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Proper maintenance is important to achieve optimum performance from the furnace. This equipment should be
inspected annually by a licensed HVAC technician. Table 1, (page 7) contains suggested inspections and
frequency of maintenance. Routine maintenance should include the following:
• Neveroperatethefurnacewithoutalterinplace.Dust
and lint can build up on internal components, resulting
in loss of efficiency, equipment damage, and possible
fire.
• Keepairlterscleaned.Filtersshouldbechangedor
cleaned monthly during the heating/cooling season.
Clean or replace filter to maintain proper airflow and
achieve maximum efficiency. Newly built or renovated
homes may require more frequent changing until the
construction dust has minimized. Filters designed to
remove smaller particles such as pollen, may require
additional maintenance.
• It is recommended that the blower compartment be
cleaned of dirt or lint that may have accumulated in the
compartment or on the blower and motor as part of the
annual inspection.
CONDENSATE DRAINAGE
• Thisfurnaceproducesliquidcondensatewhichisslightly
acidic. The vent pipe must be sloped upwards away
from the furnace to properly drain the water back into
the condensate disposal system.
• Condensate drain tubes must maintain a downward
slope to ensure proper drainage. Periodically inspect
the condensate drain tube for proper drainage. Also,
do not place heavy objects on the tubing that restricts
the flow of condensate.
• Homeownersshouldperformfrequentvisualinspections
of the furnace for obvious signs of deterioration. The
furnace should be sound without sagging, cracks gaps,
etcaroundthebase.Thereturnairductconnection(s)is
secured and sealed to the furnace cabinet and terminates
outside the area containing the furnace. Any signs of
damage or loose connections should be repaired by a
qualified HVAC technician.
• Furnitureanddraperyshouldbearrangedsothatthe
supply air registers and return grilles are not obstructed.
VENTING SYSTEM
• Forproperandsafeoperation,thefurnaceneedsairfor
combustion and ventilation. Do Not block or obstruct
air openings on the furnace, or any air openings where
the furnace may be installed, including any surrounding
spaces.
• Direct vent furnaces pull combustion air from the
outdoors and vent combustion products back outside.
Combustion air coming from the outside needs to be
clean of chemicals that can cause corrosion, such as
pool chlorinating products.
• Ventpipemustslopeupwardsandbephysicallysound
without holes or corrosion. Any corroded section of vent
pipe must be replaced, and any obstruction or blockage
must be removed by a licensed HVAC technician.
• Fluepassageways,theventsystem,andtheburners
should be inspected and cleaned (if required) by a
licensed HVAC technician annually to ensure continued
safe operation.
1. Is the thermostat setting correct?
2. IstheOn/OFFswitch(insidetheblowercompartment)
turned on? See Figure3,(page8).
3. Is the circuit breaker tripped?
4. Is the gas turned on at the manual shutoff?
5. Is the filter dirty or clogged?
If the furnace still doesn’t operate, contact a licensed
HVAC technician.
MAINTENANCE INFORMATION
TROUBLESHOOTING
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