York Eco Hfc 410a User Manual

FORM 100.50-EG5 (108)

Packaged Rooftop

Air-Conditioning Units

(Simplicity Elite with HFC-410a refrigerant)

00873VIP

ASHRAE

90.1

COMPLIANT

50 THROUGH 65 TONS

MEA

231-02-E

FORM 100.50-EG5 (108)

Table of Contents

Introduction................................................................2

Features and Beneﬁts ...............................................4

Application Data ........................................................8

Nomenclature..........................................................13

Physical Data...........................................................14

Altitude and Temperature Corrections.....................17

Cooling Performance Data......................................19

Supply Fan Data......................................................23

Component Static Pressure Drops..........................24

Exhaust Fan Data....................................................25

Electrical Data .........................................................26

Controls...................................................................28

General Arrangement Drawings..............................32

Unit Weights ............................................................36

Guide Speciﬁcations................................................38

10 Cooling Performance Data – 060 Model..........21

11 Cooling Performance Data – 061 Model..........22

12 Supply Fan Performance – Forward-Curved ...23

13 Supply Fan Performance – Airfoil ....................23

14 Component Static Pressure Drops ..................24

15 Exhaust Fan Performance ...............................25

16 Compressor Electrical Data .............................26

17 Power Supply Voltage Limits ...........................26

18 Supply and Exhaust Fan Motor

Electrical Data - ODP.......................................27

19 Supply and Exhaust Fan Motor

Electrical Data - TEFC .....................................27

20 Condenser Fan Motor RLA..............................27

21 Miscellaneous Electrical Data..........................27

22 Power-Supply-Conductor Size Range .............31

23 Unit Weights.....................................................36

24 Unit Center of Gravity ......................................36

25 Unit Corner Weights.........................................37

TABLES

1 Supply-Air-Duct Connection Conﬁgurations ......9

2 Return-Air-Duct Connection Conﬁgurations.......9

3 Physical Data...................................................14

4 Efﬁciency Ratings ............................................16

5 Physical Data – Unit EER ................................16

6 Physical Data – Compressors..........................16

7 Altitude Correction Factors ..............................17

8 Cooling Performance Data – 050 Model..........19

9 Cooling Performance Data – 051 Model..........20

FIGURES

1 Traditional Overhead VAV Air Delivery

System.............................................................10

2 Altitude/Temperature Conversion Factor .........18

3 Bottom Supply/Bottom Return Drawing ...........32

4 Side Supply/Rear Return Drawing...................33

5 Bottom Supply/Side Return Drawing ...............34

6 Curb Layout Drawing .......................................35

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Features and Beneﬁts

AIRFLOW CONFIGURATIONS

external, lockable handle (in compliance with Article

440-14 of N.E.C.). This option provides a means to

isolate the unit power voltage for servicing. Others must

supply separate external fusing which must comply with

the National Electric Code and/or local codes.

Variable-Air-Volume – Eco²units are available for

single-zone variable-air-volume (VAV) applications.

Supply fans are controlled to the supply duct static

pressure setpoint, which can be reset via a BAS, or

through an analog voltage input on the unit controller

for optimized duct static pressure control. The static

pressure transducer is provided in the rooftop unit, and

5/16” or 1/4” plastic tubing and static pressure sensor

must be supplied by others and installed approximately

3/4 down the longest duct run.

Dual-point supply with terminal block – This option in-

cludes enclosure, terminal blocks circuited to the supply

and exhaust fans and control transformer and a second

set of terminal blocks with interconnecting wiring to the

compressors, heat (if applicable) and condenser.

Convenience Outlet – This options includes a powered

115V GFCI convenience outlet that can be used for

powering tools or lights for servicing. A protective cover

plate is included while not in use. The outlet is located

on the bottom left hand corner of the power panel.

Constant Volume – Eco²units are available for single-

zone constant volume applications. Control can be used

with a zone sensor, thermostat, or building automation

system.

CONTROL FEATURES AND OPTIONS

COOLING AND HEATING CONFIGURATIONS

Simplicity Elite Unit Controller – All Eco²units are

equipped with a factory-installed, programmed and

commissioned unit controller with all I/O capabilities and

control sequences. The controls include all on-board

diagnostic, safety and control features to operate the

rooftop unit. Two RS485 communication ports are in-

cluded as standard with one alarm output, a shutdown

contact, smoke ventilation contact, analog inputs for

supply air temperature and duct static pressure reset,

along with a variety of other capabilities.

Cooling Only – For applications where no heat is

required, or heating is provided elsewhere within the

building HVAC system, cooling only units include an

empty discharge plenum. Supply duct connections are

conﬁgurable for bottom, left or right discharge. The

supply air temperature sensor is included and factory-

installed.

Staged Gas Heat – For applications requiring gas heat

for morning warm-up, or other heating needs, a staged

natural gas furnace is available. The furnace is located

in the discharge plenum, downstream of the supply fan.

The supply air temperature sensor is located across the

face of the supply duct opening in the unit. Furnaces

are designed in 375 mbh modules with one stage each.

Three are available on the YPAL050-061 with bottom

discharge and two are available on the YPAL050-061

with left-side discharge. Ignition and safety controls are

included and factory-wired.

Standard Ambient – YPAL050-061 models operate

down to 40°F as standard.

LowAmbient – This option includes low ambient control

of the ﬁrst refrigerant circuit down to 0°F through the

use of suction and discharge pressure transducer on

circuit one, and condenser fan speed using a variable-

frequency drive on the ﬁrst condenser fan of circuit one.

Mechanical cooling with circuit two is locked out below

45°F (adjustable).

POWER OPTIONS

Flexsys bypass control option is not available with elite

controller.

Single-point supply with terminal block – This

conﬁguration is standard, and includes three terminals

for the incoming 3-phase power and is the standard

conﬁguration for the Eco²product. It includes the en-

closure, terminal-block, and interconnecting wiring to

the compressors, heater and furnace controls, all fans,

etc. In this conﬁguration, code requires that a means of

disconnect (not provided) must be installed at the site

within line-of-sight of the equipment.

SENSOR AND THERMOSTAT AND SENSOR

OPTIONS

Wall-Mount Zone Sensor – A thermistor zone sen-

sor for wall mounting. This zone sensor is for sensing

temperature only, and does not include any setpoint

adjustment features.

7-Wire Thermostat – This option is for a ship-loose

thermostat to interface with the Eco²unit. All models,

YPAL050-061, include an interface for a 7-wire ther-

mostat as standard.

Single-point supply with non-fused disconnect switch

– This option is the same the single-point with terminal

block option except it includes a unit-mounted through-

the-door manual non-fused disconnect switch with an

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

COMMUNICATIONS

RELIEF SYSTEM

BACnet MSTP (RS-485) Communications – This

communication is available via optional Modlinc Gate-

way. Communications to the unit are through a twisted

pair, and the wire terminations are on the primary unit

control board.

Barometric Relief – Optional building air exhaust shall

be accomplished through barometric relief dampers in-

stalled in the return air plenum. The dampers will open

relative to the building pressure. The opening pressure

shall be adjustable via a spring tension adjustment.

Modbus RTU Communications – This communication

is standard on every Eco²unit and can be used in lieu

of the BACnet communications (only one can be used

at a time).

Modulating Powered Exhaust with Damper Control–

This option consists of a constant-speed exhaust fan

with a discharge damper that is modulated to control the

ﬂow of exhaust air. The damper control logic is based on

the building static pressure setpoint within the rooftop

unit controller. The static pressure transducer is pro-

vided in the return plenum of the rooftop unit, and 5/16”

or 1/4” plastic tubing and static pressure sensor must

be supplied by others and installed in a representative

location in the building.

FILTER OPTIONS

Filter Options – Two-inch 30% throwaway, cleanable,

carbon or pleated ﬁlters in an angled rack are avail-

able. For higher ﬁltration requirements, optional rigid

ﬁlter racks are available with twelve-inch 65% or 95%

efﬁcient rigid ﬁlters. Two-inch pre-ﬁlters are included

with rigid ﬁlter options. The rigid ﬁlter rack option is

available without ﬁlter media where ﬁeld-supplied ﬁlters

are required.

Modulating Powered Exhaust with a VFD – This

option consists of a VFD to modulate the speed of the

exhaust fan to control the ﬂow of exhaust air. The VFD

control logic is based on the building static pressure

setpoint within the rooftop unit controller. The static

pressure transducer is provided in the return plenum

of the rooftop unit, and 5/16” or 1/4” plastic tubing and

static pressure sensor must be supplied by others and

installed in a representative location in the building.

OUTSIDE AIR DAMPER OPTIONS

Manual Damper – This option includes a manually

adjustable outside air damper. It is manually adjust-

able at the unit by setting a mechanical stop between

0-100 percent.

SUPPLY FAN OPTIONS

Two-Position – This outside air damper option is con-

trolled to a two positions, opened and closed. Determi-

nation of the damper position is based on the occupancy

schedule. In the occupied mode, the outside air damper

is positioned to the manually conﬁgured point (set by

mechanical stop). In the unoccupied mode, the damper

is fully closed.

DWDI Forward-Curved Supply Fan – The standard

supply air blower is a forward-curved supply fan. This fan

is good for medium static pressures and high airﬂows.

DWDI Airfoil Supply Fan – An optional airfoil blade

supply fan is available on all models for higher static

conditions. This option offers higher efﬁciency and lower

sound in certain applications.

Modulating Economizer – This option includes

modulating outdoor air and return air dampers that are

interlocked and positioned by fully modulating, solid

state damper actuators. Control of the damper is via a

standard ambient outdoor air dry bulb sensor, or optional

single or comparative enthalpy controls.

Fan Skid Isolation – The entire supply fan assembly is

isolated from the unit base with one (standard) or two-

inch deﬂection springs with optional seismic restraints.

Supply and Exhaust Fan Motors – High efﬁciency

ODP, and standard and high efﬁciency TEFC motors

are available all meeting the Energy Policy Act of 1992

(EPACT).

Rain Hoods on Outside Air Intakes – For all options

with outside air intake openings, rain hoods are provided

as standard to keep moisture from entering the equip-

ment. Rain hoods as an integral part of the unit and are

rotated into place.

Supply Fan VFD and Manual Bypass – For VAV

applications, VFDs are provided to modulate air ﬂow.

Optional manual bypass can also be provided to allow

full airﬂow in the event of a VFD failure.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Features and Beneﬁts (continued)

EVAPORATOR SECTION

Condenser Fan Motors – The condenser fan motors

used on the Eco²unit are Totally Enclosed Air Over

(TEAO) to provide maximum durability through any

season.

Double Wall Construction – Double-wall construction

is the standard construction of the Eco²and incorporates

powder coated pre-fabricated outer panels and corner

post for maximum exterior surface protection.

Hot Gas Bypass – This options permits continuous,

stable operation at capacities below the minimum step

of unloading by introducing an artiﬁcial load on the

evaporator. For models YPAL050-061, it is used on the

lead circuit and standard on VAV units.

Factory Shrink-wrap – Eco²rooftop units are shipped

from the factory with factory-fresh shrink-wrap packag-

ing. No longer does the contractor need to worry about

dirt and debris clogging up condenser coils or moisture

leaking into the air handler on the units way to the job

site or rigging yard.

Replaceable Core Liquid Line Driers – Liquid line

driers are standard on the Eco²rooftop unit. An option

is provided for replaceable core driers.

Copper Fins – For more extreme climates that aggres-

sively can attack aluminum, copper tube evaporator coils

with copper ﬁns are available. (This is not recommended

for units in areas where they may be exposed to acid

rain or environments where ammonia is present)

Copper Fins – For more extreme climates that aggres-

sively can attack aluminum, copper tube condenser coils

with copper ﬁns are available. (This is not recommended

for units in areas where they may be exposed to acid

rain or environments where ammonia is present)

CONDENSER FEATURES AND OPTIONS

Pre-Coated Fins –An epoxy-coated aluminum ﬁn stock

to guard from corrosive agents and insulate against

galvanic potential. Recommended for mild seashore or

industrial locations.

Scroll Compressors – Reliable, efﬁcient, trouble-free

operation is the true measure of a packaged rooftop’s

value. That’s why YORK Eco²Packaged Rooftop

Air Conditioners use established scroll compressor

technology to deliver dependable, economical per-

formance in a wide range of applications. With the

Eco²Packaged Rooftop, you get the latest generation

of compressor enhancements added to the scroll’s

inherent strengths. The simplicity of a hermetic scroll

compressor allows the use of fewer moving parts to

minimize breakdown.

Post-Coated Fins – Technicoat coil-coating process

used on condenser coils for seashore and other cor-

rosive applications (with the exception of strong alkalis,

oxidizers, wet bromide, chlorine and ﬂuorine in concen-

trations greater than 100ppm).

Compressor Sound Blankets – Optional compressor

acoustic sound blankets are available for sound sensi-

tive applications.

ROOF CURBS

Multiple Compressor Staging – Through the use of the

scroll compressor, the Eco²has the ability to stage its

cooling by enabling and disabling multiple single stage

compressors on multiple circuits. These compressors

are manifolded together in pairs on a single refrigera-

tion circuit.

Partial perimeter roof curbs – This option includes a

knock-down 14” high roof curb for use with wood nailer

(by others). Roof curb supports the air handling section

with a separate support under the condenser end.

Compressor Circuiting – the Eco²is designed so that

only 2 scroll compressors are in tandem within one refrig-

eration circuit. This means more reliable compressors,

and less equipment down time. With multiple circuits, if

a compressor should ever fail on one circuit, the other

circuit will remain operational to work to maintain occu-

pied loads. The Eco²system has 2 circuits in a unit.

CABINET FEATURES AND OPTIONS

Double-Wall Access Doors - Full-sized access doors

provide easy access into the unit for routine maintenance

and inspection. Solid wall liners encase insulation and

prevent damage and erosion into the airstream.

Industry-leading, 1,000-hour, salt-spray rating, per

ASTM B117, keeps unit in superior condition.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

ACCESSORIES

The ﬁlter gauge measures the air pressure drop for

through the rigid ﬁlter bank to indicate when replace-

ment is required.

Filter Switch – An optional dirty ﬁlter alarm can be pro-

vided that will provide an alarm when the ﬁlters require

cleaning.

Magnahelic Filter Pressure Gauge – On units

equipped with downstream ﬁltration, a magnahelic ﬁlter

gauge is included and visible on the exterior of the unit.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Application Data

GENERAL

Finally, service clearances should be maintained in

rooftop design to insure safe access to the unit. Unit

clearances are designed so that technicians have

enough space between units, building walls, and edges

of building to gain access safely. In cases where space

is limited, please call your local YORK representative

for additional information.

The Eco²air conditioning units are designed for outdoor

installation. When selecting a site for installation, be

guided by the following conditions:

• Unit must be installed on a level surface.

• For the outdoor location of the unit, select a place

having a minimum sun exposure and an adequate

supply of fresh air for the condenser.

• Also avoid locations beneath windows or between

structures.

• Optional condenser coil protection should be used

for seashore locations or other harsh environ-

ments.

LD08044

• The unit should be installed on a roof that is structur-

ally strong enough to support the weight of the unit

with a minimum of deﬂection. It is recommended that

the unit(s) be installed not more than 15 feet from

a main support beam to provide proper structural

support and to minimize the transmission of sound

and vibration. Ideally, the center of gravity should

be located over a structural support or building

column.

NOTE:

1. Under certain conditions these clearances may be encroached upon.

2. This is a visual reference for all Eco²units.

RIGGING

Proper rigging and handling of the equipment is manda-

tory during unloading and setting it into position to retain

warranty status.

• Location of unit(s) should also be away from build-

ing ﬂue stacks or exhaust ventilators to prevent

possible reintroduction of contaminated air through

the outside air intakes.

Spreader bars must be used by cranes to prevent dam-

age to the unit casing. All lifting lugs must be used when

lifting the rooftop unit. Fork lifts will damage the rooftop

unit and are not recommended. Care must be taken to

keep the unit in the upright position during rigging and

to prevent damage to the watertight seams in the unit

casing. Avoid unnecessary jarring or rough handling.

• Be sure the supporting structures will not obstruct

the duct, gas or wiring connections.

• Proper service clearance space of 6-feet around

the perimeter of the unit, 8-feet on one side for coil

servicing, and 12-feet to any adjacent units is re-

quired to eliminate cross contamination of exhaust

and outdoor air, and for maintenance tasks such

as coil pull and cleaning. No obstructions should

be above the condensing unit section.

UNIT PLACEMENT

• Elevated – Elevated roof curbs or dunnage steel

can be used to support the unit in order to raise it

to speciﬁc heights. When this type of placement

is required, be sure to keep unit access in mind.

Cat-walks or other forms of unit access may be

required to one or both sides of the unit, depend-

ing on your area of the country and the local codes

that are enforced. Please check with local ofﬁcials

to ensure the application conforms to local codes

and regulations.

LOCATION

Of the many factors that can effect the location of

equipment, some of the most important to consider are

Structural, Acoustical and Service clearances. Proper

attention should be made at the design stage to ensure

proper structural support. In cases where equipment is

being replaced, be aware of building design to insure

support is adequate for the application.

• Ground Level Locations – It is important that the

units be installed on a substantial base that will not

settle, causing strain on the refrigerant lines and

sheet metal and resulting in possible leaks. A one-

piece concrete slab with footers extended below

the frost line is highly recommended. Additionally,

the slab should be isolated from the main building

foundation to prevent noise and vibration trans-

mission to the building structure. For ground level

installations, precautions should be taken to protect

the unit from tampering by, or injury to, unauthorized

The next most important consideration in applying roof

top equipment is that of sound from the equipment.

Special care should be made to keep the roof top unit

away from sound sensitive areas such as conference

rooms, auditoriums and executive ofﬁces and any other

room that may have potential for tenant occupancy. Pos-

sible locations could be above hallways, mechanical or

utility rooms.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

persons. Erecting a fence around the unit is common

practice.

UNIT ORIENTATION

For applications with multiple rooftop units located in

close proximity on the roof, the orientation of the unit

may be important to reduce the potential for re-entrain-

ment of outside airﬂow. Regardless of the outside air and

exhaust air openings on a unit, all rooftop applications

can permit recirculation of exhaust air to the return, if

applied improperly.

• Roof curb – YORK offers optional roof curbs

designed speciﬁcally for the Eco²footprint. This

curb comes as an open condenser model and is

shipped disassembled and requires ﬁeld assem-

bly and installation. For bottom supply and return

openings, the curbs have matching connections to

ease installation. A pipe chase that matches the

rooftop unit pipe chase is also included in the curb

footprint for through-the-curb utility connections.

The curb should be located according to the loca-

tion recommendations above, and properly sealed

to prevent moisture and air leakage into and out of

the duct system. Flexible collars should be used

when connecting the duct work to prevent unit noise

transmission and vibration into the building.

HORIZONTAL APPLICATIONS

The spectrum of applications for roof top units in today’s

market is continuing to grow wider by the day. Flexibil-

ity in unit design and construction is a must in today’s

market in order to insure safe and sound applications of

HVAC equipment. The Eco²has been designed for spe-

ciﬁc application of horizontal supply and return airﬂow

taking the guess work out of unit application by building

a unit speciﬁc to these needs. If the application calls for

horizontal supply and return air, YORK can ship it from

the factory as a horizontal unit. This option elevates the

need for ﬁeld modiﬁcation of equipment, saving time

and money. The Eco²can support a left discharge on all

units except 1,125 MBH gas, and/or right discharge on

all cooling-only units. Return air can be brought through

the end or side return air inlet making the unit speciﬁc

to building needs.

Duct work should be supported independently of the unit.

TABLE 1 – SUPPLY-AIR DUCT-CONNECTION CONFIGURATIONS

Supply Air

Unit Conﬁguration

Bottom Left Right

Cooling only

ꢀ

Cool/gas heat 375-750 MBH

Cool/gas heat 1,125 MBH

N/A

50-65 Tons

N/A

TABLE 2 – RETURN-AIR DUCT-CONNECTION CONFIGURATIONS

ECONOMIZER

Return Air

Unit Conﬁguration

The economizer section is used for ventilation of the

conditioned space to maintain indoor air quality, and

also to reduce energy consumption by using outdoor

air cooling in lieu of mechanical cooling. If outdoor air is

appropriate for cooling, but not sufﬁcient for the cooling

demand, mechanical cooling will stage on as necessary

until the cooling load is met.

Bottom Left Rear

No exhaust

ꢀ

Barometric relief damper

Powered exhaust fan

N/A

50-65 Tons

DUCT CONSIDERATIONS

Dual (comparative or differential) enthalpy operation is

the most accurate and efﬁcient means of economizer

operation. The unit controller monitors the return and

outside air energy content, and selects the lower of the

two for operation.

Unlike competitive units where air can leave the rooftop

unit stratiﬁed across the width of the unit, the Eco²unit

sufﬁciently mixes airﬂow to ensure consistent air tem-

perature from the unit. No special Tee considerations are

required and the unit may be oriented either way.

NOTE:

This diagram is provided as a visual reference of the Eco²discharge & return air openings & locations for all sizes. Please refer to the dimensional

data for exact size & location of panels and openings.

LD08045

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Application Data (continued)

potential. It is used for mild seashore or industrial

locations. This can provide corrosion resistance

comparable to copper ﬁn coils in typical seashore

locations.

VAV SUPPLY AIR PRESSURE CONTROL

Traditional packaged rooftop systems use inlet guide

vanes (IGVs) for duct static pressure control. These

control supply duct pressure by modulating dampers

(introducing losses and inefﬁciencies) on the inlet of the

fan, open and closed. YORK’s variable frequency drives

(VFDs) offer superior fan speed control and quieter,

energy efﬁcient operation.

• Post-Coated Condenser Fins – Technicoat (a

post-coated application of epoxy) can be used for

seashore and other corrosive applications with the

exception of strong alkaloides, oxidizers, wet bro-

mide, chlorine and ﬂuorine in concentrations greater

than 100 ppm. Any of the above suitable options

should be selected based on the particular project

design parameters and related environmental fac-

tors. The application should be further reviewed and

approved by the consulting engineer or owner based

on their knowledge of the job site conditions.

For VAV applications, the YORK Eco²unit uses a VFD

to modulate fan speed and maintain a constant duct

static pressure. VFDs offer superior control over the

operation of the unit at part load, and offer the additional

beneﬁts of quieter and more efﬁcient operation when

compared to IGV.

BUILDING PRESSURE CONTROL SYSTEMS

Building pressure control systems are often neces-

sary when economizers are used to bring in outdoor

air. Without proper building exhaust, the building may

become over pressurized. The pressure control system

maintains the proper building pressure by expelling the

appropriate amount of air from the building.

Exhaust/relief fans – In this application, a powered

exhaust fan may be suitable, however careful consid-

eration of the fan type is necessary. YORK offers a

centrifugal powered exhaust fan to perform this function.

Some manufacturers use a propeller exhaust fan, which

cannot handle the static pressure requirements.

FIG. 1. TRADITIONAL OVERHEAD VAV AIR

DELIVERY SYSTEM

For systems with moderate to low return static pressure,

an exhaust fan is recommended. The beneﬁt of the ex-

haust fan is that it does not run all of the time, and may

facilitate compliance with the ASHRAE 90.1 fan motor

horsepower requirement.

HARSH ENVIRONMENTS – CONDENSER AND

EVAPORATOR COIL PROTECTION

The exhaust fan operates in parallel with the supply

fan. In this arrangement, the supply fan handles the full

static pressure requirements of the system. For normal

building pressure control, the exhaust fan operates to

draw air from the return plenum and exhaust it out of

the building.

For harsh environmental conditions such as seashore

applications, YORK offers three types of coil protection:

copper ﬁn material, black ﬁn and Technicoat coatings.

YORK recommends that for corrosive environments that

copper ﬁns be used to protect the evaporator and/or

condenser coils. In areas where chemicals that can

corrode copper are present, such as ammonia, YORK

recommends that the black ﬁn or Technicoat coating be

used for maximum protection.

The exhaust fan conﬁguration is available in two forms,

modulating and non-modulating. Modulating is the most

common and recommended for the majority of applica-

tions, while non-modulating should be used with in only

certain circumstances.

• Copper-Fin Evaporator and Condenser Coil

– Copper ﬁns can be used instead of aluminum for

additional corrosion protection. However, it is not

suitable for areas that are subject to acid rain or

exposed to ammonia.

In the modulating exhaust system, the volume of airﬂow

exhausted from the building is proportional to the enter-

ing volume of outside air. Control is accomplished via

either a discharge damper or a variable-frequencydrive

(VFD). YORK recommends the use of a VFD to reduce

energy consumption, sound levels and improved reli-

ability due to fewer moving parts.

• Pre-Coated Condenser Fins – Black ﬁn coating

(yellow ﬁn for evaporator ﬁns) is pre-coated appli-

cation epoxy on aluminum ﬁn stock to guard from

corrosive agents and insulate against galvanic

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

In the non-modulating exhaust system, the exhaust air-

ﬂow is constant whenever the exhaust fan is operating.

This type of control should only be used to either assist

a smoke purge system or when a system requires a

constant volume of exhaust airﬂow.

vanes. Additional sound attenuation can be obtained

using compressor sound blankets and ﬁeld-supplied

sound attenuators when necessary.

Even with these equipment design features, the acousti-

cal characteristics of the entire installation must never be

overlooked.Additional steps for the acoustical character-

istics of a rooftop installation should be addressed during

the design phase of a project to avoid costly alterations

after the installation of the equipment. During the design

phase of a project, the designing engineer should con-

sider, at a minimum, the impact of the equipment location,

rooftop installation, building structure, and duct work.

ACOUSTICAL CONSIDERATIONS

The Eco²unit is designed for lower sound levels than

competitive units by using ﬂexible fan connections, fan

spring isolators, double-wall construction, multiple fan

options, and lower speed and horsepower fans. For

VAV applications, VFDs are used instead of inlet guide

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

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JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Nomenclature

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Physical Data

TABLE 3 – PHYSICAL DATA

MODEL

050

051

060

061

General Data

Length without hood (inches)

339

Width (inches)

Height (inches)

Compressor Data

Quantity

Scroll

Type

Unit Capacity Steps

R410a Charge (SYS 1/2) (lb-oz)

50 / 50

58 - 11 / 58 - 11

Supply Fan

Quantity

Type

Size

28 - 28

Motor Size Range (HP)

10 - 40

Air Flow Range (CFM)

10,000 - 22,500

1.0" - 6.0"

10,000 -22,500

1.0" - 6.0"

12,500 - 24,000

1.0" - 6.0"

12,500 - 24,000

1.0" - 6.0"

Static Pressure Range (Total)

Optional Supply Fan

Quantity

Type

Size

Motor Size Range (HP)

Air Flow Range (CFM)

Static Pressure Range (Total)

Exhaust Fan

10 - 40

10,000 - 24,000

1.0" - 8.0"

10,000 - 24,000

1.0" - 8.0"

12,500 - 24,000

1.0" - 8.0"

12,500 - 24,000

1.0" - 8.0"

Quantity Fans/Motors

Type

2 / 1

Size

18 - 18

Motor Size Range (HP)

Air Flow Range (CFM)

Static Pressure Range (Total)

Evaporator Coil

5 - 20

4,000 - 22,500

0.1" - 1.5"

4,000 - 22,500

0.1" - 1.5"

4,000 - 24,000

0.1" - 1.5"

4,000 - 24,000

0.1" - 1.5"

Size (square feet)

Rows/FPI

3 / 17

4 / 17

Condenser Coil

Size (square feet)

Rows/FPI

2 / 17

3 / 17

Condenser Fans

Quantity

Prop.

Type

Diameter (inches)

Motor HP

Filters - 2" throwaway (pre-ﬁlter position - angled)

Quantity

8 / 12

25x16 / 25x20

61.6

8 / 12

25x16 / 25x20

61.6

8 / 12

25x16 / 25x20

61.6

8 / 12

25x16 / 25x20

61.6

Size (length x width) (in.)

Total Filter Face Area (square feet)

Filters - 2" cleanable (pre-ﬁlter position - angled)

Quantity

8 / 12

25x16 / 25x20

63.9

8 / 12

25x16 / 25x20

63.9

8 / 12

25x16 / 25x20

63.9

8 / 12

25x16 / 25x20

63.9

Size (length x width) (in.)

Total Filter Face Area (square feet)

Filters - 2" pleated, 30% efﬁcient (pre-ﬁlter position - angled)

Quantity

8 / 12

25x16 / 25x20

63.9

8 / 12

25x16 / 25x20

63.9

8 / 12

25x16 / 25x20

63.9

8 / 12

25x16 / 25x20

63.9

Size (length x width) (in.)

Total Filter Face Area (square feet)

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

TABLE 3 – PHYSICAL DATA (cont’d)

MODEL

Filters - 12" rigid 65%, 2" 30% prefilter (pre-ﬁlter position)

Quantity

050

051

060

061

1 / 4 / 9

Size (length x width) (in.)

16x20/25x16/25x20 16x20/25x16/25x20 16x20/25x16/25x20 16x20/25x16/25x20

Total Filter Face Area (square feet)

Filters - 12" rigid 95%, 2" 30% prefilter (pre-ﬁlter position)

Quantity

43.0

1 / 4 / 9

Size (length x width) (in.)

16x20/25x16/25x20 16x20/25x16/25x20 16x20/25x16/25x20 16x20/25x16/25x20

Total Filter Face Area (square feet)

Filters - 2" carbon (pre-ﬁlter position - angled)

Quantity

44.6

8 / 12

25x16/25x20

63.9

8 / 12

25x16/25x20

63.9

8 / 12

25x16/25x20

63.9

8 / 12

25x16/25x20

63.9

16x20/25x16/25x20

Total Filter Face Area (square feet)

Filters - 12" rigid rack only, with 2" throwaways

Quantity

1 / 4 / 9

Size (length x width) (in.)

16x20/25x16/25x20 16x20/25x16/25x20 16x20/25x16/25x20 16x20/25x16/25x20

Total Filter Face Area (square feet)

MODEL

050

051

060

061

Gas Furnaces

375 MBH / 300 MBH / 1 steps

750 MBH / 600 MBH / 2 steps

1125 MBH / 900 MBH / 3 steps

Staged Furnace Sizes (input/output/steps)

Gas Pressure Range

4.5" - 13.5"

IWC

4.5" - 13.5"

IWC

4.5" - 13.5"

IWC

4.5" - 13.5"

IWC

Minimum OA Temp for Mech. Cig.

Low Ambient Option Min. OA Temp

40°F

375

750

1,125

7,500

14,000

21,000

7,500

14,000

21,000

11,500

14,000

21,000

11,500

14,000

21,000

Minimum Airﬂow (Heating)

Bottom Supply Only

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Physical Data

TABLE 4 – EFFICIENCY RATINGS

VAV

IEER

Model

IPLV

10.9

10.6

10.4

10.3

YPAL050

YPAL051

YPAL060

YPAL061

11.3

11.2

11.0

10.8

13.5

13.1

13.4

13.2

TABLE 5 – PHYSICAL DATA – UNIT EER

EER

Supply Blower

Type

Model

Cooling Only

Gas Heat

Forward-Curved

Air Foil

10.3

10.2

10.1

10.0

10.1

9.9

YPAL050

YPAL051

YPAL060

YPAL061

Forward-Curved

Air Foil

10.0

9.8

Forward-Curved

Air Foil

9.9

Forward-Curved

Air Foil

9.8

9.9

TABLE 6 – PHYSICAL DATA - COMPRESSORS

Compressors Utilized

Compressor Nominal Tons

System 1 System 2

% Capacity Per Stage

System 1

System 2

“Compr “Compr “Compr “Compr “Compr “Compr “Compr “Compr “Stage “Stage “Stage “Stage

# 1”

# 2”

# 3”

# 4”

# 1”

# 2”

# 3”

# 4”

1”

2”

52.0

50.0

57.4

55.8

3”

76.0

75.0

78.7

76.7

4”

050

051

060

061

ZP137 ZP120 ZP137 ZP120 13.58 12.53 13.58 12.53 26.0

ZP137 ZP137 ZP137 ZP137 13.58 13.58 13.58 13.58 25.0

ZP182 ZP137 ZP182 ZP137 17.95 13.30 17.95 13.30 28.7

ZP182 ZP137 ZP182 ZP154 17.95 13.30 17.60 14.86 28.2

100.0

Model

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Altitude and Temperature Corrections

The information below should be used to assist in

application of product when being applied at altitudes

at or exceeding 1000 feet above sea level.

A centrifugal fan is a “constant-volume” device. This

means that if the RPM remains constant, the CFM de-

livered is the same regardless of the density of the air.

However, since the air at high altitude is less dense,

less static pressure will be generated and less power

will be required than a similar application at sea level.

Air-density-correction factors are shown in Table 7 and

Figure 2.

The airﬂow rates listed in the standard blower perfor-

mance tables are based on standard air at sea level.

As the altitude or temperature increases, the density

of air decreases. In order to use the indoor blower

tables for high-altitude applications, certain corrections

are necessary.

TABLE 7 – ALTITUDE-CORRECTION FACTORS

Altitude (feet)

5000

Air

Temp

1000

1.022

1.002

0.982

0.964

0.947

0.929

0.912

2000

0.986

0.966

0.948

0.930

0.913

0.897

0.88

3000

0.95

4000

0.916

0.898

0.880

0.864

0.848

0.833

0.817

6000

0.849

0.832

0.816

0.801

0.787

0.772

0.758

7000

0.818

0.802

0.787

0.772

0.758

0.744

0.730

8000

0.788

0.772

0.757

0.743

0.73

9000

0.758

0.743

0.729

0.715

0.702

0.689

0.676

10000

0.729

0.715

0.701

0.688

0.676

0.663

0.651

1.060

1.039

1.019

1.000

0.982

0.964

0.946

0.882

0.864

0.848

0.832

0.817

0.802

0.787

0.931

0.913

0.896

0.880

0.864

0.848

0.716

0.703

100

The examples below will assist in determining the airﬂow

performance of the product at altitude.

Example 2: Asystem, located at 5,000 feet of elevation,

is to deliver 6,000 CFM at a static pressure of 1.5”. Use

the unit blower tables to select the blower speed and

the BHP requirement.

Example 1: What are the corrected CFM, static

pressure, and BHP at an elevation of 5,000 ft. if the

blower performance data is 6,000 CFM, 1.5 IWC and

4.0 BHP?

Solution: As in the example above, no temperature

information is given so 70°F is assumed.

The 1.5" static pressure given is at an elevation of

5,000 ft. The ﬁrst step is to convert this static pressure

to equivalent sea-level conditions.

Solution: At an elevation of 5,000 ft, the indoor blower

will still deliver 6,000 CFM if the RPM is unchanged.

However, Table 7 must be used to determine the static

pressure and BHP.

Sea-level static pressure = 1.5 / 0.832 = 1.80"

Since no temperature data is given, we will assume an

air temperature of 70°F. Table 7 shows the correction

factor to be 0.832.

Enter the blower table at 6000 sCFM and static pressure

of 1.8”. The RPM listed will be the same RPM needed

at 5,000 ft.

Suppose that the corresponding BHP listed in the blower

table is 3.2.

Corrected static pressure = 1.5 x 0.832 = 1.248 IWC

Corrected BHP = 4.0 x 0.832 = 3.328

This value must be corrected for elevation.

BHP at 5,000 ft = 3.2 x .832 = 2.66

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

FIG. 2. ALTITUDE/TEMPERATURE CONVERSION FACTOR

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Cooling Performance Data — 050 Model

TABLE 8 – COOLING PERFORMANCE DATA* - 50 TON (STANDARD CAPACITY)

Temperature of Air on Condenser Coil

Air on

Evaporator Coil

85°F

95°F

Total²

Input

(kW)

Total

Cap.¹

(MBH)

Total²

Input

(kW)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Total

Cap.¹

(MBH)

CFM

(°F)

684

618

574

571

702

636

604

603

716

652

632

631

728

666

655

654

737

679

675

674

744

692

691

751

708

707

402 364 324 287 247

653

590

550

670

608

581

683

623

607

606

694

636

629

702

649

648

647

709

665

664

715

680

679

678

390 352 312 275 235

485 446 407 368 329 289 249

562 520 476 437 397 358 318

571 555 539 523 484 442 400

471 433 394 355 317 277 237

549 508 465 423 384 345 305

550 534 518 502 471 428 386

12000

428 385 341 296 252

415 372 329 284 240

523 479 434 390 345 299 254

604 568 518 469 424 378 333

603 586 568 551 526 476 427

514 466 421 377 332 287 241

581 555 506 456 410 365 320

581 563 546 529 511 463 413

14000

452 404 355 305 255

439 391 343 292 243

565 510 460 410 360 309 258

632 612 559 500 448 397 346

631 612 593 575 556 511 453

555 497 447 397 347 296 245

607 589 545 489 435 384 333

606 588 569 551 533 498 441

16000

475 421 368 312 258

462 409 355 300 246

605 539 484 429 374 317 261

655 635 596 533 472 415 359

654 634 614 595 575 544 481

594 531 471 415 360 304 248

629 610 583 521 458 402 345

629 609 589 570 551 529 466

18000

496 438 380 320 260

483 425 367 307 248

646 574 507 446 386 325 264

675 654 632 564 494 432 370

674 653 632 612 592 572 506

633 560 493 433 373 311 251

648 628 607 552 480 418 357

648 627 607 586 567 547 492

20000

516 453 391 326 262

503 440 378 313 250

682 604 528 463 398 334 266

692 670 649 594 515 448 381

691 670 648 627 606 585 531

665 592 514 449 385 320 253

665 643 622 581 506 434 367

664 643 621 601 580 560 518

22000

535 468 401 332 264

521 454 388 319 252

708 637 548 478 409 340 269

708 685 663 624 540 463 391

707 684 662 640 618 597 555

680 626 534 465 396 327 256

679 657 635 610 526 449 377

678 656 635 613 592 571 541

24000

105°F

115°F

619

558

526

634

575

555

646

589

580

579

655

603

600

663

618

617

669

634

633

674

647

646

376 338 299 261 222

580

524

499

594

540

526

604

553

549

548

613

568

567

619

585

584

625

599

598

629

611

610

360 323 285 246 207

12000

457 418 380 341 303 263 223

526 493 450 409 369 330 291

526 510 494 478 456 413 371

444 403 364 326 287 248 209

499 478 436 393 254 314 275

499 483 468 453 438 398 355

401 358 315 270 226

386 343 300 255 211

499 451 407 362 318 273 228

555 538 492 443 395 350 305

555 538 521 504 487 449 398

486 435 391 347 302 257 212

527 510 477 427 379 334 289

526 509 493 476 460 433 384

14000

425 377 329 278 229

409 361 313 263 214

540 486 432 382 332 281 231

580 561 532 474 420 369 318

579 561 543 525 507 483 426

527 470 416 366 316 266 215

549 531 514 460 403 353 302

548 531 513 496 478 461 411

16000

447 394 341 286 232

431 378 325 270 216

580 516 455 400 346 289 234

600 581 562 507 443 403 330

600 580 561 543 524 519 452

565 503 439 384 329 273 219

568 549 531 492 429 370 314

567 549 530 512 494 476 436

18000

468 410 353 293 234

452 394 337 277 219

618 548 478 418 358 298 237

618 598 578 538 468 403 341

617 597 577 558 538 519 478

585 534 461 401 342 282 221

584 565 545 522 451 386 325

584 564 545 526 507 488 461

20000

488 425 363 299 236

471 409 347 283 221

634 679 499 434 370 305 239

633 612 592 567 490 418 352

633 612 591 571 551 531 502

599 568 488 417 353 289 223

598 578 558 538 476 401 335

598 577 557 538 518 499 480

22000

506 439 373 308 238

489 423 357 292 223

647 614 526 449 380 312 241

647 625 604 583 514 433 362

646 625 603 582 561 540 521

611 590 514 433 364 295 225

610 590 569 549 498 416 345

610 589 568 548 528 508 489

24000

* Rated performance is at sea level. Cooling capaciites are gross cooling capacity.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Cooling Performance Data — 051 Model

TABLE 9 – COOLING PERFORMANCE DATA* - 55 TON (HIGH CAPACITY )

Temperature of Air on Condenser Coil

Air on

Evaporator Coil

85°F

95°F

Total²

Input

(kW)

Total

Cap.¹

(MBH)

Total²

Input

(kW)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Total

Cap.¹

(MBH)

CFM

(°F)

704

636

590

584

723

655

619

618

738

672

647

646

750

686

671

670

760

699

692

691

768

711

710

709

775

726

725

413 374 334 295 255

496 457 417 378 338 298 257

572 531 487 447 407 367 327

672

607

564

562

690

624

595

594

704

640

622

621

715

656

645

644

724

667

664

731

681

682

681

737

697

696

400 361 321 283 242

483 443 404 365 325 285 244

559 516 475 434 394 354 313

562 546 530 514 480 438 395

12000

584 568 551 535

441 396 351 305 259

427 383 338 293 247

537 492 446 401 355 309 262

619 579 530 481 435 389 342

618 600 582 565 537 487 439

523 478 433 387 342 296 249

595 565 515 467 421 375 329

594 577 559 542 522 474 424

14000

467 417 366 315 263

454 404 353 302 250

580 525 474 423 371 319 266

647 625 571 514 462 409 357

646 627 608 589 571 522 466

566 511 460 409 358 305 252

622 603 557 502 448 395 343

621 602 584 565 547 508 451

16000

492 436 381 323 266

479 423 367 310 253

621 557 501 443 386 328 269

671 651 611 548 487 429 370

670 650 630 610 590 556 494

606 543 487 429 372 314 256

645 625 596 533 473 415 356

644 624 604 585 566 541 479

18000

516 455 394 331 269

503 442 381 318 256

660 593 526 463 400 336 272

692 671 646 581 511 447 383

691 670 649 628 608 586 519

647 578 512 449 386 322 259

664 644 623 565 497 433 369

664 643 622 602 582 562 506

20000

539 473 407 339 272

526 460 393 326 259

698 622 550 482 414 344 275

710 688 666 610 534 465 395

709 687 665 644 622 601 546

681 611 536 468 400 332 262

682 660 638 597 519 451 381

681 659 637 616 596 575 531

22000

561 490 419 346 274

547 477 405 333 261

726 655 573 500 427 353 278

726 703 680 640 556 482 407

725 702 680 657 635 613 570

697 642 558 486 413 339 265

697 674 652 625 546 468 393

696 673 651 629 608 586 554

24000

105°F

115°F

636

574

539

538

653

592

569

568

665

606

594

593

675

619

615

614

683

633

690

650

649

695

664

663

385 347 307 268 228

597

539

511

510

611

555

539

538

622

569

562

561

631

583

582

581

638

599

598

644

614

613

649

627

626

625

370 331 293 253 213

12000

467 429 389 350 311 270 230

539 502 460 418 379 339 299

538 522 506 490 464 422 380

454 412 373 334 295 255 214

511 486 445 402 362 323 283

510 495 479 464 448 406 364

413 368 324 278 232

397 352 308 263 217

511 463 418 373 327 281 235

569 549 501 452 406 360 314

568 550 533 516 499 458 408

496 446 401 356 311 265 218

539 522 485 437 389 343 297

538 521 505 488 472 442 393

14000

439 389 339 287 236

422 373 323 271 220

553 495 445 394 343 290 238

594 575 542 486 432 380 328

593 574 556 538 520 493 437

537 482 428 377 326 274 222

562 544 524 471 415 363 311

561 543 526 508 491 473 421

16000

464 408 353 296 239

447 392 336 280 223

592 531 471 414 357 299 241

615 596 576 519 457 399 341

614 595 576 556 538 519 464

576 516 454 397 341 283 225

582 563 544 503 439 382 324

581 562 543 525 507 489 448

18000

487 427 366 303 242

471 410 349 287 226

630 565 496 434 371 307 244

633 613 593 550 480 417 353

633 612 592 572 553 533 490

599 549 478 417 354 292 228

599 579 559 533 466 400 336

598 578 559 539 520 501 472

20000

510 444 378 311 244

493 428 362 295 228

650 597 519 452 384 316 247

649 628 607 579 507 435 365

649 627 607 586 565 545 514

614 581 506 435 367 300 231

613 593 572 552 491 417 348

613 592 572 552 532 513 493

22000

532 461 390 318 246

515 444 374 303 231

664 626 547 470 397 324 249

663 641 620 598 528 452 377

663 641 619 598 577 556 534

627 605 533 453 380 307 233

626 605 584 563 515 434 359

625 604 583 563 542 522 502

24000

* Rated performance is at sea level. Cooling capaciites are gross cooling capacity.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Cooling Performance Data — 060 Model

TABLE 10 – COOLING PERFORMANCE DATA* - 60 TON (STANDARD CAPACITY )

Temperature of Air on Condenser Coil

Air on

Evaporator Coil

85°F

95°F

Total²

Input

(kW)

Total

Cap.¹

(MBH)

Total²

Input

(kW)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Total

Cap.¹

(MBH)

CFM

(°F)

802

722

664

644

830

749

692

685

852

769

722

721

869

788

752

751

883

804

779

778

894

816

803

802

904

831

824

823

456 416 375 336 295

539 499 459 419 379 338 296

612 571 529 488 448 407 366

768

691

636

621

793

715

663

660

813

736

695

694

828

751

724

723

841

766

749

748

852

780

772

771

860

793

791

790

441 402 361 322 281

524 484 444 404 364 323 282

598 556 514 473 433 392 352

12000

644 626

621 604 586

486 441 394 348 301

471 426 380 333 286

583 537 491 445 398 351 303

671 622 572 525 478 431 384

685 666 646 627 578 530 480

568 522 476 429 383 336 288

656 606 559 510 463 416 369

660 641 622 603 563 514 465

14000

515 464 412 359 306

500 449 397 344 291

625 573 521 469 416 362 308

722 672 616 560 507 454 401

721 700 679 658 623 566 510

613 558 505 453 401 347 293

695 656 602 544 491 438 385

694 673 653 633 607 551 494

16000

543 486 428 369 310

528 470 413 354 295

670 608 550 491 433 373 313

752 720 658 594 535 475 416

751 729 707 685 663 602 539

654 592 534 476 417 357 297

724 702 643 581 519 460 400

723 701 679 658 637 587 522

18000

570 507 444 379 313

554 491 428 363 298

714 642 578 514 449 383 316

779 755 699 630 562 496 430

778 754 731 708 685 638 569

697 628 562 497 433 367 301

749 726 683 613 545 480 414

748 725 702 680 657 622 552

20000

596 527 458 388 317

580 511 443 372 301

753 680 605 535 464 392 320

803 778 739 663 588 516 444

802 777 753 728 705 672 595

738 663 589 518 448 376 304

771 747 721 648 571 500 428

770 746 722 699 676 652 580

22000

621 547 472 396 320

605 531 456 380 304

796 712 631 555 479 402 323

824 798 772 696 612 535 457

823 797 771 746 722 697 623

778 698 614 539 462 386 308

791 766 741 680 595 519 441

790 765 740 716 692 668 608

24000

105°F

115°F

730

657

604

596

753

678

634

633

770

697

665

664

784

713

693

692

796

727

716

715

805

741

737

736

813

756

755

754

425 386 345 306 265

688

619

571

568

709

640

604

603

724

657

633

632

737

671

658

657

747

684

680

679

755

700

699

698

762

717

716

715

408 369 329 289 249

12000

508 468 428 388 348 308 266

581 539 497 457 417 376 336

596 579 562 543 501 458 417

490 450 411 371 331 291 250

564 522 481 439 399 359 319

568 552 535 519 484 442 400

455 410 364 318 271

437 392 347 300 254

550 505 459 413 367 320 272

634 590 541 493 446 400 353

633 614 596 577 546 497 448

535 487 441 395 349 302 255

604 572 524 475 428 382 335

603 585 567 549 528 479 430

14000

483 432 381 328 275

465 414 363 311 258

595 540 488 436 384 330 277

666 639 584 527 474 421 368

664 644 624 605 585 533 477

579 522 470 418 366 313 259

633 614 566 511 456 403 350

632 613 593 574 555 516 460

16000

511 453 396 338 278

492 435 378 320 261

639 574 517 458 400 341 281

693 671 626 563 501 442 383

692 670 649 628 608 570 507

621 559 498 440 382 323 263

658 638 607 546 483 424 365

657 637 616 596 576 551 488

18000

537 474 411 347 282

519 456 393 329 264

681 612 544 480 416 350 284

716 694 665 597 527 462 397

715 693 671 649 627 603 535

662 592 525 461 397 332 267

680 658 637 580 508 444 378

679 657 636 615 594 573 516

20000

563 494 425 355 285

544 476 407 337 268

722 648 571 501 431 360 288

737 713 690 631 552 482 410

736 713 689 666 644 621 562

700 628 551 482 412 342 270

699 677 654 612 537 463 391

699 676 653 631 609 587 544

22000

588 513 439 363 287

569 495 421 345 270

756 679 596 521 445 369 291

755 731 707 663 581 501 423

755 730 706 682 659 635 590

717 662 582 502 426 350 272

716 693 669 642 562 482 404

715 692 668 646 623 600 569

24000

* Rated performance is at sea level. Cooling capaciites are gross cooling capacity.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Cooling Performance Data — 061 Model

TABLE 11 – COOLING PERFORMANCE DATA* - 65 TON (HIGH CAPACITY )

Temperature of Air on Condenser Coil

Air on

Evaporator Coil

85°F

95°F

Total²

Input

(kW)

Total

Cap.¹

(MBH)

Total²

Input

(kW)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Sensible Capacity (MBH)

Return Dry Bulb (°F)

Total

Cap.¹

(MBH)

CFM

(°F)

815

733

673

651

844

760

702

693

866

782

731

730

884

801

762

761

898

817

790

789

910

831

814

813

920

844

836

835

461 421 381 341 300

544 504 464 424 384 343 301

618 576 534 493 453 412 371

780

702

645

629

806

727

673

669

827

747

704

703

843

764

734

733

856

779

760

759

867

793

782

781

876

806

803

802

446 407 366 327

529 489 449 409

602 561 519 478

286

369

438

328 287

397 357

341 293

421 374

519 470

12000

651

629 611

492 446 399 354 306

589 543 496 450 404 356 308

676 627 577 531 484 437 389

477 431 385 339

573 527 481 435

661 612 563 515

669 649 630 611

505 454 403 350

617 563 511 458

704 661 606 550

703 682 662 641

533 476 419 360

659 598 540 481

734 708 648 585

733 710 689 667

560 497 434 369

703 633 567 503

760 736 688 619

759 735 712 689

586 517 448 378

744 669 594 524

782 758 727 653

781 757 733 709

611 537 462 386

784 703 620 545

803 777 752 685

802 776 751 726

291

388

468

568

296

406

497

612

300

423

524

646

304

438

551

667

307

454

576

685

310

468

601

702

14000

694 674 654

521 470 418 365 311

631 579 527 474 422 368 314

730 678 622 566 513 459 406

730 708 687 667 628 571 516

352 298

444 390

556 500

16000

549 492 434 375 316

676 614 556 497 438 379 318

762 726 664 600 541 481 421

761 738 716 694 670 608 544

363 303

465 405

592 528

18000

576 513 450 385 319

718 648 584 519 455 389 322

790 766 705 636 567 502 436

789 765 741 718 694 644 573

373 306

485 420

628 557

20000

602 533 464 394 323

760 683 611 541 470 398 326

814 789 745 669 594 522 450

813 788 763 739 714 678 601

382 310

505 433

659 585

22000

628 553 479 402 326

801 718 638 561 485 407 329

836 809 780 702 618 541 463

835 808 783 757 732 706 629

391 313

524 446

678 613

24000

105°F

115°F

742

667

614

604

766

690

643

641

784

710

675

674

799

726

703

702

810

739

727

726

820

753

748

747

828

768

767

766

430 391 350 311 270

513 473 433 393 353 312 271

586 544 502 462 422 381 341

701

630

581

577

722

651

613

612

738

669

643

642

751

683

668

762

697

691

690

770

711

710

778

729

728

727

413 374 334 294 254

12000

495 456 416 376 336 296 255

569 527 486 445 404 364 324

577 560 543 527 489 447 405

604 587 569

460 415 369 323 276

442 397 352 306 259

556 510 464 418 372 325 277

641 595 547 498 451 405 358

642 623 604 585 551 502 453

539 492 446 401 354 307 260

613 577 529 480 434 387 340

612 594 575 557 534 484 435

14000

489 437 386 333 280

471 420 368 316 263

601 546 494 442 389 336 282

675 644 589 532 480 427 373

674 653 633 613 593 539 482

583 527 476 424 371 318 264

643 622 571 517 462 409 356

642 622 603 583 564 521 465

16000

516 459 402 343 284

498 441 384 325 266

644 580 522 464 405 346 286

703 681 631 568 507 448 388

702 680 659 638 617 575 512

626 563 504 446 387 328 268

669 648 613 550 488 429 370

668 647 626 606 585 556 493

18000

543 480 417 352 287

524 461 399 334 269

685 618 550 485 421 355 289

727 704 671 602 533 468 402

726 703 681 658 636 609 540

667 598 531 467 403 337 272

691 669 646 585 514 449 384

690 668 646 625 604 583 522

20000

568 500 431 361 290

550 481 412 343 273

727 652 576 506 436 365 293

748 724 700 636 558 487 416

747 723 700 677 654 631 567

706 634 557 488 417 346 275

711 688 665 617 542 469 397

710 687 664 641 619 598 549

22000

593 519 445 369 293

574 500 426 351 276

764 685 602 527 451 374 296

767 742 718 668 587 506 429

766 741 717 693 669 645 595

729 668 585 507 432 356 278

728 704 680 648 567 487 410

727 703 680 656 633 611 575

24000

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Supply Fan Data

TABLE 12 – 28" x 28" FORWARD-CURVED FAN

Total Static Pressure (inches of water column)

2.0 3.0 4.0

CFM

1.0

5.0

6.0

STD. AIR

BHP

RPM

BHP

RPM

BHP

12.3

14.3

16.2

RPM

639

642

643

648

657

700

686

BHP

16.8

19.2

21.8

24.4

26.8

29.4

RPM

730

738

742

745

752

762

BHP

21.5

24.3

27.3

30.6

33.9

36.9

RPM

808

818

826

829

830

832

BHP

26.4

29.7

33.2

36.8

40.8

RPM

879

890

900

906

908

12000

14000

16000

18000

20000

22000

24000

26000

10.8

12.7

528

537

550

566

586

607

10.4

12.9

15.7

19.1

447

471

496

522

20.3

23.3

26.8

30.5

17.6

20.8

24.5

37.3

TABLE 13 – 28" AIRFOIL FAN

Total Static Pressure (inches of water column)

2.0 3.0 4.0

CFM

1.0

5.0

6.0

STD. AIR

BHP

RPM

BHP

RPM

BHP

RPM

BHP

12.6

14.8

17.3

20.1

23.3

26.9

31.2

36.1

RPM

1133

1177

1228

1285

1345

1409

1474

1542

BHP

15.9

18.4

21.2

24.3

27.9

31.8

36.2

RPM

1241

1278

1324

1376

1433

1493

1556

BHP

19.5

22.1

25.2

28.7

32.6

36.8

RPM

1343

1374

1415

1462

1515

1572

12000

14000

16000

18000

20000

22000

24000

26000

5.2

6.8

806

877

8.1

947

11.4

13.5

1068

1125

1186

1251

1318

1387

1457

1011

1077

1146

1218

1291

1366

8.7

951

12.3

10.9

13.6

16.6

20.2

1027

1105

1184

1265

18.1

21.7

25.7

22.4

26.5

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Component Static Pressure Drops

TABLE 14 – COMPONENT STATIC PRESSURE DROPS 050-061 MODELS

CFM

Component

10,000

12,000

14,000

16,000

18,000

20,000

22,000

24,000

Evap Coil 50 Ton

Dry

0.19

0.24

0.21

0.27

0.24

0.31

0.27

0.35

0.31

0.39

0.36

0.44

0.40

0.50

0.46

0.57

Wet

Evap Coil 60 Ton

Dry

0.25

0.32

0.28

0.36

0.32

0.41

0.37

0.46

0.42

0.52

0.47

0.59

0.54

0.67

0.61

0.76

Wet

Return Air

Bottom

Side

0.05

0.09

0.04

0.07

0.13

0.06

0.09

0.18

0.08

0.12

0.23

0.10

0.15

0.30

0.12

0.18

0.37

0.15

0.22

0.44

0.19

0.27

0.53

0.22

Rear

Filters

2" Throwaway

2" Cleanable

2" Pleated

0.07

0.01

0.06

0.08

0.03

0.16

0.31

0.08

0.01

0.07

0.11

0.03

0.19

0.37

0.09

0.02

0.08

0.14

0.03

0.22

0.44

0.11

0.03

0.10

0.17

0.03

0.25

0.53

0.12

0.03

0.12

0.20

0.03

0.29

0.64

0.13

0.04

0.14

0.23

0.03

0.34

0.77

0.15

0.05

0.16

0.26

0.03

0.40

0.92

0.16

0.07

0.19

0.29

0.03

0.46

1.10

2" Carbon

Rigid Filter Rack

Rigid 12", 65%

Rigid 12", 95%

Outside Air

0.10

0.01

0.14

0.01

0.19

0.02

0.25

0.02

0.31

0.03

0.38

0.04

0.46

0.05

0.55

0.06

Power Exhaust

Gas Heat

375 MBH

750 MBH

1125 MBH

0.03

0.05

0.07

0.06

0.10

0.08

0.13

0.11

0.16

0.17

0.13

0.20

0.21

0.16

0.24

0.25

0.19

0.29

0.30

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Exhaust Fan Data

EXHAUST FAN MOTOR SIZING INSTRUCTIONS

In order to determine the proper exhaust fan motor size, add the return duct static pressure to the appropriate damper

pressure drop value in Table 14 to get the total static pressure applied to the exhaust fan. Based on the exhaust fan

airﬂow and total static pressure, determine the brake horsepower and RPM of the exhaust fan.

TABLE 15 – FORWARD-CURVED FAN

Total Static Pressure (inches of water column)

CFM STD.

0.3

0.5

0.8

AIR

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

6000

8000

10000

12000

14000

16000

18000

20000

22000

24000

26000

5.4

7.2

645

680

721

765

811

858

528

579

632

685

739

794

5.7

7.7

584

632

681

731

782

6.4

8.5

633

678

725

772

821

6.8

9.3

9.1

10.1

11.1

14.1

17.6

11.8

15.1

18.9

15.1

18.8

16.4

NOTE: For performance at operating points not included in these tables, consult your local YORK representative.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Electrical Data

ELECTRICAL SERVICE SIZING

• LOAD3 is the current of the electric heaters – zero

for cooling-only units.

In order to use the electrical service required for the cool-

ing-only Eco²rooftop, use the appropriate calculations

listed below from U.L. 1995. Based on the conﬁguration

of the rooftop, the calculations will yield different MCA

(minimum circuit ampacity), and MOP (maximum over-

current protection).

• LOAD4 is the sum of any remaining currents greater

than or equal to 1.0 amp.

Use the following calculations to determine MCA and

MOP for units supplied with a single-point power con-

nection:

MCA = (1.25 x LOAD1) + LOAD2 + LOAD3 + LOAD4

MOP = (2.25 x LOAD1) + LOAD2 + LOAD3 + LOAD4

Using the following load deﬁnitions and calculations,

determine the correct electrical sizing for your unit. All

concurrent load conditions must be considered in the

calculations, and you must use the highest value for any

combination of loads.

If the MOP does not equal a standard current rating

of an overcurrent protective device, then the marked

maximum rating is to be the next lower standard rating.

However, if the device selected for MOP is less than the

MCA, then select the lowest standard maximum fuse

size greater than or equal to the MCA.

Load Deﬁnitions:

• LOAD1 is the current of the largest motor – com-

pressor or fan motor.

• LOAD2 is the sum of the remaining motor currents

that may run concurrently with LOAD1.

TABLE 16 – COMPRESSOR ELECTRICAL DATA

Nominal Voltage

Model

Compressor

Model

208-230/3/60

RLA*

460/3/60

575/3/60

LRA

239

245

239

245

340

245

340

300

340

245

340

RLA*

17.9

18.6

17.9

18.6

26.9

18.6

26.9

22.4

25.0

18.6

25.0

LRA

125

172

125

172

150

172

125

172

RLA*

12.8

14.7

12.8

14.7

23.7

14.7

23.7

19.8

23.7

14.7

23.7

LRA

ZP120

ZP137

ZP121

ZP137

ZP182

ZP137

ZP182

ZP154

ZP182

ZP137

ZP182

33.3

48.0

33.3

48.0

55.7

48.0

55.7

51.3

55.7

48.0

55.7

100

050

100

132

100

132

109

132

100

132

051

060

061

TABLE 17 – POWER SUPPLY VOLTAGE LIMITS

Power Supply

Minimum Voltage

Maximum Voltage

208V/3Ph/60Hz

187

207

414

518

228

253

506

632

230V/3Ph/60Hz

460V/3Ph/60Hz

575V/3Ph/60Hz

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

TABLE 18 – SUPPLY AND EXHAUST FAN MOTOR DATA - ODP

High Efﬁciency

Premium Efﬁciency

Nominal Voltage

Motor

Nominal Voltage

Motor

208/3/60 230/3/60 460/3/60 575/3/60

FLA

14.0

21.7

28.2

41.0

53.0

66.0

84.0

106.0

FLA

13.8

20.0

26.0

38.0

48.0

62.0

72.0

98.0

FLA

6.9

FLA

5.3

FLA

13.8

20.0

26.0

37.4

49.4

63.3

74.1

97.5

FLA

13.2

19.4

25.0

35.4

47.0

60.0

70.0

92.0

FLA

6.6

FLA

5.2

7.5

10.0

13.0

19.0

24.0

31.0

36.0

49.0

8.2

7.5

9.7

7.4

11.0

16.2

19.8

23.8

29.0

38.8

12.5

17.7

23.5

30.0

35.0

46.0

10.3

14.1

18.9

24.2

28.0

37.4

TABLE 19 – SUPPLY AND EXHAUST FAN MOTOR DATA - TEFC

High Efﬁciency

Premium Efﬁciency

Nominal Voltage

Motor

Nominal Voltage

Motor

208/3/60 230/3/60 460/3/60 575/3/60

FLA

15.4

21.2

27.5

40.0

54.0

64.0

78.0

101.0

FLA

14.2

19.6

25.6

37.0

50.0

60.0

72.0

94.0

FLA

7.1

FLA

5.4

FLA

13.6

21.0

26.0

38.9

51.0

63.3

77.0

99.0

FLA

13.0

18.8

25.0

37.0

48.0

60.0

72.0

92.0

FLA

6.5

FLA

5.2

7.5

9.8

8.2

7.5

9.4

8.0

12.8

18.5

25.0

30.0

36.0

47.0

11.4

15.3

19.1

25.0

29.6

38.0

12.5

18.5

24.0

30.0

36.0

46.0

10.0

14.8

19.0

23.9

29.0

36.8

TABLE 20 – CONDENSER FAN MOTOR RLA

208V/3PH/60HZ

230V/3PH/60HZ

460V/3PH/60HZ

575V/3PH/60HZ

RLA Each Motor

7.3

208V/3PH/60HZ

29.2

6.2

3.1

2.5

QUANTITY OF

UNIT SIZE

230V/3PH/60HZ

460V/3PH/60HZ

575V/3PH/60HZ

FANS

50-65 Tons

24.8

12.4

10.0

TABLE 21 – MISCELLANEOUS DATA

Nominal Voltage

Description

208V/230V

AMPS

2.4

460V

AMPS

1.1

575V

AMPS

0.9

Contrl Transformer 0.5 KVA

Convenience Outlet

Gas Heat

9.6

4.4

3.5

9.6

4.4

3.5

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Controls

CONTROL SEQUENCES FOR SIMPLICITY ELITE CONTROLLED UNITS

GENERAL

tion. Optional BACnet (MSTP) is available with a Modlinc

translator, which allows communication to a BACNet

(MSTP) based BAS.

The control system for the YORK Eco² Packaged

Rooftop Unit is fully self-contained and based around

a Rooftop Unit controller. To aid in unit setup, unit con-

troller is equipped with a user visual LCD interface that

consists of a 2 character above a 4-character display

on the front of the Simplicity Elite control board. The two

digit indicates the parameter of point number, and the

4-digit displays the current value or setting such as time

delay, cooling set point temperature, etc. This interface

provides veriﬁcation of the systems operating status,

enables ﬁeld installed options, and aids in troubleshoot-

ing system faults.

UNOCCUPIED / OCCUPIED SWITCHING

Depending on application, the unit can be indexed

between unoccupied and occupied modes of operation

by one of three methods: hard-wired input, internal time

clock, or BAS. A contact-closure input is provided for

hard-wiring to an external indexing device such as a

central time clock, thermostat with built-in scheduling,

or a manual switch. The unit controller is also equipped

with a built-in 7-day time clock which can be used, in

lieu of the contact closure input, to switch the unit be-

tween Unoccupied and Occupied modes of operation.

The internal time clock is fully conﬁgurable via the user

interface and includes Holiday scheduling. In addition to

the hard-wired input or the internal time clock, the unit

can also be indexed between unoccupied and occupied

modes of operation via BAS command.

Four program buttons, located around the LCDs, allow

the user to view and/or change 89 default parameter

settings, acknowledge 42 alarm codes, and perform a

unit run test. Up to ﬁve (5) alarm Codes are displayed

on the 4-character LCD.

Greater access to programming can be gained through

a Palm Pilot or Personal Computer (PC). Additionally,

up to 64 of the Simplicity family of controllers can be

networked together using a 3-conductor shielded cable

to communicate with your PC via the available YORK

recommended FREE net SerialAdapter and free YORK

downloaded software.

GAS HEATING OPERATION

Units supplied with gas heat can be equipped with one,

two, or three independently operated burner modules.

Each module is a fully self-contained furnace with all

necessary ignition controls, safeties, and gas valves.

The rooftop Unit Controller determines how the furnaces

are started and stopped and prevents furnace operation

if the Supply Fan airﬂow is not sufﬁcient or if the Supply

Air Temperature is excessively high.

An LED located on the lower center of the board provides

a ﬂash rate of 1 second (heart beat) when no alarms are

present. A ﬂash rate of 250 ms indicated that a current

alarm is present. The LED lights up constantly if the

board has failed and needs replaced, and will not light

when the board power is lost.

If a furnace module receives a signal to start from the

Unit Controller, the ignition control engages the furnace

inducer (draft) fan for a 30-second pre-purge cycle. At

the end of the 30-second pre-purge, the ignition control

will stop the furnace and allows the inducer fan to oper-

ate for a 30-second post-purge. Each furnace contains

a direct-spark-ignition system and includes safeties for

ﬂame and inducer fan veriﬁcation, high temperature and

ﬂame roll-out.

See the YPAL unit Installation/Operations Manual (IOM)

For 100.50-NOM6 (1107) for further Simplicity Elite

technical information about the normal Sequence of

Operation and user selectable options for our custom-

ized applications.

Some common selections include Occupied/Unoc-

cupied/recovery scheduling, equalized runtime for

compressors, Morning warm-up, Economizer operation,

Comfort, and Demand ventilation.

MORNING WARM-UP

For the maximum in system ﬂexibility, the YORK Eco²

Packaged Rooftop Unit can be operated by either a

typical 7-wire thermostat (2 cool/2 heat), a space tem-

perature sensor, or stand-alone (VAV only). Note, a ﬁeld

wiring terminal block is provided to facilitate unit setup

and installation.

Morning Warm-Up can be initialized by BAS or by the

Unit Controller if the Intelli-Start is used. If the Intelli-Start

is used, the Morning Warm-Up start time is calculated

through an adaptive algorithm.

When Morning Warm-Up is required, the Unit Controller

energizes the VAV heat relay, starts the Supply Fan and

qualiﬁes the Return Air Temperature for 5 minutes.

In lieu of the hard-wired control options, the rooftop

unit controller can be connected to and operated by a

Building Automation System (BAS). The Rooftop Unit

controller is equipped with a Modbus (RTU) communica-

The internal heat source (Gas, HW/Steam, or Electric)

is controlled to maintain the Return Air Temperature to

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

the Return Air Temperature Setpoint, Morning Warm-

Up ends when occupancy occurs (BAS, Intelli-Start, or

contact closure), or when the Maximum Morning Warm-

Up Time has expired.

perature is less than the reference temperature setting.

This method of economizing is the most accurate and

provides the highest degree of energy efﬁciency for a

packaged rooftop economizer.

ECONOMIZER OPERATION

VENTILATION CONTROL SEQUENCES

The unit can be equipped with one of three types of

optional economizers: dry-bulb, single-enthalpy, or com-

parative-enthalpy. When the unit controller determines

that Outside Air is suitable for economizing, the unit

controller will control the outside air damper(s) open

to provide economizer cooling. If economizer cooling

alone is insufﬁcient for the cooling load, the unit control-

ler shall stage up compressors, one at a time, to meet

demand.

Minimum OA Damper Position (CV Units)

When the unit goes into the Occupied mode of operation,

the unit controller shall open the Outside Air Damper to

a ﬁxed minimum position. The damper shall remain at

this position as long as the unit is in the occupied mode,

and the economizer is not suitable for cooling.

Minimum OA Damper Position (VAV Units)

The control logic for the three types of economizers is

as follows:

With Variable Air Volume units, there are two Minimum

OADamper Positions: one when the unit is at full speed

and the second when the unit is at approximately half

speed. These two points allow the control to linearly

reset the position of the OA damper in response to fan

speed.

Dry-Bulb Economizer

The dry-bulb economizer is the default economizer

control scheme. With the dry-bulb economizer, the unit

controller monitors the Outside Air temperature only

and compares it to a reference temperature setting.

Outside Air is deemed suitable for economizing when

the Outside Air temperature is determined to be less

than the reference temperature setting. This method of

economizing is effective, but is prone to some change-

over inefﬁciencies due to the fact that this method is

based on sensible temperatures only and does not take

Outside Air moisture content into consideration.

When the unit goes into the Occupied mode of operation,

the unit controller shall monitor the speed of the supply

fan and open the Outside Air damper to a calculated

minimum position based on the fan speed. This minimum

position shall vary as the speed of the fan changes. The

damper shall remain at this calculated position as long

as the unit is in the occupied mode, and the economizer

is not suitable for cooling.

EXHAUST CONTROL SEQUENCES

Single-Enthalpy Economizer

With the optional, single-enthalpy economizer, the unit

controller monitors the Outside Air enthalpy in addition

to the Outside Air temperature and compares it to a

reference enthalpy setting and a reference temperature

setting. Outside Air is deemed suitable for economizing

when the Outside Air enthalpy is determined to be less

than the reference enthalpy setting and the Outside Air

temperature is less than the reference temperature set-

ting. This method of economizing allows the reference

temperature setting to be set higher than the dry-bulb

Economizer and is a more efﬁcient packaged rooftop

economizer.

Barometric

The optional barometric exhaust system consists of a

lightweight barometric relief damper installed on the end

of the unit in the Return Air section. As more outside air

is introduced into the controlled zone due to Economizer

and Ventilation control sequences, the pressure inside

the building rises. As building static pressure increases

to overcome any exhaust duct static pressure, air will be

allowed to escape through the barometric relief damper.

Because this type of exhaust is not powered, the amount

of air exhausted will be limited to the static pressure that

will need to be overcome.

Dual-Enthalpy Economizer

Powered, Variable-Volume Exhaust-Discharge

Damper Controlled

With the optional, dual-enthalpy economizer, the unit

controller monitors and compares the Outside Air and

Return Air enthalpies, in addition to comparing the

Outside Air temperature to the reference temperature

setting. Outside Air is deemed suitable for economizing

when the Outside Air enthalpy is determined to be less

than the Return Air enthalpy and the Outside Air tem-

This optional variable-volume, powered-exhaust system

consists of a ﬁxed-speed fan conﬁgured with a propor-

tionally controlled discharge damper. The Rooftop Unit

controller monitors the pressure inside the building and

controls the Exhaust Damper and the Exhaust Fan.

If the Building Pressure rises, the Exhaust Damper is

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Controls (continued)

proportionally controlled open and the Exhaust Fan is

controlled ON. If the Building Pressure falls, the Exhaust

Damper is proportionally controlled closed and the Ex-

haust Fan is controlled OFF. The position of the Exhaust

Damper in which the Exhaust Fan is controlled ON and

OFF as well as the Building Pressure setpoint are user-

selectable from the Rooftop Unit User Interface.

SMOKE PURGE SEQUENCE

Acontact closure input (PURGE) is provided to place the

unit in smoke purge mode. When the contact is closed

the unit will operate as follows:

• Turn off all heating and cooling operation

• Set the outdoor air damper output to 100%

• Close the return to 0%

Powered, Variable-Volume Exhaust-VFD

Controlled

• Turn the supply fan on

• On VAV unit set the supply fan output to 100%.

• Turn the power exhaust fan on

This optional variable-volume, powered-exhaust system

consists of an Exhaust Fan driven by a Variable Fre-

quency Drive (VFD), which is controlled by the Rooftop

Unit controller. The Rooftop Unit controller monitors the

pressure within the building. As the pressure rises, the

VFD is controlled to increase Exhaust Fan speed. As

the pressure falls, the VFD is controlled to decrease

Exhaust Fan speed. The Building Pressure Setpoint is

user-selectable from the Rooftop Unit User Interface.

On/Off control is maintained the same as Exhaust-Dis-

charge Damper control stated above.

• On VFD driven exhaust fans set the exhaust fan

output to 100%

Note that 24 volts terminal (R) on the Simplicity control

board must be used as the 24 Volt AC source for switch

the contact to the Unit Controller Smoke Purge (PURGE)

input. Use of any power source external to the controller

will result in damage to the Unit Controller.

VAV SPECIFIC SEQUENCES

LOW-AMBIENT/HEAD-PRESSURE CONTROL

OPERATION

SUPPLY FAN OPERATION

For VAV units, the supply fan is controlled ON and OFF

based on the occupancy state. When the unit goes

into the Occupied mode of operation, the Rooftop Unit

controller will monitor the static pressure within the

supply-duct system and control the speed of the supply

fan to maintain a speciﬁed Duct Static Pressure setpoint.

A Variable Frequency Drive (VFD) is used on all VAV

units to vary the speed of the supply fan. Note, the use

of a VFD in lieu of inlet guide vanes provides for higher

energy efﬁciency for the unit by eliminating the losses

(air-pressure drop) typical of inlet guide vane systems.

The Rooftop Unit controller continuously monitors the

outside air temperature to determine if mechanical cool-

ing should be allowed. As a safety, if the Outside Air

temperature falls to or below the Low Ambient Lockout

temperature, mechanical cooling is prevented from

operating.

For units with economizers, the Low Ambient Lockout

temperature is typically low enough that mechanical

cooling will rarely be required. However, for some ap-

plications, mechanical cooling is required when the

Outside Air temperature is lower than the Low Ambient

Lockout temperature.

CV SPECIFIC SEQUENCES

COOLING OPERATION

Thermostat Control

For these applications, the unit must be equipped with

optional Low Ambient controls. For optional Low Ambi-

ent operation, the Rooftop Unit controller monitors the

refrigeration-system discharge pressure and controls the

speed of the ﬁrst stage condenser fan. If the discharge

pressure falls, the speeds of the condenser fan is re-

duced to maintain acceptable condensing pressures in

the refrigeration system. With the optional LowAmbient

controls, mechanical cooling is allowed down to Outside

Air temperatures of 0°F.

If a 7-wire thermostat (2 Cool/2 Heat) controls the unit,

all zone-temperature setpoint-control is maintained at

the thermostat. With this operation, the unit remains idle

until it receives a stage call from the thermostat. If “G”

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

is called from the thermostat, the Supply Fan will start.

Ventilation functions (if equipped) will be permitted to

run with an occupied signal. Economizer functions will

operate with a “G” call and a call for cooling.

the thermostat. With this operation, the unit remains idle

until it receives a stage call from the thermostat. If “G”

is called from the thermostat, the Supply Fan will start.

Ventilation functions (if equipped) will be permitted to

run with an occupied signal.

HEATING OPERATION

Thermostat Control

If a 7-wire thermostat (2 Cool/2 Heat) controls the unit,

all zone-temperature setpoint-control is maintained at

TABLE 22 – POWER-SUPPLY-CONDUCTOR SIZE RANGE

Dual-Point TB

Supply

Voltage

Single-Point

Disconnect

TB 1

TB 2

208V

230V

460V

575V

(2*) 250 kcmil-500 kcmil

6 AWG-400 kcmil

(2*) 2 AWG-500 kcmil

6 AWG-350 kcmil

6 AWG-400 kcmil

14 AWG-2/0

6 AWG-350 kcmil

14 AWG-2/0

6 AWG-400 kcmil

6 AWG-350 kcmil

14 AWG-2/0

NOTE: 2* = Dual pairs per phase

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

General Arrangement Drawings

BOTTOM SUPPLY / BOTTOM RETURN

O A

FIG. 3 – GENERAL ARRANGEMENT DRAWING

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

SIDE SUPPLY / REAR RETURN

O A

LD08296

FIG. 4 – GENERAL ARRANGEMENT DRAWING

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

General Arrangement Drawings

BOTTOM SUPPLY / SIDE RETURN

O A

LD08370

FIG. 5 – GENERAL ARRANGEMENT DRAWING

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

CURB LAYOUT DRAWING

333.69

41.19

66.08

35.10

21.00

66.19

84.50

71.83

1.75

TYP

229.56

14.00

NOTES:

1. Unit must be installed square and level.

2. Curb conﬁguration for “bottom” return and “bottom” supply.

3, These drawings are not intended as construction documents for the ﬁeld-fabricated roof curbs. YORK will not be responsible for the unit

ﬁt-up, leak integrity, or sound level for installation using ﬁeld-fabricated roof curbs.

4. The YPAL unit does not have a base pan under the condensing section of the unit. Field-fabricated roof curbs must have a cap on the top

of the condensing section of the curb to prevent moisture from entering the space. The cap design must be sloped away from the supply-

duct opening to the end of the unit for the drainage of the moisture off of the top of the cap.

LD08297

FIG. 6 – GENERAL ARRANGEMENT DRAWING

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Unit Weights

TABLE 23 – UNIT WEIGHTS

Model

050

051

060

061

Basic Unit*

7433

7800

7819

Economizers

No Outside Air

240

446

476

240

446

476

240

446

476

240

446

476

25% Outside Air Fixed Position Maual Damper

25% Outside Air 2 Position Actuated Damper

Full Modulation with Minimum Position

Power Exhausts

Fan, Motor, Modulating Damper and Hood

Fan, Motor, VFD, Barometric Damper and Hood

Gas Heat

501

506

501

506

501

506

501

506

375 MBH

162

324

486

162

324

486

162

324

486

162

324

486

750 MBH

1125 MBH (Bottom Discharge)

Options

Open Perimeter Curb

544

Condenser Coil Wire Guard

Copper Evaporator Coils (additional)

Copper Condenser Coils (additional)

12” Rigid Filters (additional)

312

516

319

312

516

319

416

773

319

416

773

319

*Unit includes FC fan w/ 20 hp motor, VFD and 2” throwaway ﬁlters

Center of Gravity

Condenser

Coil End

339

TABLE 24 – UNIT CENTER OF GRAVITY

050

060

051

Model

Basic Unit

184.1

191.0

187.4

194.9

50.2

49.9

50.0

49.5

184.1

191.0

187.4

194.9

50.2

49.9

50.0

49.5

061

Basic Unit w/ Econ.

Basic Unit w/ Econ. & Heating

Basic Unit w/ Econ. & Heating & Power Exhaust

Model

Basic Unit

179.8

186.7

183.5

190.9

49.9

49.7

49.8

49.3

179.6

186.5

183.2

190.7

50.0

49.7

49.8

49.3

Basic Unit w/ Econ.

Basic Unit w/ Econ. & Heating

Basic Unit w/ Econ. & Heating & Power Exhaust

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

TABLE 25 – UNIT CORNER WEIGHTS

050

051

Model

Basic Unit

1835

2039

2118

2366

2201

2417

2521

2751

1852

1873

2041

2034

1545

1580

1715

1750

1835

2039

2118

2366

2201

2417

2521

2751

1852

1873

2041

2034

1545

1580

1715

1750

Basic Unit w/ Econ.

Basic Unit w/ Econ. & Heating

Basic Unit w/ Econ. & Heating & Power Exhaust

060

061

Model

Basic Unit

1894

2097

2177

2424

2244

2461

2565

2795

1986

2008

2175

2168

1676

1711

1846

1881

1893

2096

2176

2423

2250

2466

2570

2801

1997

2018

2185

2178

1680

1715

1850

1885

Basic Unit w/ Econ.

Basic Unit w/ Econ. & Heating

Basic Unit w/ Econ. & Heating & Power Exhaust

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Guide Speciﬁcations

GENERAL

2. Roof curb transition.

3. Piping size and connection/header locations.

Scope

4. Electrical power requirements and wire/conduit and

overcurrent protection sizes.

The requirements of the General Conditions, Supple-

mentary Conditions, Division 1 and drawings apply to

all work herein.

5. All costs incurred to modify the building provisions

to accept the furnished units.

Provide microprocessor-controlled, air-cooled, dou-

ble-wall-construction, outdoor packaged rooftop air

conditioning product of the scheduled capacities and

performance as shown and indicated on the Drawings,

including but not limited to:

Warranty: Manufacturer shall warrant all equipment and

material of its manufacture against defects in workman-

ship and material for a period of eighteen (18) months

from date of shipment. Gas heat exchanger is 5 year.

1. The warranty shall include parts only during this

period.

1. Single-piece rooftop package

2. Charge of refrigerant and oil

3. Electrical power and control connections

4. Supply and return duct connections

5. Factory start-up

2. The warranty shall not include parts associated with

routine maintenance, such as belts, air ﬁlters, etc.

Delivery and Handling

Unit shall be delivered to the job site fully assembled,

wired, and charged with refrigerant and oil by the

manufacturer. Unit shall be stored and handled per

Manufacturer’s instructions.

Quality Assurance

All units are tested, rated or certiﬁed, as applicable, in

accordance with the following standards, guidelines

and codes:

All handling and storage procedures shall be per man-

ufacturer’s recommendations.

1. All units shall meet the latest ASHRAE 90.1 .2004

minimum energy-efﬁciency requirements (EER)

Submittals

Shop Drawings: Shop drawing submittals shall include,

but not limited to, the following: drawings indicating com-

ponents, dimensions, weights, required clearances, and

location, type and size of ﬁeld connections, and power

and control wiring connections.

2. All units shall meet the latest ASHRAE 62 require-

ments for ventilation and indoor air quality.

3. All units shall be rated in accordance with the ARI

Standard 340/360

Product Data: Product data shall include dimensions,

weights, capacities, ratings, fan performance, motor

electrical characteristics, and gauges and ﬁnishes of

materials.

4. All units shall be tested to ANSI/UL 1995 and CAN/

CSA C22.2 No. 236 standards

Documentation:

5. Gas heating units shall be designed in conform to

ANSI Z21.47-1998/CSA2.3-M98 standards and be

carry the UL listing

1. Fan curves with speciﬁed operating point clearly

plotted shall be provided.

2. Product data of ﬁlter media, ﬁlter performance data,

ﬁlter assembly, and ﬁlter frames shall be provided.

6. Units shall be ETL and ETL Canada listed

3. Electrical requirements for power supply wiring;

including wiring diagrams for interlock and control

wiring shall be supplied. Factory and ﬁeld-installed

wiring shall be clearly indicated.

Manufacturers: The design shown on the drawing is

based upon products of the manufacturer scheduled.

Alternate equipment manufacturers shall be acceptable

if equipment meets the scheduled performance and

complies with these speciﬁcations. If equipment manu-

factured by manufacturer other than that scheduled is

utilized, then the Mechanical Contractor shall be respon-

sible for coordinating with the General Contractor and all

affected Subcontractors to insure proper provisions for

installation of the furnished unit. This coordination shall

include, but not be limited to, the following:

4. Operation and maintenance documentation shall

be supplied in accordance with Section 01830

– Operation and Maintenance, including but not

limited to instructions for lubrication, ﬁlter replace-

ment, compressor, motor and drive replacement,

coil cleaning, ﬁlter maintenance, spare parts lists,

and wiring diagrams.

1. Structural supports for units.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Warranties

Paint: Exterior painted surfaces are designed to with-

stand a minimum of 1,000 salt spray hours when tested

in accordance with ASTM B-117.

Equipment shall include the manufacturer’s warranty not

less than eighteen months from the date of shipment.

Markings and Diagrams:All necessary tags and decals

to aid in the service and/or indicating caution areas shall

be provided. Electrical wiring diagrams shall be attached

to the control panel access door.

Extended parts warranty [optional] shall be included for

an additional one [ﬁve] years

Extended parts and labor warranty [optional] shall be

included for an additional one [ﬁve] years

Documentation: Installation and operation mainte-

nance manuals shall be supplied with each unit.

EQUIPMENT

Access Doors: Double wall access doors shall be

provided in the fan, coil, ﬁlter and inlet sections of the

unit. Doors shall be double-wall construction with a

solid liner and a minimum thickness of 1- inch. Doors

shall be attached to the unit with piano-type stainless

steel hinges. Latches shall be positive-action, creating

an airtight seal between the door and unit. Panels and

doors shall be completely gasketed with a closed-cell,

neoprene gasket. Door tiebacks shall be provided for

all doors to secure doors while servicing.

Product Speciﬁcation

Summary: Completely factory assembled unitized con-

struction packaged rooftop air conditioning unit including

a factory-mounted and wired unit controller and sensors,

single-point power connection 460V [208V/230V/ 575V]

three-phase, 60Hz power supply, outdoor air handling

section with return and supply openings, discharge ple-

num, direct-expansion refrigerant condensing section.

Factory Test: The refrigerant circuit shall be pressure-

tested, evacuated and fully charged with refrigerant and

oil. The completed refrigerant circuit shall undergo a

factory helium leak test and undergo an automated op-

erational run test and quality inspection prior to shipment.

The unit controller shall be conﬁgured and run tested at

the factory to minimize ﬁeld setup time. Gas ﬁred units are

run tested. If the unit is not conﬁgured and tested, then

the manufacturer shall provide ﬁeld start up and testing

to ensure that the controller is functioning properly.

Economizer Section:

[SELECT NONE, OR ONE OF THE FOLLOWING]

1. No Outside-Air: the unit has no provisions for outside

ventilation air.

1. Manual Outside-Air Damper:Amanually adjustable

outside-air damper capable of admitting 0-25%

outside-air shall be provided.

1. Two-Position, Outside-Air Damper: A two-position,

outside-air damper capable of admitting 0-25%

outside-air shall be provided. The minimum position

shall be manually adjustable from 0-25%. Control

shall be based on the occupied mode of the unit.

For occupied mode, the damper shall be open to

the minimum position and for unoccupied, it shall

be closed.

Unit Construction:

Base Rail: The unit shall include an integral design base

rail with lifting points clearly marked and visible on the

base rail, and ﬁve (5) 1-1/4” FPT connections for con-

densate drainage. The unit base shall be designed with

a recessed curb mounting location. The recessed curb

mounting surface shall provide a continuous surface for

ﬁeld application of curb gasketing to create a weather

tight seal between the curb and unit.

1. Modulating Economizer: The economizer segment

shall be designed to use outside air for cooling and

ventilation and provide a means of exhausting air

from the air-handling unit. The segment shall consist

of parallel-acting, low-leak dampers. The return-air,

outside-air and exhaust-air dampers shall be sized

for 100% of nominal unit airﬂow. The exhaust-air

damper assembly shall have a factory-assembled

rain hood. The rain hood shall have a drip-lip the full

width of the hood to channel moisture away from

the air being drawn into the unit.

Casing: Casing shall be complete post and panel

construction with exterior skin. All panels, doors, walls,

uprights, ﬂoor panels and rooﬁng shall be one-inch thick;

1-1/2 pound density insulation. Units are speciﬁcally

designed for outdoor installation.

Roof: The unit roof shall be bowed with the peak in the

middle of the unit and sloped to both sides of the unit

for drainage. A drip lip shall run the length of the unit to

prevent water drainage down the side of the unit. Roof

and sidewall seams shall be continuously caulked and

covered with formed galvanized seam caps. All panel

fasteners shall be secured through standing seams to

prevent fastener penetrations that are exposed to the

air stream.

[SELECT ONE OF THE FOLLOWING TYPES OF

BUILDING PRESSURE CONTROL]

2. No Building Exhaust/Relief: The unit has no provi-

sions to exhaust building return air.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Guide Speciﬁcations (continued)

2. Barometric Relief Damper: Building air exhaust shall

be accomplished through barometric relief damp-

ers installed in the return-air plenum. The dampers

open relative to the building pressure. The opening

pressure shall be adjustable.

selected for a 1.5 service factor and antistatic belts

shall be furnished. All drives shall be ﬁxed pitch.

Fan shafts shall be selected to operate well below

the ﬁrst critical speed and each shaft shall be fac-

tory coated after assembly with an anticorrosion

coating.

2. On/Off, Fan-Powered Exhaust: A DWDI Class I or

II forward-curved centrifugal exhaust fan shall be

provided to exhaust building return air to relieve

building static pressure. The fans shall be constant

volume and operate based on either a building static

pressure, or outside air-damper position.

Filter Section:

[SELECT A FILTER RACK, FILTER MEDIA, AND

SWITCH IF DESIRED]

1. Angled Filter Rack: two-inch throwaway ﬁlters shall

be provided in an angled ﬁlter rack.

2. Powered Exhaust with Modulating Discharge Damp-

er: A DWDI Class I or II forward-curved centrifugal

exhaust fan shall be provided to exhaust building

return air to relieve building static pressure. The

fans shall operate at a constant volume and operate

based on building static pressure. Exhaust airﬂow

shall be modulated via a parallel-acting, control

damper. The exhaust-air dampers shall be sized

for 100% of the exhaust airﬂow.

1. Angled Filter Rack: two-inch carbon media ﬁlters

shall be provided in an angled ﬁlter rack.

1. Angled Filter Rack: two-inch cleanable ﬁlters shall

be provided in an angled ﬁlter rack.

1. Angled Filter Rack: two-inch high-efﬁciency (30%)

pleated ﬁlters shall be provided in an angled ﬁlter

rack.

1. Flat Filter Rack: 60-65% efﬁcient rigid ﬁlters with a

two-inch, high-efﬁciency pleated pre-ﬁlters shall be

provided in a ﬂat ﬁlter rack.

2. Powered Exhaust with Variable-Frequency-Drive:A

twin DWDI Class I or II forward-curved centrifugal

exhaust fan shall be provided to exhaust building

return air to relieve building static pressure. Exhaust

airﬂow shall be modulated via a factory-installed

and commissioned variable-frequency-drive with

the same nameplate horsepower as the supply fan

motor.

1. Flat Filter Rack: 90-95% efﬁcient rigid ﬁlters with a

two-inch, high-efﬁciency pleated pre-ﬁlters shall be

provided in a ﬂat ﬁlter rack.

2. Dirty Filter Alarm: A dirty-ﬁlter switch shall be pro-

vided and wired to the rooftop unit control panel.

Upon closure of the switch, the controller shall

display a dirty-ﬁlter fault. The setting of the switch

can be changed manually to close at a speciﬁed

pressure drop across the ﬁlters.

[FOR POWERED-EXHAUST OPTIONS ABOVE,

USE THE FOLLOWING]

Evaporator Section

3. Fan Motor: Fan motors shall be NEMA design ball-

bearing types with electrical characteristics and

horsepower as speciﬁed. Motors shall be 1750

RPM, ODP [TEFC] open drip-proof type. The mo-

tor shall be located within the unit on an adjustable

base.

1. Cooling Coil: Evaporator coils shall be direct-expan-

sion type with intertwined circuiting to assure com-

plete coil-face activity during part-load operation.

Coil tubes shall be 3/8” OD copper, with internally

enhanced tubes. Fins shall be enhanced mechani-

cally expanded to bond with the copper tubes.

Coil casing shall be fabricated from heavy-gauge

galvanized steel. All coils shall be pressure tested

at a minimum of 450 PSIG.

Mountings: Fan and fan motor shall be internally

mounted and isolated on a full width isolator sup-

port channel using 1-inch [2-inch] springs. The fan

discharge shall be connected to the fan cabinet

using a ﬂexible connection to insure vibration-free

operation.

2. IAQ Drain Pan: The main coil drain pan shall be

double-sloped with a condensate connection

through the base rail of the unit. Clearance between

the evaporator coil and the drain pan shall allow

for easy access to the drain pan for cleaning, and

shall be visible for inspection without the removal

of components.

Bearings and Drives: Fan bearings shall be self-

aligning, pillow block or ﬂanged type regreaseable

ball bearings and shall be designed for an average

life (L50) of at least 200,000 hours.All bearings shall

be factory lubricated and equipped with standard

hydraulic grease ﬁttings and lube lines extended

to the motor side of the fan. Fan drives shall be

3. Intermediate Drain Pan: Coils with ﬁnned height

greater than 48” shall have an intermediate drain

pan extending the entire ﬁnned length of the coil.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

The intermediate pans shall have drop tubes to guide

condensate to the main drain pan.

1. Cooling Only: The discharge-air-temperature sen-

sor shall be located in the discharge plenum and

be located such that it accurately measures the

supply-air temperature. Walls shall be lined with a

solid liner to prevent erosion of the insulation and

to separate insulation from the air stream.

Supply Fan Section

1. Fan: The fan section shall be equipped with a single

double-width, double-inlet (DWDI), forward-curved

[airfoil optional] centrifugal type wheel for horizontal

discharge.An access door shall be provided on both

sides of the unit for fan/motor access.

1. Staged Gas Heat: The heating section shall include

an induced-draft furnace with two stages [four

stages or six stages] of heating capacity.

2. Fan Motor: Fan motors shall be NEMA design ball-

bearing types with electrical characteristics and

horsepower as speciﬁed. Motors shall be 1750

RPM, open drip-proof type [TEFC optional]. The

motor shall be located within the unit on an adjust-

able base.

Heat Exchanger: The heat exchanger shall be con-

structed of tubular aluminized steel [stainless steel],

with stainless steel ﬂue bafﬂes and ﬂue assembly.

Burner and Ignition Control: The burner shall include

a direct-driven induced-draft combustion fan with

energy efﬁcient intermittent direct spark ignition,

redundant main gas valves with pressure regula-

tor.

Mountings: Fan and fan motor shall be internally

mounted and isolated on a full-width, isolator-sup-

port channel using 1-inch [2-inch] springs. The fan

discharge shall be connected to the fan cabinet

using a ﬂexible connection to insure vibration-free

operation.

Combustion-Air Fan: The inducer fan(s) shall main-

tain a positive ﬂow of air through each tube, to expel

the ﬂue gas and to maintain a negative pressure

within the heat exchanger relative to the conditioned

space.

Bearings and Drives: Fan bearings shall be self-

aligning, pillow block or ﬂanged type regreaseable

ball bearings and shall be designed for an average

life (L50) of at least 200,000 hours.All bearings shall

be factory lubricated and equipped with standard

hydraulic grease ﬁttings and lube lines extended

to the motor side of the fan. Fan drives shall be

selected for a 1.5 service factor and antistatic belts

shall be furnished.All drives shall be ﬁxed pitch. Fan

shafts shall be selected to operate well below the

ﬁrst critical speed and each shaft shall be factory

coated after assembly with an anticorrosion coat-

ing.

Safety Devices:Ahigh-limit controller with automatic

reset to prevent the heat exchanger from operat-

ing at an excessive temperature shall be included.

An air-proving switch shall prevent ignition until

sufﬁcient airﬂow is established through the heat

exchanger. Arollout switch shall provide secondary

airﬂow-safety protection. The rollout switch shall

discontinue furnace operation if the ﬂue becomes

restricted.

Flue: The furnace ﬂue shall be shipped loose to pro-

tect it from damage during transit. The ﬂue shall be

ﬁeld-mounted by the installing contractor. The ﬂue

outlet shall be located above the unit to help prevent

recycling of combustion gases back through the

heat exchanger. Agency Certiﬁcation: Gas heating

sections are both ETC/CETL approved to both US

and Canadian safety standards.

3. VAV Fan Control: VAV supply fan control shall be

accomplished by using a variable-frequency drive

matched to the supply-fan motor HP. The VFD

shall include an integral DC line reactor to reduce

harmonic distortion in the incoming and outgoing

power feeds. If a DC line reactor is not provided, an

AC line reactor must be provided. Inlet guide vanes

shall not be acceptable. VFD control keypads shall

be located in the control cabinet for accessibility and

servicing while the unit is operating.

1. Heat Exchanger(s): The heat exchanger(s) shall be

constructed of tubular aluminized steel [stainless

steel], with stainless steel ﬂue bafﬂes and ﬂue as-

sembly.

4. Optional VFD manual bypass: a three-contactor

manual bypass shall be provided to permit replace-

ment of the VFD in the event of a power failure.

Condenser Section

1. Condenser Fans: Condenser fans shall be matched

up with compressors to optimize system control.

Condenser fans shall be propeller-type, directly

driven by permanently lubricated TEAO motor.

Discharge Plenum

[SELECT ONE OF THE FOLLOWING HEAT/NO

HEAT CONFIGURATIONS]

2. Condenser Coil: Condenser coils shall be seam-

less copper tubes, arranged in staggered rows,

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

Guide Speciﬁcations (continued)

mechanically expanded into the end sheets. Coils

are conﬁgured in a V-bank conﬁguration, with indi-

vidual ﬂat coils rotated from the vertical plane for

protection from hail damage for each condensing

circuit. Condensing coils shall have a subcooler for

more efﬁcient, stable operation.

Controls (Simplicity Elite)

1. Enclosure: Unit shall be shipped complete with

factory-conﬁgured, installed, wired and tested roof-

top unit controller housed in a rain-and-dust-tight

enclosure with hinged, latched, and gasket sealed

door.

3. Compressors: Units shall use industrial-duty her-

metic scroll compressors, piped and charged with

oil and R-410Arefrigerant. Compressors shall have

an enlarged, liquid-carrying capacity to withstand

rugged operating conditions. Compressor frame

shall be cast iron, with cast-iron ﬁxed and orbiting

scrolls. Each compressor shall feature a line break,

designed to protect the compressor from over-tem-

perature and over-current conditions. Compressors

shall be vibration-isolated from the unit, and installed

in an easily accessible area of the unit.All compres-

sor-to-pipe connections shall be brazed to minimize

potential for leaks. Each compressor shall include

an oil sight glass.

2. Basic Controls: Control shall include automatic start,

stop, operating, and protection sequences across

the range of scheduled conditions and transients.

The rooftop unit controller shall provide automatic

control of compressor start/stop, energy-saver-

delay and anti-recycle timers, condenser fans, and

unit alarms. Automatic reset to normal operation

after power failure. Software stored in nonvolatile

memory, with programmed setpoints retained in

lithium battery backed real time clock (RTC) memory

for minimum 5 years.

3. Diagnostics: Upon demand, the controller shall run

through a self-diagnostic check to verify proper

operation and sequence loading. The rooftop unit

controller shall continually monitor all input and out-

put points on the controller and to maintain proper

operation. The unit shall continue to operate in a

trouble mode or shut down as necessary to prevent

an unsafe condition for the building occupants, or to

prevent damage to the equipment. In the event of

a unit shutdown or alarm, the operating conditions,

date and time shall be stored in the shutdown history

to facilitate service and troubleshooting.

4. Low Ambient: Compressors shall operate down to

0°F Control [optional] by monitoring the refrigeration

system discharge pressure and adjusting condenser

airﬂow to maintain the proper head pressure to

protect compressor operation.

5. In-Line Refrigerant Driers: Refrigerant piping in-

cludes thermal-expansion valves with replaceable

thermostatic elements, high- and low-pressure

switches, anti-recycling timing device to prevent

compressor restart for five minutes after shut-

down.

4. Controls and BAS Communications

(RS-485) Modbus: The unit shall include Modbus

communications directly from the unit controller.

Equipment that is not native to the unit.

6. Freezestat: Freezestats shall be provided to prevent

coil freeze-up and reduce the risk of liquid ﬂoodback

to the compressor.

A ﬁeld installed Modlinc Gateway device is required

by the manufacturer to communicate to BACnet

(MSTP), A control points list shall be provided by

the manufacturer to facilitate communications

programming with the building automation system.

Programming, establishing communications and

commissioning shall be the responsibility of the in-

stalling controls contractor. Start-up assistance and

support may be purchased from the manufacturer.

7. Condenser Wire Grill [optional]: The condenser

section shall be enclosed by a wire grill condenser

enclosure on the three exposed sides. Plastic ﬁnish

shall match the color and salt-spray speciﬁcations

of the unit exterior.

8. Hot-Gas Bypass [optional on constant-volume

units]: Hot-gas-bypass piping shall be provided to

enable compressor unloading to as low as 5% to

better match cooling demand at low loads, prevent

excessive cycling of the compressor, and reduce

the risk of coil freeze-up.

Analog inputs: 0-10VDC inputs shall be provided

for remote reset of supply air temperature, and duct

static pressure

9. Compressor-sound treatment [optional]: Compres-

sor sound blankets shall be provided to attenuate

radiated sound from the compressors.

Binary outputs: Dry (or “wet”) contacts shall be pro-

vided for alarm outputs for supply fan fault, cooling/

heating fault, or general/sensor faults. Contacts

shall also be provided for occupied/unoccupied,

shutdown, smoke purge, exhaust or pressurization

operations; call for cooling or heating.

10. Service Valves [optional]: Liquid, suction and dis-

charge service valves shall be included to provide

a means of isolating the refrigerant charge in the

system so that the refrigeration system may be

serviced without removing the charge of the unit.

JOHNSON CONTROLS

FORM 100.50-EG5 (108)

EXECUTION

Installation

3. Manufacturers of units not having a protective mem-

brane, fully formed around the equipment exterior,

covering the entire top, side and end panel surface

area shall be required to ship equipment covered

with a tarp, in crating or in a closed truck as is nec-

essary to ensure product protection from road salt/

chemicals damage, moisture and dirt inﬁltration.

Arrangements for long term storage at the job site

shall be required.

General: Installing contractor shall install rooftop unit(s),

including components and controls required for opera-

tion, in accordance with rooftop unit manufacturer’s writ-

ten instructions and recommendations. Rooftop units

shall be installed as speciﬁed.

1. Unit(s) speciﬁed shall include a protective covering

membrane for such equipment being shipped by

truck, rail, or ship. The membrane is fully formed

around the equipment exterior. The membrane cov-

ers the entire top, side and end panel surface as

to protect the product effectively during shipping &

storage including “Long Term Storage”. Storing on

jobsite shall no longer require the unit(s) to be cov-

ered with a tarp as long as the covering membrane

has not been removed.

Location: Locate the rooftop unit as indicated on draw-

ings, including cleaning and service maintenance clear-

ance per Manufacturer instructions.Adjust and level the

rooftop unit on support structure.

INSPECTION AND START-UP SUPERVISION

A factory-trained service representative of the manu-

facturer shall supervise the unit startup and application

speciﬁc calibration of control components.

2. All size or shape equipment including electrical

components, especially those not built with weath-

erproof enclosures, variable-frequency drives and

end devices shall be effectively covered for protec-

tion against rain, snow, wind, dirt, sun fading, road

salt/ chemicals, rust, and corrosion during shipping

cycle. Equipment shall remain clean and dry.

JOHNSON CONTROLS

Tele. 800-861-1001

www.york.com

P.O. Box 1592, York, Pennsylvania USA 17405-1592

Subject to change without notice. Printed in USA

Form 100.50-EG5 (108)

Supersedes: Nothing

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