Bryant LEGACY T2-PAC Manuale utente

Installation Instructions

T2--PAC, T2--NAC

T2--PHP, T2--NHP

LEGACYtSERIES

THERMOSTATS

A07047 A07046

Legacy Series Legacy Series

Programmable Thermostat Non--Programmable Thermostat

Designed and Assembled in the U.S.A.

NOTE: Read the entire instruction manual before starting the installation.

US patents: US20060165149 A1, USD582803 SI, USD582802 SI

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 2................................

INSTALLATION CONSIDERATIONS 4..........................

INSTALLATION 5...........................................

Step 1 — Thermostat Location 5...............................

Step 2 — Install Thermostat 5..................................

Step 3 — Set Thermostat Configuration 10.......................

Step 4 — Check Thermostat Operation 18........................

FEATURES AND ACCESSORIES 20............................

OPERATIONAL AND CONNECTION INFORMATION 22..........

WIRING DIAGRAMS 25......................................

THERMOSTAT CONFIGURATION RECORD 32..................

SAFETY CONSIDERATIONS

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,andCAUTION.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

Bryant’s LegacytSeries programmable thermostats are wall--mounted,

low--voltage thermostats which maintain room temperature by controlling the

operation of a heating and/or air conditioning system. Both heat pump and air

conditioner models are available, each in programmable and non--programmable

versions. A variety of features are provided including battery operation, separate

heating and cooling setpoints, auto changeover, keypad lockout, backlighting, and

built--in installer test. Programming features include 7--day (all days the same) and

5/2 (Mon--Fri and Sat--Sun) with 2 or 4 periods per day.

This Installation Instruction covers installation, configuration, and start--up of all

four versions of the Legacy Series line of thermostats. For operational details,

consult the Owner’s Manual for the specific thermostat you are installing.

INSTALLATION CONSIDERATIONS

Models

There are four models in the Legacy Series: programmable and non--programmable, AC

and HP. Models T2--PAC and T2--NAC are designed for AC systems, controlling one

stage of cooling and one stage of heating. They will not operate a heat pump. Models

T2--PHP and T2--NHP are designed for HP systems, controlling two stages of cooling

and three stages of heating. They can be converted to AC operation. Select the

appropriate model for the intended application.

Power

All Legacy Series models are dual powered. They can operate from batteries or

24VAC power. Operation from 24VAC is preferred if available. Battery operation is

used when there are not enough wires to support 24VAC operation or when

“armchair programming” is desired. For an AC system, up to six wires are needed

for 24VAC operation and one less wire for battery operation. For a HP system, up to

seven wires are needed for 24VAC operation and and one less wire is sufficient for

battery operation. For heat only operation with batteries, only two wires are

required. When battery operation is used, the C terminal does not need to be

connected.

Provision is also made for separate heating and cooling transformers via separable Rc

and Rh terminals which are connected via factory--installed jumper wire.

INSTALLATION

Step 1 — Thermostat Location

SApproximately 5 ft (1.5m) from floor.

SClose to or in a frequently used room, preferably on an inside partition-

ing wall.

SOn a section of wall without pipes or duct work.

Thermostat should NOT be mounted

SClose to a window, on an outside wall, or next to a door leading to the

outside.

SExposed to direct light or heat from the sun, a lamp, fireplace, or other

temperature--radiating objects which could cause a false reading.

SClose to or in direct airflow from supply registers and return--air re-

gisters.

SIn areas with poor air circulation, such as behind a door or in an alcove.

Step 2 — Install Thermostat

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or

death.

Before installing thermostat, turn off all power to equipment. There

may be more than one power disconnect.

!WARNING

1. Turn OFF all power to unit.

2. If an existing thermostat is being replaced:

a. Remove existing thermostat from wall.

b. Disconnect wires from existing thermostat, one at a time. Be careful not

to allow wires to fall back into the wall.

c. As each wire is disconnected, record wire color and terminal marking.

d. Discard or recycle old thermostat.

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental damage.

Mercury is a hazardous waste. Federal regulations require that

Mercury be disposed of properly.

CAUTION

3. Open thermostat (mounting base) to expose mounting holes. The base can

be removed to simplify mounting. Press the thumb release at the top of the

thermostat and snap apart carefully to separate mounting base from re-

mainder of thermostat.

4. Route thermostat wires through large hole in mounting base. Level mounting

base against wall (for aesthetic value only—thermostat need not be level for

proper operation) and mark wall through four mounting holes. To avoid unin-

tended bending of wall plate plastic, all four screws and anchors must be used.

See Fig. 1.

A07153

Fig. 1 -- Backplate Mounting

5. Drill four 3/16--in. mounting holes in wall where marked.

6. Secure mounting base to wall with four screws and anchors provided. To

avoid unintended bending of wall plate plastic, all four screws and anchors must

be used. Make sure all wires extend through hole in mounting base.

7. Adjust length and routing of each wire to reach proper terminal and con-

nector block on mounting base with 1/4--in. (6 mm) of extra wire. Strip only

1/4 in. of insulation from each wire to prevent adjacent wires from shorting

together when connected. See Fig. 2.

A07155

Fig. 2 -- Secure Wires to Terminal Strip

8. Match and connect equipment wires to proper terminals of the connector blocks

(see Fig. 3). If there are separate 24VAC transformers, one in the indoor unit

and one in the outdoor unit, connect the common of each to the C terminal.

Remove factory--installed jumper wire from Rc and Rh terminals. Connect the

R from the indoor unit to the Rh terminal. Connect the R from the outdoor unit

to the Rc terminal. Then the W signal is taken from the Rh power and the Y1,

Y/Y2, G and O signals are taken from the Rc power.

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