Safety Considerations

T1-PAC

T1-PHP

LEGACY LINE-RNC

PROGRAMMABLE THERMOSTATS

Installation Instructions

A07109

Legacy Line-RNC Series Programmable Thermostat

NOTE: Read the entire instruction manual before starting the installation

	TABLE OF CONTENTS
		PAGE
SAFETY CONSIDERATIONS		. . . 1
INTRODUCTION		. . . 1
INSTALLATION CONSIDERATIONS		. . . 1
INSTALLATION		. . . 1
Step 1 — Thermostat Location		. . . 1
Step 2	— Install Thermostat	. . . 2
Step 3	— Set Thermostat Configuration	. . . 2
Step 4	— Understand Thermostat Operation	. . . 2
Step 5	— Check Thermostat Operation	. . . 3
WIRING DIAGRAMS		. . . 4

Read and follow manufacturer instructions carefully. Follow all local electrical codes during installation. All wiring must conform to local and national electrical codes. Improper wiring or installation may damage thermostat.

Recognize safety information. This is the safety-alert symbol . When you see this symbol on the equipment and in the instruction manual, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used

to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

INTRODUCTION

There are two Legacy Line-RNC Series programmable thermostat models, one for AC applications and one for HP applications. Both are dual powered, operating from either 24VAC or two alkaline

AAbatteries. Configuration and program schedules are stored in non-volatile memory, preserving this information during power loss and battery removal. Features include simplified 5/2 programming, large backlit display, and modern styling.

The AC model provides one stage of heating and one stage of cooling.

The HP model provides two stages of heating and one stage of cooling.

INSTALLATION CONSIDERATIONS

AC Operation

For 24VAC operation, both the R and C wires must be connected to the 24VAC power source. Batteries are not needed.

Battery Operation

When batteries are used, the common (C) connection is not needed, saving a wire, and eliminating 24VAC operation. The thermostat continues to operate in the event of a power failure. Battery life is expected to be one year. A “low battery” reminder tells the homeowner when it is time to replace the batteries. When connected without the common wire, the thermostat will not operate without batteries. Continuous back-lighting is not available.

Both Battery and AC Operation

If both batteries and 24VAC operation are used (batteries installed and the common wire connected), and indefinite clock operation are provided, the battery will be used only during AC power loss, extending battery life to nearly its shelf life.

A jumper has to be properly set for backlight operation. J2 should be set in the “AC” position when the thermostat is operated from 24VAC. J2 should be set in the “BAT” position when the thermostat is operated from batteries. The thermostat will continue to operate if J2 is not in the correct position or not connected. However, the backlight will not operate.

INSTALLATION

Step 1 — Thermostat Location

Thermostat should be mounted:

SApproximately 5 ft (1.5m) from floor.

SClose to or in a frequently used room, preferably on an inside partitioning wall.

SOn a section of wall without pipes or duct work.