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Bryant 581J installation instructions Legend and Notes for Table, Unbalanced 3-PhaseSupply Voltage

Models: 581J

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Legend and Notes for Table 5

Legend and Notes for Table 5

LEGEND:
BRKR	---	Circuit breaker
CO	---	Convenient outlet
DISC	---	Disconnect
FLA	---	Full load amps
LRA	---	Locked rotor amps
MCA	---	Minimum circuit amps
PE	---	Power exhaust
PWRD CO	---	Powered convenient outlet
UNPWR CO	---	Unpowered convenient outlet
NOTES:

1.In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to de- termine the percentage of voltage imbalance.

	% Voltage Imbalance = 100 x	max voltage deviation from average voltage

		average voltage
		average voltage

Example: Supply voltage is 230-3-60

AB = 224 v

BC = 231 v

AC = 226 v

(224 + 231 + 226)		681
Average Voltage =		=
3		3

=227

Determine maximum deviation from average voltage. (AB) 227 – 224 = 3 v

(BC) 231 – 227 = 4 v (AC) 227 – 226 = 1 v Maximum deviation is 4 v.

Determine percent of voltage imbalance.

	4
% Voltage Imbalance	= 100 x
	227
	= 1.76%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

581J

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Bryant 581J installation instructions Legend and Notes for Table, Unbalanced 3-PhaseSupply Voltage

Contents

SINGLE PACKAGE ROOFTOP TABLE OF CONTENTSInstallation Instructions 581JFIRE, EXPLOSION HAZARD SAFETY CONSIDERATIONSUNIT OPERATION AND SAFETY HAZARD 581JHorizontal Connections / Economizer Fig. 1 - Unit Dimensional Drawing - Sizes581J Vertical Connections / EconomizerC11111 581JFig. 2 - Unit Dimensional Drawing - Size 581JVertical Connections / Economizer Fig. 2 - Unit Dimensional Drawing - Size 12 cont 581JC11113 Step 1 - Plan for Unit Location INSTALLATIONFig. 3 - Service Clearance Dimensional Drawing Table 1 - Operating WeightsFrame-MountedInstallation Step 2 - Plan for Sequence of Unit InstallationCurb-MountedInstallation Pad-MountedInstallation581J Fig. 4 - Roof Curb Details - SizesROOFCURB Fig. 5 - Roof Curb Details - SizeACCESSORY 581JFig. 6 - Unit Leveling Tolerances Step 5 - Field Fabricate DuctworkStep 6 - Rig and Place Unit PROPERTY DAMAGE HAZARDStep 7 - Convert to Horizontal and Connect Ductwork when requiredStep 8 - Install Outside Air Hood Fig. 9 - Typical Access Panel LocationsEconomizer Hood and Two-PositionHood Step 9 - Install Flue HoodStep 10 - Install Gas Piping Fig. 13 - Economizer Filter InstallationEQUIPMENT DAMAGE HAZARD with Accessory Thru-the-CurbService ConnectionsFig. 15 - Gas Piping Guide Table 2 - Natural Gas Supply Line Pressure RangesFig. 17 - Gas Line Piping Fig. 18 - Gas Piping with Thru-CurbAccessoryFig. 19 - Gas Piping with Thru-CurbAccessory Fig. 20 - Gas Piping with Thru-BaseAccessoryFig. 23 - Condensate Drain Piping Details FIRE OR EXPLOSION HAZARDFig. 22 - Condensate Drain Pan Side View Fig. 21 - Orifice HoleUnits Without Factory-InstalledDisconnect Field Power SupplyFig. 25 - Disconnect Switch and Unit Units with Factory-InstalledDisconnectFig. 26 - Convenience Outlet Location Fig. 27 - Weatherproof Cover InstallationConvenience Outlets ELECTRICAL OPERATION HAZARDThermostat Fig. 28 - Powered Convenience Outlet WiringField Control Wiring Units without Thru-BaseConnectionsUnit without Thru-BaseConnection Kit Fig. 30 - Field Control Wiring RacewayHeat Anticipator Settings Fig. 29 - Typical Low-VoltageControl ConnectionsTo connect the Edge Programmable Thermidistat Perfect Humidityt Control ConnectionsPerfect Humidity - Space RH Controller To connect a field-suppliedhumidistatSRTN 581JRc Rh W1 G Y2 C O/W2/B Y1 X C G W2 W1 Y2 Y1 RRTU Open Control System Fig. 34 - RTU Open Multi-ProtocolControl Board581J Fig. 35 - RTU Open System Control Wiring Diagram 581JC11069 C11070 581J581J Supply Air Temperature SAT SensorOutdoor Air Temperature OAT Sensor Table 3 - RTU Open Controller Inputs and OutputsFig. 39 - RTU Open T-55Sensor ConnectionsC08460 Field ConnectionsSpace Temperature SPT Sensors Fig. 38 - T-55Space Temperature Sensor Wiring33ZCT59SPT Indoor Air Quality CO2 Sensor 33ZCSENCO2 - Typical Wiring DiagramFig. 42 - Space Temperature Sensor Typical Wiring Fig. 43 - Indoor/Outdoor Air Quality CO2 SensorSmoke Detector/Fire Shutdown FSD Fig. 45 - Outdoor Air Quality Sensor CoverFig. 46 - RTU Open / Outdoor CO2 Sensor 33ZCSENCO2 Connections581J Connecting Discrete InputsFig. 51 - Network Wiring Communication Wiring - ProtocolsFig. 49 - RTU Open SW3 Dip Switch Settings Fig. 50 - RTU Open Address SwitchesP1 P1 Local AccessRTU Open Troubleshooting Fig. 52 - BACview6 Handheld ConnectionsDifferential Enthalpy Control Fig. 53 - Enthalpy Switch 33CSENTHSW ConnectionsOutdoor Air Enthalpy Control PNO 33CSENTHSW Table 4 - LEDsReturn Air Enthalpy Sensor WiringFig. 55 - Controller Assembly Sensor Module Smoke DetectorsFig. 56 - Smoke Detector Sensor See “Completing Installation of Return Air SmokeSmoke Detector Locations Location Return Air without Economizer581J Return Air Sampling TubeFig. 59 - Return Air Sampling Tube Location Fig. 60 - Return Air Detector Shipping PositionSee “Legend and Notes for Table 5” on page 581Jw/ PWRD C.O 581JLegend and Notes for Table 2.Unbalanced 3-PhaseSupply Voltage581J EconoMi$er IV Occupancy Switch Step 13 - Adjust Factory-InstalledOptionsStep 14 - Install Accessories Fig. 62 - EconoMi$ert IV Wiring