Carrier Physical Data Unit 48EZ-A Cont’d, Maximum Gas Flow Capacity, Heating Inputs

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48EZ -- A

Table 1 - Physical Data - Unit 48EZ-A (Cont’d)


UNIT SIZE 48EZ ---			A		48090		48115		48130			60090		60115		60130
NOMINAL CAPACITY ---				ton		4		4		4			5		5		5
OPERATING WEIGHT---				lb	482		482		482			507		507		507
				(kg)	219		219		219			230		230		230
COMPRESSORS										Scroll
Quantity										1
REFRIGERANT (R 410A)---								9.6						12.3
Quantity ---		lb
		(kg )						4.4							5.6
REFRIGERANT METERING DEVICE										TXV
OUTDOOR ORIFICE---			in. (qty)				0.046 (2)							0.052 (2)
		(mm)						1.2							1.3
OUTDOOR COIL					2	...21	2	...21	2	...21		2	...21	2	...21	2	...21
Rows...Fins--- in.
Face Area---		sq ft			13.6		13.6		13.6			17.5		17.5		17.5
OUTDOOR FAN					3100		3100		3100			3500		3500		3500
Nominal Cfm
Diameter---		in.				26		26		26			26		26		26
		(mm)			660		660		660			660		660		660
Motor Hp---		Rpm			1/5 (810)		1/5 (810)		1/5 (810)			1/5 (810)		1/5 (810)		1/5 (810)
INDOOR COIL					3	...17	3	...17	3	...17		3	...17	3	...17	3	...17
Rows...Fins--- in.
Face Area---		sq ft				4.7		4.7		4.7			5.7		5.7		5.7
INDOOR BLOWER					1600		1600		1600			1850		1850		1850
Nominal Cooling Airflow---				(CFM)
Size ---	in.				11x10		11x10		11x10			11x10		11x10		11x10
	(mm)				279x254		279x254		279x254			279x254		279x254		279x254
Motor	---hp					1.0		1.0		1.0			1.0		1.0		1.0
FURNACE SECTION*
Burner Orifice					3	...38	3	...33	3	...31		3	...38	3	...33	3	...31
Natural Gas Qty...Drill Size (Factory Installed)
Propane GasQty...		Drill Size			3	...53	3	...51	3	...49		3	...53	3	...51	3	...49
HIGH --- PRESSURE SWITCH (psig) Cut out---										650 +/ ---		15
Reset (Auto)										420 +/ ---		25
LOSS--- OF---	CHARGE /
LOW--- PRESSURE SWITCH
(Liquid Line) (psig)										20 +/ ---		5
Cut---	out
Reset (auto)										45 +/ ---		10
RETURN---AIR FILTERS †										24x36x1
Throwaway		(in.)
(mm)										(610x914x25)
*Based on altitude of 0 to 2000 ft (0			---610 m).

{Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ft/minute for high ---capacity type. Air filter pressure drop for non ---standard filters must not exceed 0.08 IN. W.C.

}If using accessory filter rack refer to filter rack installation instructions for correct filter size and quantity.

Table 2 – Maximum Gas Flow Capacity*

	NOMINAL	INTERNAL						LENGTH OF PIPE, FT† (m)
	IRON	INTERNAL
		DIAMETER
			10	20	30	40	50	60	70	80	90	100	125	150	175	200
	PIPE,		10	20	30	40	50	60	70	80	90	100	125	150	175	200
	SIZE (IN.)	(IN.)	(3.1)	(6.1)	(9.1)	(12.2)	(15.2)	(18.3)	(21.3)	(24.4)	(27.4)	(30.5)	(38.1)	(46.0)	(53.3)	(61.0)
	SIZE (IN.)		(3.1)	(6.1)	(9.1)	(12.2)	(15.2)	(18.3)	(21.3)	(24.4)	(27.4)	(30.5)	(38.1)	(46.0)	(53.3)	(61.0)
	1/2	.622	175	120	97	82	73	66	61	57	53	50	44	40	—	—
	3/4	.824	360	250	200	170	151	138	125	118	110	103	93	84	77	72
	1	1.049	680	465	375	320	285	260	240	220	205	195	175	160	145	135
	1---1/4	1.380	1400	950	770	600	580	530	490	460	430	400	360	325	300	280
	1---1/2	1.610	2100	1460	1180	990	900	810	750	690	650	620	550	500	460	430

*Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5---IN. W.C. (based on a 0.60 specific gravity gas). Refer to Table 2 and National Fire Protection Association NFPA 54/ANSI Z223.1.

† This length includes an ordinary number of fittings.

Table 3 – Heating Inputs


HEATING INPUT		NUMBER OF		GAS SUPPLY PRESSURE (IN. W.C.)					MANIFOLD PRESSURE
HEATING INPUT		NUMBER OF		Natural{		Propane*{			(IN. W.C.)
(BTUH)		ORIFICES		Natural{		Propane*{			(IN. W.C.)
			Min		Max	Min		Max	Natural{	Propane*†
40,000		2	4.0		13.0	11.0		13.0	3.2∼3.8	10.0∼11.0
60,000		2	4.0		13.0	11.0		13.0	3.2∼3.8	10.0∼11.0
90,000		3	4.0		13.0	11.0		13.0	3.2∼3.8	10.0∼11.0
115,000		3	4.0		13.0	11.0		13.0	3.2∼3.8	10.0∼11.0
130,000		3	4.0		13.0	11.0		13.0	3.2∼3.8	10.0∼11.0
*When a unit is converted to propane, different size orifices must be used. See separate, natural ---							to propane conversion kit instructions.---

{Based on altitudes from sea level to 2000 ft (610 m) above sea level. In U.S.A. for altitudes above 2000 ft (610 m), reduce input rating 4 percent for each addi- tional 1000 ft (305 m) above sea level. In Canada, from 2000 ft (610 m) above sea level to 4500 ft (1372 m) above sea level, derate the unit 10 percent.

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Contents Table of Contents Safety ConsiderationsCheck Equipment Receiving and InstallationIntroduction Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Personal Injury or Property Damage Rig and Place UnitProvide Clearances HazardConnect Condensate Drain Install Flue HoodInstall Gas Piping InspectionFire or Explosion Hazard Sediment TrapPhysical Data Unit 48EZ-A Unit Size 48EZMaximum Gas Flow Capacity Physical Data Unit 48EZ-A Cont’dHeating Inputs Alternate Method Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge Unit Component Damage HazardSupply Duct Panels High-Voltage Connections Install Electrical ConnectionsSpecial Procedures for 208-V Operation Control Voltage ConnectionsTransformer Protection Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP FIRE, EXPLOSION, Electrical Shock HazardCheck for Refrigerant Leaks Start-up Heating and Make Adjust- mentsSTART-UP Unit Sequence of OperationCheck Gas Input Adjust Gas InputCheck Heating Control Unit Damage HazardRollout Switch Airflow and Temperature RiseLimit Switches Check Burner FlameIndoor Airflow and Airflow Adjustments Start-up Cooling and Make Adjust- mentsChecking and Adjusting Refrigerant Charge Checking Cooling Control OperationContinuous Fan Operation Two Cooling Fan Speeds Set-up Dehumidification feature usedGas Heating Fan Speed Set-up Color Coding for Indoor Fan Motor LeadsFilter Pressure Drop Table IN. W.C 48EZ-A Wet Coil Pressure Drop IN. W.C741 638 547 415 Heating Low Blue 1234 1168 1093 1021 961 894 825 759 687 Heating Low Blue 1736 1695 1642 1601 1553 1512 1465 1427 1381 65oF Heating 1927 1893 1858 1824 1791 1759 1720 1689 1640 65oF Heating 48EZ a 208/230-3-60 Wiring Diagram, Unit 48EZ-A Cooling Charging Table-Subcooling Air Filter MaintenanceCleaning the Blower Motor and Wheel Indoor Blower and MotorBurner Ignition Limit SwitchInduced Draft combustion air Blower Assembly Main BurnersOutdoor Fan Electrical Controls and WiringRefrigerant Circuit Gas Input Pressure SwitchesLoss of Charge Switch Indoor AirflowCopeland Scroll Compressor Puron Refrigerant High-Pressure SwitchExplosion Hazard Refrigerant System Unit Operation and Safety HazardCompressor Oil START-UP Checklist TroubleshootingPuronr R-410A Quick Reference Guide Troubleshooting Guide Cooling or Heat Pump Heating Mode Symptom Cause RemedyTroubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesPreliminary Information Model no TemperaturesRemove and Store in Job Files III. START-UP Electrical Supply Voltage Compressor AmpsCatalog No 48EZ---06SI

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48EZ-A specifications

The Carrier 48EZ-A and 48VT-A are two advanced rooftop unit air conditioners that exemplify innovation and efficiency in HVAC technology. Designed for commercial applications, these units provide optimal comfort while ensuring energy conservation and reliability.

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