Sears EF12F1900A2, EF16J2200A2, EF08B1500A3, EF20N2600A2 User Manual

INSTALLATION INSTRUCTIONS

Models

EF08B1500A3 EF12F1900A2 EF16J2200A2 EF20N2600A2

With

AMF001NHA

Use ONLY factor' listed electric heaters.

ELECTRIC

FURNACE

Safety Labeling and Signal Words

Danger, Warning and Caution

The signal words DANGER, WARNING and CAUTION

are used to identify levels of hazard seriousness. The signal word DANGER is only used on product labels to

signify an immediate hazard. The signal words WARN- ING and CAUTION will be used on product labels and

throughout this manual and other manuals that may ap-

ply to the product. DANGER - Immediate hazards which WILL result in se- vere personal injury or death,

WARNING - Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION - Hazards or unsafe practices which COULD result in minor personal injury or product or property

damage.

Accessory No Heat Kit

Safety Labeling and Signal Words Cov

General Information / Installation ............ 2

Vertical Installations ........................ 2

Horizontal Installations ..................... 3

Condensate Drain .......................... 5

Refrigerant Orifice and Lines ................ 5

Electrical Wiring ............................ 6

Checks and Maintenance ................... 7

Blower Performance ........................ 8

Signal Words in Manuals

The signal word WARNING is used throughout this manual in the following manner:

The signal word CAUTION is used throughout this manual in the following manner:

CAUTION

Product Labeling

Signal words are used in combination with colors and/or pictures on product labels.

Printed in U.S.A. 442 01 2204 01

Aug 2001

_ Installation Instructions Electric Furnace]

Figure 1 Dimensions and Clearances

14-3/8 '' (EF08) 17-7/8 '' (EF12)

21-1/2" (EF16) 25-1/8" (EF20)

LowVoltage PilotHole

CLEARANCES

Alternate

LineVoltage Pilot Hole

DrainConnections For Horizontal

Main3/4 Fpt Overflow 3/4 FPT

Main/OverflowDrains

3/4FPT

LineVoltage

Pilot Hole

45" (EF08-12)

54" (EF16-20)

Suction-

Liquid

21 1/2"

NO HEATERS

All Sides .................................. O"

From Supply Duct .......................... O"

Recommended Service From Front .......... 20"

(Service for blower, filter if installed)

WITH HEATERS

All Sides .................................. O"

From First Three

Feet of Supply Duct to Combustibles ........ 1"

From Duct after Three Feet ................. O"

Recommended Service From Front .......... 20"

(Service for blower, filter, heaters if installed)

FilterDoor

16-3/8'' (EF08)

19-7/e'' (EF12) 23-1/2'' (EF16) 27-1/e'' (EF20)

38-20-17

General Information

Installation or repairs made by unqualified persons can result in hazards to you and others. Installation MUST conform with local building codes and with the

National Electrical Code NFPA70 current edition.

The information contained in this manual is intended

for use by a qualified service technician familiar with safety procedures and equipped with the proper tools

and test instruments.

Failure to carefully read and follow all instructions in

this manual can result in equipment malfunction,

property damage, personal injury and/or death.

THESE INSTRUCTIONS ASSUME THAT A TYPICAL INSTAL-

LATION WILL INCLUDE ELECTRIC HEAT AND A COIL. BA-

SIC INSTRUCTIONS ARE PROVIDED BUT THE INSTALLER WILL HAVE TO REFER TO INSTRUCTIONS FOR OTHER AC-

CESSORIES FOR MORE COMPLETE INFORMATION.

The blower cabinet may be used as an electric furnace or for cool-

ing or heat pump operation with orwithout electric heat. The cabi- net can be installed in an upfiow, downflow or horizontal position

(Figure 2). Horizontal installations require a horizontal kit for prop-

Fire Hazard

When heaters are installed maintain clear- ances from combustible materials as speci-

fied on unit rating plate.

Failure to do so can result in fire, property

damage, personal injury or death.

er coil support and drain pan. Downflow installations require a subbase kit which provides proper clearances and a support to install a coil.These units are not shipped with air filters installed.

Filter must be field supplied, either washable or disposal type.

Washable filters are available as an accessory.

Location

Select the best position wi_ich suits timeinstallation site conditions. The location should provide adequate structural support, space in the front ofthe unit for service access, clearance for return air and

supply duct connections, space for refrigerant piping connections and condensate drain line connections, and clearance forfilter re-

moval. NOTE: Internal filter can be accessed from separate filter door. If

the filter can NOT be easily accessed, a remote filter is recom- mended. Refer to ACCA Manual D for remote filter sizing.

Ifthe unit is located in an area of high humidity, nuisance sweating of casing may occur. On these installations a wrap of 2"fiberglass insulation with a vapor barrier should be used.

Upflow Installations

The unit is ready to install in the upflow position without modifica- tions.

The unit MUST be supported on the bottom ONLY and set on a supporting frame or shelf. Use screws through the bottom to an-

chor to supporting frame.

Downflow Installations

Refer to instructions with Subbase Kit.

_J 442 01 2204 01

JElectric Furnace Installation Instructions j

Figure 2 Airflow Positions

UPFLOW POSITION

HEATER

BLOWER

DOWNFLOW POSITION

FILLER

Coil

supop.._

Subbase

HEA'_R

\ /

FIL_ER

38-20-19

Non-Ducted Return Air Closet Installation

The cabinet can be installed in acloset 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

Ifa 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 ofthe drain pan, re-

fer to the installation instructions included with the horizontal drain pan kit, and the following.

Figure 3 Airflow Positions

HORIZONTAL LEFT POSITION

,,=,

HORIZONTAL RIGHT POSITION

38-20-19

Drain Pan Installation

Position side of coil drain pan into horizontal drain pan

trough on deep end of pan.

Install the coil support bracket on left or right side of the

cabinet.

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

Install drain plugs as required in back side of horizontal

drain pan. Install plugs in A coil drains to prevent air leaks.

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

NOTE: Be sure Acoil 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's put 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's side 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

CAUTION

A field-fabricated auxiliary drain pan, with a seperate drain is REQUIRED for all installations over a finished

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.

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.

442 01 2204 01 3[._J

Return Duct

Return duct should be attached to bottom of unit using sheet met-

al screws or other fasteners.

I Installation Instructions

Electric Furnace I

Figure

Coil Access Panel

4 / Horizontal Drain Pan

Coil Support Bracket

Horizontal Drain Pan (Left Hand Airflow)

Drip Flanges (Left Hand Airflow)

(Right Hand Air_)

il Support Bracket

Coil Support Bracket (Left Hand Airflow)

Drip Flanges (Right Hand Airflow)

Figure 5 Horizontal Installation

Field-Fabricated Drain Pan

Supports MUST run parallel with blower cabinet =-_

Horizontal Drain Pan (Right Hand Airflow)

38-20-06

Filter Installation

Filters must be field supplied. The blower cabinet is set up for an

internal filter or a remote filter grille or other means may be pro- vided. Refer to ACCA Manual D for remote filter sizing.

To install an internal filter, remove screw securing filter door and slide filter into unit. Some filters are marked for airflow direction,

make sure arrow points towards blower if marked. Washable fil- ters are offered as an accessory. Disposable filter sizes are listed

in Filter Static Pressure Drop Table.

Condensate Drain

The unit is provided with 3/4" National Pipe Thread (NPT) con- densate drains. (Figure 1). Any drain can be used as a primary or

secondary drain. Condensate drain lines should be insta!led in a manner that does not obstruct access to the filter.

There is a secondary drain fitting supplied with the unit that will convert any of the primary condensate drain connections into a secondary drain connection. This fitting should be insta!led in any

of the primary drain connections to convert it to a secondary drain.

1. Connect the drain lines to the appropriate drain fittings. 3/4" PVC or other type of drain line may be used. The drain line

must not be smaller than the drain fitting.

2. Insta!l a trap in the drain line below the bottom of the drain

pan and pitch the drain lines down from the coil at least I/4" per foot of run. Horizontal runs over 15 feet long must also

have an anti-siphon air vent (stand pipe), installed ahead

of the horizontal run. An extremely long horizontal run may

require an oversized drain line to eliminate air trapping.

_J 442 01 2204 01

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