Indoor Coil Access Panel Relocation | Bryant 581B instruction

IMPORTANT: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

3.The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bot- tom of the indoor coil access panel. See Fig. 24.

4.Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. See Fig. 25.

5.Remove the shipping tape holding the economizer barometric relief damper in place.

6.Insert the hood divider between the hood sides. See Fig. 25 and 26. Secure hood divider with 2 screws on each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.

SIDE

PANEL

	TOP
	SIDE
	PANEL
	CAULK
	HERE
INDOOR	INDOOR
COIL	COIL
ACCESS	ACCESS
PANEL	PANEL

Fig. 24 — Indoor Coil Access Panel Relocation

TOP

PANEL

INDOOR COIL

ACCESS PANEL

LEFT
HOOD	SCREW
SIDE	B
	19 1/16”

33 3/8”

HOOD DIVIDER

Fig. 25 — Outdoor-Air Hood Construction

17 1/4”

DIVIDER

OUTSIDE

AIR

HOOD

CLEANABLE

ALUMINUM FILTER

FILTER

BAROMETRIC RELIEF

FILTER CLIP

Fig. 26 — Filter Installation

7.Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bot- tom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 26.

8.Caulk the ends of the joint between the unit top panel and the hood top. See Fig. 24.

9.Replace the filter access panel.

10.Install all EconoMi$er IV accessories. EconoMi$er IV wiring is shown in Fig. 27.

Barometric flow capacity is shown in Fig. 28. Outdoor air leakage is shown in Fig. 29. Return air pressure drop is shown in Fig. 30.

F. EconoMi$er IV Standard Sensors

Outdoor Air Temperature (OAT) Sensor

The outdoor air temperature sensor (HH57AC074) is a 10 to 20 mA device used to measure the outdoor-air temperature. The outdoor-air temperature is used to determine when the EconoMi$er IV can be used for free cooling. The sensor is factory-installed on the EconoMi$er IV in the outdoor airstream. See Fig. 21. The operating range of temperature measurement is 40 to 100 F.

Supply Air Temperature (SAT) Sensor

The supply air temperature sensor is a 3 K thermistor located at the inlet of the indoor fan. See Fig. 31. This sensor is factory installed. The operating range of temperature measurement is 0° to 158 F. See Table 3 for sensor tempera- ture/resistance values.

The temperature sensor looks like an eyelet terminal with wires running to it. The sensor is located in the “crimp end” and is sealed from moisture.

Outdoor Air Lockout Sensor

The EconoMi$er IV is equipped with an ambient tempera- ture lockout switch located in the outdoor airstream which is used to lockout the compressors below a 42 F ambient tem- perature. See Fig. 21.

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581B specifications

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