York PREDATOR 150 User Manual

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INSTALLATION MANUAL

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

SAFET Y C ON S ID E RA T IONS. . . . . . . . . . . . . . . . . . . . . .5

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

REFERENCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

APPROVALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

START-UP (COOLING). . . . . . . . . . . . . . . . . . . . . . . . . .37

NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . .39

SINGLE PACKAGE AIR CONDITIONERS AND

SINGLE PACKAGE ELECTRIC UNITS

DM090, 120 and 150

7-1/2 TO 12-1/2 TON

(380V, 3 Phase, 60 HZ)

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .39

See following pages for a complete Table of Contents.

NOTES, CAUTIONS AND WARNINGS

The installer should pay particular attention to the words: NOTE, CAUTION, and WARNING. Not es clarify or make the installation easier. Cautions to prevent equipment damage. Warnings installer that personal injury and/or equipment damage may result if installation procedure is not handled properl y.

are intended to

are given

are given to alert

CAUTION: READ ALL SAFETY GUIDES BEFORE YOU

BEGIN TO INSTALL YOUR UNIT.

SA VE THIS MANUAL

035-17311-002-A-0803

Page 2

TABLE OF CONTENTS

035-17311-002-A-0803

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . .5

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

INSTALLATION SAFETY INFORMATION . . . . . . . . . . . . . 10

PRECEDING INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 10

LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . 11

CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

DUCT COVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

THERMOSTAT WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . . . 17

POWER WIRING DETAIL . . . . . . . . . . . . . . . . . . . . . . . . . . 17

OPTIONS/ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . 21

ELECTRIC HEAT ACCESSORIES . . . . . . . . . . . . . . . . . . . . . 21

ELECTRIC HEAT OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

MOTORIZED OUTDOOR DAMPER . . . . . . . . . . . . . . . . . . . . 21

ECONOMIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

POWER EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

ECONOMIZER AND POWER EXHAUST SET POINT

ADJUSTMENTS AND INFORMATION . . . . . . . . . . . . . . . 22

MINIMUM POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . .22

ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . . . . . . . . 22

POWER EXHAUST DAMPER SET POINT (WITH OR

WITHOUT POWER EXHAUST) . . . . . . . . . . . . . . . . . . . . . . .22

INDOOR AIR QUALITY AQ . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

PHASING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

BLOWER ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

BELT TENSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

AIR BALANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

CHECKING AIR QUANTITY . . . . . . . . . . . . . . . . . . . . . . . . 31

METHOD ONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

METHOD TWO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

SUPPLY AIR DRIVE ADJUSTMENT . . . . . . . . . . . . . . . . . 32

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SEQUENCE OF OPERATIONS OVERVIEW . . . . . . . . . . . 33

COOLING SEQUENCE OF OPERATION . . . . . . . . . . . . . . 34

CONTINUOUS BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

INTERMITTENT BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . .34

NO OUTDOOR AIR OPTIONS . . . . . . . . . . . . . . . . . . . . . . . .34

ECONOMIZER WITH SINGLE ENTHALPY SENSOR - . . . . .34

ECONOMIZER WITH DUAL ENTHALPY SENSORS - . . . . . .34

ECONOMIZER WITH POWER EXHAUST - . . . . . . . . . . . . . .34

MOTORIZED OUTDOOR AIR DAMPERS - . . . . . . . . . . . . . .34

COOLING OPERATION ERRORS . . . . . . . . . . . . . . . . . . . . .35

HIGH-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . . . . . . .35

LOW-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . . . . . . . .35

FREEZESTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

LOW AMBIENT COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

COMPRESSOR PROTECTION . . . . . . . . . . . . . . . . . . . . . 35

FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

ELECTRIC HEATING SEQUENCE OF OPERATIONS . . . 36

ELECTRIC HEATING OPERATION ERRORS . . . . . . . . . . 36

TEMPERATURE LIMIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

LIMIT SWITCH (LS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

ELECTRIC HEAT ANTICTPATOR SETPOINTS . . . . . . . . . 36

START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . . . 37

PRESTART CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 37

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 37

POST START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . 37

CHARGING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 39

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

MOTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

OUTDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . 39

PREDATOR® FLASH CODES . . . . . . . . . . . . . . . . . . . . . . 39

COOLING TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . 41

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LIST OF FIGURES

Fig. # Pg.#

1 UNIT SHIPPING BRACKET . . . . . . . . . . . . . . . . . . . . 10

2 CONDENSER COVERING . . . . . . . . . . . . . . . . . . . . 10

3 COMPRESSOR SECTION . . . . . . . . . . . . . . . . . . . . . 10

4 PREDATOR

COMPONENT L OCATION . . . . . . . . . 11

5 UNIT 4 POINT LOAD . . . . . . . . . . . . . . . . . . . . . . . . . 12

6 UNIT 6 POINT LOAD . . . . . . . . . . . . . . . . . . . . . . . . . 12

7 UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . 12

8 UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 13

9 BOTTOM DUCT OPENINGS (FROM ABOVE) . . . . . 14

10 REAR DUCT DIMENSIONS . . . . . . . . . . . . . . . . . . . . 14

11 PREDATOR 12 SUNLINE™ TO PREDATOR

ROOF CURB DIMENSIONS . . . . . . . . 15

TRANSITION ROOF

CURBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Fig. #

Pg.#

13 SIDE PANELS WITH HOLE PLUGS . . . . . . . . . . . . . 16

14 RETURN DOWNFLOW PLENUM WITH PANEL . . . 16

15 DISCHARGE PANEL IN PLACE . . . . . . . . . . . . . . . . 16

16 CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . 16

17 ELECTRONIC THERMOSTAT FIELD WIRING . . . . 18

18 FIELD WIRING 24 VOLT THERMOSTAT . . . . . . . . . 18

19 FIELD WIRING DISC ONNECT . . . . . . . . . . . . . . . . . 19

20 ENTHALPY SET POINT CHART . . . . . . . . . . . . . . . . 23

21 HONEYWELL ECONOMIZER CONTROL W7212 . . 23

22 BELT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 24

23 DRY COIL DELTA P . . . . . . . . . . . . . . . . . . . . . . . . . 32

24 BASIC TROUBLESHOOTING FLOWCHART . . . . . . 40

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LIST OF TABLES

035-17311-002-A-0803

Tbl.# Pg.#

1 UNIT VOLTAGE LIMITATIONS . . . . . . . . . . . . . . . . . 11

2 UNIT TEMPERATURE LIMITATIONS . . . . . . . . . . . . 11

3 UNIT WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 6 POINT LOAD WEIGHT . . . . . . . . . . . . . . . . . . . . . . 12

5 4 POINT LOAD WEIGHT . . . . . . . . . . . . . . . . . . . . . . 12

6 UNIT CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . 13

7 CONTROL WIRE SIZES . . . . . . . . . . . . . . . . . . . . . . .17

8 ELECTRICAL DATA - DM090 (7-1/2 TON) WITHOUT

POWER C O N VE N IE N C E O U T L E T . . . . . . . . . . . . . .19

9 ELECTRICAL DATA - DM090 (7-1/2 TON) WITH

POWER C O N VE N IE N C E O U T L E T . . . . . . . . . . . . . .19

10 ELECTRICAL DATA - DM120 (10 TON) WITHOUT

POWER C O N VE N IE N C E O U T L E T . . . . . . . . . . . . . .20

11 ELECTRICAL DATA - DM120 (10 TON) WITH POWER

CONVE NIE N C E OU T L E T . . . . . . . . . . . . . . . . . . . . .20

12 ELECTRICAL DATA - DM150 (12-1/2 TON) WITHOUT

POWER C O N VE N IE N C E O U T L E T . . . . . . . . . . . . . .20

13 ELECTRICAL DATA - DM150 (12-1/2 TON) WITH

POWER C O N VE N IE N C E O U T L E T . . . . . . . . . . . . . .20

14 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

15 MINIMUM SUPPLY AIR CFM . . . . . . . . . . . . . . . . . . . 21

16 SUPPLY AIR LIMITATIONS . . . . . . . . . . . . . . . . . . . . 24

17 7-1/2 TON STANDARD MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 25

18 7-1/2 TON OPTIONAL MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 25

19 10 TON STANDARD MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 26

Tbl.# 20 10 TON OPTIONAL MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 26

21 12-1/2 TON STANDARD MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 27

22 12-1/2 TON OPTIONAL MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 27

23 7-1/2 TON STANDARD MOTOR SIDE SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 28

24 7-1/2 TON OPTIONAL MOTOR SIDE SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 28

25 10 TON STANDARD MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 29

26 10 TON OPTIONAL MOTOR DOWN SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 29

27 12-1/2 TON STANDARD MOTOR SIDE SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 30

28 12-1/2 TON OPTIONAL MOTOR SIDE SHOT

BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . 30

29 INDOOR BLOWER SPECIFICATIONS . . . . . . . . . . . 31

30 ADDITIONAL STATIC RESISTANCE . . . . . . . . . . . . 33

31 MOTOR SHEAVE DATUM DIAMETERS . . . . . . . . . . 33

32 ELECTRIC HEAT LIMIT SETTING . . . . . . . . . . . . . . 36

33 ELECTRIC HEAT ANTICIPATOR SETPOINTS . . . . 36

34 7.5 TON STANDARD EFFICIENCY SUPERHEAT

CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

35 10 TON STANDARD EFFICIENCY SUPERHEAT

CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

36 12.5 TON STANDARD EFFICIENCY SUPERHEAT

CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

37 UNIT CONTROL BOARD FLASH CODES . . . . . . . . 40

Pg.#

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035-17311-002-A-0803

GENERAL

YORK Predator® units are single package air conditioners designed for outdoor installation on a rooftop or slab and for non-residential use. These units can be equipped with factory or field installed electric heaters for heating applications.

These units are completely assembled on rigid, permanently attached base rails. All piping, refrigerant charge, and electrical wiring is factory installed and tested. The units require electric power and duct connections. The electric heaters have nickel-chrome elements and utilize single-point power connection.

SAFETY CONSIDERATIONS

Due to system pressure, moving parts, and electrical components, installation and servicing of air conditioning equipment can be hazardous. Only qualified, trained service personnel should install, repair, or service this equipment. Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters.

Observe all precautions in the literature, labels, and tags accompanyi ng the equipment whenever working on air conditioning equipment. Be sure to follow all other applicable safety precautions and codes.

REFERENCE

Additional information is available in the following reference forms:

• General Installation - DM090 - 150, 035-17311-002

• Pre-start & Post-start Check List - 035-18466-000

• Econ om izer Accessory Downflow Factory Installed, 035-18286-000 Downflow Field Inst alled, 035-18285-000 Horizontal Field Installed, 035-18287-000

• Motorized O utdoor Air Damper 035-18283-000

• Manual Outdoor Air Damper (0-100%) 035-18282-000

• Manual Outdoor Air Damper (0-35%) 035-18281-000

• Elect ric Heater Accessory 035-17291-001

• Unit Renewa l Par ts List 035-17288-000

All forms referenced in this instruction may be ordered from:

Stand ard Register T o ll Free Fax: (877) 379-7920 T o ll Free Phone: (877) 318-9675

APPROVALS

Design certifie d by CSA as fol lows :

Wear safety glasses and work gloves. Use quenching cloth and have a fire extinguisher available during brazing operations.

INSPECTION

As soon as a unit is received , it should be in spected fo r poss ible damage during transit. If damage is evident, the extent of the damage should be noted on the carrier’s freight bill. A separate request for inspection by the carrier’s agent should be made in writi ng.

This furnace is not to be used for temporary heating of buildings or structures under construction.

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury. Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a quali fi ed installer, service agency.

1. For use as a cooling only unit, cooling uni t with supplemental elect ri c heat or a forced air furnace.

2. For outdoor installation only.

3. For installation on combustible material and may be installed dir ectly on combustible flooring or, in the U.S., on wood flooring or Class A, Class B or Class C roof covering materials .

This product must be installed in strict compliance with the enclosed installation instructions and any applicable local, state, and national codes including, but not limited to, building, electrical, and mechanical codes.

Incorrect installation may create a condition where the operation of the product could cause personal injury or property damage.

The installer should pay particular attention to the words: NOTE, CAUTION, and WARNING. NOTES are intended to clarify or make the installation easier. CAUTIONS are given to prevent equipment dam age. WARNINGS are given to alert installer that personal injury and/or equipment damage may result if inst allation procedure i s not handled properly.

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NOMENCLATURE

6½ - 12½ Ton Predator Model Number Nomenclature

035-17311-002-A-0803

D M C00

Product Category

D = Air Cond., Single Package

Product Identifier

M = R-22 Standard Efficiency

Nominal Cooling Capacity - MBH

090 = 7-½ Ton 120 = 10 Ton 150 = 12-½ Ton

Heat Type & Nominal Heat Capacity

C00 = Cooling Only. Suitable for field installed electric heat

Electric Heat Options

E09 = 9 kW Electric Heat E18 = 18 kW Electric Heat E24 = 24 kW Electric Heat E36 = 36 kW Electric Heat E54 = 54 kW Electric Heat

Voltage

3 = 380-3-60

AA 3090

A3A

Product Generation

3 = Third Generation

Installation Options

A = No Options Installed B = Option 1 C = Option 2 D = Options 1 & 2 E = Option 3 F = Option 4 G = Options 1 & 3 H = Options 1 & 4 J = Options 1, 2 & 3 K = Options 1, 2 & 4 L = Options 1, 3 & 4 M = Options 1, 2, 3 & 4 N = Options 2 & 3 P = Options 2 & 4 Q = Options 2, 3 & 4 R = Options 3 & 4 S = Option 5 T = Options 1 & 5 U = Options 1, 3 & 5 V = Options 1, 4 & 5 W = Options 1, 3, 4 & 5 X = Options 3 & 5 Y = Options 4 & 5 Z = Options 3, 4 & 5

Additional Options

(See Next Page)

Options

1 = Disconnect 2 = Non-Pwr’d Conv Outlet 3 = Smoke Detector S. A. 4 = Smoke Detector R. A. 5 = Pwr’d Conv Outlet

Airflow

A = Standard Motor B = Standard Motor/Economizer/Barometric Relief (Downflow only) C = Standard Motor/Economizer/Power Exhaust (Downflow only) D = Standard Motor/Motorized Damper (Downflow only) E = Standard Motor/Horizontal Economizer (No Barometric Relief or Power Exhaust) F = Standard Motor/Slab Economizer/Power Exhaust (Downflow only) G = Standard Motor/Slab Economizer/Barometric Relief (Downflow only) L = Standard Motor/BAS Ready Econ (NoBASController)/Barometric Relief w/2" Pleated Filters (Downflow only) M = Standard Motor/BAS Ready Econ (NoBASController)/Power Exhaust w/2" Pleated Filters (Downflow only) N = High Static Motor P = High Static Motor/Economizer/Barometric Relief (Downflow only) Q = High Static Motor/Economizer/Power Exhaust (Downflow only) R = High Static Motor/Motorized Damper (Downflow only) S = High Static Motor/Horizontal Economizer (No Barometric Relief or Power Exhaust) T = High Static Motor/Slab Economizer/Power Exhaust (Downflow only) U =High Static Motor/Slab Economizer/Barometric Relief (Downflow only) Y = High Static Motor/BAS Ready Econ (NoBASController)/Barometric Relief w/2" Pleated Filters (Downflow only) Z = High Static Motor/BAS Ready Econ (NoBASController)/Power Exhaust w/2" Pleated Filters (Downflow only)

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035-17311-002-A-0803

NOMENCLA TURE, ADDITO NAL OPTIONS:

AA None AB Phase Monitor AC Coil Guard AD Dirty Filter Switch AE Phase Monitor & Coil Guard AF Phase Monitor & Dirty Filter Switch AG Coil Guard & Dirty Filter Switch AH Phase Monitor, Coil Guard, & Dirty Filter Switch CA CPC Controller with Dirty Filter Switch & Air Proving Switch CB CPC Controller, DFS, APS & Phase Monitor CC CPC Controller, DFS, APS & Coil Guard CD CPC Controller, DFS, APS, Phase Monitor , & Coil Guard CE CPC Controller, DFS, APS & Tech nico at Cond. Coil CF CPC Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor CG CPC Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard CH CPC Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard CJ CPC Controller, DFS, APS & Te ch nico at Evap. Coil CK CPC Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor CL CPC Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard CM CPC Controller, DFS, APS, Technico at Evap. Coil, Phase Monitor, & Coil Guard CN CPC Controller, DFS, APS & Technicoat Evap. & Cond Coils CP CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor CQ CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard CR CPC Controller, DFS, APS, Technicoat Cond Coils, Phase Monitor, & 2” Pleated Filters CV CPC Controller, DFS, APS, & 2” Pleated Filters CX CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, Coil Guard HA Hon ey w e ll Exc e l 10 C on troller with Dirty Fil ter Sw it ch & Air Pr ov in g Swit ch HB Honeywe ll Excel 10 Controller, DFS, APS & Phase Monitor HC Honeywell Excel 10 Controller, DFS, APS & Coil Guard HD Honeywell Excel 10 Controller, DFS, APS, Phase Monitor, & Coil Guard HE Honeywe ll Excel 10 Controller, DFS, APS & Technicoat Cond. Coil HF Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monito r HG Honeywell Excel 10 Controller, DFS, APS, Techn icoa t Cond. Coi l, & Coil Guard HH Honeywell Excel 10 Controller, DFS, APS, Technicoat Con d. Coil, Phas e Monit or, & Coil Guard HJ Honeywe ll Excel 10 Contro ller, DFS, APS & Technicoat Evap. Coil HK Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor HL Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard HM Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard

Unitary Products Group 7

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HN H oneyw ell Exce l 10 Controller, DFS, APS & Technicoat Evap. & Cond Coils HP Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor HQ Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard HR Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard JA Johnson UNT Controller with Dirty Filter Switch & Air Proving Switch JB Johnson UNT Controller, DFS, APS & Phase Monitor JC Johnson UNT Controller, DFS, APS & Coil Guard JD Johnson UNT Controller, DFS, APS, Phase Monitor, & Coil Guard JE Johnson UNT Controller, DFS, APS & Technico at Cond. Coil JF Johnson UNT Contro ller, DFS, APS, Technicoat Cond. Coi l, & Phase Mon itor JG Johnson UNT Controller, DFS, APS, Technicoat Con d. Coil, & Coil Guard JH Johns on UNT Contro ller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard JJ Johnson UNT Controller, DFS, APS & Technicoat Evap. Coil JK Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor JL Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard JM Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard JN Johnson UNT Controlle r, DFS, APS & Technicoat Evap. & Cond Coils JP Johnson UNT Controller, DFS, APS, T echnicoat Evap. & Cond Coils, & Phase Monitor JQ Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard JR Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard NA Novar ETC-3 Controller with Dirty Filter Switch & Air Proving Switch NB Novar ETC-3 Controller, DFS, APS & Phase Monitor NC Novar ETC-3 Controller, DFS, APS & Coil Guard ND Novar ETC-3 Controller, DFS, APS, Phase Monitor, & Coil Guard NE Novar ETC-3 Controller, DFS, APS & Technicoat Cond. Coil NF Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor NG Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard NH Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard NJ Novar ETC-3 Controller, DFS, APS & Technicoat Evap. Coil NK Novar ETC-3 Cont rol ler, DFS, APS, Technicoa t Evap. Coil, & Phase M onito r NL Novar ETC-3 Controlle r, DFS, APS, Technicoat Evap. Coi l, & Coil Guard NM Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coi l, Phase Mo nitor, & Coil Guard NN Novar ETC-3 Controller, DFS, APS & Technicoat Evap. & Cond Coils NP Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor NQ Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard NR Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard TA Technicoat Condenser Coil TB Technicoat Condenser C oil & Phase Monitor TC Technicoat Condenser Coil & Coil Guard TD Technicoat Condenser Coil & Dirty Filter Switch

035-17311-002-A-0803

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035-17311-002-A-0803

TE Technicoat Condenser Coil, Phase Monitor, & Coil Guard TF Technicoat Condenser Coil, Phase Monitor, & Dirty Filter Switch TG T echnicoat Condenser Coil, Coil Guard , & Dirty Filter Swit ch TH Technicoat Condenser Coil, Phase Monitor, Coil Guard, & Dirty Filter Switch TJ Technicoat Evaporator Coil TK Technicoat Evaporator Coil & Phase Monitor TL Technicoat Evaporator Coil & Coil Guard TM Technicoat Evaporator Coil & Dirty Filter Switch TN Technicoat Evaporator Coil, Phase Monitor, & Coil Guard TP Technicoat Evaporator Coil, Phase Monitor, & Dirty Filter Switch TQ Technicoat Evaporator Coil, Coil Guard, & Dirty Filter Switch TR Technicoat Evaporator Coil, Phase Monitor, Coil Guard, & Dirty Filter Switch TS Technicoat Evaporator & Condenser Coils TT Technicoa t Evaporator & Condenser Coils & Phase Monitor TU Technicoat Evaporator & Condenser Coils & Coil Guard TV Technicoat Evaporator & Condenser Coils & Dirty Filter Switch TW Technicoat Evaporator & Condenser Coils, Phase Monitor, & Coil Guard TX Technicoat Evaporator & Co ndenser Coils, Phas e Monitor, & Dirty Filter Switch TY Technicoat Evaporator & Co ndenser Coils, Coil Guard, & Dirty Filter Switch TZ Technicoat Evaporat or & Conden ser Coils, Phase Moni tor, C oil Guar d, & Dirty Filter Switch

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035-17311-002-A-0803

INSTALLATION

INSTALLATION SAFETY INFORMATION

Read these instructions before continuing this appliance installation. This is an outdoor combination heating and cooling unit. The installer must assure that these instructions are made available to the consumer and with instructions to retain them for future reference.

1. Install this furnace only in a location and posi ti on as specified on Page 11 of these instructions.

2. This equipment is not to be used for tempor ary heating of building s or st ructures under construction.

PRECEDING INSTALLATION

1. Remove the two screws holdi ng the bra ckets in the f ront, rear and compressor side fork-lift slots.

Bracket Screws

Turn down

Toolless Doorknobs

Installation Instruction Packet

FIGURE 3 - COMPRESSOR SECTION

FIGURE 1 - UNIT SHIPPING BRACKET

2. Turn each bracket toward the ground and the protective plywood cov e rin g w ill d ro p to the gr ound.

3. Remove the condenser coil external protective covering prior to operati on.

4. Remove the toolless doorknobs and instruction packet prior to installation.

Condenser Coil External Protective Covering

Barometric Relief Hood in Shipping Location (if included)

FIGURE 2 - CONDENSER COVERING

LIMITATIONS

These units must be installed in accordance with the following:

In U.S.A.

1. National Electrical Code, ANSI/NFPA No. 70 - Latest

2. Local building codes, and

3. Local plumbing and waste water codes, and

4. Other applicable local codes. Refer to Tables 1 & 2 for unit appli cation data.

If components are to be added to a unit to meet local codes, they are to be installed at the dealer’s and/or customer’s expense.

Size of unit for propos ed installation should be based on heat loss/heat gain calculation made according to the methods of Air Conditioning Contractors of America (ACCA).

Edition

10 Unitary Products Group

Page 11

035-17311-002-A-0803

Terminal block for hi-voltage connection

Simplicity™ Control board w/screw connector for T-stat wiring and network connection

Disconnect location (optional disconnect switch)

Filter access (2” throw-away)

Filter drier (solid core)

Second model nameplate inside hinged access panel

Dual stage cooling for max. com fort

Compressor #2 access (highefficiency compressor with crankcase heater

Base rails w/forklift slots (3 sides) and lifting holes)

Tool-less door latch

Side entry power and control wiring knockouts

FIGURE 4 - PREDATOR® COMPONENT LOCATION

TABLE 1: UNIT VOLTAGE LIMITATIONS

Power Rating Minimum Maximum

380 350 418

TABLE 2: UNIT TEMPERATURE LIMITATIONS

Temperature Min. Max.

Wet Bulb T emperature (°F) of A i r on

Evaporator Coil

Dry Bulb Temperature (°F) of A ir o n

Condenser Coil

A low ambient accessory is available for operation

57 72

125

down to - 20°F.

LOCATION

Use the following guidelines to select a suitable location for these units:

1. Unit is designed for outdoor installation only.

2. Condenser coils must have an unlimited supply of air. Where a choice of location is possible, positi on the unit on either north or east side of building.

3. Suitable for mounting on roof curb.

Condenser section

Belt-drive blower motor

Slideout motor & blower assembly for easy access adjustment & service

Compressor #1 access (highefficiency compressor w/ crankcase heater))

Slide-out drain pan with steel 3/4” FPT

Roof curbs in eight- and fourteen-inch heights. Roof curbs for transitioning from York Sunline™ footprint to the DM Series footprint are also available (field-installed accessory)

connection

4. For ground level install ation, use a level concret e slab with a minimum thickness of 4 inches. The length and width should be at least 6 inches greater than the unit base rails. Do not tie slab to the building foundation.

5. Roof structures must be able t o supp ort the weight of the unit and its options/accessories. Unit must be installed on a solid, level roof curb or appropriate angle iron frame.

6. Maintain level tolerance to 1/2” across the entire width and length of unit.

RIGGING AND HANDLING

Exercise care when moving the unit. Do not remove any packaging until the unit is near the place of installation. Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails. Spreader bars, whose length exceeds the largest dimension across the unit, MUST be used across the top of the unit.

If a unit is to be installed on a roof curb other than a YORK roof curb, gasketing must be applied to all surfaces that come in contact with the unit underside.

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Before lifting, make sure the unit weight is distributed equall y on the riggin g cables so it wil l lift evenly.

Units may be moved or lifted with a forklift. Slotted openings in the base rails are prov ided for this purpose.

035-17311-002-A-0803

TABLE 4: 6 POINT LOAD WEIGHT

Model

Location (lbs.)

ABCDEF

DM090

158 142 128 187 207 230

DM120 168 151 136 198 219 244 DM150 180 161 145 212 235 262

Weights inc lude largest ga s he at op tion.

LENGTH OF FORKS MUST BE A MINIMUM OF 60 INCHES.

All panels must be secured in place when the unit is lifted.

The condenser coils should be protected from rigging cable damage with plywood or other suitable material.

L E F T

F R O N T

TABLE 5: 4 POINT LOAD WEIGHT

Model

ABCD

DM090

230 197 287 336

DM120 245 209 305 357 DM150 262 224 327 382

Weights inc lude largest ga s he at op tion.

L E F T

Location (lbs.)

FIGURE 6 - U NIT 6 POI N T LOAD

F R O N T

FIGURE 5 - UNIT 4 POINT LOAD

TABLE 3: UNIT WEIGHTS

Model

DM090 1056 1051 DM120 DM150 1200 1195

Econ. 85 84 w/ PE 150 148

Elec. Heat

*. †.

Shipping Weight

Weights include largest gas heat option. 54kW heater.

1121 1116

49 49

Operating Weight

(lb.)

†

(lb.)

FIGURE 7 - UNIT CENTER OF GRAVITY

CLEARANCES

All units require particular clearances for proper operation and service. Installer must make provisions for adequate ventilation ai r in accordance with appli cable provisions of the local building codes. Refer to Table 6 for clearances required for combustible construction, servicing, and proper unit operation.

47 1/2"

LEFT

12 Unitary Products Group

25 1/2"

FRONT

Page 13

035-17311-002-A-0803

Do not permit overhanging structures or shrubs to obstruct condenser air discharge outlet, combustion air inlet or vent outlets.

3 0 - 1 1 / 3 2

5 0 - 3 / 4

P o w e r

E n t r y

Ø 2 - 1 / 2

C o n t r o l

E n t r y Ø 7 / 8

4 - 1 / 4

3 0 - 3 / 1 6

5 9

L E F T

2 4 - 3 / 1 6

FIGURE 8 - UNIT DIMENSIONS

TABLE 6: UNIT CLEARANCES

Top

Front

†

Rear

Units must be installed outdoors. Overhanging structure or shrubs should not obstr uct condenser air discharg e ou tlet.

†.

T o remove the slide-out drain pan, a rear clearance of sixty in ches is required. If space is unavailable, the drain pan can be removed through the fr ont by sepa rating the corner wall.

‡.

Units ma y be i nst al le d on com bu st ib le fl oo rs ma de f rom wood or cl ass A, B or C roof covering materials.

DETAIL A

72” Right 12” 36” 36”

G a s P i p e I n l e t

Bottom

Left

1 7 - 3 / 1 6

‡

6 - 3 / 1 6

36”

0”

P o w e r

E n t r y

Ø 2 - 1 / 2

C o n v e n i e n c e

P o w e r O u t l e t

E n t r y Ø 7 / 8

2 7

F o r D r a i n D i m e n s i o n s S e e D e t a i l B

8 9

F R O N T

F o r B a s e r a i l D i m e n s i o n s S e e D e t a i l

NOTE: A one-inch clearance must be provided between

any combustible material and the supply ductwork for a distance of 3 feet from the unit.

DETAIL B

3 - 3 / 4

2 - 3 / 8

3 - 9 / 1 6

DETAIL C

5 - 1 / 4

1 7 - 1 3 / 1 6

V i e w o f W a l l A c r o s s f r o m C o i l

B a s e P a n

5 - 3 / 8

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035-17311-002-A-0803

32-11/16

6-13/16

Return

Air

27-1/2

Bottom

Condensate

Entry

FRONT

63-1/2

21-3/16

19-3/16

17-3/16

LEFT

7-1/8

14-

23/32

16-3/8

18-1/16

19-5/8

FIGURE 9 - BOTTOM DUCT OPENINGS (FROM ABOVE)

Supply

Air

Bottom

Power, Control

Convenience Outlet Wiring

Entries

and

6-13/16

Bottom Gas

Supply Entry

12-15/1

1 8 - 1 / 4

5 - 5 / 3 2

FIGURE 10 - REAR DUCT DIMENSIONS

2 8 - 1 / 4

S u p p l y

A i r

D o t P l u g s

R e t u r n

A i r

1 8 - 1 / 4

P a t c h P l a t e F o r S l i d e - O u t D r a i n P a n

2 - 3 1 / 3 2

3 1 - 1 1 / 1 6

2 8 - 1 / 4

1 8 - 1 / 1 6

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035-17311-002-A-0803

DUCTWORK

Ductwork should be designed and sized according to the methods in Manual D of the Air Conditioning Contractors of America (ACCA) or as recommended by any other recognized authority such as ASHRAE or SMACNA.

A closed return duct system should be used. This will n ot preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be made wit h fl exib le joints to minim iz e noi s e.

The supply and return air duct systems should be designed for the CFM and static press ure requi rement s of the job. They should NOT be sized to match the dimensions of the duct connections on t he unit.

Refer to 9 for bottom air duct openings. Refer to Figure 10 for rear air duct openings.

8 0 - 5 / 8

2 0

DUCT COVERS

Units are shipped with the side duct openings covered and a covering over the bottom of the unit. For bottom duct application, no duct cover changes are necessary. For side duct application, remove the side duct covers and install over the bottom duct openings. The panels removed from the side duct connecti ons are designed to be reused by securing each panel to its respective downflow opening. But keep in mind that the supply panel is installed with the painted surface UP, facing the heat exchanger, while the return panel is installed with the painted surface DOWN, facing the downflow duct opening. The supply panel is secured with the bracket (already in place from the facto ry) and two screws. I t’s a snug fit for the panel when sliding it between the heat exchanger and unit bottom, but there is room. The return panel is secured with four screws .

R I G H T

I N S U L A T E D D E C K U N D E R

C O N D E N S E R S E C T I O N

S U P P L Y

2 T Y P .

3 0

5 0 - 1 / 2

R E T U R N

FIGURE 11 - PREDATOR® ROOF CURB DIMENSIONS

5 0 - 1 / 2

7 6 - 5 / 8

F R O N T

3 0 - 1 / 2

R E T U R N

9 4

2 T Y P

8 o r 1 4

I N S U L A T E D D E C K U N D E R

C O M P R E S S O R S E C T I O N

F R O N T

2 3

S U P P L Y

5 9 - 1 / 4

6 4 - 1 / 4

8 0 - 5 / 8

1 0

R I G H T

2 6

FIGURE 12 - SUNLINE™ TO PREDATOR® TRANSITION ROOF CURBS

Unitary Products Group 15

Page 16

When fastening ductwork to side duct flanges on unit, insert screws through duct flanges only. DO NOT insert screws through casing. Outdoor ductwork must be insulated and water-proofed.

FIGURE 13 - SIDE PANELS WITH HOLE PLUGS

Note orientation. Panel is “insulation” side up.

035-17311-002-A-0803

CONDENSATE DRAIN

The side condensate drain is reversible and maybe re-oriented to the rear of the cabinet to facilitate condensate piping. A condensate drain connection is available through the base pan for piping inside the roof curb. Trap the connection per Figure 16. The trap and drain lines should be protected from freezing.

Plumbing must conform to local codes. Use a sealing compound on male pipe threads. Install condensate drain line from the 3/4 inch NPT female connection on the unit to an open drain.

O P T I O N A L C O I L

G U A R D

3 " M i n i m u m

FIGURE 14 - RETURN DOWNFLOW PLENUM WITH

PANEL

FIGURE 16 - CONDENSATE DRAIN

COMPRESSORS

The comp ress ors are moun te d on e las tom er in sula tor s. T he mounting bolt s have been fully tightened fo r shi pping.

Do not loosen the compressor mounting bolts.

FILTERS

Two-inch filters are supplied with each unit. One-inch filters may be used with no modification to the filter racks. Filters must always be installed ahead of evaporator coil and must be kept clean or replaced with same size and type. Dirty filters reduce the capacity of the unit and result in frosted coils or safety shutdown. All units use four (4) 20”x25”x2” filters. The unit should not be operated without filters properly installed.

Make sure that panel latches are properly positioned

FIGURE 15 - DISCHARGE PANEL IN PLACE

on the unit to maintain an airtight seal.

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035-17311-002-A-0803

THERMOSTAT WIRING

The thermostat should be located on an inside wall approximately 56 inches above the floor where it will not be subject to drafts, sun exposure or heat from electrical fixtures or appliances. Follow the manufacturer's instructions enclosed with thermostat for general installation procedure. Seven (7) color-coded, insulated wires should be used to connect the thermostat to the unit. Refer to Table 7 for control wire sizing and maximum length.

TABLE 7: CONTROL WIRE SIZES

Wire Size

18 AWG

From the unit to the thermostat and back to the unit.

Maximu m L en gt h

150 Feet

POWER AND CONTROL WIRING

Field wiring to the unit, fuses, and disconnects must conform to provisions of National Electrical Code (NEC), ANSI/NFPA No. 70 – Latest Edition (in U.S.A.), current Canadian Electrical Code C221, and/or local ordinances. The unit must be electrically grounded in accordance with NEC and CEC as specified above and/or local codes.

Voltage tolerances which must be maintained at the compressor terminals during starting and running conditions are indicated on the unit Rating Plate and Table 1.

The internal wiring harnesses furnished with this unit are an integral part of the design certified unit. Field alteration to comply with electrical codes should not be required. If any of the wire supplied wi th the unit must be replaced, replacement wire must be of the type shown on th e wiring diagram and the same minimum gauge as the replaced wire.

A disconnect must be utilized for these units. Factory installed disconnects are available. If installing a disconnect

(field supplied or York International refer to Figure 4 for the recommended mounting location.



supplied accessory),

Avoid damage to internal components if drilling holes for disconnect mounting.

NOTE: Since not all local codes allow the m ounting of a dis-

connect on the unit, please confirm compliance with local code before mounting a disconnect on the unit.

Electrical line must be sized properly to carry the load. USE COPPER CONDUCTORS ONLY. Each unit must be wired with a separate branch circuit fed directly from the meter panel and properl y fused.

Refer to Figures 17, 18 and 19 for typical field wiring and to the appropriate unit wiring diagram mounted inside control doors for control ci rcuit and power wiring infor ma ti on.

When connecting electrical power and control wiring to the unit, water-proof connectors must be used so that water or moisture cannot be drawn into the unit during normal operation. The above water-proofing conditions will also apply when installing a field supplied disconnect switch.

POWER WIRING DETAIL

Units are factory wired for the voltage shown on the unit nameplate. Refer to Electrical Data Tables 8 through 13 size power wiring, fuses, and disconnect switch.

Power wiring is brought into the unit through the side of the unit or the basep an inside the curb.

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035-17311-002-A-0803

T H E R M O S T A T

T E R M I N A L S

R C

R H

Y 1

Y 2

W 1

W 2

X 1

X 3

X 4

A 1

A 2

E l e c t r o n i c p r o g r a m m a b l e T h e r m o s t a t 2 E T 0 7 7 0 0 1 0 0 2 4 ( i n c l u d e s s u b b a s e ) . T e r m i n a l s A 1 a n d A 2 p r o v i d e a r e l a y o u t p u t t o c l o s e t h e o u t d o o r

e c o n o m i z e r d a m p e r s w h e n t h e t h e r m o s t a t s w i t c h e s t o t h e s e t - b a c k p o s i t i o n .

T O R E M O T E S E N S O R

2 E T 0 4 7 0 1 3 2 4 I F U S E D

FIGURE 17 - ELECTRONIC THERMOSTAT FIELD WIRING

U N I T T E R M I N A L S

S T R I P T B 1

Y 1

Y 2

W 1

W 2

O C C

2 4 V o l t T r a n s f o r m e r

T - S T A T

W 1

W 2

Y 1

Y 2

R H

R C

W 1

W 2

Y 1

O C C

M I N P O S

Y 2

S D

FIGURE 18 - FIELD WIRING 24 VOLT THERMOSTAT

R E M O T E

U N I T C O N T R O L

B O A R D

18 Unitary Products Group

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035-17311-002-A-0803

RLALR

AFLA

1.5 2 1.5 2 1.5 2 1.5 2 1.5 2

ea. ea. ea. HP HP HP HP HP HP HP HP HP HP

None -- -- 20.7 21.7 22.9 23.9 25 25 25 30 2TP04520950 5.6 8.5 20.7 21.7 22.9 23.9 25 25 25 30 2TP04521850 11.3 17.2 25.3 26.6 28.1 29.3 30 30 30 30 2TP04522450 15 22.8 32.4 33.6 35.1 36.4 35 35 40 40

2TP04523650 21.3 32.4 44.3 45.6 47.1 48.3 45 50 50 50

* Maximum HACR breaker of the same AMP size is applicable.

0.0

Max

Fuse*

Size

(Amps)

Max Fuse*

Size

w/Power

Exhaust

3.1 4.1 2.2

ActualKWHeater

Amps

Min.

Circuit

Ampacity

(Amps)

380

7.1 54.0 0.8

MCA

w/Power

Exhaust

(Amps)

Pwr Exh

Motor

Pwr

Conv

Outlet

Electric Heater

Model No.

FLA FLA

Voltage

Compressors

OD Fan

Motors

Supply Blower

Motor FLA

AFLA

T E R M I N A L B L O C K T B 1

G R O U N D

L U G

F A C T O R Y O R F I E L D

S U P P L I E D D I S C O N N E C T

T H R E E P H A S E P O W E R S U P P L

FIGURE 19 - FIELD WIRING DISCONNECT TABLE 8: ELECTRICAL DATA - DM090 (7-1/2 TON) WITHOUT POWER CONVENIENCE OUTLET

TABLE 9: ELECTRICAL DATA - DM090 (7-1/2 TON) WITH POWER CONVENIENCE OUTLE T

Voltage

Unitary Products Group 19

Compressors

RLALR

ea. ea. ea. HP HP HP HP HP HP HP HP HP HP

380

7.1 54.0 0.8

Maximum HACR breaker of the same AMP size is applicable.

OD Fan

Motors

Motor FLA

Supply

Blower

1.5 2 1.5 2 1.5 2 1.5 2 1.5 2

3.1 4.1 2.2 6.3

Motor

Pwr

Pwr Exh

Conv

Outlet

FLA FLA

Electric Heater

Model No.

None -- -- 27 28 29.2 30.2 30 35 35 35 2TP04520950 5.6 8.5 27 28 29.2 30.2 30 35 35 35 2TP04521850 11.3 17.2 33.2 34.5 36 37.2 35 35 40 40 2TP04522450 15 22.8 40.2 41.5 43 44.2 45 45 45 45

2TP04523650 21.3 32.4 52.2 53.5 55 56.2 60 60 60 60

Actual

Heater

Amps

Min.

Circuit

Ampacity

(Amps)

MCA

w/Power

Exhaust

(Amps)

Fuse*

(Amps)

Max

Size

Max Fuse*

Size

w/Power

Exhaust

Page 20

035-17311-002-A-0803

AFLA

TABL E 10: ELECTRICAL DATA - DM120 (10 TON) WI THOUT POWER CONVENIENCE OUTLET

Voltage

Compressors

RLALR

ea. ea. ea. HP HP HP HP HP HP HP HP HP HP

11.5 75.0 1.6

380

* Maximum HACR breaker of the same AMP size is applicable.

OD Fan

Motors

Supply

Blower Motor

FLA

2 3 2323232 3

4.1 5.3 2.2

Pwr

Exh

Motor

FLA FLA

Pwr

Conv

Outlet

0.0

Min. Circuit

Electric Heater

Model No.

None -- -- 33.2 34.4 35.4 36.6 40 45 45 45 2TP04521850 11.3 17.2 33.2 34.4 35.4 36.6 40 45 45 45 2TP04522450 15 22.8 33.6 35.1 36.4 37.9 40 45 45 45 2TP04523650 21.3 32.4 45.6 47.1 48.3 49.8 50 50 50 50 2TP04525450 33.8 51.4 69.3 70.8 72.1 73.6 70 80 80 80

ActualKWHeater

Amps

Ampacity

(Amps)

MCA

w/Power

Exhaust

(Amps)

Fuse*

(Amps)

TABL E 11: ELECTRICAL DATA - DM120 (10 TON) WITH POWER CONVENIENCE OUTLET

Voltage

Compressors

RLALR

ea. ea. ea. HP HP HP HP HP HP HP HP HP HP

11.5 75.0 1.6 4.1 5.3 2.2 6.3

380

Maximum HACR breaker of the same AMP size is applicable.

OD Fan

Motors

Supply

Blower Motor

FLA

2 3 2323232 3

Pwr Exh

Conv

Motor

Outlet

FLA FLA

Heater

Amps

Min. Circuit

Ampacity

(Amps)

Pwr

Electric Heater

Model No.

None -- -- 39.5 40.7 41.7 42.9 50 50 50 50 2TP04521850 11.3 17.2 39.5 40.7 41.7 42.9 50 50 50 50 2TP04522450 15 22.8 41.5 43 44.2 45.7 50 50 50 50 2TP04523650 21.3 32.4 53.5 55 56.2 57.7 60 60 60 60

2TP04525450 33.8 51.4 77.2 78.7 79.9 81.4 80 80 80 90

Actual

MCA

w/Power

Exhaust

(Amps)

Fuse*

(Amps)

Max

Size

Max

Size

Max Fuse*

Size

w/Power

Exhaust

Max Fuse*

Size w/Power Exhaust

TABLE 12: ELECTRICAL DATA - DM150 (12-1/2 TON) WITHOUT POWER CONVENIENCE OUTLET

Voltage

Compressors

RLALR

ea. ea. ea. HP HP HP HP HP HP HP HP HP HP

380

9.6 79.0 1.6

* Maximum HACR breaker of the same AMP size is applicable.

OD Fan Motors

Supply

Blower

Motor FLA

3 5 3535353 5

5.3 8.1 2.2

Pwr Exh

Conv

Outlet

Motor

FLA FLA

Pwr

Min.

Electric Heater

Model No.

None -- -- 30.1 32.9 32.3 35.1 35 40 40 40

2TP04521850 11.3 17.2 30.1 32.9 32.3 35.1 35 40 40 40

0.0

2TP04522450 15 22.8 35.1 38.6 37.9 41.4 40 40 40 45 2TP04523650 21.3 32.4 47.1 50.6 49.8 53.3 50 60 50 60

2TP04525450 33.8 51.4 70.8 74.3 73.6 77.1 80 80 80 80

ActualKWHeater

Amps

Circuit

Ampacity

(Amps)

MCA

w/Power

Exhaust

(Amps)

Max

Fuse*

Size

(Amps)

TABL E 13: ELECTRICAL DATA - DM150 (12-1/2 TON) WI TH POWER CONVENIENCE OUTLET

Voltage

380

Compressors

RLALRAFL

ea. ea. ea. HP HP HP HP HP HP HP HP HP HP

9.6 79.0 1.6 5.3 8.1 2.2 6.3

Maximum HACR breaker of the same AMP size is applicable.

OD Fan

Motors

Supply

Blower Motor

FLA

3 5 35353535

Pwr Exh

Conv

Motor

Outlet

FLA FLA

Pwr

Electric Heater

Model No.

None -- -- 36.4 39.2 38.6 41.4 45 45 45 50 2TP04521850 11.3 17.2 36.4 39.5 38.7 42.2 45 45 45 50 2TP04522450 15 22.8 43 46.5 45.7 49.2 45 50 50 50 2TP04523650 21.3 32.4 55 58.5 57.7 61.2 60 60 60 70

2TP04525450 33.8 51.4 78.7 82.2 81.4 84.9 80 90 90 90

Actual

Heater

Amps

Min. Circuit

Ampacity

(Amps)

MCA

w/Power

Exhaust

(Amps)

Max

Fuse*

Size

(Amps)

Max Fuse*

Size w/Power Exhaust

Max Fuse*

Size

w/Power Exhaust

20 Unitary Products Group

Page 21

035-17311-002-A-0803

TABLE 14: PHYSICAL DATA

Evaporator

Blower

Evaporator

Coil

Condenser

Fan

(2 per Unit)

Condenser

Coil

(2 per unit)

Refrigerant

Charge

Compressors

Air Filters

Component

Models

090 120 150

Blower, Centrifuga l (Dia. X Wd. in.) 15 x 15 15 x 15 15 x 15

Motor, Stan dard (HP) 1-1/2 2 3

Motor, Optional (HP) 2 3 5

Rows 2 2 3

Fins per Inch 15 15 15

Height (in.) 32 40 40

Face Area (ft.

Propeller Dia. (in., each) 24 24 24

Motor (HP, each) 1/3 3/4 3/4

CFM, Nominal (each) 3400 4400 4400

Rows (each) 1 1 2

Fins per Inch 20 20 20

Height (in. each) 28 44 44

Face Area (ft.

System 1 (lb./o z. ) 4/12 6/12 10/12 System 2 (lb./oz.) 4/6 6/12 9/8

Quantity 222

Size (Wd. x Ht. x Thickness in.) 25x20x2 25x20x2 25x20x2

Number Per Unit 4 4 4

each)

Type Recip Recip Recip

10.6 13.2 13.2

9.2 14.5 14.5

OPTIONS/ACCESSORIES

ELECTRIC HEAT ACCESSORIES

Electric heaters are available as field installed accessories. Refer to electric heat instructions for installation. These heaters mount in the he at compartment with the heating elements extending into the supply air chamber. All electric heaters are fused and intended for use with single point power supply.

ELECTRIC HEAT OPTION

The factory-installed heaters are wired for single point power supply. Power supply need only be brought into the single point termin al bl ock.

These CSA approved heaters are located within the central compartment of the unit with the heater elements extending into the supply air chamber.

Fuses are suppli ed, where required, by the factory . Some kW sizes require fuses and other do not. Refer to Table 15 for minimum CFM lim itations and to Tables 8 t hrough 13 for el ectrical data.

TABLE 15: MINIMUM SUPPLY AIR CFM

Heater Unit Model Size, Nominal Tons

kW Voltage

18 2250 3000 3750 24 2250 3000 3750 36 2250 3000 3750 54 N/A 3000 3750

380

MOTORIZED OUTDOOR DAMPER

The Motorized Outdoor Damper can be a factory installed option or a field installed accessory. If factory installed, refer to the instructions included with the outdoor air hood to complete the assembly. Field installed Motorized Outdoor Damper accessories include complete instructions for installation.

7.5 10 12.5 Minimum Supply Air CFM

2250 N/A N/A

Unitary Products Group 21

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035-17311-002-A-0803

ECONOMIZER

The Economizer can be a factory installed option or a field installed accessory. If factory installed, refer to the instructions included with the outdoor air hood to complete the assembly. Field installed Economizer accessories include complete instructions for installation.

There are two Economizer options:

1. Down Flow application with barometric relief hood standard.

2. Horizontal Flo w application that requires the purchase of a barometric relief hood.

POWER EXHAUST

The Power Exhaust can be a factory installed option or a field installed accessory. If factory installed, refer to the instructions included with the outdoor air hood to complete the assembly. Field installed Power Exhaust accessories include complete instructions for installation.

The Power Exhaust factory installed option is for Down Flow application only.

There are two field in stalled Power Exhaust accessories:

1. Down Flow application.

2. Horizontal Flo w application that requires the purchase of a barometric relief hood.

RAIN HOOD

All of the hood components, including the filters, the gasketing and the hardware for assembling, are packaged and located between the condenser coil section and the main unit cabinet, if the unit has factory installed options. If field installed accessories are being installed all parts necessary for the installation comes in the accessory .

ON position and then OFF or energize and de-energize termi na ls “R ” to “G”.

• With the thermostat set to the indoor fan ON position or terminals “R” to “G” ener gized, turn the Minimum Position Adjusting scr ew (l ocated on the damper control module) counterclockwise until the desired mini m um damper position has been attained.

ENTHALPY SET POINT ADJUSTMENT

The enthalpy set point may now be set by selecting the desired set point shown in the Enthalpy Set Point Adjustment Figure 20. Adjust as follows:

• For a single enthalpy operation carefully turn the set point adjusting screw (found on the damper control mod ule) to the "A", "B", "C" or "D" setting corresponding to the lettered curve of the Enthalpy Set Point Adjustment Figure 20.

• For a dual enthal py operati on, car efull y turn the set point adjusting screw fully clockwise past the "D" setting.

POWER EXHAUST DAMPER SET POINT (WITH OR WITHOUT POWER EXHAUST)

• With no power exhaust option, adjust the Exhaust Air Adjustment Screw fully clockwise. This will allow 2nd stage cooling to operate.

• With power exh aust option, each buildi ng pressurization requirement will be different. The point at which the power exhaust comes on is dete rmined by the economizer damper position (Percent Open). The Exhaust Air Adjustment Screw should be set at the Percent Open of the economizer damper at which the power exhaust is needed. It can be set from 0 to 100% dampe r open.

INDOOR AIR QUALITY AQ

ECONOMIZER AND POWER EXHAUST SET POINT ADJUSTMENTS AND INFORMATION

Remove the top rear access panel from the unit. Locate the economizer control module, where the following adjustments will be made.

Indoor Air Quality (indoor sensor input): Terminal AQ accepts a +2 to +10 Vdc signal with respect to the (AQ1) terminal. When the signal is below it's set point, the act uator is allowed to modulate normally in accordance with the enthalpy and mixed air sensor inputs. When the AQ signal exceeds it's set point setting and there is no call for free cooling, the actuator is proportionat ely modulated from the 2 to 10 Vdc signal, with 2 Vdc corresponding to full closed and 10 Vdc corresponding to full open. When there is no call for free coolin g, the damper

position is limited by the IAQ Max damper position setting. Extreme care must be exercised in turning all set point, maximum and minimum damper positioning adjustment screws to prevent twisting them off.

When the signal exceeds it's set point (Demand Control Ven-

tilation Set Point) setting and there is a call for free cooling,

the actuator modulates from the minimum position to the full

open position based on the highest call from either the mixed

MINIMUM POSITION ADJUSTMENT

• Check that the damper blades move smoothly wi thout binding; care fully turn the Minimum Position Adjust screw (found on the damper control module) fully clockwise and then set the t hermostat indoor fan switch t o the

air sensor input or the AQ voltage input.

• Optional CO

Space Sensor Kit Part # 2AQ04700324

Sensor Kit Part # 2AQ04700424

Replace the top rear access panel on the unit.

22 Unitary Products Group

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035-17311-002-A-0803

CONTROL

CURVE

CONTROL POINT

APPROX.

F (0C)

AT 50% RH

73 (23)

70 (21) 67 (19)

63 (17)

(7)

40 (4)

35 (2)

(10)

110

100

(13)

(16)

(29)

(32)

(27)

(24)

(21)

(18)

(35)

(38)

105 (41)

(43)

(2)

(4)45(7)

APPROXIMATE DRY BULB TEMPERATURE - 0F (0C)

FIGURE 20 - ENTHALPY SET POINT CHART

Exhaust Air Adjustment

Screw

Exhaust Air LED

Damper Min.

Position

Screw

Indoor Air Quality

Max. Adjustment

Screw

Indoor Air Quality

LED

Indoor Air Quality

Min. Adjustment

Screw

Free Cooling LED

Economizer Enthalpy Set Point Adjustment

Screw

SO+ SO

(10)55(13)

AQ1 AQ

SR+

(21)

(16)

(18)

EXH

Set

EXH

Min Pos

IAQ Max

IAQ

IAQ Min

Free Cool

(24)80(27)

105

(29)

(32)

100 (38)

(35)

TR TR1

Vac

HOT

(41)

Vac

COM

110 (43)

EF EF1

FIGURE 21 - HONEYWELL ECONOMIZER CONTROL W7212

Unitary Products Group 23

Page 24

PHASING

Predator® units are properly phased at the factory. Check for proper compressor rotation. If the blower or compressors rotate in the wrong direction at st art-up, the electr ical connection to the unit is misphased. Change the phasing of the Field

Line Connection at the factory or field supplied disconnect to obtain proper rotation. (Scroll compressors operate in

only one direction. If the scroll is drawing low amperage, has similar suction and discharge pressures, or producing a high noise level, the scroll is misphased.)

Scroll compressors require proper rotation to operate correctly. Units are properly phased at the factory. Do not change the internal wiring to make the blower condenser fans, or compressor rotate correctly.

035-17311-002-A-0803

* NEVER LOOSEN

SPAN LENGTH

DEFL. FORCE

BLOWER ROTATION

Check for proper supply air blower rotation. If the blower is rotating backwards, the line voltage at the unit point of power connection is misphased (See ‘PHASING’).

TABLE 16: SUPPLY AIR LIMITATIONS

Unit Size Minimum Maximum

090 120 3000 5000 150 3750 6250

2250 3750

BELT TENSION

The tension on the belt should be adjusted as shown in Figure 22.

FIGURE 22 - BELT ADJUSTMENT

Procedure for adjusting belt tension:

1. Loosen six nuts (top and bottom) A.

2. Adjust by turning (B).

3. Ne ver loosen nuts (C).

4. Use belt tension checker to apply a perpendicular force to one belt at the mid point of the span as shown. Deflection distance of 4mm (5/32”) is obtained.

To determine the deflection distance from normal position, use a straight edge from sheave to sheave as reference line. The recommended deflection force is as fo llo w s :

Tension new belts at the max. deflection force recommended for the belt section. Check the belt tension at least two times during the first 24 hours of operation. Any retensioning should fall between the min. and max. deflection force values.

5. After adjusting retighten nuts (A).

24 Unitary Products Group

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035-17311-002-A-0803

††

†

BHP CFM

††

TABLE 17: 7-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

0.2

TURNS OPEN

‡

CFM

012345

††

BHP CFM

- - - 3715 1573 1.69 3634 1434 1.54 3431 1265 1.36 3218 901 0.97 3024 976 1.05

††

BHP CFM

††

BHP CFM

0.4 3650 1657 1.78 3510 1490 1.60 3320 1313 1.41 3079 1145 1.23 2832 810 0.87 2586 860 0.92

0.6 3334 1522 1.63 3146 1351 1.45 2910 1169 1.25 2621 1005 1.08 2307 706 0.76 - - -

0.8 2903 1352 1.45 2622 1167 1.25 2404 1013 1.09 2054 858 0.92 - - - - - -

1.0 2356 1159 1.24 - - - - - - - - - - - - - - -

Blowe r performance for gas heat includes maximum number of heat tubes available for each tonnage.

†.

Blowe r performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**.

“Tur ns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.

W = Watts

††

†

BHP CFM

††

TABLE 18: 7-1/2 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

0.2

0.4

TURNS OPEN

‡

CFM

012345

††

BHP CFM

- - - - - - - - - - - - 3992 1904 2.04 3798 1679 1.80

- - - - - - - - - 3930 2017 2.16 3734 1786 1.92 3486 1552 1.66

††

BHP CFM

††

BHP CFM

0.6 - - - - - - 3947 2176 2.33 3670 1895 2.03 3394 1641 1.76 3084 1401 1.50

0.8

- - - 4138 2384 2.56 3623 2009 2.15 3323 1742 1.87 2971 1477 1.58 2591 1236 1.33

1.0 4126 2430 2.61 3643 2145 2.30 3224 1820 1.95 2889 1569 1.68 2466 1306 1.40 - - -

3613 2238 2.40 3143 1921 2.06 2748 1621 1.74 2369 1385 1.49 - - - - - -

1.2

1.4 3099 2039 2.19 2636 1714 1.84 2195 1424 1.53 - - - - - - - - -

258618331.97---------------

1.6

Blowe r performance for gas heat includes maximum number of heat tubes available for each tonnage.

†.

Blowe r performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**.

“Tur ns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.

W = Watts

BHP

Unitary Products Group 25

Page 26

035-17311-002-A-0803

TABLE 19: 10 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

0.2

TURNS OPEN

‡

CFM

012345

††

BHP CFM

- - - - - - - - - 3896 1639 1.76 3688 1453 1.56 3447 1268 1.36

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

0.4 4040 2076 2.23 4005 1934 2.07 3790 1698 1.82 3569 1508 1.62 3333 1330 1.43 3057 1147 1.23

0.6 3890 2006 2.15 3697 1790 1.92 3427 1550 1.66 3152 1356 1.45 - - - - - -

0.8 3620 1882 2.02 3324 1629 1.75 2972 1380 1.48 - - - - - - - - -

1.0 3227 1708 1.83 - - - - - - - - - - - - - - -

Blower performance for gas h eat includes maximum number of heat tubes available for each to nnage.

†.

Blower performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have be en deduct ed from the total static pressure of the blower.

**.

“Turns Open” refe rs to the setti ng of the varia bl e pit ch mot or sh eave , whe r e “0 Turns Open” is fu lly close d .

††.

W = Watts

TABLE 20: 10 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE*

TURNS OPEN

‡

ESP

CFM

4965 3485 3.74 4875 3150 3.38 4613 2739 2.94 4322 2374 2.55 4156 2106 2.26 3907 1860 1.99

0.4

012345

††

BHP CFM

††

BHP CFM

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

0.6 4876 3416 3.66 4651 2997 3.21 4359 2582 2.77 4038 2220 2.38 3860 1966 2.11 3590 1724 1.85

4713 3291 3.53 4387 2823 3.03 4077 2417 2.59 3719 2059 2.21 3541 1827 1.96 3242 1584 1.70

0.8

1.0 4476 3116 3.34 4084 2632 2.82 3768 2245 2.41 3365 1892 2.03 3197 1691 1.81 - - -

4165 2898 3.11 3741 2427 2.60 3432 2070 2.22 - - - - - - - - -

1.2

1.4 3779 2646 2.84 3359 2212 2.37 3069 1895 2.03 - - - - - - - - -

3319 2372 2.54 - - - - - - - - - - - - - - -

1.6

Blower performance for gas h eat includes maximum number of heat tubes available for each to nnage.

†.

Blower performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have be en deduct ed from the total static pressure of the blower.

**.

“Turns Open” refe rs to the setti ng of the varia bl e pit ch mot or sh eave , whe r e “0 Turns Open” is fu lly close d .

††.

W = Watts

BHP

26 Unitary Products Group

Page 27

035-17311-002-A-0803

††

†

BHP CFM

††

BHP

TABLE 21: 12-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE*

TURNS OPEN

‡

ESP

CFM

0.4

5078 3630 3.89 4809 3103 3.33 4594 3053 3.27 4360 2478 2.66 4090 2093 2.24 3812 1798 1.93

012345

††

BHP CFM

††

BHP CFM

††

BHP CFM

††

BHP CFM

0.6 4865 3456 3.71 4584 2961 3.17 4349 2912 3.12 4106 2318 2.49 3814 1964 2.11 - - -

0.8 4642 3284 3.52 4356 2828 3.03 4089 2776 2.98 3840 2137 2.29 - - - - - -

1.0 4408 3114 3.34 4124 2705 2.90 3815 2647 2.84 - - - - - - - - -

1.2 4164 2947 3.16 3889 2592 2.78 - - - - - - - - - - - -

1.4 391027872.99---------------

Blowe r performance for gas heat includes maximum number of heat tubes available for each tonnage.

†.

Blowe r performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**.

“Tur ns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.

W = Watts

††

†

BHP CFM

††

BHP

TABLE 22: 12-1/2 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE*

TURNS OPEN

‡

ESP

CFM

5994 5400 5.79 5565 4369 4.69 5488 4169 4.47 5264 3599 3.86 4990 3085 3.31 4738 2812 3.02

0.4

012345

††

BHP CFM

††

BHP CFM

††

BHP CFM

††

BHP CFM

0.6 5824 5216 5.59 5368 4186 4.49 5289 3991 4.28 5049 3437 3.69 4763 2937 3.15 4491 2655 2.85

5641 5022 5.39 5170 4012 4.30 5076 3807 4.08 4822 3272 3.51 4528 2790 2.99 4235 2497 2.68

0.8

1.0 5444 4819 5.17 4971 3846 4.12 4847 3618 3.88 4584 3103 3.33 4286 2644 2.83 3969 2340 2.51

5233 4609 4.94 4771 3687 3.95 4604 3426 3.67 4335 2933 3.15 4035 2499 2.68 - - -

1.2

1.4 5009 4394 4.71 4571 3537 3.79 4346 3233 3.47 4074 2762 2.96 3777 2356 2.53 - - -

4771 4174 4.48 4370 3395 3.64 4074 3040 3.26 3802 2590 2.78 - - - - - -

1.6

1.8 4520 3951 4.24 4169 3262 3.50 3786 2850 3.06 - - - - - - - - -

4255 3728 4.00 3966 3137 3.36 - - - - - - - - - - - -

2.0

2.2 3976 3505 3.76 3763 3020 3.24 - - - - - - - - - - - -

Blowe r performance for gas heat includes maximum number of heat tubes available for each tonnage.

†.

Blowe r performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**.

“Tur ns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.

W = Watts

Unitary Products Group 27

Page 28

035-17311-002-A-0803

TABLE 23: 7-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

0.4

TURNS OPEN

‡

CFM

012345

††

BHP CFM

- - - - - - 3736 1476 1.58 3487 1284 1.38 3231 1109 1.19 3001 970 1.04

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

BHP

0.6 - - - 3572 1514 1.62 3389 1339 1.44 3094 1151 1.23 2764 972 1.04 2446 824 0.88

0.8 3422 1558 1.67 3179 1364 1.46 2889 1164 1.25 2554 985 1.06 - - - - - -

1.0 2891 1347 1.44 2372 1088 1.17 2050 922 0.99 - - - - - - - - -

1.2 2017 1051 1.13 - - - - - - - - - - - - - - -

Blower performance for gas h eat includes maximum number of heat tubes available for each to nnage.

†.

Blower performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deduct ed from the total static pressure of the blower.

**.

“Turns Open” refe rs to the setti ng of the varia bl e pit ch mot or sh eave , whe r e “0 Turns Open” is fu lly close d .

††.

W = Watts

TABLE 24: 7-1/2 TON OPTIONAL MOTOR SIDE SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

0.4

TURNS OPEN

‡

CFM

012345

††

BHP CFM

- - - - - - - - - - - - - - - 3910 1726 1.85

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

BHP

0.6 - - - - - - - - - - - - 3857 1842 1.98 3597 1430 1.53

0.8

- - - - - - - - - 3804 1957 2.10 3503 1689 1.81 3172 1430 1.53

1.0 - - - - - - 3774 2088 2.24 3406 1778 1.91 3032 1497 1.61 2248 1143 1.23

1.2

- - - - - - 3327 1866 2.00 2926 1578 1.69 2160 1217 1.31 - - -

1.4 - - - 3270 1971 2.11 2537 1544 1.66 2043 1296 1.39 - - - - - -

3196 2077 2.23 2460 1651 1.77 - - - - - - - - - - - -

1.6

1.8 242617681.90---------------

Blower performance for gas h eat includes maximum number of heat tubes available for each to nnage.

†.

Blower performance includes two-inch throwaway filters.

‡.

ESP (Exte rna l S t a tic P res sur e ) giv en is that av ai la ble f or the su pp ly a nd ret u rn ai r duct sys t em. Al l int er nal r es is tan ce s ha ve be en deduct ed from the total static pressure of the blower.

**.

“Turns Open” refe rs to the setti ng of the varia bl e pit ch mot or sh eave , whe r e “0 Turns Open” is fu lly close d .

††.

W = Watts

28 Unitary Products Group

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035-17311-002-A-0803

TABLE 25: 10 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

0.2

TURNS OPEN

‡

CFM

012345

††

BHP CFM

- - - - - - - - - 3896 1639 1.76 3688 1453 1.56 3447 1268 1.36

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

BHP

0.4 4040 2076 2.23 4005 1934 2.07 3790 1698 1.82 3569 1508 1.62 3333 1330 1.43 3057 1147 1.23

0.6 3890 2006 2.15 3697 1790 1.92 3427 1550 1.66 3152 1356 1.45 - - - - - -

0.8 3620 1882 2.02 3324 1629 1.75 2972 1380 1.48 - - - - - - - - -

1.0 322717081.83---------------

Blowe r performance for gas heat includes maximum number of heat tubes available for each tonnage.

†.

Blowe r performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**.

“Tur ns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.

W = Watts

TABLE 26: 10 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE*

TURNS OPEN

‡

ESP

CFM

0.4

4965 3485 3.74 4875 3150 3.38 4613 2739 2.94 4322 2374 2.55 4156 2106 2.26 3907 1860 1.99 4876 3416 3.66 4651 2997 3.21 4359 2582 2.77 4038 2220 2.38 3860 1966 2.11 3590 1724 1.85

0.6

012345

††

BHP CFM

††

BHP CFM

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

BHP

0.8 4713 3291 3.53 4387 2823 3.03 4077 2417 2.59 3719 2059 2.21 3541 1827 1.96 3242 1584 1.70

4476 3116 3.34 4084 2632 2.82 3768 2245 2.41 3365 1892 2.03 3197 1691 1.81 - - -

1.0

1.2 4165 2898 3.11 3741 2427 2.60 3432 2070 2.22 - - - - - - - - -

3779 2646 2.84 3359 2212 2.37 3069 1895 2.03 - - - - - - - - -

1.4

1.6 331923722.54---------------

Blowe r performance for gas heat includes maximum number of heat tubes available for each tonnage.

†.

Blowe r performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.

**.

“Tur ns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.

††.

W = Watts

Unitary Products Group 29

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035-17311-002-A-0803

††

†

BHP CFM

††

BHP

---

TABLE 27: 12-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE*

TURNS OPEN

‡

ESP

CFM

0.4

0.6

0.8

5003 3490 3.74 4647 2988 3.20 4380 2636 2.83 4030 2257 2.42

1.0

4724 3290 3.53 4363 2875 3.08 4012 2505 2.69

1.2

4428 3040 3.26

1.4

Blower performance for gas h eat includes maximum number of heat tubes available for each to nnage.

†.

Blower performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have be en

012345

††

BHP CFM

------

---

5220 3395 3.64 4942 2980 3.20 4657 2608 2.80 4358 2230 2.39 4007 1890 2.03 4944 3194 3.43 4661 2806 3.01 4378 2572 2.76 4016 2057 2.21

††

BHP CFM

††

BHP CFM

5201 3162 3.39 4966 2796 3.00 4681 2405 2.58 4355 2054 2.20

---------------

††

BHP CFM

------

---------

deduct ed from the total static pressure of the blower.

**.

“Turns Open” refe rs to the setti ng of the varia bl e pit ch mot or sh eave , whe r e “0 Turns Open” is fu lly close d .

††.

W = Watts

TABLE 28: 12-1/2 TON OPTIONAL MOTOR SIDE SHOT BLOWER PERFORMANCE*

††

BHP CFM

ESP

TURNS OPEN

‡

CFM

01 2 345

††

BHP CFM

††

BHP CFM

††

BHP CFM

†

††

BHP CFM

††

BHP

0.4 - - - 6447 5315 5.70 6207 4760 5.1046 5966 4205 4.51 5717 3716 3.98 5470 3307 3.55

0.6 - - - 6110 4917 5.27 5965 4464 4.79 5740 4023 4.31 5430 3501 3.75 5126 3054 3.28

0.8 - - - 5772 4519 4.85 5741 4274 4.58 5503 3821 4.10 5162 3294 3.53 4849 2870 3.08

1.0 6235 5521 5.92 5628 4407 4.73 5474 4048 4.34 5244 3611 3.87 4882 3101 3.33 4530 2667 2.86

1.2 5881 5137 5.51 5384 4205 4.51 5248 3854 4.13 4941 3387 3.63 4589 2906 3.12 4225 2502 2.68

1.4 5695 4950 5.31 5123 3996 4.29 5014 3670 3.94 4651 3178 3.41 4284 2716 2.91 3858 2280 2.45

1.6 5471 4728 5.07 4919 3828 4.11 4732 3460 3.71 4365 2983 3.20 3951 2516 2.70 3491 2058 2.21

1.8 5242 4514 4.84 4656 3611 3.87 4438 3240 3.47 3998 2740 2.94 3618 2316 2.48 - - -

2.0 4954 4231 4.54 4339 3380 3.62 3905 2861 3.07 3631 2497 2.68 - - - - - -

2.2 4585 3934 4.22 4022 3149 3.38 - - - - - - - - - - - -

2.4 421736373.90----- - ---------

2.6 384833403.58----- - ---------

Blower performance for gas h eat includes maximum number of heat tubes available for each to nnage.

†.

Blower performance includes two-inch throwaway filters.

‡.

ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have be en deduct ed from the total static pressure of the blower.

**.

“Turns Open” refe rs to the setti ng of the varia bl e pit ch mot or sh eave , whe r e “0 Turns Open” is fu lly close d .

††.

W = Watts

NOTES FOR TABLE 17 THROUGH TABLE 28:

• Blower performance includes dry coil and two-inch filters.

• Blower performance for gas heat includes the maximum number of heat tubes available for each tonnage.

• ESP (Ext ernal Static Pressure) gi ven is that available for the supply and return air duct system. All internal resistances have b een de duct ed fro m the tot al st ati c pressu re of the blower.

30 Unitary Products Group

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TABLE 29: INDOOR BLOWER SPECIFICATIONS

MODEL

DM090

DM120

DM150

HP R PM Eff. SF Fram e Datum Dia. (in.) B ore (in. ) Model Datum Dia. (in. ) Bore (in.) Model

1-1/2 1725 80% 1.15 56 3.4 - 4.4 7/8 1VM50 9.0 1 AK94 A57

2 1725 80% 1.15 56 3.4 - 4.4 7/8 1VM50 7.5 1 AK79 A55 2 1725 80% 1.15 56 3.4 - 4.4 7/8 1VM50 8.5 1 AK89 A56 3 1725 80% 1.15 56 3.4 - 4.4 7/8 1VM50 7.0 1 AK74 A54 3 1725 80% 1.15 56 3.4 - 4.4 7/8 1VM50 7.0 1 AK74 A54 5 172 5 87% 1.15 184T 4.3 - 5.3 1 1/8 1VP56 6.7 1 BK77 BX55

MOTOR MOTOR SHEAVE BLOWER SHEAVE

BELT

AIR BALANCE

Start the supply air blower motor. Adjust the resistances in both the supply and the return air duct systems to balance the air distribution throughout the conditioned space. The job specifications m ay require that this balanci ng be done by someone other than the equipment installer .

CHECKING AIR QUANTITY

METHOD ONE

1. Remove the dot plugs from the d uct pa nel (for loca tion of the dot plugs see Figure 10).

2. Insert eight-inches of 1/4 inch metal tubing into the airflow on both sides of the indoor coil.

NOTE: The tubes must be inserted and held in a position

perpendicular to the air flow so that velocity pressure will not af fect the static pressu re readings.

3. Use an Inclined Manometer or Magnehelic to det ermine the pressure dro p across a dry evaporat or coi l. Si nce the moisture on an evaporator coil can vary greatly, measuring the pressure drop across a wet coil under field conditions could be inaccu rate. To assure a dry coil, the compressors shou ld be de- activated while the test is being run.

NOTE: De-energize the compressors bef ore taking any test

measurement s to assure a dry evaporator coil .

4. The CFM through the unit can be determined from the pressure drop indicat ed by the manometer by ref erring to Figure 23. In order to obtain an accurate measurement, be certain that the air filters are clean.

5. To adj ust Measured CFM to Required CFM, see ’SUPPLY AIR DRIVE ADJUSTMENT’.

6. After readings have been obtained, remove the tubes and replace the dot plugs.

METHOD TWO

1. Drill two 5/16 inc h hole s, one in the return air duct as close to the inlet of the uni t as possible, and another in the supply air duct as close to the outlet of the unit as possible.

2. Using the whole drilled in step 1, insert eight inches of 1/4 inch metal tubing into the airflow of the return and supply air ducts of the unit.

NOTE: The tubes m ust be inserted and held in position per-

pendicular to the airflow so that velocity pressure will not affect the st atic pressure rea dings.

3. Use an Inclined Manometer or Magnehelic to determine the pressure drop across the unit. This is the External Static Pressure (ESP). In order to obtain an accurate measurement, be cert ain that the air filter s are clean.

4. Determine the number of turns the variable motor sheave is open.

5. Select the correct blower performance table for the unit from Tables 17 - 28. T ables are presented for hori zontal and downflow configuration.

6. Determine the unit Measured CFM from the Blower Performance Table, External Static Pressure and the number of turns the variable motor sheave is open.

7. To adj ust Measured CFM to Required CFM, see ’SUPPL Y AIR DRIVE ADJUSTMENT’.

8. After reading has been obtained, remove the tubes and seal holes.

NOTE: With the addition of field installed accessories

repeat this procedure.

Failure to properly adjust the total system air quantity can result i n extensive blower damage.

Failure to properly adjust the total system air quantity can result in extensive blower damage.

Unitary Products Group 31

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035-17311-002-A-0803

FIGURE 23 - DRY COIL DELTA P

SUPPLY AIR DRIVE ADJUSTMENT

Before making any blower speed changes review the installation for any installation errors, leaks or undesirable systems effects that can result in loss of airflow.

Even small changes in blower speed can result in substantial changes in static pressure and BHP. BHP and AMP draw of the blower motor will increase by the cube of the blower speed. Static pressure will increase by the square of the blower speed. Only qualified personnel should make blower speed changes, strictly adhering to the fan l aws.

At unit start-up, the measured CFM may be higher or lower than the required CFM. To achieve the required CFM, the speed of the drive may have adjusted by changing the datum diameter (DD) of the variable pitch motor sheave as described below:

EXAMPLE A 12.5 ton unit was selected to deliver 4,000 CFM with a 3

HP motor, but the unit is delivering 3,800 CFM. The variable pitch motor sheave is set at 2 turns open.

Use the equation to determine the required DD for the new motor sheave,

4,000 CFM

(

3,800 CFM

Use Table 31 to locate the DD nearest to 4.21 in. Close the sheave to 1 turn open.

New BHP

= (Speed increase) • BHP at 3,800 CFM

= (Spee d inc rease) • Original BHP

= New BHP

• 4.0 in. = 4.21 in.

)

Required CFM

(

Measured CFM

Use the following tables and the DD calculated per the above equation to adjust the motor variable pitch she ave.

32 Unitary Products Group

• Existing DD = New DD

)

New motor Amps = (Spee d inc rease) • Amps at 3,800 CFM

= (Spee d inc rease) • Original Amps = New Amps

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035-17311-002-A-0803

TABLE 30: ADDITIONAL STATIC RESISTANCE

CFM

Cooling Only

Economizer†

‡

Electric Heat KW

9 18243654

2300 0.08 0.02 0.07 0.08 0.09 0.10 0.13 2500 0.09 0.02 0.08 0.09 0.10 0.11 0.14 2700 0.11 0.03 0.09 0.10 0.12 0.13 0.16 2900 0.12 0.03 0.10 0.11 0.13 0.14 0.18 3100 0.14 0.03 0.12 0.13 0.15 0.16 0.20 3300 0.16 0.03 0.13 0.14 0.17 0.18 0.22 3500 0.18 0.04 0.15 0.16 0.19 0.20 0.24 3700 0.20 0.04 0.17 0.18 0.21 0.22 0.26 3900 0.23 0.04 0.19 0.20 0.23 0.24 0.28 4100 0.25 0.04 0.21 0.22 0.25 0.26 0.31 4300 0.28 0.05 0.23 0.24 0.28 0.29 0.34 4500 0.30 0.05 0.25 0.26 0.30 0.31 0.37 4700 0.33 0.05 0.28 0.29 0.33 0.34 0.40 4900 0.36 0.05 0.30 0.31 0.35 0.37 0.43 5100 0.39 0.06 0.33 0.34 0.38 0.40 0.46 5300 0.42 0.06 0.35 0.37 0.41 0.43 0.49 5500 0.45 0.06 0.38 0.40 0.44 0.46 0.53 5700 0.48 0.06 0.41 0.43 0.47 0.49 0.56 5900 0.52 0.07 0.44 0.46 0.50 0.53 0.59 6100 0.56 0.07 0.47 0.49 0.53 0.56 0.62 6300 0.60 0.07 0.50 0.53 0.56 0.59 0.65

Add these resistance values to the available static resistance in the respective Blower Performance Tables.

†.

Deduct these resi stance values fro m the avail able external static pressure shown in the respective Blo wer Perfor mance Table.

‡.

The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.

†

TABLE 31: MOTOR SHEAVE DATUM DIAMETERS

1VM50x7/8

(1-1/2, 2 & 3 HP Motor)

Turns Open

0 4.4 1 5.3

1/2 4.3 1-1/2 5.2

1 4.2 2 5.1

1-1/2 4.1 2-1/2 5.0

2 4.0 3 4.9

2-1/2 3.9 3-1/2 4.8

3 3.8 4 4.7

3-1/2 3.7 4-1/2 4.6

4 3.6 5 4.5

4-1/2 3.5 5-1/2 4.4

5 3.4 6 4.3

Datum

Diameter

1VP56x1-1/8 (5 HP Motor)

Turns Open

Datum

Diameter

OPERATION

SEQUENCE OF OPERATIONS OVERVIEW

For the Predator® series of units, the the rmostat makes a circuit between "R" and "Y1" for the first stage of cooli ng.

The call is passed to the Unit Control Board (UCB), which then determines whet her the requested operation is available and, if so, which components to energize.

When the "W1" call is sensed, the indoor air blower is energized following a speci fied heating delay.

If at any time a call for both heating and cooling are present, the heating operation will be performed. If operating, the cooling system is halted as with a completion of a call for cooling. Heating always takes priority.

Unitary Products Group 33

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035-17311-002-A-0803

COOLING SEQUENCE OF OPERATION

CONTINUOUS BLOWER

By setting the room thermost at fan switch to "ON," the suppl y air blower will operate continuously.

INTERMITTENT BLOWER

With the room thermostat fan switch set to "AUTO" and the system switch set to either the "AUTO" or "HEAT" settings, the blower is energiz ed whenever a cooling or heating operation is requested. The blower is energized after any specified delay associated with the operation.

When energized, the indoor blower has a minimum run time of 30 seconds. Additionally, the indoor blower has a delay of 10 seconds between operati ons.

NO OUTDOOR AIR OPTIONS

When the thermostat calls for the first stage of cooling, the low-voltage control circuit from “R” to “Y1” and “G” is completed. The UCB energizes the economizer (if installed and

free cooling is available) or the first available compressor and the condenser fans. For first stage cooling, compressor #1 is energized. If compressor #1 is unavailable, compressor #2 is energized. After completing the specified fan on delay for cooling, the UCB will energize the blower motor.

pleted. The UCB energizes the blower motor (if the fan switch on the room thermostat is set in the "AUTO" position) and drives the economizer dampers from fully closed to their minimum position. If the enthalpy of the outdoor air is below the set point of the enthalpy controller (previously determined), "Y1" energizes the economizer. The dampers will m odulate to maintain a constant supply air temperature as monitored by the discharge air sensor. If the outdoor air enthalpy is above the set point, "Y1" energizes compressor #1.

When the therm ostat calls for " second-stage" cooling, the low voltage control circuit from "R" to "Y2" is completed. The UCB energizes th e first availabl e compressor. If the ent halpy of the outdoor air is below the set point of the enthalpy controller (i.e. first stage has energized the economizer), "Y2" will energize compressor #1. If the outdoor air is above the set point, "Y2" will energize com pressor #2.

Once the thermostat has been satisfied, it will de-energize “Y1” and “Y2”. If the compressors have satisfied their minimum run times, the compressors and condenser f ans are deenergized. Otherwise, the unit operates each cooling system until the minimum run times for the compressors have been completed. Upon the final compressor de-energizing, the

blower is stopped following the elapse of the fan off delay for cooling, and the eco nomizer damper goes to the closed position. If the unit is in continues fan operation, the economizer damper goes to the minimum position.

When the thermostat calls for the second stage of cooling, the low-voltage control circuit from “R” to “Y2” is completed. The control board energizes the first available compressor. If free cooling is being used for the first stage of cooling, compressor #1 is energized. If compressor #1 is active for first stage cooling or the first compressor is locked-out, compressor #2 is energized. In free-cooling mode, if the call for the second stage of cooling continues for 20 minutes, compressor #2 is energized, provided it has not been locked-out.

If there is an initial call for both stages of coolin g, the UCB will delay energizing compressor #2 by 30 seconds in order to avoid a power rush.

Once the thermostat has been satisfied, it wil l de-energize Y1 and Y2. If the compressors have satisfied their minimum run times, the compressors and condenser fans are de-energized. Otherwise, the unit operates each cooling system until the minimum run times for the compressors have been completed. Upon the final compressor de-energizing, the blower is stopped f ollowing the elapse of the fan off del ay for cooling.

* To be available, a compressor must not be locked-out due to a high or low-pressure switch or freezestat trip and the

Anti-Short Cycle Delay (ASCD) must have elapsed.

ECONOMIZER WITH SINGLE ENTHALPY SENSOR -

ECONOMIZER WITH DUAL ENTHALPY SENSORS -

The operation with the dual enthalpy sensors is identical to the single sensor except that a second enthalpy sensor is mounted in the return air. This return air sensor allows the economizer to choose between outdoor air and return air, whichever has the lowest enthalpy value, to provide maximum operating efficiency.

ECONOMIZER WITH POWER EXHAUST -

A unit equipped with an economizer (single or dual enthalpy) and a power exhaust operates as specified above with one addition. The power exhaust motor is energized 45 seconds after the actuator position exceeds the exhaust fan set point on the economizer control. When the power exhaust is operating, the second stage of mechanical cooling will not operate. As always, the "R" to "G" connection provides minimum position but does not provide power exhaust operat ion.

MOTORIZED OUTDOOR AIR DAMPERS -

This system operation is the same as the units with no outdoor air options with one exception. When the "R" to "G" circuit is complete, the motorized damper drives open to a position set by the thumbwheel on the damper motor. When the "R" to "G" circuit is opened, the damper spring returns fully close d .

When the room thermostat calls for "first-stage" cooling, the low voltage control circuit from "R" to "G" and "Y1" is com-

34 Unitary Products Group

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035-17311-002-A-0803

COOLING OPERATION ERRORS

Each cooling system is monitored for operation outside of the intended parameters. Errors are han dled as described below. All system errors override minimum run times for compressors.

HIGH-PRESSURE LIMIT SWITCH

During cooling operation, if a high-pressure limit switch opens, the UCB will de-energize the associated compressor, initiate the ASCD (Anti-short cycle delay), and, if the other compressor is idle, stop the condenser fans. If the call for cooling is still present at the conclusion of the ASCD, the UCB will re-energize the halted compressor.

Should a high-pressure switch open three times within two hours of operat ion, the UCB will lock-out the associated compressor and flash a code (see 37). If the other compressor is inactive, the condenser fans will be de-ene rgized.

LOW-PRESSURE LIMIT SWITCH

The low-pressure limit switch is not monitored during the initial 30 seconds of a cooling system's operation. For the following 30 seconds, the UCB will monitor the low-pressure switch to ensure it closes. If the low-p ressure sw itch fails to close after the 30-second monitoring phase, the UCB will deenergize the associated compressor, initiate the ASCD, and, if the other compressor is idle, stop the condenser fans.

Once the low-pressure switch has been proven (closed during the 30-second monitor period described above), the UCB will monitor the low-pressure limit switch for any openings. If the low-pressure switch opens for greater than 5 seconds, the UCB will de-energize the associated compressor, initiate the ASCD, and, if the other compressor is idle, stop the condenser fans.

LOW AMBIENT COOLING

To determine when to operat e in low ambient mode, the UCB has a pair of terminals connected to a temperature-activated switch set at 45ºF. When the low ambient switch is closed and the thermostat is cal li ng for cooling, the UCB will operate in the low ambient mode.

Low ambient mode ope rates the compressor s in this manner: 10 minutes on, 5 minutes off. The indoor blower is operated throughout the cycle. The 5-minute off period is necessary to defrost the indoor coi l.

Low ambient mode always begins with compressor operation. Compressor minimum run time may extend the minutes of compressor operation. The defrost cycle will begin immediately following the elapse of the minimum run time.

When operating in low ambient mode, the UCB will not lockout the compressors due to a freezestat trip. However, a freezestat trip will de-energize the associated compressor. If the call for cooling is still present at the end of the ASCD and the freezest at has closed, the unit will resu me operation.

SAFETY CONTROLS

The unit control board monitors the following inputs for each cooling system:

1. A suction line freezestat to prot ect against low evaporator temperatures due to a low air fl ow or a lo w retu rn ai r temperature, (opens at 26 ± 5 ° F and resets at 38 ± 5°F).

2. A high-pressure switch to prote ct against excessive discharge pressures due to a blocked condenser coil or a condenser motor failure, (opens at 405 ± 10 psig or 440 ± 10 psig depending on unit model).

3. A low-pressure switch to protect against loss of refrigerant charge, (opens at 7 ± 3 psig or 22 ± 5 psig) .

If the call for cooling is still present at the conclusion of the ASCD, the UCB will re-energize the halted compressor.

Should a low-pressure switch open three times within one hour of operation, the UCB will lock-out the associated compressor and flash a code (37). If the other compressor is inactive, the condenser fans will be de-energized.

FREEZESTAT

During cooling operation, if a freezestat opens, the UCB will de-energize the associated compressor, initiate the ASCD, and, if the other compressor is idle, stop the condenser fans. If the call for cooling is still present at the conclusion of the ASCD, the UCB will re-energize the halted compressor.

Should a freezestat open three times within two hours of operatio n, the UCB w ill lock-out the associate d compresso r and flash a code (37). If the other compressor is inactive, the condenser fans will be de-energized.

Unitary Products Group 35

The above pressure switches are hard-soldered to the unit. The refrigeration systems are independently monitored and controlled. On any fault, only the associated system will be affected by any saf ety/ prevent ive acti on. The oth er refrige ran t system will continue in operation unless it is affected by the fault as well.

The unit control board monitors the temperature limit switch of electric heat units and the temperature limit switch and the gas valve of gas furnace units.

COMPRESSOR PROTECTION

In addition to the external pressure snitches, the compressors also have inherent (internal) protection. If there is an abnormal temperature rise in a compressor, the protector will open to shut down the compressor. The UCB incorporates features to minimize compressor wear and damage. An Anti- Short Cycle Delay (ASCD) is utilized to prevent operation of

Page 36

035-17311-002-A-0803

a compressor too soon after its previous run. Additionally, a minimum run time is imposed any time a compressor is energized.

The ASCD is initiat ed on unit start-up and on any compressor reset or lock-out.

FLASH CODES

The UCB will initiate a flash code associated with errors within the system. Refer to UNIT CONTROL BOARD FLASH CODES 37.

RESET

Remove the call for cooling, by raising thermostat setting higher than the conditioned space temperature. This resets any pressure or freez estat flash codes.

ELECTRIC HEATI NG SEQUENCE OF OPERATIONS

The following sequence describes the operation of the electric heat section.

Two-s tage heating:

a. Upon a call for first stage heat by the thermostat, the

heater relay (RA) wi ll be energized. After completing the specified fan on delay for heating, the UCB will energize the blower motor. If the second stage of heat is required, heater relay (RB) will be energized. After completing the specified fan on delay for heating, the UCB will energize the blower motor.

b. The thermostat will cycle the electric heat to satisfy

the heating requirements of the conditioned space.

ELECTRIC HEATING OPERATI ON ERRORS

TEMPERATURE LIMIT

If the UCB senses zero volts from the high temperature limit, the indoor blower motor is imm ediately energized.

This limit is monitored regardless of unit operation status, i.e. the limit is monitored at all times.

If the temperature limit opens three times within one hour, it will lock-on the indoor blower motor and a flash code is initiated (See Table 37).

Limit Setting Table 32. It resets automatically. The limit switch operates when a high temperature condition, caused by inadequate supply air flow occurs, thus shutting down the heater and energizing the blower.

TABLE 32: ELECTRIC HEAT LIMIT SETTING

LIMIT

UNIT (TONS) VOLTAGE HEATER kW

7.5

7.5, 10, 12.5 18 150

7.5, 10, 12.5 24 150

7.5, 10, 12.5 34 150 10, 12.5 54 130

380

9150

SWITCH

OPENS °F

FLASH CODES

The UCB will initiate a flash code associated with errors within the system. Refer to UNIT CONTROL BOARD FLASH CODES Table 37.

RESET

Remove the call for heating by lowering the thermostat setting lower than the conditioned space temperature.This resets any flash codes.

ELECTRIC HEAT ANTICTPATOR SETPOINTS

It is important that the anticipator setpoint be correct. Too high of a setting will result in longer heat cycles and a greater temperature swing in the conditioned space. Reducing the value below the correct setpoint will give shorter “ON” cycles and may result in the lowering of the temperature within the conditioned space. Refer to Table 33 for the required electric heat anticipator setting.

TABLE 33: ELECTRIC HEAT ANTICIPATOR

SETPOINTS

SETTING, AMPS

W1 W2

0.13 0.1

SAFETY CONTROLS

The UCB monitors the temperature limit switch of electric heat units.

The control circuit includes the following safety controls:

LIMIT SWITCH (LS)

This control is located inside the heater compartment and is set to open at the temperature indicated in the Electric Heat

36 Unitary Products Group

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START-UP (COOLING)

PRESTART CHECK LIST

After instal lation has been completed:

1. Check the electrical supply voltage being supplied . Be sure that it is the same as listed on the unit nameplate.

2. Set the room thermostat to the off position.

3. Turn unit electrical power on.

4. Set the room thermostat fan switch t o on.

5. Check indoor blower rotation.

• If blower rotation is in the wrong direction. Refer to

Phasing Section in general information section.

• Check blower drive belt tension.

6. Check the unit supply air (CFM).

7. Measure evaporator fan motor's am p draw.

8. Set the room thermostat fan switch t o off.

9. Turn unit electrical power off.

OPERATING INSTRUCTIONS

1. Turn unit electrical power on. NOTE: Prior to ea ch cooling season, t he crankcase heaters

must be energized at least 10 hours before the system is put into operation.

2. Set the room thermostat setting to lower than the room temperature.

3. First stage compressors will energize after the built-in time delay (five minutes).

4. The second stage of the thermost at wil l energize seco nd stage compre ssor if needed.

POST START CHECK LIST

1. Verify proper system pressures for both circuits.

2. Measure the temperature drop across the evaporator coil.

CHARGING THE UNIT

These units should be charged using the superheat method. Super heat charging data is shown in Tables 34 thru 36.

When charging each system, superheat data should be taken at the compressor i nlet.

TABLE 34: 7.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING

Superheat at Compressor Suction (°F)

Outdoor

Temp (°F)

55 57 59 61 63 65 67 69 71 73 75

65 10.6 13.5 16.3 19.1 22.0 24.8 27.7 29.1 30.5 32.0 33.4 70 8.4 11.1 13.8 16.5 19.3 22.0 24.7 26.5 28.4 30.2 32.0 75 6.1 8.7 11.3 13.9 16.6 19.2 21.8 24.0 26.2 28.4 30.6 80 - 6.4 8.9 11.4 13.9 16.3 18.8 21.4 24.0 26.6 29.2 85 - - 6.4 8.8 11.1 13.5 15.9 18.9 21.9 24.8 27.8 90 - - 5.8 7.9 10.1 12.2 14.3 17.2 20.2 23.1 26.1

95 - - 5.3 7.1 9.0 10.8 12.7 15.6 18.5 21.5 24.4 100 - - - 6.3 7.7 9.0 10.4 13.5 16.6 19.7 22.8 105 - - - 5.5 6.4 7.3 8.1 11.4 14.6 17.9 21.2 110 - - - - 5.1 5.5 5.9 9.3 12.7 16.1 19.5 115 -------7.2 10.8 14.3 17.9

Airflow = 3000 CFM

Indoor WB Temp (°F)

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035-17311-002-A-0803

TABLE 35: 10 TON STANDARD EFFICIENCY SUPERHEAT CHARGING

Superheat at Compressor Suction (°F)

Outdoor

Temp (°F)

55 57 59 61 63 65 67 69 71 73 75

65 19.6 20.8 22.0 23.2 24.4 25.6 26.9 28.4 29.9 31.4 32.9 70 14.4 16.0 17.5 19.0 20.5 22.0 23.5 25.4 27.3 29.2 31.0 75 9.3 11.1 12.9 14.7 16.6 18.4 20.2 22.4 24.7 26.9 29.1 80 - 6.3 8.4 10.5 12.6 14.8 16.9 19.5 22.0 24.6 27.2 85 - - - 6.3 8.7 11.1 13.6 16.5 19.4 22.4 25.3 90 - - - 5.6 7.8 9.9 12.0 15.0 17.9 20.8 23.7

95 - - - - 6.8 8.7 10.5 13.4 16.3 19.3 22.2 100 - - - - 5.3 6.7 8.1 10.8 13.5 16.2 18.9 105 - - - - - - 5.7 8.1 10.6 13.1 15.5 110 - - - - - - - 5.5 7.7 10.0 12.2 115 - - - - - - - - - 6.9 8.9

Airflow = 4000 CFM

Indoor WB Temp (°F)

TABLE 36: 12.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING

Superheat at Compressor Suction (°F)

Outdoor

Temp (°F)

55 57 59 61 63 65 67 69 71 73 75

65 33.6 34.2 34.7 35.3 35.9 36.4 37.0 37.3 37.5 37.8 38.0

70 29.6 30.4 31.1 31.9 32.7 33.4 34.2 34.7 35.3 35.8 36.3

75 25.6 26.6 27.5 28.5 29.5 30.5 31.4 32.2 33.0 33.8 34.6

80 21.6 22.8 24.0 25.1 26.3 27.5 28.6 29.7 30.8 31.8 32.9

85 17.6 19.0 20.4 21.7 23.1 24.5 25.9 27.2 28.5 29.9 31.2

90 11.6 13.4 15.2 16.9 18.7 20.5 22.3 24.3 26.3 28.3 30.3

95 5.6 7.8 10.0 12.1 14.3 16.5 18.7 21.3 24.0 26.7 29.4 100 - 6.1 7.8 9.4 11.1 12.8 14.5 17.5 20.6 23.7 26.7 105 - - 5.5 6.7 7.9 9.1 10.3 13.8 17.2 20.7 24.1 110 - - - - - 5.4 6.1 10.0 13.8 17.6 21.5 115 - - - - - - - 6.2 10.4 14.6 18.8

Airflow = 5000 CFM

Indoor WB Temp (°F)

38 Unitary Products Group

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035-17311-002-A-0803

NORMAL MAINTENANCE

Prior to any of the following maintenance procedures, shut off all power to the unit to prevent personal inju r y.

Periodic maintenance normally consists of changing or cleaning filters.

GENERAL

FILTERS

Inspect once a month. Replace disposable or clean permanent type as necessary. DO NOT replace permanent type with disposable.

MOTORS

Indoor fan and outdoor fan motor s are permanent ly lubr icat ed and require no maintena nce.

OUTDOOR COIL

Dirt should not be allowed to accumulate on the outdoor coil surface or other parts in the air circuit. Cleaning should be as often as necessary to keep coil clean. Use a brush, vacuum cleaner attachment, or other suitable means. If water is used to clean coil, be sure power to the unit is shut off prior to cleaning. Service access is provided in the front and rear condenser compartment panels to provide improved access

to the condenser coils.

TROUBLESHOOTING

Troubleshooting of components may require opening the electrical control box with the power connected to the unit. Use extreme care when working with live circuits! Check the unit nameplate for the correct line voltage and set the voltmeter to the correct range before making any connections with line terminals.

When not necessary, shut off all electric power to the unit prior to any of the following maintenance procedures so as to prevent personal injury.

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation which could cause injury to person and/or damage unit c om ponents. Verify proper operation after servi cing.

PREDATOR® FLASH CODES

Various flash codes are utilized by the unit control board (UCB) to aid troubleshooting. Flash codes are distinguished by the short on and off cycle used (approximately 200ms on and 200ms off). To show normal operation, the control board flashes a 1 second on, 1 second off “heartb eat ” during normal operation. This is to verify that the UCB is functioning correctly. Do not confuse this with an error flash c ode. To prevent confusion, a 1-flash, flash code is not used.

Do not remove service panels or attempt to clean the interior of the condenser section when the unit is powered and/or operating. Shut off all power to the unit prior to cleaning or maintenance of the condenser section internals.

NOTE: Exerc ise care when cleaning the coil so that the coil

fins are not damaged. Do not permit the outdoor air discharge to be obstructed by overhanging structures of shrubs .

Unitary Products Group 39

Current alarms are flashed on the UCB LED. The alarm history can be checked by pressing and releasing the ALARMS button on the UCB. The UCB will cycle through the last five (5) alarms, m ost recent to old est, separating each alarm flash code by approximately 2 seconds.

In some cases, it may be necessary to “zero” the ASCD for the compressors in order to perfor m troubleshooting. To reset all ASCDs for one cycle, press and release the UCB TEST button once.

Page 40

TABLE 37: UNIT CONTROL BOARD FLASH CODES

Flash Code Description

On Steady Heart Beat Normal Operation

1 Flash Not Applicable 2 Flashes 3 Flashes 4 Flashes 5 Flashes LPS1 - Compressor Lock out 6 Flashes LPS2 - Compressor Lock out 7 Flashes FS1 - Compressor Lock out 8 Flashes FS2 - Compressor Lock out

9 Flashes

10 Flashes

11 Fl ash e s 12 Flashes Fan Overload Switch Trip - Not Applicable On This Unit *

13 Flashes Compressor Held Off Due To Low Voltage* 14 Flashes

OFF

These flash codes do not represent alarms.

Control Failure - Replace Control

Control waiting ASCD

HPS1 - Compressor Lock out HPS2 - Compressor Lock out

Ignition Control Locked Out/ Ignition Control Failure / Limit Switch Trip / No Jumper Plug in Heat Section

Compressors Locked Out On Low Outdoor Ai r Temperatur e

Compressors Locked Out Because The Economiz er Is Using Free Cooli ng

EEPROM Storage Failure (Control Failure) No Power or Control Failur e

035-17311-002-A-0803

Monitor

Monitored

Systems Problem?

Trip/Failure

Turn off ID

Blower Motor

No No

Yes

Programming?

Yes

Program

Unit

Control

Board

Fan on

>30 secs?

Yes

Lossof Call

for ID Blo w er ?

FIGURE 24 - BASIC TROUBLESHOOTING FLOWCHART

Call for Heating?

Yes

Call for

Heat

Energize ID

Blower Motor

Yes

Fan off

>10 secs?

Yes

Call for

ID Blower?

Loss o f

Yes

Call for

Heating?

Call for

Cooling?

Loss of Call

for Cooling?

Heat Off

Call for 2nd

Stage

Cooling

Yes

First

Stage?

Yes

Call for 1st

Stage

Cooling

Cool Off

40 Unitary Products Group

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035-17311-002-A-0803

COOLING TROUBLESHOOTING GUIDE

On calls for cooling, if the compressors are operating but the supply air blower motor does not energize aft er a short delay (the room thermost at fan switch is in the “AUT O” position):

1. Turn the thermostat fan switc h to the ON position. If the supply air blow er motor does not energize, go to Step 3.

2. If the blower motor runs with the fan switch i n the ON position but wil l not run after the first compressor has energized when the f an swit ch is in the AUTO position, check the room thermostat for contact between R and G in the AUTO position during calls for cooling.

3. If the supply air blower motor does not energize when the fan switch is set to ON, check that line voltage is being supplied to the contacts of the M3, contactor, and that the contactor is pulled in. Check for loose wiring between the contactor and the supply air blower motor.

4. If M3 is pulled in and voltage is supplied to M3, lightly touch the supp ly ai r blower mot or housi ng. I f it is hot , the motor may be off on int ernal protection. Cancel any thermostat c alls and set the f an switch to AUT O. W ai t f or the internal overload to reset. Test again when cool.

5. If M3 is not pulled in, check for 24 volts at the M3 coi l. If 24 volts are pre sent at M3 but M3 is not pulled in, replace the cont actor.

6. Failing the above, if there is l ine voltage supplied at M3, M3 is pulled in, and the suppl y air blower mot or stil l does not operate, replace the motor.

7. If 24 volts is not present at M3, check that 24 volts is present at the UCB supply ai r blower motor terminal, “FAN”. If 24 volts is present at the FAN, check for loose wiring between the UCB and M3.

8. If 24 volts is not present at the “FAN” termin al, check for 24 volts fro m the room thermostat. If 24 volt s are not present from the room thermostat, check for the following:

a. Proper operation of the room thermostat (contact

between R and G with the fan switch i n the ON position and in the AUTO position during operation calls).

b. Proper wiring between the room thermostat and the

UCB, and

c. Loose wiring from the room thermostat to the UCB

9. If 24 volts i s presen t at t he room ther most at bu t not at the UCB, check for proper wiring between the thermostat and the UCB, i.e. that the ther m ostat G terminal is connected to the G terminal of the UCB, and for loose wiring.

10. If the thermostat and UCB are properly wired, replace the UCB.

On calls for cooling, the supply air blower motor is operating but compressor #1 is not (the room ther m ostat fan switch is in the “AUTO” position):

1. If installed, check th e positi on of the economizer blades. If the blades are open, the economizer is providing free cooling and the compres sors will not immediately operate. If both stages of cooling are requested simul taneously and the economizer provides free cooling, following a short delay com pressor #1 will be energize d unless it is locked out . If com pressor #1 is locked out, compressor #2 is energi zed. Compressor #2 is always energized in place of compressor #1 when compresso r #1 is requested but locked out.

2. If no economizer is installed or the economizer is not opening to provide free cooling and compressor #1 does not energize on a call for cooling, check for line voltage at the compressor cont actor, M1, and that the contactor is pulled in. Check for loose wi ri ng between the contactor and the compressor.

3. If M1 is pulled in and voltage is suppli ed at M1, lightly touch the compressor housing. If it is hot, the compressor may be off on inhere nt pr otection. Cancel any calls for cooling and wait for the i nternal overload to reset . Test again when cool.

4. If M1 is not pulled in, check fo r 24 volts at the M1 coil. If 24 volts are prese nt and M1 is not pulled in, replace the contactor.

5. Failing the above, if voltage is supplied at M1, M1 is pulled in, and the comp ressor still does not operate, replace the compressor.

6. If 24 volts is not present at M1, chec k for 24 volts at the UCB terminal, C1. If 24 volts is present, check for loose wiring between C1 and the compressor contactor.

7. If 24 volts is not present at the C1 termi nal, check for 24 volts from the room thermostat at the UCB Y1 terminal . If 24 volt s is no t prese nt fr om the room thermost a t, chec k for the following:

a. 24 volts at the thermostat Y1 ter m inal b. Proper wiring between the room thermostat and the

UCB, i.e. Y1 to Y1, Y2 to Y2, and

c. Loose wiring from the room thermostat to the UCB

8. If 24 volts is present at the UCB Y1 terminal, t he com pressor may be out due to an open high-pressur e switch, low-pressure switch, or freezestat. Check for 24 volts at the HPS1, LPS1, and FS1 terminals of the UCB. If a switch has opened, there should be a voltage potential between the UCB terminals, e.g. if LPS1 has opened, there will be a 24-volt potential between the LPS1 terminals.

9. If 24 volts is present at the UCB Y1 terminal and none of the protection switc hes have open ed, the UCB m ay hav e

Unitary Products Group 41

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035-17311-002-A-0803

locked out the compress or f or repeat trips. The UCB should be flashing an alarm code. If not, press and release the ALARMS button on the UCB. The UCB will flash the last five alarms on the LED. If the compressor is locked out, cancel any call for cooling. This will r eset any compressor lock outs.

NOTE: While the above step will reset any lockouts, com-

pressor #1 may be held off for the ASCD. See the next step.

10. If 24 volts is pr esent at the UCB Y1 term inal and none of the switches are open and the comp ressor is not locked out, the UCB may have the compressor in an ASCD. Check the LED for an indication of an ASCD cycl e. The ASCD should time out within 5 minutes. Press and release the TEST button to reset all ASCDs.

1 1. If 24 volts is present at the UCB Y1 terminal and the

compressor is not out due to a protective switch trip, repeat trip lock out, or ASCD, the economizer terminals of the UCB may be improper ly wired. Check for 24 volts at the Y1 “OUT” terminal of the UCB. If 24 volts is present, trace the wiri ng from Y1 “OUT” for incorrect wiring. If 24 volts is not present at the Y1 “OUT” terminal, the UCB must be replaced.

12. For units without economizers: If 24 volts is present at the Y1 OUT terminal, check for 24 volts at the Y1 “ECON” terminal. If 24 volts is not present, check for loose wiring from the Y1 “OUT” terminal to the Mate-NLock plug, the jumper in the Mate-N-Lock plug, and in the wiring from the Mate-N-Lock plug to the Y1 “ECON” terminal.

13. For units with economizers: If 24 volts is prese nt at the Y1 “OUT” terminal, check for 24 volts at the Y1 “ECON” terminal. If 24 volts is not present, check for loose wiring from the Y1 “OUT” terminal to the Mate-N-Lock plug, a poor connection bet ween the UCB and economizer Mate-N-Lock plugs, loose wiring from the Mate-N-Lock plug to the economizer, back to the Mate-N-Lock plug, and from the Mate-N-Lock plug t o the Y1 “ECON” terminal. If nothing is found, the econ omiz er contr ol may ha ve faulted and is failing to return the 24-volt “call” to the Y1 “ECON” terminal even though th e economizer is not providing free c ooling . To test, disconnect the Ma te-N- Locks and jumper between the WHITE and YELLOW wires of the UCB’s Mate-N-Loc k plug. If compressor #1 energizes, there is a fault in the economizer wiring or the economizer control.

14. The UCB can be programmed to lock out compressor operation during fr ee cooling and in low ambient conditions. These options are not enabled by default. Local York distri butors can test the UCB for this progra mmi ng.

15. If none of the above corrected the error, test the integrity of the UCB. Disconnect the C1 terminal wire an d jumper it to the Y 1 terminal. DO NOT jump the Y1 to C1 termi nals. If the compressor engages, the UCB has faulted.

16. If none of the above correct the error, replace the UCB. On calls for the second stage of cooling, the supply air blower

motor and compr essor #1 are operati ng but compressor #2 is not (the room thermostat fan switch is in the “AUTO” position):

1. If installed, check the posit ion of t he economize r blades. If the blades are open, t he econom izer is providing free cooling. If the second stage of cooling is requested, following a short delay, compressor #1 will be energized unless it is locked out. Typically, compressor #2 is energized only during free cooling if the call for the second stage of cooli ng persists for 20 minu tes.

2. Compressor #2 will not energize sim ult aneously with compressor #1 if a cal l f or both stages of cooling is received. The UCB delays compressor #2 by 30 seconds to prevent a power surge. If after the delay compressor #2 does not ener gize on a second stage call for cooling, check for line voltage at the compr e ssor contactor, M2, and that the contactor is pulled in. Check for loose wiring between the contactor and the compressor.

3. If M2 is pulled in and voltage is supplied at M2, lightly touch the compressor housing. If it is hot, the compr e ssor may be off on inher ent protection. Cancel any cal ls for cooling and wait f or the internal overload to reset. Test again when cool.

4. If M2 is not pulled in, check for 24 volts at the M2 coil. If 24 volts is present and M2 is not pulled in, replace the contactor.

5. Failing the above, if voltage is supplied at M2, M2 is pulled in, and the compressor still does not operate, replace the compres sor.

6. If 24 volts is not present at M2, check for 24 volts at the UCB terminal, C2. If 24 volts are present, check for loose wiring between C2 and th e com pressor contactor.

7. If 24 volts is not present at the C2 terminal, check for 24 volts from the room thermostat at the UCB Y2 terminal. If 24 volt s is n ot pres ent from t he room thermos tat, ch eck for the following:

a. 24 volts at the thermostat Y2 terminal b. Proper wiring between the room thermostat and the

UCB, i.e. Y1 to Y1, Y2 to Y2, and

c. Loose wiring from the room thermostat to the UCB

8. If 24 volts is present at the UCB Y2 terminal, the compressor ma y be out du e to an ope n high- pr essure switch , low-pressur e swit ch, or freezest at. Check for 24 volts at the HPS2, LPS2, and FS2 terminals of the UCB. If a switch has opened, t here should be a voltage potent ial between the UCB terminals, e.g. if LPS2 has opened, there will be 24 volts of potential between the LPS2 te rminals.

42 Unitary Products Group

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035-17311-002-A-0803

9. If 24 volts is present at the UCB Y2 terminal and none of the protect ion s witche s ha ve opened, t he UCB m ay have locked out the compr essor for repeat trips . The UCB should be flashing a code. If not, press and release the ALARMS button on the UCB. The UCB will flas h the last five alarms on the LED. If the com pressor is locked out,

remove any call for cooling at the thermostat or by disconnecting t he thermost at wiring at the Y2 UCB t erminal. This will reset any compressor lock outs.

NOTE: While the above step will reset any loc k outs, c om-

pressor #1 will be held off for the ASCD, and compressor #2 may be held off for a portion of the ASCD. See the next step.

10. If 24 volts is present at the UCB Y2 t erminal and none of the switches are open and the compressor is not locked out, the UCB may have the compressor in an ASCD. Check the LED for an indication of an ASCD cycle. The ASCD should time out within 5 minutes. Press and release the TEST button t o reset all ASCDs.

1 1. The UCB can be programmed to lock out compressor

operation during free cooling and in low ambient conditions. These opt ions are not enabled by default . Local York distributors can test the UCB for this programming.

12. If none of the ab ove corrected the error, test the integri ty of the UCB. Disconnect the C2 terminal wire and j umper it to the Y2 terminal. DO NOT jump the Y2 to C2 terminals. If the compressor engages, the UCB has faulted.

13. If none of the above correct the err or, replace the UCB.

On a call for cooling, the supply air blower motor and compressor #2 are operating but compressor #1 is not (the room thermostat fan switch is in the “AUTO” posi tion):

1. Compressor #2 is energized in place of compressor #1 when compressor #1 is unav ail able for cooling call s. Check the UCB for alarms i ndicating that compressor #1 is locked out. Press and re lease the ALARMS button if the LED is not flashing an alar m.

2. Check for line voltage at the compressor contact or, M1, and that t he cont ac tor i s pul led i n. Che ck for l oose wi ring between the contactor and the compressor.

3. If M1 is pulled in and voltage is supplied at M1, lightly touch the compressor housing. If it is hot, the compressor may be off on inher ent protection. Cancel any calls for cooling and wait for the internal overload to reset. Test again when cool.

4. If M1 is not pulled in, check for 24 volts at the M1 coi l. If 24 volts is present and M1 is not pulled in, replace the contactor.

5. Failing the above, if voltage is supplied at M1, M1 is pulled in, and the comp ressor still does not operate, replace the compressor.

6. If 24 volts is not present at M1, chec k for 24 volts at the UCB terminal, C1. If 24 volts is present, check for loose wiring between C1 and the compressor contactor.

7. If 24 volts is not present at the C1 termi nal, check for 24 volts from the room thermostat at the UCB Y1 terminal . If 24 volts are not present at the UCB Y1 terminal, the UCB may have faulted. Check for 24 volts at the Y1 ECON terminal. If 24 volts is not present at Y1 “ECON” , the UCB has faulted. The UCB should de-energize all compressors on a loss of cal l for the first stage of cooling, i.e. a loss if 24 volts at the Y1 terminal.

8. If 24 volts are present at the UCB Y1 terminal, t he com pressor may be out due to an open high-pressur e switch, low-pressure switch, or freezestat. Check for 24 volts at the HPS1, LPS1, and FS1 terminals of the UCB. If a switch has opened, there should be a voltage potential between the UCB terminals, e.g. if LPS1 has opened, there will be a 24-volt potential between the LPS1 terminals.

9. If 24 volts is present at the UCB Y1 terminal and none of the protection switc hes have open ed, the UCB m ay hav e locked out the compres sor for repeat trips. The UCB should be flashing a code. If not, press and release the ALARMS button on the UCB. The UCB will flash the la st five alarms on the LED. If the compressor is locked out, remove any call for cooling. This will reset any compressor lock outs.

NOTE: While the above step will reset any lock outs, com-

pressor #2 will be held off for the ASCD, and compressor #1 may be held off for a portion of the ASCD. See the next step.

10. If 24 volts is pr esent at the UCB Y1 te rminal and none of the switches are open and the compressor is not locked out, the UCB may have the compresso r in an ASCD. Check the LED for an indicati on of an ASCD cycle. The ASCD should time out within 5 minutes. Press and release the TEST button to reset all ASCDs.

1 1. If 24 volts is present at the UCB Y1 terminal and the

compressor is not out due to a prot ective switch trip, repeat trip lock out , or ASCD, the economizer terminals of the UCB may be improperly wired. Check for 24 volts at the Y1 “OUT” terminal of the UCB. If 24 volts is present, trace the wiri ng fr om Y1 “OUT” for incorrect wiring. If 24 volts is not present at the Y1 “OUT” terminal, the UCB must be replaced.

12. For units without economizers: If 24 volts is pres ent at the Y1 “O UT ” terminal, che ck fo r 2 4 v ol ts at th e Y 1 “ECON” terminal. If 24 volts is not present, check for loose wiring from the Y1 “OUT” termi nal to the Mate-NLock plug, the jumper in the Mate-N-Lock plug, and in the wiring from the Mate-N-Loc k plug to the Y1 “ECON” terminal.

For units with economizers:If 24 volts is present at the Y1 “OUT” terminal, check fo r 24 vol ts at the Y1 “ECON”

Unitary Products Group 43

Page 44

terminal. If 24 vol ts i s not pres ent, chec k for loo se wiring from the Y1 “OUT” terminal to the Mate-N-Lock plug, a poor connection between the UCB and economizer Mate-N-Lock plugs, loose wiring from the Mate-N-Lock plug to the economiz er, back to the Mate-N-Lock plug, and from the Mate-N-L ock plug to the Y1 “ECON” terminal. The eco nomizer control may have fault ed and is not returning the 24 vol ts to the Y1 “ECON” terminal even though the economizer is not providing free cooling. To test the economizer control, disconnect the Mate-N-Locks and jumper between the WHITE and YELLOW wires of the UCB’s Mate-N-Lock plug.

13. The UCB can be programmed to lock out compressor operation during fr ee cooling and in low ambient condi tions. These options are not enabled by default. They can be checked by local York distributors.

14. If none of the above corrected the error, test the integrit y of the UCB. Disconnect th e C1 termin al wire and ju mper it to the Y1 terminal. DO NOT jump the Y1 to C1 terminals. If the compressor engages, the UCB has faulted.

15. If none of the above correct the error, replace the UCB.

Unitary 5005 Norman Products York OK Group Drive 73069

York PREDATOR 150 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

GENERAL

SAFETY CONSIDERATIONS

REFERENCE

APPROVALS

INSPECTION

NOMENCLATURE

INSTALLATION

ELECTRIC HEAT ACCESSORIES

ELECTRIC HEAT OPTION

MOTORIZED OUTDOOR DAMPER

ECONOMIZER

POWER EXHAUST

RAIN HOOD

ENTHALPY SET POINT ADJUSTMENT

INDOOR AIR QUALITY AQ

MINIMUM POSITION ADJUSTMENT

METHOD ONE

METHOD TWO

OPERATION

CONTINUOUS BLOWER

INTERMITTENT BLOWER

NO OUTDOOR AIR OPTIONS

ECONOMIZER WITH SINGLE ENTHALPY SENSOR -

ECONOMIZER WITH DUAL ENTHALPY SENSORS -

ECONOMIZER WITH POWER EXHAUST -

MOTORIZED OUTDOOR AIR DAMPERS -

COOLING OPERATION ERRORS

HIGH-PRESSURE LIMIT SWITCH

LOW-PRESSURE LIMIT SWITCH

LOW AMBIENT COOLING

FREEZESTAT

FLASH CODES

RESET

TEMPERATURE LIMIT

FLASH CODES

RESET

SAFETY CONTROLS

LIMIT SWITCH (LS)

START-UP (COOLING)

CHARGING THE UNIT

NORMAL MAINTENANCE

FILTERS

MOTORS

OUTDOOR COIL

TROUBLESHOOTING