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

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Single Package Gas Heating and Electric Cooling Units

with Direct Spark Ignition and COMFORTLINK™ Controls

Installation Instructions

WEATHERMASTER

48ZG,ZN030-105

48ZT,ZW,Z6,Z8075-105

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

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

(CCN) Interface. . . . . . . 60

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 —

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.

Complete the following checks before

CAUTION

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

Unit Placement — Inspect unit for transportation dam-

age. 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 distribu-

tion 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 ( 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) thickness gasket along both side rails (5).

/2-in. thick x 11/2-in.

— Apply single-

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.

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) 88, 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 22

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

Quantity 22 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

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 1212 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 2222 Number of Gas Valves 1212

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.) 1

SUPPLY-FAN MOTOR AND DRIVE (Any motor available on any unit)

Motor Hp 7.510152025 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 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

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.) 4.1 4.2 5.4 6.4 Blower Shaft Diameter at Pulley (in.) 1 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.) 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.)

Prem Eff 182T 184T 213T 215T

Prem Eff 11.0 10.4 12 12

Prem Eff 4.1-3.1 4.7-3.7 6.0-4.8 7.0-5.8

Prem Eff 1...BX71 1...BX71 1...BX77 1...BX79

Bag Filter

Prefilter

OUTSIDE AIR SCREENS

Standard Hood (25%) Quantity...Size (in.) None None

OPTIONAL ECONOMIZER FILTER Aluminum Frame, Permanent

Quantity...Size (in.)

/2 in. Tube Dia

6...20 x 24 x 22

6...20 x 20 x 22

12...16 x 20 x 2

3...20 x 24 x 2

5...20 x 20 x 2

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 — Var iabl e Ai r Volu me

17/

/8-in. Tube Diameter

17/

/2 in. Tube Dia

111/

6...20 x 24 x 22

6...20 x 20 x 22

12...16 x 20 x 2

3...20 x 24 x 2

5...20 x 20 x 1

2...20 x 25 x 1

17/

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 22

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

Quantity 22 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

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

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 1212 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 2222 Number of Gas Valves 1212

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.) 1

SUPPLY-FAN MOTOR AND DRIVE (Any motor available on any unit)

Motor Hp 7.51015202530* 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 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

Motor Pulley Pitch Diameter Range (in.) High Eff 4.1-3.1 4.7-3.7 6.0-4.8 7.0-5.8

Center Distance Range (in.) 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.)

Prem Eff 182T 184T 213T 215T

Prem Eff 11.0 10.4 12 12

Prem Eff 4.1-3.1 4.7-3.7 6.0-4.8 7.0-5.8

Prem Eff 1...BX71 1...BX71 1...BX77 1...BX79

Bag Filter

Prefilter

OUTSIDE AIR SCREENS

Standard Hood (25%) Quantity...Size (in.) None None

OPTIONAL ECONOMIZER FILTER Aluminum Frame, Permanent

Quantity...Size (in.)

/2 in. Tube Dia

6...20 x 24 x 22

6...20 x 20 x 22

12...16 x 20 x 2

3...20 x 24 x 2

5...20 x 20 x 2

2...20 x 25 x 1

LEGEND

CV — Constant Volume HGBP — Hot Gas Bypass MBtuh — Btuh in Thousands TXV — Thermostatic Expansion Valve VAV — Var iabl e Ai r Volu me

*460-3-60 only

17/

/8-in. Tube Diameter

17/

/2 in. Tube Dia

111/

6...20 x 24 x 22

6...20 x 20 x 22

12...16 x 20 x 2

3...20 x 24 x 2

5...20 x 20 x 1

2...20 x 25 x 1

17/

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 222

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

with HGBP

CONDENSER COILS

Quantity 444 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

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

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 232323 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 222222 Number of Gas Valves 232323

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/

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.)

Bag Filter

Prefilter

OUTSIDE AIR SCREENS

Standard Hood (25%) Quantity...Size (in.)

OPTIONAL ECONOMIZER FILTER Aluminum Frame, Permanent

Quantity...Size (in.)

LEGEND

CV — Constant Volume HGBP — Hot Gas Bypass MBtuh — Btuh in Thousands TXV — Thermostatic Expansion Valve VAV — Variable Air Volume

75.0/58.0 72.5/69.5 85.5/74.5

/8-in. Tube Diameter

/2 in. Tube Dia

6...24 x 24 x 22

6...24 x 20 x 22

6...24 x 24 x 2

6...20 x 24 x 2

4...25 x 16 x 1

2...20 x 16 x 1

12...16 x 25 x 1

2...16 x 20 x 1

111/

6...24 x 24 x 22

6...24 x 20 x 22

6...24 x 24 x 2

6...20 x 24 x 2

4...25 x 16 x 1

2...20 x 16 x 1

12...16 x 25 x 1

2...16 x 20 x 1

6...24 x 24 x 22

6...24 x 20 x 22

6...24 x 24 x 2

6...20 x 24 x 2

4...25 x 16 x 1

2...20 x 16 x 1

12...16 x 25 x 1

2...16 x 20 x 1

111/

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 22 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 22 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

Quantity 44 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

Rows...Fins/in. 4...17.0 4...17.0 4...17.0 Fin Type Double Wavy Lanced, Sine Wave Lanced, Sine Wave Tub e Ty p e Smooth Cross Hatched Cross Hatched

Alternate, High-Capacity Evaporator Coils

Rows...Fins/in. 6...16 6...16 6...16 Fin Type Double Wavy Double Wavy Double Wavy Tub e Ty p e Cross Hatched Cross Hatched Cross Hatched

HEATING SECTION Low Heat High Heat Low Heat High Heat Low Heat High Heat

Number of Heat Exchangers 2323 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 2323 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.) 1

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.) 2

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

/2 in. Tube Dia

/8-in. Tube Diameter

/8 in. Tube Dia

/2 in. Tube Dia

111/

211/

/8 in. Tube Dia

111/

211/

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.) 1 Resulting Fan Rpm 740 820 920 Maximum Allowable Rpm 1000 1000 1000

FILTERS

Standard Efficiency Throwaway

(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

Standard Hood (25%) Quantity...Size (in.)

OPTIONAL ECONOMIZER FILTER Aluminum Frame, Permanent

Quantity...Size (in.)

LEGEND

CV — Constant Volume HGBP — Hot Gas Bypass MBtuh— Btuh in Thousands TXV — Thermostatic Expansion Valve VAV — Va r ia b le A ir Vo lum e

17/

12...20 x 25 x 2 12...20 x 25 x 2 12...20 x 25 x 2

4...25 x 16 x 1

2...20 x 16 x 1

12...16 x 25 x 1

2...16 x 20 x 1

4...25 x 16 x 1

2...20 x 16 x 1

12...16 x 25 x 1

2...16 x 20 x 1

4...25 x 16 x 1

2...20 x 16 x 1

12...16 x 25 x 1

2...16 x 20 x 1

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 224 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 222

REFRIGERANT R-22

Operating Charge (lb), Ckt 1/Ckt 2

CONDENSER COILS

Quantity 444 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

Rows...Fins/in. 4...17.0 4...17.0 4...17.0 Fin Type Double Wavy Lanced, Sine Wave Lanced, Sine Wave Tub e Ty p e Smooth Cross Hatched Cross Hatched

Alternate, High-Capacity Evaporator Coils

Rows...Fins/in. 6...16 6...16 6...16 Fin Type Double Wavy Double Wavy Double Wavy Tub e Ty p e 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 32323 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 32323

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.) 1

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

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.) 2

ALTERNATE SUPPLY-FAN MOTOR AND DRIVE (Any motor available on any unit.)

Motor Hp Motor Frame Size Efficiency at Full Load (%)

High Efficiency

Premium Efficiency Fan Pulley Pitch Diameter (in.) Motor Pulley Pitch Diameter (in.) Resulting Fan Rpm Belts Quantity...Type Center Distance Range (in.)

/2 in. Tube Dia

30 40 50 60 75

S268T S324T S36T S364T 365T

92.4 93.0 93.0 93.6 94.1

93.6 94.5 94.5 95.4 95.4

9.7 10.2 8.9 8.9 10.8

7.5 8.7 8.1 8.7 11.1

1353 1493 1593 1711 1799

2...5VX1150 2...5VX1180 3...5VX1150 3...5VX1150 3...5VX1230

42.96-45.82 42.69-45.57 42.69-45.57 42.45-45.35 42.45-45.35

/8-in. Tube Diameter

/8 in. Tube Dia

/2 in. Tube Dia

111/

211/

/8 in. Tube Dia

111/

211/

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.) 2 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.)

LEGEND

CV — Constant Volume HGBP — Hot Gas Bypass MBtuh— Btuh in Thousands TXV — Thermostatic Expansion Valve VAV — Va r ia b le A ir Vo lum e

12...16 x 25 x 1

2...16 x 20 x 1

215/

12...16 x 25 x 1

2...16 x 20 x 1

215/

12...16 x 25 x 1

2...16 x 20 x 1

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 224 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 222

REFRIGERANT

Operating Charge (lb), Ckt 1/Ckt 2

CONDENSER COILS

Quantity 444 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

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

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

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) 3.33.33.33.33.33.3 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 232323

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.) 1

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

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.) 2

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

/2 in. Tube Dia

R-22

/8-in. Tube Diameter

/8 in. Tube Dia

/2 in. Tube Dia

111/

211/

/8 in. Tube Dia

111/

211/

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

BASE UNIT 48ZT,ZW075 48ZT,ZW090 48ZT,ZW105 POWER EXHAUST Centrifugal, 22 x 20 in., 1

Tot a l 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

Standard Hood (25%) Quantity...Size (in.)

LEGEND

CV — Constant Volume HGBP — Hot Gas Bypass MBtuh— Btuh in Thousands TXV — Thermostatic Expansion Valve VAV — Va r ia b le A ir Vo lum e

8...25 x 16 x 1

2...20 x 16 x 1

/16 in. shaft diameter (Any motor available on any unit)

8...25 x 16 x 1

2...20 x 16 x 1

8...25 x 16 x 1

2...20 x 16 x 1

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

OPTION OR ACCESSORY

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 10 hp 15 hp 20 hp 25 hp 30 hp 40 hp 50 hp 60 hp 75 hp

High-Capacity Evaporator Coil — 300 300 300 300 300 300 300

030,035 040,050 055 060 070 075 090 105

65 110 111 190 — — — — —

65 110 111 190 190

— — —

—

UNIT SIZE

—

— 110 111 190 190 190

—

— 110 111 190 190 190

—

— 110 111 190 190 190

—

— — — —

— 152 155 263 266 266

— — — —

— 152 155 263 266 266

*Includes hood.

— — — —

— 152 155 263 266 266

Table 3 — Supply Fan Drive Data

SHAFT

DIA (in.)

SPEED

(rpm)

MOTOR

SHEAVE

MOTOR

PITCH DIA (in.)

WHEEL

SHEAVE

WHEEL

PITCH DIA (in.).

QUANTITY

...BELT

Sizes 030-050

7.5 1 10 1 15 1 20 1 25 1

30* 1

438 2BK36 3.4 2B5V136 13.7 2...BX60 549 2B5V42 4.3 2B5V136 13.7 2...5VX630 626 2B5V48 4.9 2B5V136 13.7 2...5VX630 703 2B5V54 5.5 2B5V136 13.7 2...5VX630 830 2B5V64 6.5 2B5V136 13.7 2...5VX650 910 3B5V64 6.5 3B5V124 12.5 3...5VX630

Sizes 055-070

15 1 20 1 25 1 30 1 40 2

575 2B5V44 4.5 2B5V136 13.7 2...5VX1230 651 2B5V50 5.1 2B5V136 13.7 2...5VX1230 703 2B5V54 5.5 2B5V136 13.7 2...5VX1230 711 2B5V62 6.3 2B5V154 15.5 2...5VX1230 740 3B5V66 6.7 3B5V160 16.1 3...5VX1250

Sizes 075-105 (Forward Curved Fan)

30 1 40 2 50 2 60 2

501 3B5V52 5.33 B5V184 18.5 3...5VX1320 539 4B5V56 5.74 B5V184 18.5 4...5VX1320 615 4B5V64 6.54 B5V184 18.5 4...5VX1320 672 4B5V70 7.14 B5V184 18.5 4...5VX1320

Sizes 075-105 (Airfoil Fan)

30 1 40 2 50 2 60 2 75 2

1353 2B5V74 7.5 2Q5V97 9.7 2...5VX1150 1493 2B5V86 8.7 2Q5V103 10.2 2...5VX1180 1593 3B5V80 8.1 3R5V90 8.9 3...5VX1150 1711 3B5V86 8.7 3R5V90 8.9 3...5VX1150 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

TOTALHPMOTOR

QTY...HP

MOTOR

SHAFT

DIA (in.)

FAN

SPEED

RPM

MOTOR

SHEAVE

P/N

MOTOR SHEAVE

PITCH

DIA (in.)

FAN

SHEAVE

P/N

FAN SHEAVE

PITCH

DIA (in.)

BELTS

QTY...P/N

CENTER DIST

Sizes 030-050

6* 2...3

6† 2...3 1 10** 2...5 1 15** 2...7.5 1 20** 2...10 1

656 1VL44 4.1 BK115 11 1...BX71 23.62-26.50 656 1VP44L 4.1 BK115 11 1...BX71 23.62-26.50 785 1VP50L 4.7 BK110 10.4 1...BX71 23.62-26.50 882 1VP65 6.0 BK130 12 1...BX77 23.62-26.50

1000 1VP75 7.0 BK130 12 1...BX79 23.62-26.50

Sizes 055-105

10 2...5 1 15 2...7.5 1 20 2...10 1

*High-Efficiency Motor Option. †Premium-Efficiency Motor Option.

**Applies to both motor options.

740 2P3V45 4.5 2Q3V106 10.6 2...3VX800 26.8-28.5 820 2P3V50 5.0 2Q3V106 10.6 2...3VX800 26.8-28.5 920 2P3V56 5.6 2Q3V106 10.6 2...3VX800 26.8-28.5

NOTE: Part numbers are Browning Manufacturing Corp. reference.

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

TOTALHPMOTOR

QTY...HP

MOTOR

SHAFT

DIA. (in.)

SPEED

RPM

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

MOTOR SHEAVE BLOWER SHEAVE

Part

Number

Pitch Diameter

(in.)

Part

Number

Pitch Diameter

(in.)

QTY...BELT

CENTER DISTANCE

RANGE (in.)

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

RANGE (in.)

TOTALHPMOTOR

QTY...HP

MOTOR

SHAFT

DIA. (in.)

SPEED

RPM

MOTOR SHEAVE BLOWER SHEAVE

Part

Number

Pitch

Diameter

(in.)

Part

Number

Diameter

Pitch

(in.)

QTY...BELT

CENTER DISTANCE

RANGE (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

″

16′-0

18′-1

27′-9

040,050

25′-8

UNIT SIZE

″

23′-9

21′-8

030,035

UNIT SIZE

15′-4

13′-3

UNIT TYPE DIMENSION

WITH GAS HEAT

VERTICAL SUPPLY AND RETURN

VERTICAL SUPPLY AND RETURN WITH

Fig. 1 — Roof Curb; Sizes 030-050

GAS HEAT AND EXTENDED CHASSIS

″

055-105

UNIT SIZE

24′-11

29′-10

27′-9

22′-10

UNIT TYPE DIMENSION

WITH GAS HEAT

VERTICAL SUPPLY AND RETURN

VERTICAL SUPPLY AND RETURN WITH

GAS HEAT AND EXTENDED CHASSIS

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

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

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

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

"X"

CONDENSER END SUPPORT

4 REF.

9 3/4"

"X"-

NO GASKET

DETAIL A-A

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

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

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

CAUTION

1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2. DO NOT ATTEMPT TO FORK THESE UNITS.

NOTICE TO RIGGERS

UNIT

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

WEIGHT A B ECONOMIZER

lb kg in. mm in. mm lb kg

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

CAUTION

1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2. DO NOT ATTEMPT TO FORK THESE UNITS.

NOTICE TO RIGGERS

UNIT

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

WEIGHT A B ECONOMIZER

lb kg in. mm in. mm lb kg

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

CAUTION

1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2. DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT

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

WEIGHT A B ECONOMIZER

lb kg in. mm in. mm lb kg

NOTICE TO RIGGERS

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

CAUTION

1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2. DO NOT ATTEMPT TO FORK THESE UNITS.

NOTICE TO RIGGERS

UNIT

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

WEIGHT A B ECONOMIZER

lb kg in. mm in. mm lb kg

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

CAUTION

1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.

2. DO NOT ATTEMPT TO FORK THESE UNITS.

UNIT

48Z075 13,380 6069 298.9 7591 48Z090 13,590 6164 300.7 7637 48Z105 14,320 6495 309.9 7873

NOTICE TO RIGGERS

WEIGHT A

lb kg in. mm

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

UNITS 48ZG,ZN SIZE

VERTICAL SUPPLY AND RETURN/ LOW GAS HEAT

VERTICAL SUPPLY AND RETURN/ HIGH GAS HEAT

VERTICAL SUPPLY AND RETURN/ EXTENDED CHASSIS/LOW GAS HEAT

VERTICAL SUPPLY AND RETURN/ EXTENDED CHASSIS/HIGH GAS HEAT

CORNER WEIGHTS (lb)

1 2 3 4 ft-in. ft-in.

030 1968 1004 1005 1964 5,941 14- 9 035 1851 1184 1142 1889 6,066 14-11 3-913/ 040 2246 1177 1179 2239 6,841 17- 27/ 050 2264 1182 1179 2256 6,881 17- 4 3-913/ 055 2478 2140 2144 2468 9,230 19- 7 3-913/ 060 2557 2211 2212 2549 9,530 19- 7 3-913/ 070 2648 2330 2334 2638 9,950 21- 0 3-913/ 075 2955 2447 2445 2953 10,800 21- 71/ 090 3035 2471 2471 3033 11,010 21- 97/ 105 3342 2529 2529 3340 11,740 22- 6 3-913/

030 2000 1037 1038 1995 6,070 14- 81/ 035 2061 1038 1037 2059 6,195 14-10 3-913/ 040 2277 1210 1213 2270 6,970 17- 17/ 050 2301 1206 1205 2297 7,010 17- 3 3-913/ 055 2510 2168 2172 2500 9,350 19- 7 3-913/ 060 2587 2242 2237 2584 9,650 19- 7 3-913/ 070 2683 2361 2365 2672 10,080 21- 0 3-913/ 075 3015 2474 2472 3013 10,974 21- 89/ 090 3095 2499 2498 3092 11,184 21-107/ 105 3405 2554 2554 3401 11,914 22- 7 3-913/

030 2133 1089 1091 2127 6,441 16- 111/ 035 2198 1087 1087 2194 6,566 16- 37/ 040 2411 1262 1264 2404 7,341 18- 71/ 050 2434 1259 1256 2432 7,381 18- 85/ 055 2617 2251 2255 2607 9,730 20- 9 3-913/ 060 2698 2320 2325 2687 10,030 20- 9 3-913/

030 2188 1100 1101 2182 6,570 16- 23/ 035 2187 1163 1161 2184 6,695 18- 67/ 040 2454 1284 1287 2446 7,470 18- 71/ 050 2017 1740 1738 2014 7,510 20- 9 3-913/ 055 2649 2279 2283 2639 9,850 20- 9 3-913/ 060 3442 1787 1791 3431 10,450 16- 09/

TOTAL

(lb)

2 16

16 16

16 8 2 8

4 16 2

3-913/

3-913/ 3-913/

3-913/

3-913/ 3-913/

3-913/ 3-913/ 3-913/ 3-913/

3-913/ 3-913/ 3-913/

3-913/

16 16 16 16 16 16 16 16 16 16

16 16 16 16 16 16

WITH HIGH-CAPACITY POWER EXHAUST

UNITS 48ZT,ZW

VERTICAL SUPPLY AND RETURN/ LOW GAS HEAT, HIGH-CAPACITY POWER EXHAUST

VERTICAL SUPPLY AND RETURN/ HIGH GAS HEAT, HIGH-CAPACITY POWER EXHAUST

UNITS 48Z6,Z8

WITH RETURN/EXHAUST FAN

VERTICAL SUPPLY AND RETURN LOW GAS HEAT, RETURN/EXHAUST FAN

VERTICAL SUPPLY AND RETURN HIGH GAS HEAT, RETURN/EXHAUST FAN

Fig. 14 — Weight Distribution and Center of Gravity

SIZE

CORNER WEIGHTS (lb)

1 2 3 4 ft-in. ft-in.

TOTAL

(lb)

075 3551 3053 3049 3551 13,204 24- 9 090 3629 3080 3075 3630 13,414 24- 15/ 105 3948 3126 3121 3948 14,144 25- 91/

075 3611 3081 3076 3611 13,380 24-107/ 090 3691 3106 3102 3691 13,590 25- 03/ 105 4008 3155 3150 4008 14,320 25- 915/

SIZE

075 2802 3002 3008 2868 11,740 19-4 3-9 090 2940 3029 3035 2946 11,950 19-6 3-913/

CORNER WEIGHTS (lb)

1 2 3 4 ft-in. ft-in.

TOTAL

(lb)

105 3242 3091 3098 3249 12,680

075 2921 3029 3036 2928 11,914 19-6 3-913/ 090 2999 3056 3063 3006 12,124 19-7 3-913/ 105 3304 3116 3123 3311 12,854

8 8

8 4

3-913/

3-913/ 3-913/

3-913/ 3-913/ 3-913/

20-2

20-4

3-913/

16 16 16

Condensate Drain Connections — There are a to-

tal of five drain connections required on each unit: one primary drain (on right-hand side of the unit) and four secondary drains (two on each side of unit).

PRIMARY DRAIN — The primary drain is a 2-in. NPT pipe connection located on the right-hand side of the unit looking at the unit from the return air end. See Fig. 15-24.

With field-supplied fittings and pipe sections, plumb the primary condensate drain to the 2-in. FPT connector on the base rail. Use a trap height of at least 4-in. for size 030-070 units and 7-in. for size 075-105 units. See Fig. 24 and 25. Install with a height dimension of at least 2-in. from the top of the exit pipe from the trap section to the bottom of the connector. Apply a bead of RTV or similar sealant around the pipe joint at the connector in the base rail.

SECONDARY DRAINS (Units Installed on Curb) — There are two secondary drain connections on each side of the unit. See Fig. 26. There are secondary drains on each side of the unit in the filter section and one on each side of the unit in the supply fan section. There are labels marking each location on the unit base rail. See Fig. 15-23.

Locate the four 1 mounting screws (shipped in a bag taped to the basepan in the supply fan section, located behind the access panel marked FAN SECTION). The drain couplings are a 10-gage plate with

a 1

/4 in. half coupling welded to the plate.

At each secondary drain hole location, there is a 1 hole pre-drilled in the bottom of the base rail, surrounded by four 0.20-in. engagement holes. Install a drain coupling assembly using screws provided at each secondary drain hole location. See Fig. 27. Do not attach any drain coupling assemblies in the condenser section base rail.

Using field-supplied fittings and pipe sections, assemble Utraps at each secondary drain fitting. See Fig. 28. Provide a minimum size of ½-in. pipe for secondary drains. Use a trap at least 4-in. deep for size 030-070 units and 7-in. deep for size 075-105 units. Apply a bead of RTV or similar sealant around the drain assemblies.

Consult local plumbing codes for direction on joining multiple drain lines. Total size of any combined line does not need to exceed nominal 2-in. size of primary drain connection.

/4-in. drain coupling assemblies and

/8-in.

Fill the U-traps at the secondary drain locations prior to unit start-up. Also check the U-traps before each cooling season to ensure the traps are filled and functioning properly.

SECONDARY DRAINS (Units Installed on Steel Beam or Slab) — There are two secondary drain connections required on each side of the unit. See Fig. 26. There are secondary drains on each side of the unit in the filter section and one on each side of the unit in the supply fan section. There are labels marking each location on the unit base rail. See Fig. 15-23. Prior to final positioning of the unit, apply a bead of RTV or similar sealant around each secondary drain hole in the bottom of the unit base rail. Then position the unit into final location.

Locate the four 1

/4-in. drain coupling assemblies and mounting screws (shipped in a bag taped to the basepan in the supply fan section, located behind the access panel marked FAN SECTION). The drain couplings are a 10-gage plate with

a 1

/4 in. half coupling welded to the plate.

After final positioning of the unit, perform the following

procedure:

1. At each of the four secondary drain locations (marked with labels on the unit base rail), position the drain coupling assembly in the side of the base rail. Mark the screw holes and the drain hole locations on the base rail.

2. Drill holes for drain outlet (use 1 the mounting screws (use

/8-in. hole saw) and for

/16-in. drill bit).

3. Install a drain coupling assembly using screws provided at each secondary drain hole location.

4. Using field-supplied fittings and pipe sections, assemble U-traps at each secondary drain fitting. See Fig. 28. Provide minimum size of ½-in. pipe for secondary drains. Use a trap at least 4-in. deep for size 030-070 units and 7-in. deep for size 075-105 units.

5. Apply a bead of RTV or similar sealant around the drain assemblies.

Consult local plumbing codes for direction on joining multiple drain lines. Total size of any combined line does not need to exceed nominal 2-in. size of primary drain connection.

Fill the U-traps at the secondary drain locations prior to unit start-up. Also check the U-traps before each cooling season to ensure the traps are filled and functioning properly.

→

Fig. 15 — Base Unit Dimensional Drawing — 48ZG,ZN030,035 (Standard Chassis)

Fig. 16 — Base Unit Dimensional Drawing — 48ZG,ZN040,050 (Standard Chassis)

Fig. 17 — Base Unit Dimensional Drawing — 48ZG,ZN055-070 (Standard Chassis)

a48-8451

Fig. 18 — Base Unit Dimensional Drawing — 48ZG,ZN075-105 (Standard Chassis)

Fig. 19 — Base Unit Dimensional Drawing — 48ZG,ZN030,035 (Extended Chassis)

Fig. 20 — Base Unit Dimensional Drawing — 48ZG,ZN040,050 (Extended Chassis)

a48-8452

Fig. 21 — Base Unit Dimensional Drawing — 48ZG,ZN055,060 (Extended Chassis)

a48-8453

4.65]

[10

[352]

1'-1 3/4"

POWER

[1933]

6'-4 1/8"

Fig. 22 — Base Unit Dimensional Drawing — 48ZT,ZW075-105 (Units with High-Capacity Power Exhaust)

CONTROL

[22.35] 0'-0 7/8" D LOW VOLTAGE

a48-8454

Fig. 23 — Base Unit Dimensional Drawing — 48Z6,Z8075-105 (Units with Return/Exhaust Fan)

Fig. 24 — Primary Drain Connection

A = 4-in. (102 mm) min — Sizes 030-070 7-in. (178 mm) min — Sizes 075-105

Fig. 25 — Slab-Mounted Condensate

Drain Piping Details

Fig. 26 — Secondary Condensate Drain Location

Fig. 27 — Secondary Drain Seal Plate Location

A = 4-in. (102 mm) min — sizes 030-070 7-in. (178 mm) min — sizes 075-105

Fig. 28 — Curb-Mounted Condensate

Drain Pipe Details

Install Outdoor Hoods (48ZG,ZN,Z6,Z8 Units)

UNIT SIZES 030-050 25% Outdoor-Air Hoods (Units without Economizer

Option) (Fig. 29)

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

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

3. Pivot hoods outward (2 hoods).

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

5. Apply a bead of RTV or similar sealant to corner of each hood at pivot point to prevent water leaks. See Fig. 30.

Economizer Hoods (Units with Economizer Option) (Fig. 31 and 32)

1. Remove the 4 screws holding each of the 2 economizer side hoods in place.

2. Pivot hoods outwards (2 hoods).

3. Apply seal strip to vertical flange of hood sides.

4. Install hood sides of hood top using 19 screws (7 each side, 5 top). Screws are in fastener package located with the hood sides and seal strip which is taped inside the unit.

5. Apply a bead of RTV or similar sealant to corners of economizer hoods to prevent water leaks.

UNIT SIZES 055-105 25% Outdoor-Air Hoods (Fig. 33)

are factory installed on the 055-105 units. Economizer Hoods (Units with Economizer Option) (Fig. 34-36)

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

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

3. Pivot hoods outward (4 hoods).

4. Apply seal strip to vertical flange of hood sides.

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. 30.)

— The outdoor-air hoods

OUTDOOR AIR HOOD

OUTDOOR AIR HOODS (FIXED)

Fig. 29 — Outdoor Air Hood Installation

(Sizes 030-050)

OUTDOOR-AIR HOOD

RTV (ALL HOODS)

Fig. 30 — Outdoor-Air and Economizer Hood

SIDE HOOD (ROTATE OPEN)

Fig. 33 — 25% Outdoor-Air Hood Location

SIDE HOODS (ROTATE OPEN)

END HOODS

4”

(FIXED)

SIDE HOODS (ROTATE OPEN)

Fig. 34 — Economizer Outdoor-Air Hood

Installation (Sizes 055-105)

SIDE HOODS (ROTATE OPEN)

SIDE HOOD (ROTATE

END HOOD (FIXED)

OPEN)

Fig. 31 — Economizer Outdoor-Air Hood

Installation (Sizes 030-050)

SIDE HOOD (ROTATE OPEN)

END HOOD (FIXED)

SIDE HOOD (ROTATE OPEN)

POWER EXHAUST (FIXED)

Fig. 32 — Economizer with Power Exhaust

Outdoor-Air Hood Installation (Sizes 030-050)

END HOODS (FIXED)

POWER EXHAUST (FIXED)

SIDE HOODS (ROTATE OPEN)

Fig. 35 — Economizer with Power Exhaust

Outdoor-Air Hood Installation (Sizes 055-105)

SIDE HOODS (ROTATE OPEN)

END HOODS (FIXED)

RETURN/ EXHAUST (FIXED)

SIDE HOODS (ROTATE OPEN)

Fig. 36 — Economizer with Return/Exhaust

Fan Outdoor-Air Hood Installation

(48Z6,Z8075-105 Units)

Install Economizer Hoods (48ZT,ZW Units) —

The economizer uses a total of 4 outdoor intake hoods, 2 on each side of the unit. See Fig. 37. Two small hoods (one per side) are factory-installed and are pivoted inside the unit chassis for shipment. Two large hoods are shipped in packages located inside the unit. The large hoods (1 on each side) require field assembly and mounting.

INSTALL SMALL HOODS — To install the small economizer hoods, perform the following procedure:

1. Remove the 10 screws holding each of the small economizer hood shipping covers in place.

2. Pivot hoods outward. (There are a total of 2 hoods.)

3. Apply seal strip to vertical flange of hood sides.

4. Install 15 screws (4 each side, 7 across top) around the outside of each hood. Screws are in the fastener package taped to the basepan inside the fan section.

5. Apply a bead of RTV or similar sealant to corner of economizer hood at pivot point to prevent water leaks. (See Fig. 30.)

INSTALL LARGE HOODS — Large hoods are shipped disassembled in the economizer section of the unit behind the large economizer hood shipping cover. See Fig. 38 for assembly details for large economizer hoods. To install the large economizer hoods, perform the following procedure:

1. Remove the 17 screws holding each of the large economizer hood shipping covers in place.

2. Remove the packages containing the disassembled large economizer hoods (total of 2 packages). Each package

contains the following: left hood side, right hood side, hood top, hood front, top filter flange, side filter flanges (4), bottom support, front support, filters (6), filter clips (9), seal strip, fasteners.

3. Place seal strip on backside of bottom support along entire length of support, covering 6 clearance holes.

4. Attach bottom support piece to unit. Be sure seal strip is between bottom support and panel on unit.

5. Place seal strip on

/4-in. flange on both the left and right

hood side.

6. Attach the side filter flanges to the left and right hood sides, 2 on each hood side.

7. Attach left and right hood sides to unit. Be sure seal strip is between hood side and unit.

8. Place seal strip on

/4-in. flange on hood top.

9. Attach top filter flange to hood top.

10. Attach top hood to unit and to hood sides. Be sure seal strip is between hood top and unit.

11. Attach front support between left and right hood sides.

12. Place seal strip on all filter flanges.

13. Attach filter clips to front and bottom supports.

14. Install filters and filter clips. Filters are held in place with filter clips.

15. Attach hood front to hood top and sides.

16. Apply RTV or similar sealant to 6 places shown in Fig. 38.

EXHAUST AIR

PE VFD

POWER EXHAUST ACCESS DOOR

AUXILIARY CONTROL BOX

LARGE ECONOMIZER HOOD LOCATION

ACCESS DOOR

LEGEND

PE VFD — Power Exhaust Variable Frequency Drive

Fig. 37 — Economizer Hood Location — 48ZT,ZW Units

SMALL ECONOMIZER HOOD LOCATION

DETAIL Z SCALE 3:4

SEE DETAIL Z

AND BOTH ENDS OF BOTTOM FILTER ROW

APPLY RTV IN THE INDICATED AREAS

Fig. 38 — Large Economizer Hood Assembly

Field Wire Routing

UNIT SIZES 030-050 — 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 coupling for 24 v control wiring are provided in the basepan. There are two 4 power wiring.

wiring out through one of the 4 supplied disconnect and then back into the unit through the other knockout. See Fig. 39 for recommended disconnect location.

wiring from field-supplied disconnect through top 4 knockouts into unit.

unit, a next to the control box.

UNIT SIZES 055-105 — Field wiring is brought into the unit through the bottom of the control box. Wiring can be brought through the roof curb through field-supplied watertight connections. See Fig. 40 and 41.

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.

/2-in. NPT coupling for field power and a 3/4-in. NPT

/8-in. knockouts in the corner post for field

If field power wiring is brought through the roof curb, route

If power wiring is brought through the side of the unit, route

If control wiring is to be brought in through the side of the

/8-in. diameter hole must be drilled in the corner post

A 4

/32-in. hole for field power wiring and a 7/8-in. hole for

/8-in. knockouts to the field-

/8-in.

See Fig. 40 and 41 for recommended disconnect location.

Field Electrical Connections

IMPORTANT: The 48ZN,ZW,Z8 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 defined 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.

POWER WIRING — 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 varies according to disconnect size.

Units Without Factory-Installed Disconnect ing units, provide a disconnect per NEC (National Electrical Code) of adequate size (MOCP [Maximum Overcurrent Protection] of unit is on the informative plate). All field wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 42 for power wiring connections to the unit power terminal block and equipment ground. Maximum wire size is two (2) 500 MCM (thousand circular mils) conductors per pole.

— When install-

Units with Factory-Installed Disconnect

— The factoryinstalled disconnect is an interlocking, door-type. The disconnect handle locks the door when it is in the ON position. The disconnect handle must be in the OFF position to open the control box door. The disconnect is located in a separate control box behind the control box door for all units. See Fig. 43.

All field wiring must comply with NEC and all local codes. Wire must be sized based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 44 for power wiring connections to the unit disconnect and equipment ground.

DISCONNECT SIZE

200 Amps 400 Amps 600 Amps

Operating Voltage

— Operating voltage to the compressor

QUANTITY...MAXIMUM WIRE SIZE

(MCM)

1...300

1...600

2...600

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 7-16 for unit electrical data.

Use the following formula to determine the percentage of voltage imbalance.

Voltage Imbalance

= 100 x

max voltage deviation from average voltage

average voltage

Example: Supply voltage is 460-3-60.

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

Average Voltage =

455 + 464 + 455

1371

= 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

457

= 1.53%

This amount of phase imbalance is satisfactory as it is be-

low 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.

CAUTION

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

Fig. 39 — Disconnect Location — Size 030-050 Units

CAUTION

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

Fig. 40 — Disconnect Location — 48ZG,ZN055-105 and 48Z6,Z8075-105 Units

CAUTION

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

Fig. 41 — Disconnect Location — 48ZT,ZW075-105 Units

TB1

EQUIP GND

FACTORY WIRE

22 21

DISCONNECT PER NEC

DISCONNECT

PER NEC

EQUIP

GND

LEGEND

EQUIP — Equipment GND — Ground NEC — National Electrical Code TB — Terminal Block

Fig. 42 — Field Power Wiring Connections

13 12 11

FIELD WIRE

LEGEND

EQUIP — Equipment GND — Ground NEC — National Electrical

Code

Fig. 44 — Field Power Wiring Connections

for Factory-Installed Disconnect

Fig. 43 — Factory-Installed Disconnect Location

Table 7 — Electrical Data, 48ZG,ZN030 Units

NOMINAL VO LTAGE

(3 Ph 60 Hz)

VO LTAGE

RANGE

COMPRESSOR

No. 1 No. 2

RLA LRA RLA LRA Qty

OFM IFM

Tot al

Hp FLA

FLA

/224.2/22.0

10 30.8/28.0

6.6

208/230 187-254 53.2 266 53.2 266 2

(ea)

15 46.2/42.0

20 59.4/54.0

25 74.8/68.0

11.0

10 14.0

460

414-508 28.8 120 28.8 120 2

3.3

(ea)

15 21.0

20 27.0

25 34.0

9.0

10 11.0

575

518-632 23.1 96 23.1 96 2

2.4

(ea)

15 17.0

20 22.0

25 27.0

LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motors rated at

FLA — Full Load Amps Hp — Nominal Horsepower IFM — Indoor (Supply) Fan Motor LRA — Locked Rotor Amps MCA — Minimum Circuit Amps (for wire sizing) MOCP — Maximum Overcurrent Protection OFM — Outdoor (Condenser) Fan Motor RLA — Rated Load Amps

0.3 FLA each.

EXHAUST

FAN

Tot al

— —/— 157.1/154.9 200/200

6 21.2/19.2 178.3/174.1 225/225 10 33.4/30.4 190.5/185.3 225/225 15 48.4/44.0 205.5/198.9 250/250 20 61.6/56.0 220.8/211.6 250/250

— —/— 163.7/160.9 200/200

6 21.2/19.2 184.9/180.1 225/225 10 33.4/30.4 197.1/191.3 250/250 15 48.4/44.0 212.1/204.9 250/250 20 62.0/56.0 227.4/217.6 250/250

— —/— 179.1/174.9 225/225

6 21.2/19.2 184.9/180.1 250/225 10 33.4/30.4 197.1/191.3 250/250 15 48.4/44.0 212.1/204.9 250/250 20 62.0/56.0 227.4/217.6 300/250

— —/— 193.9/187.1 250/225

6 21.2/19.2 215.1/206.3 250/250 10 33.4/30.4 227.3/217.5 250/250 15 48.4/44.0 242.3/231.1 300/250 20 62.0/56.0 256.0/243.6 300/250

— —/— 213.1/204.6 250/225

6 21.2/19.2 234.3/223.8 300/250 10 33.4/30.4 246.5/248.6 300/300 15 48.4/44.0 261.5/248.6 300/300 20 62.0/56.0 274.7/260.6 300/300

— — 82.4 110

6 9.6 92.0 110 10 15.2 97.6 125 15 22.0 104.4 125 20 28.0 110.4 125

— — 85.4 110

6 9.6 95.0 110 10 15.2 100.6 125 15 22.0 107.4 125 20 28.0 113.4 125

— — 92.4 110

6 9.6 102.0 125 10 15.2 107.6 125 15 22.0 114.4 125 20 28.0 120.4 125

— — 98.4 125

6 9.6 108.0 125 10 15.2 113.6 125 15 22.0 120.4 125 20 28.0 126.4 150

— — 106.7 125

6 9.6 116.3 150 10 15.2 121.9 150 15 22.0 128.7 150 20 28.0 134.7 150

—— 65.8 80

6 7.8 73.6 90 10 12.2 78.0 100 15 18.0 83.8 100 20 22.0 87.8 110

—— 67.8 90

6 7.8 75.6 90 10 12.2 80.0 100 15 18.0 85.8 100 20 22.0 89.8 110

—— 73.8 90

6 7.8 81.6 100 10 12.2 86.0 100 15 18.0 91.8 110 20 22.0 95.8 110

— — 78.8 100

6 7.8 86.6 100 10 12.2 91.0 110 15 18.0 96.8 110 20 22.0 100.8 110

— — 84.8 110

6 7.8 92.6 110 10 12.2 97.0 110 15 18.0 102.8 125 20 22.0 106.8 125

Tot al

FLA

POWER SUPPLY

MCA MOCP

Table 8 — Electrical Data, 48ZG,ZN035 Units

NOMINAL VO LTAGE

(3 Ph 60 Hz)

VO LTAGE

RANGE

COMPRESSOR

No. 1 No. 2

RLA LRA RLA LRA Qty

OFM IFM

Tot al

Hp FLA

FLA

/224.2/22.0

10 30.8/28.0

6.6

208/230 187-254 53.2 266 69.2 345 2

(ea)

15 46.2/42.0

20 59.4/54.0

25 74.8/68.0

11.0

10 14.0

460

414-508 28.8 120 34.6 173 2

3.3

(ea)

15 21.0

20 27.0

25 34.0

9.0

10 11.0

575

518-632 23.1 96 26.7 120 2

2.4

(ea)

15 17.0

20 22.0

25 27.0

LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motors rated at

0.3 FLA each.

EXHAUST

FAN

Tot al

— —/— 177.1/174.9 225/225

10 33.4/30.4 210.5/205.3 250/250 15 48.4/44.0 225.5/218.9 250/250 20 61.6/56.0 238.7/230.9 300/300

— —/— 183.7/180.9 250/250

10 33.4/30.4 217.1/211.3 250/250 15 48.4/44.0 232.1/224.9 300/250 20 62.0/56.0 245.3/236.9 300/300

— —/— 199.1/194.9 250/250

10 33.4/30.4 232.5/225.3 300/250 15 48.4/44.0 247.5/238.9 300/300 20 62.0/56.0 260.7/250.9 300/300

— —/— 212.3/206.9 250/250

10 33.4/30.4 245.7/237.3 300/300 15 48.4/44.0 260.7/250.9 300/300 20 62.0/56.0 273.9/262.9 300/300

— —/— 229.1/220.9 300/250

10 33.4/30.4 262.5/251.3 300/300 15 48.4/44.0 277.5/264.9 350/300 20 62.0/56.0 290.7/276.9 350/300

— — 89.7 110

10 15.2 104.9 125 15 22.0 111.7 125 20 28.0 117.7 150

— — 92.7 125

10 15.2 107.9 125 15 22.0 114.7 125 20 28.0 120.7 150

— — 99.7 125

10 15.2 114.9 125 15 22.0 121.7 150 20 28.0 127.7 150

— — 105.7 125

10 15.2 120.9 150 15 22.0 127.7 150 20 28.0 133.7 150

— — 112.7 125

10 15.2 127.9 150 15 22.0 134.7 150 20 28.0 140.7 175

—— 70.3 90

10 12.2 82.5 100 15 18.0 88.3 110 20 22.0 92.3 110

—— 72.3 90

10 12.2 84.5 110 15 18.0 90.3 110 20 22.0 94.3 110

— — 78.3 100

10 12.2 90.5 110 15 18.0 96.3 110 20 22.0 100.3 125

— — 83.3 100

10 12.2 95.5 110 15 18.0 101.3 125 20 22.0 105.3 125

— — 88.4 110

10 12.2 100.6 125 15 18.0 106.4 125 20 22.0 110.4 125

Tot al

FLA

6 21.2/19.2 198.3/194.1 250/250

6 21.2/19.2 204.9/200.1 250/250

6 21.2/19.2 220.3/214.1 250/250

6 21.2/19.2 233.5/226.1 300/250

6 21.2/19.2 250.3/240.1 300/300

6 9.6 99.3 125

6 9.6 102.3 125

6 9.6 109.3 125

6 9.6 115.3 125

6 9.6 122.3 150

6 7.8 78.1 100

6 7.8 80.1 100

6 7.8 86.1 110

6 7.8 91.1 110

6 7.8 96.2 110

POWER SUPPLY

MCA MOCP

Table 9 — Electrical Data, 48ZG,ZN040 Units

NOMINAL VO LTAGE

(3 Ph 60 Hz)

VO LTAGE

RANGE

COMPRESSOR

No. 1 No. 2

RLA LRA RLA LRA Qty

OFM IFM

Tot al

Hp FLA

FLA

/224.2/22.0

10 30.8/28.0

6.6

208/230 187-254 69.2 345 69.2 345 3

(ea)

15 46.2/42.0

20 59.4/54.0

25 74.8/68.0

11.0

10 14.0

15 21.0

460

414-508 34.6 173 34.6 173 3

3.3

(ea)

20 27.0

25 34.0

30 40.0

9.0

10 11.0

575

518-632 26.7 120 26.7 120 3

2.4

(ea)

15 17.0

20 22.0

25 27.0

LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motors rated at

0.3 FLA each.

EXHAUST

FAN

Tot al

— —/— 199.7/197.5 250/250

6 21.2/19.2 220.9/216.7 250/250 10 33.4/30.4 233.1/227.9 300/250 15 48.4/44.0 248.1/241.5 300/300 20 61.6/56.0 261.3/253.5 300/300

— —/— 206.3/203.5 250/250

6 21.2/19.2 227.5/222.7 250/250 10 33.4/30.4 239.7/233.9 300/300 15 48.4/44.0 254.7/247.5 300/300 20 62.0/56.0 267.9/259.5 300/300

— —/— 221.7/217.5 250/250

6 21.2/19.2 242.9/236.7 300/300 10 33.4/30.4 255.1/247.9 300/300 15 48.4/44.0 270.1/261.5 300/300 20 62.0/56.0 283.3/273.5 350/300

— —/— 234.9/229.5 300/250

6 21.2/19.2 256.1/248.7 300/300 10 33.4/30.4 268.3/259.9 300/300 15 48.4/44.0 283.3/273.5 350/300 20 62.0/56.0 296.5/285.5 350/350

— —/— 251.7/243.5 300/300

6 21.2/19.2 272.9/262.7 300/300 10 33.4/30.4 285.1/273.9 350/300 15 48.4/44.0 300.1/287.5 350/350 20 62.0/56.0 313.3/299.5 350/350

— — 98.8 125

6 9.6 108.4 125 10 15.2 114.0 125 15 22.0 120.8 150 20 28.0 126.8 150

— — 101.8 125

6 9.6 111.4 125 10 15.2 117.0 150 15 22.0 123.8 150 20 28.0 129.8 150

— — 108.8 125

6 9.6 118.4 150 10 15.2 124.0 150 15 22.0 130.8 150 20 28.0 136.8 150

— — 114.8 125

6 9.6 124.4 150 10 15.2 130.0 150 15 22.0 138.8 150 20 28.0 142.8 175

— — 121.8 150

6 9.6 131.4 150 10 15.2 137.0 150 15 22.0 143.8 175 20 28.0 149.8 175

— — 129.1 150

6 9.6 138.7 175 10 15.2 144.3 175 15 22.0 151.1 175 20 28.0 157.1 175

— — 76.3 100

6 7.8 84.1 110 10 12.2 88.5 100 15 18.0 94.3 110 20 22.0 98.3 110

— — 78.3 100

6 7.8 86.1 110 10 12.2 90.5 110 15 18.0 96.3 110 20 22.0 100.3 125

— — 84.3 110

6 7.8 92.1 110 10 12.2 96.5 110 15 18.0 102.3 125 20 22.0 106.3 125

— — 89.3 110

6 7.8 97.1 110 10 12.2 101.5 125 15 18.0 107.3 125 20 22.0 101.3 125

— — 94.4 110

6 7.8 102.2 125 10 12.2 106.6 125 15 18.0 112.4 125 20 22.0 116.4 125

Tot al

FLA

POWER SUPPLY

MCA MOCP

Table 10 — Electrical Data, 48ZG,ZN050 Units

NOMINAL VO LTAGE

(3 Ph 60 Hz)

VO LTAGE

RANGE

COMPRESSOR

No. 1 No. 2

RLA LRA RLA LRA Qty

OFM IFM

Tot al

Hp FLA

FLA

/224.2/22.0

10 30.8/28.0

6.6

208/230 187-254 89.7 446 69.2 345 3

(ea)

15 46.2/42.0

20 59.4/54.0

25 74.8/68.0

11.0

10 14.0

15 21.0

460

414-508 43.6 223 34.6 173 3

3.3

(ea)

20 27.0

25 34.0

30 40.0

9.0

10 11.0

575

518-632 36.5 164 26.7 120 3

2.4

(ea)

15 17.0

20 22.0

25 27.0

LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motors rated at

0.3 FLA each.

EXHAUST

FAN

Tot al

— —/— 225.3/223.1 300/300

10 33.4/30.4 258.7/253.5 300/300 15 48.4/44.0 273.7/267.1 350/350 20 61.6/56.0 286.9/279.1 350/350

— —/— 231.9/229.1 300/300

10 33.4/30.4 265.3/259.5 350/300 15 48.4/44.0 280.3/273.1 350/350 20 62.0/56.0 293.5/285.1 350/350

— —/— 247.3/243.1 300/300

10 33.4/30.4 280.7/273.5 350/350 15 48.4/44.0 295.7/287.1 350/350 20 62.0/56.0 308.9/299.1 350/350

— —/— 260.5/255.1 350/300

10 33.4/30.4 293.9/285.5 350/350 15 48.4/44.0 308.9/299.1 350/350 20 62.0/56.0 322.1/311.1 400/400

— —/— 275.9/269.1 350/350

10 33.4/30.4 309.3/299.5 350/350 15 48.4/44.0 324.3/313.1 400/400 20 62.0/56.0 337.5/325.1 400/400

— — 110.0 150

10 15.2 125.2 150 15 22.0 132.0 175 20 28.0 138.0 175

— — 113.0 150

10 15.2 128.2 150 15 22.0 135.0 175 20 28.0 141.0 175

— — 120.0 150

10 15.2 135.2 175 15 22.0 142.0 175 20 28.0 148.0 175

— — 126.0 150

10 15.2 141.2 175 15 22.0 148.0 175 20 28.0 154.0 175

— — 133.0 175

10 15.2 148.2 175 15 22.0 155.0 175 20 28.0 161.0 200

— — 139.0 175

10 15.2 154.2 175 15 22.0 161.0 200 20 28.0 167.0 200

— — 88.5 125

10 12.2 100.7 125 15 18.0 106.5 125 20 22.0 110.5 125

— — 90.5 125

10 12.2 102.7 125 15 18.0 108.5 125 20 22.0 112.5 125

— — 96.5 125

10 12.2 108.7 125 15 18.0 114.5 150 20 22.0 118.5 150

— — 101.5 125

10 12.2 113.7 150 15 18.0 119.5 150 20 22.0 123.5 150

— — 106.5 125

10 12.2 118.7 150 15 18.0 124.5 150 20 22.0 128.5 150

Tot al

FLA

6 21.2/19.2 246.5/242.3 300/300

6 21.2/19.2 253.1/248.3 300/300

6 21.2/19.2 268.5/262.3 350/350

6 21.2/19.2 281.7/274.3 350/350

6 21.2/19.2 297.1/288.3 350/350

6 9.6 119.6 150

6 9.6 122.6 150

6 9.6 129.6 150

6 9.6 135.6 175

6 9.6 142.6 175

6 9.6 148.6 175

6 7.8 96.3 125

6 7.8 98.3 125

6 7.8 104.3 125

6 7.8 109.3 125

6 7.8 114.3 150

POWER SUPPLY

MCA MOCP

Table 11 — Electrical Data, 48ZG,ZN055 Units

NOMINAL VO LTAGE

(3 Ph 60 Hz)

208/230 187-254 108 506 74.4 345 26.4

460 414-508 50.6 253 34.6 173 13.2

575 518-632 39.1 176 28.8 120 9.6

LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan

VO LTAGE

RANGE

COMPR

NO. 1

RLA LRA RLA LRA

COMPR

NO. 2

OFM IFM

Tot al

Hp FLA MCA MOCP

FLA

15 46.2/42 281.6/277.4 350/350

20 59.4/54 294.8/289.4 400/350

25 74.8/68 310.2/303.4 400/400

30 88.0/80 323.4/315.4 400/400

40 114.4/104 351.5/339.4 450/400

15 21.0 132.1 175

20 27.0 138.1 175

25 34.0 145.1 175

30 40.0 151.1 200

40 52.0 163.4 200

15 17.0 104.3 125

20 22.0 109.3 125

25 27.0 114.3 150

30 32.0 119.3 150

40 41.0 128.8 150

motors rated at 0.3 FLA each.

BASE UNIT

ONLY

EXHAUST

FAN

Tota lHpTot al

FLA

10 34/30 315.0/307.4 400/400 15 48/44 330.0/321.4 400/400 20 62/56 343.2/333.4 450/400

10 34/30 328.2/319.4 400/400 15 48/44 343.2/333.4 450/400 20 62/56 356.4/345.4 450/450

10 34/30 343.6/333.4 450/400 15 48/44 358.6/347.4 450/450 20 62/56 371.8/359.4 450/450

10 34/30 356.8/345.4 450/450 15 48/44 371.8/359.4 450/450 20 62/56 385.0/371.4 450/450

10 34/30 384.9/369.8 450/450 15 48/44 399.9/383.4 500/450 20 62/56 412.6/395.4 500/500

10 15.2 147.3 175 15 22.0 154.1 200 20 28.0 160.1 200

10 15.2 153.3 200 15 22.0 160.1 200 20 28.0 166.1 200

10 15.2 160.3 200 15 22.0 167.1 200 20 28.0 173.1 200

10 15.2 166.3 200 15 22.0 173.1 200 20 28.0 179.1 225

10 15.2 178.6 225 15 22.0 185.4 225 20 28.0 191.4 225

10 12.2 116.5 150 15 18.0 122.3 150 20 22.0 126.3 150

10 12.2 121.5 150 15 18.0 127.3 150 20 22.0 131.3 150

10 12.2 126.5 150 15 18.0 132.3 150 20 22.0 136.3 175

10 12.2 131.5 150 15 18.0 137.3 175 20 22.0 141.3 175

10 12.2 141.0 175 15 18.0 146.8 175 20 22.0 150.8 175

BASE UNIT WITH

EXHAUST FAN

MCA MOCP

Table 12 — Electrical Data, 48ZG,ZN060 Units

NOMINAL VO LTAGE

(3 Ph 60 Hz)

208/230 187-254 108 506 108 506 26.4

460 414-508 50.6 253 50.6 253 13.2

575 518-632 39.1 176 39.1 176 9.6

LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan

VO LTAGE

RANGE

COMPR

NO. 1

RLA LRA RLA LRA

COMPR

NO. 2

OFM IFM

Tot al

Hp FLA MCA MOCP

FLA

15 46.2/42 314.9/310.7 400/400

20 59.4/54 328.1/322.7 400/400

25 74.8/68 343.5/336.7 450/400

30 88.0/80 356.7/348.7 450/450

40 114.4/104 384.8/372.7 450/450

15 21.0 148.1 175

20 27.0 154.1 200

25 34.0 161.1 200

30 40.0 167.1 200

40 52.0 179.4 225

15 17.0 114.6 150

20 22.0 119.6 150

25 27.0 124.6 150

30 32.0 129.6 150

40 41.0 139.6 175

motors rated at 0.3 FLA each.

BASE UNIT

ONLY

EXHAUST

FAN

Tota lHpTot al

FLA

10 34/30 348.3/340.7 450/400 15 48/44 363.3/354.7 450/450 20 62/56 376.6/366.7 450/450

10 34/30 361.5/352.7 450/450 15 48/44 376.5/366.7 450/450 20 62/56 389.7/378.7 450/450

10 34/30 376.9/366.7 450/450 15 48/44 391.9/380.7 450/450 20 62/56 405.1/392.7 500/500

10 34/30 390.1/378.7 450/450 15 48/44 405.1/392.7 500/500 20 62/56 418.3/404.7 500/500

10 34/30 418.2/403.1 500/500 15 48/44 433.2/416.7 500/500 20 62/56 445.9/428.7 500/500

10 15.2 163.3 200 15 22.0 170.1 200 20 28.0 176.1 200

10 15.2 169.3 200 15 22.0 176.1 225 20 28.0 182.1 225

10 15.2 176.3 225 15 22.0 183.1 225 20 28.0 189.1 225

10 15.2 182.3 225 15 22.0 189.1 225 20 28.0 195.1 225

10 15.2 194.6 225 15 22.0 201.4 250 20 28.0 207.4 250

10 12.2 126.8 150 15 18.0 132.6 150 20 22.0 136.6 175

10 12.2 131.8 150 15 18.0 137.6 175 20 22.0 141.6 175

10 12.2 136.8 175 15 18.0 142.6 175 20 22.0 146.6 175

10 12.2 141.8 175 15 18.0 147.6 175 20 22.0 151.6 175

10 12.2 151.3 175 15 18.0 157.1 175 20 22.0 161.1 200

BASE UNIT WITH

EXHAUST FAN

MCA MOCP

Table 13 — Electrical Data, 48ZG,ZN070 Units

NOMINAL

VOLTAGE

(3 Ph 60 Hz)

208/230 187-254 108 506 142 690 33.0

460 414-508 50.6 253 65.4 345 16.5

575 518-632 39.1 176 52.6 276 12.0

LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan

VOLTAGE

RANGE

COMPR

NO. 1

RLA LRA RLA LRA

COMPR

NO. 2

OFM IFM

Tot al

Hp FLA MCA MOCP

FLA

15 46.2/42 364.8/360.6 500/500

20 59.4/54 378.0/372.6 500/500

25 74.8/68 393.4/386.6 500/500

30 88.0/80 406.6/389.6 500/500

40 114.4/104.0 433.0/422.6 500/500

15 21.0 169.9 225

20 27.0 175.9 225

25 34.0 182.9 225

30 40.0 188.9 250

40 52.0 200.9 250

15 17.0 133.9 175

20 22.0 138.9 175

25 27.0 143.9 175

30 32.0 148.9 200

40 41.0 157.9 200

motors rated at 0.3 FLA each.

BASE UNIT

ONLY

EXHAUST

FAN

Tot alHpTot al

FLA

10 34/30 398.2/390.6 500/500 15 48/44 413.2/404.6 500/500 20 62/56 426.4/416.6 500/500

10 34/30 411.4/402.6 500/500 15 48/44 426.4/416.6 500/500 20 62/56 439.6/428.6 500/500

10 34/30 426.8/416.6 500/500 15 48/44 441.8/430.6 500/500 20 62/56 455.0/442.6 500/500

10 34/30 440.0/428.6 500/500 15 48/44 455.0/442.6 500/500 20 62/56 468.2/454.6 600/500

10 34/30 466.4/453.0 600/500 15 48/44 481.4/466.6 600/600 20 62/56 494.1/478.6 600/600

10 15.2 185.1 250 15 22.0 191.9 250 20 28.0 197.9 250

10 15.2 191.1 250 15 22.0 197.9 250 20 28.0 203.9 250

10 15.2 198.1 250 15 22.0 204.9 250 20 28.0 210.9 275

10 15.2 204.1 250 15 22.0 210.9 275 20 28.0 216.9 275

10 15.2 216.1 250 15 22.0 222.9 250 20 28.0 228.9 250

10 12.2 146.1 175 15 18.0 151.9 200 20 22.0 155.9 200

10 12.2 151.1 200 15 18.0 156.9 200 20 22.0 160.9 200

10 12.2 156.1 200 15 18.0 161.9 200 20 22.0 165.9 200

10 12.2 161.1 200 15 18.0 166.9 200 20 22.0 170.9 200

10 12.2 170.1 200 15 18.0 175.9 225 20 22.0 179.9 225

BASE UNIT WITH

EXHAUST FAN

MCA MOCP

Table 14 — Electrical Data — 48ZG,ZN075-105 Units

NOMINAL

UNIT

VOLTAGE

SIZE

NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motors rated at 460 v, single-phase, 60 Hertz and 0.3 FLA each.

(3 Ph

60 Hz)

075 460 414-50850.625365.4345————16.5

090 460 414-50865.434565.4345————19.8

105 460 414-508 50.6 253 34.6 173 50.6 253 34.6 173 19.8

VOLTAGE

RANGE

LEGEND

Rated Load Amps

No. 1 No. 2 No. 3 No. 4

RLA LRA RLA LRA RLA LRA RLA LRA

COMPRESSOR

OFM IFM

Tot al

FLA

BASE

UNIT

ONLY

Hp FLA MCA MOCP

30 40.0 188.9 250

40 52.0 200.9 250

50 65.0 213.9 250

60 77.0 228.8 300

75 96.0 252.5 300

30 40.0 207.0 250

40 52.0 219.0 250

50 65.0 232.0 250

60 77.0 246.9 300

75 96.0 270.6 350

30 40.0 242.9 250

40 52.0 255.2 300

50 65.0 271.5 300

60 77.0 286.5 350

75 96.0 310.2 400

OPTIONAL

POWER

EXHAUST

FAN

Tot alHpTot al

10 15.2 204.1 250 15 22.0 210.9 250 20 28.0 216.9 250 10 15.2 216.1 250 15 22.0 222.9 250 20 28.0 228.9 250 10 15.2 229.1 250 15 22.0 235.9 300 20 28.0 241.9 300 10 15.2 244.0 300 15 22.0 250.8 300 20 28.0 256.8 300 10 15.2 267.7 300 15 22.0 274.5 350 20 28.0 280.5 350 10 15.2 222.2 350 15 22.0 229.0 250 20 28.0 235.0 300 10 15.2 234.2 250 15 22.0 241.0 300 20 28.0 247.0 300 10 15.2 247.2 300 15 22.0 254.0 300 20 28.0 260.0 300 10 15.2 262.1 300 15 22.0 268.9 300 20 28.0 274.9 300 10 15.2 285.8 350 15 22.0 292.6 350 20 28.0 298.6 350 10 15.2 258.1 300 15 22.0 264.9 300 20 28.0 270.9 300 10 15.2 270.4 300 15 22.0 277.2 300 20 28.0 283.2 300 10 15.2 286.7 350 15 22.0 293.5 350 20 28.0 299.5 350 10 15.2 301.7 350 15 22.0 308.5 350 20 28.0 314.5 350 10 15.2 325.4 400 15 22.0 332.2 400 20 28.0 338.2 400

FLA

BASE UNIT

WITH

EXHAUST

FAN

MCA MOCP

Table 15 — Electrical Data — 48Z6,Z8075-105 Units

VOLTAGE

UNIT

VO LTAGE

SIZE

(3 Ph, 60 Hz)

075 460 41450850.625365.4345———— 5

090 460 41450865.434565.4345———— 6

105 460 414 508 50.6 253 50.6 253 34.6 173 34.6 173 6

FLA — Full Load Amps Hp — Nominal Horsepower LRA — Locked Rotor Amps MCA — Minimum Circuit Amps (for wire sizing) MOCP — Maximum Overcurrent Protection RLA — Rated Load Amps

NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motors rated at 460 v, single-phase, 60 Hertz and 0.3 FLA each.

LEGEND

RANGE

Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty FLA Hp FLA Hp

No. 1 No. 2 No. 3 No.4

COMPRESSOR

CONDENSER

FAN MOTOR

3.3

(ea)

3.3

(ea)

3.3

(ea)

EVAPORATOR

FAN MOTO R

30 40.0

40 52.0

50 65.0

60 77.0

75 96.0

30 40.0

40 52.0

50 65.0

60 77.0

75 96.0

30 40.0

40 52.0

50 65.0

60 77.0

75 96.0

RETURN/ EXHAUST

FAN

FLA

(total)

20 27 215.9 250 25 34 222.9 250 30 40 228.9 250 40 52 240.9 300 20 27 227.9 250 25 34 234.9 300 30 40 240.9 300 40 52 252.9 300 20 27 240.9 300 25 34 247.9 300 30 40 253.9 300 40 52 265.9 300 20 27 255.8 300 25 34 262.8 300 30 40 268.8 300 40 52 280.8 350 20 27 279.5 350 25 34 286.5 350 30 40 292.5 350 40 52 304.5 400 20 27 234.0 250 25 34 241.0 300 30 40 247.0 300 40 52 259.0 300 20 27 246.0 300 25 34 253.0 300 30 40 259.0 300 40 52 271.0 300 20 27 259.0 300 25 34 266.0 300 30 40 272.0 300 40 52 284.0 300 20 27 273.9 350 25 34 280.9 350 30 40 286.9 350 40 52 298.9 350 20 27 297.6 350 25 34 304.6 400 30 40 310.6 400 40 52 322.6 400 20 27 269.9 300 25 34 276.9 300 30 40 282.9 300 40 52 294.9 300 20 27 282.2 300 25 34 289.2 300 30 40 295.2 300 40 52 307.2 350 20 27 298.5 350 25 34 305.5 350 30 40 311.5 350 40 52 323.5 350 20 27 313.5 350 25 34 320.5 350 30 40 326.5 400 40 52 338.5 400 20 27 337.2 400 25 34 344.2 400 30 40 350.2 400 40 52 362.2 450

POWER

SUPPLY

MCA MOCP

Table 16 — Electrical Data — 48ZT,ZW075-105 Units

VO LTAGE

UNIT

SIZE

075

090 460 414-50865.434565.4345————19.8

3 PH, 60 Hz

460 414-50850.625365.4345————16.5

575 518-63239.117652.6276————12.0

VO LTAGE

RANGE

No. 1No. 2No. 3No. 4

RLA LRA RLA LRA RLA LRA RLA LRA

COMPRESSOR

OFM IFM

Tot al

FLA

Hp FLA LRA

30 40.0 230

40 52.0 304

50 65.0 370

60 77.0 453

75 96.0 —

30 32.0 —

40 41.0 —

50 52.0 —

60 62.0 —

30 40.0 230

40 52.0 304

50 65.0 370

60 77.0 453

75 96.0 —

EXHAUST

FAN

Tot alHpTot al

FLA

20 28 216.9 250 30 42 230.9 250 40 54 242.9 300 50 68 256.9 300 60 80 268.9 300 20 28 228.9 250 30 42 242.9 300 40 54 254.9 300 50 68 268.9 300 60 80 280.9 300 20 28 241.9 300 30 42 255.9 300 40 54 267.9 300 50 68 281.9 300 60 80 293.9 350 20 28 256.8 300 30 42 270.8 300 40 54 282.8 350 50 68 296.8 350 60 80 308.8 350 20 28 280.5 350 30 42 294.5 350 40 54 306.5 400 50 68 320.5 400 60 80 332.5 400 20 22 170.9 200 30 34 182.9 225 40 44 192.9 225 50 54 202.9 250 60 64 212.9 250 20 22 179.9 225 30 34 191.9 225 40 44 201.9 250 50 54 211.9 250 60 64 221.9 250 20 22 190.9 225 30 34 202.9 250 40 44 212.9 250 50 54 222.9 250 60 64 232.9 250 20 22 203.2 250 30 34 215.2 250 40 44 225.2 250 50 54 235.2 250 60 64 245.2 300 20 28 235.0 300 30 42 249.0 300 40 54 261.0 300 50 68 275.0 300 60 80 287.0 350 20 28 247.0 300 30 42 261.0 300 40 54 273.0 300 50 68 287.0 350 60 80 299.0 350 20 28 260.0 300 30 42 274.0 300 40 54 286.0 350 50 68 300.0 350 60 80 312.0 350 20 28 274.9 350 30 42 288.9 350 40 54 300.9 350 50 68 314.9 350 60 80 326.9 400 20 28 298.6 350 30 42 312.6 400 40 54 324.6 400 50 68 338.6 400 60 80 350.6 400

BASE UNIT

WITH

EXHAUST FAN

MCA MOCP

Table 16 — Electrical Data — 48ZT,ZW075-105 Units (cont)

VO LTAGE

UNIT

SIZE

090 575 518-63252.627652.6276————14.4

105

FLA — Full Load Amps Hp — Nominal Horsepower IFM — Indoor (Evaporator) Fan Motor LRA — Locked Rotor Amps MCA — Minimum Circuit Amps (for wire sizing) MOCP — Maximum Overcurrent Protection OFM — Outdoor (Condenser) Fan Motor RLA — Rated Load Amps

3 PH, 60 Hz

460 414-508 50.6 253 34.6 173 50.6 253 34.6 173 19.8

575 518-632 39.1 176 26.7 120 39.1 176 26.7 120 14.4

VO LTAGE

RANGE

LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan

No. 1No. 2No. 3No. 4

RLA LRA RLA LRA RLA LRA RLA LRA

COMPRESSOR

motors rated at 460 v, single-phase, 60 Hertz and 0.3 FLA each.

OFM IFM

Tot al

FLA

Hp FLA LRA

30 32.0 —

40 41.0 —

50 52.0 —

60 62.0 —

30 40.0 230

40 52.0 304

50 65.0 370

60 77.0 453

75 96.0 —

30 32.0 —

40 41.0 —

50 52.0 —

60 62.0 —

EXHAUST

FAN

Tot alHpTot al

FLA

20 22 186.8 225 30 34 198.8 250 40 44 208.8 250 50 54 218.8 250 60 64 228.8 250 20 22 195.8 225 30 34 207.8 250 40 44 217.8 250 50 54 227.8 250 60 64 237.8 250 20 22 206.8 250 30 34 218.8 250 40 44 228.8 250 50 54 238.8 250 60 64 248.8 300 20 22 219.1 250 30 34 231.1 250 40 44 241.1 300 50 54 251.1 300 60 64 261.1 300 20 28 270.9 300 30 42 284.9 300 40 54 296.9 300 50 68 310.9 350 60 80 322.9 350 20 28 283.2 300 30 42 297.2 300 40 54 309.2 350 50 68 323.2 350 60 80 335.2 350 20 28 299.5 350 30 42 313.5 350 40 54 325.5 350 50 68 339.5 400 60 80 351.5 400 20 28 314.5 350 30 42 328.5 400 40 54 340.5 400 50 68 354.5 400 60 80 366.5 400 20 28 338.2 400 30 42 352.2 400 40 54 364.2 450 50 68 378.2 450 60 80 390.2 450 20 22 209.8 225 30 34 221.8 250 40 44 231.8 250 50 54 241.8 250 60 64 251.8 300 20 22 219.3 250 30 34 231.3 250 40 44 241.3 250 50 54 251.3 300 60 64 261.3 300 20 22 233.0 250 30 34 245.0 250 40 44 255.0 300 50 54 265.0 300 60 64 275.0 300 20 22 245.5 300 30 34 257.5 300 40 44 267.5 300 50 54 277.5 300 60 64 287.5 300

BASE UNIT

WITH

EXHAUST FAN

MCA MOCP

Air Pressure Tubing — Before options such as inlet

guide vanes (IGV), variable frequency drive (VFD), and/or modulating power exhaust can operate properly, the pneumatic tubing for pressure sensing must be installed. Use fire-retardant plenum tubing (field-supplied). All control devices use tubing. Tubing must be run from the appropriate sensing location (in the duct or in the building space) to the control device location in the unit.

INLET GUIDE VANES — The tubing for the duct pressure (DP) control option should sample supply duct pressure about

/3 of the way out from the unit in the main trunk duct, at a

location where a constant duct pressure is desired.

The duct pressure is sensed by a pressure transducer. The output of the pressure transducer is directed to the unit control module. On all sizes, the DP transducer is located in the unit auxiliary control box. See Fig. 45 and 46 for auxiliary control box location. See Fig. 47 and 48 for auxiliary control box details. Use a nominal

/4-in. plastic tubing.

VARIABLE FREQUENCY DRIVE — The tubing for the duct pressure (DP) control option should sample supply duct pressure about

/3 of the way out from the unit in the main trunk duct, at a location where a constant duct pressure is desired.

On these units, the duct pressure is sensed by a pressure transducer. The pressure transducer output is directed to the unit control module. On all sizes, the DP transducer is located in the unit auxiliary control box. See Fig. 45 and 46 for auxiliary control box location. See Fig. 47 and 48 for auxiliary control box details. Use a nominal

/4-in. plastic tubing.

/4-in.

Refer to appropriate base unit Controls and Troubleshooting book for instructions on adjusting set points for duct pressure controls.

MODULATING POWER EXHAUST — The tubing for the building pressure (BP) control (achieved via the modulating power exhaust option) should sample building pressure in the area near the entrance lobby (or other appropriate and sensitive location) so that location is controlled as closely to design pressures as possible.

These units use a pressure transducer for sensing building pressure. The BP transducer is located in the unit auxiliary control box. See Fig. 45 and 46 for auxiliary control box location. See Fig. 47 and 48 for auxiliary control box details. Use a nom-

inal

/4-in. plastic tubing.

For instructions on adjusting BP control set points, refer to the Controls and Troubleshooting book.

RETURN/EXHAUST POWER EXHAUST — The tubing for the building pressure (BP) control (achieved via the return/ exhaust power exhaust option) should sample building pressure in the area near the entrance lobby (or other appropriate and sensitive location) so that location is controlled as closely to design pressures as possible.

The units use a pressure transducer for sensing building pressure. The BP transducer is located in the unit auxiliary control box. See Fig. 46 for auxiliary control box location. Fig. 49 for auxiliary control box details. Use a nominal

/4-in. plastic

tubing.

For instructions on adjusting BP control set points, refer to the Controls and Troubleshooting book.

AUXILIARY CONTROL BOX

Fig. 45 — Auxiliary Control Box Location (Sizes 030-050)

AUXILIARY CONTROL BOX

Fig. 46 — Auxiliary Control Box Location (Sizes 055-105)

OACFM

TRANSDUCER

LEGEND

BP — Building Pressure Transducer DP — Duct Pressure Transducer FS — Filter Switch OACFM — Outdoor Air Cfm Sensor Transducer

Fig. 47 — Auxiliary Control Box Details

(Sizes 030-050)

OACFM

TRANSDUCER

LEGEND

BP — Building Pressure Transducer DP — Duct Pressure Transducer FS — Filter Switch OACFM — Outdoor Air Cfm Sensor Transducer

Fig. 48 — Auxiliary Control Box Details

(Sizes 055-105 without Return Fan)

OACFM

TRANSDUCER

CFM

PP SS

Fig. 50 — Shipping Brackets; Size 030-050 Units

P—Building Pressure

Transducer

P—Duct Pressure

Transducer

S—Filter Switch RFCFM — Return Fan Cfm Sensor Transducer

LEGEND

OACFM — Outdoor Air Cfm

PPSS — Plenum Pressure

Sensor Transducer

Safety Switch

Fig. 49 — Auxiliary Control Box Details

(Size 075-105 Units with Return Fan)

Supply-Fan Shipping Brackets — Supply-fan ship-

ping brackets (4 per unit) must be removed from each corner of the fan sled before starting unit.

UNIT SIZES 030-050

1. To remove brackets, raise fan sled by turning adjusting bolt counterclockwise until spring is compressed slightly.

2. Remove screws holding shipping bracket to unit cross rail.

3. Remove shipping bracket (top of bracket is slotted so that it will slide out).

4. After removing all shipping brackets, level fan sled using the adjusting screws. On all 4 corners, dimension from cross rail to fan sled should be as shown in Fig. 50.

UNIT SIZES 055-070 — To remove shipping brackets, remove the 6 screws holding each bracket to the cross rail. There are 8 brackets per unit. See Fig. 51.

After removing all shipping brackets, level fan sled using the adjusting screws. On all 4 corners dimension from cross rail to fan sled should be as shown in Fig. 51.

UNIT SIZES 075-105 — Supply-fan shipping brackets must be removed from each corner of the fan sled before starting unit. To remove shipping brackets, remove the 6 screws holding each bracket to the cross rail. There are 4 brackets per unit. See Fig. 52.

After removing all shipping brackets, level fan sled using the adjusting screws. On all 4 corners dimension from cross rail to fan sled should be as shown in Fig. 52.

Return/Exhaust-Fan Shipping Brackets (48Z6, Z8 Units) —

removed from each corner of the fan sled before starting unit.

To remove shipping brackets, remove 2 screws holding

each bracket to the cross rail. There are 4 brackets per unit.

After removing all shipping brackets, level the fan using the adjustment screws. On all 4 corners the dimension from cross rail to fan sled should be as shown in Fig. 53.

Fig. 51 — Shipping Brackets;

Size 055-070 Units

Return/exhaust fan shipping brackets must be

Fig. 52 — Shipping Brackets (Sizes 075-105)

Remove TXV Shipping Blocks — Shipping blocks

for the TXV bracket are used on size 030-075 units with high capacity coils and all 075-105 size units. Remove the foam shipping block before starting unit. See Fig. 54.

SHIPPING BLOCK

NOTE: All dimensions are in inches.

Fig. 53 — Return/Exhaust Fan Shipping Brackets

Fig. 54 — Foam TXV Shipping Blocks

Compressor Mounting

SIZES 030-090 — Each compressor is supported on 4 springs. The springs are compressed for shipment. After the unit is installed, the holddown nuts need to be loosened for normal operation. See Fig. 55 for compressor mounting details. Loosen each bolt using nut indicated until the flatwasher

(

/8-in.) can be moved with finger pressure. Do not remove the locknuts. Check each compressor mounting to ensure all 4 springs have been loosened properly.

SIZE 105 — Compressors are mounted on rails and held down by rail bolts during shipment. After unit is installed, loosen the rail bolts to allow the rails and compressors to float freely on the springs located under the rails. See Fig. 56 and 57.

Gas Piping — Unit is equipped for use with natural gas

only. Installation must conform with local building codes, or in the absence of local codes, with the National Fuel Gas Code (NFGC), ANSI Z223.1.

/8-in. NPT tapping plug, accessible for test gage connection, must be field installed immediately upstream of gas supply connection to unit, but after manual gas valve. See Fig. 58. Natural gas pressure at unit gas connection must not be less than 5 in. wg or greater than 13 in. wg.

Size gas supply piping for 0.5 in. wg maximum pressure

drop. Do not use supply pipe smaller than unit gas connection.

CAUTION

Fig. 56 — Front View of Compressor

Mounting Rail Assembly — Size 105 Units

Disconnect gas piping from unit 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.

Optional Staged Gas Control — The 48Z030-105

large rooftop units may be ordered with an optional factoryinstalled staged gas control system that monitors heating operation of the rooftop. The control system is composed of several components as listed in sections below. Table 17 shows 48Z Series staged gas implementation.

Refer to the Unit Controls and Troubleshooting book for in-

formation on configuring staged gas control.

COMPRESSOR MOUNTING FOOT

NUT

COMPRESSOR MOUNTING RAIL

Fig. 57 — Rear View of Compressor

Mounting Rail Assembly — Size 105 Units

NOTE: All dimensions are in inches (mm).

Fig. 55 — Compressor Mounting (Sizes 030-090)

*NPT plug is field supplied. NOTE: Follow all local codes.

Fig. 58 — Gas Piping Details

Installing Flue/Inlet Hoods — The flue and inlet

hoods are shipped in a package taped to the basepan in the fan section. The flue (outlet) hoods are pre-assembled. The flue deflector and inlet hoods require assembly.

The hoods are located on the heating section access panel as shown in Fig. 59 (sizes 030-050) or Fig. 60 (sizes 055-105). See Table 18 for a list of parts used to assemble each hood and quantities of each hood type used with each unit.

1. Remove shipping block-offs and shipping tape from all openings in the access panel.

2. Attach flue outlet hoods (see Fig. 61) to access panel using screws provided. Hoods are placed over each combustion outlet.

3. Install flue deflector baffle inside flue deflector hood. See Fig 62 for sizes 030-050 and 075-105 (V-type deflector). See Fig. 63 for sizes 055-105 (curve-type deflector). Install flue deflector hood assembly over each flue outlet hood (installed in Step 2). Observe the offset mounting hole locations in the deflector hood flanges when attaching hood to panel (see Fig. 64). Holes in the mounting flange must be at the bottom when attached.

4. Inlet hoods are shipped unassembled and must be assembled on the access panel (see Fig. 65). Flanges of the hood top and sides should be placed on the inside of the access panel openings. Install hood top and sides with screws provided. Attach speed clips to screen and insert screen into bottom opening of hood. Secure with 3 screws. On large inlet hoods, attach viewport cover over opening in hood (see Fig. 66). Secure with two screws.

Supply-Air Thermistors (Staged Gas Units Only) — Supply-air thermistors are a field-installed, factory-

provided component. Three supply-air thermistors are shipped with staged gas units inside the heating section. Thermistor wires must be connected to SGC in the heating section. See Table 19. The supply-air thermistors should be located in the supply duct with the following criteria:

• downstream of the heat exchanger cells

• equally spaced as far as possible from the heat exchanger cells

• a duct location where none of the supply air thermistors are within sight of the heat exchanger cells

• a duct location with good mixed supply air portion of the unit.

Table 17 — 48Z Series Staged Gas Implementation

NO. OF

STAGES

2 stages Z H, K, W, Y 030

5 stages Z J, L, X, Z 030

9 stages Z J, L, X, Z 055

LEGEND

CAPMXSTG — Maximum Capacity per Changes HTSTGTYP — Heat Stage Type LIMTHIHT — Limit Switch Thermistor High Temperature LIMTLOHT — Limit Switch Thermistor Low Temperature

MODEL NUMBER POSITION POINT

3 5 6,7,8 10 HTSTGTYP CAPMXSTG LIMTHIHT LIMTLOHT

035 040 050

H, K, W, Y 055

H, K 075

J, L 075

060 070

090 105

060 070

090 105

ALL Default=0 Default=45 Default=170 F Default=160 F Low

ALL Default=1 Default=20 Default=170 F Default=160 F High

ALL Default=1 Default=20 Default=135 F Default=125 F Low

-,A,B,C,D,E Default=1 Default=20 Default=135 F Default=125 F

G,H,J,K,L,M Default=1 Default=20 Default=130 F Default=120 F

ALL Default=3 Default=15 Default=135 F Default=125 F High

-,A,B,C,D,E Default=3 Default=15 Default=135 F Default=125 F

G,H,J,K,L,M Default=3 Default=15 Default=130 F Default=120 F

HEAT

SIZE

INLET HOOD

FLUE HOOD AND FLUE DEFLECTOR HOOD (48 SERIES HIGH-HEAT ONLY)

INLET HOOD

FLUE HOOD AND DEFLECTOR HOOD

INLET HOOD

Fig. 59 — Flue/Inlet Hood Locations, 030-060 Units

FLUE DEFLECTOR

PUSH BAFFLE DOWN SO THESE 2 HOLES ALIGN

BAFFLE

TOP (WHEN INSTALLED)

Fig. 62 — Flue Deflector Baffle, 030-050 and

075-105 Units (V-Type)

FLUE DEFLECTOR HOOD

FLUE AND FLUE DEFLECTOR HOOD

FLUE HOOD AND FLUE DEFLECTOR

LARGE INLET HOOD

SMALL INLET HOOD

LARGE INLET HOOD LOCATION (

HIGH-HEAT

ONLY)

HOOD

FLUE AND FLUE DEFLECTOR HOOD LOCATION (

HIGH-HEAT

ONLY)

Fig. 60 — Flue/Inlet Hood Locations, 055-105 Units

FLUE DEFLECTOR BAFFLE (BOTH HOODS)

Fig. 63 — Flue Deflector Baffle, 055-105 Units

(Curve-Type)

OBSERVE OFFSET MOUNTING HOLE LOCATIONS WHEN INSTALLING FLUE DEFLECTOR HOODS.

Fig. 61 — Flue Outlet Hood

Fig. 64 — Mounting Deflector Hoods

ACCESS PANEL OPENING

COVER (LARGE HOOD ONLY)

HOOD

VIEW PORT COVER

SIDE (TYP BOTH SIDES)

SPEED CLIP (TYP 3)

Fig. 66 — Inlet Hood View Port Cover Installation

(055-105 Units Only)

Fig. 65 — Inlet Hood Assembly

Table 18 — Flue and Inlet Hood Usage

HOOD TYPE PARTS LIST FIG. NO.

Top (14-in.) Side (Left)

Large Inlet

(14-in.)

Small Inlet

(6-in.)

Flue Outlet Pre-assembled 61 1 2 2 3 2 3

Flue Deflector

(V-Type)

Flue Deflector

(Curve-Type)

Side (Right) Screen Cover Speed Clips Screws

Top (6-in.) Side (Left) Side (Right) Screen Cover Speed Clips Screws

Hood Deflector Baffle Screws

65,66 3 3 1 2 1 2

Sizes 030-050

(Low Heat)

65 — — 1 1 1 1

62 1 2 — — 2 2

63 — — 2 3 — 1

Sizes 030-050

(High Heat)

QUANTITY USED

Sizes 055-070

(Low Heat)

Sizes 055-070

(High Heat)

Sizes 075-105

(Low Heat)

Sizes 075-105

(High Heat)

Table 19 — SGC Thermistor Designations

THERMISTOR

SAT1 J8 – 1,2 (SGC)

SAT2 J8 – 3,4 (SGC)

SAT3 J8 – 5,6 (SGC)

LIMTTEMP J8 – 15,16 (SGC)

SGC — Staged Gas Controller

CONNECTION

POINT

Supply-Air Thermistor (SAT) — Inserted into supply section underneath the gas heat section (factory-provided, field-installed)

Limit Switch Thermistor (LIMTTEMP) — Inserted next the lower limit switch (factory-installed)

Install Unit Accessories — For applications requiring

accessories, the following packages are available: All units:

• barometric relief

• space temperature sensor

•CO

• space temperature sensor with CO

sensor

• airflow switch

• filter switch

• smoke detector All 48ZG,ZT,Z6 units:

• modulating power exhaust

• pressure operated unloaders All 48ZN,ZW,Z8 units:

• modulating power exhaust

• VFD remote display Refer to the individual accessory installation instructions in

each accessory package for information on installing accessories.

CONTROLS INSTALLATION

Constant Volume (CV) Units —

may be used in applications with additional control features, options, or accessories. Refer to the appropriate accessory installation instructions for more information on installing that accessory. Control options and accessories available for CV units are:

• thermostats

• enthalpy sensor

• enthalpy switch

• relative humidity sensor

• CEM (controls expansion module)

• Navigator™ hand-held display

CONTROL WIRING — The unit can be controlled with a Carrier-approved accessory electro-mechanical or electronic thermostat that has two stages of cooling, two stages of heating control, and an output for fan control. The thermostat may also include time of day scheduling or use scheduling routines built into the ComfortLink™ controls.

Install the thermostat according to the installation instruc-

tions shipped with the accessory thermostat. Locate thermostat assembly on a solid interior wall to sense average temperature.

Route thermostat cable or equivalent leads of colored wire

from subbase terminals through conduit into the low voltage connections in the main control box. For thermostat TB203 connections, see Fig. 67.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For over 75 ft, use no. 14 AWG insulated wire (35 C minimum). All wire larger

The 48ZG,ZT,Z6 units

FUNCTION AND LOCATION

Thermistors

PART NO .

HH79NZ033

than no. 18 AWG cannot be directly connected at the thermostat and will require a junction box and splice at the thermostat.

Variable Air Volume (VAV) Units — The 48ZN,

ZW, Z8 units may be used in applications with additional control features, options, or accessories. Refer to the appropriate accessory installation instructions for more information on installing that accessory. Refer to the Controls and Troubleshooting manual for more information concerning installation and configuration of options and accessories. Control options and accessories available for VAV units are:

• enthalpy sensor

• enthalpy switch

• relative humidity sensor

• CEM (controls expansion module)

• Navigator hand-held display

• VFD remote display VAV CONTROL WIRING — The recommended types of

control wiring are shown below:

MANUFACTURER

Alpha 1895 —

American A21451 A48301

Belden 8205 884421

Columbia D6451 —

Manhattan M13402 M64430

Quabik 6130 —

Regular Wiring Plenum Wiring

PART NO.

SENSORS — Sensors should be wired using single twisted pairs of 20 AWG (American Wire Gage) conductor cable rated for the application, except for the T-56 accessory sensor which requires 3-conductor cable.

NOTE: Humidity and CO

sensors must be powered from

isolated 24-v power supplies. HUMIDITY CONTROL AND HOT WATER AND

STEAM VALVES — These devices require 20 AWG twisted pair conductor cables rated for the application for the 4 to 20 mA signal.

SPACE TEMPERATURE SENSOR (T-55) — The space temperature sensor (P/N 33ZCT55SPT) is shipped standard with every unit, and is located in the main control box. Space temperature sensor wires are to be connected to terminals in the unit main control box.

CAUTION

Jumper MUST be in place between pins 1 and 3, 3 and 4 or inaccurate readings could result.

To connect the space temperature sensor, see Fig. 68.

SPACE TEMPERATURE SENSOR (T-56) — The space temperature sensor (P/N 33ZCT56SPT) wires are connected to terminals in the unit main control box.

CAUTION

Jumper MUST be in place between pins 1 and 3, 3 and 4 or inaccurate readings could result.

To connect the space temperature sensor, see Fig. 68. COMMUNICATING SPACE TEMPERATURE SENSOR

(T-58) — The communicating space temperature sensor (P/N 33ZCT58SPT) is wired to the Carrier Comfort Network (CCN) connections on TB202.

SPACE TEMPERATURE AVERAGING — Applications that require averaging using multiple space temperature sensors can be satisfied using either 4 or 9 sensors as shown in Fig. 69.

NOTE: Only Carrier sensors may be used for standard T-55 space averaging. Sensors must be used in multiples of 1, 4, and 9 only, with total sensors wiring not to exceed 1000 ft. However, space temperature reset can be accomplished with only one sensor.

NOTE: Do not use T-56 sensors for space temperature averaging because the 5-degree offset function will not work in a multiple sensor application.

HEAT INTERLOCK RELAY (VAV Units Only — Not Necessary For Digital Air Volume Applications) — Variable air volume (VAV) units using optimal start (morning warm-up) and/ or occupied heating require that room terminals be controlled to the fully open position when the unit goes into Heating mode. The HIR (heat interlock relay) function is provided for this control. When the unit goes into Heating mode, the HIR is energized to provide switch closure or opening (depending on how the field-supplied power source is set up) to open the room terminals. The field connections for the HIR are at TB201 terminals 7 and 8. See Fig. 70.

Option and Accessory Control Wiring — The Z

Series units may be used in applications with additional control features, options, or accessories. Refer to the Controls and Troubleshooting manual for more information concerning installation and configuration of options and accessories. Figures 70-80 contain wiring information on the following features:

• heat interlock relay (Fig. 70)

• outdoor air enthalpy switch (Fig. 71)

•CO

space sensor (Fig. 72)

• filter status switch (Fig. 73)

• fan status switch (Fig. 74)

• space humidity sensor (Fig. 75)

• return air humidity sensor (Fig. 75)

• return air CO

sensor (Fig. 76)

• return air smoke detector (Fig. 77)

• smoke control — fire shutdown (Fig. 78)

• smoke control — purge (Fig. 79)

• smoke control — evacuation (Fig. 79)

• smoke control — pressurization (Fig. 79)

• CCN connections (Fig. 80)

Carrier Comfort Network (CCN) Interface — The

48ZN,ZW,Z8 units can be connected to the CCN system if desired. The communication bus wiring is supplied and installed in the field. It consists of shielded, 3-conductor cable with shield wire.

The system elements are connected to the communication

bus in a daisy chain arrangement. The positive pin of each

system element communication connector must be wired to the positive pins of the system element on either side of it, the negative pins must be wired to the negative pins, and the signal pins must be wired to signal ground pins. Wiring connections for the CCN system should be made at the terminal block using the screw terminals. The board also contains an RJ14 CCN plug that can be used to connect a Navigator™ device or field service computer. There is also another RJ14 LEN (Local Equipment Network) connection that is used to download software. Consult CCN Contractor’s Manual for further information.

NOTE: Conductors and drain wire must be 20 AWG minimum

stranded, tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating temperature range of –4 to 140 F (–20 C to 60 C) is required. See Table 20 for cables that meet the requirements.

Table 20 — CCN Connection Approved

Shielded Cables

MANUFACTURER CABLE PART NO.

Alpha 2413 or 5463

American A22503

Belden 8772

Columbia 02525

IMPORTANT: When connecting the CCN communication bus to a system element, use a color coding system for the entire network to simplify installation and checkout.

The following color code is recommended:

SIGNAL

TYPE

+ RED 1

GROUND WHITE 2

– BLACK 3

CCN BUS CONDUCTOR

INSULATION COLOR

COMM1 PLUG

PIN NO.

NOTE: If a cable with a different color scheme is selected, a similar color code should be adopted for the entire network.

At each system element, the shields of its communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting continuous field must be connected to a ground at one point only. If the communication bus cable exits from one building and enters another, the shields must be connected to grounds at the lightning suppressor in each building where the cable enters or exits the building (one point per building only).

To connect the unit to the network (Fig. 80):

1. Turn off power to the control box.

2. Cut the CCN wire and strip the ends of the red (+), white (ground) and black (–) conductors. (If a different network color scheme is used, substitute appropriate colors.)

3. Wire the CCN to the screw terminals on the COMM board as follows (Fig. 80):

a. Secure the red (+) wire to CCN screw terminal +

on the COMM board.

b. Secure the white (ground) wire to CCN screw

terminal C on the COMM board.

c. Secure the black (–) wire to CCN screw terminal –

on the COMM board.

d. Secure shield wire to CCN screw terminal

SHIELD on the COMM board.

IMPORTANT: A shorted CCN bus cable will prevent some routines from running and may prevent unit from starting. If abnormal conditions occur, unplug the connector. If conditions return to normal, check CCN connector, and run new cable if necessary. A short in one section of the bus can cause problems with all system elements on the bus.

RJ14 PLUG WIRING — Units on the CCN can be monitored from the space at the sensor through the RJ14 connector, if desired. To wire the RJ14 connector into the CCN (Fig. 80):

IMPORTANT: The cable selected for the RJ14 connector wiring MUST be identical to the CCN communication bus wire used for the entire network.

1. Cut the CCN wire and strip ends of the red (+), white (ground), and black (–) conductors. (If another wire color scheme is used, strip ends of appropriate wires.)

2. Secure the red (+) wire to CCN screw terminal + on the COMM board.

3. Secure the white (ground) wire to CCN screw terminal C on the COMM board.

4. Secure the black (–) wire to CCN screw terminal – on the COMM board.

5. Secure shield wire to CCN screw terminal SHIELD on the COMM board.

6. Connect the other end of the communication bus cable to the CCN communication bus.

Smoke Control Modes — Rooftop units can be used

for aid in building smoke control in the event of a building fire. The available functions include: Fire Shutdown, Pressurization, Evacuation, and Smoke Purge. These functions are enhanced when multiple rooftop units are used to zone a building. See Table 21 and Fig. 78 and 79.

FIRE SHUTDOWN — Fire Shutdown mode terminates all unit operation (cooling, heating, supply fan, and power exhaust). This mode prevents recirculation of contaminated air back into the space. The mode will not allow admission into the space of unsuitable outside air. See Fig. 78 for wiring.

PRESSURIZATION — Pressurization mode is intended to keep smoke out of a zone. The factory-installed optional economizer is required for this function. Pressurization is accomplished by the following:

• opening the economizer (option)

• running the supply fan (optional inlet guide vanes open or optional VFD at normal duct static pressure set point)

• closing the power exhaust dampers (if installed as option or accessory)

• shutting off the power exhaust fans (if installed as option or accessory)

This allows the space to be overpressurized relative to adja-

cent zones and prevents or slows entry of smoke into this space from adjacent zones. See Fig. 79 for wiring.

EVACUATION — Evacuation mode removes smoke or undesirable air from interior spaces without reintroducing unsuitable air. The factory-installed optional economizer with option/ accessory power exhaust is required for this function. Evacuation is accomplished by the following:

• turning the supply fan off

• opening the economizer (option required)

• running the exhaust fans (option or accessory required)

• opening the exhaust dampers. See Fig. 79 for wiring.

SMOKE PURGE — Smoke Purge mode removes smoke from the interior spaces and replaces it with fresh outside air. The factory-installed optional economizer with option/ accessory power exhaust are required for this function. Smoke purge is accomplished by the following:

• turning supply fan on

• opening the economizer (option required)

• running the exhaust fans (option or accessory required)

• opening the exhaust dampers See Fig. 79 for wiring.

SMOKE CONTROL INSTALLATION — Implementation of the various smoke control modes on these units requires the installer to modify the unit wiring to add contacts (via either manual switches or relays) that will selectively interrupt and override standard factory control sequences. See Table 21 and Fig. 78 and 79 for more information.

Table 21 — Smoke Control Modes

FUNCTION

Supply Fan Off On Off On IGV/VFD† — Open/On — Open/On Economizer Closed Open Open Open Return Air

Damper Exhaust

Fans Exhaust

Damper

IGV — Inlet Guide Vane PIC — Product Integrated Control VAV — Variable Air Volume VFD — Variable Frequency Drive

*Power exhaust option required for this mode.

†Applicable to VAV and PIC units with appropriate options.

Fire

Shutdown

Open Closed Closed Closed

Off Off On On

Closed Closed Open Open

LEGEND

FIELD SUPPLIED THERMOSTAT

Y1 Y2 W1 W2 G

65432

Pressur-

ization

TB203

MODE

Evacuation*

Smoke Purge*

Fig. 67 — Field Control Thermostat Wiring

T56- SPTT55- SPT

UNIT TB202

Fig. 68 — T55 or T56 Wiring

TB202

RED

TB202

BLK

SENSOR 1

SPACE TEMPERATURE AVERAGING (4 SENSOR APPLICATION)

SENSOR 1

SENSOR 2

SENSOR 2 SENSOR 3

SENSOR 3

SENSOR 4

NOTE: Use T55 sensor only.

SENSOR 4

SENSOR 7

SPACE TEMPERATURE AVERAGING (9 SENSOR APPLICATION)

SENSOR 5

SENSOR 8

SENSOR 6

SENSOR 9

Fig. 69 — Space Temperature Averaging Wiring

Fig. 70 — Heat Interlock Relay Wiring

FIELD INSTALLED (FIELD SUPPLIED) JUMPER WHEN ENTHALPY SWITCH NOT USED

Fig. 71 — Outdoor Air Enthalpy Switch Wiring

RCB J4

FILTER STATUS

Fig. 72 — CO

Space Sensor Wiring

Fig. 73 — Filter Status Wiring

MBB J8

MBB

CEM J6

RCB

Fig. 74 — Fan Status Switch Wiring

Fig. 75 — Space and Return Air Humidity Sensor Wiring

Fig. 76 — Return Air CO

Sensor Wiring

Fig. 77 — Return Air Smoke Detector Wiring

Fig. 78 — Fire Shutdown Wiring

MBB

Fig. 79 — Purge, Evacuation, and Pressurization Wiring

RCB J4

COMM BOARD

MBB

Fig. 80 — CCN Connections

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 68 4-09 Replaces: 48Z-7SI

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

Specifications and Main Features

Frequently Asked Questions

User Manual