its lowest rated setting and cannot be
adjusted below this. Once you are done with this setting,
press the SELECT key until the value stops flashing. The
new setting is now saved.
Press the Arrow key to select the IGNITION percent. The
Blower speed will be set here to provide the rate for
ignition. While in Standby (no call for heat on inputs), the
Ignition percent may be preset, before firing the boiler. To
set the ignition rate while running, any (1), and only (1) of
the T inputs must be closed Pressing the SELECT key here
will cause the IGNITION setting to flash and the boiler will
ramp to the ignition setting. Adjust it using the arrow keys
and then press the SELECT key until the value stops
flashing. The new setting is now saved.
