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Factory---Installed Economizers
for
TC/TCQ/HC/HCQ/LC/KC/KCQ
Rooftop Units
3 to 27.5 Nominal Tons
Economizer Supplement Related To
California's new Title 24 is effective July 1, 2014 and requires several new
economizer features.
This supplement details these economizer updates and is to be used in
conjunction with the base unit installation instructions for the following
3 to 27.5 nominal ton models: TC/TCQ/HC/HCQ/LC/KC/KCQ.
Supplement Index:
S EconoMi$er 2 DDC Title 24 offerings and definitions
NOTE: Wiring diagrams and instructions do not change.
S EconoMi$er X Title 24 electro- -mechanical offerings and definitions
This includes set up, start up and menu structure information.
Title 24 Note: Because the economizer factory- -installed in the unit is Title 24 listed by the
California Energy Commission (CEC), field economizer commissioning is not required.
California Title 24
. . . . . . . . . . . . . . . . .
. . .
Pages 3- -24
Page 2
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Related Manuals for Carrier HC
Summarization of Contents
California Title 24 Economizer Supplement
Factory-Installed Economizers for Rooftop Units
Details economizers for specific Carrier rooftop unit models.
EconoMi$er X Electro-Mechanical Controls Supplement
EconoMi$er X Title 24 Section 120.2 FDD
EconoMi$er X system meets mandatory FDD requirements for Title 24.
EconoMi$er X Title 24 Section 140.4 Prescriptive
EconoMi$er X with Ultra Low Leak dampers meets prescriptive Title 24 requirements.
Safety Considerations and Warnings
Electrical Shock and Cut Hazard Warnings
Critical warnings for electrical shock and cut hazards during installation and service.
W7220 Economizer Module Overview
W7220 Economizer Module Product Description
Details the W7220 module as an expandable control system with LCD and keypad.
EconoMi$er X System Components
Lists components of the EconoMi$er X system: module, sensors, actuators.
W7220 Economizer Module Specifications
W7220 Module Inputs, Outputs, and Environmental Specs
Details module inputs, outputs, actuator signals, and environmental specifications.
Economizer Module Wiring Details
W7220 Module Terminal Connections
Details wiring connections for the W7220 module using tables and figures.
S-Bus Sensor Wiring and Configuration
CO2 Sensor Wiring for DCV
Wiring diagram and notes for connecting a CO2 sensor for Demand Control Ventilation.
W7220 Controller User Interface
Keypad Navigation and Operation
Explains the function of the four navigation buttons for menu and settings.
W7220 Economizer Menu Structure
Overview of the hierarchical menu structure for the EconoMi$er X system.
Menu Structure and Parameters
W7220 Status and Setpoints Menu Parameters
Details parameters for STATUS and SETPOINTS, including economizer availability and temperature.
System and Advanced Setup Parameters
W7220 System Setup Parameters
Covers installation, units, equipment type, fan speed, and airflow settings.
W7220 Advanced Setup Parameters
Details advanced setup parameters for temperature calibration and freeze protection.
Checkout and Operational Tests
W7220 Checkout Tests
Details tests for damper position, Y1-0, Y2-0, and AUX1-O outputs.
Troubleshooting Alarms
Clearing Alarms on W7220
Steps to clear identified alarms from the economizer module display.
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