Trane CCAF Easy Interface to a Generic Building Management System, Chiller Inputs, Ice Making

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Controls

Easy Interface to A Generic Building Management System

Controlling the scroll CGWF chiller with building management systems is state- of-the-art, yet simple with either the LonTalk Communications Interface for Chillers (LCI-C) or Generic Building Management System Hardwire Points.

Simple Interface with Other Control Systems

CH530 controls afford simple interface with other control systems, such as time clocks, building automation systems, and ice storage systems. This means you have the flexibility to meet job requirements while not having to learn a complicated control system. This setup has the same standard features as a stand-alone water chiller, with the possibility of having additional optional features.

What are LonTalk, Echelon, and LonMark?

LonTalk is a communications protocol developed by the Echelon Corporation. The LonMark association develops control profiles using the LonTalk communication protocol. LonTalk is a unit level communications protocol, unlike BACNet used at the system level.

LonTalk Communications Interface for Chillers (LCI-C)

LonTalk Communications Interface for Chillers (LCI-C) provides a generic automation system with the LonMark chiller profile inputs/outputs. The inputs/ outputs include both mandatory and optional network variables. Note: LonMark network variable names are in parentheses when different from chiller naming convention.

Chiller Inputs:

•Chiller Enable/Disable

•Chilled Liquid Setpoint (Cool Setpoint)

•Compressor Inhibit

•Chiller Mode (Ice Making)

Chiller Enable/Disable

Allows for chiller to be started or stopped depending on if certain operating conditions are met.

Chilled Water Setpoint Allows for the external setting independent of the front panel setpoint to adjust the leaving water temperature setpoint.

Compressor Inhibit

Locks out the second compressor on each circuit, reducing the kW draw.

Ice Making

Provides interface with ice making control systems. Please refer to page 11 for more information.

Chiller Outputs:

•On/Off

•Active Setpoint

•Average Percent RLA

•Compressor Inhibit

•Compressor Starts

•Compressor Run Times

•Leaving Chilled Water Temperature

•Entering Chilled Water Temperature

•Evaporator Refrigerant Temperature

•Evaporator Refrigerant Pressure

•Evaporator Water Pump Request & Flow Status

•Leaving Condenser Water Temperature

•Entering Condenser Water Temperature

•Condenser Refrigerant Temperature

•Condenser Refrigerant Pressure

•Condenser Water Pump Request & Flow Status

•Outdoor Air Temperature (CCAF)

•Alarm Descriptor

•Chiller Status

Active Setpoint

Indicates the current value of the leaving water temperature setpoint

Average Percent RLA

Provides the current capacity level via %

RLA

Compressor Starts and Run Times Provides the number of starts and run time for each compressor

Alarm Descriptor

Provides alarm messages based on pre- determined criteria

Chiller Status

Indicates the running modes and states of the chiller, i.e. Running in alarm mode, chiller enabled, chiller being locally controlled, etc…

Generic Building Management System Hardwire Points

GBAS may be achieved via hardware input/output as well. The input/outputs are as follows:

Chiller Hardwire Inputs Include:

•Chiller Enable/Disable

•Circuit Enable/Disable

•External Chilled Water Setpoint

•Compressor Inhibit

•Ice Making Enable

Programmable Relays and Alarms

The unit provides seven output options, of which four can be chosen.

a)Compressor running indication b)Maximum capacity

c)Chiller limit mode

d)Warning informational diagnostic indication

e)Alarm latching shutdown diagnostic indication

f)Alarm nonlatching shutdown diagnostic indication

g)Alarm latching or nonlatching shutdown diagnostic indication

CG-PRC012-EN

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Contents Scroll Liquid Chillers Introduction Contents Easy Serviceability Features BenefitsBuild To Order Single-Source ResponsibilityOperating Torque Scroll Chiller Energy Usage SavingsInlet-First Orbit GeneralCompression-Second Orbit Discharge-Third OrbitOptions Features Benefits OptionsControls Safety ControlsHuman Interfaces Standalone ControlsChiller Hardwire Inputs Include Chiller Enable/DisableProgrammable Relays and Alarms Easy Interface to a Generic Building Management SystemAdditional Features That May Be Used Required OptionsExternal Trane Devices Required Keeping Operators Informed Energy EfficiencySwift Emergency Response Easy Documentation for Regulatory ComplianceWater Treatment Unit LocationWater Pumps Remote CondenserModel Number Description General Data Table GD-1. General data Cgwf water-cooled chillerTable GD-2. General data Ccaf compressor chiller Compressor Chiller Ccaf Selection Example Scroll Liquid Chiller Cgwf Selection ExamplePerformance DataTable PD-1 Hz Cgwf performance data in English units COP Table PD-2 Hz Cgwf performance data in Metric unitsTable PD-3 Hz Cgwf performance data in English units Table PD-4 Hz Cgwf performance data in Metric units Table PD-7 Hz Ccaf performance data in English units Table PD-8 Hz Ccaf performance data in English units Table PD-9 Hz Ccaf performance data in Metric units Part Load Figure PAF-1. Ethylene glycol performance adjustment factors Performance AdjustmentTable PAF-2. Pressure drop correction factor Chart PD-1. Cgwf evaporator Chart PD-2. Cgwf condenser Table E-1. Electrical data for Cgwf water-cooled chillers Electrical Data ConnectionsElectrical Data Connections Electrical Data Connections Field Layout Electrical Data Connections Field Layout Dimensional Cgwf 40-50 Ton Dimensional Data Ccaf 20-30 Ton Ccaf 40-60 Ton Weights Table W-1. Weights, Cgwf chillersTable W-2. Weights, Ccaf compressor chillers Mechanical Specifications Starter Trane

CCAF, CGWF specifications

The Trane CGWF and CCAF series are notable advancements in the field of commercial air conditioning and heating solutions. Designed to provide efficient climate control, these units are favored for their reliability, energy efficiency, and innovative technologies.

The Trane CGWF series is characterized by its water-cooled chiller design, making it suitable for a variety of commercial applications. Its primary feature is the use of the eco-friendly refrigerant R-134a, which not only minimizes environmental impact but also complies with evolving regulations regarding refrigerants. The CGWF models are equipped with high-efficiency scroll compressors, which contribute to reduced energy consumption while ensuring optimal performance.

The Series also boasts a range of cooling capacities, making it adaptable to various building sizes and requirements. The intelligent control systems embedded within the CGWF units allow for precise monitoring and adjustment of temperature settings, contributing to stable indoor conditions. Additionally, these chillers feature a robust construction that enhances durability, ensuring long-life service in demanding environments.

On the other hand, the Trane CCAF series reflects an advanced approach to air handling. These units are built with focus on energy efficiency as well, featuring the latest in variable frequency drive (VFD) technology. VFDs enable the system to adjust motor speed according to load requirements, resulting in significant energy savings and lower operational costs. The CCAF series also incorporates advanced filtration options, which improve indoor air quality by ensuring that particulates and contaminants are effectively removed from the air.

A notable characteristic of the CCAF models is their modular design, allowing for easy installation and maintenance. The plug-and-play configuration simplifies the setup, accommodating various spaces without requiring extensive modifications. Furthermore, both the CGWF and CCAF series support connectivity with advanced building management systems, facilitating real-time monitoring and control through smart technology.

In summary, the Trane CGWF and CCAF units stand out for their exceptional efficiency, cutting-edge technology, and flexibility in application. Their design and features reflect a commitment to sustainability and innovation, making them a compelling choice for businesses looking to optimize their HVAC systems while meeting contemporary environmental standards. With Trane’s reputation for quality and reliability, these series are trusted solutions for commercial climate control needs.
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