York R-407C User Manual

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Page 1

Packaged Rooftop

Air Conditioning Units

FORM 100.50-EG1 (201)

R-407C OPTIMIZED

50 THROUGH 65 TONS

00406VIP

Page 2

PAGE

Nomenclature .........................................................................................................3

Introduction .............................................................................................................4

Physical Data..........................................................................................................7

Application Data......................................................................................................9

Cooling Performance Data....................................................................................12

Fan Performance ..................................................................................................20

Electrical Data.......................................................................................................24

Controls ................................................................................................................26

Power Wiring ........................................................................................................31

Field Control Wiring ..............................................................................................34

General Arrangement Drawing .............................................................................35

Curb Layout Drawing ............................................................................................37

Mechanical Specifications.....................................................................................38

TABLES

1 Physical Data .............................................................................................7

2 Cooling Performance Data – 50 Ton Model..............................................12

3 Cooling Performance Data – 55 Ton Model..............................................14

4 Cooling Performance Data – 60 Ton Model..............................................16

5 Cooling Performance Data – 65 Ton Model..............................................18

6 50 Through 65 Ton Supply Fan Data........................................................20

7 50 Through 65 Ton Exhaust Fan Data......................................................21

8 Component Static Pressure Drops........................................................... 22

9 Compressors ........................................................................................... 24

10 Supply and Exhaust Fan Motor Electrical Data ........................................ 25

1 1 Condenser Fan Motors ............................................................................25

12 Controls and Convenience Outlet.............................................................25

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FIGURES

1 Packaged Rooftop Air Conditioning Unit .................................................. 4

2 Single-Point Power Supply Wiring.......................................................... 31

3 Single-Point Power Supply Wiring with Non-Fused Disconnect ............. 32

4 Dual-Point Power Supply Wiring ............................................................ 33

5 Field Control Wiring ............................................................................... 34

6 General Arrangement Drawing – Bottom Return, Bottom Supply ........... 35

7 General Arrangement Drawing – Rear Return, Left or Right Supply ...... 36

8 Curb Layout Drawing.............................................................................. 37

FORM 100.50-EG1

PAGE

NOMENCLATURE

BASIC MODEL NUMBER

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

BASE PRODUCT TYPE NOMINAL CAPACITY APPLICATION REFRIGERANT VOLTAGE DUCT LOCATIONS DESIGN SPECIAL Y050 B17BA

P055 28L S

: YORK : Packaged

Rooftop

A065 58 B

: Air-Cooled

L S

: Scroll

: 50-ton : 55-ton

060 4 6 R X

: 60-ton : 65-ton

: Cooling Only

: Constant Volume

: VAV, VFD

: VAV , VFD w/ Manual Bypass

: R-407C

: 200 / 3 / 60 : 230 / 3 / 60 : 460 / 3 / 60 : 575 / 3 / 60

: Bottom Supply : Left Supply : Right Supply : Bottom Return

: Front Return : Side Return

: Rev. Level A : Std. Product : Special

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Introduction

FIG. 1 – PACKAGED ROOFTOP AIR CONDITIONING UNIT

00406VIP

FEATURES/BENEFITS

Ecological and Economical Design

• First packaged R TU with 407C optimized design

• Cooling and Heating – Superior operating performance provides lower operating costs. Smaller steps of cooling capacity provide tighter control of building environment and occupant comfort while optimizing energy efficiency .

• Indoor Air Quality (IAQ) – Outside air economizers provide energy savings in free cooling mode, and can provide a healthier and more comfortable building environment by introducing fresh outside air into the building as needed. Indoor Air Quality (IAQ) requirements for building ventilation and comfort are controlled through the microprocessor control panel. Optional air flow measurement provides an accurate means of tracking air quality and alerting the occupants or building owner to unhealthy situations.

• High-Efficiency Motors – High-ef ficiency motors are available for optimum energy efficiency. All motors used on the eco2 packaged rooftop air conditioner meet U.S. EP ACT 1992 minimum requirements.

Indoor Air Quality (IAQ)

• Double-sloped stainless steel drain pan – This double-sloped inclined stainless steel drain pan facilitates removal of evaporator condensate. Sloped

in two directions conforming to ASHRAE 62n, this drain pan swiftly minimizes any condensate within the unit. Best of all, the drain pan is accessible for periodic cleaning required by IAQ standards.

• Smart ventilation – YORK maintains the leadership role in IAQ products with adaptive ventilation control. The OptiLogicTM controls provide continuous monitoring of air quality and take action by opening the outside air dampers, bringing in the right amount of fresh air before air impurities reach uncomfortable or even dangerous levels.

• Air flow measurement – Precise measurement of ventilation air flow is possible using an air flow measurement station which can be installed in the economizer section. Proper ventilation air flow is required to ensure sufficient fresh air is in the building. A myriad of air flow measurement options are available from minimum air flow to high-accuracy full air flow capabilities. The complete system is designed as an integrated component of the OptiLogicTM control system to ensure optimum system performance.

• Double-wall construction – Rigid double-wall construction throughout provides ease of cleaning and protects against insulation fiber entrainment in the breathable air. Double-wall construction also helps improve the acoustical characteristics of the air handling unit.

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FORM 100.50-EG1

• Enhanced filtration – The Eco2 unit gives designers the flexibility to meet various IAQ requirements with a full range of rigid and throwaway filters at various efficiency levels.

Reliable Scroll Compressor Technology

Reliable, efficient, trouble-free operation is the true measure of a packaged rooftop’s value. That’s why YORK Eco2 Packaged Rooftop Air Conditioners use established scroll-compressor technology to deliver dependable, economical performance in a wide range of applications. With the Eco2 Packaged 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. YORK also employs the latest sealing technology to avoid metal-tometal contact. Axial sealing is accomplished with floating tip seals, while radial sealing utilizes a microcushion of oil. The result: a maintenance-free compressor providing minimum wear and maximum runtime.

A scroll compressor operates with two scroll members— a fixed scroll and an identical orbiting scroll turned 180 degrees, like two hands curled and interlocked together. As the orbiting scroll oscillates against the fixed scroll, it traps and compresses suction gas inside involute pockets. As the orbiting scroll moves, the gas is compressed into the central area, where it is discharged as compressed gas. High efficiency is achieved through a precisely controlled orbit and the use of advanced scroll geometry . There is no wasted motion. All rotating parts are statically and dynamically balanced to ensure optimal performance over the long haul.

Balanced components and precision machining also ensure that smooth compression occurs in all involute pockets simultaneously . When compression forces are equally distributed over the entire scroll surface, equal forces in opposing directions cancel one another, minimizing any imbalance. Consequently, compression is smooth, continuous, and quiet. Vibration isolators on each compressor handle normal vibration. For extra quiet operation, acoustic sound blankets for each compressor are available as options.

Serviceability

• OptiLogicTM – fully-integrated factory-packaged controls are standard on every unit and include a display unit with a 4x20 character LCD display. OptiLogic

continually monitors all control setpoints and configurations. If a unit or control component, or sensor fails, the controller notifies the user of a problem. If desired, YORK service can provide remote monitoring and automatically schedule a service technician to make the repair and maintain your comfort.

• Access doors – full-sized access doors provide easy access into the unit for routine maintenance and inspection.

• Suction & discharge service valves – oversized service valves to provide isolation and quick reclamation and charging of system refrigerant are available to minimize downtime and simplify the service and repair task.

• VFD Fan Motor Control with Manual Bypass – Optional manual VFD bypass reduces time required for troubleshooting, commissioning and system balancing.

• Convenience Outlet – for maintenance tasks requiring power tools, an optional 1 10V GFCI power supply can power lights, drills or any other power hand tool needed.

• Filter Maintenance Alarm – An optional filter maintenance alarm indicates when a filter becomes dirty and requires replacement or cleaning.

Install with Ease and Safety

• Factory run-tested – Each unit is subjected to a series of quality assurance checks as well as an automated quality control process before being runtested. Fans and drives are balanced at the factory during testing. The factory run-test ensures safe, proper operation when the unit is installed and reduces installation and commissioning time.

• Single-point power connection – Single-point power connection reduces installation time by providing a single point for incoming power, including

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Introduction

the optional convenience outlet. All incoming power is connected in one location, reducing the cost of field-supplied and installed power wiring.

• Factory-mounted and wired controls – All control points within the unit are factory-installed, wired and tested. The OptiLogic nicate with BACNet IP.

• Non-fused disconnect – A factory-installed nonfused disconnect switch simplifies unit installation and serviceability by reducing installed labor costs. The disconnect switch is interlocked with the power cabinet ensuring that all power to the unit has been disconnected before servicing.

Design Flexibility

• Low Ambient Operation – Head-pressure control is accomplished via a VFD motor controller rather than an inefficient and noisy condenser fan damper. By varying the speed of the condenser fan, better control and quieter operation is obtained during the colder months. Low ambient controls are available

controls can commu-

on all systems offering higher rooftop cooling capacity than competitive units.

• Hot Gas Bypass – Optional on constant volume units, hot gas bypass reduces the cycling of compressors which helps prolong the life of the equipment.

• Supply Air Openings – Side supply connections are available on select configurations, offering more flexibility for duct layout and improving sound transmission characteristics.

• Compressor Sound Blankets – For applications in sound-sensitive areas, compressor sound blankets are available to reduce sound emitted from the rooftop unit.

• Fan Spring Isolators – One-inch spring isolation is used to prevent vibration transmission from the rooftop unit’s supply fan to the building. Two-inch spring isolation is also available.

• Harsh Environments – A variety of coil coating and materials are available as well as hail guards to protect coils from weather damage. Seismic and hurricane duty curbs and fan restraints are available.

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FORM 100.50-EG1

Physical Data

T ABLE 1 – PHYSICAL DATA

MODEL SIZE 50 55 60 65 GENERAL DATA

Length (Inches) 336 336 336 336 Width (Inches) 92 92 92 92 Height (Inches) 82 82 82 82

Operating Weights (Lbs.) (base unit, no options)

Cooling Only (Rigging & Refrigerant) 8,080 8,290 8,530 8,740

Rigging Weights (Lbs.) (base unit, no options)

Cooling Only 8,010 8,210 8,440 8,640

Option Weights (Lbs.)

Power Exhaust (Blower, motor, fan skid & mod damper) 647 647 647 647 Power Exhaust (Blower, motor, fan skid, VFD & baro damper) 654 654 6 54 654 100% AMS (Measurement Station & Mounting) 110 110 110 110 25/75% AMS (Measurement Station & Mounting) 130 130 130 130 Min. AMS (Measurement Station & Mounting) 40 40 40 40 Barometric only 36 36 36 36 Condenser Hail Guard 32 32 32 32 Copper Condenser Coils 617 617 793 793 Copper Evaporator Coils 262 320 400 500

Roof Curb Weights (Lbs.)

14" Full Perimeter Roof Curb 787 787 787 787 14" Open Condenser Roof Curb 555 555 555 555

Compressor Data

Quantity / Size (Nominal Tons ) 4/13 4/13 4/15 4/15 Type Scroll Scroll Scroll Scroll Capacity Steps (%) 25, 50, 75, 100 25, 50, 75, 100 25, 50, 75, 100 25, 50, 75, 100

Supply Fan and Drive

Quantity 1111 Type FC FC FC FC Size 25-22 25-22 25-22 25-22 Motor Size Range (min. to max. HP) 7.5-40 7.5-40 7.5-40 7.5-40 Air Flow Range (min. to max. cfm) 10000-22500 12000-24000 14000-27000 14000-27000 Static Pressure Range (min. to max. ESP) 0-4" 0-4" 0-4" 0-4"

Exhaust Fan

Quantity 2222 Type FC FC FC FC Size 15-15 15-15 15-15 15-15 Motor Size Range (min. to max. HP) 5-20 5-20 5-20 5-20 Air Flow Range (min. to max. cfm) 0-20000 0-20000 0-20000 0-20000 Static Pressure Range (min. to max. ESP) 0-1" 0-1" 0-1" 0-1"

Evaporator Coil

Size (square feet) 48.8 48.8 48.8 48.8 Number of rows/fins per inch 3/8 4/8 4/12 5/10 Tube Diameter/Surface 1/2"/enhanced 1/2"/enhanced 1/2"/enhanced 1/2"/enhanced

Condenser Coil (Aluminum Fins)

Size (square feet) 121.3 121.3 121.3 121.3 Number of rows/fins per inch 3/14 3/14 3/18 3/18 Tube Diameter 3/8" 3/8" 3/8" 3/8"

Condenser Coil (Copper Fins – Opt)

Size (square feet) 121.3 121.3 121.3 121.3 Number of rows/fins per inch 3/14 3/14 3/18 3/18 Tube Diameter 3/8" 3/8" 3/8" 3/8"

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Physical Data

(continued)

T ABLE 1 – PHYSICAL DATA (Cont’d)

MODEL SIZE 50 55 60 65 GENERAL DATA Condenser Fans

Quantity 4444 Type Prop. Prop. Prop. Prop. Diameter (inches) 36 36 36 36

Filters – 2" throwaway

Quantity 8 12 8 12 8 12 8 12 Size (length x width) (in.) 25x16 25x20 25x16 25x20 25x16 25x20 25x16 25x20 Total Filter Face Area (square feet) 63.9 63.9 63.9 63.9

Filters – 2" cleanable

Quantity 8 12 8 12 8 12 8 12 Size (length x width) (in.) 25x16 25x20 25x16 25x20 25x16 25x20 25x16 25x20 Total Filter Face Area (square feet) 63.9 63.9 63.9 63.9

Filters – 2" pleated (30% efficient)

Quantity 8 12 8 12 8 12 8 12 Size (length x width) (in.) 25x16 25x20 25x16 25x20 25x16 25x20 25x16 25x20 Total Filter Face Area (square feet) 63.9 63.9 63.9 63.9

Filters – 12" rigid 65%, 2" 30% prefilter

Quantity 149149149149 Size (length x width) (in.) 16x20 25x16 25x20 16x20 25x16 25x20 16x20 25x16 25x20 16x20 25x16 25x20 Total Filter Face Area (square feet) 44.6 44.6 44.6 44.6

Filters – 12" rigid 95%, 2" 30% prefilter

Quantity 149149149149 Size (length x width) (in.) 16x20 25x16 25x20 16x20 25x16 25x20 16x20 25x16 25x20 16x20 25x16 25x200 Total Filter Face Area (square feet) 44.6 44.6 44.6 44.6

Filters – 2" carbon (30% efficient)

Quantity 8 12 8 12 8 12 8 12 Size (length x width) (in.) 25x16 25x20 25x16 25x20 25x16 25x20 25x16 25x20 Total Filter Face Area (square feet) 63.9 63.9 63.9 63.9

Refrigerant HFC-407C HFC-407C HFC-407C HFC-407C Minimum OA Temp. for Mech. Clg. (°F) 45 45 45 45 Low Ambient Option Min. OA Temp. (°F) 0000

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Application Data

FORM 100.50-EG1

LOCATION

Of the many factors that can affect the acoustical characteristics of a rooftop installation, one of the most important is the unit location. Ideally , the rooftop unit should be installed away from sound-sensitive areas, such as conference rooms, auditoriums and executive offices. Possible locations could be above storage areas, hallways, mechanical or utility rooms, or bathrooms.

The eco door 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

• Also avoid locations beneath windows or between

• Optional condenser coil protection should be used

air conditioning units are designed for out-

having a minimum sun exposure and an adequate supply of fresh air for the condenser.

structures.

for seashore locations or other harsh environments.

Spreader bars must be used to prevent damage to the unit casing. All lifting lugs must be used when lifting the rooftop unit.

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.

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 not be tied to the main building foundation as noises may be transmitted into the building structure.

For ground level installations, precautions should be taken to protect the unit from tampering by, or injury to, unauthorized persons. Erecting a fence around the unit is another common practice.

• The unit should be installed on a roof that is structurally strong enough to support the weight of the unit with a minimum of deflection. Extreme caution should be taken when the unit is mounted on a wood structured roof. 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.

• Location of unit(s) should also be away from building flue stacks or exhaust ventilators to prevent possible reintroduction of contaminated air through the outside air intakes.

• 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 and 12-feet to any adjacent units is required 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.

ECONOMIZER

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.

Comparative enthalpy operation is the most accurate and efficient means of economizer operation. The OptiLogic control monitors the return and outside air energy content, and selects the lower of the two for operation.

V AV SUPPLY AIR PRESSURE CONTROL

Traditional packaged rooftop systems use inlet guide vanes (IGVs) f or du ct st atic pre ssur e con trol. These control supply duct pressure by modulating dampers (introducing losses and inef ficiencies) on the intlet of the fan, open and closed. V ariable frequency drives (VFDs) offer superior fan speed control and quieter, energy ef ficient operation.

RIGGING

Proper rigging and handling of the equipment is mandatory during unloading and setting it into position to retain warranty status.

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IGV inefficiency can be compared to the operation of a car. Modulating air flow with an IGV is like pressing on the gas to drive the car, but modulating the speed of the car by simultaneously pressing on the brake. VFD modulation is speed modulation by using just the gas pedal.

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Application Data

(continued)

For VAV applications, the YORK eco2 unit 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.

HARSH ENVIRONMENTS – CONDENSER AND EV APORATOR COIL PROTECTION

For harsh environmental conditions such as seashore applications, YORK offers three types of coil protection: copper fin material, black fin and T echnicoat 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 T echnicoat coating be used for maximum protection.

Copper Fin 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.

Pre-Coated Condenser Fins

Black fin coating (yellow fin for evaporator fins) is precoated application epoxy on aluminum fin stock to guard from corrosive agents and insulate against galvanic potential. It is used for mild seashore or industrial locations. This can provide corrosion resistance comparable to copper fin coils in typical seashore locations.

Post-Coated Condenser Fins

T echnicoat (a post-coated application of epoxy) can be used for seashore and other corrosive applications with the exception of strong alkalides, oxidizers, wet bromide, 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 factors. The application should be further reviewed and approved by the consulting engineer or owner based on their knowledge of the job site conditions.

BUILDING EXHAUST SYSTEMS

Building exhaust systems are often necessary when economizers are used to bring in outdoor air. Without proper building exhaust, the building may become overpressurized. The exhaust system maintains the proper building pressure by expelling the appropriate amount of air from the building. Exhaust systems are typically designed to exhaust approximately 10% less air than what is entering the building. This provides a slight positive pressure on the building.

100% modulating exhaust with building static pressure sensing and control

The 100% exhaust system can be configured with either control actuated dampers or VFDs for modulating control. The unit controller monitors the building pressure using a differential pressure transducer and maintains the required building static pressure by modulating the exhaust control. If the building has other means of exhaust or building pressure is not important, on/off or barometric control may be used.

100% modulating exhaust with fan on/off control

The 100% exhaust system can be configured for on/off operation eliminating the expense of the damper actuators or VFDs. This exhaust system can be controlled by either the outside air damper position, or a building static pressure sensor.

Barometric exhaust

Barometric exhaust can be used when smaller amounts of air at low static pressure variations within the building or other means of building exhaust are employed. Barometric exhaust is commonly used where there are only small fluctuations in building pressure or where building static pressure control is not necessary .

ROOF CURB

Optional 14-inch full-perimeter or open condenser roof curbs can be provided if necessary for mounting to the building roof. These curbs come disassembled and require installation in the field. For bottom supply and return duct openings, the curbs have matching connections to ease installation. A pipe chase that matches the rooftop unit is also included in the curb footprint for through-the-curb utility connections.

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FORM 100.50-EG1

The curb should be located according to the location 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.

Duct work should be supported independently of the unit.

ACOUSTICAL CONSIDERA TIONS

The eco

unit is designed for lower sound levels than competitive units by using flexible fan connections, fan spring isolators, double-wall construction, and lower speed and horsepower fans. For VAV applications, VFDs are used instead of inlet guide 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 acoustical characteristics of the entire installation must never be overlooked. Additional steps for the acoustical characteristics 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 consider, at a minimum, the impact of the equipment location, rooftop installation, building structure, and duct work.

SELECTION PROCEDURE

Given:

Required total cooling capacity of 600 mbh and sensible cooling capacity of 450 mbh with evaporator entering air conditions of 83°F dry bulb and 67°F wet bulb. Design ambient temperature is 95°F dry bulb. Supply air requirements are 17500 cfm of air at 2.25 IWG external static pressure. Power supply is 460V/3ph/60Hz

and the unit requires a modulating economizer, 2-inch pleated filters, bottom supply and bottom return air openings and is constant volume.

Select Unit:

1. Determine the internal static pressure drop of the cabinet by referencing Table 8.

Wet evaporator coil 0.54 Bottom supply opening 0.14 Bottom return opening 0.13 2-inch pleated filters 0.10 Economizer openings 0.24 Modulating economizer dampers 0.31

T otal 1.46 IWG

2. Determine the total static pressure by adding the internal to the external static pressure.

TSP = 1.46 IWG + 2.25 IWG

= 3.71 IWG total static pressure

3. Determine the BHP of the supply fan from Table 6 using the supply air flow and total static pressure. From the table, we interpolate to get 15.1 BHP . Assuming a drive loss of 3% and a motor efficiency of 90%, we can calculate the heat rejection of the supply fan motor as:

(2545 x 15.1)/(0.90 x (1-0.03)) = 44.0 mbh

Required Cooling Capacities:

Total = 600 + 44.0 = 644 mbh Sensible = 450 + 44.0 = 494 mbh

4. Required total and sensible capacities are 644 mbh and 494 mbh, respectively. Using the Cooling Performance Data starting with Tables 2, locate the table with the correct ambient air temperature. Next, trace the 83°F entering air dry bulb temperature to match the 17,500 cfm and 67°F entering wet bulb temperature condition. The resulting conditions are, from the table, 645 mbh total cooling capacity and 497 mbh sensible cooling capacity . Thus, a 50-ton unit is selected.

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Cooling Performance Data –

50 Ton Model

T ABLE 2 – COOLING PERFORMANCE DATA – 50 TON MODEL

85° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

10000 67 653 548 646 500 635 454 637 416 632 377 626 343

14000 67 665 581 656 523 647 474 647 431 643 388 637 349

17500 67 684 634 672 558 666 505 663 454 660 406 653 359

20000 67 705 695 689 597 686 540 680 479 679 425 672 370

22500 67 715 715 697 616 696 557 689 492 688 435 680 376

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 700 477 700 431 695 387 692 353 691 311 ——

62 640 640 608 608 590 583 582 562 569 514 574 455 72 711 500 708 445 705 399 701 360 699 316 ——

62 654 654 625 625 606 606 594 547 583 498 585 439 72 729 536 721 467 719 418 715 370 712 324 ——

62 680 680 652 652 632 625 612 550 606 497 603 438 72 749 576 736 492 736 439 732 382 726 333 ——

62 710 710 682 682 661 661 633 582 631 523 622 467 72 758 595 742 504 743 449 739 388 732 338 ——

62 715 715 696 610 674 549 643 486 643 429 631 370

95° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

10000 67 628 536 630 494 615 445 616 404 609 383 605 331

14000 67 642 569 638 515 627 465 625 419 619 382 615 338

17500 67 665 625 651 547 645 497 640 443 635 382 630 348

20000 67 691 691 665 582 665 532 656 470 653 382 647 360

22500 67 703 703 672 599 674 549 664 483 661 382 655 366

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 673 468 673 416 669 375 667 340 664 301 ——

62 618 618 590 590 569 513 571 481 562 435 562 390 72 684 491 682 432 678 388 676 348 673 306 ——

62 635 635 607 607 586 541 580 500 572 453 571 407 72 701 526 696 458 693 407 690 360 686 315 ——

62 661 661 634 634 612 587 594 531 588 481 586 433 72 720 565 712 486 709 429 705 373 701 325 ——

62 691 691 663 663 641 641 609 565 606 511 602 462 72 729 584 720 500 717 439 712 380 708 329 ——

62 704 704 675 658 655 629 617 556 614 488 610 447

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FORM 100.50-EG1

T ABLE 2 – COOLING PERFORMANCE DATA – 50 TON MODEL (CONT’D)

105° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

10000 6 7 590 513 596 478 589 434 591 390 593 354 589 318

14000 6 7 609 550 608 501 600 454 600 406 601 366 597 326

17500 6 7 638 607 625 537 618 485 615 432 613 384 609 337

20000 6 7 670 670 645 577 638 520 631 461 626 404 623 350

22500 6 7 686 695 654 596 647 537 639 475 632 414 629 356

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 649 464 650 409 645 365 644 330 644 290 ——

62 597 597 573 573 536 498 549 460 544 429 542 384 72 658 483 658 424 653 378 651 338 650 295 ——

62 614 614 589 589 556 527 557 483 553 446 550 397 72 673 512 670 447 667 397 663 350 661 303 ——

62 641 641 614 614 587 571 570 520 567 472 563 419 72 689 545 684 472 682 419 677 364 672 311 ——

62 670 670 642 642 621 621 584 561 582 500 576 443 72 696 560 690 485 690 430 683 371 678 315 ——

62 684 684 655 655 637 644 591 580 590 514 583 455

115° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

10000 6 7 494 424 524 387 514 349 515 313 514 281 518 254

14000 6 7 548 509 545 449 541 406 539 359 536 317 537 276

17500 6 7 577 555 557 481 555 435 552 383 548 336 547 288

20000 6 7 609 609 570 517 571 468 566 410 562 357 558 301

22500 6 7 624 624 576 534 579 484 572 423 568 367 563 307

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 563 368 562 318 567 286 558 258 563 233 ——

62 498 498 501 501 442 424 458 349 467 343 467 306 72 592 432 588 370 589 325 585 286 583 246 ——

62 550 550 533 533 498 488 494 434 491 395 489 349 72 608 465 603 397 600 346 600 300 594 253 ——

62 578 578 550 550 527 522 513 478 504 422 500 371 72 625 503 618 427 613 368 616 316 606 261 ——

62 609 609 568 568 560 560 534 528 518 452 513 396 72 633 520 626 441 619 379 623 324 611 265 ——

62 624 624 577 577 575 578 544 548 525 467 520 408

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Cooling Performance Data –

55 Ton Model

T ABLE 3 – COOLING PERFORMANCE DATA – 55 TON MODEL

85° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

12000 67 677 564 651 511 641 463 642 423 637 382 631 346

16000 67 693 598 661 535 653 484 652 438 649 394 642 353

19250 67 728 677 684 586 680 530 675 472 673 419 666 367

22000 67 750 713 695 613 694 554 688 490 687 433 679 375

24000 67 758 720 701 625 701 565 693 497 692 439 685 378

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 732 488 704 437 700 393 696 356 695 313 ——

62 660 648 616 616 598 598 588 564 576 515 579 456 72 743 512 712 452 709 405 706 363 703 319 ——

62 680 661 634 634 615 587 600 531 591 481 591 421 72 767 564 731 485 731 433 727 378 722 331 ——

62 725 701 673 673 652 652 627 572 624 515 616 458 72 781 592 741 502 742 448 738 387 731 337 ——

62 750 713 694 613 672 554 642 490 641 433 630 375 72 786 604 746 510 747 454 743 390 736 340 ——

62 760 720 701 602 681 534 648 473 649 416 636 357

95° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

12000 67 651 554 634 504 621 454 621 411 613 382 610 334

16000 67 668 585 643 525 633 476 630 427 624 382 620 341

19250 67 707 671 661 572 659 521 651 462 647 382 642 357

22000 67 728 701 671 597 673 546 663 481 660 382 654 365

24000 67 737 709 675 607 678 556 667 489 665 382 659 369

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 706 479 678 424 673 381 671 344 668 303 ——

62 641 626 598 598 577 527 575 490 567 444 566 398 72 716 502 687 441 683 394 680 352 677 309 ——

62 661 644 616 616 594 554 585 511 577 462 576 415 72 738 554 708 478 704 422 700 369 696 322 ——

62 705 682 654 654 633 625 605 555 600 502 598 453 72 751 581 719 497 715 438 7 11 379 707 328 ——

62 730 703 675 675 653 653 616 578 613 524 609 473 72 756 593 723 506 720 444 715 383 711 331 ——

62 740 709 675 607 662 556 620 489 618 382 614 369

YORK INTERNATIONAL

Page 15

FORM 100.50-EG1

T ABLE 3 – COOLING PERFORMANCE DATA – 55 TON MODEL (CONT’D)

105° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

12000 6 7 593 531 602 489 594 443 595 397 597 359 593 322

16000 6 7 619 569 613 513 606 464 605 415 605 372 601 330

19250 6 7 679 651 639 565 632 510 626 452 622 398 619 346

22000 6 7 711 696 653 593 645 534 637 473 631 412 628 355

24000 6 7 724 693 659 605 651 545 642 481 635 418 632 359

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 642 473 654 416 649 371 647 334 647 292 ——

62 592 605 581 581 546 512 553 471 549 437 546 390 72 661 493 662 432 658 384 655 342 654 297 ——

62 618 623 598 598 566 542 561 496 558 454 554 405 72 701 535 679 465 678 413 673 360 669 308 ——

62 679 661 634 634 611 606 580 549 578 492 572 436 72 723 558 689 483 689 428 682 370 677 314 ——

62 711 682 653 653 635 641 590 577 588 512 582 453 72 733 567 693 490 693 435 686 374 681 317 ——

62 725 691 661 661 645 656 594 590 593 521 586 460

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

115° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

12000 6 7 606 535 579 477 571 435 566 390 563 350 559 312

16000 6 7 623 562 588 498 582 454 577 406 573 362 570 319

19250 6 7 660 632 606 544 605 496 599 440 595 388 592 335

22000 6 7 680 660 617 568 617 518 611 458 607 402 603 343

24000 6 7 689 668 621 578 622 527 617 466 613 408 608 347

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 657 460 624 400 618 357 613 321 610 284 ——

62 598 581 557 567 528 517 519 458 517 425 512 381 72 665 482 633 417 627 371 623 330 619 288 ——

62 617 600 572 578 547 539 534 487 528 443 523 395 72 682 529 653 455 647 399 645 350 640 297 ——

62 659 639 602 602 589 587 565 551 552 481 547 426 72 692 554 663 476 658 414 657 360 651 302 ——

62 682 660 616 614 611 613 582 585 565 501 559 443 72 696 565 668 484 663 421 662 365 656 304 ——

62 692 669 622 620 621 624 589 589 570 510 565 450

YORK INTERNATIONAL

Page 16

Cooling Performance Data –

60 Ton Model

T ABLE 4 – COOLING PERFORMANCE DATA – 60 TON MODEL

85° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 67 736 586 728 522 729 339 727 440 725 408 723 377

18000 67 795 720 773 632 771 504 769 519 767 468 761 415

21000 67 824 787 795 687 792 587 790 558 787 498 780 434

24000 67 854 854 818 742 814 670 810 598 808 528 799 453

27000 67 867 867 828 767 823 708 820 616 818 541 808 461

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 804 495 804 461 801 277 798 383 792 344 ——

62 689 689 663 663 658 442 656 543 647 493 654 424 72 846 609 840 538 837 410 833 426 827 372 ——

62 771 771 740 740 725 617 704 630 700 572 699 502 72 867 666 858 576 855 477 851 448 845 386 ——

62 813 813 779 779 759 705 728 673 726 611 722 541 72 888 722 876 614 872 544 868 470 862 401 ——

62 854 854 817 817 792 792 752 716 752 651 744 580 72 897 748 884 632 880 574 876 480 870 407 ——

62 873 873 835 835 808 817 763 736 764 669 755 598

95° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 67 723 527 692 464 703 397 703 432 699 437 696 363

18000 67 775 678 752 570 745 529 742 508 736 455 732 402

21000 67 802 753 783 623 766 594 761 546 755 463 751 421

24000 67 828 828 813 675 788 660 780 584 774 472 769 441

27000 67 840 863 827 699 797 691 789 601 782 476 778 450

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 773 491 771 442 769 336 769 368 763 331 ——

62 671 671 645 645 631 474 642 505 655 416 673 318 72 814 599 808 524 804 434 802 414 797 361 ——

62 750 750 719 719 699 620 684 604 682 550 681 494 72 834 652 827 565 822 482 819 438 814 376 ——

62 789 789 756 756 732 693 706 653 696 616 685 582 72 854 706 846 607 840 531 835 461 831 391 ——

62 828 828 793 793 766 766 727 703 709 683 689 670 72 864 730 854 626 848 553 843 471 838 397 ——

62 846 846 810 810 782 788 737 726 716 714 690 710

YORK INTERNATIONAL

Page 17

FORM 100.50-EG1

T ABLE 4 – COOLING PERFORMANCE DATA – 60 TON MODEL (CONT’D)

105° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 6 7 690 469 676 304 672 458 681 416 681 384 678 350

18000 6 7 745 635 718 508 713 550 715 494 711 442 708 389

21000 6 7 773 718 739 610 734 597 732 533 727 471 723 409

24000 6 7 801 801 761 712 754 643 750 572 742 500 738 428

27000 6 7 814 839 771 759 764 664 757 589 749 514 744 437

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 753 500 744 438 741 392 741 357 737 319 ——

62 652 652 627 627 587 554 616 489 632 454 624 412 72 782 588 778 514 774 457 771 403 767 347 ——

62 726 726 697 697 664 648 658 589 655 536 655 480 72 797 633 794 551 790 490 787 425 782 361 ——

62 763 763 732 732 702 694 679 639 667 576 670 515 72 811 677 811 589 806 522 802 448 798 375 ——

62 800 800 767 767 741 741 700 690 679 617 686 549 72 818 697 818 606 814 537 809 459 804 382 ——

62 817 817 783 783 758 759 710 709 684 636 693 565

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

115° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 6 7 629 574 647 512 647 447 643 411 635 370 633 338

18000 6 7 700 673 688 603 683 537 680 484 673 429 669 376

21000 6 7 736 722 708 648 701 582 699 521 692 458 687 395

24000 6 7 772 772 728 693 718 627 717 558 711 487 706 414

27000 6 7 788 788 737 714 727 647 726 574 719 501 714 423

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 726 485 711 413 702 376 698 345 689 309 ——

62 626 626 607 622 562 543 561 467 582 447 574 404 72 749 572 742 496 736 440 732 389 726 335 ——

62 699 699 666 673 639 629 625 578 620 524 617 472 72 760 615 758 538 754 473 749 411 744 349 ——

62 735 735 695 698 677 672 657 634 640 563 638 505 72 772 658 774 580 771 505 766 433 763 362 ——

62 772 772 724 724 715 715 690 690 659 602 659 539 72 777 678 781 599 779 520 773 443 771 368 ——

62 788 788 737 735 732 733 704 706 668 619 669 555

YORK INTERNATIONAL

Page 18

Cooling Performance Data –

65 Ton Model

T ABLE 5 – COOLING PERFORMANCE DATA – 65 TON MODEL

85° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 67 785 669 774 605 771 554 772 502 768 456 764 406

18000 67 802 713 788 638 784 582 784 525 780 473 776 418

21000 67 827 788 810 694 806 630 804 563 800 502 796 439

24000 67 862 862 833 750 828 678 824 601 820 531 815 460

27000 67 878 878 843 776 838 700 833 619 829 544 824 469

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 840 584 839 516 836 467 833 418 828 368 ——

62 754 754 724 724 695 640 710 589 707 542 706 492 72 853 615 851 540 848 486 844 431 840 377 ——

62 779 779 748 748 719 676 723 620 719 568 717 513 72 876 668 871 582 868 518 864 454 859 392 ——

62 821 821 787 787 760 739 745 674 741 612 737 548 72 899 721 892 623 888 550 884 477 878 407 ——

62 862 862 827 827 801 801 767 727 762 656 757 584 72 909 745 901 642 898 564 893 488 887 413 ——

62 878 878 843 765 820 686 777 604 772 530 766 455

95° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 67 767 658 747 593 743 542 744 491 740 443 737 393

18000 67 782 699 759 625 756 570 755 513 751 460 748 406

21000 67 800 768 781 681 777 618 774 551 770 489 766 426

24000 67 837 837 802 737 798 665 793 589 788 519 784 447

27000 67 854 854 812 762 807 687 801 606 797 532 792 456

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 810 572 808 504 806 454 802 405 798 357 ——

62 733 733 704 704 676 631 686 581 682 530 680 477 72 822 603 820 528 817 473 813 419 809 365 ——

62 756 756 726 726 699 664 697 610 694 556 691 500 72 844 656 839 569 836 505 832 442 827 380 ——

62 797 797 764 764 737 720 717 661 714 600 710 538 72 866 709 858 610 855 537 850 464 844 394 ——

62 837 837 802 802 776 776 737 712 734 644 729 577 72 875 733 867 629 863 552 859 475 852 401 ——

62 854 854 812 753 794 674 746 592 743 518 738 441

YORK INTERNATIONAL

Page 19

FORM 100.50-EG1

T ABLE 5 – COOLING PERFORMANCE DATA – 65 TON MODEL (CONT’D)

105° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 6 7 737 646 717 581 714 529 714 476 711 430 708 381

18000 6 7 753 683 730 613 726 556 725 499 721 447 718 393

21000 6 7 771 746 752 668 746 604 744 538 738 476 734 413

24000 6 7 809 809 774 722 766 651 762 576 756 505 751 433

27000 6 7 826 826 784 747 775 673 770 594 763 518 759 442

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 780 560 777 493 774 442 771 393 768 342 ——

62 710 710 682 682 650 621 658 565 655 516 653 466 72 792 591 788 516 785 461 781 406 777 351 ——

62 732 732 703 703 672 650 669 595 666 542 663 486 72 812 643 805 555 802 493 798 429 794 365 ——

62 771 771 739 739 711 700 689 647 685 586 681 522 72 831 696 822 595 820 524 816 452 810 379 ——

62 809 809 774 774 750 750 709 698 704 630 699 558 72 840 720 830 613 828 539 823 462 817 386 ——

62 826 826 791 791 767 772 718 721 712 650 707 574

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

115° AIR ON CONDENSER COIL

CAPACITY (MBH) AT ENTERING DRY BULB (°F)

CFM

14000 6 7 708 639 690 570 686 517 684 463 681 417 678 368

18000 6 7 724 671 700 599 696 544 694 486 690 434 687 380

21000 6 7 741 725 716 650 714 591 711 523 706 462 703 400

24000 6 7 779 779 732 700 732 637 728 561 722 491 718 419

27000 6 7 796 796 740 723 740 658 736 578 729 504 725 428

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

ENTERING 90 86 83 80 77 74

WB (°F) CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC CAP SHC

72 748 548 744 478 742 429 738 378 735 330 ——

62 681 681 664 664 621 608 625 550 628 503 625 452 72 759 578 754 502 752 448 748 392 744 338 ——

62 704 704 679 679 644 634 642 583 638 528 635 473 72 776 629 771 543 768 479 766 415 759 352 ——

62 741 741 706 706 682 678 669 640 655 571 651 508 72 794 680 789 584 784 511 784 438 774 366 ——

62 779 779 732 732 721 721 697 697 672 615 668 543 72 802 703 797 603 791 525 792 449 781 372 ——

62 796 796 740 717 738 648 710 563 680 490 676 414

YORK INTERNATIONAL

Page 20

Fan Performance

T ABLE 6 – 50 THROUGH 65 TON SUPPLY FAN DATA

TOTAL STATIC PRESSURE (inches of water column)

CFM 0.50 1.00 1.50 2.00 2.50 3.00

STD. AIR RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP

10000 249 1.7 321 2.5 382 3.3 –– –– –– –– –– — 12000 269 2.5 335 3.4 392 4.4 443 5.3 493 6.4 –– — 14000 290 3.6 352 4.7 405 5.8 454 6.9 497 8.0 540 9.1 16000 312 5.1 371 6.3 421 7.5 467 8.7 510 10.0 549 11.2 17500 329 6.3 386 7.7 435 9.0 478 10.4 519 11.7 558 13.1 18000 334 6.8 391 8.2 439 9.6 482 10.9 522 12.3 561 13.8 19250 348 8.1 404 9.6 451 11.1 493 12.5 532 14.0 570 15.5 20000 357 8.9 412 10.5 458 12.1 499 13.5 538 15.1 575 16.6 21000 370 10.1 423 11.9 468 13.5 510 15.1 547 16.7 583 18.3 22000 383 11.4 434 13.3 478 15.0 520 16.7 555 18.3 591 20.0 22500 387 12.0 440 14.1 484 15.8 524 17.6 560 19.2 595 20.9 24000 398 13.9 458 16.6 500 18.4 537 20.2 574 22.1 607 23.8 26000 417 16.8 478 20.2 520 22.3 559 24.4 593 26.3 626 28.3 27000 429 18.6 490 22.3 533 24.6 572 26.8 602 28.6 638 30.9

T ABLE 6 – 50 THROUGH 65 TON SUPPLY FAN DATA (CONT’D)

TOTAL STATIC PRESSURE (inches of water column)

CFM 3.50 4.00 4.50 5.00 5.50 6.00

STD. AIR RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP

10000 –– –– –– –– –– –– –– –– –– –– –– –– 12000 –– –– –– –– –– –– –– –– –– –– –– –– 14000 585 10.5 –– –– –– –– –– –– –– –– –– –– 16000 587 12.5 622 13.8 663 15.4 700 17.0 –– –– –– –– 17500 595 14.5 629 15.9 664 17.3 697 18.8 549 15.9 575 17.3 18000 597 15.2 631 16.6 664 18.0 696 19.5 732 21.2 766 23.0 19250 605 17.1 638 18.6 670 20.1 702 21.6 734 23.3 765 25.0 20000 609 18.2 642 19.8 674 21.4 705 22.9 735 24.5 764 26.1 21000 617 19.9 649 21.6 681 23.3 710 24.9 740 26.6 769 28.2 22000 624 21.7 655 23.4 688 25.3 715 26.9 744 28.6 773 30.4 22500 628 22.7 659 24.4 691 26.3 719 28.0 748 29.8 776 31.5 24000 640 25.7 671 27.5 700 29.4 729 31.4 759 33.4 783 35.1 26000 656 30.2 687 32.2 716 34.2 742 36.1 769 38.2 798 40.5 27000 665 32.7 693 34.6 723 36.8 751 38.9 778 41.0 802 43.1

YORK INTERNATIONAL

Page 21

TABLE 7 – 50 THROUGH 65 TON EXHAUST FAN DATA

TOTAL STATIC PRESSURE (inches of water column)

CFM 0.50 1.00 1.50 2.00 2.50 3.00

STD. AIR RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP

10000 674 3.30 801 4.18 –– ––– –– –– –– –– –– –– 12000 713 4.84 823 5.82 929 6.87 –– –– –– –– –– –– 14000 762 6.84 858 7.98 952 9.12 1043 10.32 1132 11.62 –– –– 16000 819 9.36 904 10.73 988 12.04 1070 13.33 1150 14.69 1229 16.10 18000 879 12.42 957 14.04 1032 15.56 1107 17.02 1179 18.48 –– –– 20000 943 16.18 1014 18.04 –– –– –– –– –– –– –– ––

FORM 100.50-EG1

YORK INTERNATIONAL

Page 22

Fan Performance

(continued)

T ABLE 8 – COMPONENT STATIC PRESSURE DROPS (INCHES OF WATER COLUMN)

SIZE

50 10000 0.22 0.15 0.04 0.08 0.08 0.04 0.06 0.04 0.05 0.01 0.04 0.08

55 12000 0.30 0.21 0.06 0.11 0.11 0.06 0.09 0.06 0.07 0.02 0.06 0.11

60 14000 0.38 0.27 0.09 0.15 0.15 0.08 0.12 0.09 0.09 0.03 0.07 0.14

65 14000 0.38 0.27 0.09 0.15 0.15 0.08 0.12 0.09 0.09 0.03 0.07 0.14

For Aluminum Fins Only

AIR FLOW

CFM STD. AIR

12000 0.30 0.21 0.06 0.11 0.11 0.06 0.09 0.06 0.07 0.02 0.06 0.11 14000 0.38 0.27 0.09 0.15 0.15 0.08 0.12 0.09 0.09 0.03 0.07 0.14 16000 0.47 0.35 0.11 0.20 0.20 0.11 0.15 0 .11 0.11 0.04 0.09 0.16 17500 0.54 0.41 0.14 0.24 0.24 0.13 0.18 0.14 0.12 0.05 0.10 0.19 18000 0.57 0.44 0.14 0.25 0.25 0.13 0.19 0.14 0.13 0.05 0.10 0.19 20000 0.67 0.53 0.18 0.31 0.31 0.17 0.24 0.18 0.15 0.06 0.12 0.22 21000 0.72 0.58 0.20 0.35 0.35 0.18 0.26 0.20 0.16 0.07 0.13 0.24 22000 0.78 0.63 0.21 0.38 0.38 0.20 0.29 0.21 0.17 0.08 0.14 0.26 22500 0.80 0.66 0.22 0.40 0.40 0.21 0.30 0.22 0.17 0.08 0.15 0.26

14000 0.38 0.27 0.09 0.15 0.15 0.08 0.12 0.09 0.09 0.03 0.07 0.14 16000 0.47 0.35 0.11 0.20 0.20 0.11 0.15 0 .11 0.11 0.04 0.09 0.16 18000 0.57 0.44 0.14 0.25 0.25 0.13 0.19 0.14 0.13 0.05 0.10 0.19 19250 0.63 0.49 0.16 0.29 0.29 0.15 0.22 0.16 0.14 0.06 0.12 0.21 20000 0.67 0.53 0.18 0.31 0.31 0.17 0.24 0.18 0.15 0.06 0.12 0.22 22000 0.78 0.63 0.21 0.38 0.38 0.20 0.29 0.21 0.17 0.08 0.14 0.26 24000 0.89 0.74 0.25 0.45 0.45 0.24 0.34 0.25 0.19 0.09 0.16 0.29

16000 0.47 0.35 0.11 0.20 0.20 0.11 0.15 0 .11 0.11 0.04 0.09 0.16 18000 0.57 0.44 0.14 0.25 0.25 0.13 0.19 0.14 0.13 0.05 0.10 0.19 20000 0.67 0.53 0.18 0.31 0.31 0.17 0.24 0.18 0.15 0.06 0.12 0.22 21000 0.72 0.58 0.20 0.35 0.35 0.18 0.26 0.20 0.16 0.07 0.13 0.24 22000 0.78 0.63 0.21 0.38 0.38 0.20 0.29 0.21 0.17 0.08 0.14 0.26 24000 0.89 0.74 0.25 0.45 0.45 0.24 0.34 0.25 0.19 0.09 0.16 0.29 26000 1.01 0.86 0.30 0.53 0.53 0.28 0.40 0.30 0.21 0.11 0.19 0.32 27000 1.07 0.92 0.32 0.57 0.57 0.30 0.43 0.32 0.23 0.12 0.20 0.34

EVAPORATOR SUPPLY RETURN AIR

COILS OPENING OPENING

WET DRY BOTTOM LEFT RIGHT BOTTOM REAR SIDES AWAY ABLE ED

2" 2" 2"

THROW- CLEAN- PLEAT-

FILTERS

CARBON

YORK INTERNATIONAL

Page 23

FORM 100.50-EG1

FILTERS ECONOMIZER DAMPERS

RIGID FILTER

RACK NO.

MEDIA

0.05 0.21 0.30 0.07 0.05 0.11 0.08

0.07 0.28 0.38 0.11 0.08 0.16 0.11

0.09 0.34 0.46 0.15 0 .11 0.21 0.15

0.11 0.42 0.55 0.20 0.14 0.26 0.20

0.12 0.47 0.62 0.24 0.17 0.31 0.24

0.13 0.49 0.65 0.25 0.18 0.32 0.25

0.15 0.58 0.74 0.31 0.22 0.39 0.31

0.16 0.62 0.79 0.35 0.24 0.42 0.34

0.17 0.66 0.84 0.38 0.27 0.46 0.37

0.17 0.68 0.87 0.40 0.28 0.48 0.39

0.07 0.28 0.38 0.11 0.08 0.16 0.11

0.09 0.34 0.46 0.15 0 .11 0.21 0.15

0.11 0.42 0.55 0.20 0.14 0.26 0.20

0.13 0.49 0.65 0.25 0.18 0.32 0.25

0.14 0.54 0.71 0.29 0.20 0.36 0.29

0.15 0.58 0.74 0.31 0.22 0.39 0.31

0.17 0.66 0.84 0.38 0.27 0.46 0.37

0.19 0.75 0.95 0.46 0.32 0.54 0.45

0.09 0.34 0.46 0.15 0 .11 0.21 0.15

0.11 0.42 0.55 0.20 0.14 0.26 0.20

0.13 0.49 0.65 0.25 0.18 0.32 0.25

0.15 0.58 0.74 0.31 0.22 0.39 0.31

0.16 0.62 0.79 0.35 0.24 0.42 0.34

0.17 0.66 0.84 0.38 0.27 0.46 0.37

0.19 0.75 0.95 0.46 0.32 0.54 0.45

0.21 0.84 1.06 0.55 0.37 0.62 0.52

0.23 0.89 1.11 0.59 0.40 0.67 0.56

0.09 0.34 0.46 0.15 0 .11 0.21 0.15

0.11 0.42 0.55 0.20 0.14 0.26 0.20

0.13 0.49 0.65 0.25 0.18 0.32 0.25

0.15 0.58 0.74 0.31 0.22 0.39 0.31

0.16 0.62 0.79 0.35 0.24 0.42 0.34

0.17 0.66 0.84 0.38 0.27 0.46 0.37

0.19 0.75 0.95 0.46 0.32 0.54 0.45

0.21 0.84 1.06 0.55 0.37 0.62 0.52

0.23 0.89 1.11 0.59 0.40 0.67 0.56

12" RIGID 12" RIGID

65%* 95%*

ECONOMIZER

FRESH AIR OPENINGS

MANUAL OR 0 - 100%

2-POSITION MODULATION

POWERED

EXHAUST

YORK INTERNATIONAL

Page 24

Electrical Data

ELECTRICAL SERVICE SIZING

In order to use the electrical service required for the cooling only Eco2 rooftop, use the appropriate calculations listed below from U.L. 1995. Based on the operating mode and configuration of the rooftop, the calculations will yield different MCA (minimum circuit ampacity), and MOP (maximum overcurrent protection).

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.

Load Definitions:

• LOAD1 is the current of the largest motor – compressor or fan motor.

• LOAD2 is the sum of the remaining motor currents that may run concurrently with LOAD1 (i.e., exhaust fan motor).

T ABLE 9 – COMPRESSORS

• LOAD3 is the current of the electric heaters – zero for cooling only units.

• 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 connection:

MCA = (1.25 x LOAD1) + LOAD2 + LOAD4 MOP = (2.25 x LOAD1) + LOAD2 + LOAD4

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.

COMPRESSOR NOMINAL VOLTAGE

QUANTITY

MODEL

50 4 SZ160 54.0 265.0 48.8 265.0 24.2 135.0 19.4 120.0 55 4 SZ160 54.0 265.0 48.8 265.0 24.2 135.0 19.4 120.0 60 4 SZ185 62.3 380.0 56.3 380.0 27.9 175.0 22.3 140.0 65 4 SZ185 62.3 380.0 56.3 380.0 27.9 175.0 22.3 140.0

* Values shown are per compressor

PER

UNIT RLA* LRA* RLA* LRA* RLA* LRA* RLA* LRA*

MODEL

208V 230V 460V 575V

YORK INTERNATIONAL

Page 25

T ABLE 10 – SUPPLY AND EXHAUST FAN MOTOR (ODP OR TEFC)

FORM 100.50-EG1

High Efficiency

NOMINAL VOLTAGE

MOTOR 208V 230V 460V 575V

HP FLA FLA FLA FLA

5.0 14.0 13.4 6.7 5.3

7.5 22.2 21.6 10.8 8.2

10.0 28.5 28.4 14.2 11.4

15.0 44.8 39.0 19.5 16.0

20.0 61.0 50.0 25.0 20.0

25.0 74.0 60.0 30.0 24.2

30.0 87.0 76.0 38.0 30.3

40.0 113.0 95.6 47.8 38.0

T ABLE 11 – CONDENSER FAN MOT ORS / EACH

NOMINAL VOLTAGE

NOMINAL 208V 230V 460V 575V

TONS FLA FLA FLA FLA

50 7.5 6.8 3.4 2.7 55 7.5 6.8 3.4 2.7 60 7.5 6.8 3.4 2.7 65 7.5 6.8 3.4 2.7

Premium Efficiency

NOMINAL VOLTAGE

MOTOR 208V 230V 460V 575V

HP FLA FLA FLA FLA

5.0 14.9 13.6 6.8 5.5

7.5 22.5 20.0 10.0 7.9

10.0 29.2 25.8 12.9 10.3

15.0 41.5 36.0 18.0 14.5

20.0 55.0 48.0 24.0 19.3

25.0 71.0 61.0 30.5 24.5

30.0 85.5 74.0 37.0 30.0

40.0 109.0 96.0 48.0 38.0

T ABLE 12 – CONTROLS AND CONVENIENCE

OUTLET

NOMINAL VOLTAGE

DESCRIPTION

Control Transformer 3.6 3.3 1.6 3.3 Convenience Outlet 9.6 8.7 4.3 3.5

208V 230V 460V 575V

AMPS AMPS AMPS AMPS

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Page 26

Controls

CONTROL SEQUENCES FOR ALL UNITS

GENERAL

The control system for the YORK eco top Unit is fully self-contained and based around an OptiLogic™ rooftop unit controller. To aid in unit setup, maintenance, and operation, the OptiLogic™ rooftop unit controller is equipped with a user interface that is based around a 4 line x 20 character backlit LCD display . The LCD displays plain language text in a menudriven format to facilitate use. In addition to the display , the OptiLogic™ user interface is also equipped with an LED indicator light, which will warn of any abnormal operation of the equipment or communication failures.

For the maximum in system flexibility, the YORK ECO Packaged Rooftop Unit can be operated by either a typical 7-wire thermostat (2 cool / 2 heat), a space temperature sensor, or stand-alone (V A V only). Note, a field wiring terminal block is provided to facilitate unit setup and installation.

In lieu of the hard-wired control options, the OptiLogic™ rooftop unit controller can be connected to and operated by a Building Automation System (BAS). If required, the OptiLogic™ rooftop unit controller can be equipped with an optional BACNet IP communication card, which allows communication, via Ethernet, to a BACNet IP based BAS.

Packaged Roof-

ECONOMIZER OPERA TION

The unit can be equipped with one of three types of optional economizers, dry bulb, single enthalpy , or comparative 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 controller shall stage up compressors, one at a time, to meet demand.

The control logic for the three types of economizers is as follows:

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 changeover inefficiencies due to the fact that this method is based on sensible temperatures only and does not take Outside Air moisture content into consideration.

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 between 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 a BAS command.

Note a unit operated from a space sensor can be equipped to temporarily override an unoccupied mode of operation. This Unoccupied Override feature is fully configurable via the OptiLogic™ user interface.

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 setting. This method of economizing allows the reference temperature setting to be set higher than the DB Economizer and is consequently a more efficient packaged rooftop economizer.

Comparative Enthalpy Economizer

With the optional comparative 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

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Page 27

FORM 100.50-EG1

less than the Return Air enthalpy and the Outside Air temperature 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.

VENTILA TION CONTROL SEQUENCES

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. The minimum position may be overridden more open by the unit controller when Outside Air conditions are suitable for economizing.

Minimum OA Damper Position (V AV Units)

With V ariable Air V olume units, there are two Minimum OA Damper 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.

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. The minimum position may be overridden more open by the unit controller when Outside Air conditions are suitable for economizing.

Air Measurement Stations

When the unit is equipped with an air measurement station, the unit controller shall control the Outside Air damper to a measured flow rate through the Air Measurement Station.

When the unit goes into the Occupied mode of operation, the unit controller shall control the Outside Air damper to maintain the Minimum AirFlow Setpoint through the Air Measurement Station. The unit controller shall control the Outside Air damper to this flow rate as long as the unit is in the Occupied mode. The Outside Air damper may be overridden more open by the unit controller when Outside Air conditions are suitable for economizing.

Demand Ventilation

If an optional CO2 sensor is connected to the unit, the unit controller can reset the minimum OA damper position(s) or minimum flow rate based on demand.

The unit controller shall monitor the CO2 level within the building. If the CO2 level rises above the CO2 setpoint, the controller will temporarily increase the Minimum OA Damper Position or Minimum OA flow rate to increase ventilation. If the CO2 level drops below the CO2 setpoint, the controller will decrease the Minimum OA Damper Position or Minimum OA flow rate to decrease ventilation.

Demand Ventilation shall remain active as long as the unit is in the Occupied mode of operation.

EXHAUST CONTROL SEQUENCES

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. This increase in building pressure forces the barometric relief damper open to allow exhaust air to escape. Because this type of exhaust system is not powered, it is limited to small amounts of exhaust.

Powered Fixed V olume Exhaust Based on Outside Air Damper Position

This optional fixed volume powered exhaust system consists of a fixed speed fan that is controlled ON and OFF based on the position of the Outside Air Damper. During operation, when the Outside Air Damper opens to a selected turn-on point, the Exhaust Fan is cycled ON. The fan remains on as long as the Outside Air damper is above a selected turn-off point. If the Outside Air Damper closes to the selected turn-off point, the Exhaust Fan is cycled OFF. The turn-on and turnoff points are user selectable from the OptiLogic™ User Interface panel.

Powered Fixed V olume Exhaust Based on Building Pressure

This optional fixed volume powered exhaust system consists of a fixed speed fan that is controlled ON and OFF based on the pressure inside the building. During

YORK INTERNATIONAL

Page 28

Controls

(continued)

operation, the pressure within the building in monitored by the OptiLogic™ controller. If the pressure rises to or above a selected turn-on pressure, the Exhaust Fan is cycled ON. The fan shall remain on as long as the pressure within the building remains above a selected turnoff pressure. If the building pressure falls to or below the selected turn-off pressure, the Exhaust Fan is cycled OFF. The turn-on and turn-off pressure setpoints are user selectable from the OptiLogic™ User Interface.

Powered Variable Volume Exhaust-Discharge Damper Controlled

This optional variable volume powered exhaust system consists of a fixed speed fan configured with a proportionally controlled discharge damper. The OptiLogic™ 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 proportionally controlled open and the Exhaust Fan is controlled ON. If the Building Pressure falls, the Exhaust Damper is proportionally controlled closed and the Exhaust 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 is user selectable from the OptiLogic™ User Interface.

For these applications, the unit can be equipped with optional Low Ambient controls. For optional Low Ambient operation, the OptiLogic™ controller monitors the refrigeration system discharge pressure and controls the speed of the condenser fans. If the discharge pressure falls, the speeds of the condenser fans are reduced to maintain acceptable condensing pressures in the refrigeration system. With the optional Low Ambient controls, mechanical cooling is allowed down to Outside Air temperatures of 0°F.

SMOKE PURGE SEQUENCES

General

As a convenience, for when buildings catch fire or the building is inundated with smoke or fumes from manufacturing processes, etc., the OptiLogic™ control system provides one of five ventilation override control sequences for building purge. The five selectable purge sequences are, Shutdown, Pressurization, Exhaust, Purge and Purge with duct pressure control. Note, when any of the purge sequences are activated, cooling and heating modes are disabled. A contact closure is provided which indexes the OptiLogic™ controller into the selected purge sequence.

Powered Variable Volume Exhaust-VFD Controlled

This optional variable volume powered exhaust system consist of an Exhaust Fan driven by a Variable Frequency Drive (VFD), which is controlled by the OptiLogic™ controller. The OptiLogic™ 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 OptiLogic™ User Interface.

LOW AMBIENT OPERATION

The OptiLogic™ controller continuously monitors the outside air temperature to determine if mechanical cooling 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 applications mechanical cooling is required when the Outside Air temperature is lower than the Low Ambient Lockout temperature.

Shutdown

When this purge sequence is selected and activated, the supply and exhaust fans are controlled OFF and the Outside Air damper is overridden closed. This idle state is maintained until the purge input is deactivated and the unit returns to normal operation.

Pressurization

When this purge sequence is selected and activated, the exhaust fan is controlled OFF and the Supply Fan is controlled ON. The Outside Air damper is opened full and the Return Air Damper is closed full. If the unit is a V A V unit, the V A V boxes are also driven full open to prevent duct over-pressurization. This mode is maintained until the smoke purge input is deactivated and the unit returns to normal operation.

Exhaust

When this purge sequence is selected and activated, the Supply Fan is controlled OFF and the Exhaust Fan is controlled ON (Exhaust Damper driven full open). This mode is maintained until the smoke purge input is deactivated and the unit returns to normal operation.

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Page 29

FORM 100.50-EG1

Purge

When this purge sequence is selected and activated, the Supply Fan is controlled ON and the Exhaust Fan is controlled ON. The Outside Air damper is opened full and the Return Air damper is closed full. If the unit is a V A V unit, the V A V boxes are also driven full open to prevent duct over-pressurization. This mode is maintained until the smoke purge input is deactivated and the unit returns to normal operation.

Purge With Duct Pressure Control (V AV Only)

When this purge sequence is selected and activated, the Supply Fan is cycled ON and controlled to maintain the duct static pressure setpoint. The Exhaust Fan is also controlled ON (Exhaust Damper driven full open) and the Outside Air Damper is driven full open. This mode is maintained until the smoke purge input is deactivated and the unit returns to normal operation.

V A V SPECIFIC SEQUENCES

Supply fan operation

For V A V units, the supply fan is controlled ON and OFF based on the occupancy state or the G input from a Thermostat (Unit must be configured for Thermostat operation to respond to the G input). When the unit goes into the Occupied mode of operation (or “G” is called) the Supply Fan will be controlled ON. The OptiLogic™ 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 V ariable 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.

When a Cooling Stage 1 call (“Y1”) is received, and the unit is equipped with an economizer, the OptiLogic™ controller will check the Outside Air conditions to determine if conditions are suitable for economizing and modulate the outside air damper and or stage up compressors as required to maintain the V AV High Supply Air Temperature Setpoint. This setpoint is user selectable at the OptiLogic™ User Interface. The OptiLogic™ controller will control to this setpoint as long as Cooling Stage 1 (“Y1”) remains active.

When a Cooling Stage 2 call (“Y2”) is received, and the unit is equipped with an economizer, the OptiLogic™ controller will check the Outside Air conditions to determine if conditions are suitable for economizing and modulate the outside air damper and or stage up compressors as required to maintain the VAV Low Supply Air Temperature Setpoint. This setpoint is user selectable at the OptiLogic™ User Interface. The OptiLogic™ controller will control to this setpoint as long as Cooling Stage 2 (“Y2”) remains active.

The VAV High SAT Setpoint is always greater than the V AV Low SA T Setpoint and because of this essentially makes this control sequence a Supply Air Temperature Reset algorithm based on Zone Temperature.

Zone Sensor Control

When a V A V unit is configured for Zone Sensor operation, the OptiLogic™ controller will monitor a reference Zone Temperature and command the Supply Fan to start when the unit goes into the Occupied mode.

If the zone temperature is above the VAV Setpoint for SA T Reset, the OptiLogic™ controller will modulate the outside air damper (Economizer available and conditions suitable) and/or stage compressors up and down, as required, to maintain the V AV High Supply Air Temperature Setpoint.

COOLING OPERA TION

Thermostat Control

When a VAV unit is configured for thermostat operation, the OptiLogic™ controller will command the Supply Fan to start when the unit goes into the Occupied mode or a thermostat “G” signal is received by the control. With no thermostat calls for cooling, the unit shall remain idle with the Supply Fan operating as required.

YORK INTERNATIONAL

If the zone temperature is below or falls below the VAV Setpoint for SAT Reset, the OptiLogic™ controller will modulate the Outside Air Damper (Economizer available and conditions suitable) and/or stage compressors up and down, as required, to maintain the VAV Low Supply Air Temperature Setpoint.

As with thermostat operation, this sequence is also a Supply Air T emperature Reset algorithm based on Zone Temperature.

Page 30

Controls

(continued)

Stand Alone Control

If the unit is not configured for Thermostat or Zone Sensor operation, the unit will operate in Stand Alone Mode.

In Stand Alone Mode, the OptiLogic™ Controller will monitor only the Occupied/Unoccupied state. When the unit is commanded into the Occupied Mode of operation, the OptiLogic™ Controller will start the Supply Fan. If the unit is equipped with an Economizer, the Controller will check to see if Outside Air conditions are suitable for Economizing. The controller will then use Outside Air (when available and suitable) and/or stage compressors up and down, as required, to maintain the V A V Low SA T Setpoint.

CV SPECIFIC SEQUENCES

Cooling Operation Thermostat Control

If a 7-wire thermostat (2 Cool/2Heat) 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” is called from the thermostat, the Supply Fan will start and all occupied functions (if equipped), i.e. ventilation, economizer, etc. will be allowed to operate.

Stage 1 (“Y1”) Call

If Y1 is called and the unit is equipped with an economizer, the control will check to see if the Outside Air is suitable for economizing. If conditions are suitable for economizing, the control will control the economizer and stage up compressors, as required, to maintain a high

SAT setpoint. If conditions are not suitable for economizing or not equipped with an economizer, the control will stage up 50% of the compressors. This shall be maintained until Stage 1 is deactivated or Stage 2 is called.

Stage 2 (“Y2”) Call

If Y2 is called and the unit is equipped with an economizer, the control will check to see if the Outside Air is suitable for economizing. If conditions are suitable for economizing, the control will control the economizer and stage up compressors, as required, to maintain a LOW SAT setpoint. If conditions are not suitable for economizing or not equipped with an economizer, the control will stage up 100% of the compressors. This shall be maintained until Stage 2 is deactivated.

Zone Sensor Control

If a zone sensor controls the unit, the OptiLogic™ controller shall maintain all zone temperature setpoints. These setpoints are user selectable at the OptiLogic™ User Interface.

When a zone sensor is used for control, the OptiLogic™ unit controller will monitor the temperature within the space and control the unit accordingly. A closed-loop staging algorithm is used to stage compressors up and down as required to maintain the desired zone temperature setpoint. If the unit is equipped with an economizer, Outside Air conditions are continuously monitored by the control to determine if conditions are suitable for economizing. If conditions are suitable for economizing, the OptiLogic™ controller will modulate the Outside Air damper in addition to staging compressors up and down to maintain the zone temperature setpoint.

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Page 31

Power Wiring

SINGLE-POINT POWER SUPPLY WIRING

FORM 100.50-EG1

Electrical / Controls Bo

ower Sid

ontrol Sid

Wiring Terminal Blo

LD06414

Line

Field Power

uppl

NOTES:

1. All field wiring must be provided through a field-supplied fused disconnect switch to the unit terminals (or optional molded disconnect switch).

2. All electrical wiring must be made in accordance with all N.E.C. and/or local code requirements.

3. Minimum Circuit Ampacity (MCA) is based on U.L. Standard 1995, Section 36.14 (N.E.C. Section 440.34).

4. Maximum Dual Element Fuse size is based on U.L. Standard 1995, Section 36.15 (N.E.C. Section 440.22)

5. Use copper conductors only.

6. On units with an optional disconnect switch, the supplied disconnect switch is a “Disconnecting Means” as defined in the N.E.C. Section 100, and is intended for isolating the unit from the available power supply to perform maintenance and troubleshooting. This disconnect switch is not intended to be a Load Break Device.

FIG. 2 – SINGLE-POINT POWER SUPPLY WIRING

Line Line

Earth

roun

YORK INTERNATIONAL

Page 32

Power Wiring

ded

ect

SINGLE-POINT POWER SUPPLY WIRING

WITH NON-FUSED DISCONNECT

(continued)

Electrical / Controls Bo

Power Sid

Mol Case Di

onn

witc

ontrol Sid

Wiring Terminal Blo

LD06415

Line

Field Power Suppl

NOTES:

1. All field wiring must be provided through a field-supplied fused disconnect switch to the unit terminals (or optional molded disconnect switch).

2. All electrical wiring must be made in accordance with all N.E.C. and/or local code requirements.

3. Minimum Circuit Ampacity (MCA) is based on U.L. Standard 1995, Section 36.14 (N.E.C. Section 440.34).

4. Maximum Dual Element Fuse size is based on U.L. Standard 1995, Section 36.15 (N.E.C. Section 440.22)

5. Use copper conductors only.

Line Line

Earth

roun

FIG. 3 – SINGLE-POINT POWER SUPPLY WIRING WITH NON-FUSED DISCONNECT

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Page 33

DUAL-POINT POWER SUPPLY WIRING

Electrical / Controls Bo

FORM 100.50-EG1

Field Power Supply #

Field Power Suppl

Line Line Line

Earth

roun

Line Line Line

Earth

roun

Power Sid

ontrol Sid

Wiring Terminal Blo

LD06416

NOTES:

1. All field wiring must be provided through a field-supplied fused disconnect switch to the unit terminals (or optional molded disconnect switch).

2. All electrical wiring must be made in accordance with all N.E.C. and/or local code requirements.

3. Minimum Circuit Ampacity (MCA) is based on U.L. Standard 1995, Section 36.14 (N.E.C. Section 440.34).

4. Maximum Dual Element Fuse size is based on U.L. Standard 1995, Section 36.15 (N.E.C. Section 440.22)

5. Use copper conductors only.

FIG. 4 – DUAL-POINT POWER SUPPLY WIRING

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Page 34

Field Control Wiring

Wiring Notes:

1. Wiring shown indicates typical wiring.

2. All wiring is Class 2, low voltage.

3. Maximum power available from the 24 VAC terminal is 40 VA.

4. Use shielded wire where shown.

R (24 VAC)

COM

SS+

SS-

SSA-

SSA+

IAQ+

IAQ-

R (24 VAC)

SMK

OCC

COM

7 Wire Thermostat

Y1 (Cool Stage 1)

Y2 (Cool Stage 2)

Space Sensor

1K Nickel

RTD Sensor

1.5K Adjust

Potentiometer

Sensor

0-5V Output

Note, 24VAC switch voltage must be sourced from the unit. Use of another power source external of the unit may cause equipment damage.

Occupied /

Unoccupied Input

Shutdown Input

Smoke Purge Input

COMMON

R (24VAC)

G (Fan)

Signal

Common

Signal

Common

Signal

Common

* Use Shielded Wire

Closed = Occupied Open = Unoccupied

Closed = Shutdown Open = Normal

Closed = Smoke Purge Open = Normal

31 2 4 5

86 7 910

SHIELD

11 12 14 15

1816 17 19 20 21

SHIELD

VAV Heat

24 VAC Signal

Relay Output

FIG. 5 – FIELD CONTROL WIRING

Common

Note: VAV Heat Relay output shall be used to command the VAV boxes to open full.

LD06158

YORK INTERNATIONAL

Page 35

YORK INTERNATIONAL

(

)

SIDE

aust

SECTIO

COU

G LUGS

(

)

344"

5-3/4"

35-3/4"

95-1/4"

53"

/8"

36-7/8"

92-3/16"

379-9/16"

6 3/8

6 5/8

5/8

(

)

TOP VIE

BOTTOM RETURN

BOTTOM SUPPLY

General Arrangement Drawing

PPLY OPENIN

" 1

-1

1-7

106-7/1

NTROL PANEL DETAIL

" 1

1 " 2-

RETURN OPENIN

FRON

EE = Economiz FE = Fan Exh

MB = Mixin

_F = Filter Segment

CC = Cooling Coil

FS = Supply Fa

DP = Discharge Plenu

P = Control Pane

" 1

N DESCRIPTION

= Condenser Sectio

FRONT VIE

16-1/1

24-5/1

SEE NOTE 6

140-3/4

FIG. 6 – GENERAL ARRANGEMENT DRAWING

7-3/1

NOTE

IDE VIE

LEFT SIDE

236-1/1

PLIN

DRAIN CONN

LEFT SIDE

1-9/1

FORM 100.50-EG1

1. 10' CLEARANCE MINIMAL OVER THE TOP OF THE CONDENSING UNIT

2. ONLY ONE ADJACENT WALL CAN EXCEED UNIT HEIGHT

3. 12' CLEARANCE REQUIRED TO ADJACENT UNITS

4. 8' SERVICE ACCESS RECOMMENDED ON ONE SIDE

5. ECONOMIZER AND EXHAUST HOODS, WHERE APPLICABLE, ARE FOLDE INSIDE UNIT FOR SHIPMENT

. DIM. IS TO OUTSIDE OF LIFTIN

LD06417

Page 36

SECTIO

aust

(

)

6 3/

6-1/2"

/8"

(

)

95-1/4"

53"

/8"

36-7/8"

3/8

NOTE

1. 10' CLEARANCE MINIMAL OVER THE TOP OF THE CONDENSING UNIT

2. ONLY ONE ADJACENT WALL CAN EXCEED UNIT HEIGHT

3. 12' CLEARANCE RE

4. 8' SERVICE ACCESS RECOMMENDED ON ONE SIDE.

5. ECONOMIZER AND EXHAUST HOODS, WHERE APPLICABLE, ARE FOLDE INSIDE UNIT FOR SHIPMENT

UIRED TO ADJACENT UNITS

TOP VIE

REAR RETURN

LEFT OR RIGHT SUPPLY

General Arrangement Drawing

YORK INTERNATIONAL

24-5/1

-1

NTROL PANEL DETAI

" 2-

FRONT VIE

16-1/1

SEE NOTE 6

140-3/4

1-7

N DESCRIPTION

EE = Economiz FE = Fan Exh MB = Mixing Bo _F = Filter Segmen CC = Cooling Coil

PPL

PENIN

" 1

RETUR

PENIN

-11

117-7/1

-1

28-1/2

IDE VIE

LEFT SIDE

" 1

-1

FS = Supply Fa DP = Discharge Plenu

= Condenser Sectio

P = Control Pane

79-1

(continued)

FIG. 7 – GENERAL ARRANGEMENT DRAWING

LD06418

Page 37

YORK INTERNATIONAL

5. CU

339"

87"

3/5"

53-3/4"

52"

35-3/4"

Curb Layout Drawing

237

71-

FIG. 8 – CURB LAYOUT DRAWING

NOTE

1. CURB, NAILER & GASKET ONLY, FURNISHED BY YORK. AL OTHER PARTS ARE FURNISHED AND INSTALLED "BY OTHERS"

2. ROOF CURB SHIPPED IN PIECES FOR FIELD ASSEMBLY

3. ROOF CURB MUST BE INSTALLED SQUARE AND LEVEL

4. CURB MATERIAL IS 14 GAUGE GALVANIZED, NOT PAINTED

RB INSULATED WITH 1.5"-3# INSULATION

LD06419

FORM 100.50-EG1

Page 38

Guide Specifications

GENERAL

Units shall be designed for outdoor rooftop installation on a roof curb. Units shall be rated according to ARI

360. Units shall be shipped in a single package, fully charged with HFC-407C refrigerant. The manufacturing facility shall be registered under ISO 9001 Quality Standards for Manufacturing. All units shall be completely factory assembled and run tested.

Units shall be ETL listed and be tested according to UL

1995. Tags and decals to aid in the service or indicate caution areas shall be provided. Installation, operation and maintenance manuals shall be supplied with each unit.

Units shall be capable of providing mechanical cooling down to 45° F (0°F with a low ambient kit). Unit shall be capable of starting and running at 120° F. Unit electric and gas connections shall be either through the curb or the side of the unit.

CONSTRUCTION

Base

The base rail shall be constructed of 12 gauge galvanized steel, extending the full perimeter of the unit. All components shall be supported from the base, and the base shall include integral lifting lugs. The unit base rail shall overhang the roof curb for water runoff and shall have a fabricated recess with a continuous flat surface to seat on the roof curb gasket, providing a positive, weather tight seal between the unit and the curb.

Casing

The unit cabinet shall be double wall construction to provide both maximum resistance to bacterial growth in the air stream and superior structural integrity. All sheet metal shall be G90 mill galvanized sheet metal, formed and reinforced to provide a rigid assembly . Cabinet shall be coated with baked on powder paint which, when subject to ASTM B117, 500 hour, 5% salt spray test, yields minimum ASTM 1654 rating of “6”. The unit shall be insulated with 1-1/2,” 1 pound fiberglass insulation between the two sheet metal skins. Insulation shall meet NFPA-90A regulations for smoke and flame spread ratings. Single-wall units, or foil-faced insulation in the air stream shall be not acceptable.

The cabinet corner post and the intermediate side supports shall be a minimum of 16-gauge steel. All access

doors shall be a minimum of 18 gauge on the exterior surfaces, and 20 gauge on the interior. Interior floor panels shall be 18 gauge.

All serviceable sections shall have hinged access doors with latches on both sides of the unit. All access doors shall be constructed of 20-gauge steel on the outside, with 24 gauge on the inside. Each door shall seal against PVC gaskets to prevent air and water leakage.

The roof shall be double wall, with 18 gauge on the external surface and 24 gauge on the interior. The roof shall be formed with a 45 degree “drip lip” overhanging the side walls to prevent precipitation drainage from streaming down the side of the unit. Roof sections shall be connected together via integral channels fastened with screws and sealed with gasketing. Each fastened seam shall be further protected by a sheet metal channel covering the full length of the gasket surface, making a completely water tight seal.

SUPPLY AIR SYSTEM

Supply Air Fan

Fans shall be centrifugal type, statically and dynamically balanced in the factory. Fan wheels shall be designed for continuous operation at the maximum rate of fan speed and motor HP . Fans shall be double-width, double-inlet with forward curved blades.

The fan and motor assembly shall be mounted on a common base to allow consistent belt tension with no relative motion between the fan and motor shafts. The entire assembly shall be isolated from the unit base with 1" deflection springs. The fan discharge shall be connected to the cabinet through a reinforced neoprene flexible connection to eliminate vibration transmission from the fan to the unit casing.

BEARINGS AND DRIVES

Bearings shall be self-aligning pillow-block re-greasable ball bearings with an average life expectancy L10 of 40,000 hours. Grease fittings shall be accessible through access doors.

Fan motors shall be NEMA designed, Standard efficiency ball bearing type with electrical characteristics and horsepower as specified. Motors shall be 1750 RPM, open drip proof type. The motor shall be located within the unit on an adjustable, heavy steel base.

YORK INTERNATIONAL

Page 39

FORM 100.50-EG1

All fan motor drives shall be selected for a minimum service factor of 1.2 and have fixed pitched sheaves.

AIR FILTERING SYSTEM

All filter holding frames shall be of heavy-duty construction designed for industrial applications. All filters shall be either side accessible via access doors on both sides of the filter section.

All filter media shall be Class II listed under UL Standard 900. Filter efficiencies shall be rated in accordance with ASHRAE Standard 52-76

Two-inch throwaway filters in an angled filter rack shall be standard. On units with rigid filters, two-inch prefilters shall be installed upstream of the rigid filters.

AIR INLET SYSTEM

General

A factory installed outside air rain hood permanently attached to the cabinet to prevent windblown precipitation from entering the unit shall cover inlet openings. The rain hoods on the sides of the unit shall be rotated into the cabinet and secured for shipment so that upon installation they need only be rotated upwards and screwed into place. The outside air hood shall contain a removable and cleanable filter.

All damper assemblies shall be of low leak design. Damper blades shall be fabricated from a minimum of 16 gauge galvanized steel.

densate drain opening shall be flush with the bottom of the drain pan to allow complete drainage. Coils in excess of 48” high shall have an intermediate drain pan, extending the entire width of the coil to provide better water drainage.

Compressors

Compressors shall be hermetic, scroll-type, including tip seals to provide efficient axial sealing while preventing scroll tip to base contact, controlled orbit design for radial sealing to incorporate minimum flank-to-flank contact for long service life, refrigerant cooled motors, large suction side free volume and oil sump to provide liquid handling capability , annular discharge check valve and reverse vent assembly to provide low pressure drop, silent shutdown and reverse rotation protection, initial oil charge, oil level sight glass, vibration isolator mounts for compressors, and brazed-type connections for fully hermetic refrigerant circuits.

Condenser Coils

Condenser coils shall have 3/8” seamless copper tubes, arranged in staggered rows, mechanically expanded into aluminum fins. Coils shall be protected from hail damage with a “V” configuration, with individual flat coils rotated from the vertical plane for each condensing circuit.

Condenser Fans and Motors

Condenser fans shall be direct drive, propeller type, discharging vertically. Condenser fan motors shall be 3-phase, totally enclosed air over (TEAO). Thermal overload protection shall be provided for each condenser fan motor.

REFRIGERA TION SYSTEM

Units shall have four compressors for maximum loadmatching capability. Each refrigerant circuit shall be controlled with a thermal expansion valve for maximum control at low load conditions.

Evaporator Coils

Evaporator coils shall be direct expansion. Coil tubes shall be 3/8” OD copper, with internally enhanced tubes. Fins shall be enhanced aluminum mechanically expanded to bond with the copper tubes. Coil casing shall be fabricated from heavy gauge galvanized steel.

A stainless steel double-sloped drain pan shall be provided under the entire width of the evaporator coil, including all return bends. The main drain pan shall be sloped a total of 1/4” per foot towards the drainage point according to ASHRAE 62 guidelines. Main drain pan shall be accessible and cleanable in the field. The con-

YORK INTERNATIONAL

Refrigerant Piping

All interconnecting piping between refrigeration components shall be copper tubing with brazed joints.

Each refrigerant circuit shall be equipped with liquid line filter drier, and moisture indicating sight glass. Each circuit shall also have both high and low pressure switches installed on either side of the compressor and include access fittings for replacement of the pressure switches without removing charge.

Polyurethane sleeves shall protect all small diameter distributor tubing to the evaporator coil to prevent the tubes from copper-to-copper contact during shipment or operation.

POWER SUPPL Y

Unit power supply shall be 460V 3-phase 60Hz (208, 230 and 575V optional) single-point power connections with terminal block connections.

Page 40

Guide Specifications

(continued)

CONTROLS

A factory-mounted unit controller with a 4x20 character alphanumeric display and user keypad shall be included as standard. The controller and keypad shall be housed inside the low-voltage compartment of the control/power panel. On units with supply or exhaust VFDs, the VFD keypads shall be located inside the same panel as the unit controller and interface keypad. Control operating data, setpoints, unit setup, configuration, service and history shall all be accessible via a single key. A system alarm LED shall indicate failures to the operator with more detail provide in the menu screens. The user interface shall function with a simple menu-driven display for easy access to unit data with integral time clock for weekly and holiday scheduling. The unit keypad shall include password protection to prevent unauthorized access and tampering with unit setpoints and configuration.

A single terminal strip shall be provided for all thermostat and customer hard-wired field connections.

Unit controls shall be completely factory packaged and compatible with a room thermostat. Constant volume units shall operate with a two (2) cool/two (2) heat thermostat. Staging decisions shall be based upon the deviation of space temperature from set point and the rate of change of the space temperature.

ACCESSORIES AND OPTIONS

Full perimeter and partial perimeter roof curbs - 14”

high roof curb with wood nailer. Roof curb covers the entire perimeter of the unit (full curb) or that portion of the unit that has airflow (partial curb).

Supply Fan VFD Manual Bypass – provides full air- flow in the event of a VFD failure.

Power Supply Connections – single-point power with manual disconnect, and dual-point power wiring options are available for various applications.

Supply air setpoint reset by outside air or space air temperature - Allows VAV supply air setpoint to float

upward (saving energy) if the outdoor air temperature or the space temperature is sufficiently low .

Supply Fan Isolation – the entire supply fan assem- bly shall be isolated from the unit base with 2" deflection springs.

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).

V AV units shall operate with a sensor in the supply air stream for cooling operation. Staging decisions shall be based upon the deviation of supply air temperature from set point and the rate of change of the supply air temperature.

Controllers shall have the following safeties (both VAV and CV):

• High and low pressure cut-outs (one each refrigerant circuit)

• Minimum on time for compressors

• Delay between compressor stages

• Anti-short cycle delays (minimum off time) for com-

pressors and supply fan

• Cooling lockout at 40° F; 0° F if equipped for low ambient operation

• Air flow proving switch requiring proper air flow for cooling operation

Low Ambient Operation – a low ambient kit is avail- able to control compressor head pressure via VFD condenser fan speed control. Head pressure control is accomplished by monitoring head pressure with suction and discharge line pressure transducers rather than less accurate temperature control.

ECONOMIZERS

Manual Damper Economizer – economizer is avail-

able with a manual damper adjustable between 0-25 percent.

Two-Position Damper Economizer – economizer is available with a two-position damper with the open position adjustable between 0-25 percent. The operation of the two-position economizer shall be based on occupancy; occupied is open, unoccupied is closed.

YORK INTERNATIONAL

Page 41

FORM 100.50-EG1

Modulating Damper Economizer – economizer is available with a modulating damper arrangements. Modulating damper economizers shall have outdoor air and return air dampers that are interlocked and positioned by fully modulating, solid state damper actuators. The actuators shall be spring loaded so that the outside air damper will close when power to the unit is interrupted. The operation of the modulating economizer shall be fully integrated into the cooling control system. The modulating economizer control shall be via a dry bulb sensor, single or dual enthalpy sensors.

Airflow Measurement – airflow measurement is avail- able for the Modulating Damper Economizer option listed above. Three options exist for airflow measurement; minimum airflow and 100% air flow. Minimum airflow measures airflow between 0 and the minimum ventilation airflow up to 25% outside air. 100% airflow measurement measures air flow from 0-100% of the outside airflow.

RELIEF SYSTEM Barometric Relief - building air exhaust shall be ac-

complished through barometric relief dampers installed in the return air plenum. The dampers will open relative to the building pressure.

Exhaust Air Fans - two (2) forward curved centrifugal fans shall be installed in the return air plenum for positive power exhaust. Fan impellers shall be on a common shaft, driven by a single motor. The fans, motors and drives shall be of the same quality and design as specified for the supply air fan, except the fans shall be Class I. Exhaust control options are on/off, modulating discharge damper, or VFD fan speed control. On units with non-modulating exhaust a barometric relief damper is included to prevent outside air from entering in the off cycle. Fans shall cycle on and off with building pressure. On units with modulating exhaust and two position control based on building pressure, a field-installed static pressure sensor mounted in the conditioned space or return air duct is required for damper and VFD modulation.

EV APORATOR COIL PROTECTION Copper Fins – provided in lieu of aluminum fins. Pre-Coated Fins – an epoxy-coated aluminum fin stock

to guard from corrosive agents and insulate against galvanic potential. Used for mild seashore or industrial locations.

CONDENSER COIL PROTECTION

Copper Fins – provided in lieu of aluminum fins.

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

to guard from corrosive agents and insulate against galvanic potential. Used for mild seashore or industrial locations.

Post-Coated Fins – Technicoat coil-coating process used on condenser coils for seashore and other corrosive applications (with the exception of strong alkalis, oxidizers, wet bromide, chlorine and fluorine in concentrations greater than 100ppm).

Hot Gas Bypass (Optional on Constant Volume; Standard on V A V) – permits continuous, stable opera-

tion at capacities below the minimum step of unloading by introducing an artificial load on the evaporator.

BACNet Communications Card – for BAS commu- nications, a BACNet card is available with Ethernet connection.

Compressor Sound Blankets – compressor acoustic sound blankets for sound sensitive applications.

Sensors – carbon dioxide sensors for occupied

space that operate demand ventilation control opening outside air dampers to ventilate building.

Suction and Discharge Pressure Transducers – moni- tor and readout of suction and discharge pressures.

YORK INTERNATIONAL

Page 42

NOTES

YORK INTERNATIONAL

Page 43

NOTES

FORM 100.50-EG1

YORK INTERNATIONAL

Page 44

Proud Sponsor of the 2002 U.S. Olympic Team

36USC380

Form 100.50-EG1 (201) New Release

Tele. 800-861-1001

www.york.com

York R-407C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FORM 100.50-EG1 (201)

TABLE OF CONTENTS

NOMENCLATURE

Introduction

FIG. 1 – PACKAGED ROOFTOP AIR CONDITIONING UNIT

FEATURES/BENEFITS

Physical Data

T ABLE 1 – PHYSICAL DATA

Application Data

LOCATION

ECONOMIZER

V AV SUPPLY AIR PRESSURE CONTROL

RIGGING

HARSH ENVIRONMENTS – CONDENSER AND EV APORATOR COIL PROTECTION

BUILDING EXHAUST SYSTEMS

ROOF CURB

ACOUSTICAL CONSIDERA TIONS

SELECTION PROCEDURE

T ABLE 2 – COOLING PERFORMANCE DATA – 50 TON MODEL

T ABLE 3 – COOLING PERFORMANCE DATA – 55 TON MODEL

T ABLE 4 – COOLING PERFORMANCE DATA – 60 TON MODEL

T ABLE 5 – COOLING PERFORMANCE DATA – 65 TON MODEL

Fan Performance

T ABLE 6 – 50 THROUGH 65 TON SUPPLY FAN DATA

TABLE 7 – 50 THROUGH 65 TON EXHAUST FAN DATA

T ABLE 8 – COMPONENT STATIC PRESSURE DROPS (INCHES OF WATER COLUMN)

Electrical Data

ELECTRICAL SERVICE SIZING

T ABLE 9 – COMPRESSORS

T ABLE 10 – SUPPLY AND EXHAUST FAN MOTOR (ODP OR TEFC)

T ABLE 11 – CONDENSER FAN MOT ORS / EACH

Controls

CONTROL SEQUENCES FOR ALL UNITS

GENERAL

ECONOMIZER OPERA TION

UNOCCUPIED / OCCUPIED SWITCHING

VENTILA TION CONTROL SEQUENCES

EXHAUST CONTROL SEQUENCES

SMOKE PURGE SEQUENCES

LOW AMBIENT OPERATION

V A V SPECIFIC SEQUENCES

COOLING OPERA TION

CV SPECIFIC SEQUENCES

Power Wiring

SINGLE-POINT POWER SUPPLY WIRING

FIG. 2 – SINGLE-POINT POWER SUPPLY WIRING

FIG. 3 – SINGLE-POINT POWER SUPPLY WIRING WITH NON-FUSED DISCONNECT

DUAL-POINT POWER SUPPLY WIRING

FIG. 4 – DUAL-POINT POWER SUPPLY WIRING

Field Control Wiring

FIG. 5 – FIELD CONTROL WIRING

General Arrangement Drawing

FIG. 6 – GENERAL ARRANGEMENT DRAWING

FIG. 7 – GENERAL ARRANGEMENT DRAWING

Curb Layout Drawing

FIG. 8 – CURB LAYOUT DRAWING

Guide Specifications

GENERAL

CONSTRUCTION

SUPPLY AIR SYSTEM

BEARINGS AND DRIVES

AIR FILTERING SYSTEM

AIR INLET SYSTEM

REFRIGERA TION SYSTEM

POWER SUPPL Y

CONTROLS

ACCESSORIES AND OPTIONS

ECONOMIZERS

CONDENSER COIL PROTECTION