AERCO Esteem O&M Manual - Manual (Page 73)

67
Check Flame Signal
Check Flame Signal
The flame signal can be read from item E of the
information mode. It should be a min. 3μ Α −DC.
Check the ignitor for fouling or damaged insu-
lation if a low flame signal is read.
Check ground wiring and continuity as a cause
for low flame signal. Replace ignitor if condi-
tions are satisfactory.
Check Combustion Levels
Refer to page 43 of this manual for measuring
combustion levels and burner adjustments.
Check Flue Gas Temperature
1. Adjust the boiler to fire at HIGH fire, see
page 49. Place the control display to INFO
mode, see page 52 for procedures.
2. The flue gas temperature is indicated on
the display when the first digit is 5. The
measured temperature (shown as the last
3 digits) should not be more than 54ºF
higher than the measured supply water
temperature.
3. The measured supply water temperature
is indicated on the information display
when the first digit is 1 and the tempera-
ture shown as the last 3 digits.
4. If the measured flue gas temperature is
higher than 54ºF over the supply water
temperature, shut the boiler down and fol-
low the procedures listed below to clean
the heat exchanger.
Handling Previously Fired Combustion Chamber Insulation
WARNING
W
HEN REMOVING OR REPAIRING THE COMBUSTION CHAMBER INSULATION FOLLOW
THESE PRECAUTIONARY MEASURES
:
• Use a NIOSH approved respirator which meets OSHA requirements for cristobalite dust,
similar to N95. Contact NIOSH at 1-800-356-4676 or on the web at
www.cdc.gov/niosh for latest recommendations.
• Wear long sleeved, loose fi tting clothing, gloves and eyes protection.
• Assure adequate ventilation.
• Wash with soap and water after contact.
• Wash potentially contaminated clothes separately from other laundry and rinse washing
machine thoroughly.
• Discard used insulation in an air tight plastic bag.
NIOSH Stated First Aid:
Eye/Skin: Immediately irrigate
Breathing: Clean fresh air
Insulation Handling
GF-125