Nordyne SERIES M1B MAINTENANCE Homeowner Information, Installer Information, Periodic Cleaning

OPTIONAL ADD-ON AIR CONDITIONING Whether split system or single package, an energy-saving NORDYNE Air Conditioner is available that has been designed specifi cally 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).

MAINTENANCE

Homeowner Information

•On some closet installations, the return air opening to the furnace may be on the fl oor, in the door, in the side 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 38.

•Filters - At least twice each season (more often in dusty areas) remove and clean the air fi lters 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 extremely cold weather, ice may form on the furnace roof jack (Figure 39). 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 ineffi cient burner operation. If excessive ice has formed on the air inlet or exhaust portions of the roof jack, it must be carefully removed.

Installer Information

All furnaces need periodic service at the beginning of each heating season. Call your serviceman to:

•Remove the air circulator and clean all dust and lint from the unit with a stiff bristle brush.

•Inspect the combustion chamber blower compartment, fl ue collar and Roof Jack.

•Check the gas valve (if applicable) and fuel line connections for leaks.

•Make any adjustments necessary for good operation.

WARNING:

Use of furnace or air conditioning components that are not included in the certification of this appliance may create a hazard, invalidate the certification, and in many states, make installations illegal. Listed NORDYNE air conditioning components are specified on the furnace label.

Additional Oil Furnace Maintenance

In addition to the preceding, the following should be performed by a qualifi ed service contractor at least once each season for oil-fi red furnaces:

•Replace the oil nozzle with the type nozzle specifi ed for your furnace.

•Clean, adjust and replace if necessary the spark electrodes.

•Reset the nozzle/drawer assembly to factory specifi cations.

•Clean the inside of the furnace heat exchanger and replace the combustion liner if necessary.

•Clean or replace the oil fi lter element at the oil tank.

•Adjust the burner for top effi ciency and check to make sure all fi ttings are leak-tight.

Figure 38. Periodic Cleaning

Check for

Ice Here

Figure 39. Roof Jack

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