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Whether split system or single package, an energy-
saving NORDYNE Air Conditioner is available that has
been designed specifically for manufactured housing
applications and can best handle your home comfort
needs. Ask your dealer or contractor about NORDYNE
add-on central air conditioning systems.
Single package unit includes cooling coils, compressor,
and vertical discharge fan. This type of unit connects with
the existing home air duct system (an optional close-off
damper is required with the furnace).
Split system unit with vertical discharge for quiet operation
connects with NORDYNE cooling coil furnace (optional
coil cavity required with “A” model furnaces).
• Onsomeclosetinstallations,thereturnairopeningto
thefurnacemaybeontheoor,inthedoor,intheside
wall of the closet, or any combination of these. The
upper grille on the front of the furnace admits return
air to the blower. Return air must be provided back to
the circulating blower in order to provide air distribution.
See Figure 36.
• Filters-Atleasttwiceeachseason(moreoftenindusty
areas) remove and clean the air filters with a vacuum
or with warm water and soap. Reinstall when dry. Also
clean dust and lint around furnace and in the furnace
vestibule.
• During extremelycold weather, ice may form onthe
furnace roof jack (Figure 37). Small amounts of ice
forming on the roof jack will present no problems to
proper furnace operation. Excessive ice formation could
restrict the combustion air supply to the burner, causing
inefficient burner operation. If excessive ice has formed
on the air inlet or exhaust portions of the roof jack, it
must be carefully removed.
All furnaces need periodic service at the beginning of each
heating season. Call your qualified service contractor for
these items:
• Remove the air circulatorand clean all dustand lint
from the unit with a stiff bristle brush.
• Inspectthecombustionchamberblowercompartment,
uecollarandRoofJack.
• Check the gas valve (if applicable) and fuel line
connections for leaks.
• Makeanyadjustmentsnecessaryforgoodoperation.
Additional Oil Furnace Maintenance
In addition to the preceding, the following should be
performed by a qualified service contractor at least once
each season for oil-fired furnaces:
• Replacetheoilnozzlewiththetypenozzlespecied
for your furnace.
• Clean, adjust and replace if necessary the spark
electrodes.
•Reset the nozzle/drawer assembly to factory
specifications.
• Cleanthe insideof the furnace heatexchangerand
replace the combustion liner if necessary.
• Cleanorreplacetheoillterelementattheoiltank.
• Adjusttheburnerfortopefciencyandchecktomake
sure all fittings are leak-tight.
Figure 36
Figure 36.
Figure 37
Figure 37.
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