Carrier NP034-074 User Manual

48DJ,DK,NP034-074 50DJ,DK,DW,DY,NB,NP034-074 Single Package Heating and Cooling Units

Installation, Start-Up and

Service Instructions

CONTENTS

Page

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

Rigging and Unit Placement . . . . . . . . . . . . . . . . . . 2

Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Roof Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Slab Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Field-Fabricated Ductwork . . . . . . . . . . . . . . . . . . . . 6

Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Install Outdoor Hoods . . . . . . . . . . . . . . . . . . . . . . . 10

·UNIT SIZES 034 AND 044

·UNIT SIZES 054-074

Outdoor-Air Inlet Adjustments . . . . . . . . . . . . . . . 10

·MANUAL OUTDOOR-AIR DAMPER

·ECONOMIZER SETTINGS

Field Wire Routing . . . . . . . . . . . . . . . . . . . . . . . . . . 17

·UNIT SIZES 034 AND 044

·UNIT SIZES 054-074

Field Electrical Connections . . . . . . . . . . . . . . . . . 17

·POWER WIRING

·CONTROL WIRING

Gas Piping (48 Series Units Only) . . . . . . . . . . . . 36

Installing Flue/Inlet Hoods (48 Series Units

Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

·UNIT SIZES 034 AND 044

·UNIT SIZES 054-074

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-41

Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . 38

Evaporator-Fan Shipping Brackets . . . . . . . . . . . 38

·UNIT SIZES 034 AND 044

·UNIT SIZES 054-074

Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Refrigerant Service Valves . . . . . . . . . . . . . . . . . . . 38

Crankcase Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Gas Manifold Pressure (48 Series

Units Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Unit Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Leak Test and Dehydration . . . . . . . . . . . . . . . . . . 39

Evaporator-Fan Belts, Pulleys, and Sheaves . . 39

Condenser Fans and Motors . . . . . . . . . . . . . . . . . 40

Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Economizer Inlet Screens . . . . . . . . . . . . . . . . . . . 40

Economizer Dampers . . . . . . . . . . . . . . . . . . . . . . . 40

25% Outdoor-Air Damper . . . . . . . . . . . . . . . . . . . . 40

Initial Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41,42

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Operating Sequences . . . . . . . . . . . . . . . . . . . . . . . 41

·COOLING, UNITS WITHOUT ECONOMIZER

·HEATING, UNITS WITHOUT ECONOMIZER

Page

·COOLING, UNITS WITH ECONOMIZER

·HEATING, UNITS WITH ECONOMIZER

·VENTILATION AIR CIRCULATION (Continuous Fan)

·AUTOMATIC CHANGEOVER USING AUTOMATIC CHANGEOVER THERMOSTAT

Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . 42

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-53

Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

·COMPRESSORS

·LIQUID SERVICE VALVES, FILTER DRIERS, AND SIGHT GLASSES

·EVAPORATOR-FAN MOTORS, PULLEYS, AND BELTS

·POWER EXHAUST MOTORS, PULLEYS, AND BELTS

·UNIT CONTROL BOX

·GAS HEAT SECTION (48 Series Units Only)

·MAIN AND PILOT BURNERS (48 Series Units Only)

·FLUE GAS PASSAGEWAYS (48 Series Units Only)

·COMBUSTION AIR BLOWER (48 Series Units Only)

·ECONOMIZER DAMPER MOTOR

·ELECTRIC HEATER CONTROL BOX (50 Series Units Only)

·HEATER BOX (50 Series Units Only)

·25% OUTDOOR-AIR DAMPER

·MODULATING POWER EXHAUST DAMPER MOTOR

·RETURN-AIR FILTERS

·CONDENSER FANS AND FAN MOTORS

·INLET GUIDE VANE MOTOR

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

·COMPRESSORS

·FAN SHAFT BEARINGS

·INLET GUIDE VANE BEARINGS (Units With Optional Inlet Guide Vanes)

·FAN MOTOR BEARINGS

·DOOR HINGES

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

·EVAPORATOR FAN AND POWER EXHAUST MOTOR PLATE

·MODULATING POWER EXHAUST DIFFERENTIAL PRESSURE SWITCH

·INLET GUIDE VANE DIFFERENTIAL PRESSURE SWITCH (Units With Optional Inlet Guide Vanes and Static Pressure Control)

·BELT INSTALLATION AND TENSIONING

·PULLEY ALIGNMENT

·INSTALLING ALTERNATE MOTOR PULLEY (Evaporator Fan Only)

·CONDENSER FAN ADJUSTMENT

·25% OUTDOOR-AIR DAMPER

·REFRIGERANT CHARGE

·PILOT LIGHT OFF (48 Series Units Only)

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book	1	1		PC 111	Catalog No. 564-818	Printed in U.S.A.	Form 48/50D,N-9SI	Pg 1	3-96	Replaces: 48DJ,DK-3SI;
Tab	1a	1b								48/50NB,NP-1SI; 50DJ,DK-9SI

CONTENTS (cont)

·AUTOMATIC PILOT ADJUSTMENT (48 Series Units Only)

·GAS VALVE ADJUSTMENT (48 Series Units Only)

·MAIN BURNER ADJUSTMENT (48 Series

Units Only)

Main Burner Removal (48 Series Units Only) . . 50

Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 50

Refrigerant Feed Components . . . . . . . . . . . . . . . 50

Thermostatic Expansion Valve (TXV) . . . . . . . . . 50

Moisture/Liquid Indicator . . . . . . . . . . . . . . . . . . . . 51

Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Liquid Line Service Valve . . . . . . . . . . . . . . . . . . . . 51

Compressor Discharge Service Valve . . . . . . . . 51

Compressor Suction Service Valve . . . . . . . . . . . 51

Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . 51

·COMPRESSOR PROTECTION

·EVAPORATOR-FAN MOTOR PROTECTION

·CONDENSER-FAN MOTOR PROTECTION

·HIGHAND LOW-PRESSURE SWITCHES

Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Control Circuit, 115 V . . . . . . . . . . . . . . . . . . . . . . . 52

Control Circuit, 24 v . . . . . . . . . . . . . . . . . . . . . . . . . 52

Electric Heat (50 Series Units Only) . . . . . . . . . . 52

·OVERCURRENT

·OVERTEMPERATURE

Gas Heat (48 Series Units Only) . . . . . . . . . . . . . . 52

·LIMIT SWITCHES

·ROLLOUT SWITCH

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 52-69

Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

·ECONOMIZER MOTOR CHECKOUT

·ECONOMIZER CONTROL BOARD CHECKOUT

Unit Control Board Checkout . . . . . . . . . . . . . . . . 53

·BASIC CHECK

·DETAILED CHECK

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1

GENERAL

This installation instruction contains base unit installation, start-up, and service instructions only. For complete information on PIC (Product Integrated Controls) and variableair volume (VAV) controls and troubleshooting, refer to appropriate Controls and Troubleshooting literature also enclosed in this literature packet.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and quali®ed service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and ®lters and replacing ®lters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes, including ANSI (American National Standards Institute) Z223.1. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have ®re extinguisher available for all brazing operations.

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you cannot reach your gas supplier, call the ®re department.

Do not store or use gasoline or other ¯ammable vapors and liquids in the vicinity of this or any other appliance.

Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information, consult a quali®ed installer, service agency, or the gas supplier.

Disconnect gas piping from 48 Series units when leak testing at pressures greater than 0.5 psig. Pressures greater than 0.5 psig will cause gas valve damage resulting in a hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig, it must be replaced. When pressure testing ®eld-supplied gas piping at pressures of 0.5 psig or less, the unit connected to such piping must be isolated by manually closing the gas valve.

INSTALLATION

Rigging and Unit Placement Ð Inspect unit for transportation damage. File claim with transportation agency. Do not drop unit; keep upright. Use spreader bars over unit to prevent sling or cable damage. Sheets of plywood placed along the condenser coils will provide additional protection. All lifting lugs MUST be used when lifting unit. Level by using unit frame as a reference. See Fig. 1 for information. Unit and accessory weights are shown in Tables 1A, 1B, and 2. Weight distribution and center of gravity can be found in Fig. 2.

Roof Curb Ð Assemble and install as described in instructions shipped with the accessory. Accessory roof curb and information required to ®eld fabricate a roof curb is shown in Fig. 3A-3C. Install insulation, cant strips, roo®ng and counter ¯ashing as required. For unit condensate drains to function properly, curb must be level or within tolerances shown in Fig. 3A-3C.

Roof Mount Ð Check building codes for weight distribution requirements. Unit weight is shown in Tables 1A and 1B. Unit may be mounted on class A, B, or C roo®ng material.

Slab Mount Ð Provide a level concrete slab that extends beyond unit cabinet at least 6 inches. Make a slab 8 in. thick with 4 in. above grade. Use gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing air¯ow.

2

NOTES:

1.Sizes 034,044: Rig with 4 cables and spread with two 95 in. (2413 mm) and 2 8A 1 A8 long spreader bars.

Sizes 054-074: Rig with 4 cables and spread with four 95 in. (2413 mm) and 2 8A 1 B 1 A8 long spreader bars.

2.Center of gravity includes economizer.

1.All panels must be in place when rigging.

2.Unit is not designed for handling by forklift truck.

RIGGING WEIGHTS AND DIMENSIONS

UNIT	UNIT WEIGHT*		A				B
	Lb	Kg	in.		mm	in.		mm
48DJD,DKD,NPD034	5941	2694.8	86.0		2185	109.4		2780
48DJE,NPE034	6070	2753.4				110.4		2804
48DJD,DKD,NPD044	6841	3103.1	92.6		2353	127.6		3240
48DJE,NPE044	6970	3161.6				128.6		3267
48DJD,DKD,NPD054	9230	4186.7
48DJE,NPE054	9350	4241.2	121.5		3086	126.8		3221
48DJD,DKD,NPD064	9530	4322.8
48DJE,NPE064	9650	4377.2
48DJD,DKD,NPD074	9950	4513.3	134.7		3421	134.7		3421
48DJE,NPE074	10,080	4572.3
50DJ,DK,NP034	5700	2585.5	84.8		2153	120.8		3067
50DW,DY,NB034	6270	2844.1	76.4		1940	102.5		2604
50DJ,DK,NP044	6350	2880.4	92.6		2353	126.6		3216
50DW,DY,NB044	6920	3138.9	86.0		2185	108.4		2753
50DJ,DK,NP054	8230	3733.1	120.8		3066	126.8		3221
50DW,DY,NB054	8780	3982.6	109.0		2769	109.0		2769
50DJ,DK,NP064	8530	3869.2	120.9		3071	120.9		3071
50DW,DY,NB064	9080	4119.7	120.8		3066	126.8		3221
50DJ,DK,NP074	8960	4064.3	131.7		3345	137.6		3495
50DW,DY,NB074	9500	4309.2	109.0		2769	109.0		2769

*Includes optional economizer.

Fig. 1 Ð Rigging Label

If roof curb is not used, support unit with steel beams along its entire length and then support steel as required. As a minimum, unit must be supported across its width at each lifting lug location.

Positioning Ð Provide clearance around and above unit for air¯ow, safety, and service access. Do not restrict top (area above condenser fans) in any way. Allow at least 6 ft on all sides for rated performance, code compliance, and service.

Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air.

On units equipped with or power exhaust option, high velocity air is exhausted out the hoods. Unit should be positioned with at least 10 ft clearance between the exhaust hoods and any obstruction. Although unit is weatherproof, guard against water from higher level runoff and overhangs.

3

Table 1A Ð Physical Data; 034, 044 Units

BASE UNIT*			034				044
NOMINAL CAPACITY (tons)			30				40
OPERATING WEIGHT (lb)
Base Unit
48 Series, Low Heat			5641				6541
48 Series, High Heat			5770				6670
50 Series, Horizontal Discharge			5970				6620
50 Series, Vertical Discharge			5400				6050
With Economizer
48 Series, Low Heat			5941				6841
48 Series, High Heat			6070				6970
50 Series, Horizontal Discharge			6270				6920
50 Series, Vertical Discharge			5700				6350
COMPRESSORS				Semi-Hermetic
Quantity...Type			2...06D				2...06E
Capacity Steps (%)		17, 33, 50, 66, 83, 100				25, 50, 75, 100
Number of Refrigerant Circuits			2				2
REFRIGERANT
Operating Charge (lb), Sys 1/Sys 2			29.0/29.0				40.0/40.0
Without Hot Gas Bypass
With Hot Gas Bypass			31.0/29.0				42.0/40.0
CONDENSER COILS				3¤8-in. Tube Diameter
Quantity			2				2
Rows...Fins/in.			3...15.0				3...15.0
Aluminum
Copper (Optional)			3...13.7				3...13.7
Total Face Area (sq ft)			37.5				50.0
EVAPORATOR COILS				1¤2-in. Tube Diameter
Quantity			1				2
Rows...Fins/in.			3...15.0				3...15.0
Total Face Area (sq ft)			32.1				45.5
Refrigerant Feed Device...No. per Circuit			TXV...1				TXV...2
HEATING SECTION (48 Series Units Only)		Low Heat		High Heat		Low Heat		High Heat
Number of Heat Exchangers		6		12		6		12
Input (MBtuh)		264		529		264		529
Output (MBtuh)		211		423		211		423
Temperature Rise Range (F)		0-30		15-45		0-30		15-45
Efficiency (%)		79		79		79		79
Burner Ori®ce Diameter
Quantity (in. ...drill no.)		6 (.1285...30)		12 (.1285...30)		6 (.1285...30)		12 (.1285...30)
Pilot Ori®ce Diameter
Quantity (in. ...drill no.)		1 (.076...48)		2 (.076...48)		1 (.076...48)		2 (.076...48)
Firing Stages		2		2		2		2
Number of Gas Valves		1		2		1		2
CONDENSER FANS				Propeller Type
Quantity...Diameter (in.)			2...30				3...30
Nominal Cfm			18,600				26,000
Motor Hp...Rpm			1.0...1140				1.0...1140
EVAPORATOR FAN				Centrifugal 25 x 25 in.
Nominal Cfm			10,500				14,000
Maximum Allowable Cfm			15,000				20,000
Maximum Allowable Rpm			900				900
Shaft Diameter at Pulley (in.)			111¤16				111¤16
EVAPORATOR-FAN MOTOR AND DRIVE				(Any motor available on any unit)
Motor Hp		7.5		10.0		15.0		20.0
Motor Frame Size		213T		215T		254T		256T
Efficiency at Full Load (%)
Standard Efficiency		82.9		85.6		84.5		87.5
High Efficiency²		Ð		89.5		90.0		91.0
Fan Pulley Pitch Diameter (in.)		13.7		13.7		13.7		13.7
Motor Pulley Pitch Diameter (in.)		34.4		4.3		4.9		5.5
Resulting Fan Rpm		405		510		580		660
Belts	Quantity...Model No.
48 Series and 50 Series, Horizontal Discharge		2...BX60		2...5VX630		2...5VX630		2...5VX630
50 Series, Vertical Discharge		2...BX60		2...5VX630		2...5VX630		2...5VX630
Center Distance Range (in.)
48 Series and 50 Series, Horizontal Discharge		17.74...14.30		17.74...14.30		17.63...14.01		17.63...14.01
50 Series, Vertical Discharge		19.86...15.87		19.86...15.87		19.04...15.00		19.04...15.00
OPTIONAL POWER EXHAUST		Centrifugal, 15 x 15 in. (Any motor available on any unit)
Quantity...Motor Hp		2...3.0		2...5.0				2...7.5
Motor Frame Size		56HZ		184T				213T
Efficiency at Full Load (%)		81.0		84.0				82.9
Fan Pulley Pitch Diameter (in.)		6.9		6.9				6.9
Motor Pulley Pitch Diameter (in.)		3.35		4.12				5.0
Shaft Diameter at Pulley (in.)		13¤16		13¤16				13¤16
Resulting Fan Rpm		843		1040				1264
Maximum Allowable Rpm		1300		1300				1300
Belts	Quantity...No.	2...3VX670		2...3VX670				2...3VX710
FILTERS
Standard Efficiency Throwaway (Standard)		12...20 x 25 x 2				12...20 x 25 x 2
Quantity...Size (in.)		4...16 x 20 x 2				4...16 x 20 x 2
Medium Efficiency (30%) Pleated (Optional)		12...20 x 25 x 2				12...20 x 25 x 2
Quantity...Size (in.)		4...16 x 20 x 2				4...16 x 20 x 2
High Efficiency (90%) Bag Filters with Pre®lters (Optional)		6...20 x 24 x 22				6...20 x 24 x 22
Quantity...Size (in.)		6...20 x 20 x 22				6...20 x 20 x 22

TXV Ð Thermostatic Expansion Valve

*Data is for all 48 and 50 Series units of the size listed unless otherwise speci®ed. ²Not available on 575-v units.

4

Table 1B Ð Physical Data; 054-074 Units

BASE UNIT*	054					064					074
NOMINAL CAPACITY (tons)		50					60					75
OPERATING WEIGHT (lb)
Base Unit
48 Series, Low Heat	8700					9000					9420
48 Series, High Heat	8820					9120					9550
50 Series, Horizontal Discharge	8250					8550					8970
50 Series, Vertical Discharge	7700					8000					8430
With Economizer
48 Series, Low Heat	9230					9530					9950
48 Series, High Heat	9350					9650					10,080
50 Series, Horizontal Discharge	8780					9080					9500
50 Series, Vertical Discharge	8230					8530					8960
COMPRESSORS						Semi-Hermetic
Quantity...Type	2...06E					2...06E					2...06E
Capacity Steps (%)	20, 40, 60, 80, 100					17, 33, 50, 66, 83, 100				14, 28, 43, 71, 85, 100
Number of Refrigerant Circuits		2					2					2
REFRIGERANT
Operating Charge (lb), Sys 1/Sys 2
Without Hot Gas Bypass	59.0/44.5					61.0/61.0					70.5/64.5
With Hot Gas Bypass	62.0/44.5					64.0/61.0					73.5/64.5
CONDENSER COILS						3¤8-in. Tube Diameter
Quantity		4					4					4
Rows...Fins/in.
Aluminum	2...17.0, 3...17.0					3...17.0					3...17.0
Copper (Optional)	2...15.7, 3...15.7					3...15.7					3...15.7
Total Face Area (sq ft)	72.4					72.4					108.4
EVAPORATOR COILS						1¤2-in. Tube Diameter
Quantity		2					2					2
Rows...Fins/in.	3...17.0					4...17.0					4...17.0
Total Face Area (sq ft)	61.5					61.5					61.5
Refrigerant Feed Device...	TXV...2					TXV...2					TXV..2
No. per Circuit
HEATING SECTION (48 Series Units Only)	Low Heat		High Heat			Low Heat		High Heat		Low Heat			High Heat
Number of Heat Exchangers	12		18			12		18			12		18
Input (MBtuh)	540		810			540		810			540		810
Output (MBtuh)	432		648			432		648			432		648
Temperature Rise Range (F)	5-35		15-45			5-35		15-45			5-35		15-45
Efficiency (%)	80		80			80		80			80		80
Burner Ori®ce Diameter
Quantity (in. ...drill no.)	12 (.1285...30)		18 (.1285...30)			12 (.1285...30)		18 (.1285...30)		12 (.1285...30)			18 (.1285...30)
Pilot Ori®ce Diameter
Quantity (in. ...drill no.)	2 (.076...48)		3 (.076...48)			2 (.076...48)		3 (.076...48)		2 (.076...48)			3 (.076...48)
Firing Stages	2		2			2		2			2		2
Number of Gas Valves	2		3			2		3			2		3
CONDENSER FANS						Propeller Type
Quantity...Diameter (in.)		4...30				4...30					5...30
Nominal Cfm		40,000				40,000					50,000
Motor Hp...Rpm	1.0...1140					1.0...1140					1.0...1140
EVAPORATOR FAN						Centrifugal 30 x 27 in.
Nominal Cfm		17,500				21,000					24,500
Maximum Allowable Cfm		25,000				30,000					30,000
Maximum Allowable Rpm		750				750					750
Shaft Diameter at Pulley (in.)		111¤16				111¤16					111¤16
EVAPORATOR-FAN MOTOR AND DRIVE						(Any motor available on any unit)
Motor Hp	15.0			20.0				25.0					30.0
Motor Frame Size	254T			256T				284T					286T
Efficiency at Full Load (%)
Standard Efficiency	84.5			87.5				87.1					88.3
High Efficiency²	90.0			91.0				91.7					92.4
Fan Pulley Pitch Diameter (in.)	13.7			13.7				13.7					15.5
Motor Pulley Pitch Diameter (in.)	4.5				5.1			5.5					5.9
Resulting Fan Rpm	555			625				660					700
Belts Quantity...Model No.
48 Series and 50 Series, Horizontal Discharge	2...5VX1120			2...5VX1150				2...5VX1150					2...5VX1180
50 Series, Vertical Discharge	2...5VX1230			2...5VX1230				2...5VX1230					2...5VX1230
Center Distance Range (in.)
48 Series and 50 Series, Horizontal Discharge	48.25...44.00			48.25...44.00				48.50...44.25					48.50...44.25
50 Series, Vertical Discharge	44.25...39.75			44.25...39.75				44.00...40.00					44.00...40.00
OPTIONAL POWER EXHAUST			Centrifugal, 18 x 15 in. (Any motor available on any unit)
Quantity...Motor Hp	2...5.0					2...7.5					2...10.0
Motor Frame Size	184T					213T					215T
Efficiency at Full Load (%)	84.0					82.9					85.6
Fan Pulley Pitch Diameter (in.)	10.6					10.6					10.6
Motor Pulley Pitch Diameter (in.)		4.5					5.0					5.6
Shaft Diameter at Pulley (in.)	17¤16					17¤16					17¤16
Resulting Fan Rpm	740					820					920
Maximum Allowable Rpm	925					925					925
FILTERS
Standard Efficiency
Throwaway (Standard)	15...20 x 25 x 2					15...20 x 25 x 2					15...20 x 25 x 2
Quantity...Size (in.)	5...16 x 20 x 2					5...16 x 20 x 2					5...16 x 20 x 2
Medium Ef®ciency (30%) Pleated (Optional)	15...20 x 25 x 2					15...20 x 25 x 2					15...20 x 25 x 2
Quantity...Size (in.)	5...16 x 20 x 2					5...16 x 20 x 2					5...16 x 20 x 2
High Efficiency (90%) Bag Filters
with Pre®lters (Optional)	6...20 x 24 x 22					6...20 x 24 x 22					6...20 x 24 x 22
Quantity...Size (in.)	6...24 x 24 x 22					6...24 x 24 x 22					6...24 x 24 x 22

TXV Ð Thermostatic Expansion Valve

*Data is for all 48 and 50 Series units of the size listed unless otherwise speci®ed. ²Not available on 575-v units.

5

Table 2 Ð Operating Weights of Options and Accessories

	OPTION OR ACCESSORY			UNIT SIZE
		034	044	054	064	074
	Roof Curb	450	480	515	515	515
	48DJ,DK,NP
		450	480	560	560	560
	50DW,DY,NB
		380	465	515	515	515
	50DJ,DK,NP
	Condenser Section Roof Curb	Ð	Ð	540	540	625
	Economizer	300*	300*	530*	530*	530*
	Power Exhaust	600*	600*	710*	710*	710*
	Barometric Relief	200	200	200	200	200
	High-Efficiency Filters	20	20	20	20	20
	Bag ®lters	35	35	40	40	40
	Hail Guard	120	150	145	145	210
	Copper Condenser Coil Fins	180	235	235	235	420
	Electric Heat²	150	150	150	150	150
	Inlet Guide Vanes	95	95	115	115	115

*Includes hood.

²50 Series vertical discharge units.

UNIT CENTER OF GRAVITY AND CORNER WEIGHTS

UNIT			CORNER WEIGHT (lb)			DIMENSIONS (Ft-in.)
		1	2	3	4	A	B
	034	1754	1213	1216	1758	14- 9	3- 8
	044	2035	1382	1385	2039	17- 3	3- 8
48DJD,DKD,NPD	054	2334	2276	2281	2339	19- 7	3-10
	064	2431	2328	2334	2437	19- 7	3-10
	074	2452	2518	2523	2457	21- 0	3-10
	034	1781	1251	1253	1785	14- 8	3-10
	044	2057	1424	1428	2061	17- 2	3-10
48DJE,NPE	054	2375	2295	2300	2380	19- 7	3-10
	064	2393	2373	2378	2506	19- 7	3-10
	074	2494	2541	2546	2499	21- 0	3-10
	034	1864	1268	1271	1867	13- 3	3-10
	044	2070	1387	1389	2074	15-10	3-10
50DW,DY,NB	054	2381	2005	2009	2385	19-10	3-10
	064	2461	2074	2078	2467	19-10	3-10
	074	2551	2194	2199	2556	21- 3	3-10
	034	1674	1173	1175	1678	13- 9	3-10
	044	1879	1292	1295	1884	16- 3	3-10
50DJ,DK,NP	054	2090	2021	2025	2094	18- 2	3-10
	064	2188	2073	2077	2192	18- 2	3-10
	074	2212	2263	2269	2216	21- 3	3-10

NOTE: Weights include economizer.

Fig. 2 Ð Weight Distribution and Center of Gravity

Field-Fabricated Ductwork Ð Units are designed for vertical supply/return only. Field-fabricated ductwork should be attached to the roof curb. Supply and return duct dimensions are shown in Fig. 3A-3C.

To attach ductwork to roof curb, insert duct approximately 10 to 11 in. up into roof curb. Connect ductwork to 14-gage roof curb material with sheet metal screws driven from inside of the duct.

Secure all ducts to the building structure, using ¯exible duct connectors between roof curb and ducts as required. Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier. Outlet grilles must not lie directly below unit discharge. The return duct must have a 90-degree elbow before opening into the building space if unit is equipped with power exhaust.

Design supply duct strong enough to handle expected static pressures.

6

	UNIT			UNIT			X			Y
	MODEL			SIZE		mm		ft-in.	mm	ft-in.
	48DJ,DK,NP		034		6606		21-81¤16		4056	13- 311¤16
	50DW,DY,NB		034
	50DJ,DK,NP		034		6131		20-13¤8		3311	10-103¤8
	48DJ,DK,NP		044		7825		25-81¤16		4893	16- 05¤8
	50DW,DY,NB		044
	50DJ,DK,NP		044		7344		24-11¤8		4141	13- 71¤16

NOTES:

1.Roof curb is shipped unassembled.

2.Roof curb: 14 gage (VA03-56) steel.

3. Dimensions in [ ] are millimeters.

NOTE: To prevent the hazard of stagnant water build-up in the drain pan of the indoor-air section, unit can only be pitched as shown.

Fig. 3A Ð Roof Curb; 034, 044 Units

7

UNIT		UNIT				X			Y		Z
MODEL		SIZE		mm		ft-in.		mm	ft-in.	mm	ft-in.
48DJ,DK,NP		054,064		2474		8-13¤8		8476	27-911¤16	6965	22-103¤16
50DW,DY,NB		054,064
50DJ,DK,NP		054,064		2458		8-03¤4		7444	24-51¤16	5933	19- 59¤16
48DJ,DK,NP		074		3383		11-13¤16		8476	27-911¤16	6965	22-103¤16
50DW,DY,NB		074
50DJ,DK,NP		074		3367		11-09¤16		7444	24-51¤16	5933	19- 59¤16

NOTES:

1.Roof curb is shipped unassembled.

2.Roof curb: 14 gage (VA03-56) steel.

3. Dimensions in [ ] are millimeters.

4.Suggested hole location for ®eld wiring through roof curb (holes to be ®eld drilled).

NOTE: To prevent the hazard of stagnant water build-up in the drain pan of the indoor-air section, unit can only be pitched as shown.

Fig. 3B Ð Roof Curb; 054-074 Units

8

UNIT	DIMENSION X
SIZE	mm	Ft-in.
054,064	270	0-105¤8
074	255	0-101¤16

UNIT LEVELING TOLERANCES

DIMENSIONS* (degrees and inches)

A				B
Deg		in.	Deg		in.
1.0		2.0	.50		.75

*From edge of unit to horizontal.

water

Fig. 3C Ð Condenser Section Roof Curb (054-074 Units Only)

9

Condensate Drains Ð See Fig. 4A-4D and Fig. 5 for drain locations. The drain assemblies, each consisting of a 10-gage plate with a 11¤4-in. half coupling welded to it, are shipped in the unit fan section. Also included are 16-gage seal plates to cover the drain holes not being used. Open the access door marked FAN SECTION to ®nd the drain assemblies, seal plates, and 4 screws for each mounting taped to the unit basepan.

After the unit has been set in place on the roof:

1.Select the appropriate drain locations. The 034 units have 6 drain holes (3 per side), and the 044-074 units have 8 drain holes (4 per side). Two holes on each side must be selected for condensate drains as shown in Fig. 5, and the remaining holes must be sealed.

2.Remove the drain assemblies and attach them to the bottom of the unit base rails at the preferred drain locations using the screws provided. See Fig. 6.

NOTE: Use a trap at least 4-in. deep.

3.Cover the remaining drain holes with the seal plates and screws provided. See Fig. 7.

4.Apply a bead of RTV or similar sealant around the drain assemblies and seal plates where they attach to the base rail. See Fig. 8.

NOTE: If unit is slab mounted, holes will need to be drilled in the side of the base rail and the holes factory-drilled in the bottom of the base rail will need to be plugged.

Install Outdoor Hoods

UNIT SIZES 034 AND 044

25% Outdoor-Air Hoods (Units Without Economizer

Option)

1.Outdoor-air hoods are shipped bolted to the unit in a shipping position. Remove the 6 screws holding each 25% air hood shipping cover in place.

2.Replace the 6 screws.

3.Remove the holddown screw from each upper corner of each hood.

4.Pivot hoods outward (2 hoods total).

5.Install 17 screws around outside of each hood. (Screws are in the fastener package taped to the basepan inside the fan section.)

6.Apply a bead of RTV or similar sealant to corner of each hood at pivot point to prevent water leaks. See Fig. 9.

Economizer Hoods (Units With Economizer Option) Ð Follow the same procedure described in 25% Outdoor-Air Hoods section above.

UNIT SIZES 054-074

25% Outdoor-Air Hoods Ð The outdoor-air hoods are factory installed on the 054-074 units.

Economizer Hoods (Units With Economizer Option)

1.Remove the 6 screws holding each of the 4 economizer shipping covers in place.

2.Replace the screws.

3.Remove the holddown screw from each upper corner of each economizer hood.

4.Pivot hoods outward. (There is a total of 4 hoods.)

5.Install 18 screws, (5 each side, 6 top, and 2 bottom), around the outside of each hood. (Screws are in the fastener package taped to the basepan inside the fan section.)

6.Apply a bead of RTV or similar sealant to corner of economizer hood at pivot point to prevent water leaks. (See Fig. 9.)

Outdoor-Air Inlet Adjustments

MANUAL OUTDOOR-AIR DAMPER (Units Without Economizer Option) Ð All units except those equipped with a factoryinstalled economizer have a manual outdoor-air damper to provide ventilation air. This damper can be preset to admit up to 25% outdoor air into the return-air compartment. To adjust, loosen the blade limiter screws as shown in Fig. 10 and move the damper to the desired position. Then retighten the blade limiter screws to secure the damper. See Fig. 10. (To make this adjustment, it is necessary to remove the screens covering the hood opening and make adjustments from inside the hood.)

ECONOMIZER SETTINGS

Enthalpy Sensor (See Fig. 11.) Ð This sensor is located behind the ®lters in the end economizer hood (the upper hood on sizes 054-074). See Fig. 12. For maximum bene®t of outdoor air, set enthalpy sensor control to the A setting. At this setting, when the relative humidity is 50%, and the outdoor air is below 74 F, the sensor's relay contacts will be closed. See Fig. 13 and 14.

NOTE: Enthalpy control setting dial is on the economizer motor.

Mixed-Air Thermistor (MAT) Ð This control set point adjustment is on the top of the economizer motor. This motor is located in the return-air section, and is accessed by opening the access panel marked FILTER SECTION. See Fig. 15. Set MAT set point adjustment dial to the desired setting. The factory setting is 55 F ± 5° F; range is 40 to 90 F. The MAT is located on the ®lter rack.

Damper Vent Position Ð The position setting adjustment is located on the cover of the economizer motor. See Fig. 15. Adjust by setting the fan switch at ON position (continuous fan operation), and setting the system selector switch to OFF position. Then turn adjustment screw slowly until the dampers assume the desired vent position. Do not manually operate the damper motor; damage to the motor may result.

Economizer Damper Linkage Adjustment Ð When replacing economizer damper motors, or if the linkage has come loose, it is critical that the linkages be adjusted correctly. They are sensitive, and incorrect adjustment can cause the motor to stall.

NB,NP Unit Minimum Position Set Point Ð Minimum economizer position is set using the keypad and display module. Refer to Control and Troubleshooting literature for more details.

10

UNIT

SIZE

WEIGHT

A

B

C

D

E

F

G

H

J

lb

kg

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

48DJD,DKD,NPD

5641

2559

4498

14-91¤8

48DJE,NPE

034

5770

2617

4474

14-81¤8

3662

12-03¤16

7278

23-109¤16

1709

5-75¤16

2216

7- 31¤4

4228

13-107¤16

2746

9-01¤8

Ð

Ð

3626

12-10 9¤16

50DW,DY,NB

5970

2708

4044

13-31¤4

48DJD,DKD,NPD

6541

2967

5255

17-27¤8

48DJE,NPE

044

6670

2708

5229

17-17¤8

4497

14-91¤16

8496

27-101¤2

2328

7-75¤8

2091

6-105¤16

4706

15-5

3363

11-03¤8

3769

12-43¤8

4762

15-71¤2

50DW,DY,NB

6620

3003

4823

15-97¤8

UNIT	SIZE		K			L
		mm		ft-in.	mm	ft-in.
48DJD,DKD,NPD
48DJE,NPE	034	4741		15-6	6797	22-35¤8
50DW,DY,NB
48DJD,DKD,NPD
48DJE,NPE	044	5576		8-31¤2	8015	26-39¤16
50DW,DY,NB

LEGEND

CONN Ð Connection

DIM Ð Dimension NOTES:

1. Dimensions in [ ] are in millimeters.

2.Center of Gravity includes economizer. Unit weight does not include economizer.

3.Unit clearances:

Top Ð Do not restrict condenser fans Control Box End Ð 6 8-09

Sides Ð 6 8-09

Economizer End Ð 6 8-09 (except power exhaust units 108-09)

For smaller service and operational clearances, contact Carrier Product Engineering Department.

4.Vertical discharge ducts designed to be attached to accessory roof curb. If unit is mounted on dunnage, support the ducts using cross braces as done on the accessory roof curb.

5.When unit is slab mounted, locate the condensate drain as low as possible on vertical face of base rail at the same location as the standard condensate drain (using factory supplied ®tting). Plug factory drilled condensate hole.

Fig. 4A Ð Base Unit Dimensional Drawing; 48DJ,DK,NP/50DW,DY,NB034,044 Units

11

UNIT

SIZE

WEIGHT

A

B

C

D

E

F

G

H

lb

kg

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

mm

ft-in.

50DJ,DK,NP

034

5400

2449

4198

13-91¤4

2916

9-613¤16

6802

22-313¤16

1711

5-73¤8

2216

7- 31¤4

4428

9-01¤8

3762

12-43¤8

Ð

Ð

044

6050

2744

4948

16-213¤16

3746

12-31¤2

8015

26-39¤16

2247

7-47¤16

2091

6-105¤16

3363

11-03¤8

4306

14-11¤2

3769

12-43¤8

	UNIT	SIZE		J		K
			mm	ft-in.	mm	ft-in.
	50DJ,DK,NP	034	4168	13-81¤16	6321	20-87¤8
		044	4999	16-413¤16	7534	24-85¤8

LEGEND

CONN Ð Connection

DIM Ð Dimension NOTES:

1. Dimensions in [ ] are in millimeters.

2.Center of Gravity includes economizer. Unit weight does not include economizer.

3.Unit clearances:

Top Ð Do not restrict condenser fans Control Box End Ð 6 8-09

Sides Ð 6 8-09

Economizer End Ð 6 8-09 (except power exhaust units 108-09)

For smaller service and operational clearances, contact Carrier Product Engineering Department.

4.Vertical discharge ducts designed to be attached to accessory roof curb. If unit is mounted on dunnage, support the ducts using cross braces as done on the accessory roof curb.

5.When unit is slab mounted, locate the condensate drain as low as possible on vertical face of base rail at the same location as the standard condensate drain (using factory supplied ®tting). Plug factory drilled condensate hole.

Fig. 4B Ð Base Unit Dimensional Drawing; 50DJ,DK,NP034,044 Units

12

UNIT	SIZE	WEIGHT			A		B		C		D		E		F			G
		lb	kg	mm	ft-in.	mm	ft-in.	mm	ft-in.	mm	ft-in.	mm	ft-in.	mm		ft-in.	mm		ft-in.
48DJD,DKD,NPD		8700	3946	5969	19-7	6717	22-07¤16					2718	8-11	6541		21-51¤2
48DJE,NPE	054	8820	4000					1163	3-913¤16	11,524	37-911¤16						11,140		36-69¤16
50DW,DY,NB		8250	3742	6045	19-10	7676	25-23¤16					2830	9-33¤4	6427		21-1
48DJD,DKD,NPD		9000	4082	5969	19-7	6717	22-07¤16					2718	8-11	6541		21-51¤2
48DJE,NPE	064	9120	4137					1163	3-913¤16	11,524	37-911¤16						11,140		36-69¤16
50DW,DY,NB		8550	3878	6045	19-10	7676	25-23¤16					2830	9-33¤4	6427		21-1
48DJD,DKD,NPD		9420	4273	6401	21-0	6717	22-07¤16					3543	11-71¤2	5715		18-9
48DJE,NPE	074	9550	4332					1163	3-913¤16	12,433	40-91¤2						12,049		39-63¤8
50DW,DY,NB		8970	4069	6477	21-3	7676	25-23¤16					3694	12-13¤4	5563		18-3

LEGEND

CONN Ð Connection

DIM Ð Dimension

*Dimension shown is for 48 series units. On 50 series units, dimension given is measured from economizer end of unit to drain connection closest to condenser fans.

NOTES:

1. Dimensions in [ ] are in millimeters.

2. Center of Gravity includes economizer. Unit weight does not include economizer.

3.Unit clearances:

Top Ð Do not restrict condenser fans Control Box End Ð 6 8-09

Sides Ð 6 8-09 (except power exhaust units 108-09)

Economizer End Ð 6 8-09 (except power exhaust units 108-09)

For smaller service and operational clearances, contact Carrier Product Engineering Department.

4.Vertical discharge ducts designed to be attached to accessory roof curb. If unit is mounted on dunnage, support the ducts using cross braces as done on the accessory roof curb.

5.When unit is slab mounted, locate the condensate drain as low as possible on vertical face of base rail at the same location as the standard condensate drain (using factory supplied ®tting). Plug factory drilled condensate hole.

Fig. 4C Ð Base Unit Dimensional Drawing; 48DJ,DK,NP/50DW,DY,NB054-074 Units

13

UNIT	SIZE	Weight			A			B	C				D		E				F
		Lb	Kg	mm		ft-in.	mm	ft-in.	mm		ft-in.	mm		ft-in.	mm		ft-in.	mm	ft-in.
	054	7700	3493	5537		18-2	1163	3-913¤16	10,476		34-47¤16	2864		9-43¤4	10,092		33-15¤16	5347	17-61¤2
50DJ,DK,NP	064	8000	3629
	074	8430	3824	5969		21-3	1163	3-913¤16	11,385		37-41¤4	3727		12-23¤4	11,001		36-11¤8	4483	14-81¤2

LEGEND

CONN Ð Connection

DIM Ð Dimension

*Dimension shown is for 48 series units. On 50 series units, dimension given is measured from economizer end of unit to drain connection closest to condenser fans.

NOTES:

1. Dimensions in [ ] are in millimeters.

2.Center of Gravity includes economizer. Unit weight does not include economizer.

3.Unit clearances:

Top Ð Do not restrict condenser fans Control Box End Ð 6 8-09

Sides Ð 6 8-09 (except power exhaust units 108-09)

Economizer End Ð 6 8-09 (except power exhaust units 108-09)

For smaller service and operational clearances, contact Carrier Product Engineering Department.

4.Vertical discharge ducts designed to be attached to accessory roof curb. If unit is mounted on dunnage, support the ducts using cross braces as done on the accessory roof curb.

5.When unit is slab mounted, locate the condensate drain as low as possible on vertical face of base rail at the same location as the standard condensate drain (using factory supplied ®tting). Plug factory drilled condensate hole.

Fig. 4D Ð Base Unit Dimensional Drawing; 50DJ,DK,NP054-074 Units

14

034 UNITS

ROOF MOUNT DRAIN

044-074 UNITS

Fig. 5 Ð Drain Location Selection

SLAB MOUNT DRAIN

Fig. 8 Ð Condensate Drain Piping Details

Fig. 6 Ð Condensate Drain Location

Fig. 9 Ð Outdoor-Air Hood

Fig. 7 Ð Seal Plate Location

15

Fig. 12 Ð Enthalpy Sensor Location

Fig. 10 Ð Outdoor-Air Damper Adjustments

(Inside of Hood Shown)

ENTHALPY	O
SENSOR

Fig. 11 Ð Enthalpy Sensor

	CONTROL
CONTROL	POINT
CURVE	(Approx Deg)
	AT 50% RH
A	73
B	68
C	63
D	58

Fig. 13 Ð Psychrometric Chart for Enthalpy Control

16

NOTES:

1.Switches shown in high enthalpy state. Terminals 2 and 3 close on enthalpy decrease.

2.When standard economizer is used with accessory differential enthalpy sensor, set enthalpy control to ``D'' setting.

Fig. 14 Ð Wiring Connections for Solid-State Enthalpy Sensor (HH57AC077)

Fig. 15 Ð Mixed-Air Thermistor and Economizer

Position Setting Adjustments

(Top of Economizer Motor)

Field Wire Routing

UNIT SIZES 034 AND 044 Ð Field wiring can be brought into the unit through the basepan and roof curb or through the corner post in the side of the unit next to the control box.

A 3-1/2 in. NPT coupling for ®eld power and a 3/4-in. NPT coupling for 24 v control wiring are provided in the basepan. There are two 4-5/8 in. knockouts in the corner post for ®eld power wiring.

If ®eld power wiring is brought through the roof curb, route wiring out through one of the 4-5/8 in. knockouts to the ®eldsupplied disconnect and then back into the unit through the other knockout. See Fig. 16 for recommended disconnect location.

If power wiring is brought through the side of the unit, route wiring from ®eld-supplied disconnect through top 4-5/8 in. knockouts into unit.

If control wiring is to be brought in through the side of the unit, a 7/8-in. diameter hole must be drilled in the corner post next to the control box.

UNIT SIZES 054-074 Ð Field wiring is brought into the unit through the bottom of the control box. Wiring can be brought through the roof curb through ®eld-supplied watertight connections. See Fig. 17.

A 4-5/32 in. hole for ®eld power wiring and a 7/8-in. hole for 24 v control wiring are provided in the bottom of the control box. Field-supplied couplings must be used when routing wiring into the control box.

See Fig. 17 for recommended disconnect location.

Field Electrical Connections

IMPORTANT: The 48/50DK,DY,NB,NP units generate, use, and can radiate radio frequency energy. If units are not installed and used in accordance with these instructions, they may cause radio interference. They have been tested and found to comply with limits of a Class A computing device as de®ned by FCC (Federal Communications Commission) regulations, Subpart J of Part 15, which are designed to provide reasonable protection against such interference when operated in a commercial environment.

Use care when drilling into corner post to avoid damage to condenser coil.

Fig. 16 Ð Disconnect Location, 034 and 044 Units (50 Series Vertical Discharge Unit Shown)

17

Use care when drilling into corner post to avoid damage to condenser coil.

Fig. 17 Ð Disconnect Location, 054-074 Units (50 Series Horizontal Discharge Shown)

POWER WIRING Ð Units are factory wired for the voltage shown on the unit nameplate. The main terminal block is suitable for use with aluminum or copper wires. Maximum wire size is 3/0 AWG (American Wire Gage).

Use the following formula to determine the percent voltage imbalance.

% Voltage Imbalance

= 100 x	max voltage deviation from average voltage

When installing units, provide a disconnect per NEC (National Electrical Code) of adequate size (MOCP [Maximum Overcurrent Protection] of unit is on the informative plate). All ®eld wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 18 for power wiring connections to the unit power terminal block and equipment ground.

Operating voltage to the compressor must be within the voltage range indicated on the unit nameplate. Voltages between phases must be balanced within 2%, and the current must be balanced within 10%. See Tables 3-7 for unit electrical data.

	LEGEND
EQUIP	Ð Equipment
GND	Ð Ground
NEC	Ð National Electrical Code
TB	Ð Terminal Block

Fig. 18 Ð Field Power Wiring Connections

average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

	Average Voltage =	452 1 464 1 455
			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 voltage imbalance:

	% Voltage Imbalance = 100 x	7
		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 local utility immediately.

Unit failure as a result of operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components.

18

Table 3 Ð Electrical Data, 034 Units

208/230-3-60 (V-Ph-Hz)

BASE UNIT WITH

COMPR

COMPR

OFM

IFM

BASE UNIT

EXHAUST

ELECTRIC

EXHAUST FAN

VOLTAGE

NO. 1

NO. 2

ONLY

FAN

HEAT*

AND/OR

RANGE

ELECTRIC HEAT*

RLA

LRA

RLA

LRA

Total

Hp

FLA

MCA

MOCP

Total

Total

kW

FLA

MCA

MOCP

FLA

Hp

FLA

6.0

21.2/20.0

Ð

Ð

175.9/172.5

225/225

10.0

33.4/30.0

Ð

Ð

188.1/182.5

225/225

15.0

48.4/44.0

Ð

Ð

203.1/196.5

250/225

Ð

Ð

29/

36

78.9/ 91.0

154.7/152.5

200/200

Ð

Ð

59/

72

157.7/182.0

227.4/255.0

250/300

Ð

Ð

88/108²

236.6/273.0

326.0/368.8

350/400

7.5

24.2/

154.7/

200/

6.0

21.2/20.0

29/

36

78.9/

91.0

175.9/172.5

225/225

6.0

21.2/20.0

59/

72

157.7/182.0

227.4/255.0

250/300

22.0

152.5

200

6.0

21.2/20.0

88/108²

236.6/ 273.0

326.0/368.8

350/400

10.0

33.4/30.0

29/

36

78.9/

91.0

188.1/182.5

225/225

10.0

33.4/30.0

59/

72

157.7/182.0

227.4/255.0

250/300

10.0

33.4/30.0

88/108²

236.6/273.0

326.0/368.8

350/400

15.0

48.4/44.0

29/

36

78.9/

91.0

203.1/196.5

250/225

15.0

48.4/44.0

59/

72

157.7/182.0

227.4/255.0

250/300

15.0

48.4/44.0

88/108²

236.6/273.0

326.0/368.8

350/400

6.0

21.2/20.0

Ð

Ð

182.5/178.5

225/225

10.0

33.4/30.0

Ð

Ð

194.7/188.5

225/225

15.0

48.4/44.0

Ð

Ð

209.7/202.5

250/250

Ð

Ð

29/

36

78.9/ 91.0

161.3/158.5

200/200

Ð

Ð

59/

72

157.7/182.0

235.6/262.5

250/300

Ð

Ð

88/108²

236.6/273.0

334.2/376.3

350/400

10.0

30.8/

161.3/

200/

6.0

21.2/20.0

29/

36

78.9/

91.0

182.5/178.5

225/225

6.0

21.2/20.0

59/

72

157.7/182.0

235.6/262.5

250/300

28.0

158.5

200

6.0

21.2/20.0

88/108²

236.6/273.0

334.2/376.3

350/400

10.0

33.4/30.0

29/

36

78.9/

91.0

194.7/188.5

225/225

10.0

33.4/30.0

59/

72

157.7/182.0

235.6/262.5

250/300

10.0

33.4/30.0

88/108

236.6/273.0

334.2/376.3

350/400

15.0

48.4/44.0

29/

36

78.9/

91.0

209.7/202.5

250/250

15.0

48.4/44.0

59/

72

157.7/182.0

235.6/262.5

250/300

187-254

53.2

266.0

53.2

266.0

10.8

15.0

48.4/44.0

88/108²

236.6/273.0

334.2/376.3

350/400

6.0

21.2/20.0

Ð

Ð

197.9/192.5

250/225

10.0

33.4/30.0

Ð

Ð

210.1/202.5

250/250

15.0

48.4/44.0

Ð

Ð

225.1/216.5

250/250

Ð

Ð

29/

36

78.9/ 91.0

176.7/172.5

250/250

Ð

Ð

59/

72

157.7/182.0

254.9/280.0

300/350

Ð

Ð

88/108²

236.6/273.0

353.5/393.8

400/400

15.0

46.2/

176.7/

225/

6.0

21.2/20.0

29/

36

78.9/

91.0

197.9/192.5

250/250

6.0

21.2/20.0

59/

72

157.7/182.0

254.9/280.0

300/350

42.0

172.5

225

6.0

21.2/20.0

88/108²

236.6/273.0

353.5/393.8

400/400

10.0

33.4/30.0

29/

36

78.9/

91.0

210.1/202.5

250/250

10.0

33.4/30.0

59/

72

157.7/182.0

254.9/280.0

300/350

10.0

33.4/30.0

88/108

236.6/273.0

353.5/393.8

400/400

15.0

48.4/44.0

29/

36

78.9/

91.0

225.1/216.5

250/250

15.0

48.4/44.0

59/

72

157.7/182.0

254.9/280.0

300/350

15.0

48.4/44.0

88/108²

236.6/273.0

353.5/393.8

400/400

6.0

21.2/20.0

Ð

Ð

212.6/204.7

250/250

10.0

33.4/30.0

Ð

Ð

224.8/214.7

250/250

15.0

48.4/44.0

Ð

Ð

239.9/228.7

250/250

Ð

Ð

29/

36

78.9/ 91.0

191.4/184.7

300/300

Ð

Ð

59/

72

157.7/182.0

271.4/295.0

350/350

Ð

Ð

88/108²

236.6/273.0

370.0/408.8

450/450

20.0

59.4/

191.4/

250/

6.0

21.2/20.0

29/

36

78.9/

91.0

212.6/204.7

300/300

6.0

21.2/20.0

59/

72

157.7/182.0

271.4/295.0

350/350

54.0

184.7

225

6.0

21.2/20.0

88/108²

236.6/273.0

370.0/408.8

450/450

10.0

33.4/30.0

29/

36

78.9/

91.0

224.8/214.7

300/300

10.0

33.4/30.0

59/

72

157.7/182.0

271.4/295.0

350/350

10.0

33.4/30.0

88/108²

236.6/273.0

370.0/408.8

450/450

15.0

48.4/44.0

29/

36

78.9/

91.0

239.9/228.7

300/300

15.0

48.4/44.0

59/

72

157.7/182.0

271.4/295.0

350/350

15.0

48.4/44.0

88/108²

236.6/273.0

370.0/408.8

450/450

		LEGEND
CV	Ð Constant Volume
ETL	Ð	ETL Testing Laboratory
FLA	Ð	Full Load Amps
Hp	Ð	Nominal Horsepower
IFM	Ð Indoor (Evaporator) Fan Motor
LRA	Ð	Locked Rotor Amps
MCA	Ð Minimum Circuit Amps (for wire sizing)
MOCP	Ð Maximum Overcurrent Protection
OFM	Ð Outdoor (Condenser) Fan Motor
RLA	Ð	Rated Load Amps

*Electric heat available on 50 Series vertical discharge units. ²108 kW available on CV applications only.

NOTES:

1.Electric resistance heaters are rated at 208/240 v, 480 v, or 575 v. To determine heater capacity (kW) at unit operating voltage, multiply 240 v, 480 v, or 575 v capacity by appropriate multiplier below.

MULTIPLICATION FACTORS

	HEATER kW	VOLTAGE	MULTIPLICATION
		DISTRIBUTION
	RATING		FACTOR
		V-3-60
		200	0.694
	240	208	0.751
		230	0.918
		240	1.000
	480	440	0.840
		460	0.918
		480	1.000
	575	550	0.915
		575	1.000
		600	1.089

Electric heaters are tested and ETL approved at maximum total external static pressure of 1.9 in. wg.

2.Boldface indicates 48 and 50 Series units. All other data is for 50 Series units only.

19

Table 3 Ð Electrical Data, 034 Units (cont)

460-3-60 (V-Ph-Hz)

																	BASE UNIT WITH
	COMPR		COMPR		OFM		IFM		BASE UNIT			EXHAUST			ELECTRIC		EXHAUST FAN
VOLTAGE	NO. 1		NO. 2							ONLY			FAN		HEAT*		AND/OR
RANGE																	ELECTRIC HEAT*
	RLA	LRA	RLA	LRA	Total	Hp		FLA	MCA		MOCP	Total		Total	kW	FLA	MCA	MOCP
					FLA							Hp		FLA
												6.0		9.6	Ð	Ð	90.8	110
												10.0		15.2	Ð	Ð	96.4	125
												15.0		22.0	Ð	Ð	103.2	125
												Ð		Ð	36	46.3	81.2	100
												Ð		Ð	72	93.0	130.0	150
												Ð		Ð	108²	139.0	187.5	200
						7.5		11.0	81.2		100	6.0		9.6	36	46.3	90.8	110
												6.0		9.6	72	93.0	130.0	150
												6.0		9.6	108²	139.0	187.5	200
												10.0		15.2	36	46.3	96.4	125
												10.0		15.2	72	93.0	130.0	150
												10.0		15.2	108²	139.0	187.5	200
												15.0		22.0	36	46.3	103.2	125
												15.0		22.0	72	93.0	130.0	150
												15.0		22.0	108²	139.0	187.5	200
												6.0		9.6	Ð	Ð	93.8	110
												10.0		15.2	Ð	Ð	99.4	125
												15.0		22.0	Ð	Ð	106.2	125
												Ð		Ð	36	46.3	84.2	110
												Ð		Ð	72	93.0	133.7	150
												Ð		Ð	108²	139.0	191.2	200
						10.0		14.0	84.2		110	6.0		9.6	36	46.3	93.8	110
												6.0		9.6	72	93.0	133.7	150
												6.0		9.6	108²	139.0	191.2	200
												10.0		15.2	36	46.3	99.4	125
												10.0		15.2	72	93.0	133.7	150
												10.0		15.2	108²	139.0	191.2	200
												15.0		22.0	36	46.3	106.2	125
												15.0		22.0	72	93.0	133.7	150
414-508	28.8	120.0	28.8	120.0	5.4							15.0		22.0	108²	139.0	191.2	200
												6.0		9.6	Ð	Ð	100.8	125
												10.0		15.2	Ð	Ð	106.4	125
												15.0		22.0	Ð	Ð	113.2	125
												Ð		Ð	36	46.3	91.2	125
												Ð		Ð	72	93.0	142.5	175
												Ð		Ð	108²	139.0	200.0	200
						15.0		21.0	91.2		110	6.0		9.6	36	46.3	100.8	125
												6.0		9.6	72	93.0	142.5	175
												6.0		9.6	108²	139.0	200.0	200
												10.0		15.2	36	46.3	106.4	125
												10.0		15.2	72	93.0	142.5	175
												10.0		15.2	108²	139.0	200.0	200
												15.0		22.0	36	46.3	113.2	125
												15.0		22.0	72	93.0	142.5	175
												15.0		22.0	108²	139.0	200.0	200
												6.0		9.6	Ð	Ð	106.8	125
												10.0		15.2	Ð	Ð	112.4	125
												15.0		22.0	Ð	Ð	119.2	125
												Ð		Ð	36	46.3	97.2	150
												Ð		Ð	72	93.0	150.0	200
												Ð		Ð	108²	139.0	207.5	225
						20.0		27.0	97.2		125	6.0		9.6	36	46.3	106.8	150
												6.0		9.6	72	93.0	150.0	200
												6.0		9.6	108²	139.0	207.5	225
												10.0		15.2	36	46.3	112.4	150
												10.0		15.2	72	93.0	150.0	200
												10.0		15.2	108²	139.0	207.5	225
												15.0		22.0	36	46.3	119.2	150
												15.0		22.0	72	93.0	150.0	200
												15.0		22.0	108²	139.0	207.5	225

20

Table 3 Ð Electrical Data, 034 Units (cont)

575-3-60 (V-Ph-Hz)

																	BASE UNIT WITH
	COMPR		COMPR		OFM		IFM		BASE UNIT			EXHAUST			ELECTRIC		EXHAUST FAN
VOLTAGE	NO. 1		NO. 2							ONLY			FAN		HEAT*		AND/OR
RANGE																	ELECTRIC HEAT*
	RLA	LRA	RLA	LRA	Total	Hp		FLA	MCA		MOCP	Total		Total	kW	FLA	MCA	MOCP
					FLA							Hp		FLA
												6.0		7.8	Ð	Ð	73.6	90
												10.0		12.2	Ð	Ð	78.0	100
												15.0		18.0	Ð	Ð	83.8	100
												Ð		Ð	36	36.0	65.8	80
												Ð		Ð	72	72.0	101.3	110
												Ð		Ð	108²	108.0	146.2	150
						7.5		9.0	65.8		80	6.0		7.8	36	36.0	73.6	90
												6.0		7.8	72	72.0	101.3	110
												6.0		7.8	108²	108.0	146.2	150
												10.0		12.2	36	36.0	78.0	100
												10.0		12.2	72	72.0	101.3	110
												10.0		12.2	108²	108.0	146.2	150
												15.0		18.0	36	36.0	83.8	100
												15.0		18.0	72	72.0	101.3	110
												15.0		18.0	108²	108.0	146.2	150
												6.0		7.8	Ð	Ð	75.6	90
												10.0		12.2	Ð	Ð	80.0	100
												15.0		18.0	Ð	Ð	85.8	100
												Ð		Ð	36	36.0	67.8	90
												Ð		Ð	72	72.0	103.7	110
												Ð		Ð	108²	108.0	148.7	150
						10.0		11.0	67.8		90	6.0		7.8	36	36.0	75.6	90
												6.0		7.8	72	72.0	103.7	110
												6.0		7.8	108²	108.0	148.7	150
												10.0		12.2	36	36.0	80.0	100
												10.0		12.2	72	72.0	103.7	110
												10.0		12.2	108²	108.0	148.7	150
												15.0		18.0	36	36.0	85.8	100
												15.0		18.0	72	72.0	103.7	110
518-632	23.1	96.0	23.1	96.0	4.8							15.0		18.0	108²	108.0	148.7	150
												6.0		7.8	Ð	Ð	81.6	100
												10.0		12.2	Ð	Ð	86.0	100
												15.0		18.0	Ð	Ð	91.8	110
												Ð		Ð	36	36.0	73.8	100
												Ð		Ð	72	72.0	111.2	125
												Ð		Ð	108²	108.0	156.2	175
						15.0		17.0	73.8		90	6.0		7.8	36	36.0	81.6	100
												6.0		7.8	72	72.0	111.2	125
												6.0		7.8	108²	108.0	156.2	175
												10.0		12.2	36	36.0	86.0	100
												10.0		12.2	72	72.0	111.2	125
												10.0		12.2	108²	108.0	156.2	175
												15.0		18.0	36	36.0	91.8	110
												15.0		18.0	72	72.0	111.2	125
												15.0		18.0	108²	108.0	156.2	175
												6.0		7.8	Ð	Ð	86.6	100
												10.0		12.2	Ð	Ð	91.0	110
												15.0		18.0	Ð	Ð	96.8	110
												Ð		Ð	36	36.0	78.8	110
												Ð		Ð	72	72.0	117.5	150
												Ð		Ð	108²	108.0	162.5	175
						20.0		22.0	78.8		100	6.0		7.8	36	36.0	86.6	110
												6.0		7.8	72	72.0	117.5	150
												6.0		7.8	108²	108.0	162.5	175
												10.0		12.2	36	36.0	91.0	110
												10.0		12.2	72	72.0	117.5	150
												10.0		12.2	108²	108.0	162.5	175
												15.0		18.0	36	36.0	96.8	110
												15.0		18.0	72	72.0	117.5	150
												15.0		18.0	108²	108.0	162.5	175

		LEGEND
CV	Ð Constant Volume
ETL	Ð	ETL Testing Laboratory
FLA	Ð	Full Load Amps
Hp	Ð	Nominal Horsepower
IFM	Ð Indoor (Evaporator) Fan Motor
LRA	Ð	Locked Rotor Amps
MCA	Ð Minimum Circuit Amps (for wire sizing)
MOCP	Ð Maximum Overcurrent Protection
OFM	Ð Outdoor (Condenser) Fan Motor
RLA	Ð	Rated Load Amps

*Electric heat available on 50 Series vertical discharge units. ²108 kW available on CV applications only.

NOTES:

1.Electric resistance heaters are rated at 208/240 v, 480 v, or 575 v. To determine heater capacity (kW) at unit operating voltage, multiply 240 v, 480 v, or 575 v capacity by appropriate multiplier below.

MULTIPLICATION FACTORS

	HEATER kW	VOLTAGE	MULTIPLICATION
		DISTRIBUTION
	RATING		FACTOR
		V-3-60
		200	0.694
	240	208	0.751
		230	0.918
		240	1.000
	480	440	0.840
		460	0.918
		480	1.000
	575	550	0.915
		575	1.000
		600	1.089

Electric heaters are tested and ETL approved at maximum total external static pressure of 1.9 in. wg.

2.Boldface indicates 48 and 50 Series units. All other data is for 50 Series units only.

21

Table 4 Ð Electrical Data, 044 Units

208/230-3-60 (V-Ph-Hz)

BASE UNIT WITH

COMPR

COMPR

OFM

IFM

BASE UNIT

EXHAUST

ELECTRIC

EXHAUST FAN

VOLTAGE

NO. 1

NO. 2

ONLY

FAN

HEAT*

AND/OR

RANGE

ELECTRIC HEAT*

RLA

LRA

RLA

LRA

Total

Hp

FLA

MCA

MOCP

Total

Total

kW

FLA

MCA

MOCP

FLA

Hp

FLA

6.0

21.2/20.0

Ð

Ð

217.3/213.9

250/250

10.0

33.4/30.0

Ð

Ð

229.5/223.9

250/250

15.0

48.4/44.0

Ð

Ð

244.5/237.9

300/300

Ð

Ð

29/

35

78.9/ 91.0

196.1/193.9

250/250

Ð

Ð

59/

72

157.7/182.0

227.4/255.0

250/300

Ð

Ð

88/108²

236.6/273.0

326.0/368.8

350/400

7.5

24.2/

196.1/

250/

6.0

21.2/20.0

29/

36

78.9/

91.0

217.3/213.9

250/250

6.0

21.2/20.0

59/

72

157.7/182.0

227.4/255.0

250/300

22.0

193.9

250

6.0

21.2/20.0

88/108²

236.6/273.0

326.0/368.8

350/400

10.0

33.4/30.0

29/

36

78.9/

91.0

229.5/223.9

250/250

10.0

33.4/30.0

59/

72

157.7/182.0

229.5/255.0

250/300

10.0

33.4/30.0

88/108²

236.6/273.0

326.0/368.8

350/400

15.0

48.4/44.0

29/

36

78.9/

91.0

244.5/237.9

300/300

15.0

48.4/44.0

59/

72

157.7/182.0

244.5/255.0

300/300

15.0

48.4/44.0

88/108²

236.6/273.0

326.0/368.8

350/400

6.0

21.2/20.0

Ð

Ð

223.9/219.9

250/250

10.0

33.4/30.0

Ð

Ð

236.1/229.9

300/250

15.0

48.4/44.0

Ð

Ð

251.1/243.9

300/300

Ð

Ð

29/

36

78.9/ 91.0

202.7/199.9

250/250

Ð

Ð

59/

72

157.7/182.0

235.6/262.5

250/300

Ð

Ð

88/108²

236.6/273.0

334.2/376.3

350/400

10.0

30.8/

202.7/

250/

6.0

21.2/20.0

29/

36

78.9/

91.0

223.9/219.9

250/250

6.0

21.2/20.0

59/

72

157.7/182.0

235.6/262.5

250/300

28.0

199.9

250

6.0

21.2/20.0

88/108²

236.6/273.0

334.2/376.3

350/400

10.0

33.4/30.0

29/

36

78.9/

91.0

236.1/229.9

300/250

10.0

33.4/30.0

59/

72

157.7/182.0

236.1/262.5

300/300

10.0

33.4/30.0

88/108²

236.6/273.0

334.2/376.3

350/400

15.0

48.4/44.0

29/

36

78.9/

91.0

251.1/243.9

300/300

15.0

48.4/44.0

59/

72

157.7/182.0

251.1/262.5

300/300

187-254

69.2

345.0

69.2

345.0

16.2

15.0

48.4/44.0

88/108²

236.6/273.0

334.2/376.3

350/400

6.0

21.2/20.0

Ð

Ð

239.3/233.9

300/300

10.0

33.4/30.0

Ð

Ð

251.5/243.9

300/300

15.0

48.4/44.0

Ð

Ð

266.5/257.9

300/300

Ð

Ð

29/

36

78.9/ 91.0

218.1/213.9

250/250

Ð

Ð

59/

72

157.7/182.0

254.9/280.0

300/350

Ð

Ð

88/108²

236.6/273.0

353.5/393.8

400/400

15.0

46.2/

218.1/

250/

6.0

21.2/20.0

29/

36

78.9/

91.0

239.3/233.9

300/300

6.0

21.2/20.0

59/

72

157.7/182.0

254.9/280.0

300/350

42.0

213.9

250

6.0

21.2/20.0

88/108²

236.6/273.0

353.5/393.8

400/400

10.0

33.4/30.0

29/

36

78.9/

91.0

251.5/243.9

300/300

10.0

33.4/30.0

59/

72

157.7/182.0

254.9/280.0

300/350

10.0

33.4/30.0

88/108²

236.6/273.0

353.5/393.8

400/400

15.0

48.4/44.0

29/

36

78.9/

91.0

266.5/257.9

300/300

15.0

48.4/44.0

59/

72

157.7/182.0

266.5/280.0

300/350

15.0

48.4/44.0

88/108²

236.6/273.0

353.5/393.8

400/400

6.0

21.2/20.0

Ð

Ð

252.5/245.9

300/300

10.0

33.4/30.0

Ð

Ð

264.7/255.9

300/300

15.0

48.4/44.0

Ð

Ð

279.7/269.9

300/300

Ð

Ð

29/

36

78.9/ 91.0

231.3/225.9

300/300

Ð

Ð

59/

72

157.7/182.0

271.4/295.0

350/350

Ð

Ð

88/108²

236.6/273.0

370.0/408.8

450/450

20.0

59.4/

231.3/

300/

6.0

21.2/20.0

29/

36

78.9/

91.0

252.5/245.9

300/300

6.0

21.2/20.0

59/

72

157.7/182.0

271.4/295.0

350/350

54.0

225.9

250

6.0

21.2/20.0

88/108²

236.6/273.0

370.0/408.8

450/450

10.0

33.4/30.0

29/

36

78.9/

91.0

264.7/255.9

300/300

10.0

33.4/30.0

59/

72

157.7/182.0

271.4/295.0

350/350

10.0

33.4/30.0

88/108²

236.6/273.0

370.0/408.8

450/450

15.0

48.4/44.0

29/

36

78.9/

91.0

279.7/269.9

300/300

15.0

48.4/44.0

59/

72

157.7/182.0

279.7/295.0

350/350

15.0

48.4/44.0

88/108²

236.6/273.0

370.0/408.8

450/450

22