Supply Ducting And Registers - Carrier Air V Owner's Manual

IMPORTANT
Upon installation, the divider must be raised to and sealed with both the bottom of the roof top unit and the sides of
the roof opening.
3
The 115 VAC service for the roof top unit must be
connected into the ceiling assembly frame. To pre-
vent wire pinching and to promote ease of
installation, allowances must be made for routing
the 115 VAC supply wiring into the front of the roof
opening.

SUPPLY DUCTING AND REGISTERS

A. Ducting
1
The field fabricated supply ducting must attach to both sides of the ceiling assembly frame. A minimum of two
ducts are required, with one duct attached to each side of the ceiling assembly frame.
See Figures 1 and 2 for both an overhead view of the system with ducts and a ceiling assembly/ceiling cavity
installation.
2
Each duct must have a minimum height of 1 1/2", maximum height cannot exceed 4 inches. Total free area
inside each duct must be no less than 10 square inches.
To decrease restriction and increase air flow, the ducting should make as few bends and turns as possible. When
corners or turns are required, we recommended that you radius the corners to keep air flow at a maximum.
Ten (10) square inches of free area per duct is the minimum requirement, larger ducting will improve air flow
and system performance.
3
When ducting secures to the ceiling assembly frame, maximum width is 8 inches and maximum
height is 3 1/2".
4
All field fabricated cold air supply ducting must be insulated and must have a vapor barrier.
4
The ceiling assembly frame has pin sockets ex-
tending from the front of the electrical box. This
mates with the roof top unit 115 volt electrical
conduit. When making this connection, verify that
the plugs are properly aligned and have snapped
together securely.
NOTE
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OWNER S GUIDE - 10