Carrier TC User Manual

Factory---Installed Economizers
for
TC/TCQ/HC/HCQ/LC/KC/KCQ
Rooftop Units
3to27.5NominalTons
Economizer Supplement Related To
California Tit le 2 4
California’s new Title 24 is effective July 1, 2014 and requires several new
economizer features.
This sup plement details these economizer upd ates and is to be us ed in
conjunction with the base unit installation instructions for the following
3 to 27.5 n omina l ton models : TC/TCQ /HC/HCQ/LC/KC/KCQ.
Supplement Index:
S EconoMi$er 2 DDC Title 24 offerings and definitions Page 2.................
NOTE: Wiring diagrams and instructions do not change.
S EconoMi$er X Title 24 electro--mechanical offerings and definitions Pages 3--24...
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.

Carrier TC Specifications

General

Brand	Carrier
Model	TC
Category	Air Conditioner
Language	English

Summary

California Title 24 Economizer Overview

EconoMi$er 2 DDC Title 24 Offerings

Details DDC economizer features and definitions for Title 24 compliance.

EconoMi$er X Electro-Mechanical Title 24 Offerings

Details electro-mechanical economizer features and definitions for Title 24 compliance.

EconoMi$er 2 Title 24 Compliance Details

Mandatory Section 120.2 FDD Requirements

Explains FDD requirements and Carrier control systems meeting them.

Prescriptive Section 140.4 Requirements

Covers prescriptive requirements like damper leakage and warranty.

EconoMi$er X Title 24 Compliance Details

Mandatory Section 120.2 FDD for EconoMi$er X

Details FDD requirements for EconoMi$er X systems.

Prescriptive Section 140.4 for EconoMi$er X

Discusses prescriptive requirements for EconoMi$er X, like damper leakage.

General Safety Considerations

Electrical Shock and Cut Hazard Warnings

Warns of shock hazard during service and sharp edges on sheet metal parts.

W7220 Economizer Module Introduction

Product Description and System Components

Overviews the W7220 module, its expandable system, and core components.

W7220 Economizer Module Specifications

Electrical, Input, Output, and Environmental Specs

Details the module's electrical, sensor input, output, and environmental specifications.

W7220 Economizer Module Wiring Diagrams

Terminal Block Connections (Left and Right)

Illustrates and describes terminal block connections for the economizer module.

Sensor Wiring and Interface Overview

S-Bus and CO2 Sensor Wiring Procedures

Guides on wiring S-Bus and CO2 sensors to the W7220 controller.

User Interface Navigation and Operation

Explains how to navigate and operate the economizer's user interface.

User Interface and Keypad Operation

Keypad Functions and Menu Navigation

Details the functions of the 4-button keypad for menu navigation.

Menu Structure and Parameters

Outlines the hierarchy of menus and available parameters for the system.

Setup and Configuration Process

Initial Setup and Configuration Steps

Provides instructions for the initial setup and configuration of the economizer module.

Economizer Control Strategies

Enthalpy Settings and Boundary Curves

Explains enthalpy settings and how boundary curves are used for economizing.

Two-Speed Fan Operation Integration

Details the W7220's integration with two-speed supply fan systems.

Checkout, Power Up, and System Status

Checkout Procedures and Power Management

Guides on performing checkout tests and managing power status.

Power Up, Initial Display, and Status Checks

Covers initial power-up, display sequence, and checking system status.

Troubleshooting and Alarm Management

Alarm Messages and Clearing Procedures

Explains alarm messages and the process for clearing them.