Bryant 580F operation manual Outdoor Air Damper Leakage, Return Air Pressure Drop in. wg, Cfm

FROM FUSE BLOCK

BLK YEL BLU

B

13B

12 13A 13C

2 5 6 2

TO PRESSURE

TRANSDUCER

1 2 3

TO MOTOR(S)

Fig. 24 — Motormaster® V Control

XIII. STEP 13 — ADJUST FACTORY-INSTALLED OPTIONS A. Optional EconoMi$erIV

See Fig. 25 and 26 for EconoMi$erIV component locations.

NOTE: These instructions are for installing the optional EconoMi$erIV only. Refer to the accessory EconoMi$erIV or EconoMi$er2 installation instructions when field installing an EconoMi$erIV or EconoMi$er2 accessory.

To complete installation of the optional EconoMi$erIV, per- form the following procedure.

1.Remove the EconoMi$erIV hood. Refer to Step 11 — Install Outdoor-Air Hood on page 15 for information on removing and installing the outdoor-air hood.

2.Relocate outdoor air temperature sensor from ship- ping position to operation position on EconoMi$erIV. See Fig. 25.

IMPORTANT: Failure to relocate the sensor will result in the EconoMi$erIV not operating properly.

3. Re-install economizer hood.

			OUTDOOR AIR
	FRAME		TEMPERATURE SENSOR
SCREWS ECONOMI$ERIV		SCREWS (INSTALLED OPERATION
	TOP		POSITION)

LOW TEMPERATURE

COMPRESSOR

LOCKOUT SWITCH

Fig. 25 — EconoMi$erIV Component Locations —

End View

SUPPLY AIR

TEMPERATURE SENSOR

LOCATION

ECONOMI$ERIV

ACTUATOR

CONTROLLER

FLANGE

AND SCREWS (HIDDEN)

Fig. 26 — EconoMi$erIV Assembled in Unit —

Side View

4.Install all EconoMi$erIV accessories. EconoMi$erIV wiring is shown in Fig. 27.

Outdoor air leakage is shown in Table 8. Return air pressure drop is shown in Table 9.

Table 8 — Outdoor Air Damper Leakage

	DAMPER STATIC PRESSURE (in. wg)
	0.2	0.4	0.6	0.8	1.0	1.2
LEAKAGE (cfm)	35	53	65	75	90	102

Table 9 — Return Air Pressure Drop (in. wg)

CFM

4500	5000	5400	6000	7200	7500	9000	10,000	11,250
0.040	0.050	0.060	0.070	0.090	0.100	0.110	0.120	0.140

B. EconoMi$erIV 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$erIV can be used for free cooling. The sensor must be field-relocated. See Fig. 25. The operating range of tem- perature 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. 26. This sensor is factory installed. The operating range of temperature measurement is 0° to 158 F. See Table 10 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.

Low Temperature Compressor Lockout Switch

The EconoMi$erIV is equipped with an ambient tempera- ture lockout switch located in the outdoor air stream which is used to lockout the compressors below a 42 F ambient tem- perature. See Fig. 25.

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