UTICA BOILERS UBSSC-050 Installation, Operation & Maintanance Manual page 36

Figure 11-2 Condensate Trap
Flue Pipe
Coupling
Condensate Collector
Condensate Trap connection
to Condensate Collector
Flexible Gas Line
11 - GENERAL MAINTENANCE AND CLEANING
Temperature Sensor
Hose Barb w/Cap
11.2 Annual Shut Down Procedure
• Follow instructions "To Turn Off Gas To Appliance"
boiler is also used to supply domestic hot water. See
section 10.
• Drain system completely if system does not have
antifreeze when heating system is to remain out of
service during freezing weather.
• Drain condensate lines when boiler is to be exposed to
freezing temperatures.
WARNING
!
Following service procedures must be performed
by qualifi ed service agent. Boiler owner shall not
attempt these steps. Failure to do so could result in
death or serious injury.
11.3 Annual Inspection and Cleaning of Boiler
Components
• Obtain Burner Inspection Kit. Follow kit instructions to
prepare for examination and cleaning.
• Burner and heat exchanger inspection and cleaning.
• Remove gasket and burner. Allow burner to clear top
lip of chasiss.
• Remove any residual sleeve and/or gasket material
from removed burner.
• Clean burner using air hose directed into top of
burner opening to dislodge any debris in burner ports.
Inspect burner for foreign matter in fl ame ports or
inside burner. Remove foreign matter by blowing with
compressed air or vacuuming. Replace burner if it
cannot be cleaned or is showing deterioration.
• Clean heat exchanger with low pressure water spray.
Use fl exible handle nylon brush to loosen sediment
and oxide on all accessible heating surfaces of heat
exchanger. Take care not to get brush stuck in heat
exchanger.
• Remove any remaining loosened sediment using shop
vacuum with snorkel attachment.
• Clean condensate collector if signifi cant debris found in
heat exchanger.
• Expand upper collet clip of condensate trap using
hose clamp pliers. Disconnect condensate trap from
condensate collector. See fi gure 11-2.
• Disconnect wire harness from vent temperature
sensor. See fi gure 11-2.
• Loosen upper hose clamp securing condensate
collector to fl ue pipe using 3/8" socket with 6"
extension.
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