Lennox T?CLASS TAA SERIES Installation Instructions Manual
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Lennox T?CLASS TAA SERIES Installation Instructions Manual

Lennox T?CLASS TAA SERIES Installation Instructions Manual

Air handlers 6 to 20 tons
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RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
CAUTION
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result in
personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
WARNING
Electric Shock Hazard.
Can cause injury or death.
Foil-faced insulation has conductive characteristics sim-
ilar to metal. Be sure there are no electrical connections
within a ½" of the insulation. If the foil-faced insulation
comes in contact with electrical voltage, the foil could
provide a path for current to pass through to the outer
metal cabinet. While the current produced may not be
enough to trip existing electrical safety devices (e.g.
fuses or circuit breakers), the current can be enough to
cause an electric shock hazard that could cause person-
al injury or death.
08/
*2P08*
INSTALLATION
INSTRUCTIONS
T−CLASSE TAA SERIES
AIR HANDLERS
6 TO 20 TONS
506149−01
04/11
Supersedes 8/09

Table of Contents

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General

The TAA Series air handler units are designed for
installation with a matched remote outdoor unit that is
charged with
HFC−410A
field−installed electric heat. The air handler units are for
indoor installation only and are designed for upflow or
horizontal applications.

Shipping and Packing List

Package contains the following:
1
Assembled blower coil unit
8
Supply and return air flanges which are stored inside
unit and are listed in table 2, on page 9.
1
Bag assembly that consists of the following:
S
One installation instruction
S
Two wiring diagrams (unit wiring and thermostat
connections)
S
Six plastic grommets (various sizes) for line set
knockouts.
Check package contents for shipping damage; if found,
immediately report damage to the last carrier.
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refrigerant
506149−01
*P506149-01*
Litho U.S.A.
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and
optional

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Summary of Contents for Lennox T?CLASS TAA SERIES

  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS T−CLASSE TAA SERIES AIR HANDLERS 6 TO 20 TONS 506149−01 Litho U.S.A. 04/11 Supersedes 8/09 Table of Contents RETAIN THESE INSTRUCTIONS General ........FOR FUTURE REFERENCE Shipping and Packing List .

  • Page 2: Taa072 And Taa090 Unit Dimensions

    TAA072 and TAA090 Unit Dimensions − Inches (mm) CORNER WEIGHTS CENTER OF GRAVITY Model No. lbs. lbs. lbs. lbs. TAA072 25−1/2 25−1/2 TAA090 25−1/2 25−1/2 UP−FLOW POSITION SHOWN 51−1/4 (1302) CONTROL BOX (Alternate Location) POWER ENTRY HOLES 29−1/2 (749) SUPPLY AIR 18−5/8 NOTE: (473)

  • Page 3: Taa120 And Taa150 Unit Dimensions

    TAA120 and TAA150 Dimensions − Inches (mm) CORNER WEIGHTS CENTER OF GRAVITY Model No. lbs. lbs. lbs. lbs. TAA120−150 33−1/2 24−1/2 UP−FLOW POSITION SHOWN 67−1/4 (1708) CONTROL BOX (Alternate Location) POWER ENTRY 29−1/2 HOLES (749) SUPPLY AIR 18−5/8 OPENING (473) CONTROL 1−3/8 (35)

  • Page 4: Taa180 And Taa240 Unit Dimensions

    TAA 180 and TAA 240 Unit Dimensions − Inches (mm) CORNER WEIGHTS CENTER OF GRAVITY Model No. lbs. lbs. lbs. lbs. TAA180−240 1321 25−3/4 UP−FLOW POSITION SHOWN 96−1/4 (2445) CONTROL BOX (Alternate Location) POWER ENTRY 29−1/2 HOLES SUPPLY AIR (749) 18−5/8 OPENING (473)

  • Page 5: Unit Parts Arrangement

    Unit Parts Arrangement All TAA Series HORIZONTAL POSITION COIL SHOWN BLOWER MOTOR ADJUSTABLE PULLEY LIQUID LINES VAPOR LINES BLOWER BLOWER BELT CONTROL BOX CONDENSATE DRAIN POSITION FOR UPFLOW)) BELT TENSIONER 072−090−120−150 MODELS CONDENSATE DRAIN HORIZONTAL POSITION COIL BLOWER MOTOR SHOWN ADJUSTABLE PULLEY LIQUID LINES VAPOR LINES...

  • Page 6: Unit Control Box Components Arrangement

    Unit Control Box Components Arrangement All TAA Series CONTACTOR THREE−PHASE THERMAL BLOWER GROUND CONTROL PANEL OVERLOAD RELAY (S42) (K3−1) RELAY (K43) TERMINAL STRIP (TB1) M VOLTAGE OVERLOAD WIRING Y, G, AND J VOLTAGE WIRING Typical Installation Support Method TAA AIR HANDLER (HORIZONTAL POSITION) SUPPORT RODS (4) ELECTRIC or HOT...

  • Page 7: Requirements

    −090S4D, −120S4D, 5/8" (2) 7/8 (2) instructions and local municipal building codes, installation and −150S4D of Lennox air handler units (with or without optional electric −180S4D, and heat), shall conform with the following National Fire 5/8" (2) 1−1/8" (2) −240S4D Protection Association (NFPA) standards: For single−stage applications, pipe the upper and lower...

  • Page 8: Installing Condensate Drain

    check to make sure that no debris has fallen into the drain Installing Condensate Drain pan during installation that may plug up the drain opening. This sections provides information concerning drain pan CONDENSATE DRAIN INSTALLATION orientation and condensate drain installation Connect main condensate drain (one inch N.P.T.) and DRAIN PAN ORIENTATION route downward to an open drain or sump.
  • Page 9 EITHER A ONE INCH P− OR J−TRAPS (P−TRAP ARE REQUIRED ON ALL DRAIN ABOVE LINES. TRAPS MUST BE DEEP ENOUGH TO OFFSET MAXIMUM STATIC INSTALL OPTIONAL FLOAT SWITCH. WIRE FINISHED DIFFERENCES (GENERALLY, TWO INCHES (51MM). LOW VOLTAGE TO SHUT DOWN SPACE? COMPRESSOR PER INSTRUCTIONS.

  • Page 10: Duct Connections

    Duct Connections SIDE RETURN AIR COVER PLATE INSTALLATION OF FLANGES RELOCATION ALIGN PROVIDED FLANGES WITH PRE−DRILLED HOLES IN UNIT IS SHIPPED FOR INSTALLATION IN AN UPFLOW OR HORIZONTAL BOTH RETURN AND SUPPLY AIR LOCATIONS AND SECURE APPLICATION WITH BOTTOM (OR END) RETURN AIR. IF UNIT WILL BE USED IN WITH FIELD−PROVIDED SHEET METAL SCREWS (#10−16 X 5/8").

  • Page 11: Sealing The Unit

    NATIONAL AND LOCAL CODE RESTRICTIONS Sealing the Unit Wiring must conform to the current National Electric Code ANSI/NFPA No. 70, or Canadian Electric Code Part I, CSA Seal the unit so that warm air is not allowed into the Standard C22.1, and local building codes. Refer to cabinet.

  • Page 12: Blower Motor Belt Tensioning Adjustment

    Figure 6. Typical Control Wiring used with TSA and TPA Outdoor Units. Blower Motor Belt Tensioning Adjustment PLACE BELT OVER ALL THREE PULLEYS. BELT TENSIONER USING A 15/16" WRENCH ON THE TENSIONER BODY NUT, APPLY FORCE UNTIL MARKS ALIGN AS SHOWN. WHILE HOLDING THE TENSIONER IN THIS POSITION, TIGHTEN THE MOUNTING BOLT TO 23 FT−LBS USING A...

  • Page 13: Pulley Alignment

    Pulley Alignment AFTER ANY PULLEY ADJUSTMENT OR CHANGE OUT, PULLEYS SHOULD BE ALIGNED WITH THE TENSIONER AS SHOWN. ALIGNED TENSIONER BELT MOTOR BLOWER PULLEY PULLEY NOT ALIGNED Figure 8. Typical Pulley Alignment Air Volume Adjustment RUN THE BLOWER WITHOUT A COOLING DEMAND. MEASURE THE STATIC PRESSURE EXTERNAL TO THE UNIT.

  • Page 14: Blower Data

    NOTE − Using total air volume and system static pressure requirements, determine from blower performance tables Rev/min and motor horsepower required. Maximum usable horsepower of motors furnished by Lennox are shown. If motors of comparable horsepower are used, be sure to keep within the service factor limitations outlined on the motor nameplate.

  • Page 15: Blower Drive Components

    Blower Drive Components BLOWER DRIVE COMPONENTS, 60 HZ Unit Static Adjustable Sheave Fixed Sheave Belt Bushing OEM No Manuf No OEM No Manuf No OEM No Manuf No OEM No Manuf No OEM No Dimensions TAA072 79J0301 1VP40 X 7/8 49K4101 BK85 X 1 100245−25...

  • Page 16: Blower Performance

    Blower Performance TA 072 BLOWER PERFORMANCE STATIC PRESSURE EXTERNAL TO UNIT Inches Water Gauge Volume 1900 0.57 0.66 0.74 0.81 0.88 0.94 1.01 1.07 2000 0.59 0.69 0.77 0.84 0.91 0.98 1.05 1.11 2100 0.62 0.72 0.88 0.95 1.02 1.09 1.15 2200 0.65...
  • Page 17 STATIC PRESSURE EXTERNAL TO UNIT Inches Water Gauge Volume 2400 1.44 1.51 1.59 1.67 1.77 1006 1.86 1033 1.96 2500 1.57 1.65 1.74 1.84 1013 1.94 1039 2.04 2600 1.56 1.64 1.72 1.82 1.92 1019 2.02 1045 2.12 2700 1.62 1.79 1.89 1000...
  • Page 18 TA 150 BLOWER PERFORMANCE STATIC PRESSURE EXTERNAL TO UNIT Inches Water Gauge Volume 4000 1.26 1.39 1.45 1.52 1.65 1.76 1.87 1.98 4200 1.42 1.52 1.57 1.69 1.82 1.92 2.02 2.13 4400 1.57 1.63 1.73 1.87 1.99 2.08 2.18 2.28 4600 1.79 1.93...
  • Page 19 STATIC PRESSURE EXTERNAL TO UNIT Inches Water Gauge Volume 4800 2.33 2.47 2.69 2.94 3.18 3.38 3.58 5000 2.43 2.59 2.81 3.07 3.32 3.53 3.75 5200 2.54 2.71 2.95 3.22 3.48 3.93 5400 2.66 2.85 3.09 3.37 3.64 3.88 4.12 5600 2.79 2.99...

  • Page 20: Repairing Or Replacing Cabinet Insulation

    Fiberglass wool may also cause respiratory, skin, and Optional Accessories eye irritation. Refer to the Lennox TAA Series Engineering Handbook for To reduce exposure to this substance or for further the latest available accessories for this unit. information, consult material safety data sheets...

This manual is also suitable for:

Taa072Taa090Taa120Taa150Taa180Taa240

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