AERCO Esteem O&M Manual - Manual (Page 72)

66
Check Ignition Wiring and Ground Wiring
Check Ignition Wiring and Ground
Wiring
• Inspect the burner wiring from the burner
control module to the ground terminal be-
hind the control panel.
• Ensure wiring is in good condition and
securely connected.
• Check ground continuity of the wiring to
the boiler jacket or piping using a continu-
ity meter.
• Replace and correct ground wire if ground
continuity is not satisfactory.
Check Control Wiring
Inspect all control wiring. Ensure wiring is in
good condition and properly connected.
Check Control Settings
1. Set the control display to PARAMETER
mode and check all boiler settings. Adjust
setting as necessary. See page 51.
2. Check any external limit control settings
(if used). Adjust settings as necessary.
Check Burner Flame
Inspect the burner flame through the observa-
tion port on 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.
3. Close the external manual gas valve on
the gas supply line and disconnect the
gas piping and rectifier plug.
4. Disconnect the wiring harness connectors
from the blower and remove the blower
retaining screws or nuts.
5. Remove the blower from the unit.
6. Remove the mounting nuts securing
the burner mounting plate to the heat
exchanger and set aside.
7. Remove the burner mounting plate
assembly from the heat exchanger. Do
Not damage combustion chamber insula-
tion during removal of burner mounting
plate assembly. See WARNING page 67.
8. Remove the burner head mounting
screws and remove the burner head.
9. Inspect the burner head for deterioration.
Use compressed air or a vacuum to clean
the burner head.
10. Remove the venturi and gas valve
assembly from the blower.
11. Use a vacuum cleaner or compressed air
to clean the interior of the blower assem-
bly.
12. Inspect the blower blades to ensure they
are clean and not damaged.
13. Re-assemble the venturi and gas valve
onto the blower.
14. Ensure the venturi gasket is in good con-
dition, positioned correctly and replace
gasket if necessary.
15. Re-assemble the burner head onto the
burner mounting plate.
16. Ensure the burner head gasket is in good
condition, positioned correctly and replace
gasket if necessary.
17. Re-assemble the burner mounting plate
assembly onto the heat exchanger.
18. Ensure the burner plate gasket and com-
bustion chamber insulation is in place and
not damaged, replace gasket and insula-
tion if necessary. See WARNING on page
67.
19. Re-assemble the blower onto the burner
mounting plate and reconnect the wiring
harness connectors.
20. Re-assemble the gas supply connection
and rectifier to gas valve. Open the exter-
nal manual gas valve. Check for any gas
leaks as outlined on page 40 and repair if
necessary. Place the unit back into ser-
vice.
GF-125