Carrier 48TC**16 Field Fabricate Ductwork, Rig and Place Unit, Property Damage Hazard

		C
A	MAXIMUM ALLOWABLE
	DIFFERENCE IN. (MM)
B
	A-B	B-C	A-C
	0.5” (13)	1.0” (25)	1.0” (25)

C10001

Fig. 4 - Unit Leveling Tolerances

Step 5 — Field Fabricate Ductwork

NOTE: Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or 0.45 in. wg (112 Pa) without economizer.

For vertical ducted applications, secure all ducts to roof curb and building structure. Do not connect ductwork to unit.

Fabricate supply ductwork so that the cross sectional dimensions are equal to or greater than the unit supply duct opening dimensions for the first 18 in. (458 mm) of duct length from the unit basepan.

Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

!CAUTION

PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in damage to roofing materials.

Membrane roofs can be cut by sharp sheet metal edges. Be careful when placing any sheet metal parts on such roof.

Step 6 — Rig and Place Unit

When the unit is ready to be rigged and no longer will be lifted by a fork truck, the wood protector under the basepan must be removed. Remove 4 screws from each base rail. Wood protector will drop to the ground. See instructions on the unit base rails.

Keep unit upright and do not drop. Spreader bars are required. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 5 for additional information.

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

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

All panels must be in place when rigging. Unit is not designed for handling by fork truck.

Before setting the unit onto the curb, recheck gasketing on curb.

48TC**16

“B”

PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING

UNIT ON ROOF CURB.

914 - 1371

( 36” - 54” )

“C”

“A”

DUCT END

DETAIL “A”

SEE DETAIL “A”

C10774

	MAX WEIGHT				DIMENSIONS
UNIT				A		B		C
	LB	KG	IN	MM	IN	MM	IN	MM
48TC**16	2130	968	116.0	2945	60.5	1535	59.5	1510

NOTES:

1.SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used.

2.Dimensions in ( ) are in millimeters.

3.Hook 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 to prevent rigging straps from damaging unit.

Fig. 5 - Rigging Details

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