Carrier 48EK, 48EW, 48EY024-068, 48AW, 48AK, 48AJ Install Flue Hood, Combustion Fan Housing Location

Step 5 — Install Flue Hood

48AJ,AK,AW,AY020-050 AND 48EJ,EK,EW,EY024-048 UNITS — Flue hood is shipped inside gas section of unit. To install, secure flue hood to access panel. See Fig. 20A.

48AJ,AK,AW,AY060 AND 48EJ,EK,EW,EY054-068 UNITS — Flue hood and wind baffle are shipped inside gas section of unit. To install, secure flue hood to access panel. In- stall the two pieces of the wind baffle over the flue hood. See Fig. 20B.

NOTE: When properly installed, flue hood will line up with combustion fan housing. See Fig. 21.

Fig. 21 — Combustion Fan Housing Location

Step 6 — Trap Condensate Drain — See Fig. 5-16 for drain location. Condensate drain is open to atmosphere and must be trapped. Install a trapped drain at the drain location. One 1-in. FPT coupling is provided inside the unit evaporator section for condensate drain connection. A trap at least 4-in. deep must be used. See Fig. 22. Trap must be installed to pre- vent freeze-up.

Condensate pans are sloped so that water will completely drain from the condensate pan to comply with indoor air quali- ty guidelines. The condensate drain pans are not insulated.

Fig. 20A — Flue Hood Location (48AJ,AK,AW,AY020-050 and 48EJ,EK,EW,EY024-048 Units)

GAS SECTION

ACCESS PANEL

FLUE HOOD

WIND

BAFFLE

TOP VIEW SIDE VIEW

Fig. 20B — Flue Hood Location

(48AJ,AK,AW,AY060 and

48EJ,EK,EW,EY054-068 Units)

Fig. 22 — Condensate Drain Trap Piping Details

(Typical Roof Curb or Slab Mount Shown)

Step 7 — Install Gas Piping — Unit is equipped for use with natural gas. Installation must conform with local building codes or, in the absence of local codes, with the Na- tional Fuel Gas Code, ANSI Z223.1.

Install manual gas shutoff valve with a 1/8-in. NPT pressure tap for test gage connection at unit. Field gas piping must in- clude sediment trap and union. See Fig. 23. An 1/8-in. NPT is also located on the gas manifold adjacent to the gas valve.

Do not pressure test gas supply while connected to unit. Always disconnect union before servicing.

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