Clearances And Accessibility - Maytag Amana MEC96 Series Installation Instructions Manual

Two-stage, fsp category iv direct or non direct vent air furnace

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Table Of Contents

Table of Contents

Enlarged version

larger than the base of the furnace. Refer to the

Horizontal Applications and Considerations for

leveling of horizontal furnaces.

•

Ensure upflow or horizontal furnaces are not

installed directly on carpeting, or any other

combustible material. The only combustible

material allowed is wood.

•

Exposure to contaminated combustion air will

result in safety and performance-related problems.

Do not install the furnace where the combustion

air is exposed to the following substances:

permanent wave solutions

carbon tetrachloride

deicing salts or chemicals

cleaning solutions (such as perchloroethylene)

paint removers

cements and glues

chlorinated waxes or cleaners

water softening chemicals

halogen type refrigerants

chlorine-based swimming pool chemicals

printing inks

varnishes

hydrochloric acid

antistatic fabric softeners for clothes dryers

•

Seal off a non-direct vent furnace if it is installed

near an area frequently contaminated by any of

the above substances. This protects the non-direct

vent furnace from airborne contaminants. To

ensure that the enclosed non-direct vent furnace

has an adequate supply of combustion air, vent

from a nearby uncontaminated room or from

outdoors. Refer to the Combustion and Ventilation

Air Requirements for details.

•

If the furnace is used in connection with a cooling

coil unit, install the furnace upstream or in

parallel with the cooling coil unit. Premature heat

exchanger failure will result if the cooling unit is

placed ahead of the furnace.

For vertical (upflow or downflow) applications,

the minimum cooling coil width shall not be less

than furnace width minus 1". Additionally, a

coil installed above an upflow furnace or under a

counterflow furnace may be the same width as the

furnace or may be one size larger than the furnace.

Example: a "C" width coil may be installed with a

"B" width furnace.

For upflow applications, the front of the coil and

furnace must face the same direction.

•

If the furnace is installed in a residential garage,

position the furnace so that the burners and

ignition source are located not less than 18 inches

(457 mm) above the floor. Protect the furnace

from physical damage by vehicles.

•

If the furnace is installed horizontally, ensure the

access doors are not on the "up/top" or "down/

bottom" side of the furnace.

•

Do not connect this furnace to a chimney flue that

serves a separate appliance designed to burn solid

fuel.

•

On Counterflow Installations, the air conditioning

coil must be downstream on the supply (positive)

side of the furnace heat exchanger.

•

Counterflow Installation over a noncombustible

floor. Before setting the furnace over the plenum

opening, ensure the surface around the opening

is smooth and level. A tight seal should be made

between the furnace base and floor by using a

silicone rubber caulking compound or cement

grout.

•

Counterflow Installation over a combustible

floor. If installation over a combustible floor

becomes necessary, use an accessory subbase (see

Specification Sheet applicable for your model for

details.) A special accessory subbase must be

used for upright counterflow unit installations over

any combustible material including wood. Refer

to subbase instructions for installation details.

Follow the instructions with the subbase for proper

installation. Do not install the furnace directly on

carpeting, tile, or other combustible material other

than wood flooring.

(NOTE: The subbase will not be required if an air

conditioning coil is installed between the supply

air opening on the furnace and the floor.)