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Carrier installation instructions Roof Curb - 48AJ,AK036-050Units

Models: 48AJ

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Fig. 2 — Roof Curb — 48AJ,AK036-050 Units

NOTES:

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

2.ROOF CURB ACCESSORY CRRFCURB005A00 IS SHIPPED DISASSEMBLED.

3.ALL ROOF CURB PARTS ARE TO BE 14 GA. GALVANIZED STEEL.

4.UNITS WITH ELECTRIC HEAT MUST BE INSTALLED WITH A 90° ELBOW ON THE SUPPLY DUCT PRIOR TO ANY SUPPLY TAKE OFFS OR BRANCHES.

5.DIMENSIONS IN [ ] ARE IN MILLIMETERS. ALL OTHER DIMENSIONS ARE IN INCHES.

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Fig. 2 — Roof Curb — 48AJ,AK036-050 Units

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Carrier installation instructions Roof Curb - 48AJ,AK036-050Units

Contents

Installation Instructions CONTENTSSAFETY 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 Fig. 4 - Base Unit Dimensions - 48AJ,AK020-035 a48-8235Fig. 5 - Base Unit Dimensions - 48AJ,AK036-050 a48-8236Fig. 6 - Base Unit Dimensions - 48AJ,AK051 and Fig. 7 - Base Unit Dimensions - 48AW,AY020-035 A48-8380Fig. 8 - Base Unit Dimensions - 48AW,AY036-050 GRAVITY, OPERATING AND CORNER WEIGHTS, SEE FIGURE Fig. 9 - Base Unit Dimensions - 48AW,AY051 andFOR CENTERS OF a48-8240a50-8102 Table 1 - Physical Data - 48AJ,AK,AW,AY Units UNIT 48AJ,AK,AW,AY UNIT 48AJ,AK,AW,AY ALL PANELS MUST BE IN PLACE WHEN RIGGING CAUTION - NOTICE TO RIGGERSFig. 11 - Rigging Information a48-8246Table 2 - Unit Operating Weights Table 3 - Option and Accessory WeightsTable 4 - Constant Volume Fan Motor Weights Table 5 - Variable Volume Fan Motor WeightsTable 6 - Evaporator Fan Motor Data Fig. 12 - Air Distribution - Thru-the-BottomFig. 13 - Air Distribution - Thru-the-Side a48-8241Step 5 - Install Flue Hood Fig. 19 - Field Power Wiring Connections Step 8 - Make Electrical 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. 21 - Space Temperature Sensor Wiring Fig. 20 - Field Control Thermostat WiringFig. 22 - Space Temperature Averaging Wiring Table 9 - CCN Connection Approved Shield Cable Table 10 - Color Code RecommendationsFig. 24 - Economizer Hood Assembly Fig. 23 - Adding Seal Strip to Top of Hood Sidesa48-8498 Right Side/Center Economizer Hood Shownto Filter Track Assembly Fig. 26 - Adding Seal Strip to Back of Hood TopMounting Flange Fig. 27 - Adding Foam Strip to Cross MemberStep 11 - Route VAV Static Pressure Sensors Step 13 - Field Modifications Fig. 33 - Pressure Transducer LocationsFig. 34 - Side Return Air Conversion a48-824531.25” INSIDE