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Carrier 50EK, 50EJ, 50EW, 50EY installation instructions Ð Motor Limitations, Ð User Dened Set Points

Models: 50EK 50EY 50EW 50EJ

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Table 16 Ð Motor Limitations

STANDARD EFFICIENCY MOTORS

	Nominal	Maximum			Maximum Amps					Maximum	Motor
	Hp	Bhp	208	230		460		575		Watts	Efficiency
	5	5.9	17.94	16.99		Ð		Ð		5,348	82.3
	5	5.9	Ð	Ð		8.50		5.78		5,240	84.0
		5.9	Ð	Ð		8.50		5.78		5,240	84.0
	7.5	8.7	25.52	24.36		Ð		Ð		7,717	84.1
	7.5	9.5	Ð	Ð		13.30		9.63		8,549	82.9
		9.5	Ð	Ð		13.30		9.63		8,549	82.9
	10	10.2	26.93	25.50		Ð		Ð		8,879	85.7
	10	11.8	Ð	Ð		14.75		11.33		10,284	85.6
		11.8	Ð	Ð		14.75		11.33		10,284	85.6
	15	15.3	42.84	40.80		Ð		Ð		13,686	83.4
	15	18.0	Ð	Ð		24.00		18.00		15,891	84.5
		18.0	Ð	Ð		24.00		18.00		15,891	84.5
	20	22.4	59.36	56.00		Ð		Ð		19,032	87.8
	20	23.4	Ð	Ð		29.25		22.82		19,950	87.5
		23.4	Ð	Ð		29.25		22.82		19,950	87.5
	25	28.9	76.30	72.83		Ð		Ð		24,499	88.0
	25	29.4	Ð	Ð		37.04		28.69		25,181	87.1
		29.4	Ð	Ð		37.04		28.69		25,181	87.1
	30	35.6	92.56	87.81		Ð		Ð		29,378	90.4
	30	34.7	Ð	Ð		42.80			n/a	29,316	88.3
		34.7	Ð	Ð		42.80			n/a	29,316	88.3


	HIGH EFFICIENCY MOTORS
	Nominal	Maximum			Maximum Amps					Maximum	Motor
	Hp	Bhp	208		230		460		575	Watts	Efficiency
		5.9	16.76		13.92		Ð		Ð	5,030	87.5
	5	5.9	Ð		Ð		6.96		Ð	5,030	87.5
		5.9	Ð		Ð		Ð		5.66	4,918	89.5
		8.7	26.10		22.27		Ð		Ð	7,334	88.5
	7.5	9.5	Ð		Ð		12.16		Ð	8,008	88.5
		9.5	Ð		Ð		Ð		9.50	7,728	91.7
		10.2	28.56		24.89		Ð		Ð	8,502	89.5
	10	11.8	Ð		Ð		14.40		Ð	9,836	89.5
		11.8	Ð		Ð		Ð		11.68	9,600	91.0
		15.3	45.08		39.17		Ð		Ð	12,543	91.0
	15	18.0	Ð		Ð		23.04		Ð	14,756	91.0
		18.0	Ð		Ð		Ð		18.12	14,439	93.0
		22.4	63.84		55.55		Ð		Ð	18,363	91.0
	20	23.4	Ð		Ð		29.02		Ð	19,183	91.0
		23.4	Ð		Ð		Ð		23.17	18,650	93.6
		28.9	80.69		70.05		Ð		Ð	23,511	91.7
	25	29.4	Ð		Ð		35.63		Ð	23,918	91.7
		29.4	Ð		Ð		Ð		28.81	23,432	93.6
		35.6	102.65		89.00		Ð		Ð	28,742	92.4
	30	34.7	Ð		Ð		43.38		Ð	28,015	92.4
		34.7	Ð		Ð		Ð		33.89	27,656	93.6

LEGEND

BHP Ð Brake Horsepower

NOTE: Extensive motor and electrical testing on the Carrier units has ensured that the full horsepower range of the motor can be utilized with con®dence. Using your fan motors up to the horsepower ratings shown on the Motor Limi- tations table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

Table 17 Ð User De®ned Set Points

	SET POINT			FORMAT	DESCRIPTION	LIMITS	DEFAULT
		OHSP		xx.xF	Occupied Heat Set Point	55 to 80 F	68
		OCSP		xx.xF	Occupied Cool Set Point	55 to 80 F	78
		UHSP		xx.xF	Unoccupied Heat Set Point	40 to 80 F	55
		UCSP		xx.xF	Unoccupied Cool Set Point	75 to 95 F	90
		SASP		xx.xF	Supply Air Set Point	45 to 70 F	55
		OATL		xx.xF	Hi OAT Lockout Temperature	55 to 75 F	65
		NTLO		xx.xF	Unoccupied OAT Lockout Temperature	40 to 70 F	50
		RTIO		xx.x	Reset Ratio	0 to 10	3
		LIMT		xx.x^F	Reset Limit	0 to 20 F	10
		MDP		xxx%	Minimum Damper Position	0 to 100%	20
		IAQS		xxxx	IAQ Set Point	1 to 5000	650
		UHDB		xx.x^F	Unoccupied Heating Deadband	0 to 10	1
		UCDB		xx.x^F	Unoccupied Cooling Deadband	0 to 10	1
		LTMP		xx.xF	Low Temp. Min. Position	0 to 100	10
		HTMP		xx.xF	High Temp. Min. Position	0 to 100	35
		PES1		xx.xF	CV Power Exhaust Stage 1 Point	0 to 100	25
		PES2		xx.xF	CV Power Exhaust Stage 2 Point	0 to 100	75

		LEGEND
CV	Ð Constant Volume
IAQ	Ð	Indoor Air Quality
OAT	Ð	Outdoor Air Temperature

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Carrier 50EK, 50EJ, 50EW, 50EY installation instructions Ð Motor Limitations, Ð User Dened Set Points

Contents

SAFETY CONSIDERATIONS CONTENTSIMPORTANT Ð READ BEFORE INSTALLING INSTALLATION Step 1 Ð Provide Unit SupportFig. 1 Ð Roof Curb Sizes UNIT LEVELING TOLERANCES DIMENSIONSDegrees and Inches Fig. 2 Ð Roof Curb Sizes UNIT LEVELING TOLERANCES DIMENSIONSDegrees and Inches Fig. 3 Ð Base Unit Dimensions, 50EJ/EK024-034 UNIT SIZE Fig. 5 Ð Base Unit Dimensions, 50EW/EY024-034 UNIT SIZE WHEN RIGGING NOTICE TO RIGGERS ALL PANELS MUST BE IN PLACEFig. 7 Ð Rigging Label HIGH-PRESSURESWITCH psig Table 1 Ð Physical DataOPERATING WEIGHT lb Factory Speed Setting rpmHIGH-PRESSURESWITCH psig Table 1 Ð Physical Data contOPERATING WEIGHT lb Factory Speed Setting rpmFig. 9 Ð Air Distribution Ð Thru-the-Side Step 4 Ð Make Unit Duct ConnectionsTable 2 Ð Evaporator Fan Motor Data Fig. 8 Ð Air Distribution Ð Thru-the-BottomFeatures with Thermostat Control of Unit Fig. 11 Ð Field Control Remote Start/Stop Fig. 12 Ð Control Board Diagram Step 7 Ð Make Electrical Connections Fig. 13 Ð Field Power Wiring Connections1.Remove cap from red 208-vwire Table 4 Ð Electrical Data Ð 50EJ,EK,EW,EY024-048 150/150 200/200 225/200 225/225 23.6 23.6 PEC Ð Power Exhaust Controller Fig. 14 Ð Control Box Diagram SizesFig. 15 Ð Control Box Diagram Sizes PEC − Power Exhaust ControllerTable 5 Ð CCN Connection Approved Shielded Cables Step 8 Ð Make Outdoor-AirInlet AdjustmentsFig. 16 Ð Field Control Thermostat Wiring Fig. 17 Ð Field Control Temperature Sensor WiringFig. 18 Ð Adding Seal Strip to Top of Hood Sides Fig. 20 Ð Adding Seal Strip toMounting Flange of Hood Sides Fig. 22 Ð Adding Foam Strip to Cross Member Attached to Filter Track AssemblyFig. 21 Ð Adding Seal Strip to Hood Top Mounting FlangeFig. 28 Ð Differential Enthalpy Control Fig. 29 Ð Wire Connections for Solid StateFig. 30 Ð Psychrometric Chart for Fig. 27 Ð Attaching Seal Strip to Filter CoverExhaust Mounting Details Fig. 31 Ð Barometric Relief Damper and PowerFig. 33A Ð Motormaster III Sensor Location Sizes Fig. 32 Ð Pressure Transducer LocationsFig. 33C Ð Motormaster III Sensor Location START-UP Direct Digital Controls DIP Switch Congura Table 8 Ð Potentiometer Signal LevelsTable 9 Ð Power Exhaust Default Set Points SETTING Sequence of Operation AIRFLOW AVAILABLE EXTERNAL STATIC PRESSURE in. wg Table 15 Ð Air Quantity Limits Table 17 Ð User Dened Set Points Table 16 Ð Motor LimitationsThe control module will operate economizer, run diag- nostics to monitor alarms/alerts at all times, and respond to CCN communications to perform any congured network POC product outboard control functions such as time/ outdoor-airtemperature broadcast and global occupancy broad- cast. When the optional expansion I/O board is employed, it will perform a periodic scan and maintain a database of ex- panded I/O points perform Fire/Smoke control power ex- haust required if in Occupied mode, perform IAQ control and monitor the fan, lter, demand limit, and eld-appliedstatus with accessories Fig. 36 Ð Space Temperature Sensor Wiring Fig. 35 Ð Heat Interlock Relay WiringTable 19 Ð Cooling Capacity Staging Table SERVICETable 18 Ð Cooling Capacity Staging Table CV Units with 2 CompressorsFig. 38 Ð Evaporator-FanPulley Alignment Evaporator Fan Service and Replacementand Adjustment LubricationFig. 39 Ð Belt Tension Adjustment Belt Tension Adjustment Ð To adjust belt tensionCondenser-FanAdjustment Evaporator-FanMotor ReplacementFig. 42 Ð Cooling Charging Chart Sizes Fig. 41 Ð Cooling Charging Chart SizesTROUBLESHOOTING Fig. 43 Ð Typical Refrigerant Circuiting50EJ,EK,EW,EY024-034 HPS Ð High-PressureSwitch Fig. 44 Ð Typical Refrigerant Circuiting50EJ,EK,EW,EY038,044 LEGEND FPS Ð Freeze Protection SwitchHPS Ð High-PressureSwitch Fig. 45 Ð Typical Refrigerant Circuiting50EJ,EW048 LEGEND FPS Ð Freeze Protection SwitchTable 20 Ð Control Board LED Alarms Base Module Ð VAV Table 21 Ð I/O Channel DesignationsBase Module Ð CV Table 22 Ð I/O Channel DesignationsModule Ð CV and VAV Table 23 Ð I/O Channel Designations ExpansionPage Page PACKAGED SERVICE TRAINING ELECTRICAL START-UPCHECKLISTTEMPERATURES PRE-START-UPGENERAL START-UPCHECKLIST cont