RCS TBZ48A User Manual

DCN: 140-02121-02 Page 1
Installation Guide
Model TBZ48A
Battery Powered Z-Wave Thermostat
This thermostat is compatible with most HVAC systems, including the following:
 24VAC systems Note: requires both the R and C wires unless battery powered.
 Standard gas/oil/electric heating systems
o 1 stage heating and cooling
o 2 stage heating and cooling
 Heat Pump systems:
o 1 stage heating and cooling
o 2 stage heating and cooling
o 2
nd
or 3
rd
stage Auxiliary heating (heat strips)
 Do NOT use for line voltage controls (120/240VAC)
Replacing an existing Thermostat
Stop! Before disconnecting wires from the existing thermostat, label
the wires with the terminal markings from the old thermostat and record
them below. Take a picture…it will be very helpful with troubleshooting or
if you need to reinstall the old unit.
Read all instructions before starting installation.
Standard HVAC System Wiring
Terminal
Marking
Meaning
Typical Wire Color
Record the old thermostat wire
connections and terminal
marking here
C
24VAC Common
Blue
R(RH,RC)
24VAC Return
Red
G
Fan
Green
W or W1
Heat stage 1
White
Y or Y1
Cool stage 1
Yellow
W2
Heat stage 2
Orange
Y2
Cool stage 2
Black
Heat Pump HVAC System Wiring
Terminal
Marking
Meaning
Typical Wire Color
Record the old thermostat wire
connections and terminal
marking here
C
24VAC Common
Blue
R
24VAC Return
Red
G
Fan
Green
W or W1
Aux Heat
White
Y or Y1
Compressor stage 1
Yellow
O (or B*)
Change Over Valve
Orange (brown*)
Y2
Compressor stage 2
Black
* if you have a terminal marked “B” with a brown wire attached to it, that means you have a
changeover (CO) with heating type heat pump system. Be sure to set the change over
type in the SYSTEM menu to CO type: H (heat). Otherwise leave it set to C (cool).
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RCS TBZ48A Specifications

General

Manufacturer	RCS
Model	TBZ48A
Power Supply	24VAC
Display	LCD
Programmable	Yes
Hold Function	Yes
Fan Control	Yes
Battery Backup	Yes
Type	Thermostat
Compatibility	Z-Wave

Summary

Thermostat Installation Guide

Replacing an Existing Thermostat

Instructions for safely replacing your current thermostat with the new unit.

Thermostat Power and System Setup

Thermostat Power Options

Details on using battery power versus 24VAC power for the thermostat.

HVAC System Configuration

Configuring the thermostat for correct HVAC system type and operation.

Thermostat Menu Navigation and Settings

Selecting Menu Options

Guide to accessing various settings and information menus on the thermostat.

Changing HVAC Default Settings

How to modify the thermostat's default HVAC system configuration.

System Menu and Advanced Configuration

System Menu Overview

Setup options for HVAC system type, fan type, and changeover valve.

Advanced System Settings Access

Accessing advanced settings for system operation, for qualified installers.

Advanced Thermostat Settings

Display Lock and Auxiliary Heat

Settings for locking thermostat buttons and enabling auxiliary heat.

Stage Enable and Setpoint Deltas

Configuring stage operations and temperature separation (deltas).

Advanced Operational Settings

Setpoint Limits and Run Times

Setting maximum/minimum setpoints, minimum run, and off times.

Test Mode and Defaults

Using test mode for diagnostics and restoring factory defaults.

Changeover Valve and Z-Wave Intro

Changeover Valve Type Configuration

Setting the changeover type for heat pump systems.

Z-Wave Network Installation Overview

Introduction to installing the thermostat on a Z-Wave network.

Standard System Wiring and Setup

Standard Gas/Electric Wiring Diagram

Diagram for connecting a standard gas/electric HVAC system.

Standard System Setup Configuration

Configuration steps for standard systems via the SYSTEM menu.

Heat Pump Wiring and Setup

Heat Pump Wiring Diagram

Diagram for connecting a heat pump HVAC system.

Heat Pump System Setup Configuration

Configuration steps for heat pump systems via the SYSTEM menu.

Thermostat Display and Basic Operation

Main Screen and Indicators

Overview of the main thermostat screen and its indicators.

Backlight and Button Functionality

How the backlight and button presses function.

System Modes and Emergency Heat

Setting System Operating Modes

How to select between Off, Heat, Cool, and Auto modes.

Emergency Heat Mode Explanation

Using the special Heat-E mode for emergencies.

Setting Temperature Setpoints

Adjusting Heating and Cooling Setpoints

Adjusting temperature setpoints and understanding setpoint push behavior.

Fan Mode Operation

Selecting Fan Operation Mode

Choosing between Auto and On fan modes.

Thermostat Menu Navigation and Options

Accessing Thermostat Menu

Steps to enter the thermostat's menu mode.

Menu Options Overview

List of available menus: SETUP, INFO, CLOCK, ZWAVE, SYSTEM.

Detailed Menu Settings

SETUP and INFO Menu Details

User preference settings and thermostat information display.

CLOCK, ZWAVE, and SYSTEM Menu Details

Settings for time, Z-Wave network, and HVAC system configuration.

Operational Parameters: MRT and MOT

Minimum Run Time (MRT) Setting

Understanding and setting the minimum time the system runs per cycle.

Minimum Off Time (MOT) Setting

Understanding and setting the minimum off time between cycles for compressor protection.

Z-Wave Network Inclusion

Installing TBZ48A into Z-Wave Network

Step-by-step guide for including the thermostat in a Z-Wave network.

Z-Wave Network Exclusion

Removing TBZ48A from Z-Wave Network

Steps for excluding the thermostat from a Z-Wave network.

Regulatory Compliance

FCC and IC Compliance Statements

Information regarding FCC and Industry Canada compliance statements.