Pentax THX9421R, YTHX9421R User's Guide

Prestige

®

Touch Scre en
Thermostat

User Guide

TM

Welcome

Congratulations on your purchase of a
Honeywell touch screen programmable
thermostat. When used with the optional
RedLINK Internet Gateway, you can remotely
monitor and control the heating and cooling
system in your home or business—you
can stay connected to your comfort system
wherever you go.

Honeywell’s Total Connect Comfort is the
perfect solution if you travel frequently, own
a vacation home, a business or manage
an investment property or if you are simply
looking for peace of mind.

Features of your Prestige thermostat

With your new thermostat, you can:

• Connect to the internet to monitor and control your heating/cooling system

and receive alerts by email (requires optional RedLINK Internet Gateway)

• View outdoor temperature and humidity (requires optional Wireless
Outdoor Sensor)

• Control humidification, dehumidifcation or ventilation

Your new thermostat also provides:

• Adaptive Intelligent Recovery—over time, the Prestige thermostat “learns”

how long it takes your system to reach the temperature you want. It turns
on the heating or cooling system earlier to make sure you’re comfortable
at the time you expect.

• Dealer information on the screen—making it easy for you to contact your
dealer for service.

• Vacation and holiday scheduling—allowing you to program a setback
temperature to save energy while you are away.

• Keypad lockout to prevent unauthorized changes.

• Equipment status—provides on/off status of all equipment controlled by

the thermostat.

• Preferences—allowing you to customize the thermostat to your desired
settings.

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Table of contents

Programming and Operation

Quick reference ...........................................3

Setting the time/date ................................... 5

Setting the fan ............................................. 6

Setting system mode ..................................7

Preset energy-saving schedules ................. 8

Adjusting program schedules ...................... 9

Schedule overrides ...................................12

Menu Options

Viewing equipment status ......................... 14

Setting vacation, holiday, and events ........ 15

Setting holiday/event schedules:

commercial use ......................................... 16

Setting humidification and

dehumidification ........................................ 23

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Setting ventilation ...................................... 26

Setting preferences ................................... 27

Cleaning the thermostat screen ................ 28

Security settings ........................................29

Viewing dealer information ........................ 30

Advanced features ....................................31

Appendices

Installer options ......................................... 32

Replacing batteries ................................... 33

Temperature and humidity display ............ 35

Optional accessories .................................37

Troubleshooting ......................................... 39

Regulatory information .............................. 41

Quick reference: residential use

HOME. Touch to display Home screen.

FAN. Select fan mode.

SYSTEM. Select system mode (Heat/Cool).

MENU. Touch to display options. Start here

to set a program schedule.

Current schedule. Touch an arrow to
change temperature setting and select a
Temporary or Permanent Hold.

Indoor conditions. Shows indoor
temperature and humidity.

Current date and time.

Current status. Shows system mode (heat/

cool), outdoor temperature and humidity
(with optional outdoor sensor).

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Quick reference: commercial use

HOME. Touch to display Home screen.
FAN. Select fan mode.
SYSTEM. Select system mode (Heat/Cool).
MENU. Touch to display options. Start here to set

a program schedule.
Thermostat location. Quickly identify which

thermostat is in control of a specific area.
Current schedule. Touch an arrow to change

temperature setting and set a temporary hold.
Override. Touch to temporarily override the

program schedule.
Indoor conditions. Shows indoor temperature

and humidity.

Current date and time.
Current status. Shows system mode (heat/cool),

outdoor temperature and humidity (with optional
outdoor sensor).

USB port. Use USB device to load holiday
schedules and custom events.

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Setting the time/date

1 Touch the current time. The screen

displays Set Time/Set Date.

2 Touch Set Time or Set Date.
3 Touch s or t until the proper time/date

is displayed.

4 Touch Done to save or Cancel to ignore

changes.

NOTE: The thermostat will automatically

switch to and from Daylight Saving Time.

Fri, Jun 14, 2013

6:30 pm

30

Done

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Setting the fan

1 Touch FAN to display fan settings.
2 Touch On, Automatic, Circulate, or Follow

Schedule.

3 Touch Done to save and exit.

On: Fan is always on.
Automatic: Fan runs only when the

heating or cooling system is on.
Circulate: Fan runs randomly about

35% of the time (residential use only).
Follow Schedule: Fan controlled by

program (see pages

NOTE: In commercial use, touch

Auto or On to temporarily override the
programmed fan schedule.

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8–13

).

FAN

Done

Setting system mode

1 Touch SYSTEM to display system settings.
2 Touch desired option:

Heat: Thermostat controls only the
heating system.

Cool: Thermostat controls only the
cooling system.

Off: Heating/cooling systems are off.
Automatic: Thermostat selects heating

or cooling as needed depending on the
indoor temperature.

Emergency Heat (heat pumps
with aux. heat): Controls auxiliary/

emergency heat. Compressor is locked
out.

3 Touch Done to save and exit.

NOTE: The Automatic and Emergency

Heat system settings may not appear,

depending on how your thermostat was
installed.

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Done

SYSTEM

Preset energy-saving schedules

This thermostat uses default Energy Saver settings that can reduce your heating/
cooling expenses. To customize settings, see next page.

(Mon-Fri)Start time

Cool

Heat

(Sat-Sun)

CoolStart time HeatPeriod Fan

Heat

(Mon-Fri)Period

Wake 6:00 am 70° 78° 70° 78°
Leave 8:00 am 62° 85° 62° 85°
Return 6:00 pm 70° 78° 70° 78°
Sleep 10:00 pm 62° 82° 62° 82°

Residential Use

Occupied 1 8:00 am 70° 75° On
Unoccupied 1 10:00 pm 55° 85° Auto
Occupied 2* 12:00 am 70° 75° On
Unoccupied 2* 12:00 am 55° 85° Auto

Commercial Use

* Period 2 is cancelled by default. If you activate it, the values shown above are

default settings.

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Cool

(Sat-Sun)

Adjusting program schedules

1 Touch MENU.

MENU

2 Select Create/Edit Schedule.

• Touch Guide Me to create a

schedule by answering simple
questions.

Create / Edit Schedule

• Touch I’ll do it myself to manually

create a program schedule. See

10.

page

• Touch View/Edit to view the full

schedule and make a quick
adjustment.

NOTE: To reduce costs, use the pre-

set Energy Saver settings described
on page

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8.

Adjusting program schedules (continued)

3 Select the days to schedule, touch Next.
4 Touch Wake to set your Wake time for

selected day(s).

6:00 am

WAKE

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Next

Adjusting program schedules (continued)

5 Touch s or t to set Heat and Cool

temperatures for the Wake period, then
touch Done.

6 Touch other time periods (Leave, Return,

Sleep) to set time and temperatures for

each.

7 Touch Done to save and exit.

NOTE: Touch Delete Period to eliminate

any unwanted time period.

NOTE: Touch Fan Settings to customize

fan settings for any time period.

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Done

Overriding schedules: residential use

1 Touch s or t to adjust the

temperature (right side of screen)
and the Hold Until time (left side). The
schedule will resume when the Hold
Until time expires.

2 Touch Switch to Permanent Hold to keep

the same temperature until you change
it or resume the program schedule.

3 Touch Cancel Hold at any time to

resume the program schedule.

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Switch To

Permanent Hold

Overriding schedules: commercial use

Touch s or t to adjust the temperature.
It will be maintained until the hold time you
set.

• To change the hold time, touch the
Hold Until arrow buttons. This time
can be adjusted up to the maximum
time set by the installer.

• Touch Override to use a pre-set
occupied temperature if a person
uses the room during an unoccupied
period. The new temperature will be
maintained for 1 hour and can be
adjusted up to the maximum time set
by the installer.

The programmed schedule will resume
when the override timer expires. Touch

Cancel Hold at any time to resume the

program schedule.

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OVERRIDE

Viewing equipment status

1 Touch MENU.
2 Select Equipment Status.
3 Touch s or t to view the status of

all the equipment your thermostat
is controlling. Depending on how
your thermostat was installed, the
Equipment Status screen can report
data about the following systems:

• Heating and cooling

• Fan

• Humidification

• Dehumidification

• Ventilation

• Maintenance reminders

• Thermostat information.

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MENU

Equipment Status

Done

Setting vacation hold: residential use

This feature helps you save energy while

MENU

you are away, and restores comfortable
settings just before you return home.

Vacaon Mode

1 Touch MENU.
2 Select Vacation Mode.
3 Touch s or t to select the date

you leave, then touch Next for further
scheduling details, including times of
day, temperature settings, return date,
and return settings.

4 Review your selections on the last

Next

display, and touch Done to save your
settings. Touch Back, then Cancel to
ignore the changes.

Done

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Setting holiday/event schedules: commercial use

This feature helps you conserve energy
when the workplace is unoccupied for
special events and holidays.

1 Touch MENU.
2 Select Holiday/Event Scheduler.
3 Select the item you want to schedule.

• Custom Events lets you set up
other days for special schedules.

• US and Canadian Holiday options
let you select from a list of holidays
commonly observed in each
country.

4 Make selections as prompted on each

screen. For more information, see next
two pages.

5 Touch Done to save your settings.

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MENU

Holiday / Event Scheduler

Setting custom events: commercial use

This feature lets you customize temperature
settings to be maintained during a specific
event. You can set up an event for a specific
date or day in a month. The thermostat
resumes normal scheduling after the event.

1 Select Custom events from the Holiday/

Event Scheduler menu.

2 Select Create a new event.
3 Select Specific Date or Month/Weekday.

• For Specific Date, you are prompted

to select the start date, settings, end
date, and frequency for the event.

• For Month/Weekday, you are prompted

to select the month, day of the week,
week of the month, settings, length of
event, and frequency of the event.

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Create a new event

Next

Setting custom events: commercial use (continued)

4 Review the settings and touch Done to

save them. Touch Back, then Cancel to
ignore the changes.

Done

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Setting holiday schedule: commercial use

This feature lets you customize temperature
settings to be maintained on specified
national holidays. The thermostat resumes
normal scheduling between selected holidays.

1 Select US Holidays or Canadian Holidays

from the Holiday/Event Scheduler menu.

2 Select Add/Edit Holidays. A list of national

holidays is displayed.

3 Touch the check box next to each holiday

for which you want to maintain specific
settings, (Touch s or t to scroll through
the holiday list.) then touch Next.

Set the holiday schedule for Occupied
or Unoccupied temperatures, depending
whether the building will be in use.

4 Touch s or t to select the Heat and Cool

temperatures.

5 Review the settings and touch Done to

save them. Touch Back, then Cancel to
ignore the changes.

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Next

Setting holiday override: commercial use

This feature lets you customize temperature
settings to be maintained from now until
a specified date. The thermostat resumes
normal scheduling on the date you select.

1 Touch MENU.
2 Select Holiday Mode to display

temperatures while you are away on
holiday.

3 Touch s or t to select the Heat and

Cool temperatures, then touch Next to
select return date.

4 Review the settings and touch Done to

save them. Touch Back, then Cancel to
ignore the changes.

NOTE: The cool temperature can only be

set higher than the unoccupied program
setting and the heat temperature can
only be set lower than the unoccupied
program setting.

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MENU

Holiday Mode

Done

Initiating occupancy mode: commercial use

This feature keeps temperature at an
energy-saving level until you touch Press

to start occupancy. When you arrive, touch

the button to maintain a comfortable
temperature while the room is occupied.

Touch the s or t buttons to set the
temperature or the Hold Until time. The
temperature is maintained until the time
you set. Temperature returns to an energy­saving level after the timer expires, or the
“Occupied” period ends.

NOTE: This feature is available only

when programmed by the installer.

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Press to start

occupancy

Remote setback (commercial use)

During Occupied program periods, an occupancy sensor directs the thermostat to go
to REMOTE SETBACK settings when the room is empty. If someone is in the room,
it uses the Occupied program period settings. The thermostat ignores the occupancy
sensor during Unoccupied program periods.

If the thermostat is set up to be non-programmable, the sensor directs the thermostat
to go to REMOTE SETBACK settings when the room is empty. If someone is in the
room, then it follows the settings set by the user.

Depending on how your thermostat was installed, it may delay for up to 30 minutes
before switching to REMOTE SETBACK settings. This delay allows the room to stay
comfortable if the room is unoccupied for only a short time.

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Adjusting humidification settings

1 Touch MENU and select Humidification.

MENU

2 Select Auto.
3 Move the slider bar to select humidity level.

Humidificaon

4 Touch More Settings if frost or condensation

appears on the windows. Use a lower
number to prevent frost or condensation.
Use a higher number if indoor air is too
dry. Window Protection limits the amount of
humidity to prevent frost or condensation
on windows. See notes below.

5 Touch Done to save your settings. Touch

More

Sengs

Cancel to ignore changes.

NOTE: The thermostat will not run the

humidifier when the indoor humidity
has reached the “Window Limit” that is
displayed on the screen.

NOTE: Window Protection is available only

if an outdoor air sensor is installed.

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Adjusting dehumidification settings: residential use

This feature can control a dehumidifier or
use your air conditioner to reduce humidity.

1 Touch MENU and select Dehumidification.
2 Select Auto.
3 Move the slider bar to select humidity

level.

4 Touch Done to save your settings. Touch

Cancel to ignore changes.

NOTE: If your air conditioner is used to

control humidity, the temperature may
drop up to 3° F below your temperature
setting until humidity reaches the desired
level.

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Dehumidificaon

More

Sengs

MENU

Adjusting dehumidification settings: commercial use

This feature can control a dehumidifier or

MENU

use your air conditioner to reduce humidity.
1 Touch MENU and select Dehumidification.

Dehumidificaon

2 Select Auto.
3 Move slider bar to select humidity level.
4 Touch Done to save your settings. Touch

Cancel to ignore changes.

If your air conditioner is used to control
humidity, the thermostat may use the
following methods to maintain humidity:

• Cool from 1° to 5° F lower than your

More

Sengs

temperature setting.

• Run cooling for the minimum “on” time to
reduce humidity.

• Run cooling and heating at the same
time to reduce humidity without lowering
the temperature.

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Adjusting ventilation settings

1 Touch MENU, and select Ventilation.
2 Touch Setting, then select:

Auto: Ventilation runs as
programmed by the installer.

Off: Ventilation remains off unless
turned on using the timer.

On: Ventilation is always on.

3 Touch s or t to run ventilation

temporarily. To turn it off, set it to zero.

4 Touch More Settings to set maintenance

reminders and lockouts. Select Yes to
prevent ventilation from running during
the Sleep or Unoccupied (commercial)
program periods or when outdoor
conditions exceed values set by the
installer.

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MENU

Venlaon

Seng:

Automac

More

Sengs

NOTE: If set up for humidification

in heat mode, the ventilator
will turn on to remove excess
humidity if 10% or more above
your humidity setting.

Setting preferences

Preference menu options let you select
how the thermostat displays information or
responds to certain situations.

1 Touch MENU and select Preferences.
2 Select an option and follow prompts:

• Reminders to change filters

• Display heat/cool diagnostic alerts

• Utility Schedule options

• Fahrenheit/Celsius display

• 12/24-hour clock display

• Screen color and brightness

• Language choice

• Scheduling options

• Adaptive Intelligent Recovery

• Restore default schedule

• Daylight saving time

3 Touch Done to save your settings. Touch

Cancel to ignore changes.

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Preferences

MENU

Cleaning the thermostat screen

When you select the Clean Screen option,
the screen is locked so you don’t accidentally
change settings while you clean.

1 Touch MENU.
2 Select Clean Screen. A prompt asks if you

want to clean the screen for 30 seconds.

3 Touch Yes. A countdown timer displays

elapsed time until the screen is reactivated.

NOTE: Do NOT spray any liquid directly

on the thermostat. Spray liquids onto a
cloth, then use the damp cloth to clean
the screen. Use water or household glass
cleaner. Avoid abrasive cleansers.

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MENU

Clean Screen

Yes