Peco T8000 series User manual

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• Large 8 square inch blue display
• 7 available outputs, including economizer
• SD memory card interface
• 365-day, 20 holiday programmability
• 7-day, 5-1-1, 5-2 programming
OPERATING
MANUAL
T8000 Non-Programmable Models
T8500 Programmable Models
Performance PRO™ Series
T8000
Series

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Thank you for choosing a PECO® Performance PRO™ thermostat. The Performance PRO
T8000 Series is intended for use in residential and commercial environments. It is designed for
and can support up to 3-HEAT/ 2-COOL configurations in conventional systems and heat pump
applications. The Performance PRO also provides the capability to meet the requirements for
ASHRAE 90.1-2004 and California Building Code Title 24 (2008 edition).
The Performance PRO T8000 Series is comprised of the T8000 non-programmable thermostat
models and the T8500 programmable thermostat models. The T8500 model features an 8 square
inch blue backlit display with dynamic menus, accessed using soft keys. All Performance PRO
T8000 Series offer the following standard features: auto-changeover, optional remote sensors,
occupancy sensors, three levels of keypad lockout, a PIN access code, filter replacement
reminder, and a heat/cool Demand Indicator. The T8500 programmable models contain: up to four
scheduled events per day, a 365-day calendar, 20 holidays, holiday override, temporary override,
a Power Harvesting feature (also known as “power stealing”) to preserve battery life, Secure
Digital (SD) card capability (card not included), and optional humidity control (T8532-IAQ only).
The T8000 Series can be powered by 24 VAC or batteries or both (recommended). The T8000
Series can control up to 7 outputs and monitor three external sensors. The T8000 Series mounts
onto any PECO Performance PRO Series wallplate.
THE PECO PERFORMANCE PRO T8000 SERIESTHE PECO PERFORMANCE PRO T8000 SERIESTHE PECO PERFORMANCE PRO T8000 SERIES

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Table of Contents
T8000 Thermostat
The PECO Performance PRO T8000 Series .......................................................................................2
Quick reference: Default Display mode ...............................................................................................5
Quick reference: Home Display mode & navigation ............................................................................ 6
Quick reference: T8000 Home Display screen ...................................................................................7
Key operation .......................................................................................................................................8
Set the clock, month, and day ........................................................................................................... 11
Select Fahrenheit or Celsius temperature .........................................................................................12
Select the fan mode ...........................................................................................................................13
Select system mode ..........................................................................................................................14
Reset lter timer .................................................................................................................................15
T8500 Thermostat
Program the thermostat (T8500 models only) ................................................................................... 16
Program scheduled events ................................................................................................................17
Program override ...............................................................................................................................19
Select humidity setpoints ..................................................................................................................20
Program a holiday .............................................................................................................................21
Load SD Card settings .......................................................................................................................23
T8000 Series Product Specifications ......................................................................................24

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!CAUTION!
• READ INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO OPERATE THIS THERMOSTAT.
• FOLLOW THE PERFORMANCE PRO INSTALLATION INSTRUCTIONS BEFORE PROCEEDING.
• Failure to observe safety information and comply with instructions could result in PERSONAL INJURY,
DEATH AND/OR PROPERTY DAMAGE.
• Use this thermostat only as described in this manual.
• This is a 24 VAC low-voltage thermostat. Do not install on voltages higher than 30 VAC.
• Contact a qualied service person if at any time the thermostat does not operate properly.
• Use care to avoid static discharge to the thermostat.
• To avoid electrical shock or damage to equipment, disconnect power before installing or servicing and use
only wiring with insulation rated for full thermostat operating voltage.
• To avoid potential re and/or explosion, do not use in potentially ammable or explosive atmospheres.
• This product, when installed, will be part of an engineered system whose specications and performance
characteristics are not designed nor controlled by PECO.
• All wiring and applications must conform to local and national building codes and ordinances Applications
and national codes must be reviewed prior to installation to assure the installation is functional and safe.
IMPORTANT NOTE: This thermostat was shipped with factory default settings. The thermostat’s installer
may have congured the thermostat differently from the factory-default settings, and may have modied
or disabled certain features. Contact the installer or a service technician if there are questions about the
thermostat’s conguration.

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QUICK REFERENCE: DEFAULT DISPLAY MODEQUICK REFERENCE: DEFAULT DISPLAY MODEQUICK REFERENCE: DEFAULT DISPLAY MODE
Default Display
The factory programmed settings show the time, temperature, and setpoint. This is called
the Default Display. The Default Display appears after a short period of inactivity. The Default
Display can be custom configured to show user-selected items only (see Service Menu 520 in
“Performance PRO T8000 Series Installation Guide”).
Note: The Battery Indicator, Service Indicator, Filter Indicator, and Secure Digital (SD)
icons appear at bottom of digital display if user action is required.
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QUICK REFERENCE: HOME DISPLAY MODE & NAVIGATIONQUICK REFERENCE: HOME DISPLAY MODE & NAVIGATIONQUICK REFERENCE: HOME DISPLAY MODE & NAVIGATION
Navigate submenu options to customize thermostat settings. Available options are:
Next - Advances to the next menu item in sequence; current selections are held in
temporary memory until user completes the menu sequence by pressing “Done.”
Go Back - Returns back one step in menu sequence or reverts to Home Display.
Changes are not saved if user selects “Go Back” from the first option in sequence.
Done - Saves settings and reverts to the Home Display.
Cancel - Discards changes and reverts to the Home Display.
Home Display
The Performance PRO T8000 Series has two ▲/ ▼(Up and Down) keys and four soft keys (1-3;
6 below). Press any key to enter Home Display from Default Display. Press soft keys to enter
submenus. Soft keys have multiple functions; available submenus depend on menu navigation.
1System key
4Demand
Indicator
3More key
2Fan key
SD card slot
5
Up and Down
keys
6
Override key
Digital display

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QUICK REFERENCE: T8000 HOME DISPLAY SCREEN QUICK REFERENCE: T8000 HOME DISPLAY SCREEN QUICK REFERENCE: T8000 HOME DISPLAY SCREEN
System key
Press to enter
system settings:
Off/Heat/Cool/
Auto (see pp. 8, 14)
More key
Press to view more
options from Home
Display (see p. 9)
Current time
(see p. 11)
Current day
(see p. 11)
Keypad
Lockout
(see p. 10)
Service
Indicator
(see p. 10)
SD card
(see p.10)
Override key
Press to override
scheduled events
(see pp. 9, 19)
Current temperature
(see p. 12)
Fan
Displays Fan/Auto/
On when activated
(see pp. 9, 13)
Recovery
Indicates thermostat
is in recovery mode
Fan key
Press to enter
fan display
(see pp. 9, 13)
Battery Indicator
Appears when
battery is low
(see p. 10)
Setpoint
temperature
(see pp. 16-22)
System mode
Displays current
system mode
(see pp. 8, 14)
Program
scheduled
events
(see p.17 )

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KEY OPERATIONKEY OPERATIONKEY OPERATION
System key
Used to control the operating mode of the Performance PRO T8000 Series thermostats.
The options available are dependent on System Type selected in Service Menu 110 (see
Advanced Configuration in “Performance PRO T8000 Series Installation Guide”).
System modes are:
HEAT – Select for the system to operate in heating mode only. Only one setpoint is
displayed.
COOL – Select for system to operate in cooling mode only. Only one setpoint is displayed.
AUTO – Allows system to control to both the Heat and Cool Setpoints. The system will
automatically changeover between heating and cooling modes as room temperature
varies. Cool Setpoint must always be greater than Heat Setpoint by the deadband value.
OFF – Disables all thermostat outputs; only zone temperature and time are displayed.
EMERGENCY (Em)– Emergency heat can be used when the Heat Pump cannot keep up
with the heat load. Use Service Menu 110 (System Type 6 & 11) to enable.
Note: Deadband is the user-de ned minimum difference between the Cool Setpoint and
Heat Setpoint (see Service Menu 380).
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Fan key
Used with two different menu options:
ON - Continuous fan operation.
AUTO - Fan is activated only when there is demand for heat or cool, with some exceptions.
Note: Several Service Menu options affect the fan operation (See Advanced
Con guration in the “Performance PRO T8000 Series Installation Guide.”)
More key
Used to view more menu options. From the Default Display, press More to show more menu
options that may be accessed by pressing the soft keys.
Demand Indicator
Light emitting diode (LED) on lower left front panel that displays red when heating and green
when cooling. Available only when 24 VAC power is connected to the thermostat.
Up and Down keys (▲/▼)
Used in menus to increase or decrease variable settings, or switch to the next input.
Note: Pressing ▲/▼ keys show the Override display unless Holiday mode is set.
Override key
Used to create a temporary override of current setpoint temperature. Pressing Override will
display the “Next” and “Done” options and the setpoint will begin flashing.
KEY OPERATION (CONT.)KEY OPERATION (CONT.)KEY OPERATION (CONT.)
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Temporary Override – The active setpoint is taken from setpoints de ned in the Override
menu. (In Home Display, “Override”  ashes during the override time period if selected.)
Service Indicator
Icon appears to notify the user that the remote temperature sensors are reading out of
range.
Battery Indicator
Icon appears only when the battery level is low and flashes when the battery level is critically
low. Two AA alkaline batteries (2.6 – 3.1VDC) have an approximate 1-year life expectancy.
Keypad Lockout
Icon appears if any type of keypad lockout is active. Keypad lockout blocks access to certain
features of the thermostat. (See Service Menu 340 to enable Keypad Lockout).
Filter Indicator
Icon appears in the Default Display when the reminder timer expires (see Service Menu
230). The thermostat will continue to return to the filter menu until the Done key is pressed.
After the Filter Indicator icon appears, pressing Done will restart the filter timer.
Secure Digital (SD)
Icon appears (flashes) when SD card is inserted. Optional SD card not provided. SD card
functionality allows user to upload/download settings to/from a PECO-formatted SD card
(see also “Load SD card settings”).
KEY OPERATION (CONT.)KEY OPERATION (CONT.)KEY OPERATION (CONT.)
Filter

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1. Press More to view menu options.
2. Press Clock to access menu options.
3. Press ▲/ ▼ to select 12 or 24 HR
format, then press Next.
4. Press ▲/ ▼to select clock hour, then
press Next.
5. Press ▲/▼to select clock minutes, then
press Next.
6. Press ▲/ ▼ to select clock year, then
press Next.
7. Press ▲/ ▼ to select current month,
then press Next.
8. Press ▲/ ▼to select current date.
Days and Mo (month) appears.
9. Press Done to  nish clock mode.
SET THE CLOCK, MONTH, AND DAYSET THE CLOCK, MONTH, AND DAYSET THE CLOCK, MONTH, AND DAY
Note: At any time, press Go Back to
return to the previous menu, Next to
advance and view more options, or Done
to save changes and return home.
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PRESS ANY KEY TO BEGIN
In clock mode press ▲/ ▼to select clock hour.

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1. Press the lower left and lower right keys
simultaneously for about  ve seconds.
Go Back, Next, and Done appear.
2. Press Next continuously until menu
“260” appears.
3. In Service Menu 260, Press ▲/ ▼to
select the desired temperature display:
• “1” for Fahrenheit (default)
• “0” for Celsius
4. Press Done when you have completed
your selection.
SELECT FAHRENHEIT OR CELSIUS TEMPERATURESELECT FAHRENHEIT OR CELSIUS TEMPERATURESELECT FAHRENHEIT OR CELSIUS TEMPERATURE
Note: To custom configure thermostat
settings, access more Service Menus
(See Table 2. Advanced Configuration
in the “Performance PRO T8000 Series
Installation Guide”).
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Note: After you complete your selection,
the Home Display will appear with
temperature in the format selected.
After entering the Service Menu mode, press Next
continuously until menu “260” appears.

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1. Press Fan to set fan operation.
2. Press ▲/ ▼ to select “On,” or “Auto.”
Note: Selected option  ashes.
3. Select Done to save changes.
Note: “On” mode indicates continuous
output. “Auto” mode indicates that fan
is activated only when there is demand
for heat or cool. Some exceptions
apply (see Advanced Con guration in
the “Performance PRO T8000 Series
Installation Guide”).
SELECT THE FAN MODESELECT THE FAN MODESELECT THE FAN MODE
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PRESS ANY KEY TO BEGIN
In Fan mode, p ress ▲/ ▼to select desired option.

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1. Press System to select system
preferences.
Note: Selected option  ashes.
2. Press ▲/ ▼ to select Heat, Cool,
Auto, Off, or Em (Emergency).
3. Press Done to save changes.
In “Heat” and “Cool” modes, only one
setpoint is displayed for each, and only the
selected mode (e.g.,Heat) is applied. “Auto”
mode switches automatically between Heat
and Cool. Auto mode controls the room’s
temperature to the programmed Heat
and Cool Setpoints. “Off” mode disables
all thermostat outputs; and only the zone
temperature and clock are displayed. If
Emergency (Em) heat is enabled in a Heat
Pump system, Emergency acts as the primary
heat source.
SELECT SYSTEM MODESELECT SYSTEM MODESELECT SYSTEM MODE
Note
: System modes available
depend upon which system type is
selected in Service Menus.
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PRESS ANY KEY TO BEGIN
Press ▲/ ▼ to scroll through options for system
preferences. The selected option flashes.
Setpoint is displayed on the right side of the screen.

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The Filter Indicator serves as a reminder to
change the furnace  lter (see note below).
When the  lter timer expires, the Filter
Indicator will be lit continuously.
1. From the Default Display, press any
key to enter the Filter mode. (Filter,
Go Back and Done appear)
2. Press Done to reset the  lter timer.
Note: Pressing Done restarts  lter timer
with previous time value selected.
3. Press Go Back to bypass the reminder
and return to the Home Display.
Note: The thermostat will return to the
Filter menu from the Default Display until
Done is selected (see Service Menu
230 in the “Performance PRO T8000
Series Installation Guide”).
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RESET FILTER TIMERRESET FILTER TIMERRESET FILTER TIMER
PRESS ANY KEY TO BEGIN
When the filter expires, the Home Display will
automatically show the Filter Indicator icon.

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Each day has two or four scheduled events ( Occupied1, Occupied2, Unocc1, and Unocc2 ) per
day, depending on Service Menu configuration. Each event can be programmed with a start
time and Heat and Cool Setpoints. Heat Setpoint controls system heating during cold weather.
Cool Setpoint controls the cooling system during hot weather. The T8500 is preprogrammed
with factory default settings for seven days of the week as follows:
Time Period Start Time Heat Setpoint
Temperature
Cool Setpoint
Temperature
Occupied1 8:00 am 70° F (21° C) 75° F (24.0° C)
Unocc1 10:00 pm 55° F (10° C) 85° F (29.5° C)
Occupied2 — — —
Unocc2 — — —
Note: To change the preprogrammed times and/or setpoint temperatures, follow the
instructions under “Program scheduled events.”
Note: See Service Menu 240 to enable two or four scheduled events per day.
PROGRAM THE THERMOSTAT (T8500 MODELS ONLY)PROGRAM THE THERMOSTAT (T8500 MODELS ONLY)PROGRAM THE THERMOSTAT (T8500 MODELS ONLY)
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Schedule two or four events per day:
Occupied1, Occupied2, Unocc1, and Unocc2.
1. Press More to view options.
2. Press Schedule to enter main menu.
3. Press ▲/ ▼to highlight day.
Note: Selected day  ashes. (Optional:
Select View to modify existing event.)
4. Press Edit to apply scheduled events
for the selected day(s).
5. Press Select Day. Note: Selected day
 ashes. (Continue pressing ▲/ ▼then
press Select Day for multiple days.)
6. Press ▲/ ▼to highlight the day(s) to be
programmed. Note: Selected day(s) for
scheduled events must be underlined.
7. Press Next to advance to event.
PROGRAM SCHEDULED EVENTSPROGRAM SCHEDULED EVENTSPROGRAM SCHEDULED EVENTS
Note: At any time, press Go Back to
return to the previous menu, Next to
advance and view more options, or Done
to save changes and return home.
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PRESS ANY KEY TO BEGIN
Press Select Day to underline highlighted day
to which a scheduled event will be applied.

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8. Press ▲/ ▼ to select a scheduled event
(e.g, Occupied1, etc.), then Next .
9. Press ▲/ ▼to schedule start time for
event (in 15-minute periods), then Next.
Now select a Heat Setpoint and/ or Cool
Setpoint for the scheduled event (available
options depend upon system type selected).
10. Press ▲/ ▼to select desired Heat
Setpoint, then press Next.
11. Press ▲/ ▼to select desired Cool
Setpoint, then press Next. Note: The
next event (e.g., Unocc1) begins  ashing
after Next is selected. Complete steps
3-11 for each scheduled event.
12. Press Done to exit schedule mode.
Note: Pressing Go Back after step 11
will show Select Day on display.
PROGRAM SCHEDULED EVENTSPROGRAM SCHEDULED EVENTSPROGRAM SCHEDULED EVENTS
Note: To return to the menu of scheduled
events and continue programming, select
Next after Step 11.
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Note: To program 5-1-1 day or 5-2 days,
see Service Menu 100 ( “Performance PRO
T8000 Series Installation Guide”). Block-
programmed days flash as a group.
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PRESS ANY KEY TO BEGIN
Press ▲/ ▼to select a desired Heat Setpoint for the
currently selected scheduled event (Occupied1).

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Override allows application of temporary heat
or cool settings. (Example uses System Auto.)
1. Press Override, or ▲/ ▼key.
Note: Setpoint  ashes. “Hold until” time
appears and is changed to show length
of override (up to the maximum hold time
speci ed in Service Menu 395).
2. Press ▲/ ▼to select a Cool Setpoint,
then press Next.
3. Press ▲/ ▼to select a Heat Setpoint,
then press Next.
4. Press ▲/ ▼to adjust time (in 15-minute
periods) until override remains in effect.
5. Press Done to save changes and exit.
Note: Override remains ( ashing) in
effect until the time period ends.
Note: Press Cancel to exit Override.
PROGRAM OVERRIDEPROGRAM OVERRIDEPROGRAM OVERRIDE
PRESS ANY KEY TO BEGIN
Note: Setpoints available depend on the
system mode selected (see “Select System
Preferences”) . Override display options
can be defined in Service Menus .
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Note: The installer setup can limit the
length of time for an override to 1, 2, 3, or
4 hours beyond the current time.
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Example shows how to select a Cool Setpoint for a
temporary period in System Auto mode.

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Note: Instruction assumes a humidity
sensor is installed and dehumidifier is
enabled (see Service Menu 490).T8532-
IAQ models must be ordered separately.
If the thermostat is model T8532-IAQ, a
humidity sensor is present. A humidity sensor
allows user to set dehumidify and humidify
control setpoints.
1. Press More to view options.
2. Press Humidity to view more options.
Note: “DE” appears in clock area. The
Dehumidify Setpoint shows with %.
3. Press ▲/ ▼to select the desired
Dehumidify Setpoint.
4. Press Next.
5. Press ▲/ ▼to select the desired
Humidify Setpoint.
6. Press Done. Settings are saved.
SELECT HUMIDITY SETPOINTS SELECT HUMIDITY SETPOINTS SELECT HUMIDITY SETPOINTS
Press Humidity to view more options and to select a
Dehumidify Setpoint.
Adjust the Dehumidify Setpoint.
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PRESS ANY KEY TO BEGIN