Roof Top Unit Presentation Ver 17

8/13/2019 Roof Top Unit Presentation Ver 17

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Major Section to be Covered

First Encounter with the Units

Six quadrant access ports

Tour Through the Unit Pathways Air Path

Refrigerant Cycle

Solution Cycle

PLC/HMI Introduction Review

HMI: Main Screens


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First Encounter with the Units

Unit Modularity

Available Units

Envelop Outer Dimensions Envelope Overview

Construction Material

Required Clearances


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First Encounter: Unit Modularity


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First Encounter: Envelop Outer

Dimensions

Front View Back View

89

77

74


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First Encounter: Envelope Overview

Front View Back View

Condenser CoilCondenser FanHorizontal Process

Outlet Hatch

Regeneration Inlet

CompartmentElectrical

Compartment

Vertical Process Outlet

Compartment

Regeneration

Mechanical Port

Regeneration

Outlet Hatch

Process Inlet

Compartment


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Construction Material

Construction Materials Exterior:

Oven Cured Paint over 1.5 mm

Galvanized Steel.

Floor and Structural Columns 2mmGalvanized Steel

M6 Bolted Frame

Construction Materials Interior Polypropylene Solution Enclosure

with Polyethylene Insulation mats.


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First Encounter: Required Clearances

40

40

40

60

60

60


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Six quadrant access ports

Main Components Location

Process Inlet Port

Regeneration Inlet Port

Process Outlet Port Regeneration Mechanical Port

Electrical Port

External Condenser Port


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1. Process Inlet Port


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3. Process Outlet Port


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4. Regeneration Mechanical Port


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5. Electrical Port


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6. External Condenser Port


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Tour Through the Unit Pathways

Air Path

Refrigerant Cycle

Solution Cycle


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S-A

R-A

R-A

R-A

R-A

S-A

Supply Air

ExhaustAir

R= Refrigerant

A= Air

S= Solution

Exhaust Air

Return Air/

Outdoor AirOutdoor AirCondenser

Fan Array

Rooftop Schematic View: Air Path


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Air Path Trough the Unit


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Process Vertical Inlets

Return Air


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Air: Process Vertical Outlets

Zone


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Vertical Air Flow Path

Return Air Zone


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Air: Process Horizontal Inlets


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Air: Process Horizontal Outlets


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Air: Horizontal Air Flow Path

Out Door

Zone


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Air: Regeneration Air Path

Out Door

Out Door


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Condenser Air Path


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Air: Unit Modularity Duct Connectivity


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Air: Unit Modularity Duct Connectivity


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Variable Air Flow Capabilities

Fans and Frequency Drives Adaptability to installation requirements

Variability of external static pressure

Wider range of unit CFM operability


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Fan CurvesDTRT 2500 DTRT 5000

DTRT 2500 DTRT 3500 DTRT 5000 DTRT 7000


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S-A

R-A

R-A

S-R S-R

R-A

S-A

Supply Air

R= Refrigerant

A= Air

S= Solution

Exhaust Air

Return Air/

Outdoor Air

Outdoor Air

Rooftop Schematic View: Refrigerant

R-A

ExhaustAir

Condenser

Fan Array


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Refrigerant Cycle: Digital Compressor

Digital Compressor Description

PWM Methodology

Range of operation 60Hz Grid

Variability under changing loads

Tying the compressor modulation to our

advantage


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Refrigerant Cycle: Digital Compressor

15Hp

Emerson-Copland Digital Scroll

R-410a

60Hz, 3 Phase Crack case heater

PWM


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Pulse Width Modulation Topology

Indoor (Zone) Sensor

Type: Column Mounted OR

Supplied Air Sensor

Process Outlet

Duct Mounted

Solid StateRelay

Diagrams taken from: AE4-1395 (August 2012) 3-15 Ton Digital Compressors for AC


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Pulse Width Modulation Topology


Type: Column Mounted OR

Supplied Air Sensor

Process Outlet

Duct Mounted

Solid StateRelay

Diagrams taken from: AE4-1395 (August 2012) 3-15 Ton Digital Compressors for AC


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Electronic Expansion Valve


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Refrigerant Cycle: Condenser Coils

20 fins per inch

Improved Heat Rejection Built from Copper tubes and Hydrophobic

coating Aluminum fins


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Refrigerant Cycle: Refrigerant to Air

Heat ExchangerHeat Exchanger Location Regeneration Inlet

(Air Pre-Heat)

Process Inlet

(Air Pre-Cool)

Process Outlet (Air Post-Cool /Re-Heat)

Rows Deep / Coils / Fins per Inch 6 / 13/7 5 / 14 /4 2 / 16 /4


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Filter Dryers


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Solution Cycle

Schematics

Pumps

Protection Sump

Solution Levels Colona and Leak Detection

Anti Crystallization and High LL Prevention

Mechanism


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S-A

R-A

R-A

S-R S-R

Reg.

Sump

Proc.

Sump

R-A

S-A

Supply Air

R= Refrigerant

A= Air

S= Solution

Exhaust Air

Return Air/

Outdoor Air

Outdoor Air

Rooftop Schematic View: Solution Cycle

R-A

ExhaustAir

Condenser

Fan Array

S l i C l P L i


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Solution Cycle: Pump Location

Reminder

Solution Cycle: Pumps Present to


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Solution Cycle: Pumps Present to

Future

Benefits of the shift:

Solution flow away from the air stream Manufactured in chemical resistant thermoplastics (PP) encapsulated magnet, spindle

housing and pump housing.

Magnetic coupling require no seals or lubricants for operation

Provides energy efficient thermal shield, minimizing heat transfer to the pumped fluid.

Leak-free environment for the LiCl media.

Continuous flow of aggressive chemicals and chilled fluids with no obstruction.

Semi Immersed Mechanically

Coupled Centrifugal Pump Magnetic Drive Centrifugal Pump

S l i C l P Pl


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Solution Cycle: Pump Placement

Allocation

S l ti C l M di d M if ld


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Solution Cycle: Media and Manifold

Solution Distribution

Hexagonal Corrugated (45 x 45) Cellulose PaperSheets placement.

Similar Manifold placement for the Process andRegeneration.

Cross flow: Solution to Air HEXHighEvaporation Efficiency and low pressure drop.

S l ti C l M di d M if ld


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Solution Cycle: Media and Manifold

Solution Distribution

Media Ratio differences from DT-Large

Manifold construction similarities to DT-Large Manifold

Silicon Tube

Central connection to even distribution

Process media

volume

Process Top cross

section

Regeneration media

volume

Regen. Top cross

section

DTRT/DTL +20% -4% +5% -30%

S l ti C l S l ti t R f i t


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Solution Cycle: Solution to Refrigerant

Heat Exchangers Location

for illustration purposes onlywww.turbotecproducts.com://httpImages taken from
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Solution Cycle: Solution-Refrigerant HEX Tube in Tube HEX

Coaxial titanium heat exchanger encapsulated in athermo-plastic tube.

Advantages:

Coaxial inner tubes create turbulent flowheat transferincreases.

Titanium coaxial inner tubing can withstand corrosiveand erosive environments.

Exchanges the Thermo-Plastic material and coppertubes coated by epoxy paint in the DT-Large unit


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Solution Cycle: Leak Free Environment

S l ti C l Vi l I ti f


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Solution Cycle: Visual Inspection of

Solution Level

Leak Detection

Low Liquid Detection

High Liquid Detection

Medium Level Detection

Medium Level Detection

12

6

4

S l ti C l A ti C t lli ti


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Solution Cycle: Anti Crystallization

Prevention Mechanism

S l ti C l Hi h LL P ti M h i


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Solution Cycle: High LL Prevention Mechanism

RegenerationRefrigerant

Supply

FansSystem DischargePressure

High Liquid TemperatureOnAbove Kp SetPoint

High Liquid TemperatureOffBelow Kp SetPoint

Set Point: Pressure

Process Value: Discharge Pressure

Control Value: Fan Relay


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PLC/HMI Introduction Review

Local and PLC Mode

Physical Location of HMI

Controller-Unit Topology

Sequence of Operation

Unit Functionality

Enthalpy Control

BMS Available Connectivity

DI/DO & AI/AO


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PLC/HMI Intro: LocalPLC Mode


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PLC/HMI Intro: Physical Location

Maintenance Engineer Office/

Mechanical RoomSaddle Mount


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PLC/HMI Intro: Controller-Unit Topology

PLC/HMI Intro: Sequence of Operation


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PLC/HMI Intro: Sequence of OperationStage 1

PWMSet Point: Humidity Ratio

Process Value: Supplied Air Humidity Ratio

Control Value: Compressor Modulation

PLC/HMI I t U it F ti lit


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PLC/HMI Intro: Unit Functionality

Compressor Pulse Width Modulation & Post Heat

/ f


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PWM


PLC/HMI Intro: Sequence of Operation


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PWM


Set Point: Temperature

Process Value: Supplied Air Temperature

Control Value: 4 Way Valve Solenoid

PLC/HMI Intro Unit Functionality


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PLC/HMI Intro: Unit Functionality

Compressor Pulse Width Modulation & Post Cool

PLC/HMI I t E th l C t l


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PLC/HMI Intro: Enthalpy Control


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PLC/HMI Intro: BMS Available Connectivity

Modbus RTU (485)

Modbus over TCP/IP

Modbus RTU (485) to BACnet

Modbus over TCP/IP to BACnet


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DI/DO & AI/AO


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DTRT 2500 Sensor PositioningVertical Outlet OA and RA Inlets


Type: Column Mounted

Return Air Sensor

Process Inlet

Duct Mounted

Supplied Air Sensor

Process Outlet

Duct Mounted

Outdoor Air

Sensor


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Component Monitoring

Unit Inlet/Outlet (Main Screen)


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DTRT 5000 Unit



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6xDTRT 2500 Units w/ one Controller


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Mode of operation

/


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Auto/Manual Mode


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Set Point Screen

h d l


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Schedule Screen

il d d ff f h i


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Email Transcended off of the Unit

SMS T d d ff f h U i


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SMS Transcended off of the Unit


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RCMS E il d SD C d S i F


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RCMS Email and SD Card String FormatUnit Time Date Id.HR Id.T Od.HR

MI1177 MI230 MI235 MI1178 MI1179 MI1180Excel - Unit # RTC Time RTC Date INDOOR HR INDOOR TEMP OUTDOOR HR

Od.T Out.HR Out.T In.HR In.T Cs.Pr

MI1181 MI1182 MI1183 MI1184 MI1185 MI1186OUTDOORTEMP

PROCESS OUT HR PROCESS OUT TEMP PROCESS IN HR PROCESS IN TEMP SUCTION PRESSURECOMPRESSOR

Cd.Pr DmFA.Fd DmRA.Fd Cs.Tp Cd.Tp DmFA.Ctr

MI1187 MI1188 MI1189 MI1190 MI1191 MI1192DISCHARGE

PRESSURE

COMPRESSOR

FRESH AIR

DAMPER

FEEDBACK

RETURN AIR DAMPER

FEEDBACK

SUCTION

TEMPERATURE

COMPRESSOR

DISCHARGE

TEMPERATURE

COMPRESSOR

FRESH AIR

DAMPER

CONTROL

Dc.Vv% Input Output Fault SP Tmp SP HR

MI1193 MI1194 MI1195 DW20 MI1197 MI1198DIGITAL COMPPRESSOR

DISCHARGE SOLENOID

Input Map Output Map Fault Map Setpoint Temp Set point HR

Q i ?


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Questions ?

Lifti th U it


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Lifting the Unit

Roof Top Unit Presentation Ver 17

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Transcript of Roof Top Unit Presentation Ver 17