PRESTIGE Excellence
HX Field Replacement
Kit
13
The control panel will display a L followed by
the current boiler temperature when placed into
low fire test mode.
4. If the CO2 combustion level during low fire is
not /- 0.2 of the combustion level mea-
sured at high fire, remove the offset cover screw
and adjust the plastic OFFSET SCREW (see Fig
14) using a T-40 Torx wrench as follows:
Counter-clockwise adjustment of the OFFSET
SCREW at Low Fire:
O2 increases and CO2 decreases
Clockwise adjustment of the OFFSET SCREW
at Low Fire:
O2 decreases and CO2 increases
TriMax Control Procedure
1. Press the round INSTALLER button. See Fig.
15.
2. Enter the installer access code “054” by using the
LEFT
and
RIGHT
buttons to select a digit and
the
UP
and
DOWN
buttons to change the digit.
Press the
OK
button to enter the access code.
3. Press the
RIGHT
button to highlight the
Manual Operation icon
then press the
OK
button.
4. Press the
OK
button while the FAN icon is
highlighted to manually fire the burner and
power the CH circulator.
An adequate CH load must be present to dis-
sipate the heat generated during the combus-
tion test. If an adequate CH load is not avail-
able, an indirect water heater can be used to
dissipate the heat by creating a DHW call
which will enable the DHW circulator.
5. Press the
RIGHT
button to adjust the firing rate
to 100% (high fire). Hold down the
RIGHT
button to rapidly increase the firing rate.
6. If the combustion levels during high fire are
outside the recommended combustion settings
adjust the THROTTLE SCREW (see Fig. 14)
using a flat-blade screwdriver as follows:
NOTICE
NOTICE
Installer
Button
Fig. 15: Trimax Navigation Buttons
Manual Operation
Released
Off
Off
Off
CH
CH1
FAN
DHW
SYS
CH2
Throttle
Screw
Offset Pressure
Cover Screw
Fig. 14: Combustion Adjustment - Prestige Burner
