CEILAiR. Engineering Manual. Precision Air Conditioning 1 to 10 Tons (60 Hz Data) Ceiling Mounted Full line of DX & CW Systems

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CEILAiR

®

Air Technology Systems, Inc.

Ceiling Mounted

Full line of DX & CW Systems

Precision Air Conditioning

1 to 10 Tons

(60 Hz Data)

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Air Technology Systems, Inc.

COMFORT

■ Conference Rooms

■ General Office Spaces

■ Modular Offices

CRITICAL / PRECISION

■ Telecommunications Rooms

■ Telephone Switch-Gear Rooms

■ Computer / LAN Rooms

■ Copier / Fax Rooms

■ ATM Bank Centers

■ Elevator Equipment Rooms

■ CAT SCAN / MRI Facilities

■ Hospital Operating & Isolation Rooms

■ Clean Rooms

■ Laboratories

PERFECT FOR TENANT RENOVATIONS!

Stulz Air Technology Systems, Inc.

SATS is dedicated to providing innovative solu-tions for critical temperature and humidity control needs. SATS designs and manufactures specialized environmental control equipment for commercial, industrial and custom military applications. SATS serves a diverse marketplace - including telecom-munications, information technology, medical, financial, educational, industrial process and gov-ernment contracts - utilizing world-class “island” manufacturing processes in a modern, 150,000 ft2

facility. The addition of SATS to the STULZ family of companies solidifies STULZ as a global leader in the precision air conditioning marketplace. SATS combines a global network of sales and service companies with an extensive factory engineering staff and highly flexible manufacturing resources dedicated to providing world-class quality, innova-tion and customer service.

ISO-9001:2001Quality Registered

Stulz-ATS is committed to satisfying customer expectations by meeting and exceeding require-ments. Our Quality Policy ensures that every Employee is committed to Customer Satisfaction, Teamwork and utilizing Continuous Process Im-provement methods in order to deliver an excep-tional product. We will continually measure our performance to improve the effectiveness of our quality management system

Precision A/C Applications

Stulz-ATS is dedicated to the manufacturing of supplemental and precision air conditioning prod-ucts. With an extensive installation base, SATS has earned a solid reputation as a quality supplier and leader in its field.

CeilAiR

ceiling mounted air conditioning units

provide temperature and/or humidity control for those hot spot areas in

the building which exceed the central system capacity. They are an economical solu-tion to such demands which may, in fact, be temporary until the next offices are carved out of an existing plant area, another laboratory added to a school or new medical

equipment installed at a hospital. No floor space is required by the CeilAiR ceiling mounted units. The units are designed with a wide range of options to handle both comfort and precision cooling applica-tions. Typical applications include:

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SECTION - 5

ELECTRICAL DATA: (FLA / MCA / MFS)

Electrical Data Index ... 5-1

DX - Compressorized Systems:

Air Cooled, Self-Contained Systems ... 5-2 Air Cooled, Split Systems ... 5-2/4 Water Cooled Systems... 5-2/4 Glycol Cooled Systems ... 5-2/4

DX - Air Handling & Remote Condensing Units:

DX - Air Handling Units ... 5-5/6

Free-Cooling & Alternate Water Source:

DX with Free-Cooling ... 5-7/8 DX with Alternate Water Source ... 5-7/8

Chilled Water Air Handling Systems:

Chilled Water Systems ... 5-9

SECTION - 6

DIMENSIONAL / INSTALLATION DRAWINGS:

Dimensional Drawing "Quick Find" Index ... 6-1 Physical Data - Unit Weights (lbs) ... 6-2 Connection Sizes - DX Refrigerant ... 6-3 Air Cooled Systems ... 6-4/9 Water / Glycol Cooled Systems ... 6-10/13 Chilled Water Systems ... 6-14/15

SECTION - 1

Introduction to Stulz-ATS ... 1-1 Table of Contents ... 1-2

SECTION - 2

CeilAiR SYSTEMS: Outstanding Advantages ... 2-1 User Oriented Features & Options ... 2-2 Available Configurations ... 2-3/4

MODEL NOMENCLATURE:

Nomenclature Chart ... 2-5 Model Nomenclature Specifications ... 2-6

SECTION - 3

GUIDE SPECIFICATIONS:

Standard Features Index ... 3-1 Standard Guide Specifications ... 3-2/4 Optional Features Index ... 3-5 Optional Features Guide Specifications ... 3-6/14

SECTION - 4

PERFORMANCE / CAPACITY SPECIFICATIONS:

Performance Data Index ... 4-1 DX - Air Cooled Systems ... 4-2/6 DX - Water Cooled Systems ... 4-7/8 DX - Glycol Cooled Systems ... 4-9/10 Chilled Water Systems ... 4-11/16 Free-Cooling & Alternate Water Source Systems ... 4-17/28

Table of Contents

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Air Technology Systems, Inc.

CeilAiR

Systems

CeilAiR

ceiling A/C's are designed as the

ultimate space saver. They easily mount in a

standard 2' x 4' grid of a dropped ceiling

ple-num and are available with high static

blow-ers (up to 2.0" e.s.p. available) for connection

to ceiling plenum ducts.

CeilAiR

units are

es-pecially useful where there is no floor or wall

space available for cooling units or where

aesthetics demand out-of-sight installation.

{

CeilAiR

Systems Offer Outstanding Advantages

Flexibility

A wide variety of types are available to meet your unique requirements.

• DX - Air Cooled • DX - Water Cooled

• DX - Glycol Cooled (w/ Remote Drycoolers &

Pump Packages

• DX - Air Handling Units

• Chilled Water Air Handling Units

Versatility

• Spot Cooling & Ducted systems • Self-Contained & Split systems

Space Saving Design

Compact, in-the-ceiling design saves valuable floor space.

Wide Size Range

1 to 10 tons capacity in eleven incremental sizes meets any supplemental cooling requirement.

Non-Proprietary Parts

All CeilAiR systems incorporate non-proprietary compo-nents where possible. Most major HVAC, refrigeration and electrical distributors stock an exact model cross reference or an alternate to most factory provided components.

Microprocessor Controls

Precision temperature and/or humidity control with unri-valed, user-friendly controls, offer a wide range of func-tions and alarms.

A-Tech-1.1/.2 C-Tech-10 A-Tech-20

Complete Temperature & Humidity

Control

• Steam Canister Humidification (Optional) • Dehumidification Mode (Optional) with - Electric Reheat/Heat

- Hot Gas Reheat (Energy $aver) - Hot Water & Steam Reheat/Heat

Capacity Modulation Options

• Single & Dual Compressor Systems • Hot Gas Bypass Systems

• Multistage Reheat/Heat

Code Conformance

Listing E112043

R

NRTLLISTED Complies With CSA C22.2 No. 236�

Heating & Cooling Equipment

UL 1995 C

- NYC MEA Approved (MEA-163-88-E) - Chicago Code Approved

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User Oriented Features & Options

Scroll Compressors

CeilAiR DX air conditioners incorpo-rate Scroll Compressor Technology (unless specified otherwise). Scroll Compressors provide higher ef-ficiency, higher reliability and lower sound power than other compressor technologies.

Year Round Operation

Option offerings available with

Ceil-AiR air conditioners allow for year-round, 24/7 continuous on-line system operation in any environment in the world:

Low Ambient Control (DX - Air Cooled)

• 0°F Fan Cycling / Fan Speed • -20°F Variable Fan Speed • -30°F Flooded Head Pressure

Quiet Operation

Low sound power Scroll compressors coupled with low RPM blowers, acoustically lined cabinets and low velocity grilles provide the optimum in quiet operation.

Fast Delivery

Stock units complete and ready for shipment • "Rapid-Fire", 5 day Ship Program

Warranty

- 2 Year Parts Standard - Optional 5 Year Compressor

Spot Cooler

Ducted

Other Available Options

- Condensate Pumps - Electrical Service Switches - Firestats

- Smoke Detectors - Water Leak Detectors

- Special High Efficiency Filtration (2" & 4" Filters up-to 60% Dust Spot) - High Pressure DX - Water/Glycol Cooled Condenser Regulating Valves

- Free-Cooling & Alternate Water Source Units

- Many more options available (see page 3-5)!

Variety of Air Patterns

CeilAiR Ceiling AC Systems

(Model OHS-( )-AS Shown)

Selected Standard Features:

Acoustical / Thermal Insulation

Aluminum Fin / Copper Tube Coils

Thermal Expansion Valve

Refrigerant Sight Glass

Filter / Drier Strainer

Liquid Refrigerant Reclaim Valves

Insulated SS or Polymer Drain Pans

Condensate Overflow Safety Switch

High / Low Pressure Switches

Light weight ALL ALUMINUM cabinet and chassis prevents rust & corrosion

Straight-Thru EVAPORATOR AIR OUT EVAPORATOR AIR IN EVAPORATOR AIR OUT EVAPORATOR AIR IN 90° / Right-Angle EVAPORATOR AIR IN EVAPORATOR AIR OUT

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Air Technology Systems, Inc.

Space Saving Configuration Choices

OHS-012/040-AS

(Self-Contained, Ducted Evaporator)

OHS-012/040-AS

(Self-Contained, "Ductless" Spot Cooler)

SELF-CONTAINED AIR COOLED - with INTEGRAL Air Cooled Condenser

AIR COOLED SYSTEMS

{

{

OHS-012/040-AR

(Split Evaporator, "Ductless" Spot Cooler)

{

{

{

{ {

{

SATS Remote Outdoor Propeller Condenser

SATS Remote Indoor Centrifugal Condenser

SPLIT AIR COOLED - with REMOTE OUTDOOR or INDOOR Air Cooled Condenser

(compressor located with Evaporator Section) SATS Remote Outdoor

Propeller Condenser

SATS Remote Indoor Centrifugal Condenser

SATS Remote Outdoor Propeller Condenser

SATS Remote Indoor Centrifugal Condenser

OHS-012/032-AR

(Split Evaporator, Ducted Evaporator)

SATS Remote Outdoor Propeller Condenser

OHS-012/040-HAR & OHS-048/060-AR

(Single Compressor - Split Evaporator) (Ducted Only)

SATS Remote Indoor Centrifugal Condenser

OHS-040/120-(D)AR

(Dual Compressors - Split Evaporator) (Ducted Only)

OHS-012/040-AHU

(Split , DX - Air Handling Unit) ("Ductless" Spot Cooler)

SATS Outdoor Propeller Remote Condensing Unit

SATS Indoor Centrifugal Remote Condensing Unit

SPLIT AIR COOLED - AIR HANDLING UNIT w/ INDOOR or OUTDOOR REMOTE CONDENSING UNIT (compressor located with Condensing Section)

OHS-012/040-AHU & HAHU

(Split , DX - Air Handling Unit) (Ducted Evaporator)

SATS Indoor Centrifugal Remote Condensing Unit SATS Outdoor Propeller Remote Condensing Unit

SATS Outdoor Propeller Remote Condensing Unit

OHS-048/120-DAHU

(Dual Circuit, Split, DX - Air Handling Unit) (Ducted Only)

OHS-048/060-AHU

(Split , DX - Air Handling Unit) (Ducted Only)

SATS Indoor Centrifugal Remote Condensing Unit SATS Indoor Centrifugal Remote Condensing Unit SATS Outdoor Propeller Remote Condensing Unit

Please refer to the SATS Heat Rejection Engineering Manual for

specification and per-formance data on SATS

Remote Condensers & Condensing Units

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More Space Saving Configuration Choices

WATER COOLED SYSTEMS

SELF-CONTAINED WATER COOLED SYSTEMS

OHS-012/040-W

(Self-Contained, "Ductless" Spot Cooler) (Self-Contained, Ducted Evaporator)OHS-012/032-W

GLYCOL COOLED SYSTEMS

SELF-CONTAINED GLYCOL COOLED SYSTEMS

CHILLED WATER SYSTEMS

OHS-048/120-DW

(Dual Compressors, Self-Contained, Ducted Only)

OHS-012/040-HW & OHS-048/060-W

(Single Compressor, Self-Contained, Ducted Only)

OHS-012/040-G with SATS DRYCOOLER & PUMP PACKAGE

(Self-Contained, "Ductless" Spot Cooler with Outdoor Propeller Drycooler & Pump Package)

OHS-012/040-HG &

OHS-048/060-G with SATS DRYCOOLER & PUMP PACKAGE

(Single Compressor, Self-Contained, Ducted Only with Outdoor Propeller Drycooler & Pump Package)

OHS-048/120-DG with SATS DRYCOOLER & PUMP PACKAGE

(Dual Compressors, Self-Contained, Ducted Only with Outdoor Propeller Drycooler & Pump Package)

OHS-012/040-G with SATS DRYCOOLER & PUMP PACKAGE

(Self-Contained, Ducted Evaporator with Outdoor Propeller Drycooler & Pump Package)

Remote Water Source

(supplied by others)

OHS-012/040-C

(Self-Contained Air Handler) ("Ductless" Spot Cooler Evaporator)

OHS-012/040-C

(Self-Contained Air Handler) (Ducted Evaporator)

Remote Liquid Chiller

(supplied by others)

OHS-048/120-C

(Self-Contained Air Handler) (Ducted Only)

Remote Water Source

(supplied by others)

Remote Water Source

(supplied by others)

Remote Water Source

(supplied by others)

Remote Liquid Chiller

(supplied by others)

Remote Liquid Chiller

(supplied by others)

Please refer to the SATS Glycol Systems

Engi-neering Manual for specification and performance data on SATS Glycol Pump

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Air Technology Systems, Inc.

Nomenclatur

e

- CeilAiR

®

Systems

Model Nomenclature

-

"

OHS" Systems

OHS = OverHead System

COS = CyberONE System MCS = Modular Cyber System VFS = Vertical Floor System FCS = Floor Console System SCS = STULZ Condensing Section* GPS = Glycol Pump System*

Nominal Capacity in 1,000's of BTU/H

AHU = Air Handling Unit

AR = Remote (Split) Air Cooled

AS = Self-Contained Air Cooled

C = Chilled Water System

CAA = Indoor Centrifugal Condenser*

D( ) = Dual (Two) Circuit System

G = Glycol Cooled

H( ) = Horizontal Discharge, "H- Series" Configuration (e.g.: HAHU, HAR, HW, HG, & HC)

( )AA = Outdoor Prop Fan Condenser for 0° F*

( )SA = Outdoor Prop Fan Condenser for -20° F*

( )AA = Outdoor Prop Fan Condenser for -30° F*

EC = Outdoor Prop Fan Condenser for -20° F*

w/ EC Fans

RCU-I = Indoor Centrifugal Remote Condensing Unit*

RCU-O = Outdoor Remote Condensing Unit*

W = Water Cooled

AWS = "Alternate Water Source"

FC = "Free-Cooling"

LP = "Low Profile Configuration" OA = "Outside Air"*

SF = "Same-Face" Air Pattern SP = "Special Configuration"

OHS-040-G-FC

CeilAiR

®

- Ceiling Mounted A/C's

* SATS Condensers & Condensing Units

can be found in our

"Heat Rejection"

engineering manual.

* SATS OHS Oustide Air Units can be

found in our

"CeilAiR

®

Outide Air"

engineering manual.

* SATS Pump Packages and Drycoolers can

be found in our

"Glycol Systems"

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Nomenclatur

e

- CeilAiR

®

Systems

Model Nomenclature Specifications

"

CeilAiR

"

Model Nomenclature

Guide Specifications

AIR COOLED SELF-CONTAINED

Integral Self-Contained

(Models OHS-012/040-AS) The system shall be a self-con-tained, ceiling mounted supple-mental air conditioner with factory mounted integral air cooled condenser with centrifugal blower.

The condenser shall be sized to provide the total heat of rejection of the system at a 95°F DB ambi-ent temperature.

The system shall require only single point supply power con-nection and the system shall ship from the SATS factory with a full operating refrigerant charge.

DX - EVAPORATOR SECTIONS

Air Cooled Remote Evaporator (Models OHS-( )-()AR)

The system shall be a remote (split) air cooled, ceiling mounted supplemental air conditioner evaporator. The evaporator sec-tion shall house, as a minimum, the evaporator coil, expansion valve, compressor, evaporator blower/motor and associated electrical and refrigeration compo-nents.

The OHS-( )-()AR evaporator section shall be located at some distance from its correspond-ing CeilAiR model HES-( )-()CAA indoor or WCS-( ) outdoor air cooled condenser.

The evaporator system shall require only single point main power supply connection and the ystem shall ship from the SATS factory with a dry nitrogen hold-ing charge ready for field refriger-ant (R-22) charging.

(Note: SATS Condensers & Condensing Units can be found in our "Heat Rejec-tion" engineering manual.)

DX - WATER COOLED SYSTEMS

Integral Self-Contained

(Models OHS-( )-W / DW)

The system shall be a self-con-tained, ceiling mounted supple-mental air conditioner to include integral water cooled, coaxial condenser with factory installed head pressure water regulat-ing control valve(s). Condenser (source) water shall be provided by a cooling tower or some other remote water source.

The system shall require only single point supply power con-nection and shall ship from the SATS factory with a full operating refrigerant charge.

Water Regulating Valves:

Head pressure shall be auto-matically controlled by a factory installed 2-way water regulating valve rated for 150 psig w.w.p.

(Note: 3-way and high pressure 300 to 400 psig rated valves are available as op-tions, page 3-9.)

DX - GLYCOL COOLED SYSTEMS

Integral Self-Contained

(Models OHS-( )-G / DG)

The system shall be a self-con-tained, ceiling mounted

supple-mental air conditioner to include integral glycol cooled, coaxial con-denser with factory installed head pressure glycol regulating control valve(s). Condenser (source) gly-col solution shall be provided via a CeilAiR model GPS-( )-( ) / HES-( )-LGA remote glycol pump pack-age and drycooler system. The system shall require only single point supply power con-nection and shall ship from the SATS factory with a full operating refrigerant charge.

Glycol Regulating Valves:

Head pressure shall be auto-matically controlled by a factory installed 2-way glycol regulating valve rated for 150 psig w.w.p.

(Note: 3-way and high pressure 300 to 450 psig rated valves are available as op-tions, page 3-9.)

CHILLED WATER AIR HANDLERS

CHILLED WATER SYSTEM (Models OHS-( )-C)

The system shall be a ceiling mounted chilled water supple-mental air conditioner to in-clude chilled water cooling coil, evaporator blower and motor and chilled water control valve. Chilled water shall be provided by a remote liquid chiller system.

Chilled Water Control Valve:

Cooling capacity shall be con-trolled with a slowly opening and slowly closing 2-way motorized control valve rated for 300 psig w.w.p.

(Note: 3-way 300 psig motorized valves and 2 or 3-way modulating valves are available as options .)

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Air Technology Systems, Inc.

Guide Spec's

- Standard Features "Quick-Reference" T

able

Selected Standard Features

-

"OHS" Series

"OHS" Model

012/040-( ) 012/040-H( ) 048/060-( ) 048/120-D( )

SELECTED STANDARD FEATURES:

TEMPERATURE CONTROL

• Cooling Only Std Std Std Std

• Heating / Reheating Control Opt Opt Opt Opt

HUMIDITY CONTROL

• Electrode Canister Steam Humidifier Opt Opt Opt Opt • Dehumidification Mode with Reheat Opt Opt Opt Opt

CONTROLS

• A-Tech-1.1 single stage controls Std Std Std N/A • A-Tech-1.2 two stage controls Opt Opt Opt Std • C-Tech-10, A-Tech-20, C6000 T/H Microprocessor Controls Opt Opt Opt Opt

CABINET

• All Aluminum Construction Std Std Std Std • Insulated SS or Polymer Condensate Drain Pan Std Std Std Std • 1/2", 2 lb Density Thermal & Sound Insulation Std Std Std Std • Rubber Hanging Vibration Isolators Std Std Std Std

FILTERS / GRILLES

• Spot Coolers with bottom supply / return filter grille Std N/A N/A N/A • Ducted Units with flanged ducted connections Opt Std Std Std

DX-REFRIGERATION CIRCUIT

• R22 Refrigerant Std Std Std Std

• R407C Refrigerant Opt Opt Opt Opt

• Scroll Type Compressor(s), (unless otherwise noted) Std Std Std Std • High Efficiency, Aluminum Fin / Copper Tube Coils Std Std Std Std • Thermal Expansion Valve Std Std Std Std • Refrigerant Sight Glass & Filter/Drier Strainer Std Std Std Std • Refrigerant Service Valves Std Std Std Std

BLOWERS / MOTORS

• Direct-Drive Evaporator Motors Std N/A N/A N/A • Belt-Drive Evaporator Motors N/A Std Std Std

ELECTRICAL

• Power Supply See Electrical Tables Section 5 • Multi-Voltage Control Transformer (24V Class II) Std Std Std Std • Individual Motor Starter(s) / Contactor(s) Std Std Std Std

SAFETY FEATURES

• Condensate Pan Overflow Safety Switch(es) Std Std Std Std • High / Low Refrigerant Pressure Switches (DX units) Std Std Std Std • Motor Overcurrent and Overload Protection Per UL 1995 Std Std Std Std

SPECIFIC MODEL STANDARD FEATURES:

AIR COOLED

• Low Ambient Head Pressure Control Three types available 0°F, -20°F or -30°F • Integral (model OHS-()-AS) or Remote Air Cooled Condenser Std Std Std Std

WATER / GLYCOL COOLED

• 2-way, 150 psig Water/Glycol Regulating Valves Std Std Std Std • High Pressure & 3-way Valves Opt Opt Opt Opt • Coaxial, Tube-in-Tube Heat Exchanger Std Std Std Std

ALL SPLIT DX SYSTEMS

• Liquid Line Solenoid Valve to Prevent Liquid Slugging Std Std Std Std

DUAL CIRCUIT DX SYSTEMS

• Two(2) Independent Refrigerant Circuits N/A N/A N/A Std • Two(2) Equal Horsepower Scroll Compressors (1 per circuit) N/A N/A N/A Std • A-Tech-1.2 two stage controls N/A N/A N/A Std

CHILLED WATER SYSTEMS

• 2-way, 300 psig Motorized Valve Std Std Std Std • Modulating, High Pressure & 3-way Valves Opt Opt Opt Opt

CODE CONFORMANCE

• NRTL Conformance Compliance to UL 1995 Standard Std Std Std Std • NYC MEA-163-88-E / Chicago Code Approval Std Std Std Std

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Guide Spec's

- Standard Equipment

Guide Specifications

-

Standard Equipment

QUALITY ASSURANCE

(ISO-9001:2001 Registered)

SATS operates in an ISO-9001:2001 registered quality control environ-ment. Each SATS employee is committed to satisfying his or her customer expectations with the highest level of consistent, mea-surable and continuous quality improvement.

GENERAL GUIDE

SPECIFICATION

General Description

The system shall be a ceiling mounted supplemental air conditioner de-signed and built to the highest of industry standards. The system shall be complete and factory run-tested before shipment. The system shall be listed and labeled in compliance with UL 1995 (# SATS-1995) by an ap-proved Nationally Recognized Testing Laboratory (NRTL). The system shall be MEA NYC (MEA-163-88-E) and Chicago Code approved.

The system shall be manufactured by ISO-9001 Quality Registered Stulz Air Technology Systems, Inc. in Frederick, Maryland, USA.

Component Access

The air conditioner shall be fully accessible in-place through easily removable side access panels.

Cabinet Construction

The cabinet and access panels shall be fabricated from aluminum for cor-rosion protection and to minimize the system’s weight. The panels shall be lined with 2 lb/ft2 high density sound

and thermal insulation and sealed with self-extinguishing gasketing con-forming to NFPA 90A and 90B.

Electrical System

The system shall incorporate overcur-rent and overload protection in ac-cordance with UL 1995 requirements. Each blower motor, compressor, electric heater stage and humidifier (if applicable) shall be provided with a factory mounted and wired starter / contactor.

The control circuit shall be a 24 VAC Class 2 low voltage circuit including a circuit breaker for protection. Low voltage, high voltage and grounding wires shall be color coded and shall be individually numbered at each end for ease of service tracing. All wiring shall be in accordance with the National Electric Code (NEC).

Overflow Safety Float Switch

A condensate pan water level switch shall be incorporated to shut the sys-tem down if a condensate overflow condition is sensed.

Remote Stop / Start

Included in the system's electrical control circuit shall be a 2-pin termi-nal connection for remote stop / start of the CeilAiR air conditioner by a remote source.

Coils

Evaporator systems shall be con-figured for a draw-thru air pattern to provide uniform air distribution over the evaporator coil face. The coils shall be seamless drawn copper tubes, mechanically bonded to

tem-pered aluminum fins with a raised-lanced fin design for maximum heat transfer. Coil end plates shall be hot dipped galvanized.

The evaporator coil shall be mounted in an insulated stainless steel conden-sate pan.

DX- Refrigeration System

All refrigeration piping shall be refrig-erant grade tubing. Each refrigrefrig-erant circuit shall include, as a minimum, refrigerant drier/strainer, sight glass with moisture detector, thermal expansion valve with rapid bleed port feature and external equalizer, evapo-rator coil, compressor, high pressure switch with manual reset and a low pressure switch with automatic reset. Split / Remote systems shall have a liquid line solenoid for refriger-ant isolation to prevent liquid slug-ging. All high pressure joints shall be brazed, and the entire system shall be pressure tested at the factory with dry nitrogen, evacuated to at least 50 microns and fully charged with refrigerant.

Note: All split / remote DX systems ship with a dry nitrogen holding charge. All self-contained DX systems ship with a full refrigerant (R-22) operating charge.

Scroll Compressors

Each compressor shall be a high ef-ficiency, high reliability and low sound Scroll Compressor, unless specifically noted otherwise. Thermal Expansion Valves Sight Glasses Filter Drier/ Strainers

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Air Technology Systems, Inc.

Guide Spec's

- Standard Equipment

Guide Specifications

-

Standard Equipment

The compressor shall be complete with charging and service schraeder ports, internal vibration isolation, internal thermal overloads, internal pressure relief valve, internal dis-charge gas vibration eliminator and external vibration mounting isolation.

Chilled Water Systems

(Models OHS-()-C)

Cooling Coil:

The chilled water coil shall be con-structed of seamless drawn copper tubes, mechanically bonded to tem-pered aluminum fins for maximum heat transfer. Coil end plates shall be hot dipped galvanized.

The cooling coil shall be mounted in an insulated stainless steel conden-sate drain pan.

Control Valve:

Cooling capacity shall be controlled by a factory installed slowly opening and slowly closing 2-way motorized control valve rated for a maximum 300 psig w.w.p.

(Note: Please refer to page 3-10 for ad-ditional chilled water valve options.)

Blowers / Motors

Direct Drive Systems

The blower(s) shall be direct driven with double width, double inlet hous-ing and forward curved blades. The blower(s) shall be dynamically and statically balanced to minimize vibra-tion and operate in the Class I range. The blower(s) shall be corrosion protected with a painted housing and impeller wheel.

The three speed (208V) evaporator

motor shall be factory wired for the correct speed to produce the speci-fied air quantity. The motor(s) shall have internal overload protection.

(277V & 460V direct-drive motors shall be 2-speed.)

Belt Driven Systems

The blower(s) shall be belt driven with double width, double inlet hous-ing and forward curved blades and permanently lubricated ball bearings sized for an average 100,000 hours of service life. The blowers shall be dynamically and statically balanced to minimize vibration and operate in the Class I range.

The blower(s) shall have an adjust-able base for belt tensioning and a locking system to prevent the mo-tors from moving. The momo-tors’ drive sheaves shall have an adjustable pitch to change the speed of the blowers. The motor(s) shall be 1725 RPM and shall have overload protection and a minimum NEMA service factor of 1.15.

Temp & Humid Control

The standard CeilAiR system is con-figured as a "cooling only" system. Heating, reheating and/or humidity control can be optionally added to provide total space temperature and humidity control. (Please see pages 3-5 thru 3-7 for more details.)

A-Tech-1.1

Standard single stage DX and non-proportional CW Heat/Cool programmable digital thermo-stat.

A-Tech-1.2

Standard dual stage DX Heat/ Cool program-mable digital thermostat.

C-Tech-10

Optional single or dual stage DX or non-propor-tional CW

Temperature and Humidity Micro-processor Controller with alarms.

A-Tech-20 & C6000

Optional all pur-pose Advanced Temperature and Humidity Microprocessor Controllers with alarms and op-tional remote BMS com-munications connections.

(NOTE: Please refer to pages 3-6 & 3-7 for additional specification details on all CeilAiR ceiling AC control options.)

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Guide Spec's

- Standard Equipment

Guide Specifications

-

Standard Equipment

Evaporator Air

Patterns & Filtration

"Ductless" Spot Cooler

(Models OHS-012 thru 040-( ) only.) The air conditioner shall be designed for installation in a standard 2' x 4' ceiling grid for ductless supply and return evaporator air through a fac-tory provided bottom supply & return filter grille.

The air conditioning unit shall have a drop out, 1" deep, class 2 (per U.L. Standard 900) filter easily accessed through the hinged return grille. The filter shall have a rating of at least 80% average arrestance as measured by ASHRAE Standard 52-76 test method.

Ducted Evaporator

(Available on all model sizes)

The air conditioner shall be provided with evaporator supply and return air duct connections.

EVAPORATOR AIR OUT EVAPORATOR AIR IN EVAPORATOR AIR OUT EVAPORATOR AIR IN

The unit shall have slide out, 1" deep Class 2 (per U.L. Standard 900) filter(s) easily accessed through a side access panel. The filter shall have a rating of at least 80% average arrestance as measured by ASHRAE Standard 52-76 test method.

(Note: Please refer to Section 6 for standard CeilAiR cabinet configurations. Consult your local SATS sales representa-tive for special applications.)

DX - Heat Rejection

AIR COOLED

Please refer to the SATS Heat Rejec-tion Engineering Manual for specifica-tion details of air cooled condensers and condensing units.

WATER / GLYCOL COOLED

Water/Glycol Cooled

Condensers

Coaxial Tube-In-Tube:

(Models OHS-012/120-()W/G)

Each evaporator refrigerant circuit shall be provided with a factory installed single pass, counterflow configured, tube-in-tube coaxial condenser; designed and tested for a 450 psig. w.w.p.

2-Way, 150 psig Regulating Valve

(Standard on all OHS-( )-()W/G) Each refrigerant circuit's head pres-sure shall be controlled by a factory installed 2-way water / glycol regulat-ing valve rated for 150 psig. w.w.p.

(Note: 3-way and high pressure water/ glycol regulating valves are optionally available, page 3-9.)

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Optional Features

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Guide Specifications

Optional Features Index

OPTION

... page

Free Cooling - Valve Combinations

• 150 psig Rated System: (standard) ... 3-11 - 3-way, 150 psig, DX Condenser Valve(s)

- 3-way, 300/400 psig, FC Coil Valve

• 300 psig Rated System: (optional) ... 3-11 - 3-way, 350 psig, DX Condenser Valve(s)

- 3-way, 300/400 psig, FC Coil Valve

• 400 psig Rated System: (optional) ... 3-11 - 3-way, 450 psig, DX Condenser Valves

- 3-way, 400 psig, FC Coil Valve

Capacity Modulation Options

• Snap-Acting, Hot Gas Bypass ... 3-11 • Full-Floating, Hot Gas Bypass ... 3-12 • Dual Compressor / 2-Stage Systems ... 3-12 • Modulating Chilled Water Control Valves ... 3-12

ACCESSORIES

• 3-Phase Power Supply... 3-12 • 277/1/60 Power Supply... 3-12 • Condensate Pump ... 3-12/13 • Smoke Detector ... 3-13 • Firestat ... 3-13 • Remote Water / Leak Detector ... 3-13 • Acoustical Compressor Sound Jackets ... 3-13 • Low Entering Condenser Water ... 3-14 • Main Power - Non-Fused Service Switch ... 3-14 • Refrigerant Lines with

Quick Disconnect Couplings ... 3-14

Energy $aving Cooling Options

• Free-Cooling Cycle ... 3-14 • Alternate Water Source Cycle ... 3-14

Microprocessor Controls

• A-Tech-1.1 (Digital Thermostat, 1-stage) ... 3-6 • A-Tech-1.2 (Digital Thermostat, 2-stage) ... 3-6 • C-Tech-10 (Micro Temp/Humid w/ Alarms) ... 3-6 • A-Tech-20 Advanced Microprocessor ... 3-7 • A-Tech-20 Remote Communications ... 3-7 • C6000 Advanced Microprocessor ... 3-8 • C6000 Remote Communications ... 3-9

Humidity Control Options

• Steam Humidifier ... 3-10 • Dehumidification Cycle

- Electric Reheat / Heat ... 3-10 - Hot Gas Reheat ... 3-10 - Hot Water Reheat / Heat ... 3-10 - Steam Reheat / Heat ... 3-10 - SCR Fired (0-10 Vdc) Electric Reheat ... 3-10

High Static Pressure Blowers

• High Static Belt-Drive Blower Upgrade ... 3-10/11 (Up to 2.0" ext. static pressure)

High Efficiency Filtration (IAQ)

• IAQ High Efficiency Filters ... 3-11

Head Pressure Control Options

Air Cooled - Low Ambient Control

• 0°F Ambient ... 3-11 • -20°F Ambient ... 3-11 • -30°F Ambient ... 3-11

Water/Glycol Cooled - Regulating Valves

• 2-way, 150 psig (Standard) ... 3-11 • 2-way, 350 psig ... 3-11 • 2-way, 450 psig ... 3-11 • 3-way, 150 psig ... 3-11 • 3-way, 350 psig ... 3-11 • 3-way, 450 psig ... 3-11

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Optional Features

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Microprocessor Control Options

A-Tech-1.1

The CeilAiR ceiling air conditioner shall be provided with SATS' "slimline", ultra-thin profile, 1-stage cool / 1-1-stage heat, remote wall mounted programmable digital microprocessor based con-troller.

Note: The A-Tech-1.1 thermostat is stan-dard on all single stage DX and non-pro-portional chilled water systems.

A-Tech-1.2

The CeilAiR ceiling air conditioner shall be provided with SATS' "slimline", ultra-thin profile, 2-stage cool / 2-stage heat, re-mote wall mounted programma-ble digital microprocessor based controller.

Note: The A-Tech-1.2 thermostat is stan-dard on all dual stage DX systems.

Common A-Tech-1.1/1.2 Features:

• Auto changeover for Heat/Cool Modes • Selectable °F or degrees C display • Fan selector for continuous fan operation

• Built-in short cycle protection

• Internal switch to lock-out the keypad to prevent unauthorized tampering • Electronic calibration

• 45 second fan purge after heating and cooling call

• Day/Night button for user selectable alternate setpoint manual setback

• 12 hour or 24 hour clock • Daylight Savings Time button to adjust the clock +/- 1 hour

• Copy button to allow one program to be copied to subsequent days • Override feature

• Does not require a battery • Solid state electronic output

C-Tech-10

Temperature & Humidity Microprocessor Controller

The CeilAiR ceiling mounted air conditioner shall be provided with SATS' C-Tech-10 Microprocessor based Temperature and Humid-ity controller with Alarms. The controller shall incorporate a user-friendly operating environment with backlit graphic LCD display.

Standard Features:

Display / Keypad:

• Backlit LCD graphic display with characters to show the operat-ing mode, time, set points and actual readings

• Internal Temperature and Hu-midity Sensor

• 3 Set Point Programmable (Normal, Temporary, Night) per day, 7 days per week

• Summary Alarm Contact

Visual/Audible Alarm Indication:

■ High Temp (HI T) ■ Dirty Filter (E FL)

■ Low Temp (LO T) ■ Sensor Failure

■ High Humid (HI H) ■ Comm. Failure

■ Low Humid (LO H) ■ Summary (E ID) • Summary Alarm (E ID): condensate

overflow/water detection; smoke detec- tion; firestat (if applicable)

• Maintenace Alarms: based on user defined component run-times schedules (compressor 1 (HR 1) & 2 (HR 2); evap blower (HR F).

CeilAiR Control

Options

5-Levels of microprocessor control offer-ings allow you the flexibility of selecting the best control scheme for their unique requirements:

A-Tech-1.1

Standard single stage DX and non-proportional CW Heat/Cool programmable digital thermo-stat.

A-Tech-1.2

Standard dual stage DX Heat/ Cool program-mable digital thermostat.

C-Tech-10

Optional single or dual stage DX or non-pro-portional CW Temperature

and Humidity Microprocessor Controller with alarms.

A-Tech-20

Optional all pur-pose Advanced Temperature and Humidity Microproces-sor Controller with alarms and

optional remote BMS communi-cations connections.

C6000

Optional all purpose Advanced Temperature and Humidity

Microprocessor Controller with alarms and optional remote BMS communications connections.

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Optional Features

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Microprocessor Control Options

System Operation:

• Fan Continuous or on Demand • Auto-Restart Upon Power Loss • Remote Stop/Start Connection • Short Cycle Protection

• Cold Start Time Delay • Pump-Down Cycle

Optional Features:

Remote Temp/Humid Sensor: • Optional remote wall mounted temperature and humidity sensor Remote Sensor Cable Options: • 75 ft. cable length (standard option)

• 150 ft. cable length

A-Tech-20

Advanced Microprocessor Temperature & Humidity

Controller with Alarms

The CeilAiR ceiling mounted air conditioner shall be provided with SATS' A-Tech-20 Advanced Micro-processor based Temperature and Humidity controller with Alarms. The controller shall incorporate a "user-friendly" operating environ-ment, to allow easy system setup and operation.

Standard Features:

• 4 x 20 character liquid-crystal alpha-numerical display • Field Configurable

• 30 Ft. Remote Display Cable • Unit Mounted T/H Sensor • Current Unit Status

• Component Run-Time History • Visual & Audible Alarm Indication • Summary Alarm Contacts

• Alarm History

• Remote Stop / Start Connection • Selectable Automatic or Manual Restart Upon Power Loss • Sequential Load Activation Upon Power Loss Restart

• Alarm Delay for Space T/H ery Upon Power Loss Restart • Multi-Level Password Security Protection

• Short Cycle Protection • Cold Start Time Delay • Pump-Down Cycle • Service Mode

• Time-Clock with Override • Night-Setback with Override

Display/Sensor Options:

Remote Display Cable Options:

• 30 ft. cable length (standard)

• 75 ft. cable length • 150 ft. cable length

Remote Sensor Cable Options:

• 75 ft. cable length (standard option)

• 150 ft. cable length

ALARM CONDITIONS:

The A-Tech-20 alerts to the following alarm conditions (if applicable): ■ High Temperature ■ Dirty Filter

■ Low Temperature ■ Smoke Detection

■ High Humidity ■ Firestat

■ Low Humidity ■ Leak Detection

■High Head Press ■ GC Pump Failure

■ Low Suction Press ■ Sensor Failure

■ Loss of Air Flow ■ Comm. Failure

■ Loss of Power

The operator may select which alarms are active or inactive.

CyberLAN Networking Options:

Multi-Unit Sequencing:

Multiple CyberAiR air conditioners incorporating A-Tech-20 controls can be configured in groups of up to 6 (six) units to allow for "N+1" redundancy/backup critical appli-cation operation.

The A-Tech-20 is programmed to automatically change from current primary unit operation to second-ary standby unit operation via

three methods:

1) Manual ChangeOver

2) Automatic Timed (1-30 days) 3) Automatic ChangeOver on Unit

Failure (if applicable): Interconnect Cable Options:

• 75 ft. cable length (standard option)

• 150 ft. cable length

Capacity Assist-Mode: (Additionally Optional)

In addition to switchover via manual, automatic timed or failure, the CyberLAN Multi-Unit Sequencing “Capacity Assist-Mode” can initiate switchover to standby unit operation to assist in the temperature and/or humidity control of the space.

Capacity Assist Sensor Cable Opts:

• 75 ft. cable length (standard option)

• 150 ft. cable length

CyberLAN w/ A-Tech 20

Remote Communications

(Optional)

REMOTE BMS CONNECTION (ModBus Gateway)

A-Tech-20 Inputs & Outputs can be remotely monitored (address readable) and remotely controlled (address writable) via any build-ing management system (BMS) / local area network (LAN) control system that can communicate via a ModBus protocol.

16 Units Per CyberLAN ModBus: Each ModBus Gateway can ac-commodate up to 16 (sixteen) A/C units in a group.

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Optional Features

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Microprocessor Control Options

C6000

The CeilAiR ceiling-mounted air conditioner shall be provided with SATS’ C6000 Microprocessor based Temperature and Humidity control-ler with Alarms. The controlcontrol-ler shall incorporate a “user-friendly” oper-ating environment, to allow easy system setup and operation. The C6000 is a complete micro-processor based control system designed for operating, controlling and monitoring the precision air conditioning unit.

The C 6000 controller shall include a full-featured LED display for visual indication of the units operating conditions.

The controller shall be mounted in an indoor rated steel box. The box shall be powder coated to match the environmental control unit. The box shall contain the controller board, the IO board, and all neces-sary transformers and internal wir-ing. The control box shall be wall mounted and field wired to the environmental control unit. Display Key Pad

The Display Key Pad shall feature an easy to read, liquid-crystal alpha-nu-merical display. The keypad/display allows the operator to visually moni-tor and customize unit functions and settings. The self-explanatory, keypad nomenclature shall aid in the ease of location of system pro-gramming features.

Field Configurable

The C6000 controller is field pro-gram configurable and capable of matching the unique needs of any data center, telecommunication or other critical area.

Sensor Location Options

As a standard, the C6000 tempera-ture and humidity sensor shall be factory unit mounted in the return air stream of the Precision AC unit, after the return air filter(s).

System Setup & Adjustments The C6000 shall be completely factory preprogrammed, and there-fore, most applications will require no field setup. However, the “de-fault” set points and their ranges are easily adjusted from C6000 keypad/display.

Unit Status Display

The C6000 keypad displays current unit functions and room status:

• Current Dry Bulb Temp Set Point

• Current Relative Humidity Set Point

Current Unit Status

• System ON/OFF • Cooling • Heating • Humidifying • Dehumidifying • Standby Mode • Reheating • Manual Mode

• Actual Room DB Temperature

• Actual Room Relative Humidity Run Times

The historical run-time in hours of the following major components shall be available directly from the C6000 keypad/display: (if ap-plicable)

• Blower Motor(s)

• Humidifier

• Chilled Water Valve Alarm Conditions

Alarm conditions activate an au-dible and visual indicator. An alarm shall be acknowledged through a Reset button located on the keypad display.

The C6000 alerts to the following alarm conditions (if applicable):

• High Temperature • Low Temperature • High Humidity • Low Humidity • Smoke Detection • Firestat • Leak Detection • Sensor Failure • Dirty Filter

• Loss of Air Flow

Summary Alarm Contact

A summary alarm dry-contact (n/o) connection shall be available for remote annunciation of an alarm condition. An additional user-de-fined custom alarm dry-contact shall also be available on most system configurations.

Alarm History

The C6000 controller provides users with a recorded history of the last 80 alarms, including the time and date of the alarm occurance. Control Inputs/Outputs

The C6000 is capable of both digital (on/off) and analog input and output device control. Prior to shipment, each Precision AC unit’s C6000 is factory program config-ured to match the unit’s system operational requirements.

Temperature Anticipation The C6000 shall incorporate a self-calibrating and self-adjusting control logic that adjusts the

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sponse of the SATS air conditioner

to changes in temperature and humidity. The system shall provide premium setpoint accuracy while controlling the room condition’s rate of change, minimizing the equipment energy consumption and maximizing the system’s operating life and reliability.

Power Loss Restart

In the event of a loss of power to the system, the C6000 can be con-figured for Automatic or Manual Restart. The C6000’s non-volatile memory enables the system to re-start when power is restored, with-out the loss of the “last” stored set points and other system configura-tion settings.

Sequential Load Activation To minimize the total in rush current loads during system startup/restart, the C6000 controller shall be con-figured for time-delay sequence startup. The user can designate specific unit restart time-delays, as well as, each unit’s respective electric heater and/or humidifier. Unit restart delay can be adjusted from 0 to 10 minutes.

Recovery Delay

After a power loss, the C6000’s Recovery Delay feature allows the system to operate without initiating any high or low temperature or hu-midity alarms for a delayed period. This feature allows time (15 to 60 minutes adj.) to “pull-down” the conditioned space’s load without nuisance alarms during initial startup or power loss restart.

Security

Multiple security levels prevent unauthorized adjustment of critical system control parameters.

Diagnostic & Service Mode The C6000 shall incorporate a unique self-diagnostics algorithm that continually tests systems func-tions and hardware operation. In the event of such a failure, the user will be alerted to the condition via a visual and audible alarm.

Control Board

The Control Board shall initiate a self-test of the control system. Input Diagnostics

All system inputs and output devices shall be continuously monitored for proper operation.

Night Set-back

The C6000 shall include Night Set-Back occupied/non-occupied energy saving modes. This feature enables the user to customize each unit’s daily 5-day/weekly and 2-day/week-end operational schedule.

Remote BMS Connection

MIB GATEWAY (Optional)

C-6000 Inputs & Outputs shall be remotely monitored (address readable) and remotely controlled (address writ-able) via any building management system (BMS)/local area network (LAN) control system that can communicate via a ModBus protocol. Each C-6000 configured for BMS communication shall incorporate an RS-485 Se-rial Communication Port that is field connected to a factory provided wall mounted MIB Gateway.

MIB-FS GATEWAY (Optional)

C-6000 Inputs & Outputs shall be remotely monitored (address read-able) and remotely controlled (address writable) via a building management system (BMS)/local area network (LAN) control system. Available Protocols, Modbus RTU, Modbus TCP/IP, Bacnet IP, Bacnet MSTP, Bacnet Ethernet, Metasys N-2, and Lonworks.

Each C-6000 configured for BMS com-munication shall incorporate an RS-485 Serial Communication Port that is field connected to a factory provided wall mounted MIB Gateway. The MIB-FS requires field configuration. Number of units, type of protocol employed, and individual data-points monitored must be configured in the MIB-FS prior to use.

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Guide Specifications

SELECTED OPTIONS

Humidity Control

Canister Steam Humidification

The humidifier shall be an electrode steam canister type and shall have an adjustable humidity output setting from 25 to 100% of the full rated humidifier capacity, an automatic flush cycle that senses the current consumption of the humidifier and controls mineral concentration of the water. A “Change Cylinder” light shall notify service personnel when the humidification output is below rated requirements and when mainte-nance is due.

Dehumidification Cycle

The ceiling air conditioner shall be provided with a refrigeration based dehumidification mode. Moisture shall be condensed on the cooling coil and discharged through the condensate drain.

Reheat (electric, hot gas, hot water or steam) shall be provided to offset sensible cooling during the dehumidi-fication cycle.

Electric Reheat/Heat

A factory mounted and wired electric resistance heater shall be included to provide automatic sensible reheating mode during the dehumidification cycle and automatic heating mode as required. Electric heaters shall be provided with thermal / magnetic circuit breakers which shall protect each conductor. The heater elements shall be housed within a stainless steel frame with mounted supports. Included shall be one automatic resetting over-temperature safety device (pilot duty), and a non-reset-table over-temperature safety device (located in main power line).

Heaters shall use fast reacting ni-chrome wire heater elements which cool quickly when turned off elimi-nating residual heat problems.

Hot Gas Reheat:

(Models OHS-()-AS, AR, W & G only)

HP LP Flooded Head Pressure Control Valve Equalizer Line Solenoid Valve Refrigerant Reclaim Port Liquid Refrigerant Receiver Relief Valve Sight Glass Refrigerant Drier / Strainer Thermal Expansion Valve Scroll Compressor Remote Air Cooled Condenser Evaporator Cooling Coil Feeler Bulb Hot Gas Reheat Coil Air Flow Hot Gas Reheat Valve Equalizer Line

A factory installed copper tube, alumninum fin hot gas reheat coil and valve shall be provided for automatic sensible reheating mode during dehumidification cycle. Hot compressor discharge gas shall be diverted from the condenser to the hot gas reheat coil providing energy free sensible reheating.

(Note: Hot Gas Reheat is not available on systems incorporating Free-Cooling or Alternate Water Source, because no method of reheat would be available during non-compressorized FC or AWS operation.)

Hot Water Reheat/Heat A factory installed copper tube, aluminum fin heat/reheat coil and 2-way control valve shall be provided to control the flow of hot water for automatic sensible reheating mode during the dehumidification cycle and automatic heating mode as required. Steam Reheat/Heat

A factory installed copper tube, alu-minum fin heat/reheat coil and 2-way control valve shall be provided to control the flow of steam for automatic sensible reheating mode during the dehumidification cycle and automatic heating mode as required.

(Note: Steam trap and steam piping specialities shall be provided by others not SATS.)

SCR Fired Reheat/Heat

The electric heat/reheat shall be controlled through a “Zero Firing” Silicon Controlled Rectifier (SCR) with an extruded aluminum heat sink and solid state logic system to provide close dry bulb temperature control of the conditioned air.

A-Tech-20 proportional (0-10 Vdc) microprocessor controls shall be provided with the SCR Fired Electric Reheat option.

High Static Pressure

Belt-Drive Blowers

The CeilAiR ceiling air conditioner shall be provided with a high static pressure belt-driven evaporator blower to provide standard unit CFM @ ____ " e.s.p.

(Note: Due to the probable change in standard unit blower motor horsepower for the High Static Belt-Drive Blower

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Optional Featur

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- Guide Specifications

Optional Features

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Guide Specifications

}

3-way valves

ship loose for field installation. option, please consult your local SATS

sales representative for the following unit specification changes:

• Blower Motor Horsepower • Net Cooling Capacity • Electrical Data • Discharge Blower Data

Unit AIr Flow Rate (CFM) will match the standard data as shown in Section 4 of this manual for each respective unit model.)

Filtration

CeilAiR ceiling A/C's are available with the following standard (F1) and optional (F2, F3 & F4) high efficiency IAQ conscious filtration:

F1: 1", 20% Eff. Filters (standard)

F2: 2", 30% Eff. Filters F3: 4", 60% Eff. Filters

F4: 2", 30% Pre / 4", 60% Eff. Final Filters

Air Pattern Type Filters Avail.

Direct Drive 012/040: w/ Spot Cooler: F1

w/ Ducted Return: F1, F2 (n/a 024) Belt-Drive Units:

w/ Ducted Return: F1, F2, F3 & F4 Filter ratings are based on dust spot ef-ficiency ratings per ASHRAE Test Standard 52-76.

(Note: F2, F3 & F4 optional filters create additional static pressure and may require the High Static Pressure Belt-Drive Option. Please consult your local Sales Represen-tative for details.)

Head Pressure Control

AIR COOLED

- Low Ambient 0°F, Fan Cycling / Fan Speed

The air cooled system shall incor-porate a low ambient fan cycling /

fan speed head pressure control for year-round air conditioning system operation down to 0°F DB minimum ambient air temperature.

(Note: 0°F fan cycling head pressure con-trol is a standard feature for all CeilAiR air cooled condensers and condensing units incorporating direct drive condenser fans.)

-20°F, Variable Speed Control (Model WCS-( ) Condensers)

The air cooled system shall incorpo-rate a low ambient variable speed fan head pressure control for year-round system operation down to -20°F DB minimum ambient air temperature.

-30°F, Flooded Control HP LP Flooded Head Pressure Control Valve Equalizer Line Liquid Line Solenoid Valve Refrigerant Reclaim Port Liquid Refrigerant Receiver Relief Valve Sight Glass Refrigerant

Drier / Strainer Thermal Expansion Valve Low Pressure Switch Scroll Compressor Remote Air Cooled Condenser (Optional) Evaporator Cooling Coil Feeler Bulb High Pressure Switch

The air cooled system shall incor-porate a low ambient flooded head pressure control for year-round system operation down to -30°F DB minimum ambient air temperature. This option shall include a factory installed crankcase heater, cold-start relay, liquid refrigerant receiver with receiver liquid level sight glass and head pressure regulating valve for flooded condenser operation.

DX Water Cooled and Glycol Cooled systems are available with following standard (V1) and optional (V2-V6) head pressure regulating control valves:

V1: 2-way, 150 psig (standard)

V2: 2-way, 350 psig V3: 2-way, 450 psig V4: 3-way, 150 psig V5: 3-way, 350 psig V6: 3-way, 450 psig

Each refrigerant circuit's head pres-sure shall be controlled by a factory (or field) installed ____-way water / glycol regulating valve rated for ____ psig. w.w.p.

FREE-COOLING SYSTEMS

DX Water/Glycol Cooled systems with Free-Cooling are available with the following standard and optional DX head pressure and Free-Cooling valve combinations:

150 psig Rated System: (standard)

• DX Valves = 3-way, 150 psig • FC Valve = 3-way, 300/400 psig 300 psig Rated System: (optional)

• DX Valves = 3-way, 350 psig • FC Valve = 3-way, 300/400 psig 400 psig Rated System: (optional)

• DX Valves = 3-way, 450 psig • FC Valve = 3-way, 400 psig Each refrigerant circuit's head pres-sure shall be controlled by a field installed 3-way water / glycol regulat-ing valve rated for ____ psig w.w.p. Free-Cooling mode cooling shall be controlled by a factory installed 3-way motorized (on/off) control valve rated for ____ psig. w.w.p.

Note: Modulating (0-10 Vdc) Free-Cool-ing mode coolFree-Cool-ing control is optionally available via A-Tech-20 controls and modulating 3-way FC control valve.

DX - Capacity Modulation /

Freeze-Protection

SNAP-ACTING, Hot Gas Bypass

(Models OHS-()-AS, AR, W & G only)

The CeilAiR ceiling A/C shall incor-porate a snap acting hot gas bypass system to provide modulation of the unit’s cooling capacity and evaporator coil freeze protection under low load conditions.

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Optional Features

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Guide Specifications

HP LP Flooded Head Pressure Control Valve Equalizer Line Liquid Line Solenoid Valve Refrigerant Reclaim Port Liquid Refrigerant Receiver Relief Valve Sight Glass Refrigerant

Drier / Strainer Thermal Expansion Valve Low Pressure Switch Scroll Compressor Remote Air Cooled Condenser (Optional) Evaporator Cooling Coil Feeler Bulb High Pressure Switch Hot Gas Regulator Valve (Optional)

FULL-FLOATING, Hot Gas Bypass

(Models OHS-( )-()AHU/SCO only)

The CeilAiR ceiling A/C shall incor-porate a full floating hot gas bypass system to provide modulation of the unit’s cooling capacity and evaporator coil freeze protection under low load conditions.

DUAL COMPRESSOR SYSTEMS (Models OHS-( )-D())

The air conditioner shall be a dual scroll compressor system with two independent refrigeration circuits to provide 50% capacity unloading, as well as component redundancy. The air conditioner shall be provided with a 2-Stage temperature control-ler with microprocessor based control logic for automatic staging.

Chilled Water & AWS

Control Valves

Chilled Water and Alternate Water Source cooling shall be controlled by the following standard and optional control valves:

Models OHS-012/060-C / AWS:

V1: 2-way, 300 psig (standard)

V2: 2-way, 400 psig V3: 3-way, 300 psig V4: 3-way, 400 psig

Models OHS-072/120-C / AWS:

V5: 2-way, 400 psig (standard)

V6: 3-way, 400 psig

Standard (On/Off) Valve Control :

A ____-way motorized (On/Off) CW or AWS cooling control valve rated for a maximum ____ psig w.w.p. shall be factory unit installed. Precision cooling control shall be accomplished via a spring return slow open and close valve design.

Optional (0-10 Vdc) Valve Control:

A ____-way modulating CW or AWS cooling control valve rated for a maximum ____ psig w.w.p. shall be factory installed. Precision cooling control shall be accomplished via a 0-10 Vdc A-Tech-20 analog control signal to the proportional actuating control valve.

ACCESSORIES

3 Phase Power Supply

HP LP Flooded Head Pressure Control Valve Equalizer Line Liquid Line Solenoid Valve Refrigerant Reclaim Port Liquid Refrigerant Receiver Relief Valve Sight Glass Refrigerant

Drier / Strainer Thermal Expansion Valve Low Pressure Switch Scroll Compressor Remote Air Cooled Condenser (Optional) Evaporator Cooling Coil Feeler Bulb High Pressure Switch

Three phase power supply is avail-able, as an option, on OHS-024, 032 & 040-() units.

Compressor, (belt-drive blower motor(s) and electric heat/reheat if applicable) shall be three phase in lieu of standard single phase. All other components (5/10 lb humidifier and direct drive motor(s)) shall be single phase, with each leg of power supply balanced as closely as possible.

(Note: Three phase power supply is a standard feature on models OHS-048 and larger units.)

277/1/60 Power Supply

(Models OHS-012 thru-040)

A main power distribution block shall be located in the air conditioner's electric box for single point power connection to a 277/1/60 power sup-ply source. All system components (motor, heater & humidifier, if ap-plicable) shall be rated for operation with a 277/1/60 power supply. 277V to 208V main power step-down transformers shall not be required.

Note-1: Fast delivery orders some-times require that the OHS system be shipped from stock as 208/1/60. In those cases, 277/1/60 applications are provided with a field installed 277 to 208 step-down transformer.

Condensate Pump

A Low-Profile condensate pump designed for limited height ceiling plenum installation shall be factory provided for automatic removal of condensate and humidifier flush water (if applicable). The condensate pump shall be field installed as a standard.

A heavy duty All-Metal condensate pump shall be provided for automatic removal of condensate and humidi-fier flush water (if applicable). The pump shall be constructed with a cast aluminum reservoir and impeller; aluminum reservoir cover and impel-ler chamber cover; stainless steel fasteners and a stainless steel motor shaft. The condensate pump meets most local codes for certification as a "plenum rated" pump. The conden-sate pump shall be field installed only.

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Optional Features

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Guide Specifications

1 to 3 Ton Models:

OHS-012/040-HAS, HAR, HAHU, HW, HG & HC

4 to 10 Ton Models:

OHS-048/120-()AR, AHU, W, G & C

Factory Installed In-Pan Condensate Pump

(Not Available w/ Humidifier)

Smoke Detector

A photo-electric smoke detector shall be factory installed in the CeilAiR evaporator section on the suction side of the evaporator blower. The smoke detector shall be rated for high air velocity applications, and shall shut down the air conditioner upon sensing smoke in the return air stream.

Firestat

The air conditioner shall be provided with a factory wired and mounted firestat. The firestat shall shut down the air conditioner upon sensing a high return air temperature.

Remote Water Detectors

Single (one) - Spot Type Detector:

Quantity 1(one) remote spot type

water/leak detector per CeilAiR A/C unit shall be factory provided for remote field installation. Upon sens-ing a water leak, the normally closed water detector control circuit shall open, thereby shutting down the air conditioner's water producing opera-tions.

Dual (two) - Spot Type Detectors:

Quantity 2(two) remote spot type water/leak detectors per CeilAiR A/C unit shall be factory provided for remote field installation. Upon sensing a water leak, the normally closed water detector control circuit shall open, thereby shutting down the air conditioner's water producing operations.

20 Ft. - Strip/Cable Type Detector:

A 20 Ft. in length remote strip/cable type water/leak detector shall be factory provided for remote field installation. In addition to the 20 ft. cable, a 24V power water detec-tor power module shall require field mounting and wiring to factory provided terminal connection. Upon sensing a water leak, the normally closed water detector control circuit shall open, thereby shutting down the air conditioner's water producing operations.

Compressor Sound Jackets

(Air Cooled 0°F OHS-()-AS, and Water/Glycol Cooled Only!)

Each compressor shall be provided with a factory installed acoustical sound jacket. Each sound jacket shall have a snap closure system for ease of removing and reinstallation during The condensate pump shall be

specifically designed to operate with the higher condensate temperatures caused by the flush and drain cycle of the electrode canister humidifiers.

Dual Overflow Safety Switches:

In addition to the standard conden-sate pan overflow safety float(s), the condensate pump shall include an internal overflow safety float switch which, when wired to the A/C's re-mote stop/start terminals, shall open the A/C's control circuit, thereby shutting the A/C down in the event of a condensate overflow.

Factory Installed - Optional

Low-Profile Condensate Pump

The CeilAiR Low-Profile condensate pump can be factory installed as an option on the following models:

OHS-012/040-AS, AHU, AR, W, G & C

Factory Installed Low-Profile Condensate Pump

In-Pan Condensate Pump

The CeilAiR In-Pan condensate pump can be factory installed as an option in the following models:

Figure

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References

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