APPENDIX M - Peabody District Court - YORK Y23 Rooftop Unit O M Manual.pdf

MASSACHUSETTS TRIAL COURT | REGION 3 CHILLER

SERVICE AGREEMENT

Region 3 Chiller Service Agreement RFP | Page 23 of 30

COMMONWEALTH OF MASSACHUSETTS

MASSACHUSETTS TRIAL COURT

REQUEST FOR PROPOSALS

Region 3 Chiller and Associated HVAC Equipment Preventive Maintenance and Repair Service Agreement

APPENDIX M

Peabody District Court - YORK Y23 Rooftop Unit O&M Manual

This appendix is incorporated by reference into the Region 3 Chiller Service Agreement Request for Proposals.

Facilities Management & Capital Planning

CONTENTS

NOMENCLATURE

GENERAL

SAFETY CONSIDERATIONS

INSTALLATION

GAS HEATING

START-UP

GAS FURNACE OPERATING INSTRUCTIONS. . . 68

MILLENNIUM SEQUENCE OF OPERATION

TROUBLESHOOTING A MILLENNIUM SIMPLICITY

CONTROL

THE MILLENNIUM SIMPLICITY CONTROL

SIMPLICITY PROGRAMMING OPTIONS

SETTABLE SYSTEM PARAMETERS

SERVICE

MAINTENANCE

See the following pages for a complete Table of Contents.

NOTES, CAUTIONS AND WARNINGS

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.

INSTALLATION

MANUAL

CAUTION: READ ALL SAFETY GUIDES BEFORE YOU

BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

MILLENNIUM™ ROOFTOP

25, 30 & 40 TON

102777-YIM-E-0206

MODELS: Y22

Y23

Y24

102777-YIM-E-0206

2 Unitary Products Group

TABLE OF CONTENTS

NOMENCLATURE

GENERAL

SAFETY CONSIDERATIONS

NOTES, CAUTIONS AND WARNINGS

GAS FIRED MODELS

WHAT TO DO IF YOU SMELL GAS

ALL MODELS

INSPECTION

REFERENCE

APPROVALS

INSTALLATION

LIMITATIONS

LOCATION

RIGGING AND HANDLING

CLEARANCES

DUCTWORK

AIR HOODS FOR FIXED OUTSIDE AIR

(UNITS WITHOUT ECONOMIZER)

AIR HOODS FOR ECONOMIZER

AIR HOODS FOR EXHAUST AIR

CONDENSATE DRAIN

SERVICE ACCESS

COMPRESSORS

FILTERS

THERMOSTAT (CONSTANT VOLUME UNITS)

SPACE SENSOR (VARIABLE AIR VOLUME UNITS). . . 14

POWER AND CONTROL WIRING

POWER WIRING DETAIL

ERV

GAS HEATING

GAS PIPING

GAS CONNECTION

VENT AND COMBUSTION AIR

233 & 466 MBH HEAT

699 MBH HEAT

ELECTRIC HEAT

HOT WATER HEAT

PIPING CONNECTIONS

STEAM HEAT

PIPING CONNECTIONS

STATIC PRESSURE CONTROL PLASTIC TUBING . . . 20

EXHAUST STATIC PRESSURE

CFM, STATIC PRESSURE, AND POWER - ALTITUDE

AND TEMPERATURE CORRECTIONS

START-UP

COMPRESSOR ROTATION

SUPPLY AIR FAN INSTRUCTIONS

CHECK BLOWER BEARING SET SCREWS

CHECKING SUPPLY AIR CFM

FAN ROTATION

BELT TENSION

AIR BALANCE

CHECKING AIR QUANTITY

SUPPLY AIR DRIVE ADJUSTMENT

SYSTEM SETPOINTS

CONSTANT VOLUME AND VARIABLE AIR VOLUME:

GAS FURNACE OPERATING

INSTRUCTIONS

TO LIGHT THE MAIN BURNERS

TO SHUT DOWN

POST-START CHECKLIST (GAS)

MANIFOLD GAS PRESSURE ADJUSTMENT

BURNER INSTRUCTIONS

ADJUSTMENT OF TEMPERATURE RISE

CHECKING GAS INPUT

NATURAL GAS

ELECTRIC HEATING

COOLING OPERATING INSTRUCTIONS

COMPRESSOR

INTERNAL WIRING

CONDENSER FANS

MILLENNIUM SEQUENCE OF OPERATION

OVERVIEW

RUN SEQUENCE

UNIT CONTROLS SEQUENCE

VARIABLE AIR VOLUME UNIT (VFD & IGV)

OVERVIEW

OCCUPIED / UNOCCUPIED / MORNING WARM-UP . . 73

OCCUPIED

UNOCCUPIED

MORNING WARM-UP [MWUP]

UNIT CONTROLS

HEAD PRESSURE CONTROL

DESCRIPTION

SEQUENCE OF OPERATION - FOR HEAD PRESSURE

CONTROL

INTELLI-START

LEAD LAG

DEVICES AND RULES

AIR PROVING SWITCH

FAN DELAYS:

COMFORT VENTILATION MODE

ECONOMIZER CONTROL DURING COMFORT

VENTILATION

STAGING CONTROL DURING COMFORT VENTILATION. . 79

HYDRONIC HEAT

COOLING LOCKOUT ON OAT

WATER COIL FREEZE STAT (FSI)

CV OPERATION

THERMOSTAT OPERATION FOR COOLING WITH Y1,

Y2, Y3 AND Y4 INPUTS

GROUPING COMPRESSORS INTO STAGES

ECONOMIZER MODE

Unitary Products Group 3

OPERATION FOR HEATING WITH W1, W2, AND W3

INPUTS

SUPPLY FAN OFF DELAY

HEAT STAGE DELAYS

THERMOSTAT OPERATION WITH HYDRONIC HEAT

SENSOR OPERATION

TYPES OF SPACE SENSORS

SUPPLY FAN CONTROL WHEN USING A ZONE SENSOR . 82

SUPPLY FAN OFF DELAY

CONTROL OF COMPRESSORS WHEN USING A ZONE

SENSOR

HEATING OPERATION WITH THE SENSOR OPTION

COOLING OPERATION WITH THE SENSOR OPTION

VAV OPERATION

VAV OPERATION WITH A THERMOSTAT

VAV OPERATION WITH A ZONE SENSOR

STANDALONE VAV OPERATION

SUPPLY FAN OFF DELAY

OCCUPIED HEATING WITH A THERMOSTAT

UNOCCUPIED HEATING WITH A THERMOSTAT

OCCUPIED COOLING WITH A THERMOSTAT

UNOCCUPIED COOLING WITH A THERMOSTAT

OCCUPIED HEATING WITH A SPACE SENSOR

UNOCCUPIED HEATING WITH A SPACE SENSOR

OCCUPIED COOLING WITH A SPACE SENSOR

UNOCCUPIED COOLING WITH A SPACE SENSOR

UNOCCUPIED HEATING IN STANDALONE OPERATION . . 85

OCCUPIED COOLING IN STANDALONE OPERATION

SUPPLY DUCT PRESSURE CONTROL ALGORITHM . 85

MORNING WARM UP / VAV OCCUPIED HEATING

CONTROL ALGORITHM

STARTING MORNING WARM UP

MORNING WARM UP / VAV OCCUPIED HEATING

FUNCTION

UNOCCUPIED VAV HEATING / COOLING CONTROL

ALGORITHM WITH A SPACE SENSOR

OCCUPIED VAV HEATING / COOLING CONTROL

ALGORITHM WITH A SPACE SENSOR

CONTROLLING EXCESSIVE SAT (SUPPLY AIR

TEMPERATURE)

SAT CONTROL CONFIGURATION

SAT CONTROL FOR COOLING

ECONOMIZER LOADING OPERATION DURING AN

EXCESSIVE SAT FOR COOLING:

CV ECONOMIZER OPERATION

SAT SETPOINTS USED DURING COOLING WITH

ECONOMIZER OPERATION

DEMAND VENTILATION

EXHAUST OPERATION

TWO-POSITION CONTROL (NON MODULATING POWER

EXHAUST)

PROPORTIONAL CONTROL (FAN WITH MODULATING

EXHAUST AIR DAMPER (EAD) CONTROLLED FROM

BUILDING STATIC PRESSURE)

PROPORTIONAL CONTROL WITH VFD FAN

TWO-POSITION CONTROL (POWER EXHAUST WITH

BAROMETRIC RELIEF, CONTROLLED FROM BUILDING

STATIC PRESSURE)

ERV

SCHEDULING OPERATION

COMPRESSOR STATUS MONITORING

TROUBLESHOOTING A MILLENNIUM SIMPLICITY

CONTROL

STATUS LED CHART

FAILURE MODES AND DEFAULT OPERATION

ERROR HISTORIES

SENSOR FAILURES AND DEFAULT OPERATION . . . 95

SAT SENSOR

RAT SENSOR

OAT SENSOR

OUTSIDE AIR RELATIVE HUMIDITY SENSOR

RETURN AIR RELATIVE HUMIDITY SENSOR

SPACE TEMPERATURE SENSOR

BUILDING PRESSURE SENSOR

DUCT STATIC PRESSURE SENSOR

IAQ SENSOR

SYSTEM ERRORS

HEATING SAT FAILURE

COOLING SAT FAILURE

SUPPLY FAN FAILURE

COMPRESSOR SAFETY CHAIN TRIP

DIRTY FILTER ALARM

HIGH DUCT STATIC ALARM

HOT WATER COIL FREEZE ALARM

THE MILLENNIUM SIMPLICITY CONTROL

INTRODUCTION AND OVERVIEW

DIAGNOSTICS VIA LED

ERROR HISTORY

DIGITAL LINGO

THE PI ALGORITHM

ANALOG TO DIGITAL CONVERTER

SOFTWARE TERMINOLOGY

COMMUNICATIONS BUS

OPTIONAL MODLINC TRANSLATOR

OVERVIEW

COMPONENT DESCRIPTION

THE SIMPLICITY CONTROLLER

WIRING AND TERMINATION, COMMUNICATIONS

COMMUNICATION ADDRESS:

ACRONYMS

INPUTS

ANALOG INPUTS (AI):

BINARY INPUTS (BI):

OUTPUTS

BINARY OUTPUTS (BO)

H1-3 - HEAT STAGES 1 TO 3 [OPTIONAL]

SIMPLICITY PROGRAMMING OPTIONS

INTERACTING THROUGH THE MILLENNIUM

SIMPLICITY

SET THE CLOCK

PARAMETER SETTING

INITIAL STARTUP OPTIONS

METRIC OPERATION (ENGLISH)

4 Unitary Products Group

SETTABLE SYSTEM PARAMETERS

SERVICE

REFRIGERATION SYSTEM

COMPRESSORS

MOTORS

INDOOR BLOWER MOTORS

POWER EXHAUST OR RETURN AIR FAN MOTORS

CONDENSER FAN MOTORS

DRAFT MOTOR (GAS FURNACE)

GAS FURNACE SAFETY FEATURES

COMBUSTION AIR PROVING

ROLLOUT

MAINTENANCE

NORMAL MAINTENANCE

FILTERS

MOTORS

FAN DRIVES

OUTDOOR COIL

GAS BURNER

TO CLEAN BURNERS

COMBUSTION AIR DISCHARGE

CLEANING FLUE PASSAGES AND HEATING ELEMENTS. 132

SECURE OWNERS APPROVAL

LIST OF FIGURES

Fig. # Pg. #

1 COMPONENT LOCATION

2 TYPICAL RIGGING

3 CENTER OF GRAVITY

4 RECOMMENDED DRAIN PIPING

5 TYPICAL THERMOSTAT WIRING

6 TYPICAL GAS PIPING CONNECTION

7 VENT AND COMBUSTION AIR HOODS

8 699 MBH HEAT VENT

9 FLUE EXTENSION

10 CLEARANCES

11 HOT WATER PIPING CROSS-SECTION

12 STEAM PIPING CROSS-SECTION

13 BOTTOM SUPPLY AND RETURN

14 END RETURN, BOTTOM SUPPLY

15 BOTTOM RETURN, FRONT & REAR SUPPLY

16 END RETURN, FRONT & REAR SUPPLY

17 FIELD INSTALLED DISCONNECT

18 PARTIAL ROOF CURB MODEL 1RC0455P

19 FULL ROOF CURB MODEL 1RC0455F

20 ALTITUDE/TEMPERATURE CONVERSION FACTOR 47

21 FAN PERFORMANCE - 25 TON

22 FAN PERFORMANCE - 30 TON

23 FAN PERFORMANCE - 40 TON

24 POWER EXHAUST - ONE FORWARD CURVE FAN -

25 TONS

25 POWER EXHAUST - TWO FORWARD CURVED FANS -

30 & 40 TONS

26 BELT TENSION ADJUSTMENT

27 TYPICAL GAS VALVE

28 TYPICAL FLAME APPEARANCE

29 COMFORT VENTILATION ECONOMIZER

CONTROL

30 SAT CONTROL BAND

31 SIMPLICITY CONTROLLER

32 SIMPLICITY CONTROLS PUSH BUTTONS

33 ANALOG TO DIGITAL CONVERTER

34 VFD CONTROL WIRING

35 SEQUENCE OF SETTING THE SET POINTS

36 HOT WATER COIL - 25 & 30 TON, 1 ROW,

AT 10 GPM

37 HOT WATER COIL - 25 & 30 TON, 1 ROW,

AT 20 GPM

38 HOT WATER COIL - 25 & 30 TON, 1 ROW,

AT 30 GPM

39 HOT WATER COIL - 25 & 30 TON, 1 ROW,

AT 40 GPM

40 HOT WATER COIL - 25 & 30 TON, 2 ROW,

AT 60 GPM

41 HOT WATER COIL - 25 & 30 TON, 2 ROW,

AT 80 GPM

42 HOT WATER COIL - 40 TON, 1 ROW, AT 10 GPM . 121

43 HOT WATER COIL - 40 TON, 1 ROW, AT 20 GPM . 121

44 HOT WATER COIL - 40 TON, 1 ROW, AT 30 GPM . 122

45 HOT WATER COIL - 40 TON, 1 ROW, AT 40 GPM . 122

46 HOT WATER COIL - 40 TON, 2 ROW, AT 20 GPM . 123

47 HOT WATER COIL - 40 TON, 2 ROW, AT 40 GPM . 123

48 HOT WATER COIL - 40 TON, 2 ROW, AT 60 GPM . 124

49 HOT WATER COIL - 40 TON, 2 ROW, AT 80 GPM . 124

50 STEAM COIL - 25 & 30 TON (1 ROW)

51 STEAM COIL - 40 TON (1 ROW)

52 TYPICAL CONTROL WIRING

53 LEGEND

54 TYPICAL 25 TON POWER WIRING

55 TYPICAL 30/40 TON POWER WIRING

56 TYPICAL GAS HEAT WIRING

57 TYPICAL FLUE BAFFLE

58 25 TON CHARGING CURVE

59 30 TON CHARGING CURVE

60 40 TON CHARGING CURVE

61 PRESSURE DROP DRY EVAPORATOR COIL VS

SUPPLY AIR CFM - 25 TON

62 PRESSURE DROP DRY EVAPORATOR COIL VS

SUPPLY AIR CFM - 30 & 40 TON

Unitary Products Group 5

LIST OF TABLES

Tbl. # Pg. #

1 COOLING & ELECTRICAL APPLICATION

2 COOLING & ELEC. APP. LIMITATIONS

3 GAS APPLICATION DATA

4 UNIT WEIGHTS

5 SUPPLY FAN MOTOR VFD WEIGHTS

6 EXHAUST FAN MOTOR VFD WEIGHTS

7 UNIT CORNERWEIGHT

8 UNIT CENTER OF GRAVITY

9 CONTROL WIRE SIZES

10 PIPE SIZES

11 GENERAL PHYSICAL DATA

12 REFRIGERANT CHARGE

13 ELECTRICAL DATA BASIC UNIT - 25 TON

14 ELECTRICAL DATA BASIC UNIT - 30 TON

15 ELECTRICAL DATA BASIC UNIT - 40 TON

16 ELECTRICAL DATA BASIC UNIT WITH ELECTRIC

HEAT - 25 TON

17 ELECTRICAL DATA BASIC UNIT WITH ELECTRIC

HEAT - 30 TON

18 ELECTRICAL DATA BASIC UNIT WITH ELECTRIC

HEAT - 40 TON

19 ELECTRICAL DATA BASIC UNIT WITH POWER

EXHAUST - 25 TON

20 ELECTRICAL DATA BASIC UNIT WITH POWER

EXHAUST - 30 TON

21 ELECTRICAL DATA BASIC UNIT WITH POWER

EXHAUST - 40 TON

22 ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST

& ELECTRIC HEAT - 25 TON

23 ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST

& ELECTRIC HEAT - 30 TON

24 ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST

& ELECTRIC HEAT - 40 TON

25 ALTITUDE CORRECTION FACTORS

26 FAN PERFORMANCE - 25 TON

27 FAN PERFORMANCE - 30 TON

28 FAN PERFORMANCE - 40 TON

29 COMPONENT STATIC RESISTANCE

30 SUPPLY FAN MOTOR AND DRIVE DATA

31 EXHAUST FAN DRIVE DATA

32 POWER EXHAUST - ONE FORWARD CURVED FAN

25 TON

33 POWER EXHAUST - TWO FORWARD CURVED

FANS - 30 & 40 TON

Tbl. # Pg. #

34 BELT ADJUSTMENT

35 BLOWER SPEED RATE OF CHANGE

36 25 TON DRIVE ADJUSTMENT

37 30 TON DRIVE ADJUSTMENT

38 40 TON DRIVE ADJUSTMENT

39 DRIVE ADJUSTMENT FOR POWER EXHAUST -

25 TON

40 DRIVE ADJUSTMENT FOR POWER EXHAUST -

30 & 40 TON

41 GAS RATE - CUBIC FEET PER HOUR

42 COOLING STAGE

43 COMPRESSOR MINIMUM OFF TIMES

44 WEEKLY SCHEDULE

45 HOLIDAY SCHEDULE

46 ALARM DEFAULT CODES

47 STATUS LED CHART

48 ACRONYMS

49 INPUT SIGNAL TO Y1 ACTUATOR POSITION

50 SIMPLICITY CONTROL INPUTS

51 SIMPLICITY CONTROL OUTPUTS

52 SETTABLE SYSTEM PARAMETERS

53 SYSTEM MOISTURE INDICATOR

54 STEAM COIL (1 ROW, 25 & 30 TON)

55 STEAM COIL (1 ROW, 40 TON)

56 STATIC RESISTANCE STEAM COIL

(25 & 30 TON)

57 STATIC RESISTANCE STEAM COIL (40 TON)

58 HOT WATER COIL (1 ROW 25 & 30 TON)

59 HOT WATER COIL (1 ROW, 40 TON)

60 WATER PRESSURE DROP (1 ROW,

25 & 30 TON)

61 WATER PRESSURE DROP (1 ROW, 40 TONS) . . . 116

62 HOT WATER COIL (2 ROW, 25 & 30 TON)

63 WATER PRESSURE DROP (2 ROW,

25 & 30 TON)

64 WATER PRESSURE DROP (2 ROW, 40 TON)

65 STATIC RESISTANCE HOT WATER COIL

(25 & 30 TON)

66 STATIC RESISTANCE HOT WATER COIL

(40 TON)

67 INDOOR BLOWER BEARING LUBRICATION

SCHEDULE

6 Unitary Products Group

NOMENCLATURE

Unitary Products Group 7

FIGURE 1 - COMPONENT LOCATION

FILTER ACCESS

EVAPORATOR COIL

AND DRAINPAN ACCESS

POWER & CONTROL WIRING

COMPRESSOR ACCESS

HEAT SECTION

POWER EXHAUST ACCESS

FILTER ACCESS

EVAPORATOR COIL

AND DRAINPAN ACCESS

HEAT SECTION

SUPPLY BLOWER & MOTOR

FILTER DRIERS

RIGHT

SIDE

LEFT SIDE

FRONT

REAR

REAR

8 Unitary Products Group

GENERAL

YORK Model Y22/Y23/Y24 units are single package cooling only or cooling with gas, electric, hot water or steam heating designed for outdoor installation on a rooftop and for non-res-idential use.

The units are completely assembled on rigid, permanently attached base rails. All piping, refrigerant charge, and electri-cal wiring is factory installed and tested. The units require electric power, gas, steam, or hot water connections and duct connections. Gas fired units also require installation of a flue gas outlet hood.

SAFETY CONSIDERATIONS

NOTES, CAUTIONS AND WARNINGS

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 instal-lation procedure is not handled properly.

GAS FIRED MODELS

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. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. If you cannot reach your gas sup-plier, call the fire department.

ALL MODELS

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

Untrained personnel can perform basic maintenance func-tions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel.

When working on air conditioning equipment, observe pre-cautions in the literature, tags and labels attached to the unit and other safety precautions that may apply.

Follow all safety codes, including ANSI Z223.1-Latest Edi-tion: wear safety glasses and work gloves; use quenching cloth for unbrazing operations; have fire extinguisher avail-able for all brazing operations.

INSPECTION

As soon as a unit is received, it should be inspected for possi-ble damage during transit. If damage is evident, the extent of damage should be noted on the carrier’s freight bill. A sepa-rate request for inspection by the carrier’s agent should be made in writing.

The furnace and its individual shut-off valve must be disconnected from the gas supply piping sys-tem during any pressure testing of that system at test pressures in excess of 0.5 psig. Pressures greater than 0.5 will cause gas valve damage resulting in a hazardous condition. If gas valve is subjected to a pressure greater than 0.5 psig, it must be replaced. The furnace must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pres-sure testing of that system at test pressures equal to or less than 0.5 psig.

This Furnace is not to be used for temporary heat-ing of buildings or structures under construction.

Before performing service or maintenance opera-tions on unit, turn off main power switch to unit.

Electrical shock could cause personal injury.

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

Unitary Products Group 9

REFERENCE

Additional information is available in the following reference forms:

• 036-21091-004 - Technical Guide

• TBD - Unit Replacement Parts List (25, 30 & 40 Tons)

APPROVALS

Designed certified by CGA, ETL, CETL as follows:

1. For use as a forced air furnace with cooling unit (gas heat models).

2. For outdoor installation only.

3. For installation on combustible material and may be installed directly on combustible flooring or Class A, Class B or Class C roof covering materials.

4. For use with natural gas (convertible to LP with kit).

Not suitable for use with conventional venting systems.

INSTALLATION

LIMITATIONS

The installation of this unit must conform to local building codes, or in the absence of local codes, with ANSI Z223.1 Natural Fuel Gas Code and /or CAN/CGA B149 installation codes.

In U.S.A.:

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

2. National Fuel Gas Code Z223.1-Latest Edition.

3. Gas-Fired Central Furnace Standard ANSI Z21.47-Lat-est Edition.

4. Local gas utility requirements.

Refer to Table 1 for Cooling and Electrical Application Data and to Table 2 for Gas Heat Application Data.

After installation, gas fired units must be adjusted to obtain a temperature rise within the range specified on the unit rating plate.

If components are to be added to a unit to meet local codes, they are to be installed at the contractor's and/or the cus-tomer'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).

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, position the unit on either north or east side of building.

3. Suitable for roof mount on curb.

4. Roof structures must be able to support the weight of the unit and its accessories. Unit must be installed on a solid level roof curb or appropriate angle iron frame.

5. Maintain level tolerance to 3/4 inches across width and 2 inches along length.

TABLE 1: COOLING & ELECTRICAL APPLICATION

UNIT POWER

SUPPLY

VOLTAGE VARIATIONS

MIN. VOLTS MAX VOLTS

575-3-60 540 630

208/230-3-60 187 252

460-3-60 432 504

TABLE 2: COOLING & ELEC. APP. LIMITATIONS

LIMITATIONS

MODEL

Y22 Y23 Y24

Supply Air CFM (min./max)

6,000- 12,5000

6,000- 15,000

8,000- 20,000

Entering Wet Bulb Temp (F°) (min./max) 57/75 57/75 57/75

Ambient Temp 40/120 40/120 40/120

Min. Air Temperature on Gas Fired Heat Exchangers (°F)

Aluminized 25 25 25

Stainless 0 0 0

10 Unitary Products Group

TABLE 3: GAS APPLICATION DATA

INPUT CAPACITY (MBH)

AVAILABLE

ON

MODELS

GAS

RATE1

(FT.3/HR.)

TEMP. RISE °F

AT FULL INPUT2 30 TO 2,000 FEET ABOVE

SEA LEVEL

3,000 FEET ABOVE

SEA LEVEL4

4,000 FEET ABOVE

SEA LEVEL4

MAX. MIN. MAX. MIN. MAX. MIN. MIN. MAX.

233 233 205 205 196 196 Y22, Y23, Y24 217 5 35

466 233 410 205 392 196 Y22, Y23, Y24 434 15 45

6995 233 615 205 587 196 Y24 650 20 50

1. Based on maximum input and 1075 Btu/Ft.3

2. The air flow must be adjusted to obtain a temperature rise within the range shown.

3. On VAV units, individual room damper boxes must go full open in heating mode to ensure airflow falls within temperature rise range.

4. For operation at elevations above 2,000 feet and, in the absence of specific recommendations from local authority having jurisdic-tion, equipment ratings shall be reduced at the rate of 4% for each 1,000 feet above sea level.

5. Minimum heating CFM for 699 MBH input heat is 11,700 CFM.

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 under-side.

If a unit is to be installed on an angle iron frame it is recommended that it be sized to allow the bot-tom rail to overhang to facilitate installation of con-densate drains (see Fig. 4).

FIGURE 2 - TYPICAL RIGGING

CABLES

SPREADER BARS

(3 PLACES)

20"

A

B

C

UNIT

UNIT

WEIGHT

(LB)

LIFTING LUG DIMENSIONS

A B C

25 TON

30 TON

40 TON

SEE NOTE 5

SEE NOTE 5

SEE NOTE 5

8' 4"

8' 4"

8' 4" 6' 9"

6' 9"

6' 9"

2' 3"

2' 3"

2' 3"

RIGGING:

1) RIG WITH 6 CABLES, THREE SPREADER BARS - 95" ACROSS WIDTH AND

SPREADER BARS OF LENGTH EQUAL TO "A + B".

2) CENTER OF GRAVITY INCLUDES ECONOMIZER, POWER EXHAUST AND

INLET GUIDE VANES.

3) CAUTION: ALL PANELS MUST BE SECURED IN PLACE WHEN THE UNIT

IS LIFTED.

4) CAUTION: THE CONDENSER COIL SHOULD BE PROTECTED FROM DAMAGE BY

THE RIGGING CABLES WITH PLYWOOD OR OTHER SUITABLE MATERIALS.

5) REFER TO INSTALLATION INSTRUCTIONS.

NOTICE TO RIGGERS

Unitary Products Group 11

NOTE: If the Millennium is VAV with ERV, add the weight of an exhaust VFD - it will be in the unit.

TABLE 4: UNIT WEIGHTS

COMPONENT 25 TON 30 TON 40 TON

Basic Unit 4350 4550 4950 Gas Heat

233 MBH 180 180 180

466 MBH 320 320 320

700 MBH - - 450

Electric Heat

40KW 40 40 40

80KW 105 105 105

108KW 110 110 110

Hot Water Heat

1 Row Coil 70 70 70 2 Row Coil 85 85 85

Steam Heat 1 Row Coil 85 85 85

Blower Forward Curve Fan (Std Fan) 0 0 0

FC IGV 155 155 175

Air Foil Fan 135 135 155

AF IGV 155 155 180

Motor - Supply Fan

7.5hp 110 - - 10hp 145 145 145 15hp 200 200 200 20hp 240 240 240 25hp - 300 300

Supply Fan Motor VFD See Table 5 Refrigeration

Hi Cap. Evap. Coil - 50 15 T-Coat Evap. 32 30 40 T-Coat cond. 32 30 40

Hot Gas Bypass 10 10 10 Low Ambient Head Pressure Control

208-230/380/460 5 5 5 575 25 25 25

Filters 6" Rigid 70 70 70

Exhaust1

1. If ERV and Supply Fan VAV are selected, add the weight of an Exhaust VFD, Table 5.

Exhaust Type Barometric 45 65 65 Modulated 140 275 275

Exhaust Motor 5hp 80 80 80

7.5hp 110 110 110 10hp 145 145 145 15hp 200 200 200

Exhaust Motor VFD See Table 6 Economizer

Std. Econ. 235 235 235 Econ. w/ERV 50 50 50

Control Disconnect 15 15 15 110V outlet 55 55 55 Optilogic 20 20 20

Roof Curb Partial Curb 415 415 415

Full Curb 615 615 615

TABLE 5: SUPPLY FAN MOTOR VFD WEIGHTS

Supply Fan Motor VFD 230V 460V 575V

W/O Bypass

7.5hp 60 25 30

10hp 60 25 30

15hp 75 50 60

20hp 75 50 60

25hp 115 50 60

W/Bypass

7.5hp 155 90 120

10hp 155 90 120

15hp 185 140 155

20hp 185 140 155

25hp 255 140 155

TABLE 6: EXHAUST FAN MOTOR VFD WEIGHTS

Exhaust Fan Motor 230V 460V 575V

W/O Bypass

5hp 15 10 20

7.5hp 50 15 20

10hp 50 15 20

15hp 65 40 50

25hp 255 140 155

FIGURE 3 - CENTER OF GRAVITY1

1. Refer to Tables 7 and 8 for A, B, C, D and X and Y data respectively.

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

The condenser coils should be protected from dam-age by the rigging cables with plywood or other suit-able material.

An adhesive backed cover is provided over the out-side of the combustion air inlet opening on gas fired units to prevent moisture from entering the unit which could cause damage to electrical compo-nents. Allow this closure label to remain in place until the combustion air hood is to be installed (Refer to Figures 7, 8, & 9).

RIGHT SIDE

C�E�N�T�E�R��O�F�� G�R�A�V�I�T�Y�

C�O�N�D�E�N�S�E�R� C�O�I�L��E�N�D�

LEFT SIDE

X�

Y�

8�3�"�

2�4�0�"�

A�

B�

C�

D�

12 Unitary Products Group

RIGGING AND HANDLING

This unit is not designed to be handled with a fork-truck.

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 holes pro-vided in lifting lugs. Spreaders MUST be used across the top of the unit. Refer to Figure 2.

• Rig with six cables and spread with four 95-inch spread-ers across width and two spreaders of length equal to A + B.

• Refer to Tables 4 and 7 for unit weight.

• Center of gravity includes economizer, exhaust or return air fan and inlet guide vanes (Refer to Table 8).

NOTES: Basic Unit = cooling only, 10hp FC fan.

+ Econ = +235lb + Heat = single stage gas, 180 lb + Power Exhaust = modulating 7.5hp

CLEARANCES

All units require certain clearances for proper operation and service. Installer must make provisions for adequate combus-tion and ventilation air in accordance with section 5.3, Air for Combustion and Ventilation of the National Fuel Gas Code ANSI Z223.1 or Sections 7.2, 7.3 or 7.4 of CAN/CGA B149 installation codes-Latest Edition and/or applicable provisions of the local building codes. Refer to Figure 10 for clearances required for combustible construction, servicing, and proper unit operation.

TABLE 7: UNIT CORNERWEIGHT

UNIT

DESCRIPTION

25 TON 30 TON 40 TON

A B C D A B C D A B C D

Basic Unit 1033 1033 1215 1215 1079 1053 1269 1294 1131 1131 1417 1417

Basic Unit With Economizer 1112 1112 1253 1253 1185 1157 1280 1308 1205 1205 1460 1460

Basic Unit With Economizer and

Gas or Electric Heat 1162 1162 1293 1293 1209 1155 1346 1400 1255 1224 1500 1531

Basic Unit With Economizer and

Gas or Electric Heat and Power Exhaust

1284 1284 1296 1296 1359 1298 1389 1449 1416 1384 1532 1563

TABLE 8: UNIT CENTER OF GRAVITY

MODEL

25 TON 30 TON 40 TON

X Y X Y X Y

Basic Unit 99” 46” 98” 45” 93” 46"

Basic Unit With Econ. 110” 46” 108” 45” 97” 46"

Basic Unit With Econ. & Gas or

Elect. Heat, Steam or Hot Water Heat

104” 45” 102” 44” 96” 45"

Basic Unit With Econ. & Gas or Elect. Heat, &

Power Exhaust

118” 45” 112” 44” 108” 45"

(COOLING OPERATION) Do not permit overhang-ing structures or shrubs to obstruct condenser air discharge outlet, combustion air inlet or vent out-lets.

Unitary Products Group 13

DUCTWORK

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

A closed return duct system should be used. This will not pre-clude 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.

When the unit is equipped with power exhaust fans or return air fan the return duct should have a 90 elbow before opening to the building space to abate noise.

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

If the unit is equipped with hot water or steam heat then the supply air direction will be down only.

AIR HOODS FOR FIXED OUTSIDE AIR

(UNITS WITHOUT ECONOMIZER)

These hoods are factory installed. The dampers may be adjusted by loosening the thumb screw, turning the lever to the desired position, and retightening the thumb screw.

AIR HOODS FOR ECONOMIZER

There are (3) economizer outside air intake hoods provided with the unit. The hood on the end of the unit is factory mounted. The (2) front and rear hoods are made operational per the following instructions.

Remove the screws holding the economizer hood shipping covers in place. Discard covers.

Rotate the hoods out (each hood is hinged in the lower cor-ner). Secure the hoods with screws along the top and sides.

Apply a bead of RTV sealer along the edge of both hoods and each pivot joint to prevent water leakage.

Seal any unused screw holes with RTV or by replacing the screw.

AIR HOODS FOR EXHAUST AIR

When furnished, these hoods and dampers are factory installed.

CONDENSATE DRAIN

There is one condensate drain connection. Trap the connec-tion per Figure 4. The trap and drain lines should be pro-tected from freezing.

Plumbing must conform to local codes. Use a sealing com-pound on male pipe threads. Install condensate drain lines from the 1-1/2 inch NPT female connections on the unit to an open drain.

(GAS HEATING OPERATION)

Excessive exposure to contaminated combustion air will result in safety and performance related problems. To maintain combustion air quality, the recommended source of combustion air is the out-door air supply.

The outdoor air supplied for combustion should be free from contaminants due to chemical exposure that may be present from the following sources:

• Commercial buildings

• Indoor pools

• Laundry rooms

• Hobby or craft rooms

• Chemical storage areas

The following substances should be avoided to maintain outdoor combustion air quality:

• Permanent wave solutions

• Chlorinated waxes and cleaners

• Chlorine based swimming pool cleaners

• Water softening chemicals

• De-icing salts or chemicals

• Carbon tetrachloride

• Halogen type refrigerants

• Cleaning solvents (such as perchloroethylene)

• Printing inks, paint removers, varnishes, etc.

• Hydrochloric acid

• Cements and glues

• Antistatic fabric softeners for clothes dryers

• Masonry acid washing materials

14 Unitary Products Group

SERVICE ACCESS

Access to all serviceable components is provided by the fol-lowing hinged doors:

• Furnace compartment

• Supply Air Fan compartment Evaporator Coil compart-ment (three doors)

• Filter compartment economizer compartment (two doors)

• Power Exhaust compartment (two doors)

• Main control panels (one door)

Refer to Figure 1 for location of these access panels.

COMPRESSORS

Units are shipped with compressor mountings factory-adjusted and ready for operation.

FILTERS

Throwaway or rigid filters are supplied with each unit. Filters must always be installed ahead of evaporator coil and must be kept clean or replaced with same size and type. Dirty fil-ters will reduce the capacity of the unit and will result in frosted coils or safety shutdown. Required filter sizes are shown in Table 11. The unit should not be operated without filters properly installed.

THERMOSTAT (CONSTANT VOLUME UNITS)

The thermostat, if used, 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 sensor for general installation procedure (See Figure 5).

Refer to Table 9 for control wire sizing and maximum length.

SPACE SENSOR (VARIABLE AIR VOLUME UNITS)

The space sensor, if used, should be located on an inside wall approximately 56 inch 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 sensor for general installation procedure.

FIGURE 4 - RECOMMENDED DRAIN PIPING

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

DO NOT loosen compressor mounting bolts.

FIGURE 5 - TYPICAL THERMOSTAT WIRING

TABLE 9: CONTROL WIRE SIZES

WIRE SIZE MAXIMUM LENGTH

20 AWG 100 Feet

18 AWG 150 Feet

Unitary Products Group 15

POWER AND CONTROL WIRING

Field wiring to the unit must conform to provisions of National Electrical Code (NEC) ANSI / NFPA 70-Latest Edition and / or local ordinances. The unit must be electrically grounded in accordance with the NEC and / or local codes. Voltage toler-ances 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 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.

Power supply to the unit must be NEC Class 1 and must comply with all applicable codes. A disconnect switch must be provided (factory option available). The switch must be separate from all other circuits. Wire entry at knockout open-ings requires conduit fittings to comply with NEC and/or Local Codes. Refer to Figures 13, 14, 15, and 16 for installation location of openings.

If installing a field mounted disconnect on the unit, refer to Figure 17 for the recommended mounting location. Unit-strutTM or equivalent rails should be mounted as shown to provide structure for mounting. The location of the rails should be adjusted to fit the disconnect within the dimensions shown. Conduit run from the disconnect to the power entry location in the baserail should be routed so that it does not interfere with the doors of the unit access panels.

NOTE: Since not all local codes allow the mounting of a dis-connect on the unit, please confirm compliance with local code before mounting a disconnect on the unit.

Electrical wiring must be sized properly to carry the load.

Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly fused.

Refer to Figure 5 for typical field wiring and to the appropriate unit wiring diagram mounted inside control doors for control circuit and power wiring information.

POWER WIRING DETAIL

Units are factory wired for the voltage shown on the unit nameplate. The main power block requires copper wires.

Refer to Electrical Data Tables 13 through 24 to size power wiring, fuses and disconnect switch. All field supplied wiring, fuses and disconnects must comply with applicable NEC codes.

Power wiring is brought into the unit through the side of the baserail or the bottom of the unit/control box inside the curb.

The baserail has a 2-1/2” diameter hole for field wiring and a 3-5/8” hole is provided for a through-the-curb connection. A removable patch plate covers both the openings.

ERV

The ERV [Energy Recovery Ventilation] is a separate air han-dler that attaches to the exhaust end of the 25-40T Millen-nium packaged rooftop unit. The ERV is shipped separately and assembled to the Millennium at the jobsite. An 'ERV' Mil-lennium is shipped with an end configuration and electric hookups designed to mate with the ERV. This option is avail-able only with the Simplicity control, and no other power exhaust option can be supplied if an ERV is selected.

The ERV incorporates a rotating heat exchange wheel and a pair of exhaust blowers. It exhausts return air through the wheel, capturing the thermal energy of the exiting hot or cold air as it passes. As the wheel rotates, the incoming airstream, pulled through by the supply fan, regains that energy.

The Millennium ERV has a terminal block and mating con-nectors to simplify hooking up the two systems. The controls of both units are factory set to interact properly. Power for the ERV blower motors and controls is provided through the Mil-lennium unit. The Millennium /ERV dataplate information includes the ERV electrical load.

The Millennium Simplicity control has parameters for the ERV; ref. the parameter list. When economizer and ERV options are selected on the same unit, the Simplicity control and the ERV have specific connections and internal rules for that operation.

Also refer to the ERV Installation Instructions packaged with the ERV.

Use care to avoid damage when drilling holes for the disconnect mounting.

When connecting electrical power and control wir-ing to the unit, waterproof 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.

Waterproof connections MUST be used to ensure that water cannot penetrate the roof or roof curb.

16 Unitary Products Group

GAS HEATING

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-Latest Edition should be followed in all cases unless superseded by local codes or gas company requirements. Refer to Table 10.

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 specify-ing a minimum diameter for gas piping. All units require a 1-1/4 inch pipe connection at the entrance fitting. Line should not be sized smaller than the entrance fitting size.

GAS CONNECTION

The gas supply line should be routed within the space and penetrate the roof at the gas inlet connection of the unit.

Refer to Fig. 13 -- 16 to locate the access opening. Typical supply piping arrangements are shown in Figure 5.

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 will have to be installed outside of the unit.

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

4. All piping should be cleaned of dirt and scale by ham-mering on the outside of the pipe and blowing out the loose particles. 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 com-pleted, open the main shutoff valve admitting normal gas pressure to the mains. Check all joints for leaks with

On VAV units with gas fired furnace, ALL INDIVID-

UAL ROOM DAMPER BOXES MUST BE CON-

TROLLED FULL OPEN DURING HEATING

OPERATION TO ENSURE PROPER AIRFLOW

OVER THE FURNACE. A control contact between D1 and D2 on TB3 is provided for the damper box interlock. This contact is normally open, thus is closed during heating operation.

TABLE 10: PIPE SIZES

LENGTH IN

FEET

NOMINAL IRON PIPE, SIZE

1-1/4 IN.1

1. 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.

1-1/2 IN.1 2 IN.1

10 1,050 1,600 3,050

20 730 1,100 2,100

30 590 890 1,650

40 - 760 1,450

50 - - 1,270

60 - - 1,150

70 - - 1,050

80 - - 990

FIGURE 6 - TYPICAL GAS PIPING CONNECTION

Natural gas may contain some propane. Propane, being an excellent solvent, will quickly dissolve white lead or most standard commercial com-pounds. Therefore, a special pipe dope 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.

Unitary Products Group 17 soap solution or other material suitable for the purpose.

NEVER USE A FLAME

6. The furnace and its individual manual shut-off valve must be disconnected from the gas supply piping system dur-ing any pressure testing of that system at test pressures in excess of 0.5 psig.

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

VENT AND COMBUSTION AIR

NOTE: All the hoods and hardware are shipped within the evaporator section. Each hood must be properly attached to the furnace doors to assure proper operation and compliance with CSA/ETL safety cer-tification. (Refer to Figure 7 and 8)

The products of combustion are discharged horizontally through hooded openings in the gas heat access doors.

233 & 466 MBH HEAT

(Figure 7)

1. Remove the shipping covers that are attached to the heat section door covering the flue outlets.

2. Locate the flue which is shipped in the evaporator sec-tion.

3. Place the flue over the flue outlet with the diverter angles facing up toward the top of the unit and attach with screws provided.

4. Refer to the Gas Furnace Operation Instruction in the Start-up Section of this manual for further instructions.

699 MBH HEAT

(Figure 8)

1. Remove the shipping covers that are attached to the heat section door covering the flue outlets.

2. Locate the flue duct extensions and flue which are shipped between the evaporator and filter section.

Disconnect gas piping from unit when leak testing at pressures greater than 0.5 psig. Pressures greater than 0.5 psig will cause gas valve damage resulting in a hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig, it must be replaced.

FIGURE 7 - VENT AND COMBUSTION AIR

HOODS

FIGURE 8 - 699 MBH HEAT VENT

FIGURE 9 - FLUE EXTENSION

18 Unitary Products Group

3. Place the flue extension (Figure 9) on the flue duct of each furnace section and attach with screws provided.

4. Place the flue in position with the diverter angles facing up toward the top of the unit and attach with screws pro-vided.

5. Place the wind shield over the louvers on the right side of the burner access door and attach with screws provided.

6. Refer to the Gas Furnace Operation Instructions in the Start-up Section of this manual for further information.

ELECTRIC HEAT

Units with electric heat are fully wired and operational when shipped. Constant volume units are designed for two equal steps of capacity for 80 and 108 kWH heat; 40 kW heat is one step only. VAV units are one full step at full heat capacity.

HOT WATER HEAT

The YORK Millennium units (25, 30, and 40 Ton sizes) can be furnished with a YORK hot water coil as the heat source. One or two row coil units will be factory installed in the heating section.

NOTE: The hot water control valve will not be provided. The installer will need to purchase a hot water control valve, to connect the hot water piping and power wiring at the job site for the hot water heat section to be operational.

NOTE: For all hot water coils the entering water tempera-ture should not exceed 200°F.

The hot water coil is located downstream of the supply air fan and just above the supply air opening in the bottom of the unit.

Refer to Tables 58 through 66 and Figures 36 through 49 for flow rate and capacity.

FIGURE 10 - CLEARANCES

60"

REAR

60"

FRONT

60"

ENDS

10'

60"

ENDS

REQUIRED CLEARANCES

LEFT

RIGHT

REAR

FRONT

TOP

60" 60" 60" 60" 10'

* Right is the side with access to the Electrical / Gas Controls.

* is the side with the Condenser Coils

NOTE: DONOT use the unit roof to support any type of structure or bracing.

Front

DO NOT use hot water coils as steam coils under any circumstances.

All piping, control valves, and wiring that is field installed must be properly insulated and conform to all local and national codes.

Unitary Products Group 19

PIPING CONNECTIONS

The hot water pipping must enter the unit through the floor of the heat section compartment. The access doors to the com-partment are gasketed so the compartment can be sealed.

However, as added protection for water leakage into the space, the piping access holes should be sealed with a heat resistant mastic Figure 11 shows the location of the compart-ment and piping connections.

STEAM HEAT

The YORK Millennium units (25, 30 and 40 Ton sizes) can be furnished with a YORK single row steam coil. YORK steam coils are a factory installed option.

There are no provisions in the coil or control sequence to prevent freezing of condensate. The control valve, piping and field installed wiring con-nections are particularly vulnerable because they are installed in the vestibule outside of the condi-tioned air stream. The installing party will be responsible for properly insulating and installing power and control wiring, to the actuator and pip-ing.

In one row hot water coil systems DO NOT exceed a 40 gallons per minute flow rate.

In two row hot water coil systems Do Not exceed a 80 gallons per minute flow rate

Condensate will freeze on the control valve and piping if they are not properly insulated. Insulating the control valve and piping is the responsibility of the installing party.

Piping access holes should be sealed with a heat resistant mastic to prevent damage to equipment.

DO NOT use tin based solder. Brazing with tin based solder could cause equipment damage or possible injury to tenets of the structure that is being conditioned.

FIGURE 11 - HOT WATER PIPING CROSS-SEC-

TION

FIGURE 12 - STEAM PIPING CROSS-SECTION

20 Unitary Products Group

NOTE: The steam control valve, power and control wiring to the actuator of the valve is the responsibility of the installing party.

PIPING CONNECTIONS

Refer to Tables 54 through 57 and Figures 50 and 51 for flow rate and capacity.

The steam piping must enter the unit through the floor of the heat section compartment. The access doors to the compart-ment are gasketed so the compartment can be sealed. How-ever, as added protection for condensate leakage into the space, the piping access holes should be sealed with a heat resistant mastic. The following figure illustrates the location of the compartment and piping connections.

STATIC PRESSURE CONTROL PLASTIC TUBING

On units with inlet guide vanes (IGV's) and variable fre-quency drives on the supply blower and/or power exhaust fans, pressure sensing tubing must be field supplied and installed from differential pressure switches or transducers to the locations in the building or ductwork where a constant pressure is desired, and to the atmosphere.

The supply air discharge static pressure switch or transducer is located in the blower compartment on the heat section par-tition panel. Plastic tubing (1/4") must be run from the high pressure tap of the transducer to a static pressure tap (field supplied) in the supply duct located at a point where constant pressure is desired. Tubing must also be run between the low pressure tap of the transducer to atmospheric pressure.

EXHAUST STATIC PRESSURE

If a modulating power exhaust is installed, there will be a building pressure sensor (BPS) in the control box directly below the Millennium Simplicity. This ± .25 0-5VDC trans-ducer sends a building pressure signal to the control. A sens-ing tube must be installed from a representative location in the building to the HI power of the transducer.

Changing the adjustment is done to the building pressure parameter in the control.

All piping and control valves, and wiring that is field installed must be properly insulated and con-form to all local and national codes.

There are no provisions in the coil or control sequence to prevent freezing of condensate. The control valve, piping and field installed wiring con-nections are particularly vulnerable because they are installed in the vestibule outside of the condi-tioned air stream. The installing party will be responsible for properly insulating and installing power and control wiring, to the actuator and pip-ing.

DO NOT use steam coils as hot water coils under any circumstances.

In steam coil systems, the steam pressure shall not exceed 15 PSI.

Piping access holes should be sealed with a heat resistant mastic to prevent damage to equipment.

DO NOT use tin based solder. Brazing with tin based solder could cause equipment damage or possible injury to tenets of the structure that is being conditioned.

Do not run plastic tubes in the supply or return air ducts as air movement could cause erroneous sensing. If tubes penetrate bottom of unit be sure openings are sealed against air and water leak-age.

Unitary Products Group 21

TABLE 11: GENERAL PHYSICAL DATA

UNIT SIZE 25 TON 30 TON 40 TON

Unit EER 10.0 9.5 9.5

Compressor Data Number/Size 2 x 13 Ton 3 x 10 Ton 4 x 10 Ton

Type Scroll Scroll Scroll Unit Capacity Steps 50%, 100% 33%, 67%, 100% 25%, 50%, 75%, 100%

Indoor Fan and Drive Number / Type 1 / FC 1 / FC 1 / FC

Diameter x Width (inches) 22 x20 22 x 20 25 x 22 HP Range 7.5 - 20 10 - 25 10 - 25

CFM Range (full load) 6,000 - 12,500 6,000 - 15,000 8,000 - 18,000 ESP Range 0.2” - 4.0” 0.2" - 4.0” 0.2" - 4.0"

Exhaust Fan Number/Size/Type 1/FC 2/FC 2/FC

HP Range (single motor) 5 - 10 7.5 - 15 7.5 - 15

CFM 3,000 - 9,000 4,000 - 18,000 4,000 - 18,000

Standard Evaporator Coil Size (sq. ft.) 26.0 26.0 30.4 Rows/FPI 3 / 13 3 / 16 4 / 13

High Capacity Evaporator Coil Size (sq. ft.) 26.0 26.0 30.4 Rows/FPI 3/13 4 / 16 4 / 16

Condenser Coil Size (sq. ft.) 52.0 48.8 65.0 Rows/FPI 2/16 2 /16 2 /16

Condenser Fans Quantity / Diameter (inches) 4 / 24 3 / 24 4 / 24

Nominal CFM 4,600 6,800 6,800 Motor HP 3 / 4 1.0 1.0

Electric Heat kW Range 40 - 108 40 - 108 40 - 108

40 kW Capacity Steps 1 1 1 80 and 108 kW Capacity Steps (CV/VAV) 2 / 1 2 / 1 2 / 1

Natural Gas Heat 233 MBH Capacity Steps (CV/VAV) 1 / 1 1 / 1 1 / 1 466 MBH Capacity Steps (CV/VAV) 2 / 1 2 / 1 2 / 1 699 MBH Capacity Steps (CV/VAV) - 2 / 1 3 / 1

Hot Water Coil Size (inches) 22.5” X 65” 22.5" X 65" 22.5" X 65"

Capacity 25 Ton 30 Ton 40 Ton Steam Coil

Size (inches) 21" X 65" Type Steam Coil

Filters 2" Hi. Eff. TA Number / Size 4 / 16 x 25 & 6 / 20 x 25 4 / 16 x 25 & 6 / 20 x 25 4 / 16 x 25 & 6 / 20 x 25

Face Area (sq. Ft.) 30.4 30.4 30.4 Filters 2" Pleated, 65%

Number / Size 4 / 16 x 25 & 6 / 20 x 25 4 / 16 x 25 & 6 / 20 x 25 4 / 16 x 25 & 6 / 20 x 25 Face Area (sq. Ft.) 30.4 30.4 30.4

Filters 65% Rigid w/ 2" TA Prefilters Number / Size 4 / 16 x 25 & 6 / 20 x 25 4 /16 x 25 & 6 / 20 x 25 4 / 16 x 25 & 6 / 20 x 25

Face Area (sq. Ft.) 30.4 30.4 30.4 Filters 95% Rigid w/ 2" TA Prefilters

Number / Size 4 / 16 x 25 / 6 / 20 x 25 4 / 16 x 25 / 6 / 20 x 25 4 / 16 x 25 / 6 / 20 x 25 Face Area (sq. Ft.) 30.4 30.4 30.4

22 Unitary Products Group

TABLE 12: REFRIGERANT CHARGE

UNIT (TONS) MODEL TYPE FACTORY/ FIELD

CHARGED

CHARGE

SYS #1 SYS #2 SYS #3 SYS #4

25 wo/HGBP R22 Factory 27 lb. / 0 oz. 26lb / 0oz - -

25 w/HGBP R22 Factory 27 lb. / 8 oz. 26 lb. / 0oz - -

30 wo/HGBP R22 Factory 13 lb. / 4 oz. 13 lb. / 8 oz. 13 lb. / 8 oz. -

30 w/HGBP R22 Factory 14 lb. / 0 oz. 13 lb. / 8 oz. 13 lb. / 8 oz. -

30 wo/HGBP1 R22 Factory 14 lb. / 6 oz. 14 lb. / 10 oz. 14 lb. / 10 oz. -

30 w/HGBP1 R22 Factory 15 lb. / 2 oz. 14 lb. / 10 oz. 14 lb. / 10 oz. -

40 wo/HGBP R22 Factory 15 lb. / 5 oz. 15 lb. / 4 oz. 15 lb. / 5 oz. 15 lb. / 15 oz.

40 w/HGBP R22 Factory 15 lb. / 13 oz. 15 lb. / 4 oz. 15 lb. / 5 oz. 15 lb. / 15 oz.

1. With high capacity evaporator coil.

TABLE 13: ELECTRICAL DATA BASIC UNIT - 25 TON

VOLTAGE

COMPRESSORS COND. FAN MOTOR SUPPLY AIR MOTOR BASIC UNIT

QTY. RLA LRA QTY FLA HP FLA MCA MAX OVERCURRENT

PROTECTION DEVICE

208-3-60 2 45.7 350 4 7.6 ea.

7.5 24.2 157 200

10 30.8 164 200

15 46.2 180 225

20 59.4 196 250

230-3-60 2 45.7 350 4 6.9 ea.

7.5 22.0 152 175

10 28.0 158 200

15 42.0 172 200

20 54.0 187 225

460-3-60 2 24.3 158 4 3.5 ea.

7.5 11.0 80 100

10 14.0 83 100

15 21.0 90 110

20 27.0 96 110

575-3-60 2 19.3 125 4 3.0 ea.

7.5 9.0 64 80

10 11.0 66 80

15 17.0 72 90

20 22.0 78 100

Unitary Products Group 23

TABLE 14: ELECTRICAL DATA BASIC UNIT - 30 TON

VOLTAGE

COMPRESSORS COND. FAN MOTOR SUPPLY AIR MOTOR BASIC UNIT

QTY. RLA LRA QTY. FLA TOTAL HP FLA MCA MAX. OVERCURRENT

PROTECTION DEVICE

208-3-60 3 38.5 228 3 4.0 ea. 12.0

10 30.8 168 200

15 46.2 185 225

20 59.4 202 250

25 74.8 221 250

230-3-60 3 38.5 255 3 3.6 ea. 10.8

10 28 164 200

15 42 179 200

20 54 194 225

25 68 211 250

460-3-60 3 18.8 127 3 2.2 ea. 6.6

10 14 81 90

15 21 88 100

20 27 96 110

25 34 104 125

575-3-60 3 15.7 100 3 1.4 ea. 4.2

10 11 66 80

15 17 73 80

20 22 79 100

25 27 85 110

TABLE 15: ELECTRICAL DATA BASIC UNIT - 40 TON

VOLTAGE

COMPRESSORS COND. FAN MOTOR SUPPLY AIR MOTOR BASIC UNIT OVERCURRENT

PROTECTION DEVICE

QTY. RLA LRA QTY. FLA TOTAL HP FLA MCA MAX. OVERCURRENT

PROTECTION DEVICE

208-3-60 4 38.5 228 4 4.0 ea. 12.0

10 30.8 210 225

15 46.2 228 250

20 59.4 244 300

25 74.8 264 300

230-3-60 4 38.5 255 4 3.6 ea. 14.4

10 28 206 225

15 42 221 250

20 54 236 250

25 68 253 300

460-3-60 4 18.8 127 4 2.2 ea. 8.8

10 14 101 110

15 21 109 125

20 27 116 125

25 34 125 150

575-3-60 4 15.7 100 4 1.4 ea. 5.6

10 11 83 90

15 17 90 100

20 22 96 110

25 27 102 125

24 Unitary Products Group

TABLE 16: ELECTRICAL DATA BASIC UNIT WITH ELECTRIC HEAT - 25 TON

VOLTAGE

ELECTRIC HEAT SUPPLY AIR MOTOR BASIC UNIT W/ ELECTRIC HEAT

NOMINAL KW APPLIED KW HP FLA MCA MAX OVERCURRENT

PROTECTION DEVICE

208-3-60

40 30

7.5 24.2 157 200 10 30.8 164 200…