Carrier SINGLE PACKAGE ROOFTOP 48HC Installation Instructions Manual

Also see for 48TC*D: Service and maintenance instructions Installation instructions

14A-B0.25” (6)B-C0.5” (12)A-C0.5” (12)MAXIMUM ALLOWABLEDIFFERENCE IN. (MM)ABCC10628Fig. 9 -- Unit Leveling TolerancesStep 5 — Field Fabricate DuctworkCabinet return-air static pressure (a negative condition)shall not exceed 0.5 in. wg (87 Pa) with economizer orwithout economizer.For vertical ducted applications, secure all ducts to roof curband building structure. Do not connect ductwork to unit.Fabricate supply ductwork so that the cross sectionaldimensions are equal to or greater than the unit supplyduct opening dimensions for the first 18 in. (458 mm) ofduct length from the unit basepan.Insulate and weatherproof all external ductwork, joints,and roof openings with counter flashing and mastic inaccordance with applicable codes.Ducts passing through unconditioned spaces must beinsulated and covered with a vapor barrier.If a plenum return is used on a vertical unit, the returnshould be ducted through the roof deck to comply withapplicable fire codes.A minimum clearance is not required around ductwork.PROPERTY DAMAGE HAZARDFailure to follow this caution may result in damageto roofing materials.Membrane roofs can be cut by sharp sheet metaledges. Be careful when placing any sheet metal partson such roof.CAUTION!Step 6 — Rig and Place UnitKeep unit upright and do not drop. Spreader bars are notrequired if top crating is left on unit. Rollers may be usedto move unit across a roof. Level by using unit frame as areference. See Table 1 (on page 9) and Fig. 10 foradditional information.Lifting holes are provided in base rails as shown inFig. 10. Refer to rigging instructions on unit.UNIT DAMAGE HAZARDFailure to follow this caution may result inequipment damage.All panels must be in place when rigging. Unit is notdesigned for handling by fork truck when packagingis removed.CAUTION!Before setting the unit onto the curb, recheck gasketing oncurb."B""C""A""914-1371"(36"-54")DETAIL ASEE DETAIL APLACE ALL SEAL STRIPIN PLACE BEFORE PLACINGUNIT ON ROOF CURB.DUCT ENDC09107UNIT MAX WEIGHT DIMENSIONSA B CLB KG IN MM IN MM IN MM48HC**17 2339 1061 127.8 3249 58.7 1491 52.3 132848HC**20 2549 1156 141.5 3595 71.5 1816 52.3 132848HC**24 2699 1224 141.5 3595 71.5 1816 60.3 153248HC**28 2748 1246 157.8 4007 80.3 2040 60.3 1532NOTES:1. Dimensions in ( ) are inches.2. Hook rigging shackles through holes in base rail, as shown in detail “A.” Holes in base rails are centered around the unit center ofgravity. Use wooden top to prevent rigging straps from damaging unit.Fig. 10 -- Rigging Details48HC