TriangleTube PRESTIGE Solo PA 110, Installation & Maintenance Manual

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CHAPTER
1
7
CHAPTER 17 - MAINTENANCE PROCEDURES
17.7. Check Ventilation Air Openings
• Verify that all ventilation openings to the mechan-
ical room or building are open and unobstructed.
Check the operation and wiring of any automatic
ventilation dampers.
• Check and verify the vent termination and the com-
bustion air intake are free of debris and obstructions.
17.8. Inspect Vent and Combustion Air Piping
• Visually inspect the venting system and combus-
tion air piping for blockage, deterioration of gas-
kets or leakage. Repair any deficiencies.
• Verify that the combustion air inlet and vent piping
is connected, sealed and properly supported.
Failure to inspect the vent system and combus-
tion air inlet piping and to have any conditions
repaired, will result in serious injury, or death.
17.9. Check Boiler System
• Verify all system components are correctly installed
and operating properly.
• Check the cold fill pressure for the system. Typical
cold water fill pressure is 12 psig.
• Verify the system pressure, as the unit operates at
high temperature, does not exceed 25 psig. Exces-
sive pressure indicates expansion tank sizing is in-
correct or system performance problems.
• Inspect air vent and air separators in the system.
Ensure vents do not leak, replace any leaking vents.
• Verify boiler fluid pH level is between 6.0 and 8.0.
• Check and verify inhibitor /antifreeze concentration
within the boiler water meets inhibitor/antifreeze
manufacturer’s specifications.
• If necessary contact a boiler water treatment com-
pany for a chemical analysis.
17.10. Check Expansion Tank
Refer to Chapter 4 on page 13 for recommended lo-
cation of the expansion tank and air eliminators.
Closed -Type Tank:
• Ensure tank is partially filled with water leaving an
air gap as a cushion. Refer to the manufacturer’s
instruction for proper fill level.
• Ensure the tank is fitted with a device that reduces
DANGER
gravity circulation of air-saturated tank water back
into the system. This device prevents air from bub-
bling up through the water as it returns from the
system.
• Ensure no automatic air vents are used in the sys-
tem. This will allow air to escape from the system
instead of returning to the tank.
Diaphragm Tank:
• Ensure the system contains a minimum of one au-
tomatic air vent. Recommended location of the air
vent should be atop an air eliminator.
• Remove the tank from the system and check the
charge pressure. For residential applications, the
charge pressure is typically 12 psig. If tank does not
hold pressure, then the membrane is damaged and
the tank should be replaced.
17.11. Check Boiler Relief Valve
Inspect the relief valve and lift the lever to verify flow at
least annually or as recommended on the warning tag
of the valve.
Before manually operating the pressure relief
valve, ensure the discharge piping is direct-
ed to a suitable place of disposal to avoid a
potential scald hazard. The discharge piping
must be full size without restriction and in-
stalled to permit complete drainage of both
the valve and line. Failure to comply with this
instruction can result in substantial property
damage, serious injury, or death.
If after closing the valve, the valve fails to seat properly
or continually weeps, replace the relief valve. Ensure
the cause of the relief valve to weep is the valve itself,
not due to system over-pressurization caused by an ex-
pansion tank that is waterlogged or undersized.
17.12. Inspection of Ignitor
• Remove the ignitor from the burner mounting plate.
• Remove any white oxides accumulated on the ig-
nitor using fine grit sandpaper or steel wool. If the
ignitor does not clean to a satisfactory condition,
replace the ignitor .
• When installing the ignitor, ensure the gasket is in
good condition and correctly positioned. Replace
the gasket if necessary. Tighten ignitor screws in
multiple steps, alternating between the screws to
ensure proper alignment. See Section 17.24 on
page 76 for torque specifications.
WARNING