Safety Precautions; Planned Service - Lennox Merit Series User's Information Manual

SAFETY PRECAUTIONS

If you discover any of the following, shut down your
unit, and contact a Lennox dealer for an inspection
by a licensed professional service technician (or
equivalent).
> If you repeatedly hear any new or unfamiliar sounds
while your unit is operating, there may be a problem.
For example, poorly performing burners can produce
unfamiliar noises.
> If you smell any unusual odors, your unit may be
operating improperly. For example, units can give off
unfamiliar odours if components are required to operate
in abnormal conditions.
> Look for visible signs of a malfunctioning unit. Examples
include unusual amounts of condensate on windows
inside your house, visibly burnt components or unusual
dirt or rust accumulations on the vent pipe or in the unit.
> If you experience headache, nausea, fatigue, or dizziness,
the cause could be exposure to carbon monoxide gas.
This is often misdiagnosed as the flu because symptoms
are similar. If you suffer from flu-like symptoms that are
exaggerated at home, but seem to subside while you
are away from the house, exposure to carbon monoxide
could be the cause.
Your vigilance may pay off in early detection of a problem
before either personal injury or property damage occurs.
Do not hesitate to contact a qualified service technician as
an investment in your well being.

PLANNED SERVICE

You should expect a service technician to check the
following items during an annual inspection. Power to the
unit must be shut off for the service technician's safety.
Fresh air grilles and louvers (on the unit and in the
room where the furnace is installed) − Must be open and
unobstructed to provide combustion air.
Burners − Must be inspected for rust, dirt, or signs of
water.
Vent pipe − Must be inspected for signs of water, damaged
or sagging pipe, or disconnected joints.
Unit appearance − Must be inspected for rust, dirt, signs
of water, burnt or damaged wires, or components.
Blower access door − Must be properly in place and
provide a seal between the return air and the room where
the furnace is installed.
Return air duct − Must be properly attached and provide
an air seal to the unit.
Operating performance − Unit must be observed during
operation to monitor proper performance of the unit and the
vent system.
Combustion gases − Flue products must be analyzed and
compared to the unit specifications.
Problems detected during the inspection may make it
necessary to temporarily shut down the furnace until the
items can be repaired or replaced.
Pay attention to your furnace. Situations can arise
between annual furnace inspections that may result in
unsafe operation. For instance, items innocently stored next
to the furnace may obstruct the combustion air supply. This
could cause incomplete combustion and the production of
carbon monoxide gas.
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