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Carrier installation instructions Roof Curb - 48AJ,AK051 and 060 Units

Models: 48AJ

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Fig. 3 — Roof Curb — 48AJ,AK051 and 060 Units

NOTES:

1.UNLESS OTHERWISE SPECIFIED, ALL DIMENSIONS ARE TO OUTSIDE OF PART.

2.ROOF CURB ACCESSORY CRRFCURB005A00 IS SHIPPED DIS- ASSEMBLED.

3.ALL ROOFCURB PARTS ARE TO BE 14 GA. GALVANIZED STEEL.

4.DIMENSIONS IN [ ] ARE IN MILLIMETERS. ALL OTHER DIMEN- SIONS ARE IN INCHES.

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Fig. 3 — Roof Curb — 48AJ,AK051 and 060 Units

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Carrier installation instructions Roof Curb - 48AJ,AK051 and 060 Units

Contents

CONTENTS Installation InstructionsSAFETY CONSIDERATIONS INSTALLATION Step 1 - Provide Unit SupportStep 4 - Make Unit Duct Connections Fig. 1 - Roof Curb - 48AJ,AK020-035Units Fig. 2 - Roof Curb - 48AJ,AK036-050Units Fig. 3 - Roof Curb - 48AJ,AK051 and 060 Units a48-8235 Fig. 4 - Base Unit Dimensions - 48AJ,AK020-035a48-8236 Fig. 5 - Base Unit Dimensions - 48AJ,AK036-050Fig. 6 - Base Unit Dimensions - 48AJ,AK051 and A48-8380 Fig. 7 - Base Unit Dimensions - 48AW,AY020-035Fig. 8 - Base Unit Dimensions - 48AW,AY036-050 Fig. 9 - Base Unit Dimensions - 48AW,AY051 and GRAVITY, OPERATING AND CORNER WEIGHTS, SEE FIGUREFOR CENTERS OF a48-8240a50-8102 Table 1 - Physical Data - 48AJ,AK,AW,AY Units UNIT 48AJ,AK,AW,AY UNIT 48AJ,AK,AW,AY CAUTION - NOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE WHEN RIGGINGFig. 11 - Rigging Information a48-8246Table 3 - Option and Accessory Weights Table 2 - Unit Operating WeightsTable 4 - Constant Volume Fan Motor Weights Table 5 - Variable Volume Fan Motor WeightsFig. 12 - Air Distribution - Thru-the-Bottom Table 6 - Evaporator Fan Motor DataFig. 13 - Air Distribution - Thru-the-Side a48-8241Step 5 - Install Flue Hood Step 8 - Make Electrical Connections Fig. 19 - Field Power Wiring ConnectionsFig. 18 - Field Gas Piping Table 7 - 48A Series Staged Gas ControlUNIT UNIT 46.2 UNIT UNIT 30.8 46.2 UNIT 1.Remove cap from red 208 v wire Fig. 22 - Space Temperature Averaging Wiring Fig. 20 - Field Control Thermostat WiringFig. 21 - Space Temperature Sensor Wiring Table 10 - Color Code Recommendations Table 9 - CCN Connection Approved Shield CableFig. 23 - Adding Seal Strip to Top of Hood Sides Fig. 24 - Economizer Hood Assemblya48-8498 Right Side/Center Economizer Hood ShownFig. 26 - Adding Seal Strip to Back of Hood Top to Filter Track AssemblyMounting Flange Fig. 27 - Adding Foam Strip to Cross MemberStep 11 - Route VAV Static Pressure Sensors Fig. 33 - Pressure Transducer Locations Step 13 - Field Modificationsa48-8245 Fig. 34 - Side Return Air Conversion31.25” INSIDE