Carrier 48ZT, 48ZG, Z6, ZN030-105, ZW User Manual 2

WEATHERMASTER® 48ZG,ZN030-105 48ZT,ZW,Z6,Z8075-105

Single Package Gas Heating and Electric Cooling Units with Direct Spark Ignition and COMFORTLINK™ Controls

Installation Instructions

CONTENTS

Page

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .1,2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59

Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Unit Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

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

Curb Gasketing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Field-Fabricated Ductwork . . . . . . . . . . . . . . . . . . . . . . . 2

Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Condensate Drain Connections . . . . . . . . . . . . . . . . . 23

Install Outdoor Hoods

(48ZG,ZN,Z6,Z8 Units). . . . . . . . . . . . . . . . . . . . . . . . . 33

•UNIT SIZES 030-050

•UNIT SIZES 055-105

Install Economizer Hoods (48ZT,ZW Units) . . . . . . 35

•INSTALL SMALL HOODS

•INSTALL LARGE HOODS

Field Wire Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

•UNIT SIZES 030-050

•UNIT SIZES 055-105

Field Electrical Connections . . . . . . . . . . . . . . . . . . . . 36

• POWER WIRING

Air Pressure Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

•INLET GUIDE VANES

•VARIABLE FRQUENCY DRIVE

•MODULATING POWER EXHAUST

•RETURN/EXHAUST POWER EXHAUST

Supply-Fan Shipping Brackets . . . . . . . . . . . . . . . . . . 53

•UNIT SIZES 030-050

•UNIT SIZES 055-070

•UNIT SIZES 075-105

Return/Exhaust Fan Shipping Brackets

(48Z6,Z8 Units). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Remove TXV Shipping Blocks. . . . . . . . . . . . . . . . . . . 54

Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Optional Staged Gas Control . . . . . . . . . . . . . . . . . . . . 55

Installing Flue/Inlet Hoods . . . . . . . . . . . . . . . . . . . . . . 56

Supply Air Thermistors

(Staged Gas Units Only) . . . . . . . . . . . . . . . . . . . . . . 56

Install Unit Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 59

CONTROLS INSTALLATION . . . . . . . . . . . . . . . . . . 59-66

Constant Volume Units. . . . . . . . . . . . . . . . . . . . . . . . . . 59

• CONTROL WIRING

Variable Air Volume Units . . . . . . . . . . . . . . . . . . . . . . . 59

Optional and Accessory Control Wiring . . . . . . . . . 60

Carrier Comfort Network® (CCN) Interface. . . . . . . 60

Smoke Control Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . 61

GENERAL

This installation instruction contains basic unit installation information, including installation of thermostats and remote temperature sensors.

For additional information and service instructions, refer to the Controls and Troubleshooting literature also enclosed in this literature packet.

The 48ZT,ZW units are equipped with standard integral economizer and high-capacity power exhaust.

The 48Z6,Z8 units are equipped with factory-installed return/exhaust fans.

The staged gas control (SGC) option adds the capability to control the rooftop unit’s gas heating system to a specified supply air temperature set point for purposes of tempering a cool mixed-air condition.

SAFETY CONSIDERATIONS

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

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. 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 fire extinguisher available for all brazing operations.

WARNING

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

FOR YOUR SAFETY

WHAT TO DO IF YOU SMELL GAS

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 fire department.

FOR YOUR SAFETY

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

WARNING

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

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

Catalog No. 04-53480060-01

Printed in U.S.A.

Form 48Z-8SI

Pg 1

4-09

Replaces: 48Z-7SI

CAUTION

Disconnect gas piping from 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 fieldsupplied 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

Jobsite Survey — Complete the following checks before installation.

1.Consult local building codes and the NEC (National Electrical Code) (ANSI/NFPA [National Fire Protection Association] 70) for special installation requirements.

2.Determine unit location (from project plans) or select unit location.

3.Check for possible overhead obstructions which may interfere with unit lifting or rigging.

CAUTION

Do not lift unit with forklift truck. Move unit with overhead rigging only.

Unit Placement — Inspect unit for transportation damage. File claim with transportation agency.

Provide clearance around and above unit for airflow, 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.

Check unit dimensional drawings for unit arrangement and minimum performance and service clearances.

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

Level by using unit frame as a reference. Physical data is shown in Tables 1A-6.

Roof Mount — Check building codes for weight distribution requirements. Unit weight is shown in Tables 1A-1E and 2. Unit may be mounted on class A, B, or C roofing material.

ROOF CURB — Assemble and install roof curb as described in instructions shipped with the accessory. Accessory roof curb and information required to field fabricate a roof curb is shown in Fig. 1-5. Install insulation, cant strips, roofing and counter flashing as required. For unit condensate drain to function properly, curb must be level or within tolerances shown in Fig. 1-5.

STEEL BEAMS — 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.

Slab Mount — 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 airflow. Ensure that slab is of sufficient height to allow for condensate trap of 4 in. on sizes 030-070 or 7 in. on sizes 075-105.

Curb Gasketing

SIZE 030-050 UNITS — After ductwork has been connected to the roof curb, attach adhesive-backed gasketing on all end rails, cross rails, and duct rails. Be sure all joints and corners of gasket are square and flush to prevent possible water leaks. Follow all applicable building codes.

SIZE 055-105 UNITS — After ductwork has been connected to the roof curb, apply gasket material (1/2-in. thick x 11/2-in. wide neoprene) where indicated.

Single-Thickness Gasketing (See Fig. 6-8 for Item Numbers) — Apply gasketing in the following places:

1.Along both side rails (1) — 2 places, full length

2.Along return air end rail (2) — 1 place

3.Around return air internal duct flange (3) — 1 or 2 places

4.Around supply air internal duct flanges (4) — 3 places

Double-Thickness Gasketing (See Fig. 6 and 8 and Detail A-A) — Locate a line 93/4-in. from the supply air end of the accessory curb. Apply a double-thickness of gasket material along with line per detail A-A.

NOTE: Do not apply gasket material along the outside edge of the curb (area “X”). This pan area of the curb extends out beneath the end of the unit’s air handler section; applying gasket here develops a potential water trap area on top of the curb.

Condenser Section Roof Curb (See Fig. 7) — Apply singlethickness gasket along both side rails (5).

Field-Fabricated Ductwork

WARNING

For vertical supply and return units, tools or parts could drop into ductwork and cause an injury. Install a 90-degree turn in the supply and return ductwork between the unit and the conditioned space. If a 90-degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space. Failure to follow these instructions could result in personal injury or property damage due to falling objects.

The 48ZG,ZN,ZT,ZW,Z6,Z8 units are designed for vertical supply/return only. Field-fabricated ductwork must be attached to the roof curb, on to the support steel, prior to the final rigging and installation of the unit. Supply and return duct dimensions are shown in Fig. 1-3.

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 the duct.

Secure all ducts to the building structure, using flexible duct connectors between roof curbs 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 the unit is equipped with power exhaust.

Design supply duct strong enough to handle expected static pressures.

Rigging — 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. 9-13 for information. Unit and accessory weights are shown in Tables 1A1E and 2. Weight distribution and center of gravity can be found in Fig. 14.

2

Table 1A — Physical Data (48ZG,ZN030-050)

BASE UNIT				48ZG,ZN030									48ZG,ZN035
NOMINAL CAPACITY (tons)				30									35
OPERATING WEIGHT (lb)				Standard Chassis			Extended Chassis				Standard Chassis				Extended Chassis
Base Unit
	Low Heat			5640			6140				5766				6266
	High Heat			5770			6270				5895				6395
With Economizer
	Low Heat			5941			6441				6066				6566
	High Heat			6070			6570				6195				6695
COMPRESSORS									Semi-Hermetic
Quantity...Type				2...06D									1...06D, 1...06E
Oil Charge (pints)				8									8, 14
Capacity Steps (%)
	CV			50,100									43,100
	VAV			17,33,50,67,83,100									14,28,42,57,71,86,100
Number of Refrigerant Circuits				2									2
REFRIGERANT									R-22
Operating Charge (lb), Ckt 1/Ckt 2
	Standard Evaporator Coil			29.0/29.0									29.0/30.5
	Standard Evaporator with HGBP			31.0/29.0									31.0/30.5
	Alternate High-Capacity Evaporator Coil			N/A									N/A
	Alternate High-Capacity Evaporator with HGBP			N/A									N/A
CONDENSER COILS							3/8-in. Tube Diameter
Quantity				2									2
Rows...Fins/in.
	Aluminum			3...15.0									3...15.0
	Copper (Optional)			3...13.7									3...13.7
Total Face Area (sq ft)				37.5									37.5
EVAPORATOR COILS
Quantity									1
Total Face Area (sq ft)									32.1
Refrigerant Feed Device...No. per Circuit									TXV...1
Standard Evaporator Coils				1/2 in. Tube Dia									1/2 in. Tube Dia
	Rows...Fins/in.			3...15.0									4...15.0
	Fin Type			Double Wavy									Double Wavy
	Tube Type			Cross Hatched									Cross Hatched
Alternate, High-Capacity Evaporator Coils				N/A									N/A
	Rows...Fins/in.			N/A									N/A
	Fin Type			N/A									N/A
	Tube Type			N/A									N/A
HEATING SECTION				Low Heat			High Heat				Low Heat				High Heat
Number of Heat Exchangers				1			2				1				2
Input (MBtuh)				325			650				325				650
Output (MBtuh)				263			527				263				527
Temperature Rise Range (F)				10-40			25-55				10-40				25-55
Efficiency (%)				81			81				81				81
Burner Orifice Diameter
	Quantity (in. ...drill no.)			7 (.1285...30)			14 (.1285...30)				7 (.1258...30)				14 (.1258...30)
Manifold Pressure (in. wg)				3.3			3.3				3.3				3.3
Line Pressure (in. wg) (min...max)				5.0...13.0			5.0...13.0				5.0...13.0				5.0...13.0
Firing Stages				2			2				2				2
Number of Gas Valves				1			2				1				2
CONDENSER FANS									Propeller Type
Quantity...Diameter (in.)				2...30									2...30
Nominal Cfm				18,600									18,600
Motor Hp...Rpm				1.0...1140									1.0...1140
SUPPLY FAN							Centrifugal 25 x 25 in.
Nominal Cfm				10,500									10,500
Maximum Allowable Cfm				15,000									15,000
Maximum Allowable Rpm				900									900
Shaft Diameter at Pulley (in.)				111/16									111/16
SUPPLY-FAN MOTOR AND DRIVE							(Any motor available on any unit)
Motor Hp				7.5			10		15				20		25
Motor Frame Size				213T			215T				254T		256T		284T
Efficiency at Full Load (%)
	High Efficiency			88.5			89.5		91.0				91.0		91.7
	Premium Efficiency			91.7			91.7		93.0				93.6		93.6
Fan Pulley Pitch Diameter (in.)				13.7			13.7		13.7				13.7		13.7
Motor Pulley Pitch Diameter (in.)				3.4			4.3		4.9				5.5		6.5
Resulting Fan Speed (rpm)				438			549		626				703		830
Belts Quantity...Type				2...BX60			2...5VX630		2...5VX630				2...5VX630		2...5VX650
Center Distance Range (in.)				17.74-14.30			17.74-14.30		17.63-14.01				17.63-14.01		16.63-12.87
OPTIONAL POWER EXHAUST						Centrifugal, 18 x 15		in. (Any motor available				on any unit)
Quantity...Motor Hp				2...3.0			2...5.0				2...7.5				2...10
Motor Frame Size			High Eff	56HZ			184T				213T				215T
Efficiency at Full Load (%) High/Premium			Prem Eff	182T			184T				213T				215T
				81.0/88.5			87.5/89.5				88.5/91.7				89.5/91.7
Fan Pulley Pitch Diameter (in.)			High Eff	11			10.4				12				12
			Prem Eff	11.0			10.4				12				12
Motor Pulley Pitch Diameter Range (in.)			High Eff	4.1-3.1			4.7-3.7				6.0-4.8				7.0-5.8
Motor Pulley Pitch Diameter Factory Setup (in.)			Prem Eff	4.1-3.1			4.7-3.7				6.0-4.8				7.0-5.8
				4.1			4.2				5.4				6.4
Blower Shaft Diameter at Pulley (in.)				17/16			17/16				17/16				17/16
Fan Rpm Range				500-656			621-785				717-882				854-1000
Factory Setup Fan Rpm				656			703				800				927
Maximum Allowable Rpm				1000			1000				1000				1000
Belts Quantity...No.			High Eff	1...BX71			1...BX71				1...BX77				1...BX79
Center Distance Range (in.)			Prem Eff	1...BX71			1...BX71				1...BX77				1...BX79
				23.62-26.50			23.62-26.50				23.62-26.50				23.62-26.50
FILTERS
Standard Efficiency Throwaway (Standard)				8...20 x 25 x 2									8...20 x 25 x 2
	Quantity...Size (in.)			8...20 x 20 x 2									8...20 x 20 x 2
Medium Efficiency (30%) Pleated (Optional)				8...20 x 25 x 2									8...20 x 25 x 2
	Quantity...Size (in.)			8...20 x 20 x 2									8...20 x 20 x 2
High Efficiency (90%) Bag Filters
	with High Velocity Prefilters (Optional)
	Quantity...Size (in.)			6...20 x 24 x 22									6...20 x 24 x 22
	Bag Filter
				6...20 x 20 x 22									6...20 x 20 x 22
	Prefilter			12...16 x 20 x 2									12...16 x 20 x 2
				3...20 x 24 x 2									3...20 x 24 x 2
OUTSIDE AIR SCREENS
Standard Hood (25%) Quantity...Size (in.)				None									None
OPTIONAL ECONOMIZER FILTER				5...20 x 20 x 2			Aluminum Frame, Permanent						5...20 x 20 x 1
Quantity...Size (in.)
				2...20 x 25 x 1									2...20 x 25 x 1
	LEGEND					*460-3-60 only.
CV	— Constant Volume
HGBP	— Hot Gas Bypass
MBtuh	—	Btuh in Thousands
TXV	—	Thermostatic Expansion Valve
VAV	—	Variable Air Volume

3

Table 1A — Physical Data (48ZG,ZN030-050) (cont)

BASE UNIT						48ZG,ZN040									48ZG,ZN050
NOMINAL CAPACITY (tons)						40									50
OPERATING WEIGHT (lb)				Standard Chassis			Extended Chassis						Standard Chassis					Extended Chassis
Base Unit
	Low Heat			6540				7040					6581					7081
	High Heat			6670				7170					6710					7210
With Economizer
	Low Heat			6841				7341					6881					7381
	High Heat			6970				7470					7010					7510
COMPRESSORS									Semi-Hermetic
Quantity...Type						2...06E									2...06E
Oil Charge (pints)						14									19, 14
Capacity Steps (%)
	CV					50,100									57,100
	VAV					25,50,75,100									18,37,56,63,81,100
Number of Refrigerant Circuits						2									2
REFRIGERANT										R-22
Operating Charge (lb), Ckt 1/Ckt 2
	Standard Evaporator Coil					40.0/40.0									41.5/39.0
	Standard Evaporator with HGBP					42.0/40.0									43.5/39.0
	Alternate High-Capacity Evaporator Coil					50.0/51.0									49.0/49.0
	Alternate High-Capacity Evaporator with HGBP					52.0/51.0									51.0/49.0
CONDENSER COILS									3/8-in. Tube Diameter
Quantity						2									2
Rows...Fins/in.
	Aluminum					3...15.0									3...15.0
	Copper (Optional)					3...13.7									3...13.7
Total Face Area (sq ft)						50.0									50.0
EVAPORATOR COILS
Quantity										2
Total Face Area (sq ft)										45.5
Refrigerant Feed Device...No. per Circuit										TXV...2
Standard Evaporator Coils						1/2 in. Tube Dia									1/2 in. Tube Dia
	Rows...Fins/in.					3...15.0									4...15.0
	Fin Type					Double Wavy									Double Wavy
	Tube Type					Cross Hatched									Cross Hatched
Alternate, High-Capacity Evaporator Coils						1/2 in. Tube Dia									1/2 in. Tube Dia
	Rows...Fins/in.					6...16.0									6...16.0
	Fin Type					Double Wavy									Double Wavy
	Tube Type					Cross Hatched									Cross Hatched
HEATING SECTION				Low Heat					High Heat				Low Heat					High Heat
Number of Heat Exchangers				1				2					1					2
Input (MBtuh)				325				650					325					650
Output (MBtuh)				263				527					263					527
Temperature Rise Range (F)				10-40				25-55					10-40					25-55
Efficiency (%)				81				81					81					81
Burner Orifice Diameter
	Quantity (in. ...drill no.)			7 (.1285...30)				14 (.1285...30)					7 (.1285...30)					14 (.1285...30)
Manifold Pressure (in. wg)				3.3				3.3					3.3					3.3
Line Pressure (in. wg) (min...max)				5.0...13.0				5.0...13.0					5.0...13.0					5.0...13.0
Firing Stages				2				2					2					2
Number of Gas Valves				1				2					1					2
CONDENSER FANS									Propeller Type
Quantity...Diameter (in.)						3...30									3...30
Nominal Cfm						26,000									26,000
Motor Hp...Rpm						1.0...1140									1.0...1140
SUPPLY FAN									Centrifugal 25 x 25 in.
Nominal Cfm						14,000									14,000
Maximum Allowable Cfm						20,000									20,000
Maximum Allowable Rpm						900									900
Shaft Diameter at Pulley (in.)						111/16									111/16
SUPPLY-FAN MOTOR AND DRIVE									(Any motor available on any unit)
Motor Hp				7.5		10			15		20				25			30*
Motor Frame Size				213T		215T			254T				256T		284T			286T
Efficiency at Full Load (%)
	High Efficiency			88.5		89.5			91.0		91.0				91.7			92.4
	Premium Efficiency			91.7		91.7			93.0		93.6				93.6			93.6
Fan Pulley Pitch Diameter (in.)				13.7		13.7			13.7		13.7				13.7			12.5
Motor Pulley Pitch Diameter (in.)				3.4		4.3			4.9		5.5				6.5			6.5
Resulting Fan Speed (rpm)				438		549			626		703				830			910
Belts Quantity...Type				2...BX60		2...5VX630			2...5VX630				2...5VX630		2...5VX650			3...5VX630
Center Distance Range (in.)				17.74-14.30		17.74-14.30			17.63-14.01		17.63-14.01				16.63-12.87			16.63-12.87
OPTIONAL POWER EXHAUST							Centrifugal, 18 x 15 in. (Any motor available on							any unit)
Quantity...Motor Hp				2...3.0				2...5.0					2...7.5					2...10
Motor Frame Size			High Eff	56HZ					184T				213T					215T
Efficiency at Full Load (%) High/Premium			Prem Eff	182T					184T				213T					215T
				81.0/88.5				87.5/89.5					88.5/91.7					89.5/91.7
Fan Pulley Pitch Diameter (in.)			High Eff	11				10.4					12					12
			Prem Eff	11.0				10.4					12					12
Motor Pulley Pitch Diameter Range (in.)			High Eff	4.1-3.1				4.7-3.7					6.0-4.8					7.0-5.8
Motor Pulley Pitch Diameter Factory Setup (in.)			Prem Eff	4.1-3.1				4.7-3.7					6.0-4.8					7.0-5.8
				4.1				4.2					5.4					6.4
Blower Shaft Diameter at Pulley (in.)				17/16				17/16					17/16					17/16
Fan Rpm Range				500-656				621-785					717-882					854-1000
Factory Setup Fan Rpm				656				703					800					927
Maximum Allowable Rpm				1000				1000					1000					1000
Belts Quantity...No.			High Eff	1...BX71					1...BX71				1...BX77					1...BX79
Center Distance Range (in.)			Prem Eff	1...BX71					1...BX71				1...BX77					1...BX79
				23.62-26.50				23.62-26.50					23.62-26.50					23.62-26.50
FILTERS
Standard Efficiency Throwaway (Standard)						8...20 x 25 x 2									8...20 x 25 x 2
	Quantity...Size (in.)					8...20 x 20 x 2									8...20 x 20 x 2
Medium Efficiency (30%) Pleated (Optional)						8...20 x 25 x 2									8...20 x 25 x 2
	Quantity...Size (in.)					8...20 x 20 x 2									8...20 x 20 x 2
High Efficiency (90%) Bag Filters
	with High Velocity Prefilters (Optional)
	Quantity...Size (in.)				6...20 x 24 x 22										6...20 x 24 x 22
	Bag Filter
					6...20 x 20 x 22										6...20 x 20 x 22
	Prefilter				12...16 x 20 x 2										12...16 x 20 x 2
						3...20 x 24 x 2									3...20 x 24 x 2
OUTSIDE AIR SCREENS
Standard Hood (25%) Quantity...Size (in.)						None									None
OPTIONAL ECONOMIZER FILTER						5...20 x 20 x 2			Aluminum Frame, Permanent						5...20 x 20 x 1
Quantity...Size (in.)
						2...20 x 25 x 1									2...20 x 25 x 1
	LEGEND
CV	— Constant Volume
HGBP	— Hot Gas Bypass
MBtuh	—	Btuh in Thousands
TXV	—	Thermostatic Expansion Valve
VAV	—	Variable Air Volume

*460-3-60 only.

4

Table 1B — Physical Data (48ZG,ZN055-070)

BASE UNIT		48ZG,ZN055				48ZG,ZN060						48ZG,ZN070
NOMINAL CAPACITY (tons)			55				60						70
OPERATING WEIGHT (lb)		Standard Chassis		Extended Chassis		Standard Chassis			Extended Chassis			Standard Chassis
	Base Unit
	Low Heat	8700		9248		9000			9,548				9,420
	High Heat	8820		9368		9120			9,668				9,550
	With Economizer
	Low Heat	9230		9730		9530			10,030				9,950
	High Heat	9350		9850		9650			10,450			10,080
COMPRESSORS						Semi-Hermetic
	Quantity...Type	2...06E				2...06E						2...06E
	Oil Charge (Pints)	19, 14					19						19
	Capacity Steps (%)
	CV	60,100				50,100						45,100
	VAV	20,40,60,80,100				17,33,50,67,83,100						14,29,43,51,66,71,85,100
	Number of Refrigerant Circuits		2				2						2
REFRIGERANT						R-22
	Operating Charge (lb), Ckt 1/Ckt 2
	Standard Evaporator Coil	59.0/44.5				61.0/61.0						70.5/64.5
	Standard Evaporator with HGBP	62.0/44.5				64.0/61.0						73.5/64.5
	Alternate High-Capacity Evaporator Coil	72.0/58.0				69.5/69.5						82.5/74.5
	Alternate High-Capacity Evaporator	75.0/58.0				72.5/69.5						85.5/74.5
	with HGBP
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
	Quantity				2
	Total Face Area (sq ft)				61.5
	Refrigerant Feed Device...No. per Circuit					TXV...2
	Standard Evaporator Coils					1/2 in. Tube Dia
	Rows...Fins/in.	3...17.0				4...17.0						4...17.0
	Fin Type	Double Wavy				Double Wavy						Double Wavy
	Tube Type	Smooth				Smooth						Smooth
	Alternate, High-Capacity Evaporator Coils					1/2 in. Tube Dia
	Rows...Fins/in.		6...16				6...16					6...16
	Fin Type	Double Wavy				Double Wavy						Double Wavy
	Tube Type	Cross Hatched				Cross Hatched						Cross Hatched
HEATING SECTION		Low Heat		High Heat		Low Heat			High Heat			Low Heat			High Heat
	Number of Heat Exchangers	2		3		2			3			2			3
	Input (MBtuh)	650		975		650			975			650			975
	Output (MBtuh)	527		790		527			790			527			790
	Temperature Rise Range (F)	10-40		20-50		10-40			20-50			10-40			20-50
	Efficiency (%)	81		81		81			81			81			81
	Burner Orifice Diameter
	Quantity (in. ...drill no.)	14 (.1285...30)		21 (.1285...30)		14 (.1285...30)			21 (.1285...30)			14 (.1285...30)			21 (.1285...30)
	Manifold Pressure (in. wg)	3.3		3.3		3.3			3.3			3.3			3.3
	Line Pressure (in. wg) (min...max)	5.0...13.0		5.0...13.0		5.0...13.0			5.0...13.0			5.0...13.0			5.0...13.0
	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
SUPPLY FAN						Centrifugal 25 x 25 in.
	Nominal Cfm	17,500				21,000						24,500
	Maximum Allowable Cfm	25,000				30,000						30,000
	Maximum Allowable Rpm		800				800						800
	Shaft Diameter at Pulley (in.)		111/16				111/16					111/16
SUPPLY-FAN MOTOR AND DRIVE						(Any motor available on any unit)
	Motor Hp		15			20			25			30			40
	Motor Frame Size		254T			256T			284T			286T			S324T
	Efficiency at Full Load (%)
	High Efficiency		91.0			91.0			91.7			92.4			93.0
	Premium Efficiency		93.0			93.6			93.6			93.6			94.5
	Fan Pulley Pitch Diameter (in.)		13.7			13.7			13.7			15.5			16.1
	Motor Pulley Pitch Diameter (in.)		4.5			5.1			5.5			5.9			6.7
	Resulting Fan Speed (rpm)		575			651			703			711			740
	Belts Quantity...Type	2...5VX1230				2...5VX1230			2...5VX1230			2...5VX1230			3...5VX1250
	Center Distance Range (in.)	48.25-44.00				48.25-44.00			48.50-44.25			48.50-44.25			48.25-44.00
OPTIONAL POWER EXHAUST				Centrifugal, 15 x 15 in. (Any motor available on any unit)
	Quantity...Motor Hp		2...5			2...7.5						2...10
	Motor Frame Size		184T				213T					215T
	Efficiency at Full Load (%) High/Premium	87.5/89.5				88.5/91.7						89.5/91.7
	Resulting Fan Rpm		740				820						920
	Maximum Allowable Rpm		1000				1000					1000
FILTERS
	Standard Efficiency Throwaway (Standard)	12...20 x 25 x 2				12...20 x 25 x 2						12...20 x 25 x 2
	Quantity...Size (in.)	12...20 x 20 x 2				12...20 x 20 x 2						12...20 x 20 x 2
	Medium Efficiency (30%) Pleated (Optional)	12...20 x 25 x 2				12...20 x 25 x 2						12...20 x 25 x 2
	Quantity...Size (in.)	12...20 x 20 x 2				12...20 x 20 x 2						12...20 x 20 x 2
	High Efficiency (90%) Bag Filters
	with High Velocity Prefilters (Optional)
	Quantity...Size (in.)	6...24 x 24 x 22				6...24 x 24 x 22						6...24 x 24 x 22
	Bag Filter
		6...24 x 20 x 22				6...24 x 20 x 22						6...24 x 20 x 22
	Prefilter	6...24 x 24 x 2				6...24 x 24 x 2						6...24 x 24 x 2
		6...20 x 24 x 2				6...20 x 24 x 2						6...20 x 24 x 2
OUTSIDE AIR SCREENS		4...25 x 16 x 1				4...25 x 16 x 1						4...25 x 16 x 1
	Standard Hood (25%) Quantity...Size (in.)
		2...20 x 16 x 1				2...20 x 16 x 1						2...20 x 16 x 1
OPTIONAL ECONOMIZER FILTER						Aluminum Frame, Permanent
	Quantity...Size (in.)	12...16 x 25 x 1				12...16 x 25 x 1						12...16 x 25 x 1
		2...16 x 20 x 1				2...16 x 20 x 1						2...16 x 20 x 1
	LEGEND
CV	— Constant Volume
HGBP — Hot Gas Bypass
MBtuh — Btuh in Thousands
TXV	— Thermostatic Expansion Valve
VAV	— Variable Air Volume

5

Table 1C — Physical Data (48ZG,ZN075-105)

BASE UNIT		48ZG,ZN075								48ZG,ZN090											48ZG,ZN105
NOMINAL CAPACITY (tons)		75								90													105
OPERATING WEIGHT (lb)
Base Unit without Economizer
Low Heat/High Heat		10,270/10,445								10,480/10,655										11,210/11,385
With Economizer
Low Heat/High Heat		10,800/10,975								11,010/11,185										11,740/11,915
COMPRESSOR											Semi-Hermetic
Number			2									2											4
Circuit (No. Cyl)		A (6)		B (6)						A (6)						B (6)				A1 (6), A2 (4)					B1 (6), B2 (4)
Model 06E		-275		-299						-299				-299						-275, -250					-275, -250
Oil Charge (pints)		19		19						19				19						19, 14					19, 14
Capacity Steps (%)
CV		43,100								50,100												50,100
VAV		14,29,43,51,66,86,100								17,33,50,67,83,100										20,30,40,50,60,60,70,80,80,90,100
Number of Refrigerant Circuits			2									2											2
REFRIGERANT														R-22
Operating Charge (lb), Ckt 1/Ckt 2
Standard Evaporator Coil		70.5/64.5								64.0/64.0												68.0/68.0
Standard Evaporator with HGBP		73.5/64.5								67.0/64.0												71.0/68.0
Alternate High-Capacity Evaporator Coil		83.0/75.0								76.0/76.0												79.5/79.5
Alternate High-Capacity Evaporator with HGBP		86.0/75.0								79.0/76.0												82.5/79.5
CONDENSER COILS										3/8-in. Tube Diameter
Quantity			4									4											4
Rows...Fins/in.
Aluminum		3...17.0								3...17.0												3...17.0
Copper (Optional)		3...15.7								3...15.7												3...15.7
Fin Type		Double Wavy								Lanced, Sine-wave											Lanced, Sine-wave
Tube Type		Smooth								Cross-Hatched											Cross-Hatched
Total Face Area (sq ft)		108.4								108.4												108.4
EVAPORATOR COILS
Quantity												2
Total Face Area (sq ft)												61.5
Refrigerant Feed Device...No. per Circuit												TXV...2
Standard Evaporator Coils		1/2 in. Tube Dia								3/8 in. Tube Dia											3/8 in. Tube Dia
Rows...Fins/in.		4...17.0								4...17.0												4...17.0
Fin Type		Double Wavy								Lanced, Sine Wave											Lanced, Sine Wave
Tube Type		Smooth								Cross Hatched											Cross Hatched
Alternate, High-Capacity Evaporator Coils											1/2 in. Tube Dia
Rows...Fins/in.		6...16								6...16												6...16
Fin Type		Double Wavy								Double Wavy											Double Wavy
Tube Type		Cross Hatched								Cross Hatched											Cross Hatched
HEATING SECTION		Low Heat		High Heat						Low Heat				High Heat						Low Heat					High Heat
Number of Heat Exchangers		2		3						2				3						2					3
Input (MBtuh)		650		975						650				975						650					975
Output (MBtuh)		527		790						527				790						527					790
Temperature Rise Range (F)		10-40		20-50						10-40				20-50						10-40					20-50
Efficiency (%)		81		81						81				81						81					81
Burner Orifice Diameter
Quantity (in. ...drill no.)		14 (.1285...30)		21 (.1285...30)						14 (.1285...30)				21 (.1285...30)						14 (.1285...30)					21 (.1285...30)
Manifold Pressure (in. wg)		3.3		3.3						3.3				3.3						3.3					3.3
Line Pressure (in. wg) (Min...Max)		5.0...13.0		5.0...13.0						5.0...13.0				5.0...13.0						5.0...13.0					5.0...13.0
Number of Gas Valves		2		3						2				3						2					3
CONDENSER FAN											Propeller Type
Quantity...Diameter (in.)		5...30								6...30												6...30
Nominal Cfm		50,000								60,000												60,000
Motor Hp (ea)...rpm		1.0...1140								1.0...1140										1.0...1140
STANDARD SUPPLY FAN										Forward Curved Centrifugal 36 x 30 in.
Nominal Cfm		24,500								29,750												35,000
Maximum Allowable Cfm		30,000								34,000												40,000
Maximum Allowable Rpm		670								670													670
Shaft Diameter at Pulley (in.)		111/16								111/16													111/16
STANDARD SUPPLY-FAN MOTOR AND DRIVE										(Any motor available on any unit)
Motor Hp			30					40								50							60
Motor Frame Size			S268T							S324T						S36T							S364T
Efficiency at Full Load (%)
High Efficiency			92.4					93.0								93.0							93.6
Premium Efficiency			93.6					94.5								94.5							95.4
Fan Pulley Pitch Diameter (in.)			18.5					18.5								18.5							18.5
Motor Pulley Pitch Diameter (in.)			5.3					5.7								6.5							7.1
Resulting Fan Rpm			501					539								615							672
Belts	Quantity...Type	3...5VX1320								4...5VX1320						4...5VX1320						4...5VX1320
Center Distance Range (in.)		47.88-45.01						47.64-44.76								47.42-44.52						47.42-44.52
ALTERNATE, AIRFOIL FAN														Airfoil
Nominal Airflow (cfm)		24,500								29,750												35,000
Maximum Allowable Airflow (cfm)		30,000								34,000												40,000
Maximum Allowable Wheel Speed (rpm)		1846								1846													1846
Shaft Diameter at Pulley (in.)		211/16								211/16													211/16
ALTERNATE SUPPLY-FAN MOTOR AND DRIVE										(Any motor available on any unit)
Motor Hp			30			40						50								60			75
Motor Frame Size		S268T						S324T						S36T						S364T					365T
Efficiency at Full Load (%)
High Efficiency		92.4				93.0						93.0								93.6			94.1
Premium Efficiency		93.6				94.5						94.5								95.4			95.4
Fan Pulley Pitch Diameter (in.)			9.7			10.2						8.9								8.9			10.8
Motor Pulley Pitch Diameter (in.)			7.5			8.7						8.1								8.7			11.1
Resulting Fan Rpm		1353				1493						1593								1711			1799
Belts	Quantity...Type	2...5VX1150				2...5VX1180						3...5VX1150								3...5VX1150					3...5VX1230
Center Distance Range (in.)		42.96-45.82				42.96-45.57						42.96-45.57								42.45-45.35			42.45-45.35

6

Table 1C — Physical Data (48ZG,ZN075-105) (cont)

BASE UNIT		48ZG,ZN075			48ZG,ZN090			48ZG,ZN105
OPTIONAL POWER EXHAUST			Centrifugal, 18 x 15 in. (Any motor available on any unit.)
Quantity...Motor Hp		2...5			2...7.5			2...10
Motor Frame Size		184T			213T			215T
Efficiency at Full Load (%)
	High Efficiency	87.5			88.5			89.5
	Premium Efficiency	89.5			91.7			91.7
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		1000			1000			1000
FILTERS
Standard Efficiency Throwaway		12...20 x 25 x 2			12...20 x 25 x 2			12...20 x 25 x 2
	(Standard)
	Quantity...Size (in.)	12...20 x 20 x 2			12...20 x 20 x 2			12...20 x 20 x 2
30% and 65% Pleated (Optional)		12...20 x 25 x 2			12...20 x 25 x 2			12...20 x 25 x 2
	Quantity...Size (in.)	12...20 x 20 x 2			12...20 x 20 x 2			12...20 x 20 x 2
OUTSIDE AIR SCREENS		4...25 x 16 x 1			4...25 x 16 x 1			4...25 x 16 x 1
Standard Hood (25%) Quantity...Size (in.)
		2...20 x 16 x 1			2...20 x 16 x 1			2...20 x 16 x 1
OPTIONAL ECONOMIZER FILTER					Aluminum Frame, Permanent
Quantity...Size (in.)		12...16 x 25 x 1			12...16 x 25 x 1			12...16 x 25 x 1
		2...16 x 20 x 1			2...16 x 20 x 1			2...16 x 20 x 1
	LEGEND
CV	— Constant Volume
HGBP — Hot Gas Bypass
MBtuh— Btuh in Thousands
TXV — Thermostatic Expansion Valve
VAV	— Variable Air Volume

7

Table 1D — Physical Data (48Z6,Z8075-105)

BASE UNIT		48Z6,Z8075									48Z6,Z8090											48Z6,Z8105
NOMINAL CAPACITY (tons)		75							90												105
OPERATING WEIGHT (lb)
Base Unit without Economizer
Low Heat/High Heat		11,740/11,915							11,950/12,125												12,680/12,855
With Economizer
Low Heat/High Heat		12,270/12,445							12,480/12,655												13,210/13,385
COMPRESSOR											Semi-Hermetic
Number		2							2																4
Circuit (No. Cyl)		A (6)			B (6)						A (6)					B (6)					A1 (6), A2 (4)						B1 (6), B2 (4)
Model 06E		-275			-299				-299							-299					-275, -250						-275, -250
Oil Charge (pints)		19			19				19							19					19, 14						19, 14
Capacity Steps (%)
CV		43,100							50,100												50,100
VAV		14,29,43,51,66,71,86,100							17,33,50,67,83,100												20,30,40,50,60,70,80,90,100
Number of Refrigerant Circuits		2							2																2
REFRIGERANT											R-22
Operating Charge (lb), Ckt 1/Ckt 2
Standard Evaporator Coil		70.5/64.5							64.0/64.0												68.0/68.0
Standard Evaporator with HGBP		73.5/64.5							67.0/64.0												71.0/68.0
Alternate High-Capacity Evaporator Coil		83.0/75.0							76.0/76.0												79.5/79.5
Alternate High-Capacity Evaporator with HGBP		86.0/75.0							79.0/76.0												82.5/79.5
CONDENSER COILS									3/8-in. Tube Diameter
Quantity		4							4																4
Rows...Fins/in.
Aluminum		3...17.0							3...17.0												3...17.0
Copper (Optional)		3...15.7							3...15.7												3...15.7
Fin Type		Double Wavy									Lanced, Sine-wave											Lanced, Sine-wave
Tube Type		Smooth									Cross-Hatched											Cross-Hatched
Total Face Area (sq ft)		108.4							108.4												108.4
EVAPORATOR COILS
Quantity									2
Total Face Area (sq ft)									61.5
Refrigerant Feed Device...No. per Circuit											TXV...2
Standard Evaporator Coils		1/2 in. Tube Dia									3/8 in. Tube Dia											3/8 in. Tube Dia
Rows...Fins/in.		4...17.0							4...17.0												4...17.0
Fin Type		Double Wavy									Lanced, Sine Wave											Lanced, Sine Wave
Tube Type		Smooth									Cross Hatched											Cross Hatched
Alternate, High-Capacity Evaporator Coils											1/2 in. Tube Dia
Rows...Fins/in.		6...16							6...16												6...16
Fin Type		Double Wavy									Double Wavy											Double Wavy
Tube Type		Cross Hatched									Cross Hatched											Cross Hatched
HEATING SECTION		Low Heat			High Heat				Low Heat							High Heat					Low Heat						High Heat
Number of Heat Exchangers		2			3				2							3					2						3
Input (MBtuh)		650			975				650							975					650						975
Output (MBtuh)		527			790				527							790					527						790
Temperature Rise Range (F)		10-40			20-50				10-40							20-50					10-40						20-50
Efficiency (%)		81			81				81							81					81						81
Burner Orifice Diameter
Quantity (in. ...drill no.)		14 (.1285...30)			21 (.1285...30)				14 (.1285...30)							21 (.1285...30)					14 (.1285...30)						21 (.1285...30)
Manifold Pressure (in. wg)		3.3			3.3				3.3							3.3					3.3						3.3
Line Pressure (in. wg) (Min...Max)		5.0...13.0			5.0...13.0				5.0...13.0							5.0...13.0					5.0...13.0						5.0...13.0
Number of Gas Valves		2			3				2							3					2						3
CONDENSER FAN											Propeller				Type
Quantity...Diameter (in.)		5...30							6...30												6...30
Nominal Cfm		50,000							60,000												60,000
Motor Hp (ea)...rpm		1.0...1140							1.0...1140												1.0...1140
STANDARD SUPPLY FAN						Forward Curved Centrifugal 36 x 30 in.
Nominal Cfm		24,500							29,750												35,000
Maximum Allowable Cfm		30,000							34,000												40,000
Maximum Allowable Rpm		670							670												670
Shaft Diameter at Pulley (in.)		111/16							111/16												111/16
STANDARD SUPPLY-FAN MOTOR AND DRIVE						(Any motor available on any unit.)
Motor Hp		30							40							50									60
Motor Frame Size		S268T							S324T							S36T								S364T
Efficiency at Full Load (%)
High Efficiency		92.4							93.0							93.0									93.6
Premium Efficiency		93.6							94.5							94.5									95.4
Fan Pulley Pitch Diameter (in.)		18.5							18.5							18.5									18.5
Motor Pulley Pitch Diameter (in.)		5.3							5.7							6.5									7.1
Resulting Fan Rpm		501							539							615									672
Belts	Quantity...Type	3...5VX1320					4...5VX1320									4...5VX1320						4...5VX1320
Center Distance Range (in.)		47.88-45.01					47.64-44.76									47.42-44.52						47.42-44.52
ALTERNATE, AIRFOIL FAN											Airfoil
Nominal Airflow (cfm)		24,500							29,750												35,000
Maximum Allowable Airflow (cfm)		30,000							34,000												40,000
Maximum Allowable Wheel Speed (rpm)		1846							1846												1846
Shaft Diameter at Pulley (in.)		211/16							211/16												211/16
ALTERNATE SUPPLY-FAN MOTOR AND DRIVE						(Any motor available on any unit.)
Motor Hp		30			40						50										60				75
Motor Frame Size		S268T			S324T						S36T								S364T								365T
Efficiency at Full Load (%)
High Efficiency		92.4			93.0						93.0								93.6						94.1
Premium Efficiency		93.6			94.5						94.5								95.4						95.4
Fan Pulley Pitch Diameter (in.)		9.7			10.2						8.9										8.9				10.8
Motor Pulley Pitch Diameter (in.)		7.5			8.7						8.1										8.7				11.1
Resulting Fan Rpm		1353			1493						1593								1711						1799
Belts	Quantity...Type	2...5VX1150			2...5VX1180						3...5VX1150							3...5VX1150									3...5VX1230
Center Distance Range (in.)		42.96-45.82			42.69-45.57						42.69-45.57							42.45-45.35							42.45-45.35

8

Table 1D — Physical Data (48Z6,Z8075-105) (cont)

BASE UNIT			48Z6,Z8075				48Z6,Z8090			48Z6,Z8105
RETURN/EXHAUST FAN			Plenum Fan, 47.13 in. (Any				motor available on any unit.)
Quantity...Motor Hp		1...20			1...25		1...30			1...40
Motor Frame Size		256T			284T		286T			324T
Efficiency at Full Load (%) High/Premium		91/93.6			91.7/93.6		92.4/93.6			93/93.8
Fan Pulley Pitch Diameter (in.)		8.5			9.8		8.5			8.5
Motor Pulley Pitch Diameter (in.)		5.3			6.7		6.1			6.7
Shaft Diameter at Pulley (in.)		215/16			215/16		215/16			215/16
Resulting Fan Rpm		1104			1209		1271			1396
Maximum Allowable Rpm		1447			1447		1447			1447
FILTERS
Standard Efficiency Throwaway (Standard)			12...20 x 25 x 2				12...20 x 25 x 2			12...20 x 25 x 2
	Quantity...Size (in.)		12...20 x 20 x 2				12...20 x 20 x 2			12...20 x 20 x 2
30% and 65% Pleated (Optional)			12...20 x 25 x 2				12...20 x 25 x 2			12...20 x 25 x 2
	Quantity...Size (in.)		12...20 x 20 x 2				12...20 x 20 x 2			12...20 x 20 x 2
OPTIONAL ECONOMIZER FILTER					Aluminum Frame, Permanent
Quantity...Size (in.)			12...16 x 25 x 1				12...16 x 25 x 1			12...16 x 25 x 1
			2...16 x 20 x 1				2...16 x 20 x 1			2...16 x 20 x 1
	LEGEND
CV	— Constant Volume
HGBP — Hot Gas Bypass
MBtuh— Btuh in Thousands
TXV — Thermostatic Expansion Valve
VAV	— Variable Air Volume

9

Table 1E — Physical Data (48ZT,ZW075-105)

BASE UNIT			48ZT,ZW075									48ZT,ZW090											48ZT,ZW105
NOMINAL CAPACITY (tons)				75									80									100
OPERATING WEIGHT (lb)
Base Unit without Economizer
Low Heat/High Heat			13,205/13,380								13,415/13,590											14,145/14,320
COMPRESSOR											Semi-Hermetic
Number				2									2												4
Circuit (No. Cyl)			A (6)		B (6)						A (6)						B (6)					A1 (6), A2 (4)					B1 (6), B2 (4)
Model 06E			-275		-299						-299				-299							-275, -250					-275, -250
Oil Charge (pints)			19		19						19				19							19, 14					19, 14
Capacity Steps (%)
CV			43,100										50,100									50,100
VAV			14,29,43,51,66,71,86,100								17,33,50,67,83,100											20,30,40,50,60,70,80,90,100
Number of Refrigerant Circuits				2									2												2
REFRIGERANT													R-22
Operating Charge (lb), Ckt 1/Ckt 2
Standard Evaporator Coil			70.5/64.5								64.0/64.0											68.0/68.0
Standard Evaporator with HGBP			73.5/64.5								67.0/64.0											71.0/68.0
Alternate High-Capacity Evaporator Coil			83.0/75.0								76.0/76.0											79.5/79.5
Alternate High-Capacity Evaporator with HGBP			86.0/75.0								79.0/76.0											82.5/79.5
CONDENSER COILS											3/8-in. Tube Diameter
Quantity				4									4												4
Rows...Fins/in.
Aluminum			3...17.0										3...17.0									3...17.0
Copper (Optional)			3...15.7										3...15.7									3...15.7
Fin Type			Double Wavy								Lanced, Sine-wave												Lanced, Sine-wave
Tube Type			Smooth								Cross-Hatched												Cross-Hatched
Total Face Area (sq ft)			108.4										108.4									108.4
EVAPORATOR COILS
Quantity													2
Total Face Area (sq ft)													61.5
Refrigerant Feed Device...No. per Circuit													TXV...2
Standard Evaporator Coils			1/2 in. Tube Dia								3/8 in. Tube Dia												3/8 in. Tube Dia
Rows...Fins/in.			4...17.0										4...17.0									4...17.0
Fin Type			Double Wavy								Lanced, Sine Wave												Lanced, Sine Wave
Tube Type			Smooth								Cross Hatched												Cross Hatched
Alternate, High-Capacity Evaporator Coils											1/2 in. Tube Dia
Rows...Fins/in.			6...16										6...16									6...16
Fin Type			Double Wavy									Double Wavy											Double Wavy
Tube Type			Cross Hatched								Cross Hatched												Cross Hatched
HEATING SECTION			Low Heat		High Heat						Low Heat						High Heat					Low Heat					High Heat
Number of Heat Exchangers			2		3						2				3							2					3
Input (MBtuh)			650		975						650				975							650					975
Output (MBtuh)			527		790						527				790							527					790
Temperature Rise Range (F)			10-40		20-50						10-40				20-50							10-40					20-50
Efficiency (%)			81		81						81				81							81					81
Burner Orifice Diameter
Quantity (in. ...drill no.)			14 (.1285...30)		21 (.1285...30)						14 (.1285...30)				21 (.1285...30)						14 (.1285...30)						21 (.1285...30)
Manifold Pressure (in. wg)			3.3		3.3						3.3				3.3							3.3					3.3
Line Pressure (in. wg)		(Min...Max)	5.0...13.0		5.0...13.0						5.0...13.0				5.0...13.0							5.0...13.0					5.0...13.0
Number of Gas Valves			2		3						2				3							2					3
CONDENSER FAN												Propeller					Type
Quantity...Diameter (in.)			5...30										6...30									6...30
Nominal Cfm			50,000										60,000									60,000
Motor Hp (ea)...rpm			1.0...1140								1.0...1140											1.0...1140
STANDARD SUPPLY FAN											Forward Curved Centrifugal 36 x 30										in.
Nominal Cfm			24,500										29,750									35,000
Maximum Allowable Cfm			30,000										34,000									40,000
Maximum Allowable Rpm			670										670									670
Shaft Diameter at Pulley (in.)			111/16										111/16									111/16
STANDARD SUPPLY-FAN MOTOR AND DRIVE											(Any motor available on any unit)
Motor Hp				30					40								50								60
Motor Frame Size				S268T							S324T						S36T							S364T
Efficiency at Full Load (%)
High Efficiency				92.4					93.0								93.0								93.6
Premium Efficiency				93.6					94.5								94.5								95.4
Fan Pulley Pitch Diameter (in.)				18.5					18.5								18.5								18.5
Motor Pulley Pitch Diameter (in.)				5.3					5.7								6.5								7.1
Resulting Fan Rpm				501					539								615								672
Belts	Quantity...Type		3...5VX1320								4...5VX1320						4...5VX1320						4...5VX1320
Center Distance Range (in.)			47.88-45.01						47.64-44.76								47.42-44.52						47.42-44.52
ALTERNATE, AIRFOIL FAN													Airfoil
Nominal Airflow (cfm)			24,500										29,750									35,000
Maximum Allowable Airflow (cfm)			30,000										34,000									40,000
Maximum Allowable Wheel Speed (rpm)			1846										1846									1846
Shaft Diameter at Pulley (in.)			211/16										211/16									211/16
ALTERNATE SUPPLY-FAN MOTOR AND DRIVE											(Any motor available on any unit)
Motor Hp			30						40				50									60			75
Motor Frame Size			S268T						S324T						S36T						S364T						365T
Efficiency at Full Load (%)
High Efficiency			92.4						93.0				93.0									93.6			94.1
Premium Efficiency			93.6						94.5				94.5									95.4			95.4
Fan Pulley Pitch Diameter (in.)				9.7					10.2				8.9									8.9			10.8
Motor Pulley Pitch Diameter (in.)				7.5					8.7				8.1									8.7			11.1
Resulting Fan Rpm			1353						1493				1593									1711			1799
Belts	Quantity...Type		2...5VX1150				2...5VX1180						3...5VX1150							3...5VX1150						3...5VX1230
Center Distance Range (in.)			42.96-45.82				42.96-45.57						42.96-45.57							42.45-45.35					42.45-45.35

10

Table 1E — Physical Data (48ZT,ZW075-105) (cont)

BASE UNIT			48ZT,ZW075						48ZT,ZW090			48ZT,ZW105
POWER EXHAUST			Centrifugal, 22 x 20 in., 111					/16 in. shaft diameter (Any motor available on any unit)
Total Hp			20			30		40		50		60
Quantity...Motor Hp		2	...10		2	...15		2...20		2...25		2...30
Motor Frame Size		S215T			D254T			S256T		S284T		S286T
Efficiency at Full Load (%)
	High Efficiency	89.5				91		91		91.7		92.4
	Premium Efficiency	91.7				93		93.6		93.6		93.6
Fan Sheave Pitch Diameter (in.)		12.4			12.4			11.1		11.1		11.1
Motor Sheave Pitch Diameter (in.)			4.8			5.8		5.9		6.5		6.9
Resulting Fan Rpm		714			841			928		1020		1094
Maximum Allowable Rpm		1175			1175			1175		1175		1175
Belts — Quantity...Type		2...	BX93		2...	BX93		2...5VX950		2...5VX950		2...5VX950
FILTERS
Standard Efficiency Throwaway (Standard)			12...20 x 25 x 2					12 20 x 25 x 2...				12...20 x 25 x 2
	Quantity...Size (in.)		12...20 x 20 x 2					12 20 x 20 x 2...				12...20 x 20 x 2
30% and 65% Pleated (Optional)			12...20 x 25 x 2					12 20 x 25 x 2...				12...20 x 25 x 2
	Quantity...Size (in.)		12...20 x 20 x 2					12 20 x 20 x 2...				12...20 x 20 x 2
OUTSIDE AIR SCREENS			8 25 x 16 x 1						8 25 x 16 x 1			8 25 x 16 x 1
Standard Hood (25%) Quantity Size (in.)
			2 20 x 16 x 1						2 20 x 16 x 1			2 20 x 16 x 1
	LEGEND
CV	— Constant Volume
HGBP — Hot Gas Bypass
MBtuh— Btuh in Thousands
TXV — Thermostatic Expansion Valve
VAV	— Variable Air Volume

Table 2 — Operating Weights of Options and Accessories (lb)

	OPTION OR ACCESSORY			UNIT SIZE
		030,035	040,050	055	060	070	075	090	105
	Roof Curb	450	480	515	515	515	560	560	560
	Condenser Section Roof Curb	—	—	540	540	625	625	625	625
	Economizer*	300	300	530	530	530	530	530	530
	Power Exhaust*	600	600	710	710	710	710	710	710
	Barometric Relief	200	200	200	200	200	200	200	200
	Return Exhaust Fan*	—	—	—	—	—	1470	1470	1470
	High-Efficiency Filters	20	20	20	20	20	—	—	—
	Bag Filters	35	35	40	40	40	—	—	—
	Hail Guard	120	150	145	145	210	210	210	210
	Copper Condenser Coil Fins	180	235	235	235	420	420	420	420
	Inlet Guide Vanes	95	95	115	115	115	115	115	115
	Variable Frequency Drive
	7.5 hp	65	65	—	—	—	—	—	—
	10 hp	65	65	—	—	—	—	—	—
	15 hp	110	110	110	110	110	—	—	—
	20 hp	111	111	111	111	111	—	—	—
	25 hp	190	190	190	190	190	—	—	—
	30 hp	—	190	190	190	190	152	152	152
	40 hp	—	—	190	190	190	155	155	155
	50 hp	—	—	—	—	—	263	263	263
	60 hp	—	—	—	—	—	266	266	266
	75 hp	—	—	—	—	—	266	266	266
	High-Capacity Evaporator Coil	—	300	300	300	300	300	300	300

*Includes hood.

11

Table 3 — Supply Fan Drive Data

	HP	SHAFT	SPEED	MOTOR	MOTOR	WHEEL	WHEEL	QUANTITY
		DIA (in.)	(rpm)	SHEAVE	PITCH DIA (in.)	SHEAVE	PITCH DIA (in.).	...BELT
	Sizes 030-050
	7.5	13/8	438	2BK36	3.4	2B5V136	13.7	2...BX60
	10	13/8	549	2B5V42	4.3	2B5V136	13.7	2...5VX630
	15	15/8	626	2B5V48	4.9	2B5V136	13.7	2...5VX630
	20	15/8	703	2B5V54	5.5	2B5V136	13.7	2...5VX630
	25	17/8	830	2B5V64	6.5	2B5V136	13.7	2...5VX650
	30*	17/8	910	3B5V64	6.5	3B5V124	12.5	3...5VX630
	Sizes 055-070
	15	15/8	575	2B5V44	4.5	2B5V136	13.7	2...5VX1230
	20	15/8	651	2B5V50	5.1	2B5V136	13.7	2...5VX1230
	25	17/8	703	2B5V54	5.5	2B5V136	13.7	2...5VX1230
	30	17/8	711	2B5V62	6.3	2B5V154	15.5	2...5VX1230
	40	21/8	740	3B5V66	6.7	3B5V160	16.1	3...5VX1250
	Sizes 075-105 (Forward Curved Fan)
	30	17/8	501	3B5V52	5.33	B5V184	18.5	3...5VX1320
	40	21/8	539	4B5V56	5.74	B5V184	18.5	4...5VX1320
	50	21/8	615	4B5V64	6.54	B5V184	18.5	4...5VX1320
	60	23/8	672	4B5V70	7.14	B5V184	18.5	4...5VX1320
	Sizes 075-105 (Airfoil Fan)
	30	17/8	1353	2B5V74	7.5	2Q5V97	9.7	2...5VX1150
	40	21/8	1493	2B5V86	8.7	2Q5V103	10.2	2...5VX1180
	50	21/8	1593	3B5V80	8.1	3R5V90	8.9	3...5VX1150
	60	23/8	1711	3B5V86	8.7	3R5V90	8.9	3...5VX1150
	75	23/8	1799	3B5V110	11.1	3R5V109	10.8	3...5VX1230

*Sizes 040,050 only.						NOTE: Part numbers are Browning Manufacturing Corp. reference.
				Table 4 — Power Exhaust Fan Drive Data
TOTAL	MOTOR	MOTOR	FAN		MOTOR	MOTOR SHEAVE	FAN	FAN SHEAVE	BELTS	CENTER DIST
		SHAFT	SPEED		SHEAVE	PITCH	SHEAVE	PITCH
HP	QTY...HP								QTY...P/N	RANGE (in.)
		DIA (in.)	RPM		P/N	DIA (in.)	P/N	DIA (in.)
Sizes 030-050
6*	2...3	7/8	656		1VL44	4.1	BK115	11	1...BX71	23.62-26.50
6†	2...3	11/8	656		1VP44L	4.1	BK115	11	1...BX71	23.62-26.50
10**	2...5	11/8	785		1VP50L	4.7	BK110	10.4	1...BX71	23.62-26.50
15**	2...7.5	13/8	882		1VP65	6.0	BK130	12	1...BX77	23.62-26.50
20**	2...10	13/8	1000		1VP75	7.0	BK130	12	1...BX79	23.62-26.50
Sizes 055-105
10	2...5	11/8	740		2P3V45	4.5	2Q3V106	10.6	2...3VX800	26.8-28.5
15	2...7.5	13/8	820		2P3V50	5.0	2Q3V106	10.6	2...3VX800	26.8-28.5
20	2...10	13/8	920		2P3V56	5.6	2Q3V106	10.6	2...3VX800	26.8-28.5

*High-Efficiency Motor Option. †Premium-Efficiency Motor Option. **Applies to both motor options.

NOTE: Part numbers are Browning Manufacturing Corp. reference.

Table 5 — High-Capacity Power Exhaust Fan Drive Data (48ZT,ZW Units)

TOTAL	MOTOR	MOTOR	SPEED	MOTOR SHEAVE		BLOWER SHEAVE			CENTER DISTANCE
HP	QTY...HP	SHAFT	RPM	Part	Pitch Diameter	Part	Pitch Diameter	QTY...BELT	RANGE (in.)
		DIA. (in.)		Number	(in.)	Number	(in.)
20	2...10	1.375	714	2B5V48	4.8	2B5V124	12.4	2...BX93	32.8 to 36.7
30	2...15	1.625	841	2B5V58	5.8	2B5V124	12.4	2...BX93	32.6 to 36.5
40	2...20	1.625	928	2B5V58	5.9	2B5V110	11.1	2...5VX950	32.6 to 36.5
50	2...25	1.875	1020	2B5V64	6.5	2B5V110	11.1	2...5VX950	32.5 to 36.3
60	2...30	1.875	1094	2B5V68	6.9	2B5V110	11.1	2...5VX950	32.5 to 36.3

Table 6 — Return/Exhaust Fan Drive Data (48Z6,Z8 Units)

			MOTOR		MOTOR SHEAVE		BLOWER SHEAVE
	TOTAL	MOTOR	SHAFT	SPEED	Part	Pitch	Part	Pitch	QTY...BELT	CENTER DISTANCE
	HP	QTY...HP		RPM		Diameter		Diameter		RANGE (in.)
			DIA. (in.)		Number		Number
						(in.)		(in.)
	20	1...20	1.625	1104	3B5V52	5.3	3R5V85	8.5	3...5VX1000	38.1 to 41.0
	25	1...25	1.875	1209	3B5V66	6.7	3R5V97	9.8	3...5VX1060	38.9 to 41.8
	30	1...30	1.875	1271	3B5V60	6.1	3R5V85	8.5	3...5VX1030	38.9 to 41.8
	40	1...40	2.125	1396	3B5V66	6.7	3R5V85	8.5	3...5VX1060	39.9 to 42.8

12

*

13

	UNIT TYPE	DIMENSION	UNIT SIZE	UNIT SIZE
			030,035	040,050
	VERTICAL SUPPLY AND RETURN	A	21′-81/16″	25′-811/16″
	WITH GAS HEAT	B	13′-311/16″	16′-05/8″
	VERTICAL SUPPLY AND RETURN WITH	A	23′-91/4″	27′-95/16″
	GAS HEAT AND EXTENDED CHASSIS	B	15′-47/16″	18′-17/8″

Fig. 1 — Roof Curb; Sizes 030-050

*

14

	UNIT TYPE	DIMENSION	UNIT SIZE
			055-105
	VERTICAL SUPPLY AND RETURN	A	27′-911/16″
	WITH GAS HEAT	B	22′-103/16″
	VERTICAL SUPPLY AND RETURN WITH	A	29′-107/8″
	GAS HEAT AND EXTENDED CHASSIS	B	24′-113/8″

Fig. 2 — Roof Curb; Sizes 055-070 and Sizes 075-105 without High-Capacity Power Exhaust

15

Fig. 3 — Roof Curb; Sizes 075-105 with High-Capacity Power Exhaust

*

16

Fig. 4 — Condenser Section Roof Curb (Size 055 and 060 Only)

17

*

Fig. 5 — Condenser Section Roof Curb (Size 070-105 Only)

"X"

A

A

CONDENSER

END SUPPORT

4

1

4 REF.

9 3/4"

2

3

"X"-

NO GASKET

DETAIL A-A

Fig. 6 — Gasket Location on Roof Curb (48ZG,ZN055-105 and 48Z6,Z8075-105 Units)

5

5

Fig. 7 — Gasket Location — Condenser Section Roof Curb (Size 055-105 Units)

18

Fig. 8 — Gasket Location on Roof Curb (48ZT,ZW075-105 Units)

CAUTION

NOTICE TO RIGGERS

1.ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2.DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT		WEIGHT		A				B		ECONOMIZER
	lb		kg	in.		mm	in.		mm	lb	kg
48Z030	5770		2623	83.23		2114	176.14		4474	300	136
48Z035	5895		2679	83.23		2114	177.99		4521	300	136
48Z040	6670		3032	92.64		2353	205.87		5229	300	136
48Z050	6710		3050	92.64		2353	207.01		5258	300	136

Fig. 9 — Rigging Label — Size 030-050 Units (Standard Chassis)

19

CAUTION

NOTICE TO RIGGERS

1.ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2.DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT	WEIGHT			A			B		ECONOMIZER
	lb		kg	in.	mm	in.		mm	lb	kg
48Z055	8,820		4009	128.75	3270	235.0		5969	530	240.9
48Z060	9,120		4145	128.75	3270	235.0		5969	530	240.9
48Z070	9,550		4341	112.50	2858	252.0		6401	530	240.9
48ZG,ZN075	10,445		4738	127.80	3247	260.6		6618	530	240.9
48ZG,ZN090	10,655		4833	127.80	3247	262.4		6666	530	240.9
48ZG,ZN105	11,385		5164	127.80	3247	271.0		6883	530	240.9
48Z6,Z8075	11,915		5405	127.80	3247	260.6		6618	530	240.9
48Z6,Z8090	12,125		5500	127.80	3247	262.4		6666	530	240.9
48Z6,Z8105	12,855		5831	127.80	3247	271.0		6883	530	240.9

Fig. 10 — Rigging Label — Size 055-105 Units (Standard Chassis)

CAUTION

NOTICE TO RIGGERS

1.ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2.DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT		WEIGHT		A				B		ECONOMIZER
	lb		kg	in.		mm	in.		mm	lb	kg
48Z030	6270		2844	95.83		2434	192.56		4891	300	136
48Z035	6395		2900	95.83		2434	194.72		4946	300	136
48Z040	7170		3252	105.24		2673	222.44		5650	300	136
48Z050	7210		3270	105.24		2673	223.50		5677	300	136

Fig. 11 — Rigging Label — Size 030-050 Units (Extended Chassis)

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CAUTION

NOTICE TO RIGGERS

1.ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2.DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT		WEIGHT			A			B		ECONOMIZER
	lb		kg	in.		mm	in.		mm	lb	kg
48Z055	9548		4330	121.50		3085.5	248.50		6312	530	240.9
48Z060	9668		4385	121.50		3085.5	248.50		6312	530	240.9

Fig. 12 — Rigging Label — Size 055,060 Units (Extended Chassis)

CAUTION

NOTICE TO RIGGERS

1.ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2.DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT		WEIGHT			A
	lb		kg	in.		mm
48Z075	13,380		6069	298.9		7591
48Z090	13,590		6164	300.7		7637
48Z105	14,320		6495	309.9		7873

Fig. 13 — Rigging Label — 48ZT,ZW075-105 Units (High-Capacity Power Exhaust Units)

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