Instructions
TriMax Instructions
1. Press the round INSTALLER button. See Fig. 8.
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 high fire (100%). Hold down the RIGHT
button to rapidly increase the firing rate.
6. If the combustion levels during high fire (100%)
are outside the recommended combustion set-
tings adjust the THROTTLE SCREW (see Fig.
7) using a flat-blade screwdriver as follows:
Counter-clockwise adjustment of the THROT-
TLE SCREW at High Fire:
O
2
decreases and C0
2
increases
Clockwise adjustment of the THROTTLE
SCREW at High Fire:
O
2
increases and CO
2
decreases
7. Once the combustion level is set at high fire
(100%), manually place the boiler into low fire
(1%) mode by pressing the LEFT button to
adjust firing rate down.
8. If the CO
2
combustion level at low fire (1%) is
not within +/-0.2% of the combustion level mea-
sured at high fire, remove the offset cover screw
and adjust the plastic OFFSET SCREW using a
T40 Torx screwdriver (see Fig. 7) as follows:
Counter-clockwise adjustment of OFFSET
SCREW at Low Fire:
O
2
increases and CO
2
decreases
Clockwise adjustment of OFFSET SCREW at
Low Fire:
O
2
decreases and CO
2
increases
9. Press the OK button while the fan icon is high-
lighted to shutdown the burner.
NOTICE
PRESTIGE Solo 175 & 250
Service Parts Instructions
9
Installer
Button
Fig. 8: Trimax Navigation Buttons
Manual Operation
Released
Off
Off
Off
CH
CH1
FAN
DHW
SYS
CH2
Offset Pressure
Cover Screw
Throttle
Screw
Fig. 7: Combustion Adjustment - Prestige Burner