American Standard TMM5A0B24M21SAA Installer'S Manual Download

Page: 4 / 12

REMOVE BOTTOM COIL
PANEL OFF PLATE

INSTALL FRONT
COIL PANEL

Fig. 3-4 DIFFERENT AIR SUPPLY

3.2.3 CONFIGURATIONS

Fig.3-3 Space for frame mount

≥0"

Fig. 3-5 HEATER ELEMENTS INSTALLATION

ELECTRIC HEATER KITS

Bottom Return Conversion: Divert the return air from the factory
standard front return to a bottom return.Remove the cross brace
when converting cabinet to bottom return.

3.3 Duct Work

3.4 Condensate Drain

Field ductwork must comply with the National Fire Protection

Association NFPA 90A, NFPA 90B and any applicable local

ordinance.

WARNING

Do not, under any circumstances, connect return ductwork to any

other heat producing device such as fireplace insert, stove, etc.

Unauthorized use of such devices may result in fire, carbon

monoxide poisoning, explosion, personal injury or property

damage.

Sheet metal ductwork run in unconditioned spaces must be insulated

and covered with a vapor barrier. Fibrous ductwork may be used if

constructed and installed in accordance with SMACNA Construction

Standard on Fibrous Glass Ducts. Ductwork must comply with

National Fire Protection Association as tested by U/L Standard 181

for Class I Air Ducts. Check local codes for requirements on

ductwork and insulation.

• Duct system must be designed within the range of external static

pressure the unit is designed to operate against. It is important that

the system airflow be adequate. Make sure supply and return

ductwork, grills, special filters, accessories, etc. are accounted for in

total resistance. See airflow performance tables in this manual.

• Design the duct system in accordance with “ACCA” Manual “0”

Design for Residential Winter and Summer Air Conditioning and

Equipment Selection. Latest editions are available from: “ACCA” Air

Conditioning Contractors of America, 1513 16th Street, N.W.,

Washington, D.C. 20036. If duct system incorporates flexible air

duct, be sure pressure drop Information (straight length plus all

turns) shown in “ACCA” Manual “D” is accounted for in system.

• Supply plenum is attached to the 3/4” duct flanges supplied with

the unit.

IMPORTANT:

If an elbow is included in the plenum close to the unit,

it must not be smaller than the dimensions of the supply duct flange

on the unit.

• IMPORTANT: The front flange on the return duct if connected to

the blower casing must not be screwed into the area where the

power wiring is located. Drills or sharp screw points can damage

insulation on wires located inside unit.

The unit is supplied with primary and auxiliary condensate drains

that have 3/4” NPT connections. Both drains must be trapped

outside the unit and piped in accordance with applicable building

codes. Do not reduce the drain line size less than the connection

size on the drain pan. Condensate should be piped to an open drain

or to the outside. All drains must pitch downward away from the unit

a minimum of 1/4” per foot of line to ensure proper drainage.

Insulate the primary drain line to prevent sweating where dew point

temperatures may be met. (Insulation is optional depending on

climate and application needs.)

• Secure the supply and return ductwork to the unit flanges, using

proper fasteners for the type of duct used and tape the duct-to-unit

joint as required to prevent air leaks.

Important:

If cleanout Tee is used, standpipe must be sealed/capped.

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NOTES:
1: Use Copper Wire (75

Min) Only Between Disconnect Swicth And Unit .

2: To Be Wired In Accordance With NEC And Local Codes.
3: If Any Of The Original Wire ,As Supplied,Must Be Replaced.Use The Same

Or Equivalent Type Wire.

4: Connect R To R,G To G,Etc.See Outdoor Instruction For Details.
5: To Change Speed Tap,Move Blue Wire Desird Terminal.
6: See Airflow Tables For Tap Usage.
7:Factory Wires May Be Present,DO NOT USE.

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)/)86(/,1.

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&$3

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*1'

*5281'

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*1'

9ᨺ

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<(/1

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NOTES:
1: Use Copper Wire (75

Min) Only Between Disconnect Swicth And Unit .

2: To Be Wired In Accordance With NEC And Local Codes.
3: If Any Of The Original Wire ,As Supplied,Must Be Replaced.Use The Same

Or Equivalent Type Wire.

Top vicw of the indoor unit clearancc(including air duct).

20"

≥0"

≥24"

≥0"

Front of unit

AIRFLOW

7)0575$16)250(5

)/)86(/,1.

)0)$102725

*1'

&20

7)05

NOTES:
1: Use Copper Wire (75

Min) Only Between Disconnect Swicth And Unit .

2: To Be Wired In Accordance With NEC And Local Codes.
3: If Any Of The Original Wire ,As Supplied,Must Be Replaced.Use The Same

Or Equivalent Type Wire.

4: Connect R To R,G To G,Etc.See Outdoor Instruction For Details.
5: To Change Speed Tap,Move Green Wire Desird Terminal.
6: See Airflow Tables For Tap Usage.

<**1'