Sears EF08B1500A3, EF20N2600A2 Duct Connections, Non-Ducted Return Air Closet Installation

J Electric Furnace

Figure 2 Airflow Positions

UPFLOW POSITIONDOWNFLOW POSITION

FILLER

HEATER

BLOWER

Coil

supop.._

Subbase

\, HEA'_R

FIL_ER	\	/
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Non-Ducted Return Air Closet Installation

The cabinet can be installed in a closet with a false bottom to form a return air plenum, or mounted on an open platform inside the closet. Platform should be high enough to provide a free (open) area for adequate return airflow into the bottom of the cabinet. The open area can be on the front side or a combination of front and sides, providing there is clearance on the sides between cabi- net and closet. Refer to ACCA Manual D for sizing and free area recommendations.

NOTE: Local codes may limit application of systems without a ducted return to single story dwellings.

Horizontal Left and Right Installations

No Coil

If a coil is not being installed, the cabinet can be placed on either

side for horizontal airflow as shipped. Refer to instructions with electric heat for instructions on horizontal applications.

With Coil

All units must have the horizontal drain pan kit insta!led for either

left or right hand applications. For installation of the drain pan, re- fer to the installation instructions included with the horizontal drain

pan kit, and the following.

CAUTION

A field-fabricated auxiliary drain pan, with a seperate drain is REQUIRED for all installations over a finished living space or in any area that may be damaged by overflow from the main drain pan. In some localities,

local codes require an auxiliary drain pan for ANY hori- zontal installation.

Installation Instructions j

Figure 3 Airflow Positions

HORIZONTAL LEFT POSITION

,,=,

m

HORIZONTAL RIGHT POSITION

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Drain Pan Installation

1, Position side of coil drain pan into horizontal drain pan trough on deep end of pan.

2.Install the coil support bracket on left or right side of the cabinet.

3.Install coil drip flanges on the left or right side of the coil, (same side as horizontal drain pan).

5.Install drain plugs as required in back side of horizontal drain pan. Install plugs in A coil drains to prevent air leaks.

5.Slide coil assembly into cabinet being careful not to tear in- sulation.

NOTE: Be sure A coil pan fits into the support bracket on the back side of the cabinet and that pan is under the flange of the bracket on the right side. The brackets fit over the top edge of the A coil drain pan to hold it when it'sput into the horizontal position.

6.Referto Restrictor Orifice Selection and change restrictor if necessary, then install coil access panel.

Cabinet can now be placed on it'sside for horizontal airflow.

Suspended Cabinet Installation

1.If the cabinet cannot be supported on a frame or shelf, it may be suspended.

2.Use metal strapping or threaded rod with angle iron sup- ports under the auxiliary drain pan to suspend cabinet. These supports MUST run parallel with the length of the cabinet (Figure 5 ).

3.Ensure that there is adequate room to remove service and access panels after installing supporting brackets.

4.Place Styrofoam blocks in auxiliary drain pan to support cabinet.

Duct Connections

Supply Duct

Supply duct must be attached to the outside of flange on outlet end of unit. Flexible connectors may be used if desired. Maintain

clearances from supply duct to combustibles when heaters are installed. See Figure 1 and unit rating plate.

Return Duct

Return duct should be attached to bottom of unit using sheet met- al screws or other fasteners.

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