Carrier 012 Ð Unit Leveling Tolerance, Ð External Trap Condensate Drain, Ð Rigging Details

MAXIMUM ALLOWABLE DIFFERENCE

A-B		B-C		A-C
mm	in.	mm	in.	mm	in.
13	.5	25	1.0	25	1.0

Fig. 2 Ð Unit Leveling Tolerance

Step 3 Ð Make Field Connection for Conden- sate Disposal Ð Units must have an external trap added. See Fig. 3. A 3¤4-in. FPT connection is located on the side of the unit. Use a trap at least 100 mm (4 in.) deep, and protect against freeze-up.

If drain line is run to a drain, pitch line away from unit at 25 mm (one in.) per 3 m (10 ft) of run. Do not use a pipe size smaller than the unit connection.

Step 4 Ð Rig and Place Unit Ð Inspect unit for trans- portation damage. File any claim with transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a ref- erence. See Tables 1A and 1B and Fig. 4 for additional in- formation. Operating weight is shown in Tables 1A and 1B and Fig. 4.

Lifting holes are provided in base rails as shown in Fig. 4 and 5. Refer to rigging instructions on unit.

NOTES:

1. Dimensions in ( ) is in millimeters.

2.Hood rigging shackles through holes in base rail, as shown in detail ``A''. Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps from damaging unit.

3.Weights do not include economizer. See Tables 1A and 1B for econo- mizer weights.

All panels must be in place when rigging.

All panels must be in place when rigging.

POSITIONING Ð Maintain clearance around and above unit to provide proper air ¯ow and service access. See Fig. 5.

Position unit on roof curb so that the following clearances are maintained; 6 mm (1¤4 in.) clearance between roof curb and base rails on each side and front of unit: 29 mm (15¤32 in.) clearance between roof curb and rear of unit (see Fig. 1, section C-C).

Do not install unit in an indoor location. Do not locate unit air inlet near exhaust vents or other sources of contami- nated air.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

After unit is in position, remove polyethylene shipping wrap- per and rigging skid.

NOTE: Trap should be deep enough to offset maximum unit static difference. A 100 mm (4 in.) trap is recommended.

Fig. 3 Ð External Trap Condensate Drain

UNIT	MAX				DIMENSIONS
	WEIGHT		``A''		``B''		``C''
50LJQ
	lb	kg	in.	mm	in.	mm	in.	mm
008	840	381	87.38	2219	40.25	1022	41.31	1050
012	940	426	87.38	2219	40.25	1022	48.31	1253

Fig. 4 Ð Rigging Details

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