The percent of voltage imbalance | Carrier 48HJD005-007 manual

Never operate a motor where a phase imbalance in supply volt-

Table 2A — 48HJ Electrical Data Standard Motor (Units Without Electrical Convenience Outlet)

			NOMINAL	VOLTAGE		COMPRESSOR		OFM	IFM	COMBUSTION	POWER		MINIMUM UNIT
	UNIT		NOMINAL	VOLTAGE						COMBUSTION	SUPPLY		DISCONNECT
	UNIT		VOLTAGE	RANGE						FAN MOTOR	SUPPLY		DISCONNECT
	48HJ		VOLTAGE	RANGE						FAN MOTOR	WITH OUTLET		SIZE*
	48HJ		(V-Ph-Hz)								WITH OUTLET		SIZE*
			(V-Ph-Hz)	Min	Max	RLA	LRA	FLA	FLA	FLA	MCA	MOCP†	FLA	LRA
				Min	Max	RLA	LRA	FLA	FLA	FLA	MCA	MOCP†	FLA	LRA
			208/230-1-60	187	254	16.0	88.0	0.7	4.9	.57	25.6/25.6	35/35	25/25	101/101
	004		208/230-3-60	187	254	10.3	77.0	0.7	4.9	.57	18.5/18.5	25/25	18/18	90/ 90
	(3 Tons)		460-3-60	414	508	5.1	39.0	0.4	2.2	.30	9.0	15	9	46
			575-3-60	518	632	4.2	31.0	0.4	2.2	.30	7.3	15	7	36
			208/230-1-60	187	254	23.7	129.0	0.7	4.9	.57	35.2/35.2	45/45	34/34	142/142
	005		208/230-3-60	187	254	13.5	99.0	0.7	4.9	.57	22.5/22.5	30/30	22/22	112/112
	(4 Tons)		460-3-60	414	508	7.4	49.5	0.4	2.2	.30	11.9	15	12	56
			575-3-60	518	632	5.8	40.0	0.4	2.2	.30	9.3	15	9	45
			208/230-1-60	187	254	28.8	169.0	1.5	8.8	.57	46.3/46.3	60/60	45/45	216/216
	006		208/230-3-60	187	254	17.3	123.0	1.5	5.8	.57	28.9/28.9	35/35	28/28	168/168
	(5 Tons)		460-3-60	414	508	9.0	62.0	0.8	2.6	.30	14.7	20	14	84
			575-3-60	518	632	7.1	50.0	0.8	2.6	.30	11.6	15	11	67
	007		208/230-3-60	187	254	20.5	156.0	1.4	5.8	.57	32.8/32.8	40/40	32/32	200/200
	007		460-3-60	414	508	9.6	70.0	0.6	2.6	.30	15.2	20	15	92
	(6 Tons)		460-3-60	414	508	9.6	70.0	0.6	2.6	.30	15.2	20	15	92
	(6 Tons)		575-3-60	518	632	7.7	56.0	0.6	2.6	.30	12.2	15	13	78
			575-3-60	518	632	7.7	56.0	0.6	2.6	.30	12.2	15	13	78

Table 2B — 48HJ Electrical Data Standard Motor (Units With Electrical Convenience Outlet)

			NOMINAL	VOLTAGE						COMBUSTION	POWER		MINIMUM UNIT
	UNIT		NOMINAL	VOLTAGE		COMPRESSOR		OFM	IFM	COMBUSTION	SUPPLY		DISCONNECT
	UNIT		VOLTAGE	RANGE		COMPRESSOR		OFM	IFM	FAN MOTOR	SUPPLY		DISCONNECT
	48HJ		VOLTAGE	RANGE						FAN MOTOR	WITH OUTLET		SIZE*
	48HJ		(V-Ph-Hz)								WITH OUTLET		SIZE*
			(V-Ph-Hz)	Min	Max	RLA	LRA	FLA	FLA	FLA	MCA	MOCP†	FLA	LRA
				Min	Max	RLA	LRA	FLA	FLA	FLA	MCA	MOCP†	FLA	LRA
			208/230-1-60	187	254	16.0	88.0	0.7	4.9	.57	31.6/31.6	40/40	30/30	106/106
	004		208/230-3-60	187	254	10.3	77.0	0.7	4.9	.57	24.5/24.5	30/30	24/24	95/95
	(3 Tons)		460-3-60	414	508	5.1	39.0	0.4	2.2	.30	11.7	15	11	48
			575-3-60	518	632	4.2	31.0	0.4	2.2	.30	9.5	15	9	38
			208/230-1-60	187	254	23.7	129.0	0.7	4.9	.57	41.2/41.2	50/50	39/39	147/147
	005		208/230-3-60	187	254	13.5	99.0	0.7	4.9	.57	28.5/28.5	35/35	27/27	117/117
	(4 Tons)		460-3-60	414	508	7.4	49.5	0.4	2.2	.30	14.6	20	14	58
			575-3-60	518	632	5.8	40.0	0.4	2.2	.30	11.5	15	11	47
			208/230-1-60	187	254	28.8	169.0	1.5	8.8	.57	52.3/52.3	60/60	50/50	221/221
	006		208/230-3-60	187	254	17.3	123.0	1.5	5.8	.57	34.9/34.9	40/40	34/34	173/173
	(5 Tons)		460-3-60	414	508	9.0	62.0	0.8	2.6	.30	17.4	20	17	86
			575-3-60	518	632	7.1	50.0	0.8	2.6	.30	13.8	20	13	69
	007		208/230-3-60	187	254	20.5	156.0	1.4	5.8	.57	38.8/38.8	45/45	37/37	205/205
	007		460-3-60	414	508	9.6	70.0	0.6	2.6	.30	17.9	20	17	94
	(6 Tons)		460-3-60	414	508	9.6	70.0	0.6	2.6	.30	17.9	20	17	94
	(6 Tons)		575-3-60	518	632	7.7	56.0	0.6	2.6	.30	14.3	20	15	79
			575-3-60	518	632	7.7	56.0	0.6	2.6	.30	14.3	20	15	79

LEGEND

FLA — Full Load Amps

HACR — Heating, Air Conditioning and Refrigeration

IFM — Indoor (Evaporator) Fan Motor

LRA — Locked Rotor Amps

MCA — Minimum Circuit Amps

MOCP— Maximum Overcurrent Protection

NEC — National Electrical Code

OFM — Outdoor (Condenser) Fan Motor

RLA — Rated Load Amps

UL — Underwriters’ Laboratories

*Used to determine minimum disconnect per NEC.

†Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combi-

nation load equipment (refer to NEC Articles 430 and 440), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. UL, Canada units may be fuse or circuit breaker.

Example: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

Average Voltage = 452 + 464 + 455 3

1371

=

3

= 457

Determine maximum deviation from average voltage. (AB) 457 – 452 = 5 v

(BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply volt-

% Voltage Imbalance= 100 x

7

age is greater than 2%. Use the following formula to determine

the percent of voltage imbalance.

	= 100 x	max voltage deviation from average voltage
	= 100 x	average voltage
		average voltage

457

= 1.53%

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.

10

Image 10

Carrier 48HJD005-007 age is greater than 2%. Use the following formula to determine, the percent of voltage imbalance

Contents

INSTALLATION CONTENTSSAFETY CONSIDERATIONS Step 1 - Provide Unit Support Fig. 1 - Roof Curb Details 1′-4″ Fig. 2 - Unit Leveling Tolerances Fig. 3 - Condensate Drain Pan Step 7 - Make Electrical Connections Table 1 - Physical Data Table 1 - Physical Data cont 1/2″ Fig. 5 - Base Unit Dimensions - 48HJ004-0073/4″ Thru-the-Curb Service Connections Step 8 - Adjust Factory-Installed OptionsFig. 7 - Gas Piping Guide With Accessory Fig. 6 - Flue Hood Details Fig. 10 - Field Control Wiring Raceway Fig. 8 - Power Wiring ConnectionsFig. 9 - Low-Voltage Connections With or Without Economizer age is greater than 2%. Use the following formula to determine Never operate a motor where a phase imbalance in supply voltthe percent of voltage imbalance Table 2C - 48HJ High-Static Motor Units Without Electrical Convenience Outlet Fig. 11 - Accessory Field-Installed Humidistat 208/230-V Unit Shown Fig. 16 - Horizontal Durablade Economizer Installation Fig. 13 - Typical Access Panel LocationsFig. 15 - Durablade Economizer Installed in Unit Fig. 14 - Outdoor-Air Hood Details Fig. 19B - Durablade Economizer Minimum Position Damper Setting Wiring HarnessFig. 19A - Durablade Economizer Damper Minimum Position Setting Fig. 20 - Outdoor-Air Thermostat Enthalpy Control Installation Fig. 25 - Exhaust Air Hood Assembly Relief Damper CharacteristicsFig. 24 - Typical Access Panel Locations Fig. 22 - Durablade Economizer Barometric Fig. 27 - Completed Hood Assembly Fig. 28 - Rear EconoMi$er Flange InstallationFig. 26 - Outdoor-Air Hood Assembly Fig. 29 - EconoMi$er Installed Fig. 32 - Wiring Diagram for Power Exhaust System Fig. 31 - EconoMi$er Sensor WiringFig. 33 - Typical Access Panel Locations POWER EXHAUST SYSTEM HIGH VOLTAGE Fig. 35 - EconoMi$er Control Adjustment Fig. 34 - Supply-Air Sensor PlacementTable 4 - Default Potentiometer Settings Potentiometers Factory Settings Fig. 38 - Evaporator-Fan Pulley Adjustment Step 9 - Adjust Evaporator-Fan Speed - AdFig. 37 - Belt-Drive Motor Mounting Table 6 - Evaporator-Fan Motor Data - Standard Motor Table 5A - 48HJ Fan Rpm at Motor Pulley Setting With Standard MotorTable 7 - Evaporator-Fan Motor Data - High-Static Motors Table 9 - Outdoor Sound Power Total Unit Table 8 - Motor Nominal HorsepowerBels Table 12 - 48HJ005 Fan Performance - Vertical Discharge Units With Standard Motor Single-Phase Units 3-Phase Units Table 16 - 48HJ007 Fan Performance - Vertical Discharge Units With Standard Motor Table 18 - 48HJ004 Fan Performance - Horizontal Discharge Units With Standard Motor Table 20 - 48HJ005 Fan Performance - Horizontal Discharge Units With Standard Motor 3-Phase Units Table 27 - FIOP MoistureMiser Dehumidification FIOP - Factory-Installed OptionTable 26 - Economizer Static Pressure Drop in. wg Package Static Pressure Drop in. wg PRE-START-UP START-UP Operating Sequence HeatingTable 28 - Altitude Compensation When the supply-air temperature falls between 57 F and Fig. 39 - MoistureMiser Option Operation Fig. 40 - Cleaning Condenser Coil Fig. 41 - Propping Up Top Panel SERVICELubrication Fig. 42 - Separating Coil Sections Fig. 44 - Cooling Charging Chart Standard 48HJ004 Fig. 43 - Condenser-Fan AdjustmentFig. 45 - Cooling Charging Chart Standard 48HJ005 Fig. 46 - Cooling Charging Chart Standard 48HJ006 Fig. 47 - Cooling Charging Chart Standard 48HJ007 Fig. 48 - Cooling Charging Chart, 48HJ004 with Optional MoistureMiser Dehumidification Package Table 29 - LED Error Code Description Fig. 52 - Burner Section Details Fig. 53 - Burner Tray Details MEDIUM AND HIGH HEAT 48HJE005-007, 48HJF004 - 115,000 BTUH INPUT Fig. 54 - Spark Gap AdjustmentLOW HEAT 48HJE004, 48HJD005-007 - 72,000 BTUH INPUT 48HJF005-007 - 150,000 BTUH INPUT TROUBLESHOOTING Table 30 - LED Error Code Service Analysis Table 31 - Heating Service Analysis Table 32 - Durablade Economizer Service Analysis Table 33 - EconoMi$er Flash Code Identification Table 34 - EconoMi$er TroubleshootingCritical Table 35 - MoistureMiser Dehumidification Subcooler Service Analysis Table 36 - Cooling Service Analysis Compressor operates continuously Fig. 55 - Typical Wiring Schematic and Component Arrangement 208/230 3-Phase Unit Shown LEGEND AND NOTES FOR FIG NOTES FOR FIG Replaces 48HJ-17SI Page II. PRE-START-UP insert checkmark in box as each item is completed START-UP CHECKLIST Remove and Store in Job FileI. PRELIMINARY INFORMATION III. START-UP