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Bryant 558F EconoMi$er IV Wiring, Outdoor-AirDamper Leakage, Return-AirPressure Drop

Models: 558F

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Fig. 23 — EconoMi$er IV Wiring

FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK

	LEGEND	Potentiometer Defaults Settings:
	DCV — Demand Controlled Ventilation	Power Exhaust	Middle
		Minimum Pos.	Fully Closed
	IAQ — Indoor Air Quality
		DCV Max.	Middle
	LA — Low Ambient Lockout Device
		DCV Set	Middle
	OAT — Outdoor-Air Temperature
		Enthalpy	C Setting
	POT — Potentiometer

RAT — Return-Air Temperature

NOTES:

1.620 ohm, 1 watt 5% resistor should be removed only when using differential enthalpy or dry bulb.

2.If a separate field-supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the secondary of the transformer grounded.

3.For field-installed remote minimum position POT, remove black wire jumper between P and P1 and set control minimum position POT to the minimum position.

Fig. 23 — EconoMi$er IV Wiring

(cfm)	2500
MINUTE	2000
PER	1500
FEET	1500
FEET	1000
CUBICIN	1000
CUBICIN	500
	500
FLOW	0
	0					0.05			0.15			0.25


							STATIC PRESSURE (in. wg)
			Fig. 24 — Barometric Flow Capacity
(cfm)	30
MINUTE	30
MINUTE	25
	25
PER	20
	20
	15
FEET	15
	10

CUBICIN
CUBICIN	0
	5
FLOW	0.13					0.20	0.22	0.25	0.30	0.35	0.40	0.45	0.50
FLOW							STATIC PRESSURE (in. wg)
							STATIC PRESSURE (in. wg)

Fig. 25 — Outdoor-Air Damper Leakage

(cfm)	6000
MINUTE	5000
	5000
PER	4000
	4000
	3000
FEET	3000
FEET	2000
CUBIC	2000
	1000
	1000
IN
FLOW	0
	0
	0.05			0.10	0.15	0.20	0.25	0.30	0.35

STATIC PRESSURE (in. wg)

Fig. 26 — Return-Air Pressure Drop

D. 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. 17. 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. 27. This sensor is factory installed. The operating range of temperature mea- surement is 0° to 158 F. See Table 3 for sensor temperature/ resistance values.

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Image 25

Bryant 558F EconoMi$er IV Wiring, Outdoor-AirDamper Leakage, Return-AirPressure Drop, D. EconoMi$er IV Standard Sensors

Contents

III. Step 3 - Install External Trap for CONTENTSAdjust Factory-Installed Adjust Evaporator-FanSpeedIV. STEP 4 - RIG AND PLACE UNIT Fig. 1 - Horizontal Conversion PanelsA. Positioning Fig. 2 - Roof Curb Details Fig. 5 - Condensate Drain Piping Details Fig. 3 - Unit Leveling ToleranceFig. 4 - Condensate Drain Connection Side View Fig. 6 - Rigging DetailsPage Page Page ASHRAE 90.1-1999Compliant Units B. Field Control Wiring A. Field Power SupplyFig. 8 - Power Wiring Connections V.STEP 5 - MAKE ELECTRICAL CONNECTIONSPage Page Page Page Page Page Page Page Page Page Page Page Fig. 12 - Field Control Wiring Raceway Fig. 9 - Conduit InstallationFig. 10 - Typical Component Location B. Convenience OutletFig. 16 - Outdoor-AirDamper Position Setting Outdoor-AirDamper InstalledFig. 13 - Damper Panel with Manual Fig. 14 - Outdoor-AirHood DetailsFig. 18 - Typical Access Panel Locations Fig. 20 - Indoor Coil Access Panel RelocationFig. 22 - Filter Installation Fig. 17 - EconoMi$er IV Component LocationsFig. 25 - Outdoor-AirDamper Leakage Fig. 23 - EconoMi$er IV WiringFig. 26 - Return-AirPressure Drop D. EconoMi$er IV Standard SensorsFig. 27 - Supply Air Sensor Location Temperature/Resistance ValuesTable 3 - Supply Air Sensor E. EconoMi$er IV Control ModesFig. 30 - Return Air Temperature or Enthalpy Fig. 29 - Outside Air TemperatureChangeover Set Points Sensor Mounting LocationFig. 31 - Enthalpy Changeover Set Points Fig. 33 - CO2 Sensor Maximum Range SettingFig. 32 - EconoMi$er IV Control APPROXIMATE DRY BULB TEMPERATURE- F CPage Table 5 - CO2 Sensor Standard Settings Fig. 36 - Evaporator-FanPulley Adjustment VII. STEP 7 - ADJUST EVAPORATOR-FANSPEEDFig. 34 - Typical Belt-DriveMotor Mounting for Sizes 090,091,102,103Table 8 - Accessory/FIOP Static Pressure* in. wg Table 6 - Fan Rpm at Motor Pulley SettingsTable 7 - Evaporator-FanMotor Efficiency GENERAL FAN PERFORMANCE NOTES Table 9 - Evaporator Fan Motor DataPage Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page VI. REFRIGERANT SERVICE PORTS V. INTERNAL WIRINGPRE-START-UP START-UP I. UNIT PREPARATIONVIII. COOLING X. SAFETY RELIEFA. To Shut Off Unit XI. VENTILATION Continuous FanI. CLEANING SERVICEFig. 37 - Cleaning Condenser Coil A.Evaporator CoilVI. ECONOMIZER ADJUSTMENT IV. CONDENSER-FANADJUSTMENT FigA. Checking and Adjusting Refrigerant Charge Fig. 40 - Condenser Fan AdjustmentVIII. HIGH-PRESSURESWITCH B. To Use Cooling Charging ChartsIX. LOSS-OF-CHARGESWITCH XI. REPLACEMENT PARTSFig. 44 - Cooling Charging Chart 558F150 Fig. 43 - Cooling Charging Chart 558F120CIRCUIT NO Fig. 45 - Cooling Charging Chart 558F091 Fig. 48 - Cooling Charging Chart 558F151 Fig. 47 - Cooling Charging Chart 558F121TROUBLESHOOTING I. UNIT TROUBLESHOOTING II. ECONOMI$ER IV TROUBLESHOOTINGA. EconoMi$er IV Preparation G.EconoMi$er IV Troubleshooting CompletionB. Differential Enthalpy C.Single EnthalpyFig. 49 - Typical Unit Wiring Schematic Table 30 - Cooling Service Analysis Fig. 50 - EconoMi$er IV Functional View Table 31 - EconoMi$er IV Input/Output LogicINDEX CALL FOR FREE CATALOG SERVICE TRAININGCATALOG NO Copyright 2005 Bryant Heating & Cooling SystemsPage TEMPERATURES START-UPCHECKLIST Remove and Store in Job FileI. PRELIMINARY INFORMATION III. START-UP