Lennox ComfortSense 7500 Manuel utilisateur

507503-02

6/2018

Supersedes 5/2017

ComfortSense®7500 Thermostat

User Guide

Table of Contents

Features................................................................2

Home Screen Temperature Indicator.................3

Home Screen Information...................................3

Operating Mode Selection ..................................6

Fan Operation ................................................................ 6

User Menu Screen ...............................................7

Notications.................................................................... 7

Reminders...................................................................... 8

Performance Report....................................................... 8

Edit Schedules ............................................................... 8

User Settings Menu...........................................10

Features

The ComfortSense® 7500 Series thermostat is an

electronic 7-day, universal, multi-stage, programma-

ble, touchscreen thermostat. It also offers enhanced

capabilities including humidication/dehumidica-

tion/dew point measurement and control, Humidit-

rol® EDA (Enhanced Dehumidication Accessory)

control, and equipment maintenance reminders.

• Large, clear color display that shows the current

and set temperature, time, indoor relative

humidity and outdoor temperature (if optional

outdoor sensor is installed and enabled).

• Dehumidication measurement and control.

• Humiditrol® EDA capability.

• Dew point adjustment control.

• Ergonomic design.

• Smooth Setback Recovery starts system early to

achieve setpoint at start of program period.

• Compressor short-cycle protection (5 minutes).

• Real-time clock keeps time during power failures

and automatically adjusts for daylight savings

time and leap year.

• Maintenance reminders let user know when

to service or replace lters, humidier pads,

ultraviolet lamps, plus two user or installer dened

custom reminders.

• Program Hold options allow user to override the

program schedule as desired by time and date.

• Select individual days or groups of days to set

programming.

• Programmable fan offers increased performance

when combined with whole home indoor air

quality products.

Home Screen Temperature Indicator

2:31 am

heat−to

cool−to

inside 57%

heat/cool

away

72°

78°

outside

89°

waiting 0

ⒸⒷ

Ⓐ

Ⓔ

ⒹⒻ

Figure 1. Temperature Dial Feature

A. This is the heat set point position indicator on

the dial. This object will be red in color.

B. This is the cool set point position indicator on

the Dial. This object will be blue in color.

C. This is the location area where no system

demand is active. In gure 1, the example would

be any temperature between 73°F and 77°F.

D. When there is an active call for heating, this

area of the dial will fade back and forth from

white to red.

E. When there is an active call for cooling, this

area of the dial will fade back and forth from

white to blue.

F. The yellow line indicates the actual room

temperature on the temperature dial indicator.

Home Screen Information

2:31 am

heat−to

cool−to

inside 57%

away

72°

78°

outside

89°

Ⓒ

Ⓑ

Ⓚ

Ⓐ

Ⓘ

ⒺⒻ

Ⓖ

Ⓙ

Ⓓ

Ⓔ

Ⓕ

Ⓗ

waiting

Schedule hold

until 8:22 am

schedule 1

Figure 2. Home Screen

Touch the screen to turn on the back-light if it is off.

A. OPERATING MODE - touch to access the

screen that will list available modes. Selectable

modes are heat/cool, heat only, cool only, off,

emergency heat, schedule 1, schedule 2, and

schedule 3. In addition fan operation can be set

to on, auto or circulate.

B. AWAY - Selecting AWAY will allow the user to set

the heating and/or cooling mode temperatures

when away from home. Touch cancel to exit

this screen and return to the home screen and

normal system operations.

C. Displays current time.

D. Menu - This will allow access to notications,

performance report, schedules and settings.

E. This allows you to set the heat-to (if enabled)

temperature. Selecting the heat-to or

temperature dial position indicator will take you

to the temperature setting detail screen. The

temperature dial will change from white to red

when heating is active.

F. This allows you to set the cool-to (if enabled)

temperature. Selecting the cool-to or

temperature dial position indicator will take you

to the temperature setting detail screen. The

dial will change from white to blue when cooling

is active.

G. Indicates the current indoor humidity percentage

in the home along with a humidity icon (rain

drop). The icon changes based on the humidity

level in the home.

H. This location could display the outdoor

air temperature. What is displayed in that

location depends on what sensor is installed

and congured through the thermostat user

interface. If neither is installed, then this area

will be blank.

I. Displays the current indoor temperature.

J. Indicates the schedule is on hold until the next

time period or permanent.

• Place the schedule on hold by touching on

either the heat-to or cool-to location on the

screen. If an adjustment is required for the

temperature setting, this can be done now.

• After approximately three seconds the

screen will display the override setting

options.

• From the override setting screen, the

options are 1 hour, 2 hour or next scheduled

period. Make selection and then touch set.

• For the 1 or 2 hour setting the home

screen will indicate schedule hold until time

indicated (i.e., 11:57 pm). To exit schedule

hold, touch X

• When until next period is selected, the set

point will be kept until the next program

schedule period. To exit until next period,

touch X.

K. System Status Icons - Equipment operation

information appears along the left side of the

home screen. The displayed icons will indicate

cooling or heating demand, cooling compressor

delay, or cooling demand.

Table 1. System Status Icons

Icon

Description

NOTE: Touching the icon will display a

text description.

Humidifying icon is displayed when

humidifying is occurring. Touching on the

icon will display humidifying next to the

icon.

Dehumidifying icon is displayed when

dehumidifying is occurring. Touching the

icon will display dehumidifying next to the

icon.

Red ames indicates the system is

heating.

Blue ames indicates the system is

cooling.

Table 1. System Status Icons

Icon

Description

NOTE: Touching the icon will display a

text description.

Snow ake indicates the next mode of

operation will be cooling. Waiting indicates

there is a compressor delay which is by

default ve minutes.

Red ame indicates the next mode of

operation will be heating. Waiting indicates

there is a compressor delay (heat pump

heating) which has a default of ve

minutes and is not adjustable.

Indicates the system is running in

emergency heat mode.

All heat pumps operating in northern

climates below 35°F (1.6°C) normally

need a supplemental heating source.

Usually it is in the form of electric heating

provided by the indoor unit. Other sources

could be gas, oil, or hot-water back-up

systems as well. The supplemental heat

is also referred to as “second-stage” or

“back-up” heating, with “rst-stage” being

the heat pump only. Emergency heat is

when you use your supplemental heat

(2nd stage) by itself, without the use of

your heat pump (1st stage heat). Not

available for non-heat pump systems.

Table 1. System Status Icons

Icon

Description

NOTE: Touching the icon will display a

text description.

Indicates the system is running in auxiliary

heat mode.

Is only available with heat pump system.

If outdoor temperature is above the high

balance point, only the heat pump will

operate - default 50°F (10°C) high. If

outdoor temperature is below the low

balance point, only auxiliary heating will

operate - default 25°F (-4.0°C) low. If

outdoor temperature is in-between the

high and low balance point, both the heat

pump and auxiliary heat sources can

operate.

Transitioning to next schedule

temperature setting. This icon will only

appear if smooth setback recovery is

enabled under the installer setup. When

enabled, it will begin recovery up to two

hours before the programmed time so that

the programmed temperature is reached

at the corresponding programmed event

time. Assume 12°F per hour for gas/

electric heating and 6°F per hour for rst

stage compressor based cooling. When

smooth set back recovery is disabled,

the control will start recovery at the

programmed time set in the schedule.

Operating Mode Selection

Touch anywhere in the area indicated below to se-

lect how the system will operate.

2:31 am

heat−to

cool−to

inside 57%

schedule 1

away

72°

78°

outside

69°

Figure 3. Operating Mode Selection

Select Modes

1. HEAT/COOL allows the thermostat to switch

between heating and cooling automatically.

2. HEAT ONLY allows only heating demand.

3. COOL ONLY allows only cooling demand.

4. OFF indicates system has been turned off.

5. EMERGENCY HEAT allows heat pump system

to use a secondary heat source to come on

and reach the desired user temperature setting

faster.

6. SCHEDULES (1, 2 or 3) See Edit Schedules on

page 13 for customizing schedules).

7. ON, AUTO and CIRCULATE - Select by

touching the desired fan operation ON, AUTO

and CIRCULATE. When selected a green check

mark will be indicated.

If FAN mode AUTO, ON or CIRCULATE is selected

during scheduling for the current period, the ther-

mostat will indicate the current fan mode in the in-

formation display (FAN ON or FAN CIRC). In the

CIRCULATE mode, the fan will follow the setting

congured under menu > settings > fan >select

fan mode. Under circulate the circulate off time can

be set from 1 to 30 minutes.

Fan OperatiOn

The desired fan mode can be selected in addition to

selected mode of operation.

Table 2. Fan Operation

Icon Mode Description

Fan is NOT following the

schedule and runs continu-

ously until it is changed from

the select mode.

auto Fan will follow the fan setting

in the selected schedule.

Table 2. Fan Operation

Icon Mode Description

circulate

Fan is following schedule

and cycles during periods

of equipment inactivity. Cir-

culate off time is set by the

user.

User Menu Screen

Touch the three lines in the upper right-hand cor-

ner of the screen to access the menu. Selectable

options under menu are notications, performance

report, edit schedules and settings.

performance report

notifications

edit schedules

settings

Figure 4. User Menu Screen

nOtiFicatiOns

When a system error or reminder occurs, a pop-up

screen will appear indicating the condition.

• Error code notication pop-up can be dismiss by

touching the back button. Contact the dealer to

resolve the issue.

• For notication, touch either clear or set a future

reminder.

• Any active history for notications (critical errors

or reminders will be listed under settings >

notication.

• If critical errors occur, they will also be displayed

under notications as illustrated in gure 5.

• Touch the contractor info option for assistance.

notifications

high temperature protection

error code: 0004

05/22 12:23pm

dealer info

critical reminders

Figure 5. Critical Notications

reminders

When reminders occur, they will also be displayed

under notications as illustrated in gure 7. Touch

the clear or remind later to redisplay active reminder

for 1 day, 1 week, 1 month, 3 months or a custom

date.

notifications

critical

media filter

reminders

05/22 12:23pm

Clear remind later

Figure 6. Reminder Notications

perFOrmance repOrt

This will display the total number of hours each

month that the system has been running. Example

would be for mar (March) 23H or 23 hours. To re-

turn to the menu screen, touch the house icon in the

upper left-hand corner of the screen. Red bar indi-

cates heating and blue indicates cooling hours ran.

edit schedules

Any schedule can be edited by touching the right

arrow next to the desired schedule.

edit schedules

schedule 1

schedule 2

schedule 3

Figure 7. Edit Schedules Screen

NOTES: See “Operating Mode Selection” on page

6 to run a specic schedule.

From the HOME screen touch the MENU and touch

edit schedules option.

The edit schedules screen will allow section of up

too three separate schedules. On the edit schedules

screen, each schedule can be renamed and edited.

See “Figure 8. Renaming and Editing Schedules”

on page 9.

NOTES: The fan mode that is selected under the edit schedules screen will always override the fan mode

selected under the select mode screen or user settings > fan screen if different

For example, if the select mode fan setting or user settings > fan is congured for Auto, and the schedule

fan mode is set to circulate, then the system will follow the fan mode selected in the active schedule.

edit schedules

schedule 1

schedule 2

schedule 3

schedule x

(rename)

select days

select mode

select days

individual days

week/weekend

all 7 days

select mode

heat/cool

heat only

cool only

individual

days

monday

tuesday

wednesday

thursday

friday

saturday

sunday

wake

leave

home

night

week /

end

week

weekend

all 7 days all days

wake

(rename)

time

cool-to

heat-to

fan

cool-to

and/or

heat-to

time

fan

select fan mode

select time or

delete period

If period

deleted

* A maximum of four time periods can be used. If

any time periods are deleted, an option to add a

time period back will appear on this screen.

To navigate to the next

screen in the selection

process, always touch the

sired option.

Figure 8. Renaming and Editing Schedules

User Settings Menu

user settings

fan

heat/cool

humidity>

reminders

general

display

Figure 9. User Settings Menu

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