Bryant PREFERREDT A07044 Manuale utente

Installation Instructions

T6--PRH, T6--NRH

PREFERREDtSERIES

THERMIDISTAT

A07045 A07044

Programmable Control Non---Programmable Control

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

TABLE OF CONTENTS

PAGE

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

INTRODUCTION 3..............................................

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

INSTALLATION 8...............................................

SYSTEM START--UP AND CHECKOUT 40..........................

OPERATIONAL INFORMATION 51................................

TROUBLESHOOTING 54.........................................

WIRING DIAGRAMS 58..........................................

THERMIDISTAT CONFIGURATION RECORD 78.....................

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 ThermidistattControl.

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 7--day, 5/2--day, 1--day programmable and non--programmable

Preferred Series Thermidistat Control is a wall--mounted, low--voltage control

which combines temperature and humidity control in either a single unit or a

two--piece unit. In two--piece configuration, the relays are located near the

equipment and a two--wire connection is used between the Display Module and

the Equipment Control Module. Single--piece installation requires more wiring

and results in a higher profile. The Preferred Series Thermidistat has no need for

batteries to store user--configured settings in memory. During power loss its

internal memory saves settings for unlimited time, and the clock continues to run

for at least 24 hours. An extension of Bryant’s proven line of thermostats; it

provides separate setpoints for heating and cooling in addition to humidification

and dehumidification.

In the Preferred Series Thermidistat Control’s programmable configuration,

different heating and cooling setpoints and times are programmable for 4 periods

per day or 2 periods per day. Programming can be done for 7 days per week, 5/2

days per week, or 1 day. The programmable Thermidistat Control can also be

user configured as a non--programmable Thermidistat Control. When operating

as non--programmable, the Thermidistat Control will still have both temperature

and humidity control.

The non--programmable Thermidistat Control features Touch ’N’ Gotsettings

for quick and easy temperature change without complicated programming

schedules. The non--programmable Thermidistat Control will still have both

temperature and humidity control. And, its Touch ’N’ Go technology enables the

user to switch between three different user--configurable settings through

intuitive buttons located just below the display.

INSTALLATION CONSIDERATIONS

Power

This control is powered by 24VAC only. It requires 24VAC (Rh and/or Rc and C

terminals) of the low--voltage transformer to be connected to it for proper

operation. It will not operate without these 2 connections. Rh and Rc are

connected via PCB breakout jumper. See Fig. 1. For applications using two

24VAC transformers, one in the indoor unit and one in the outdoor unit, connect

the common from each to the C terminal. Connect R from the indoor unit to the

Rh terminal. Connect R from the outdoor unit to the Rc terminal. Then, break

jumper on the circuit board. The W and HUM signals are taken from the Rh

power and the G signal is taken from the Rc power. If Thermidistat Control has

been installed in a two--transformer application that is later changed to a

single--transformer installation, installer must install a field supplied jumper

between Rc and Rh. Depending on the installation, up to 14 wires may be

required. Installation as two--piece unit is recommended. Only 2 wires are

required for connection between Display Module and Equipment Control

Module. These two wires (V+ and Vg) do not provide ordinary 24VAC. They

carry a combination of power and communications data that is unique to these

products.

A07052

Fig. 1 -- PCB Breakout Jumper

Models

There are programmable and non--programmable models for all applications.

They can be configured for AC or HP, 1--or 2--speed compressor, and for Hybrid

Heattinstallations, allowing it to be used in place of all Bryant thermostats.

Programmable Thermidistat Controls may be configured as non--programmable

if user desires.

Humidify Equipment and Connections

The humidify output connects directly to 24VAC operated humidifiers. No other

connection or interlock is required. Any of several installer--selectable operating

modes are available.

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

DO NOT connect furnace HUM terminal directly to Thermidistat Control

HUM terminal. This will bypass furnace safety controls. See Low Voltage

Wiring Diagrams and notes for proper connection.

!WARNING

Dehumidify Equipment and Connections

The dry contact output connects to the dehumidify input on variable--speed

furnaces and fan coils. Additional dehumidification is done by controlling the

compressor. A variety of operating modes are available. The dry contact must be

configured for dehumidification in setup Option 19. See Wiring Diagrams for

more information.

Outdoor Temperature Sensor

Outdoor air temperature sensor is included in the box with the Thermidistat

Control. Optimum performance is obtained when an outdoor temperature sensor

is used with the Thermidistat Control. Plan installation so that 2 wires can be run

from Equipment Control Module to an outdoor location, preferably on the north

side of the house or refer to Installation Instructions included with the outdoor

temperature sensor for simplified connection. Sensor can be mounted to outdoor

unit and existing control wires may be used for its connection. Details are

provided in sensor instructions.

Remote Indoor Temperature Sensor

A remote temperature sensor may be used with the programmable model, where

it is desirable to install the Thermidistat Control in a limited access location while

measuring the temperature in the living space. The remote room sensor may be

used as a stand alone or average with local sensor.

Two--Piece Thermidistat Configuration

The Preferred Series Thermidistat Control can be installed in one of two

configurations. The control may be installed as a single--piece Thermidistat or it

may be split into two pieces and mounted in separate locations. As a single--piece

unit, all required wiring must be brought to the Equipment Control Module for

connection to the terminal strip. In two--piece configuration, the Display Module

can be mounted in the living space while the Equipment Control Module may be

mounted near the indoor furnace or fan coil. Connection from the display to the

Equipment Control Module requires only two wires. All other control wires are

connected to the Equipment Control Module from the HVAC equipment. This

configuration results in a slimmer display and locates the Equipment Control

Module containing the switching relays away from the main living space where

relay clicking will not be heard.

INSTALLATION

Carton contains the following components. See Fig. 2 for T6--PRH or Fig. 3 for

T6--NRH.

A07752

Fig. 2 -- T6--PRH Carton Contents

1. Display Module

2. Stand--off for Equipment Control Module

3. Outside Air Temperature Sensor, screws and pigtail.

4. Equipment Control Module

A07753

Fig. 3 -- T6--NRH Carton Contents

1. Display Module

2. Stand--off for Equipment Control Module

3. Outside Air Temperature Sensor, screws and pigtail.

4. Equipment Control Module

Thermidistat Control Location

Thermidistat Control should be mounted:

SApproximately 5 ft (1.5m) from floor.

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

tioning wall.

SOn a section of wall without pipes or duct work.

Thermidistat Control 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 a lamp, sun, fireplace, or other

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

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

ters.

SIn areas with poor air circulation, such as behind a door or in an al-

cove.

Installer should determine whether control will be installed as single--piece or

two--piece. In single--piece configuration, as many as 14 wires may need to run

to wall mounting location for connection to the control. In two--piece

configuration, the Display Module and Equipment Control Module are

connected by two wires.

Install Thermidistat Control

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury

or death.

Before installing Thermidistat Control, turn off all power to

equipment. There may be more than 1 power disconnect.

!WARNING

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