Install Instructions

76
Maintenance and annual startup
Table 12A Service and Maintenance Schedules
Service technician
(see the following pages for instructions)
General:
• Address reported problems
• Inspect interior; clean and vacuum if
necessary;
• Clean condensate trap
• 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 fill water meter
• Test boiler water. When test indicates,
clean system water with approved
system restorer following manufacturer’s
information.
• Check control settings
• Check ignition electrodes (sand off any
deposits; clean and reposition)
• Check wiring and connections
• Perform combustion start-up checkout
and performance verification per Section
10 of this manual (CO levels shall be less
than 200 ppm).
• 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.
• Inspect and clean the DHW flow switch
filter and sanitary bypass filter in the Combi
waterset.
• Check venturi flapper for free motion.
If combustion or performance
indicate need:
• Clean heat exchanger
• Remove and clean burner using
compressed air only
ANNUAL START-UP
Owner maintenance
(see the Noble Fire Tube User’s Information Manual
for instructions)
Daily
• Check boiler area
• Check pressure/temperature
gauge
Monthly
• Check vent piping
• Check air piping
• Check air and vent termination
screens
• Check relief valve
• Check condensate drain system
• Check air vents
Periodically
• Test low water cutoff (if used)
• Reset button (low water cutoff)
Every
6 months
• Check boiler piping (gas and
water) for leaks
• Operate relief valve
End
of season
months
• Shut boiler down (unless boiler
used for domestic hot water)
12 Maintenance
Installation & Service Manual
FIRE TUBE
™