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Self-Contained Interoperable Controller Model UCP-1
SUPERSEDES: September 1, 2010
CCU1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Purpose of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . 3
Representations and Warranties . . . . . . . . . . . . . . . . . 3
Applicable Documentation . . . . . . . . . . . . . . . . . . . . . . 4
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 5
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Static Electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FCC Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Before Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About this Document . . . . . . . . . . . . . . . . . . . . . . . . 5
Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . 6
What is Not Included with this Equipment . . . . . . . . 6
Equipment Location . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selecting a Power Source . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . 6
Routing Cabling to the Device . . . . . . . . . . . . . . . . . 7
Grounding the Device . . . . . . . . . . . . . . . . . . . . . . . 7
Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting Input Devices . . . . . . . . . . . . . . . . . . . 10
Connecting Output Devices . . . . . . . . . . . . . . . . . . 11
Other Connections . . . . . . . . . . . . . . . . . . . . . . . . . 11
© 2010 Taco Electronic Solutions, Inc.
Application Guide
CCU1 Chiller Controller
Table of Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Application Description. . . . . . . . . . . . . . . . . . . . . . . . . 14
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . 16
Chiller Activation . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chiller Setpoint Adjustment . . . . . . . . . . . . . . . . . . 16
Chiller Pump Control . . . . . . . . . . . . . . . . . . . . . . . 16
Condenser Pump Control . . . . . . . . . . . . . . . . . . . 16
Cooling Tower Bypass Valve Control . . . . . . . . . . 16
Cooling Tower Variable Speed Fan Control . . . . . 17
Chiller Low Limit Control . . . . . . . . . . . . . . . . . . . . 17
Chiller Alarm Status . . . . . . . . . . . . . . . . . . . . . . . . 18
Runtime Accumulations . . . . . . . . . . . . . . . . . . . . . 18
Alarms and Events . . . . . . . . . . . . . . . . . . . . . . . . 18
Automatic Configuration . . . . . . . . . . . . . . . . . . . . 19
Networking Controllers . . . . . . . . . . . . . . . . . . . . . 19
Controller Identification . . . . . . . . . . . . . . . . . . . . . . . . 20
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
All Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . 26
505-022
EFFECTIVE: September 23, 2010
1
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Related Manuals for iWorX CCU1
Summary of Contents for iWorX CCU1
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Page 1: Table Of Contents
CCU1 ........3... - Page 2 CCU1 THIS PAGE LEFT BLANK INTENTIONALLY 505-022, Effective: September 23, 2010 © 2010 Taco Electronic Solutions, Inc.
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Page 3: Ccu1
The CCU1 incorporates digital outputs in the form of triacs for chiller low limit status and the start and stop of the chiller and condenser pumps. In addition, three analog outputs are provided to control a modulated bypass valve, a variable speed fan, and set the adjustable setpoint of the chiller. -
Page 4: Applicable Documentation
CCU1 The iWorX CCU1 shall only be used for the applications identified in the product specifications and for no other pur- poses. For example, the iWorX CCU1 is not intended for use to support fire suppression systems, life support systems, critical care applications, commercial aviation, nuclear facilities or any other applications where product failure could lead to injury to person, loss of life, or catastrophic property damage and should not be used for such purposes. -
Page 5: Installation Instructions
United States. BEFORE INSTALLING About this Document The instructions in this manual are for the CCU1 module, which supports one central plant consisting of one air-cooled chiller or one water-cooled chiller with cooling tower. 505-022, Effective: September 23, 2010... -
Page 6: Inspecting The Equipment
CCU1 Inspecting the Equipment Inspect the shipping carton for damage. If damaged, notify the carrier immediately. Inspect the equipment for damage. Return damaged equipment to the supplier. What is Not Included with this Equipment • A power source for the equipment electronics and peripheral devices. -
Page 7: Routing Cabling To The Device
CCU1 Figure 1: Mounting Dimensions Routing Cabling to the Device Cabling used to connect the power source and cabling used to connect the FTT-10A network must remain separated within the control enclosure and wiring conduit. Grounding the Device The ground terminal (T40) must be securely connected to earth ground. Failure to properly ground this equipment will result in improper operation. -
Page 8: Wiring Information
CCU1 WIRING INFORMATION WARNING: Terminals 6, 9, 12, 15, 18, 33, 36, and 38 are connected internally on all CCU1 controllers. Disconnect ALL power sources when installing or servicing this equipment to prevent electrical shock or equipment damage. Figure 2: Wiring Diagram for Power Sourcing applications 505-022, Effective: September 23, 2010 ©... - Page 9 CCU1 Figure 3: Wiring Diagram for Power Sinking applications 505-022, Effective: September 23, 2010 © 2010 Taco Electronic Solutions, Inc.
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Page 10: Connecting Input Devices
CCU1 Figure 4: Wiring Diagram for Power Isolated applications Connecting Input Devices Chiller Water Supply Temperature (CWS) To connect the chiller water supply thermistor to the unit, attach one wire from the thermistor to CWS (T19) and the other wire to the adjacent common (T18). The thermistor used must be a 10K Precon Type III. -
Page 11: Connecting Output Devices
CCU1 Chiller Flow Proof (CFP) To connect the chiller flow proof switch to the digital input, attach one wire of the contact to CFP (T13) and the other wire to the adjacent common (T12). This must be a dry contact, normally open switch which closes when flow is detected. -
Page 12: Specifications
CCU1 Ground (GND) Terminal GND (T40) must be connected to earth ground. Failure to properly ground this equipment will result in improper operation. Improper grounding may also increase the risk of electrical shock, and may increase the possibility of interference with radio and TV reception. -
Page 13: Mechanical
CCU1 Mechanical Housing • Dimensions: 5.55” (141mm) high, 6.54” (166 mm) wide, 1.75” deep (44 mm) • ABS Weight • Controller Weight: 0.70 pounds (0.32 kilograms) • Shipping Weight: 1.0 pounds (0.46 kilograms) Electronics • Processor: 3150 Neuron 10 MHz •... -
Page 14: Application Description
Temp. CCU1 control starts only if there is a cooling water demand and the outside air temperature (OAT) is above the OAT limits --> Cutoff temp. The CCU1 operates in conjunction with up to 60 controllers that can require chilled water (FCU Series, DXU Series, HPU Series). - Page 15 1 °F above the low limit setpoint. A digital input is provided on the CCU1 to monitor the status of the chiller's general alarm. An alarm is reported to the LCI when the chiller reports a general alarm condition.
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Page 16: Sequence Of Operation
Chiller Activation CCU1 control starts only if there is a cooling water demand and the OAT acquired from the network via an auxiliary sensor module (ASM) is above the OAT limits -> Lockout temp. The CCU1 operates in conjunction with up to 60 con- trollers that can require chilled water (FCU series, DXU series, HPU series). -
Page 17: Cooling Tower Variable Speed Fan Control
The CCU1 provides low limit control. When the outside air temperature drops below the low limit setpoint as sensed by the ASM on the network, the CCU1 energizes the chiller low limit output and starts the chilled water pump. The chiller low limit output is interfaced to the factory supplied chiller controls to signal the chiller to not start in response to the chilled water pump operation in the low limit condition. -
Page 18: Chiller Alarm Status
If both chiller pumps fail, all outputs are turned off, all control stops, and a dual pump failure alarm is generated. Manual reset of the CCU1 controller from the operator interface or by cycling power to the CCU1 is required to restart control. -
Page 19: Automatic Configuration
Once the service pin has been pressed, no further action is required by the user; the controller is fully accessible to the LCI. Users may bind to SNVTs on the CCU1 with LNS or other L ORKS tools if they wish. -
Page 20: Controller Identification
CONTROLLER IDENTIFICATION Once the CCU1 is properly installed and recognized by the Local Control Interface (LCI), the LCI can be used to con- figure the settings of the controller. This section describes the commands available on the LCI for configuration of the CCU1, and the meanings and default values for controller parameters. -
Page 21: All Settings
CCU1 All Settings This screen displays all settings used by the CCU1 controller and provides access to edit all the parameters from a sin- gle screen. Setting Range Default Description Chiller Enable Auto, On Auto Auto: Chiller will follow the cooling demand set by other controllers. - Page 22 CCU1 Runtime Limits Enables the user to view and set parameters directly related to the runtime limits for maintenance alarms. Setting Range Default Description Chiller 0 to 65535 hours 1000 hours Chiller runtime after which a main- tenance alarm is generated.
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Page 23: Alarms
CCU1 Cond Alm Temp Limits (Condenser Temperature Limits for Alarm) Enables the user to view and set parameters directly related to the condenser temperature alarm limits. Setting Range Default Description Min Supply Temp 32.00 to 140.00 °F 43.0 °F (6.1 °C) Condenser supply temperature below (0.00 to 60.00 °C) - Page 24 CCU1 Alarm Range Alarm Trigger Alarm Reset Condenser Pump 2 Failed Normal, Alarm If condenser pump 2 fails. Automatic unless there is a Dual Pump Failure; See Dual Pump Fail- ure. Dual Pump Failure Normal, Alarm If both pumps fail.
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Page 25: Troubleshooting
– Green when there is network activity – Off when there is no network activity Service – Illuminated when the service pin is depressed or when a controller gets configured by the LCI. Figure 7: CCU1 Controller LEDs Status Network Service 505-022, Effective: September 23, 2010... -
Page 26: Troubleshooting Tips
Getting Help Components within an iWorX CCU1 controller cannot be field repaired. If there is a problem with a controller, follow the steps below before contacting your local TES representative or TES technical service. 1.Make sure controllers are connected and communicating to desired devices. - Page 27 Taco Electronic Solutions, Inc. is a subsidiary of Taco, Inc. Visit our web site at: http://www.taco-hvac.com Printed in the USA iWorX and iView are trademarks of Taco, Inc. © 2010 Taco Electronic Solutions, Inc. LON, LONWORKS, & LONMARK are trademarks of Echelon Corporation...
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