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Carrier 48AJ installation instructions Side Return Air Conversion, a48-8245, 31.25”, Inside

Models: 48AJ

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31.25”

97.78” (020-050), 150.47” (051 AND 060) INSIDE DIMENSION

RA	31.25”
	INSIDE

a48-8245

Fig. 34 — Side Return Air Conversion

Copyright 2009 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480067-01

Printed in U.S.A.

Form 48A-7SI

Pg 36

8-09

Replaces: 48A-5SI

Image 36

Carrier 48AJ installation instructions Side Return Air Conversion, a48-8245, 31.25”, Inside

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. 20 - Field Control Thermostat Wiring Fig. 21 - Space Temperature Sensor 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