Bryant 548J manual 23 81 19.13.G. Electrical Requirements

5.Unit shall be factory configured for vertical supply & return configurations.

6.Unit shall be field convertible from vertical to horizontal configuration

7.Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with vertical return.

23 81 19.13.G. Electrical Requirements

1.Main power supply voltage, phase, and frequency must match those required by the manufacturer. 23 81 19.13.H. Unit Cabinet

1.Unit cabinet shall be constructed of galvanized steel, and shall be bonderized and coated with a pre-painted baked enamel finish on all externally exposed surfaces.

2.Unit cabinet exterior paint shall be: film thickness, (dry) 0.003 inches minimum, gloss (per ASTM D523, 60_F):

60, Hardness: H-2H Pencil hardness.

3.Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or 340/360 minimum exterior sweat criteria. Interior surfaces shall be insulated with a minimum 1/2-in. thick, 1 lb density, flexible fiberglass insulation, neoprene coated on the air side. Aluminum foil-faced fiberglass insulation shall be used in the heat compartment.

4.Base of unit shall have a minimum of three locations for thru-the-base electrical connections (factory installed or field installed), standard.

5.Base Rail

a.Unit shall have base rails on a minimum of 2 sides.

b.Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.

c.Holes shall be provided in the base rail for moving the rooftop by fork truck.

d.Base rail shall be a minimum of 16 gauge thickness.

6.Condensate pan and connections:

a.Shall be a sloped condensate drain pan made of a non-corrosive material.

b.Shall comply with ASHRAE Standard 62.

c.Shall use a 3/4” -14 NPT drain connection, possible either through the bottom or end of the drain pan. Con- nection shall be made per manufacturer’s recommendations.

7.Top panel:

a. Shall be a single piece top panel on 04 thru 09 sizes.

8.Electrical Connections

a.All unit power wiring shall enter unit cabinet at a single, factory-prepared, knockout location.

b.Thru-the-base capability

(1.) Standard unit shall have a thru-the-base electrical location(s) using a raised, embossed portion of the unit basepan.

(2.) Optional, factory-approved, water-tight connection method must be used for thru-the-base electrical con- nections.

(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.

9.Component access panels (standard)

a.Cabinet panels shall be easily removable for servicing.

b.Unit shall have one factory installed, tool-less, removable, filter access panel.

c.Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and com- pressors shall have molded composite handles.

d.Handles shall be UV modified, composite. permanently attached, and recessed into the panel.

e.Screws on the vertical portion of all removable access panel shall engage into heat resistant, molded compos- ite collars.

f.Collars shall be removable and easily replaceable using manufacturer recommended parts.

23 81 19.13.I. N/A

23 81 19.13.J. Coils

1.Standard Aluminum/Copper Coils: on all models.

a.Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to seam- less internally grooved copper tubes with all joints brazed.

b.Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig, and qualified to UL 1995 burst test at 1775 psig.

c.Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL 1995 burst test at 1980 psig.

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