Bryant 580F operation manual III. Field Fabricate Ductwork, IV. Make Unit Duct Connections

III. STEP 3 — FIELD FABRICATE DUCTWORK

Secure all ducts to building structure. Use flexible duct con- nectors between unit and ducts as required. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applica- ble codes.

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

IV. STEP 4 — MAKE UNIT DUCT CONNECTIONS

Unit is shipped for thru-the-bottom duct connections. Duct- work openings are shown in Fig. 1 and 4-6. Duct connections are shown in Fig. 7. Field-fabricated concentric ductwork may be connected as shown in Fig. 8 and 9. Attach all duct- work to roof curb and roof curb basepans.

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

Fig. 7 — Air Distribution — Thru-the-Bottom

V. 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. 10. 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. 11.

VI. STEP 6 — TRAP CONDENSATE DRAIN

See Fig. 12 for drain location. One 3/4-in. half coupling is pro- vided 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 nipple, coupled to standard 3/4-in. diameter elbows, provide a straight path down through hole in unit base rails (see Fig. 13). A trap at least 4-in. deep must be used.

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

Shaded areas indicate block-off panels.

Fig. 9 — Concentric Duct Details

WIND

BAFFLE

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

Fig. 8 — Concentric Duct Air Distribution Fig. 10 — Flue Hood Location

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