Carrier 48TJ016-028 Make Unit Duct Connections -- Unit, Install Flue Hood and Wind Baffle, Inside

Step 3 --Field Fabricate Ductwork --Secure all ducts to building structure. Use flexible duct connectors be- tween unit and ducts as required. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through an unconditioned space must be in- sulated and covered with a vapor barrie];

Step 4 -- Make Unit Duct Connections -- Unit

is shipped for thru-the-bottonlduct connections. Ductwork openings are shown in Fig. 1, 4, and 5. Duct connections are

shown in Fig. 6. Field-fabricated concentric ductwork may be connected as shown in Fig. 7 and 8. Attach all ductwork to roof

curb and roof CUlb basepans.

HEAT

SEE NOTE

[_AIR

OUT

NOTE: Do not drill in this area; damage to basepan may result in water leak.

Fig. 6 -- Air Distribution -- Thru-the-Bottom

SEE NOTE

NOTE

AIR OUT AIR IN AIR OUT

NOTE: Do not drill in this area; damage to basepan may result in water leak.

Fig. 7 -- Concentric Duct Air Distribution

Step 5 --Install Flue Hood and Wind Baffle --

Flue hood and wind baffle are shipped secured under main control box. To install, secure flue hood to access panel. See Fig. 9. The wind baffle is then installed over the flue hood.

NOTE: When properly installed, flue hood will line up with combustion fan housing. See Fig. 10.

Step 6 -- Trap Condensate Drain -- See Fig, 11

for drain location. One 3/4-in. half coupling is provided inside unit evaporator section for condensate drain connection. An 81/2-in. x 3/4-in. diameter and 2-in. x 3/4-in. diameter pipe nip- ple, coupled to standard 3/4-in. diameter elbows, provide a straight path down through hole in unit base rails (see Fig. 12). A trap at least 4-in. deep must be used.

I'-O1

24"MIN.

/

BAFFLE

NOTE: Dimensions A, A',and B'are obtained from field-supplied ceiling diffuser.

Shaded area indicates block-off panels.

Fig. 8- Concentric Duct Details

	/
/	\	ii

\		,.ii
	/	\
\
	/	\
J
WIND		N
		\
BAFFLE		\
		\
FLUE		\
HOOD

COMBUSTION[l

FAN HOUSING[l

(INSIDE)[

[

[

[

[

[

[

WIND BAFFLE

MOUNTING HOLES

Fig. 9 --Flue Hood Location