Sunlife Enterprises DM180, DM300, DM240 User Manual

INSTALLATION

SUNLINE™ 2000

MANUAL - 50Hz

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .4

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

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

PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . .6

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . .42

START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . .43

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . .45

GAS/ELECTRIC SINGLE PACKAGE

AIR CONDITIONERS

MODELS: DM180, 240 & 300

(Export)

See the following page for a complete Table of Contents.

NOTES, CAUTIONS AND WARNINGS

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

are intended to

are given

are given to

ISO 9001

Certified Quality

Management System

CAUTION: READ ALL SAFETY GUIDES BEFORE YOU

BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

356214-XIM-A-0108

TABLE OF CONTENTS

356214-XIM-A-0108

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY CONSIDERA TIONS. . . . . . . . . . . . . . . . . . . . . . . . . 4

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

PRODUCT NOMENCLATURE. . . . . . . . . . . . . . . . . . . . . . . . 6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

INSTALLATION SAFETY INFORMATION:. . . . . . . . . . . . . . 7

LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

RIGGING AND HANDLING. . . . . . . . . . . . . . . . . . . . . . . . . . 9

CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

FIXED OUTDOOR AIR INTAKE DAMPER . . . . . . . . . . . . . 10

CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . . . 13

OPTIONAL ELECTRIC HEAT . . . . . . . . . . . . . . . . . . . . . . . 13

OPTIONAL GAS HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

GAS CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

L.P. UNITS, TANKS AND PIPING. . . . . . . . . . . . . . . . . . . . 15

VENT AND COMBUSTION AIR HOODS . . . . . . . . . . . . . . 16

OPTIONAL ECONOMIZER/MOTORIZED DAMPER RAIN

HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

OPTIONAL POWER EXHAUST/BAROMETRIC RELIEF

DAMPER RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . 17

OPTIONAL ECONOMIZER AND POWER EXHAUST

DAMPER SET POINT ADJUSTMENTS AND

INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

MINIMUM POSITION ADJUSTMENT . . . . . . . . . . . . . . . 17

ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . . . . 17

POWER EXHAUST DAMPER SETPOINT. . . . . . . . . . . . 17

INDOOR AIR QUALITY AQ . . . . . . . . . . . . . . . . . . . . . . . 17

OPTIONAL BAS-READY ECONOMIZER POWER EX-

HAUST DAMPER SET POINT ADJUSTMENT . . . . . . . 17

CFM, STATIC PRESSURE, AND POW ER -

ALTITUDE AND TEMPERATURE CORRECTIONS . . . . . 26

PHASING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

CHECKING AIR SUPPLY CFM. . . . . . . . . . . . . . . . . . . . . . 34

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SEQUENCE OF OPERATIONS OVERVIEW . . . . . . . . . . . 36

COOLING SEQUENCE OF OPERATION. . . . . . . . . . . . . . 36

CONTINUOUS BLOWER. . . . . . . . . . . . . . . . . . . . . . . . . 36

INTERMITTENT BLOWER. . . . . . . . . . . . . . . . . . . . . . . . 36

NO OUTDOOR AIR OPTIONS. . . . . . . . . . . . . . . . . . . . . 36

ECONOMIZER WITH SINGLE ENTHALPY SENSOR -. . 36 ECONOMIZER WITH DUAL ENTHALPY SENSORS - . . 37

ECONOMIZER (SINGLE OR DUAL ENTHALPY) WITH

POWER EXHAUST - . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

MOTORIZED OUTDOOR AIR DAMPERS - . . . . . . . . . . 37

COOLING OPERATION ERRORS . . . . . . . . . . . . . . . . . 37

HIGH-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . . . 37

LOW-PRESSURE LIMIT SWITCH. . . . . . . . . . . . . . . . . . 37

FREEZESTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

LOW AMBIENT COOLING . . . . . . . . . . . . . . . . . . . . . . . 38

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

COMPRESSOR PROTECTION . . . . . . . . . . . . . . . . . . . . . 38

FLASH CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

ELECTRIC HEATING SEQUENCE OF OPERATIONS . . . 38

HEATING OPERATION ERRORS . . . . . . . . . . . . . . . . . . . 39

TEMPERATURE LIMIT . . . . . . . . . . . . . . . . . . . . . . . . . . 39

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

FLASH CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . . . . . . . 39

GAS HEATING SEQUENCE OF OPERATIONS . . . . . . . . 39

GAS HEATING OPERATION ERRORS . . . . . . . . . . . . . . . 40

TEMPERATURE LIMIT . . . . . . . . . . . . . . . . . . . . . . . . . . 40

GAS VALVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

FLASH CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

RESETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . . . . . . . 42

ST ART-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

PRESTART CHECK LIST. . . . . . . . . . . . . . . . . . . . . . . . . . 42

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 42

POST START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . 42

SHUT DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

ST ART-UP (GAS HEAT ). . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

PRE-START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . 43

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 43

TO LIGHT PILOT AND MAIN BURNERS:. . . . . . . . . . . . 43

TO SHUT DOWN: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

POST-START CHECK LIST (GAS) . . . . . . . . . . . . . . . . . . 43

MANIFOLD GAS PRESSURE ADJUSTMENT. . . . . . . . . . 44

PILOT CHECKOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

BURNER INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 44

BURNER AIR SHUTTER ADJUSTMENT. . . . . . . . . . . . . . 44

CHECKING GAS INPUT. . . . . . . . . . . . . . . . . . . . . . . . . . . 44

NATURAL GAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

ADJUSTMENT OF TEMPERATURE RISE . . . . . . . . . . . . 45

BELT DRIVE BLOWER. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

COOLING TROUBLESHOOTING GUIDE . . . . . . . . . . . . . 45

GAS HEAT TROUBLESHOOTING GUIDE . . . . . . . . . . . . 50

UNIT FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

UNIT CONTROL BOARD OPTION SETUP . . . . . . . . . . . . 54

OPTION BYTE SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . 54

HEAT DELAY SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2 Unitary Products Group

356214-XIM-A-0108

LIST OF FIGURES

Fig. # Pg. #

1 TYPICAL RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 FIXED OUTDOOR AIR DAMPER . . . . . . . . . . . . . . . . . . .11

4 RECOMMENDED DRAIN PIPING . . . . . . . . . . . . . . . . . . 11

5 FIELD WIRING - DM ELECTRIC/ELECTRIC AND

GAS/ ELECTRIC UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6 EXTERNAL SUPPLY CONNECTION EXTERNAL

SHUT-OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7 BOTTOM SUPPLY CONNECTION EXTERNAL

SHUT-OFF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

8 VENT AND COMBUSTION AIR HOOD . . . . . . . . . . . . . .16

9 ENTHALPY SETPOINT ADJUSTMENT . . . . . . . . . . . . . . 18

10 HONEYWELL ECONOMIZER CONTROL W7212 . . . . . . 18

11 FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . . . .19

12 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

13 FRONT VIEW DIMENSIONS (15, 20 & 25 TON) . . . . . . . 23

14 REAR VIEW DIMENSIONS. . . . . . . . . . . . . . . . . . . . . . . . 24

15 UNIT CLEARANCES AND RAIN HOOD DIMENSIONS

(15, 20 & 25 TON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

16 ALTITUDE/TEMPERATURE CONVERSION FACTOR . . 27

17 BELT ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

18 PRESSURE DROP ACROSS A DRY INDOOR COIL VS

SUPPLY AIR CFM FOR ALL UNIT TONNAGES . . . . . . . 35

19 GAS VALVE PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

20 GAS VALVE AND CONTROLS. . . . . . . . . . . . . . . . . . . . .42

21 TYPICAL GAS VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . 43

22 PROPER FLAME ADJUSTMENT . . . . . . . . . . . . . . . . . . . 44

23 TYPICAL FLAME APPEARANCE . . . . . . . . . . . . . . . . . . . 44

24 UNIT CONTROL BOARD . . . . . . . . . . . . . . . . . . . . . . . . .53

LIST OF TABLES

Tbl. # Pg. #

1 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . 8

2 CONTROL WIRE SIZES. . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 ELECTRIC HEAT APPLICATION DATA . . . . . . . . . . . . . 13

4 GAS HEAT APPLICATION DATA. . . . . . . . . . . . . . . . . . . 14

5 PIPE SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6 FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . . . . 19

7 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8 DM ELECTRICAL DATA -WITHOUT POWERED

CONVENIENCE OUTLET. . . . . . . . . . . . . . . . . . . . . . . . . 21

9 DM ELECTRICAL DATA -WITH POWERED

CONVENIENCE OUTLET. . . . . . . . . . . . . . . . . . . . . . . . . 22

10 UTILITIES ENTRY DATA . . . . . . . . . . . . . . . . . . . . . . . . . 23

11 ALTITUDE CORRECTION FACTORS . . . . . . . . . . . . . . . 26

12 SUPPLY AIR BLOWER PERFORMANCE (15 TON) -

COOLING ONLY 180 MBH - BOTTOM DUCT

CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

13 SUPPLY AIR BLOWER PERFORMANCE (20 TON) -

COOLING ONLY 240 MBH - BOTTOM DUCT

CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

14 SUPPLY AIR BLOWER PERFORMANCE (15 TON) -

GAS HEAT 180 MBH - BOTTOM DUCT

CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

15 SUPPLY AIR BLOWER PERFORMANCE (20 TON) -

GAS HEAT 240 MBH - BOTTOM DUCT

CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

16 SUPPLY AIR BLOWER PERFORMANCE (25 TON) -

COOLING APPLICATIONS 300 MBH - BOTTOM DUCT

CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

17 STATIC RESISTANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 33

18 POWER EXHAUST PERFORMANCE . . . . . . . . . . . . . . . 33

19 BLOWER MOTOR AND DRIVE DATA. . . . . . . . . . . . . . . 33

20 LIMIT CONTROL SETTING . . . . . . . . . . . . . . . . . . . . . . . 39

21 ELECTRIC HEAT ANTICIPATOR SETPOINTS. . . . . . . . 39

22 LIMIT CONTROL SETTING . . . . . . . . . . . . . . . . . . . . . . . 41

23 GAS HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . . 42

24 GAS RATE - CUBIC FEET PER HOUR . . . . . . . . . . . . . . 45

25 UNIT CONTROL BOARD FLASH CODES. . . . . . . . . . . . 53

26 HEAT DELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Johnson Controls Unitary Products 3

GENERAL

YORK Model DM units are either single package air conditions equipped with optional factory installed electric heaters, or single package gas-fired central heating furnaces with cooling unit. Both are designed for outdoor installation on a rooftop or slab.

The 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, gas connection, duct connections, installation of combustion air inlet hood, flue gas outlet hoods and fixed outdoor air intake damper (units without ec onomizer or motorized damper option only) at the point of installation.

The supplemental electric heaters have nickel-chrome elements and utilize single point power connection.

These gas-fired heaters have aluminized-steel or optional stainless steel, tubular heat exchangers with spark ignition with proven pilot. All gas heaters are shipped from the factory equipped for natural gas use, but can be field converted to L.P./ Propane with Kit Model # 1NP0418. See Gas Heat Application Data Table.

356214-XIM-A-0108

FIRE OR EXPLOSION HAZARD

Failure to follow safety warnings exactly could result in serious injury, death, or property damage.

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

- WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Leave the building immediately.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach the gas supplier , call the fire department.

- Installation and service must be performed by

a qualified installer, service agency or the gas supplier.

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, maintain or service this equipment.

Observe all precautions in the literature, on labels and tags accompanying the equipment whenever working on air conditioning equipment. Be sure to follow all other safety precautions that apply.

Wear safety glasses and work gloves, and follow all safety codes. Use a quenching cloth and have a fire extinguisher available for all brazing operations.

INSPECTION

As soon as a unit is received, it should be inspected for possible 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 writing.

REFERENCE

Additional information on the desig n, installation, oper ation and service of this equipment is available in the following reference forms:

• Technical Guide - 262257

• General Installation - 175240

4 Johnson Controls Unitary Products

356214-XIM-A-0108

RENEWAL PARTS

Contact your local York® Parts Distribution Center for authorized replacement parts.

APPROVALS

Design certified by CSA as follows:

• For use as a cooling unit only with or without optional electric heat.

• For use as a forced air furnace with cooling unit

• For outdoor installation only.

• For installation on combustible material.

• For use with natural gas or propane gas.

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.

IMPROPER 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 damage. Warnings are given to alert installer that personal injury and/ or equipment damage may result if installation procedure is not handled properly.

Johnson Controls Unitary Products 5

PRODUCT NOMENCLATURE

15-25 Ton Sunline & Magnum™ & MagnaDRY™ Model Number Nomenclature

D M 180 N24 A 7 A AA 1 0 1 2 4 A

356214-XIM-A-0108

Product Category

D = A/C, Single Pkg., R-22

Product Identifier

M = 8.5-9.0 EER A/C

Nominal Cooling Capacity

180 = 15 Ton 240 = 20 Ton

300 = 25 Ton

Heat Type and Nominal Heat Capacity

C00 = Cooling Only. No field installed

electric heat

Gas Heat Options

N24 = 240 MBH Output Aluminized Steel N32 = 320 MBH Output Aluminized Steel S24 = 240 MBH Output Stainless Steel S32 = 320 MBH Output Stainless Steel

Electric Heat Options

E18 = 18 KW E36 = 36 KW E54 = 54 KW E72 = 72 KW

Airflow

A = Std. Drive B = Std. Drive/Single Input Econo. C = Std. Drive/Single Input Econo./Power Exhaust

(Downflow Only) D = Std. Drive/Motorized Damper E = Std. Drive/Motorized Damper/Barometric Relief

J = Std. Drive/Single Input Econo./Barometric Relief N = Hi Static Drive* P = Hi Static Drive/Single Input Econo. Q = Hi Static Drive/Single Input Econo./Power Exhaust

(Downflow Only) R = Hi Static Drive/Motorized Damper K = Hi Static Drive/Motorized Damper/Barometric Relief S = Hi Static Drive/Single Input Econo./Barometric Relief

* Note: 50 Hz, DM180 -300 Models

come standard with high static drive package.

Voltage

7 = 380/415-3-50

Product Style

A = Style A

These four digits will not be assigned until a quote is requested, or an order placed.

SS Drain Pan

CPC Controller, DFS, APS

Johnson Controller, DFS, APS

Honeywell Controller, DFS, APS

Novar Controller, DFS, APS

Simplicity IntelliComfort Controller

Simplicity IntelliComfort Controller w/ModLinc

2" Pleated filters

4" Pleated filters

BAS Ready Economizer (2-10 V.D.C. Actuator Without a Controller)

Double Wall Construction

Any Combination of Additional Options that Don’t Have an Option Code Pre-assigned

Product Generation

1 = First Generation 2 = Second Generation

Standard Cabinet

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 RC = Coil Guard & American Flag TA = Technicoat Condenser Coil TJ = Technicoat Evaporator Coil TS = Technicoat Evaporator & Condenser Coils

ZZ = If desired option combination is not listed above, ZZ will be assigned and configuration options will be

located in digits 15-18.

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

Configuration Options (not required for all units)

Additional Options

Hinged Filter Door & Tool Free Access Cabinet

BA = Hinged Filter Door & Tool Free Access Panels BB = Phase Monitor, Hinged Filter Door & Tool Free

Access Panels

BC = Coil Guard, Hinged Filter Door & Tool Free

Access Panels

BD = Dirty Filter Switch, Hinged Filter Door &

Tool Free Access Panels

BE = Phase Monitor & Coil Guard, Hinged Filter

Door & Tool Free Access Panels

BF = Phase Monitor & Dirty Filter Switch, Hinged

Filter Door & Tool Free Access Panels

BG = Coil Guard & Dirty Filter Switch, Hinged Filter

Door & Tool Free Access Panels

BH = Phase Monitor, Coil Guard & Dirty Filter Switch,

Hinged Filter Door & Tool Free Access Panels

Options

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

6 Johnson Controls Unitary Products

356214-XIM-A-0108

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. Refer to the unit rating plate for the approved type of gas for this unit.

2. Install this unit only in a location and position as specified on Page 10 of these instructions.

3. Never test for gas leaks with an open flame. Use commercially available soap solution made specifically for the detection of leaks when checking all connections, as specified on Pages 8, 16, 17 and 40 of these instructions.

4. Always install unit to operate within the furnace's intended temperature-rise range with the duct system and within the allowable external static pressure range, as specified on the unit name/rating plate, specified on Page 42 of these instructions.

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

LIMITATIONS

These units must be installed in accordance with the following national and local safety codes:

In U.S.A

• National Electrical Code ANSI/NFPA No. 70.

• National Fuel Gas Code Z223.1.

• Gas-Fired Central Furnace Standard ANSI

• Local gas utility requirements. In Canada

• Current Canadian Electrical Code C22.1.

• Current Gas Installation Codes CSA-B149.1.

• Local plumbing and waste water codes.

• Other applicable local codes. Refer to the Unit Application Data table and to the Gas

Heat Application Data table. After installation, the unit must be adjusted to obtain a

temperature rise within the range specified on the unit rating plate.

Z21.47a.

FIRE OR EXPLOSION HAZARD FAILURE TO FOLLOW THE SAFETY WARN-

ING EXACTLY COULD RESULT IN SERIOUS INJURY, DEATH OR PROPERTY DAMAGE.

NEVER TEST FOR GAS LEAKS WITH AN OPEN FLAME. USE A COMMERICALLY AVAILABLE SOAP SOLUTION MADE SPECIFICALLY FOR THE DETECTION OF LEAKS TO CHECK ALL CONNECTIONS. A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

Johnson Controls Unitary Products 7

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

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

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

International

• Local Government/Agency Regulations

TABLE 1: UNIT APPLICATION DATA

UNIT MODEL NUMBER DM180 DM240 DM300

Voltage Variation,

Min. / Max.

Supply Air CFM, Min. / Max. 4,500 / 7,200 6,000 / 9,400 7,500 / 12,500

Wet Bulb Temperature (ºF) of Air on

Evaporator Coil, Min. / Max.

Dry Bulb Temperature (ºF) of Air on

Condenser Coil, Min. / Max.

Utilization range “A” in accordance with ARI Standard 110.

380/415-3-50 342/456

356214-XIM-A-0108

57 / 72

0 / 125

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.

3. Where a choice of location is possible, position the unit on either north or east side of building.

4. For ground level installation, use a level concrete 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 to support the weight of the unit and its options and/or accessories. Unit must be installed on a solid level roof curb or appropriate angle iron frame.

6. Maintain level tolerance to 1/2 inch maximum across the entire length or width of the unit.

Excessive exposure of this furnace to contaminated combustion air may result in equipment damage or personal injury. Typical contaminates include: permanent wave solutions, chlorinated waxes and cleaners, chlorine based swimming pool chemicals, water softening chemicals, carbon tetrachloride , Halogen type refrigerants, cleaning solvents (e.g. perchloroethylene), printing inks, paint removers, varnishes, hydrochloric acid, cements and glues, antistatic fabric softeners for clothes dryers, masonry acid washing materials.

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

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356214-XIM-A-0108

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 round lifting holes provided in the base rails. Spreaders, whose length exceeds the largest dimension across the unit, MUST BE USED. Refer to Figure 1.

Units may also be moved or lifted with a forklift, from the side only, providing that an accessory skid is us ed. LENGTH OF FORKS MUST BE A MINIMUM OF 90".

Refer to the Physical Data Table 7 for unit weights and to the Figures 2 or 12 for approximate center of gravity.

Before lifting a unit, make sure that all panels are in place and that its weight is distributed equally on all cables so it will lift evenly.

FIGURE 2 - CENTER OF GRAVITY

An adhesive backed label is provided over the outside of the combustion air inlet opening to prevent moisture from entering the unit, which could cause damage to electrical components. Allow this closure label to remain in place until the combustion air hood is to be installed (refer to Vent and Combustion Hood Figure 8).

CLEARANCES

All units require certain clearances for proper operation and service. Installer must make provisions for adequate combustion and ventilation air in accordance with Section 5.3, Air for Combustion and Ventilation of the National Fuel Gas Code, ANSI Z223.1 (in U.S.A.) or Sections 7.2, 7.3 or 7.4 of Gas Installation Codes CSA-B149.1 (in Canada) and/or applicable provisions of the local building codes. Refer to Dimensions and Clearances Figure 13 for the clearances required for combustible construction, servicing, and proper unit operation.

FIGURE 1 - TYPICAL RIGGING

Johnson Controls Unitary Products 9

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

DUCTWORK

Ductwork should be designed and sized according to the methods in Manual Q of the A ir Conditioning Contractors of America (ACCA).

A closed return duct system shall be used. This shall not preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be made with flexible joints to minimize noise.

The supply and return air duct systems should be designed for the CFM and static requirements of the job. They should NOT be sized to match the dimensions of the duct connections on the unit.

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 waterproofed.

Refer to Dimensions and Clearances Figure 13 for information concerning side and bottom supply and return air duct openings.

356214-XIM-A-0108

FIXED OUTDOOR AIR INTAKE DAMPER

This damper is shipped inside the return air compartment. It is completely assembled and ready for installation. A damper baffle inside of the hood is adjustable to provide variable amounts of outdoor air intake on units that are not provided with an economizer or a motorized damper option. Refer to the Fixed Outdoor Damper Figure 3.

Gasketing and mounting screws are provided in a parts bag attached to the hood assembly. Apply gasketing to the three flange surfaces on the hood prior to installing the hood. Extend gasketing 1/4 inch beyond the top and bottom of the two side flanges to insure adequate sealing.

Adjusting the damper to the desired air flow may be done before mounting the hood into position or after installation by removing the front hood panel or the screen on the bottom of the hood. Damper baffle in position 1 will allow approximately 10% outdoor air flow, position 2 approximately 15% and, to allow approximately 25%, remove the damper baffle.

On units with bottom return air application install the damper assembly over the opening in the side return air access panel. Remove and discard the opening cover and the covering over the hood mounting holes (used for shipping) before installing. Secure with the screws provided.

On units with side return air applications, install the damper assembly on the return air ductwork as close to the unit as possible. Cut an opening 16 inches high by 18 inches wide in the ductwork to accom m o da te the damper. Using the holes in the hood flanges as a template, drill 9/64 inch dia. (#26 drill) holes into the ductwork and secure with the screws provided.

NOTE: It is recommended that, in Canada, the outlet

duct be provided with a removable access panel. It is recommended that this opening be accessible when the unit is installed in service, and of a size such that smoke or reflected light may be observed inside the casing to indica te the presence of leaks in the heat exchanger. The cover should be attached in a manner adequate to prevent leakage.

10 Johnson Controls Unitary Products

If outdoor air intake will not be required on units with bottom return air applications, the damper assembly should still be mounted on the side return air access panel, per the instructions above, to insure moisture is not drawn into the unit during operation. The covering over the mounting holes only need be removed. Do not remove the opening cover.

356214-XIM-A-0108

FIGURE 3 - FIXED OUTDOOR AIR DAMPER

CONDENSATE DRAIN

COMPRESSORS

Units are shipped with compressor mountings factoryadjusted and ready for operation.

Do not loosen compressor mounting bolts.

FILTERS

Two-inch or four-inch filters can be supplied with each unit. Filters must always be installed ahead of the evaporator coil and must be kept clean or replaced with same size and type. Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shutdown. Minimum filter area and required sizes are shown in Physical Data Table 7.

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

NOTE: The condensate drain operates in a negative

pressure in the cabinet. The condensate drain line MUST be trapped to provide proper drainage. See Figure 4.

SERVICE ACCESS

The following removable panels provide access to all serviceable components:

• Compressor compartment

• Electric Heat compartment

• Gas Heat compartment (Two panels)

• Side Supply & Return Air compartments (Two panels)

• Blower compartment (Three panels)

• Main control box

• Filter compartment

• Outdoor Air compartment (Two panels)

Refer to the Dimensions and Clearances Figure 13 for location of these access panels.

FIGURE 4 - RECOMMENDED DRAIN PIPING

Make sure that all screws and panel latches are replaced and properly positioned on the unit to maintain an airtight seal.

Johnson Controls Unitary Products 11

356214-XIM-A-0108

THERMOSTAT

TERMINALS

OCC

TERMINALS ON

A LIMITED

NUMBER OF

THERMOSTATS

Second stage heating not required on single stage heating units.

Second stage cooling not required on single stage cooling units.

Jumper is required if there is no Smoke Detector circuit.

Jumper is required for any combination of R, RC, or RH.

OCC is an output from the thermostat to indicate the Occupied condition.

X is an input to the thermostat to display Error Status conditions.

CONTROL TERMINAL

BLOCK

OCC

Smoke

Detector

Jumper

24 VAC Class 2

FIGURE 5 - FIELD WIRING - DM ELECTRIC/ELECTRIC AND GAS/ ELECTRIC UNITS

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356214-XIM-A-0108

THERMOSTAT

The room 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 manufacturer's instructions enclosed with thermostat for general installation procedure. A minimum of seven color-coded insulated wires (#18 AWG) should be used to connect thermostat to unit.

POWER AND CONTROL WIRING

Field wiring to the unit must conform to provisions of the National Electrical Code, ANSI / NFPA No. 70 (in U.S.A.), current Canadian Electrical Code C22.1 (in Canada) 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 the Unit Application Data table.

The internal wiring harness furnished with this unit is an integral part of a CSA design certified unit. Field alteration to comply with electrical codes should not be required.

A fused disconnect switch should be field provided for the unit. The switch must be separate from all other circuits. Wire entry at knockout openings require conduit fittings to comply with NEC (in U.S.A.), CEC (in Canada) and/or local codes. Refer to the Dimensions and Clearances Figure 13 for installation location. If any of the wire supplied with the unit must be replaced, replacement wire must be of the type shown on the wiring diagram and the same minimum gauge as the replaced wire.

Electrical line must be sized properly to carry the load. Use copper conductors only. Each unit mu st be wired

with a separate branch circuit fed directly from the meter panel and properly fused.

When connecting electrical power and control wiring to the unit, waterproof type connectors MUST BE USED so that water or moisture cannot be drawn into the unit during normal operation. The above waterproofing conditions will also apply when installing a field-supplied disconnect switch.

Refer to the Typical Field Wiring Figure 5 and to the appropriate unit wiring diagram for control circuit and power wiring information.

TABLE 2: CONTROL WIRE SIZES

Wire Size

18 AWG 150 Feet

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

Maximum Length

OPTIONAL ELECTRIC HEAT

The factory-installed heaters are wired for single point power supply. Power supply need only be brought into the single point terminal block and thermostat wiring to the low voltage terminal strip located in the upper portion of the unit control box.

These CSA approved heaters are located within the central compartment of the unit with the heater elements extending into the supply air chamber. Refer to Figure 13 for access panel location.

Fuses are supplied, where required, by the factory. Some KW sizes require fuses and others do not. Refer to Table 3 for minimum CFM limitations and to Tables 8 and 9 for electrical data.

TABLE 3: ELECTRIC HEAT APPLICATION DATA

NOMINAL

HEATER SIZE

(KW)

18 380/415 4500 6000 7500 36 380/415 4500 6000 7500 54 380/415 5000 6000 7500 72 380/415 5000 6000 7500

Johnson Controls Unitary Products 13

VOLTAGE 3-PHASE,

50 HZ

15 TON 20 TON 25 TON

MINIMUM CFM UNIT SIZE

OPTIONAL GAS HEAT

356214-XIM-A-0108

These gas-fired heaters have aluminized-steel or optional stainless steel, tubular heat exchangers with spark ignition with proven pilot.

All gas heaters are shipped from the factory equipped for natural gas use, but can be field converted to L.P./ Propane with Kit Model # 1NP0418. See Gas Heat Application Data Table.

TABLE 4: GAS HEAT APPLICATION DATA

0 To

2,000 Feet

Above

Sea Level

Max. Min. Max. Min. Max. Max. Min. Max.

300 150 270 135 240 213 15, 20 & 25 Ton 279 20 50 350 175 320 160 280 241 25 Ton 326 30 60

2,000 To

4,500 Feet

Above

Sea Level

GAS PIPING

Proper sizing of gas piping depends on the cubic feet per hour of gas flow required, specific gravity of the gas and the length of run. "National Fuel Gas Code" Z223.1 (in U.S.A.) or the current Gas Installation Codes CSAB149.1 (in Canada) should be followed in all cases unless superseded by local codes or gas utility requirements. Refer to the Pipe Sizing Table 5.

Output Capacity (Mbh)

0 To

2,000 Feet

Above

Sea Level

2,000 To

4,500 Feet

Above

Sea Level

Available

on Models

Gas

Rate

(Ft./Hr.)

GAS CONNECTION

The gas supply line can be routed through the knockouts located on the front of the unit or through the opening provided in the unit's base. Refer to the Dimensions and Clearances Figure 13 to locate these access openings. Typical supply piping arrangements are shown in the figures on page 15. All shaded items are field-supplied.

Temp.

Rise ºF

Full Input

The heating value of the gas may differ with locality. The value should be checked with the local gas utility.

NOTE: There may be a local gas utility requirement

specifying a minimum diameter for gas piping. All units require a one-inch pipe connection at the entrance fitting.

TABLE 5: PIPE SIZING

Length in Feet

10 520 1,050 20 350 730 30 285 590 40 245 500 50 215 440 60 195 400 70 180 370 80 170 350 90 160 320

100 150 305

Maximum capacity of pipe in cubic feet of gas per hour. (Based upon a pressure drop of 0.3 inch water column and 0.6 specific gravity gas).

Nominal Iron Pipe Size

1 in. 1-1/4 in.

If gas supply line is routed through the unit's base ensure that the burner assembly can be removed for maintenance without disturbing the supply line. The supply piping and fittings must lie below the bottom gas manifold to avoid interference with the burner assembly.

Two grommets are shipped in the blower compartment (in parts bag taped to the blower housing) of every unit with gas heat and should be used in the knockouts when the gas piping penetrates the front of the unit.

After the gas supply piping has been installed, the bottom opening in the unit should be sealed to prevent water from leaking into the building.

Gas piping recommendations

1. A drip leg and a ground joint union must be installed in the gas piping.

2. When required by local codes, a manual shut-off valve may have to be installed outside of the unit.

3. Use wrought iron or steel pipe for all gas lines. Pipe compound should be applied sparingly to male threads only.

14 Johnson Controls Unitary Products

356214-XIM-A-0108

supply piping system at test pressures equal to or less than 1/2 psig (3.48kPa).

Natural gas may contain some propane. Propane, being an excellent solvent, will quickly dissolve white lead or most standard commercial compounds. Therefore, a special pipe compound must be applied when wrought iron or steel pipe is used. Shellac base compounds such as Gaskolac or Stalastic, and compounds such as Rectorseal #5, Clyde's or John Crane may be used.

4. All piping should be cleaned of dirt and scale by hammering on the outside of the pipe and blowing out the loose dirt and scale. Before initial start-up, be sure that all of the gas lines external to the unit have been purged of air.

5. The gas supply should be a separate line and installed in accordance with all safety codes as prescribed under "Limitations". After the gas connections have been completed, open the main shut-off valve admitting normal gas pressure to the mains. Check all joints for leaks with soap solution or other material suitable for the purpose. NEVER USE A FLAME.

7. A 1/8 inch NPT plugged tap, accessible for test gage connection, must be installed immediately upstream of the gas supply connection to the furnace.

FIGURE 6 - EXTERNAL SUPPLY CONNECTION

EXTERNAL SHUT-OFF

FIRE OR EXPLOSION HAZARD FAILURE TO FOLLOW THE SAFETY WARN-

ING EXACTLY COULD RESULT IN SERIOUS INJURY, DEATH OR PROPERTY DAMAGE.

6. The furnace and its individual manual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.48kPa).

The furnace must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas

FIGURE 7 - BOTTOM SUPPLY CONNECTION

EXTERNAL SHUT-OFF

L.P. UNITS, TANKS AND PIPING

All gas heat units are shipped from the factory equipped for natural gas use only. The unit may be converted in the field for use with L.P./propane gas with accessory kit model number 1NP0418.

All L.P./propane gas equipment must conform to the safety standards of the National Fire Protection Association.

Johnson Controls Unitary Products 15

356214-XIM-A-0108

For satisfactory operation, L.P./propane gas pressure must be 10.0 I.W.C. at the unit manifold under full load. Maintaining proper gas pressure depends on three main factors:

1. The vaporization rate depends on (a) the temperature of the liquid and (b) the "wetted surface" ar ea of the container or containers.

2. The proper pressure regulation. (Two-stage regula tion is recommended from the standpoint of both cost and efficiency.)

3. The pressure drop in the lines between regulators and between the second stage regulator and the appliance. Pipe size required will depend on the length of the pipe run and the total load of all appliances.

Complete information regarding tank sizing for vaporization, recommended regulator settings, and pipe sizing is available from most regulator manufacturers and L.P./propane gas suppliers.

L.P./propane gas is an excellent solvent and special pipe compound must be used when assembling piping for this gas as it will quickly dissolve white lead or most standard commercial compounds. Shellac base compounds such as Rectorseal #5 are satisfactory for this type of gas.

the blower compartment. These hoods must be installed to assure proper unit function. All hoods must be fastened to the outside of the gas heat access panel with the screws provided in the bag also attached to the blower housing.

The screen for the combustion air intake hood is secured to the inside of the access panel opening with four fasteners and the screws used for mounting the hood to the panel. The top flange of this hood slips in under the top of the access panel opening when in stalling. Refer to Vent and Combustion Air Hood Figure 8.

Each vent hood is installed by inser ting the top flange of the hood into the slotted opening in the access panel and securing in place.

The products of combustion are discharged horizontally through these two screened, hooded vent openings on the upper gas heat access panel.

SLOTTED

VENT AIR OUTLET HOODS

OPENINGS IN ACCESS PANEL

Check all connections for leaks when piping is completed, using a soap solution. NEVER USE A FLAME.

FIRE OR EXPLOSION HAZARD FAILURE TO FOLLOW THE SAFETY WARN-

ING EXACTLY COULD RESULT IN SERIOUS INJURY, DEATH OR PROPERTY DAMAGE.

VENT AND COMBUSTION AIR HOODS

Two vent hoods and a combustion air hood (with screens) are shipped attached to the blower housing in

COMBUSTION

IR INTAKE

HOOD

GAS HEAT ACCESS PANELS

FIGURE 8 - VENT AND COMBUSTION AIR HOOD

OPTIONAL ECONOMIZER/MOTORIZED DAMPER RAIN HOOD

The instruction for the optional economizer/motorized damper rain hood can be found in the kit. Use these instructions when field assembling an economizer rain hood onto a unit. The outdoor and return air dampers, the damper actuator, the damper linkage, the outdoor and return air divider baffles, and all the control sensors are factory mounted as part of the "Factory installed" economizer option.

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356214-XIM-A-0108

OPTIONAL POWER EXHAUST/BAROMETRIC RELIEF DAMPER RAIN HOOD

The instructions for the power exhaust/barometric relief damper rain hood can be found in the k it. The exha ust fan, all supporting brackets, angles, and the wiring are factory installed as part of the power exhaust option.

OPTIONAL ECONOMIZER AND POWER EXHAUST DAMPER SET POINT ADJUSTMENTS AND INFORMATION

Remove the economizer access panel from the unit. Loosen but do not remove the two panel latches. Locate the economizer control module, where the following adjustments will be made.

EXTREME CARE MUST BE EXCERCISED IN TURNING ALL SETPOINT, MAXIMIUM, AND MINIMUM DAMPER POSITIONING ADJUSTMENT SCREWS TO PREVENT TWISTING THEM OFF.

Check that the damper blades move smoothly without binding; carefully turn the Minimum Position Adjusting screw (found on the damper control module) fully clockwise and then set the thermostat indoor fan switch to the on position and then off, or energize and deenergize terminals "R" to "G".

MINIMUM POSITION ADJUSTMENT

POWER EXHAUST DAMPER SETPOINT

With power exhaust option, each building pressurization requirement will be different. The point at which the power exhaust comes on is determined 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% damper open.

• For a dual enthalpy operation, carefully turn the set point adjusting screw fully clockwise past the "D" setting.

INDOOR AIR QUALITY AQ

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 setpoint, the actuator is allowed to modulate normally in accordance with the enthalpy and mixed air sensor inputs. When the AQ signal exceeds it's setpoint setting and there is no call for free cooling, the actuator is proportionately 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 cooling, the damper position is limited by the IAQ Max damper position setting. When the signal exceeds it's setpoint (Demand Control Ventilation Setpoint) 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 air sensor input or the AQ voltage input.

With thermostat set to indoor fan on position, or terminals "R" to "G" energized, turn the Minimum Position Adjusting screw (located on the damper control module) counterclockwise until the desired minimum damper position has been attained.

ENTHALPY SET POINT ADJUSTMENT

The enthalpy set point may now be set by selecting the desired setpoint shown in the Enthalpy Setpoint Adjustment Figure 9. Adjust as follows:

• For a single enthalpy operation carefully turn the set point adjusting screw (found on the damper control module) to the "A", "B", "C" or "D" setting corresponding to the lettered curve of the Enthalpy Setpoint Adjustment Figure 9.

• For a dual enthalpy operation, carefully turn the set point adjusting screw fully clockwise past the "D" setting.

• Optional CO

Space Sensor Kit Part #

2AQ04700324

• Optional CO

Unit Sensor Kit Part # 2AQ04700424

Replace the economizer access panel.

OPTIONAL BAS-READY ECONOMIZER POWER EXHAUST DAMPER SET POINT ADJUSTMENT

Remove the economizer access panel from the unit. Loosen, but do not remove the two panel latches. Locate the economizer actuator, where the following adjustment can be made.

With power exhaust option, each building pressurization requirement will be different. The point at which the power exhaust comes on is determined by the economizer's outdoor damper position. The actuator's auxiliary switch adjustment screw should be set at the damper position at which the power exhaust is needed. The adjustment screw can be set between 25 to 85 degrees open.

Replace the economizer access panel.

Johnson Controls Unitary Products 17

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