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RCS ZC2S User Manual

RCS ZC2S
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RCS
MODEL ZC2S
2 ZONE HVAC CONTROL UNIT
INSTALLATION AND OPERATION MANUAL
DCN 141-00240-02
7/25/03
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RCS ZC2S Specifications

General IconGeneral
ManufacturerRCS
ModelZC2S
CategoryControl Unit
Current Rating2A
Input Voltage24 VDC
Output Voltage24 VDC

Summary

Introduction and System Overview

Thermostats for use with the ZC2S

Details compatible electronic thermostats and cautions against power-stealing models for proper system function.

Zone Dampers for use with the ZC2S

Specifies requirements for motorized dampers, including type, voltage, and current ratings for reliable operation.

HVAC Systems Compatibility

Outlines compatibility with standard residential gas/electric HVAC systems and lists supported heating/cooling stages.

Core Operational Features

Thermal Equalizer Feature

Explains the patented feature designed to reduce heat stratification in multi-story homes by balancing air distribution.

Short Cycle Protection Delay

Describes the built-in 5-minute delay to prevent compressor damage from rapid on/off cycling.

Status LED

Details the LED flash patterns indicating normal operation, equalizer cycle, and short cycle protection status.

Installation and Wiring

Wiring and Power

Details thermostat/damper wiring, controller power sourcing, and fuse specifications.

Thermostat Wiring

Illustrates connecting zone thermostats to control unit terminals, including power and signal connections.

Configuration and Integration

HVAC System Wiring

Provides a diagram showing how the ZC2S control units connect to standard HVAC mechanical systems.

Control Unit Setup: Dipswitch Settings

Explains the dipswitch settings for test mode, fan mode selection, and Thermal Equalizer timing.

Advanced Configuration Options

SW1 Positions 5& 6: Thermal Equalizer Heat Run Time Mode Select

Details how to set the heat run time thresholds that activate the Thermal Equalizer cycle for optimal comfort.

System Diagrams and Settings Summary

Wiring Diagram

Presents a comprehensive visual guide for wiring thermostats, control unit, HVAC system, and dampers.

Status LED

Summarizes the LED flash codes for monitoring system status, including normal operation and protection modes.

Short Cycle Protection (SCP) Delay

Reiterates the compressor protection delay and its indication via the status LED.

Dipswitch Settings

Consolidates dipswitch configurations for test mode, fan selection, equalizer mode, and heat run time settings.