CALIBRATION
HeatNet Control V3
Page 94
Calibration
The calibration of the Torus Series boiler
should only be performed by a
licensed/Certified technician
.
All calibration settings should be adjusted based on the
boiler’s parameters. See the Boiler Installation, Operation,
and Maintenance manual (IOM).
To enter the calibration menus, place the S2 switch on the
main control board to the CAL position. A reloading
message will be displayed and then the calibrate screen.
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 MINIMUM (%), MAXIMUM (%), and the IGNITION
(%) settings can be adjusted from the calibration screen. 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.
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.
To adjust the MINIMUM (%) as shown in the display, press
the Adjust button under the Minimum setting. The
percentage value will turn green. 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 ‘X’ key to throw out the setting or the check key to
save.
All Faults must be cleared before
adjustments can be made.
To adjust the IGNITION value as shown in the display,
press the Adjust button under the IGNITION setting. The
percentage value will turn green. 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 Adjust key here will cause the IGNITION
setting to turn green and the boiler will ramp to the ignition
setting. Adjust it using the arrow keys and then press the
green check key to save the value. Press the ‘X’ key to
discard the setting.
The MAXIMUM % value is used to set the maximum fire
rate of the boiler. To adjust the Maximum fire rate of the
boiler, press the Adjust button under the Maximum (%)
value shown in the display. The percentage value will turn
green. Then use the arrow keys to adjust the value up or
down. Adjust it using the arrow keys and then press the
green check key to save the value. Press the ‘X’ key to
discard the setting.
