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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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Table of Contents
Related Manuals for Carrier HCQ
Summarization of Contents
Supplement Index
Title 24 EconoMi$er 2 Overview
Details Title 24 requirements for EconoMi$er 2, including FDD and prescriptive sections.
Title 24 EconoMi$er X Overview
Details Title 24 requirements for EconoMi$er X, focusing on electro-mechanical controls.
Safety Considerations
Electrical Shock Hazard Warning
Warning about potential personal injury or death from electrical shock during service.
Cut Hazard Warning
Caution regarding sharp metal edges and the need for protective gear during servicing.
W7220 Economizer Module
Product Description
Details the W7220 Economizer Module as an expandable control system with LCD and keypad.
System Components
Lists the key components of the EconoMi$er X system, including the module and sensors.
W7220 Economizer Module Specifications
Installation Precautions
Important considerations and steps before and during the installation of the W7220 module.
Installation and Setup
Economizer Module Wiring Details
Information on wiring details for the economizer module and its sensors.
W7220 Economizer Module Wiring
Specific instructions and diagrams for wiring the W7220 economizer module.
S-Bus Sensor Wiring
CO2 Sensor Wiring
Details on wiring the CO2 sensor for Demand Control Ventilation.
Interface Overview
Explanation of the economizer's user interface, including keypad navigation and menu structure.
User Interface and Navigation
Menu Structure and Setup
Outlines the menu hierarchy and the process for setting up the economizer system.
Enthalpy Settings
Two-Speed Fan Operation
Describes how the W7220 controller interacts with a 2-speed supply fan system.
Checkout Procedures
Power Up and Initial Display
Instructions for applying power to the module and what to expect on the initial display.
Electrical Hazard During Checkout
Warning regarding electrical hazards during power up and checkout procedures.
Troubleshooting
Alarms
Explains how the economizer module displays and manages alarm messages.
Clearing Alarms
Steps to clear identified and resolved alarms from the economizer module display.
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