Carrier 38AKS013-024 Ð Rig and Mount the Unit, Ð Complete Refrigerant Piping Connections

Table 2 Ð Weight Distribution

									WEIGHT
UNIT	Total								Support Point
38AKS	Operating			A			B			C		D			E			F
	lb	kg	lb		kg	lb		kg	lb		kg	lb	kg	lb		kg	lb		kg
013	732	332	94		43	93		42	93		42	149	68	151		68	152		69
013C	825	374	119		54	116		53	115		52	157	71	159		72	159		72
014	779	353	95		43	94		43	94		43	164	74	166		75	166		75
014C	919	417	131		59	129		59	128		58	176	80	177		80	178		81
016	789	358	95		43	95		43	96		44	167	76	168		76	168		76
016C	929	421	131		59	130		59	130		59	178	81	180		82	180		82
024	900	408	119		54	114		52	113		51	179	81	185		84	190		86
024C	1040	472	155		70	150		68	146		66	191	87	196		89	202		92

Step 2 Ð Rig and Mount the Unit

Be sure unit panels are securely in place prior to rigging.

RIGGING Ð These units are designed for overhead rigging only. For this purpose, the transverse base channels extend beyond the sides of the unit, with holes provided in the end plates to attach cables or hooks. Rig with top skid packaging assembly in place to prevent unit damage by the rigging cable. As further protection for the coil faces, plywood sheets can be placed against the sides of the unit, behind the cables. Run the cables to a central suspension point so that the angle from the horizontal is not less than 45 degrees. Raise and set the unit down carefully.

If it is necessary to roll the unit into position, mount the unit on longitudinal rails, using a minimum of 3 rollers. Apply force to the rails, not the unit. If the unit is to be skid- ded into position, place it on a large pad and drag it by the pad. Do not apply any force to the unit.

Raise from above to lift unit from the rails or pad when unit is in ®nal position.

COMPRESSOR MOUNTING Ð As shipped, the compres- sor is held tightly in place by self-locking bolts. Before start- ing unit, loosen self-locking bolts until the snubber washer can be moved sideways with ®nger pressure. Do not remove shipping bolts. See Fig. 3.

Step 3 Ð Complete Refrigerant Piping Connections

IMPORTANT: A refrigerant receiver is not provided with the unit. Do not install a receiver.

SIZE REFRIGERANT LINES Ð Consider the length of pip- ing required between outdoor unit and indoor unit (evapo- rator), the amount of liquid lift, and compressor oil return. See Tables 3-5B and also refer to Part 3 of Carrier System Design Manual and E20-II software for design details and line sizing. Refer to indoor unit installation instructions for additional information.

NOTE: Use the piping data in Tables 3-5B as a general guide only. For more precise calculations, refer to Carrier System Design manual or E20-II software.

Condensing units with multiple-step unloading may require double suction risers to assure proper oil return at minimum load operating condition. See Tables 4A-5B and Fig. 4. Reduction of evaporator coil surface should be ana- lyzed to provide sufficient refrigerant velocity to return oil to the compressor. Liquid line solenoid valves may be used in certain situations to accomplish this. Hot gas bypass, if used, should be introduced before the evaporator.

Note that refrigerant suction piping should be insulated.

Table 3 Ð Liquid Line Data

	MAXIMUM
	ALLOWABLE			LIQUID LINE
	LIQUID LIFT
UNIT	ft (m)
38AKS			Maximum	Maximum	Filter Drier
			Allowable	Allowable	and
	60 Hz	50 Hz	Pressure	Temp.	Sight Glass
			Drop	Loss	Flare Conn.*
			psig (kPa)	F (C)	in. (mm)
013	52 (15.8)
014	67 (20.4)		7 (48.3)	2 (1.1)	5¤8 (15.88)
016	82 (25.0
024	87 (26.5)	86 (26)

*Inlet and outlet.

NOTE: Data shown is for units operating at 45 F (7.2 C) saturated suction and 95 F (35 C) entering air.

Fig. 3 Ð Compressor Mounting

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