6
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:
BLOWER & FILTER
• Never operate the furnace without a filter in place. Dust and lint
can build up on internal components, resulting in loss of efficiency,
equipment damage, and possible fire.
• Keep air filters cleaned. Filters should be changed or 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
• This furnace produces liquid condensate which is slightly 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.
FURNACE & AIR DUCTS
• Homeowners should perform frequent visual inspections of the
furnace for obvious signs of deterioration. The furnace should be
sound without sagging, cracks gaps, etc around the base. The
return air duct connection(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.
• Furniture and drapery should be arranged so that the supply air
registers and return grilles are not obstructed.
VENTING SYSTEM
• For proper and safe operation, the furnace needs air for 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.
• Vent pipe must slope upwards and be physically sound 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.
• Flue passageways, the vent system, and the burners should be
inspected and cleaned (if required) by a licensed HVAC technician
annually to ensure continued safe operation.
If the furnace fails to operate check the following:
1. Is the thermostat setting correct?
2. Is the On / OFF switch (inside the blower compartment) turned
on? See
Figure 3, (page 8)
.
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
