Lennox ComfortSense 7500 Montageanleitung

Installation and Setup

Guide

Color Touchscreen

Programmable Thermostat

ComfortSense®7500

Model: 13H14

507504-02

5/2017

Supersedes 507504-01

IMPORTANT

Read this manual before programming the ther

mostat.

Use this thermostat only as described in this man

ual.

TABLE OF CONTENTS

Shipping and Packing List 2.....................

Overview 3...................................

Installation 5..................................

System Settings 21.............................

Humidify 37....................................

Dehumidify 39.................................

Unit Part (Catalog) & Serial Numbers 42............

Memory Protection 43...........................

User Settings 43...............................

WARNING

This product contains a chemical known to the

State of California to cause cancer, birth

defects, or other reproductive harm.

Shipping and Packing List

1 - ComfortSense

®7500 , 7-day programmable

touchscreen thermostat with back plate

2 - Mounting screws (M3.5x25mm self-tapping

screws)

2 - Wall anchors

1 - Wall plate

1 - Warranty certificate

1 each - Homeowner and Installer Guides

NOTE - This thermostat is equipped with

automatic compressor protection to prevent

potential damage due to short cycling or extended

power outages. The short-cycle protection

provides a 5-minute delay between heating or

cooling cycles to prevent the compressor from

being damaged.

Overview

Description

The ComfortSense®7500 thermostat is an

electronic 7-day universal multi‐stage

programmable touch screen thermostat. It also

offers enhanced capabilities which include:

humidification measurement and control,

dew point adjustment control,

dehumidification measurement and control,

Humiditrol

®Enhanced Dehumidification

Accessory (EDA) capability,

equipment maintenance reminders,

worry-free memory storage feature,

menu-driven touch-screen display.

This thermostat supports heat pump or non-heat

pump units, with up to two stage heat pump and

two auxiliary stages or two stages of heating and

two stages of cooling.

Dimensions (H x W x D)

Case dimensions: 3-5/16 x 4-5/16 x 7/8 in. (84 x

110 x 22mm)

Wall Plate Dimensions (H x W)

Plate dimensions: 4-1/2” x 5-3/4” (114 x 146mm)

Compressor Short-Cycle Protection

A 5-minute compressor short-cycle protection

timer begins when a compressor output is

de-energized. Also, if a power loss occurs, the

system will go into compressor protection mode

and display “waiting” next to either a snow flake

icon (compressor cooling), or flame icon

(compressor heating) in the display.

Outdoor Sensor (Optional)

IMPORTANT

The outdoor sensor must be connected to oper

ate a system with a Humiditrol®accessory.

An optional (purchase separately) outdoor sensor

(X2658) is required for dual-fuel applications,

outdoor temperature display on the home screen,

balance points, dew point humidity control, and

with Humiditrol®EDA.

In addition to measuring and displaying outdoor

temperature, the outdoor sensor provides dew

point adjustment and control for all models. If used

with this thermostat, the sensor enables optimal

heating equipment operation via programmable

balance points.

NOTE - For proper operation of Humiditrol®EDA

applications, the outdoor sensor (X2658) MUST

be installed.

Refer to page 11 for remote sensor installation and

thermostat setting configuration.

Figure 1. Outdoor Sensor

IMPORTANT

In all applications, the ComfortSense®Model

7500 thermostat can only be used with all

residential units and approved commercial

split‐system matches, and those which meet

the following installation criteria:

installation uses 18 GAUGE thermostat

wire or larger,

thermostat wire run length DOES NOT

EXCEED 300' (91m),

load from any thermostat connection is 1

AMP or LESS.

WARNING

Improper installation, adjustment, alteration,

service or maintenance can cause property

damage, personal injury or loss of life.

Installation and service must be performed by a

licensed professional HVAC installer (or equiv

alent) or service agency.

CAUTION

This is a 24VAC low-voltage thermostat. Do not

install on voltages higher than 30VAC.

Do not short (jumper) across terminals on the

gas valve or at the system control to test instal

lation. This will damage the thermostat and void

the warranty.

WARNING

Always turn off power at the main power source

by switching the circuit breaker to the OFF posi

tion before installing or removing this thermo

stat.

All wiring must conform to local and national

building and electrical codes and ordinances.

Installation

Before beginning installation, note the type of

equipment, number of stages, and any

accessories being installed. This thermostat is a

24VAC low-voltage thermostat and requires a

common wire to the thermostat to operate.

Shut off all power to system before installing.

Read this entire document, noting which

instructions pertain to your equipment and

system requirements.

Make sure that all wiring conforms to local

and national building and electrical codes and

ordinances.

Use thermostat wire between the thermostat

and the optional outdoor temperature sensor

(may be separate wire pair or two wires of a

multi-wire cable).

Ensure load from any thermostat connection

is less than 1 AMP.

DO NOT

Install on voltages higher than 30VAC.

Short (jumper) across terminals on the gas

valve or at the system control to test

installation. This will damage the thermostat

and void the warranty.

Install on outside walls or in direct sunlight.

Exceed thermostat wire run length greater

than 300 feet (91m).

INSTALLING THERMOSTAT

1. Unpacked the thermostat and open the case

with a thin-blade screwdriver. Place between

wall base and unit and twist to separate unit

from base.

2. Select a location for the thermostat about 5

feet (1.5m) above the floor in an area with

good air circulation at average temperature.

3. Do not install the thermostat where it can be

affected by:

 Drafts or dead spots behind doors

and in corners.

 Not close to entrance or automatic

doors

 Not close to heat generating

equipment such as kitchen equipment

 Not in an enclose environment unless

a remote indoor sensor is used.

 Hot or cold air from ducts.

 Radiant heat from sun or appliances.

 Concealed pipes and chimneys.

 Non-heated (non-cooled) areas such

as an outside wall behind the

thermostat.

Figure 2. Removing Back Plate

4. Use steps Athrough J (step Japplicable

when using provided wall plate) to install the

thermostat.

CUT OR DRILL A SMALL HOLE

FOR THERMOSTAT WIRING

¾” x ¾”

PULL ABOUT 3” OF THERMOSTAT

WIRE THROUGH OPENING AND RE

MOVE OUTER THERMOSTAT WIRE

JACKET.

THIS WILL HELP IN

ROUTING THE THER

MOSTAT WIRING TO

THE PROPER THER

MOSTAT TERMINALS

1/4”

TRIM 1/4” INSULATION FROM

END OF EACH WIRE

USE UNIT WALL PLATE AS TEMPLATE TO MARK

DESIRED MOUNTING HOLE LOCATIONS ON WALL.

(USE A LEVEL) ALIGN WALL PLATE

DRILL 3/16” HOLES AT MARKED LOCATIONS

ON WALL FOR ANCHORS

NOTE: INSTALLATION OF WALL PLATE IS

OPTIONAL.

Thermostat Installation with Wall Plate

F- Place wall plate

over holes in wall.

G- Insert wall anchors

through wall plate into wall.

H - Attach back plate

to wall plate.

I- Insert provided screws through back and wall

plates into wall anchors.

J- Attach thermostat to

back plate.

Thermostat Installation without Wall Plate

G- Place back plate over wall

anchors in wall.

F- Insert wall anchors

through wall plate into wall.

H- Insert provided screws through

back plate into wall anchors.

I- Attach thermostat to

back plate.

WIRING THERMOSTAT

Thermostat wiring connections with various units,

including dual fuel, zone control, and applications

that include the Humiditrol®Enhanced

DehumidificationAccessory (EDA). See figures 3

through 7. For whole home dehumidifier, refer to

the installation instruction for the dehumidifier.

1. Connect wiring between thermostat, indoor

unit, and outdoor unit as shown in the

appropriate wiring diagram.

2. Connect optional (purchase separately)

outdoor sensor. See Installing Outdoor

Sensor for further details and provided wiring

diagrams.

3. Seal the hole in the wall with a suitable

material to prevent drafts from entering the

thermostat case.

4. Configure thermostat and equipment for

system type, program the thermostat, and

test system.

TERMINAL DESIGNATIONS

Tc - Outdoor Temp. Sensor Connection 1

To - Outdoor Temp. Sensor Connection 2

H - Humidification relay (to Humidifier)

D - Dehumidification relay (to DS terminal)

W2 - Second-stage heating (non-heat pump) or 4th

stage (heat pump)

Y2 - Second-stage heating or cooling

O - Cool active reversing valve

B - Heat active reversing valve

C - Common 24VAC

G - Fan relay

W1 - First-stage heating (non-heat pump or

emergency heat) or third-stage heating

(heat pump)

Y1 - First-stage heating or cooling

R - 24VAC power

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