Safety Precautions; Planned Service - Lennox EL296DFV 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 equiva­
lent).
D 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 unfa­
miliar noises.
If you smell any unusual odors, your unit may be operat­
D
ing improperly. For example, units can give off unfamil­
iar odors if components are required to operate in ab­
normal conditions.
Look for visible signs of a malfunctioning unit. Examples
D
include unusual amounts of condensate on windows in­
side 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 dizzi­
D
ness, 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 symp­
toms that are exaggerated at home, but seem to sub­
side while you are away from the house, exposure to
carbon monoxide could be the cause.
WARNING
Do not use this furnace if any part has been under­
water. A flood-damaged furnace is extremely dan­
gerous. Attempts to use the furnace can result in fire
or explosion. Immediately call a licensed pro­
fessional service technician (or equivalent) to in­
spect the furnace and to replace all gas controls,
control system parts, and electrical parts that have
been wet or to replace the furnace, if deemed neces­
sary.
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 follow­
ing items during an annual inspection. Power to the unit
must be shut off for the service technician's safety.
WARNING
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal inju­
ry or death.
Annual Furnace Maintenance
At the beginning of each heating season, and to comply
with the Lennox Limited Warranty, your system should
be checked as follows by a licensed professional service
technician (or equivalent).
1- Check wiring for loose connections, voltage at indoor
unit and amperage of indoor motor
2- Check the condition of the belt and shaft bearings if ap­
plicable.
3- Inspect all gas pipe and connections for leaks
4- Check the cleanliness of filters and change if necessary
(monthly).
5 Check the condition and cleanliness of burners and
heat exchanger and clean if necessary.
6 Check the cleanliness of blower assembly and clean
the housing, blower wheel and blower motor if neces­
.
sary
7- Inspect the condensate drain and trap for leaks and
cracks. The drain and trap must also be cleaned and the
trap must be primed with water. Inspect the rubber
hoses connected to the pressure switches for cracks or
loose connections, replace as necessary. Remove the
rubber hoses from the cold end header box and inspect
for any blockage, clean as needed. If strainers are in­
stalled in the hoses remember to remove and clean be­
fore re­installing the hoses.
8- Evaluate the heat exchanger integrity by inspecting the
heat exchanger per the AHRI heat exchanger inspec­
tion procedure.
www.ahrinet.org
9- Ensure sufficient combustion air is available to the fur­
nace. Fresh air grilles and louvers (on the unit and in the
room where the furnace is installed) must be properly
sized, open and unobstructed to provide combustion
.
air
10 Inspect the furnace intake and exhaust pipes to make
sure they are in place, structurally sound, without holes,
blockage or leakage and the exhaust pipe is sloped to­
ward the furnace. Inspect terminations to ensure they
are free of obstructions and are structurally sound.
Inspect the furnace return air duct connection to ensure
the duct is sealed to the furnace. Check for air leaks on
supply and return ducts and seal where necessary
11 Inspect the furnace return air duct connection to ensure
the duct is sealed to the furnace. Check for air leaks on
supply and return ducts and seal where necessary
12 Check the condition of the furnace cabinet insulation
and repair if necessary.
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This procedure can be viewed at
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