21
Servicing should only be performed by a Quali
fi
ed Service Technician
MAINTENANCE
MAINTENANCE SCHEDULES
SERVICE TECHNICIAN
(SEE THE FOLLOWING PAGES FOR
INSTRUCTIONS)
ANNUAL
General:
• Address reported problems
• Inspect interior; clean and
vacuum if necessary;
• Clean condensate trap and
fi
ll
with fresh water
• Check for leaks (water, gas,
fl
ue, condensate)
• Verify
fl
ue and air lines in
good condition and sealed
tight
• Check system water pressure
and expansion tank
• Check control settings
• Check ignition and
fl
ame
sense electrodes (clean
off any deposits; clean and
reposition)
• Check wiring and connections
• Perform start-up checkout
and performance veri
fi
cation
per Section 10 of this service
handbook.
• Flame inspection (stable,
uniform)
• Flame signal (at least 10
microamps at high
fi
re)
• Clean the heat exchanger
if
fl
ue temperature is more
than 54°F above return water
temperature.
• Check Delta T (Temperature
Rise). Refer to Table 7 in this
Service Handbook.
If combustion or performance
indicate need:
• Clean heat exchanger
• Remove and clean burner
using compressed air only
OWNER MAINTENANCE
DAILY
Check water heater area
MONTHLY
• Check vent piping
• Check air piping
• Check air and vent
termination screens
• Check T & P relief valve
• Check condensate drain
system
• Check automatic air vents
• Check Delta T (Temperature
Rise)
EVERY 6
MONTHS
• Check water heater piping
(gas and water) for leaks
• Operate T & P relief valve
Table 5. Service And Maintenance Schedules
