Bryant 548D Rear EconoMi$er Flange Installation, Exhaust Air Hood Assembly, EconoMi$er Installed

OUTDOOR AIR		UNIT FILTER	ECONOMIZER CLIP
OPENING PANEL	EXHAUST AIR	RACK	HVAC UNIT
	HOOD TOP
	SCREEN
	RETAINER		ECONOMIZER
	EXHAUST AIR	UNIT BASE
SEAL STRIP	HOOD SIDES
			ECONOMIZER REAR
			FLANGE

Fig. 28 — Rear EconoMi$er Flange Installation

EXHAUST AIR SCREEN

EXHAUST AIR

BOTTOM BRACKET

Fig. 24 — Exhaust Air Hood Assembly
			WIRING HARNESS
OUTDOOR AIR	SEAL STRIP
OPENING		OUTDOOR AIR
PANEL		HOOD TOP
			OUTDOOR AIR
		SCREEN	BLOCK-OFF PLATE
		RETAINER
	SEAL STRIP	OUTDOOR AIR
		INLET
		SCREENS
ASSEMBLED
EXHAUST HOOD

OUTDOOR AIR

HOOD SIDES

Fig. 29 — EconoMi$er Installed

Fig. 25 — Outdoor Air Hood Assembly

Fig. 26 — Completed Hood Assembly

	BLOWER
RETURN AIR	FILTER
BLOCK-OFF
PLATE
OUTDOOR AIR
BLOCK-OFF PLATE
	ECONOMI$ER

Fig. 27 — Return Air Block-Off Plate Installation

11.Install the complete hood assembly on the unit and secure using the screws provided.

NOTE: If optional power exhaust is being installed, complete installation of power exhaust at this time. See Fig. 32 for wiring.

12.Remove the indoor fan motor access panel.

13.Mount the supply air temperature sensor to the lower left portion of the indoor blower housing with the two

(2)screws provided (see Fig. 33). Connect the violet and pink wires to the corresponding connections on the supply air temperature sensor. Replace the indoor fan motor access panel.

CO2 Control Set Up

If a CO2 sensor is not being used, proceed to the next section. If a CO2 sensor is being used, perform the following:

1.Determine the value at which you want the minimum position of the dampers to begin opening to allow a greater amount of outdoor air to enter. The range is 800 to 1,400 ppm.

2.Locate the CO2 SP (PPM) potentiometer and adjust to the desired set point. See Fig. 34.

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