Lennox X4147 Manual de usuario

E2007 Lennox Industries Inc.

Dallas, Texas, USA

3 Heat / 2 Cool Programmable

Touch Screen Thermostat

INSTALLATION

INSTRUCTIONS

WARNING

This thermostat is to be installed by a qualified service technician or

other qualified agency in accordance with the manufacturer’s instruc-

tions, all codes, and requirements of the authority having jurisdiction.

505,044M

8/2007

Page 2

Table of Contents

General Page 2. . . . . . . . . . . . . . . . .

Shipping and Packing List Page 2.

NecessaryTools Page 2. . . . . . . . . .

Thermostat Location Page 2. . . . . .

Remove Existing Thermostat Page 3

Thermostat Installation Page 4. . . .

Wiring Connections Page 4. . . . . . .

LED Indicator Page 5. . . . . . . . . . . .

Outdoor Temp. Sensor Page 5. . . .

Field Wiring Diagrams Page 6. . . .

Install Batteries Page 8. . . . . . . . . .

Attach T’stat to Wallplate Page 8. .

Set Calendar and Clock Page 8. . .

Adv. Heat Pump Features Page 9.

Installer Set−Up Page 11. . . . . . . . . .

System Test Page 19. . . . . . . . . . . . .

Troubleshooting Page 20. . . . . . . . . .

General

The Lennox X4147 programmable

touch-screen thermostat provides

control for up to three stages of heating

and two stages of cooling. The thermo-

stat may be used to control either a

conventional HVAC system which in-

cludes an outdoor condensing unit and

indoor furnace or a heat pump unit and

indoor air handler. The thermostat ter-

minal block accommodates 24V power

common from the furnace or air han-

dler. Three AAA alkaline batteries are

provided to be used as an alternate

power source or as a back−up in case

of an interruption of power.

Shipping and Packing List

Package 1 of 1 contains

1 − Assembled thermostat (includes

wallplate and thermostat)

1− Bag assembly containing the fol-

lowing:

2 − Screws

2 − Wall anchors

3 − AAA alkaline batteries

1 − Installation instruction

1 − Owner’s guide

1 − Warranty certificate

Necessary Tools

SNo. 2 Phillips screwdriver

SStandard pocket screwdriver

SDrill

SDrill bits (use 3/16" for drywall and

7/32" for plaster)

SPencil

SLevel

SHammer

SElectrical tape

Thermostat Location

Install the thermostat about 5 feet

(1.5m) above the floor in an area with

good air circulation.

Do not install the thermostat where it

may be affected by the following:

SDrafts or dead spots behind doors

and in corners.

SHot or cold air from ducts.

SRadiant heat from the sun or ap-

pliances.

SConcealed pipes or chimneys.

SAdjacent unconditioned areas

(outside wall behind the thermo-

stat).

Page 3

Remove Existing Thermostat

If this thermostat is being used to re-

place an existing thermostat, remove

the old thermostat:

1 − Turn off power at the heating and/

or cooling system or fuse/circuit

breaker panel.

2 − Remove the cover from the exist-

ing thermostat.

3 − Remove securing screws and re-

move existing thermostat from

wall or wallplate. Disconnect and

label the existing wires.

4 − Remove any remaining portion of

the existing thermostat from the

wall. Do not install the replace-

ment thermostat faceplate on the

existing wallplate. Though the

wallplates may appear to be the

same and the faceplate may fit on

the existing wallplate, the terminal

positions may vary in important

ways. In addition, serial number

and part number information is

carried on the replacement wall-

plate.

Do not allow the thermostat wires

to fall behind the drywall.

WARNING

This thermostat must be

installed using the provided re-

placement wallplate.

Failure to do so will bypass ther-

mostat control and activate con-

tinuous heating.

OLD THERMOSTAT

.18

.25 .3

NGER

THERMOSTAT

COVER

WALLPLATE

WARNING

MERCURY NOTICE

If the existing thermostat includes a mercury bulb, the thermostat must

be disposed of properly.

Contact your local waste management authority for instructions re-

garding recycling and proper disposal of thermostats which include

mercury bulbs.

Page 4

Thermostat Installation

The thermostat may be installed hori-

zontally in a 4 in. X 2 in. (101.6 mm X

50.8 mm) wiring box or on the wall us-

ing the provided anchors.

1 − Separate the wallplate from the

thermostat as shown.

THERMOSTAT

WALLPLATE

WIRE HOLE

2 − Pass the labeled wires through the

hole on the wallplate.

3 − Position the wallplate on the wall

with the arrow pointing up. Level

the wallplate (for appearance

only) and use a pencil to mark the

mounting holes.

WALLPLATE

LEVEL

PLACE LEVEL ON

SUPPORT TABS

MARK

MOUNTING

HOLES (2)

4 − If anchors are used, move the

wallplate aside and drill two new

holes (3/16" for drywall; 7/32" for

plaster).

5 − Tap the provided wall anchors into

the drilled holes until the back of

the anchor head touches the wall

surface.

6 − Position the wallplate over the an-

chors and pull the thermostat

wires back through the wiring

opening.

7 − Secure the wallplate using the

provided screws.

DRILLED

HOLES (2)

WALL

ANCHORS (2)

MOUNTING

SCREWS (2)

WALLPLATE

NOTE

Thermostat heat function will

not operate if thermostat has

been stored at, or is being used

in, ambient temperatures at or

above 90°F. Heat function will be

enabled after thermostat has

been placed in ambient tempera-

tures less than 90°F for about 30

minutes.

Wiring Connections

WARNING

Use minimum 18 guage wire for

all thermostat connections.

IMPORTANT

Do not connect the wires to this

thermostat based on wire color.

Improper wiring may cause

damage to the HVAC system.

Page 5

1 − Make wiring connections per the

appropriate wiring diagram on

page 6 or 7. Refer to the table

below for terminal designations.

Terminal Description

Y2 Second−stage cooling

W2 (AUX) Second−stage heating

(or auxiliary heating)

W (E) First−stage heating

(or emergency heating)

S1 Remote outdoor sensor

S2 Remote outdoor sensor

R24V power

OReversing valve

BReversing valve

GFan relay

YFirst−stage cooling

C24V common

LEquipment monitor

2 − Refer to inner terminal labels

when using the thermostat with

conventional systems (gas, oil or

electric heat plus air conditioning).

Refer to outer terminal labels in

heat pump applications. See fig-

ure below.

3 − Loosen screws of terminals that

will be used. Insert appropriate

wires in the terminal block under

the loosened screws. Securely

tighten each screw.

INSERT WIRE IN HOLE

WIRE HOLE

WALLPLATE

SCREW

TERMINALS

LETTER

DESIGNATIONS

LABELED WIRES

TERMINAL

BLOCK

4 − Connect wires to the correspond-

ing screw terminals per the ap-

propriate diagram.

5 − Push excess wire back into the

wall.

6 − Plug hole with nonflammable in-

sulation to prevent drafts from af-

fecting thermostat.

LED Indicator

An LED indicator is located in the up-

per right corner of the thermostat. It is

only visible when lit.

When an equipment monitor is con-

nected to the thermostat L terminal,

the LED lights when the monitor sends

a check or failure message to the ther-

mostat.

The LED requires the use of 24Vac

common power. The indicator will not

light when the thermostat is powered

by the batteries alone, or when 24Vac

power is interrupted.

Outdoor Temperature Sensor

Install the optional outdoor tempera-

ture sensor (X4148) as outlined in the

instructions provided with the sensor.

Page 6

Field Wiring Diagrams

TYPICAL CONVENTIONAL MULTI−STAGE APPLICATION

TWO−STAGE HEAT / TWO−STAGE COOL

TYPICAL MULTI−STAGE HEAT PUMP APPLICATION

NO AUXILIARY HEAT

TYPICAL MULTI−STAGE HEAT PUMP APPLICATION

WITH AUXILIARY HEAT

Page 7

Field Wiring Diagrams (Continued)

TYPICAL SINGLE−STAGE HEAT PUMP SYSTEM WITH AUXILIARY HEAT

TYPICAL SINGLE−STAGE HEAT PUMP SYSTEM WITHOUT AUXILIARY HEAT

Page 8

Install Batteries

1 − Install three provided AAA alkaline

batteries in the back of the thermo-

stat as shown.

BACK OF THERMOSTAT

BATTERIES

(3)

2 − Remove tab from the lower right−

hand corner of the thermostat

back to activate the real−time

clock.

REMOVE DURING

INSTALLATION

REMOVE

TAB

REMOVE DURING

INSTALLATION

Attach Thermostat to Wallplate

NOTE − The thermostat may be pro-

grammed before it is secured to the

wallplate.

1 − Align the terminal blocks on the

wallplate with the pins on the back

of thermostat.

2 − Push the thermostat straight onto

the pins until it snaps into place.

3 − Turn on power at the furnace or air

handler or at the fuse or circuit

breaker.

PINS ON

BACK OF

THERMOSTAT

WALLPLATE

TERMINAL

SCREW

BLOCK

Set Calendar and Clock

This thermostat is designed to auto-

matically keep the current time and

date in memory for up to ten years, un-

der normal use, once the calendar has

been set. When power is first applied to

the thermostat, the display is ready to

set the calendar.

1 − Use the arrow keys to set the year,

month and day.

2 − Press the DONE key.

DONE

USE

ARROWS

TO SET

YEAR

SET

CURRENT

DATE

SET

MONTH

MON WED THU FRI SATTUE

3 − Use the arrow keys to set the cur-

rent time.

4 − Press the DONE key.

DONE

MON WED THU FRI SAT

USE

ARROWS

TO SET

TIME

TUE

NOTE − Date and time may be ad-

justed after the initial set−up using ei-

ther the installer or user set−up menu.

Page 9

Advanced Heat Pump Features

The thermostat installer set−up may be

configured in several different ways to

ensure the desired system operation.

Heat Pump Application

Dual Fuel (Fossil Fuel) Aux. Heat

Outdoor Temperature Sensor and

Thermostat Control Aux. Heat

(No external dual fuel kit)

Installer set−up as follows:

SInstaller set−up number 0170 −−

option 7, 11, or 12 −− heat pump.

SInstaller set−up number 0200 −−

option 1 −− back−up heat is fossil

fuel.

SInstaller set−up number 0210 −−

option 0 −− no external fossil fuel

kit.

SInstaller set−up number 0340 −− not

shown −− outdoor temperature

sensor for control option chosen

by default.

SInstaller set−up number 0350 −−

choose appropriate balance point

temperature.

Heating Mode Operation

Outdoor Temp. above Balance

Point

When the outdoor temperature is

above the selected balance point, the

compressor satisfies the heating de-

mand. However, if the room thermostat

senses an indoor temperatature drop

of 2°F or more while the compressor is

operating, the heat pump operation will

stop and the furnace will satisfy the re-

maining heating demand.

NOTE − The balance point setting is

selected using Installer Set−Up Num-

ber 0350.

Heating Mode Operation

Outdoor Temp. below Balance Point

When the outdoor temperature is be-

low the selected balance point, only

the furnace (fossil fuel) operates to sat-

isfy the heating demand. The fan (G

terminal) does not energize when the

thermostat calls for heat.

Emergency Heat Operation

When the emergency heat mode of op-

eration is selected by the thermostat,

compressor operation is locked out.

The first stage of heat becomes what is

connected to the thermostat E termi-

nal. The second stage of heat be-

comes what is connected to the Aux.

terminal. In cases where there is only

one source of non−compressor heat,

the E terminal must be jumped to the

Aux. terminal.

Heat Pump Application

Dual Fuel (Fossil Fuel) Aux. Heat

Using External Dual Fuel Kit

Installer set−up as follows:

SInstaller set−up number 0170 −−

option 7, 11, or 12 −− heat pump.

SInstaller set−up number 0200 −−

option 1 −− back−up heat is fossil

fuel.

SInstaller set−up number 0210 −−

option 1 −− external fossil fuel kit is

controlling heat pump auxiliary

heat.

SInstaller set−up number 0340 −−

option 0 or 1 −− outdoor tempera-

ture sensor not used or used for

display only.

SInstaller set−up number 0350 −−

choose appropriate balance point

temperature.

Heat pump operation is determined by

external fossil fuel kit.

Page 10

Heat Pump Application

Electric Auxiliary Heat

with Outdoor Temperature Sensor

SInstaller set−up number 0170 −−

heat pump.

SInstaller set−up number 0200 −−

back−up heat is electric.

SInstaller set−up number 0340 −−

outdoor temperature sensor for

control option chosen.

SInstaller set−up number 0350 −−

choose appropriate compressor

lock−out temperature.

SInstaller set−up number 0360 −−

choose appropriate auxiliary lock−

out temperature.

NOTE − There is a minimum 5°F dead-

band between the compressor and

auxiliary heat lock−out temperatures.

Heating Mode Operation

When the outdoor temperature is be-

low the compressor lock−out tempera-

ture (balance point), only the auxiliary

heat operates.

When the outdoor temperature is

above the auxiliary lock−out tempera-

ture (balance point), only the compres-

sor operates.

When the outdoor temperature is be-

tween the two temperatures, both the

compressor and auxiliary heat oper-

ate.

COMPRESSOR

LOCK−OUT

TEMPERATURE

AUXILIARY

LOCK−OUT

TEMPERATURE

COMPRESSOR ONLY

BOTH COMPRESSOR AND

AUXILIARY HEAT

AUXILIARY ONLY

OUTDOOR TEMPERATURE

Emergency Heat Operation

When the thermostat is set for the

emergency heat mode, the compres-

sor and auxiliary lock−out features are

turned off. Compressor operation is

locked out. The first stage of heat be-

comes what is connected to the ther-

mostat E terminal. The second stage of

heat becomes what is connected to the

Aux. terminal.

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