Check Control Wiring; Check Control Settings; Perform Start-Up And Checkout Procedures; Check Burner Flame - TriangleTube PRESTIGE Excellence 110 Installation & Maintenance Manual

CHAPTER 17 - MAINTENANCE PROCEDURES

17.14. Check Control Wiring

Inspect all control wiring. Ensure wiring is in good con-
dition and properly connected.

17.15. Check Control Settings

• Review all boiler settings in the Heating & DHW
EZ Setup menus. Adjust settings as necessary, see
Section 9.7 on page 42 and Section 9.8 on page 44
• Check any external limit control settings (if used).
Adjust settings as necessary.
17.16. Perform Start-up and Checkout Proce-
dures
• Start the unit and perform the start-up procedures
as listed in Chapter 11 on page 55.
• Verify the cold water fill pressure is correct and the
operating pressure of the boiler is within normal
operating range.
• Complete the checkout procedures as outlined in
Chapter 14 on page 63.

17.17. Check Burner Flame

• Inspect the flame pattern through the observation
port of the heat exchanger.
• If flame pattern is not fully blue and covers the entire
burner surface during high fire, shut the unit down
and allow it to cool thoroughly before disassembly.
• Close the external manual gas valve on the gas
supply line and disconnect the gas piping and gas
valve wire harness connector.
• Disconnect the wiring harness connectors from the
blower and remove the blower clamp. Remove the
blower from the unit.
• Remove the mounting nuts securing the burner
plate to the heat exchanger and set aside.
• Carefully remove the burner plate assembly from
the heat exchanger. Ensure that the combustion
chamber 2-in-1 insulation is not damaged during
removal of burner mounting plate assembly.
• Remove the burner head mounting screws and re-
move the burner head. Inspect the burner head for
deterioration. Use compressed air or a vacuum to
clean the burner head.
• Remove the venturi and gas valve assembly from
the blower.
• Use a vacuum cleaner or compressed air to clean the
interior of the blower assembly. Inspect the blower
blades to ensure they are clean and not damaged.
• Re-assemble the venturi and gas valve onto the
blower. Ensure the venturi gasket or o-ring is in
good condition and positioned correctly. Replace
gasket or o-ring if necessary.
• Re-assemble the burner head onto the burner
mounting plate. Ensure the burner head gasket
is in good condition and positioned correctly. Re-
place gasket if necessary.
• Re-assemble the burner plate assembly onto the
heat exchanger. Ensure the combustion chamber
2-in-1 insulation is in place and positioned correct-
ly. Replace if necessary.
• Remove the blower gasket from the burner plate
assembly and clean with fresh water. Reinstall
blower gasket onto burner plate assembly with the
check valve hinge at the top.
• Re-assemble the blower onto the burner plate and
reconnect the wiring harness connectors.
• Re-assemble the gas supply connection and wire
harness to the gas valve. Open the external manual
gas valve. Check gas piping for any leaks as outlined
in Section 10.4 on page 53 and repair if neces-
sary.
• Torque all screws, bolts, and nuts in accordance
with specifications in Section 17.24 on page 72.
• Place the unit back into service.

17.18. Check Flame Signal

• The flame signal can be read from the Boiler Infor-
mation screen. It should be a min. 2-3 μΑ at low fire.
• Check the ignitor condition if flame signal is low.
• Check ground wire for continuity if flame signal is
low. Replace ignitor if conditions are satisfactory.

17.19. Check Combustion Levels

Refer to Section 11.3.5 on page 56 for measuring
combustion levels and burner adjustments.

17.20. Check Flue Gas Temperature

Manually place the boiler into high fire. See Section
•
11.3.5 on page 56 for procedure.
• Navigate to the Boiler Information Menu to observe the
flue gas temperature. See Section 9.12 on page 46 .
• If the flue gas temperature is more than 54°F [30°C]
above the supply water temperature, shut the boil-
er down and follow the heat exchanger cleaning
procedure below.
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