Carrier 38AK008 Rig and Mount the Unit, Weight Distribution, Refrigerant Piping Sizes 60 Hz

CONSIDER SYSTEM REQUIREMENTS

•Consult local building codes and NEC for special instal- lation requirements.

•Allow sufficient space for airflow clearance, wiring, refrigerant piping, and unit servicing. See Fig. 2.

•Locate unit so that condenser airflow is unrestricted on all sides and above. Refer to Fig. 2.

•Unit may be mounted on a level pad directly on base rails or mounted on raised pads at support points. See Table 2 for weight distribution based on recommended support points.

NOTE: If vibration isolators are required for a particular instal- lation, use corner weight information in Table 2 to make proper selection.

Table 2 — Weight Distribution

UNIT	STD UNIT		CORNER		CORNER			CORNER			CORNER
			W			X			Y			Z
38AK
	Lb	Kg	Lb	Kg	Lb		Kg	Lb		Kg	Lb		Kg
			With Aluminum Coil
007	340	154	86	39	53		24	77		35	124		56
008	392	177	86	39	78		35	99		45	107		49
012	426	192	89	40	92		42	109		49	105		48
S008	510	231	115	52	89		40	133		60	173		87
S009,S012	564	256	133	60	97		44	141		64	193		88
			With Copper Coil
007	386	175	106	48	65		30	82		37	133		60
008	460	208	114	52	95		43	108		49	121		55
012	503	215	118	53	116		53	119		54	119		54
S008	578	262	143	65	106		48	142		64	187		85
S009,S012	632	287	161	73	114		52	150		68	207		94

NOTES:

1. Dimensions in [ ] are in millimeters.

2. See Fig. 3 for additional information.

Step 2 — Rig and Mount the Unit

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

RIGGING — These units are designed for overhead rigging. Refer to rigging label for preferred rigging method. Spreader bars are not required if top crating is left on unit. All panels must be in place when rigging. (See Fig. 3.) As further protec- tion for coil faces, plywood sheets may be placed against sides of unit, behind cables. Run cables to a central suspension point so that angle from the horizontal is not less than 45 degrees. Raise and set unit down carefully.

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

Raise from above to lift unit from rails or pad when unit is in final position.

After unit is in position, remove all shipping materials and top crating.

COMPRESSOR MOUNTING — Compressors are shipped from the factory held down by 4 bolts. After unit is installed, loosen each bolt until the snubber washer can be moved with finger pressure. See Fig. 4.

Step 3 — Complete Refrigerant Piping Con- nections — Suction connection is sweat with plastic cap; liquid connection is sweat with plastic cap. Refer to Table 3A or 3B for the proper line sizes. Follow standard piping practices.

SIZE REFRIGERANT LINES — Consider length of piping required between condensing unit and air handler, amount of liquid lift, and compressor oil return. See Table 4A and 4B and also refer to Part 3 of Carrier System Design Manual for design details and line sizing. Refer to air handler installation instruc- tions for additional information.

Table 3A — Refrigerant Piping Sizes — 60 Hz

LINEAR LENGTH OF PIPING — FT (M)

		0-25			25-50		50-75			75-100
UNIT	(0-7.6)				(7.6-15.2)		(15.2-22.9)			(22.9-30.5)
38					Line Size (in. OD)
	L		S		L	S	L	S		L	S
AK007	1/		11/	8	1/	11/	1/	11/	8	1/	11/	8
		2			2	8	2			2
AK008	1/	2	11/	8	1/	11/	5/	11/	8	5/	13/	8
					2	8	8			8
AK012	5/		11/	8	5/	13/	5/	13/	8	5/	13/	8
		8			8	8	8			8
AKS008	1/		11/	8	1/	11/	5/	11/	8	5/	13/	8
		2			2	8	8			8
AKS009	5/		11/	8	5/	11/	5/	13/	8	5/	13/	8
		8			8	8	8			8
AKS012	5/		11/	8	5/	11/	5/	13/	8	5/	13/	8
		8			8	8	8			8

LEGEND

L— Liquid LIne S — Suction Line

Table 3B — Refrigerant Piping Sizes — 50 Hz

LINEAR LENGTH OF PIPING — FT (M)

	0-25		25-50		50-75		75-100
UNIT	(0-7.6)		(7.6-15.2)		(15.2-22.9)		(22.9-30.5)
38			Line Size (in. OD)
	L	S	L	S	L	S	L	S
AK007	1/2	11/8	1/2	11/8	1/2	11/8	1/2	11/8
AK008	1/2	11/8	1/2	11/8	5/8	13/8	5/8	13/8
AK012	5/8	11/8	5/8	13/8	5/8	13/8	5/8	13/8
AKS008	1/2	11/8	1/2	11/8	5/8	13/8	5/8	13/8
AKS009	5/8	11/8	5/8	11/8	5/8	13/8	5/8	13/8
AKS012	5/8	11/8	5/8	11/8	5/8	13/8	5/8	13/8

LEGEND

L— Liquid LIne S — Suction Line

NOTES FOR TABLES 3A AND 3B:

1.Pipe sizes are based on a 2 F (1 C) loss for liquid and suction lines.

2.Pipe sizes are based on the maximum linear length shown for each column, plus a 50% allowance for fittings.

3.Charge units with R-22 in accordance with unit installation instructions.

4.Line size conversion to mm is:

in. mm

1/2 12.7

5/8 15.9

11/8 28.6

13/8 34.9

4