Maintenance Procedures; Boiler Must Be Serviced And Maintained; Check Boiler Area; Check Pressure Temperature Gauge - Lochinvar KNIGHT XL 100 Series User's Information Manual

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Maintenance schedule

Maintenance procedures

Boiler must be serviced and maintained

The boiler must be inspected and started
⚠WARNING
annually at the beginning of the heating
season by a qualified service technician. In
addition, the maintenance and care of the
boiler designated on page 5 of this manual
and explained on pages 6 through 8 must
be performed to assure maximum boiler
efficiency and reliability. Failure to service
and maintain the boiler and system could
result in equipment failure, causing possible
severe personal injury, death, or substantial
property damage.
The following information provides detailed
NOTICE
instructions for completing the maintenance
items listed in the maintenance schedule on
page 5. In addition to this maintenance, the
boiler must be serviced and started up at
the beginning of each heating season by a
qualified service technician.

Check boiler area

To prevent potential of severe personal
⚠WARNING
injury, death, or substantial property damage,
eliminate all materials discussed below from
the boiler vicinity and the vicinity of the
boiler combustion air inlet. If contaminants
are found:
Remove products immediately from the
area. If they have been there for an extended
period, call a qualified service technician to
inspect the boiler for possible damage from
acid corrosion.
If products cannot be removed, immediately
call a qualified service technician to
re-pipe vent and air piping and locate
vent termination/air intake away from
contaminated areas.
1. Combustible/flammable materials -- Do not store
combustible materials, gasoline or any other flammable
vapors or liquids near the boiler. Remove immediately if
found.
2. Air contaminants -- Products containing chlorine or
fluorine, if allowed to contaminate the boiler intake air,
will cause acidic condensate in the boiler. This will cause
significant damage to the boiler if allowed to continue.
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User's Information Manual
Read the list of potential materials listed in Table 1A on
page 4 of this manual. If any of these products are in the
room from which the boiler takes its combustion air, they
must be removed immediately or the boiler combustion
air (and vent termination) must be relocated to another
area.
Check pressure/temperature gauge
1. Make sure the pressure reading on the boiler pressure/
temperature gauge does not exceed 24 psi (165.5 kPa).
Higher pressure may indicate a problem with the
expansion tank.
2. Contact a qualified service technician if problem persists.

Check vent piping

1. Visually inspect the flue gas vent piping for any signs of
blockage, leakage, or deterioration of the piping. Notify
your qualified service technician at once if you find any
problems.
Failure to inspect the vent system as noted
⚠WARNING
above and have it repaired by a qualified
service technician can result in vent system
failure, causing severe personal injury or
death.

Check air piping

1. Visually inspect the air inlet termination to be sure it is
unobstructed. Inspect the entire length of air piping to
ensure piping is intact and all joints are properly sealed.
2. Call your qualified service technician if you notice any
problems.

Check relief valve

1. Inspect the boiler relief valve and the relief valve
discharge pipe for signs of weeping or leakage.
2. If the relief valve often weeps, the expansion tank may
not be working properly. Immediately contact your
qualified service technician to inspect the boiler and
system.

Check condensate drain system

1. Inspect the condensate drain line, condensate PVC
fittings and condensate trap.
Fill condensate trap with water
1. Remove the four (4) screws securing the top cover to the
condensate trap and remove the cover (FIG. 2-1).
2. Locate the plastic ball inside the float tube. Verify there
is nothing under the ball causing it to not seat properly.
3. Fill with fresh water until the water begins to pour out of
the drain.
4. Replace the top cover and the screws removed in Step 1