Carrier EK Fan Performance Ð Power Exhaust, Motor Limitations, Esp, Standard Efficiency Motors

Page 38

Table 15 Ð Fan Performance Ð Power Exhaust

48EJ,EK,EW,EY024-048 (20 THRU 45 TONS)

Air¯ow						Low Speed																Medium Speed																					High Speed
Air¯ow			208 v						230, 460, 575 v											208 v								230, 460, 575 v												208 v								230, 460, 575 v
(Cfm)			208 v						230, 460, 575 v											208 v								230, 460, 575 v												208 v								230, 460, 575 v
		ESP	Bhp		Watts			ESP		Bhp			Watts				ESP			Bhp		Watts					ESP				Bhp			Watts				ESP		Bhp			Watts					ESP		Bhp		Watts
6,500		0.32	2.82			3160		0.70		2.98			3340				Ð			Ð-		Ð-			Ð	-			Ð-			Ð-		Ð-				Ð-		Ð-			Ð-		Ð		-		Ð	-
6,700		0.23	2.87			3220		0.63		3.03			3400				0.60			3.01		3380					0.82				3.23			3620				Ð-		Ð-			Ð-		Ð		-		Ð-		Ð-
6,900		0.17	2.92			3270		0.59		3.09			3460				0.55			3.07		3440					0.78				3.28			3680				Ð-		Ð-			Ð-		Ð		-		Ð-		Ð-
7,100		0.13	2.93			3290		0.56		3.11			3490				0.49			3.12		3500					0.73				3.34			3740				Ð-		Ð-			Ð-		Ð		-		Ð-		Ð-
7,300		0.09	2.97			3330		0.53		3.15			3530				0.43			3.18		3560					0.68				3.39			3800				Ð-		Ð-			Ð-		Ð		-		Ð-		Ð-
7,500		Ð-	Ð-			Ð-	0.51		3.19				3580		0.39			3.24				3630			0.64				3.44				3860			Ð	-		Ð-		Ð-		Ð-					Ð-		Ð-
7,700		Ð-	Ð-			Ð-	0.48		3.23				3620		0.33			3.27				3670			0.59				3.48				3900			0.60			3.69			4140			0.73				3.98			4460
7,900		Ð-	Ð-			Ð-	0.45		3.27				3670		0.27			3.32				3720			0.54				3.52				3950			0.56			3.74			4190			0.69				4.02			4510
8,100		Ð-	Ð-			Ð-	0.40		3.33				3730		0.22			3.36				3770			0.49				3.57				4000			0.51			3.78			4240			0.65				4.07			4560
8,500		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				0.17		3.47			3890				0.40			3.67				4120			0.41				3.83			4290		0.56					4.12			4620
8,900		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				0.00		3.58			4010				0.30			3.77				4230			0.31				3.93			4410		0.47					4.23			4740
9,300		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		0.22			3.87				4340					0.20		4.07			4560				0.37		4.37				4900
9,700		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		0.16			3.95				4430					0.11		4.17			4670				0.30		4.47				5010
10,100		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		0.12			4.03				4520					0.04		4.25			4770				0.23		4.56				5110
10,500		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		Ð-			Ð-				Ð-			Ð	-	Ð-				Ð-	0.17				4.66		5220
10,900		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		Ð-			Ð-				Ð-			Ð	-	Ð-				Ð-	0.12				4.75		5330
11,300		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		Ð-			Ð-				Ð-			Ð	-	Ð-				Ð-	0.07				4.80		5380
11,700		Ð-	Ð-			Ð-	Ð-		Ð-		Ð-				Ð-		Ð-			Ð-		Ð-			Ð-				Ð-			Ð	-	Ð-				Ð-	0.04				4.83		5420
		LEGEND
Bhp	Ð Brake Horsepower
ESP	Ð External Static Pressure (in. wg)
Watts	Ð	Input Watts to Motor
															Table 16 Ð Motor Limitations

															STANDARD EFFICIENCY MOTORS
	Nominal					Maximum														Maximum Amps																		Maximum												Motor
	Hp						Bhp								230						460										575								Watts										Efficiency
		5					5.9								14.6						Ð										Ð								5,030										87.5
		5					5.9								Ð						7.9										6.0								5,030										87.5
							5.9								Ð						7.9										6.0								5,030										87.5
	7.5						8.7								22.0						Ð										Ð								7,334										88.5
	7.5						9.5								Ð						12.0										10.0								8,008										88.5
							9.5								Ð						12.0										10.0								8,008										88.5
	10						10.2								28.0						Ð										Ð								8,502										89.5
	10						11.8								Ð						14.6										12.0								9,836										89.5
							11.8								Ð						14.6										12.0								9,836										89.5
	15						15.3								43.8						Ð										Ð							12,543											91.0
	15						18.0								Ð						21.9										19.0								14,756										91.0
							18.0								Ð						21.9										19.0								14,756										91.0
	20						22.4								62.0						Ð										Ð							18,363											91.0
	20						23.4								Ð						28.7										23.0								19,183										91.0
							23.4								Ð						28.7										23.0								19,183										91.0
	25						28.9								72.0						Ð										Ð							23,511											91.7
	25						29.4								Ð						37.4										31.0								23,918										91.7
							29.4								Ð						37.4										31.0								23,918										91.7
	30						35.6								95.0						Ð										Ð							28,742											92.4
	30						34.7								Ð						48.0										47.0								28,015										92.4
							34.7								Ð						48.0										47.0								28,015										92.4


																	HIGH EFFICIENCY MOTORS
	Nominal						Maximum													Maximum Amps																		Maximum											Motor
		Hp						Bhp										230									460											Watts											Efficiency
		5					5.9											15.8											Ð									4,918											89.5
		5					5.9											Ð									7.9											4,918											89.5
							5.9											Ð									7.9											4,918											89.5
		7.5					8.7											22.0											Ð									7,078											91.7
		7.5					9.5											Ð									12.0											7,728											91.7
							9.5											Ð									12.0											7,728											91.7
		10					10.2											28.0											Ð									8,298											91.7
		10					11.8											Ð									15.0											9,600											91.7
							11.8											Ð									15.0											9,600											91.7
		15					15.3											43.8											Ð									12,273											93.0
		15					18.0											Ð									21.9											14,439											93.0
							18.0											Ð									21.9											14,439											93.0
		20					22.4											58.2											Ð									17,853											93.6
		20					23.4											Ð									28.7											18,650											93.6
							23.4											Ð									28.7											18,650											93.6
		25					28.9											73.0											Ð									23,034											93.6
		25					29.4											Ð									36.3											23,432											93.6
							29.4											Ð									36.3											23,432											93.6
		30					35.6											82.6											Ð									28,374											93.6
		30					34.7											Ð									41.7											27,656											93.6
							34.7											Ð									41.7											27,656											93.6

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 Limitations table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

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Contents Installation, Start-Up Service Instructions Field Fabricate Ductwork Instructions onUnit Leveling Tolerances Dimensions Degrees and InchesRoof Curb Sizes Size WeightUnit Operating 48EJ,EKD044 Ft-in 48EJ,EKD03848EJE038 48EJE044Base Unit Dimensions, 48EW,EY024-034 Base Unit Dimensions, 48EW,EY038-048 48EJ,EK,EW,EYD034 Unit Weight 48EJ,EK,EW,EYD02448EJ,EK,EW,EYD028 48EJ,EK,EW,EYD030 48EJ,EK,EW,EYD038Physical Data Unit 48EJ,EK,EW,EY4442/4602 4668/4828 4955/5115 Air Distribution Ð Thru-the-Bottom Combustion Fan Housing Location Unit Configuration Default Cooling Default Heating VAVField Control Remote Start/Stop Make Electrical Connections LED CCNSIO FLA LRA MCA Mocp Electrical DataRLA LRA Hacr FLA LRAFLA NECHeating, Air Conditioning Qty044 Minimum Circuit AmpsGND Ð Ground Terminal BlockDIP PEC2413 or CCN Connection Approved Shielded CablesManufacturer Cable Part no 8772RED Make Outdoor-Air Inlet AdjustmentsColor Code Recommendations WhiteAdding Seal Strip to Top of Hood Sides Adding Foam Strip to Hood Side Mounting Angle With Tabs Attached to Filter Track Assembly Psychrometric Chart for Enthalpy Control Barometric Relief Damper and Power Exhaust Mounting Details Pressure Transducer Locations START-UP SET Point VFD Supply Air Pressure Set PointPressure Control VFD Building Pressure Signal Level Direct Digital Controls DIP Switch ConguraPotentiometer Signal Levels VdcDIP Switch Factory Settings Power Exhaust Default Set PointsDIP Switch Conguration Airflow 18,000 16,00017,000 19,000528 572 615 656 695 733 769 805 ESP Fan Performance Ð Power ExhaustMotor Limitations Standard Efficiency MotorsSequence of Operation Air Quantity LimitsUser Dened Set Points GAS HEATING, Variable AIR Volume VAV Units HIR DEG. F ResetCOM Smoke Control Modes Device Pressurization Smoke Purge Evacuation Fire ShutdownCompressor Cooling Capacity Staging Table, CV Units With 2 CompressorsStages Lubrication Manufacturer LubricantEvaporator Fan Service and Replacement Typical Gas Heating SectionEvaporator-Fan Motor Replacement Condenser-Fan AdjustmentBelt Tension Adjustment Protective DevicesGas Valve Ifcb AHAIFC TranTypical Power Schematic 48EJ,EK,EW,EY024-034 208/230-3-60 Typical VAV 115-v Control Circuit Typical CV 115-v Control Circuit Typical VAV 24-v Control Circuit Typical CV 24-v Control Circuit Troubleshooting Typical Refrigerant Circuiting 48EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 48EJ,EK,EW,EY048 IGC Control Heating and Cooling IGC Control Board LED Alarms Control Board LED AlarmsTerminal no Assignment I/O Channel Designations Base Module Ð CVI/O Channel Designations Base Module Ð VAV SPTPackaged Service Training START-UP Checklist General

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EW, EY024-048, EK, 48EJ specifications

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 are cutting-edge rooftop air conditioning units designed for commercial applications. These models are renowned for their reliability, energy efficiency, and innovative technologies aimed at providing optimal indoor comfort.

One of the standout features of these units is their advanced cooling and heating capabilities. They employ a multi-stage compressor system that allows for precise temperature control, accommodating various load requirements. This flexibility is particularly beneficial in commercial settings where the cooling load can fluctuate throughout the day.

Energy efficiency is paramount in today’s environmental landscape, and Carrier has ensured that these models meet stringent efficiency standards. They incorporate high-efficiency scroll compressors, which significantly reduce energy consumption while delivering powerful performance. The units are also equipped with variable speed fans that adjust airflow based on demand, further optimizing energy use.

In terms of construction, these rooftop units feature a robust design that enhances durability and longevity. The cabinet is constructed to withstand harsh weather conditions, ensuring reliable performance year-round. Additionally, the units are equipped with corrosion-resistant coatings, particularly useful in coastal environments where salt exposure can be a concern.

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY models utilize advanced controls and connectivity features, allowing for easy integration into building management systems. This connectivity enables remote monitoring and control, facilitating quick response to changing conditions and simplifying maintenance tasks.

Noise reduction is another key characteristic of these models. They are designed with sound-absorbing insulation and low-noise fan blades to ensure quiet operation, making them suitable for noise-sensitive environments such as schools and hospitals.

These units are also available with various options for air filtration and dehumidification. The use of high-efficiency air filters enhances indoor air quality by trapping dust, pollen, and other airborne particles. Enhanced dehumidification capabilities ensure that spaces remain comfortable even in humid conditions.

In conclusion, the Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 rooftop units are engineered to offer exceptional performance, energy efficiency, and durability. With their advanced technologies and user-friendly features, they stand out as reliable solutions for meeting diverse commercial cooling and heating needs, making them a popular choice for many businesses.