Prestige
Venturi Replacement
4
1. Press the round INSTALLER button.
DHW Demand
Target = 186°F
Installer Button
Fig. 5: Navigation Buttons
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 high-
lighted to manually fire the burner and power the
CH1 circulator (see Fig. 6)
Manual Operation
Released
Off
Off
Off
CH1
FAN
DHW
CH2
Manual Operation
Released
Off
Off
Off
CH1
FAN
DHW
CH2
Manual Operation
Released
Off
Off
Off
CH2
FAN
DHW
CH1
Manual Operation
Released
Off
Off
Off
DHW
FAN
CH1
CH2
Fig. 6: Manual Operation
NOTICE
An adequate CH load must be present to dissipate the heat
generated during the combustion test. If an adequate CH
load is not available 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 using a flat-blade screwdriver as
follows:
Counter-clockwise adjustment of the THROTTLE SCREW
at High Fire (100% firing rate):
O2 decreases and CO2 increases
Clockwise adjustment of the THROTTLE SCREW at High
Fire (100% firing rate):
O2 increases and CO2 decreases
7. Once the combustion level is set at high fire, manu-
ally place the boiler into low fire mode by pressing
the LEFT button to adjust firing rate down to 1%
(low fire) to verify low fire combustion settings.
8. If the combustion levels (O
2
& CO
2
) during low fire
are outside the recommended combustion set-
tings in Tables 2, contact Triangle Tube Technical
Support Department for assistance.
9. Press the OK button while the fan icon is highlight-
ed to shutdown the burner.
10. 11. Press the LEFT or RIGHT button to highlight the
home screen icon to exit the service mode.
11. Replace the front jacket panel and secure with
screws.
12. Turn on the electrical power supply to the Prestige
boiler and return the unit back to service.
