Carrier 48/50HJ004-014 Installation, Provide Unit Support, Shipping Packaging 48/50HJ004-006Shown

INSTALLATION

Step 1 — Inspect Shipment — File a claim with the shipping company if shipment is incomplete or damaged. See Fig. 1 for a typical shipping packaging for a COBRA™ energy recovery unit.

Step 2 — Provide Unit Support

ROOF CURB — The COBRA energy recovery unit can use a full-perimeter roof curb or a standard roof curb for the rooftop section of the unit with a supplemental equipment support for the

energy recovery section. The supplemental equipment support is not required. The standard rooftop unit roof curb is capable of supporting both the rooftop unit section and the energy recovery section. Assemble and install accessory roof curb in accordance with instructions shipped with curb. See Fig. 2A-4. Install insu- lation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb, not to the unit. The accesso- ry thru-the-bottom power and gas connection package must be installed before the unit is set on the roof curb.

Fig. 1 — Shipping Packaging (48/50HJ004-006 Shown)

DUCT OPENING SIZES

Supply = 13 7/8" x 20 1/4" R1 = 13 5/8" x 17 3/4"

R2 = 13 5/8" x 12 5/16"

14”

37 3/16"

Deck pans

67 3/8"

3 1/4

R 1

2" Return support. Only used on some applications.

Deck pans

R2

R1 = Return from building to HVAC

R2 = Return from building to 62AQ

92 1/2"

Supply

14"

2"

37 3/16"

SIDE VIEW END VIEW

Fig. 2A — COBRA Energy Recovery Unit Full-Perimeter Roof Curb — 48/50HJ004-007 with 62AQ060,100

2