Maintenance; Maintenance Schedules - Smith XWH 150 Instruction Manual

MAINTENANCE SCHEDULES

SERVICE TECHNICIAN
(SEE THE FOLLOWING PAGES FOR INSTRUCTIONS)
General:
ANNUAL
If combustion or performance indicate
need:

MAINTENANCE

Table 29. Service and Maintenance Schedules
• Address reported problems
• Inspect interior; clean and vacuum
if necessary;
• Clean condensate trap and fill with
fresh water
• Check for leaks (water, gas, flue,
condensate)
• Verify flue and air lines in good
condition and sealed tight
• Check system water pressure
system piping/expansion tank
• Check control settings
• Check ignition and flame sense
electrodes (clean off any deposits;
clean and reposition)
• Check wiring and connections
• Perform start-up checkout and
performance verification per Start
Up section of this manual.
• Flame inspection (stable, uniform)
• Flame signal (at least 10
microamps at high fire)
• Clean the heat exchanger if flue
temperature is more than 54°F
above return water temperature.
• Check Delta T (Temperature
Rise). Refer to Table 22 on Page
37.
• Clean heat exchanger
• Remove and clean burner using
compressed air only
• Clean the blower wheel
OWNER MAINTENANCE
DAILY
MONTHLY
EVERY 6
MONTHS
60
• Check water heater area
• 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)
• Check water heater piping (gas
and water) for leaks
• Operate T & P Relief Valve