Peco T4500 User manual

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• Large 4 square inch blue display
• 365-day, 20 holiday programmability
• 7-day, 5-1-1, 5-2 programming
• Common backplate
• Optimized ramp recovery
Performance PRO™ Series
T4000
Series
Gas
Electric Heat Pump
Oil
OPERATING
MANUAL
T4000 Non-Programmable Models
T4500 Programmable Models
Performance PR
O
™
O™ O
Series
Non-Programmable Models
Programmable Models

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Thank you for choosing a PECO® Performance PRO™ thermostat. The Performance PRO
T4000 Series is intended for use in residential and commercial environments. It is designed for
and can support up to 2-HEAT/ 2-COOL con gurations in conventional systems and 3-HEAT/
2-COOL con gurations in 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 T4000 Series is comprised of the T4000 non-programmable thermostat
models and the T4500 programmable thermostat models. The T4000 Series feature a 4 square
inch blue backlit display with dynamic menus, accessed using soft keys. All Performance PRO
T4000 Series offer the following standard features: auto-changeover, optional remote sensors,
occupancy sensors, up to  ve outputs, three levels of keypad lockout, a PIN access code,  lter
replacement reminder, and a heat/cool Demand Indicator. In addition, the T4500 programmable
models contain four scheduled events per day, temporary override, a 365-day calendar, and 20
holidays.
The T4000 Series can be powered by 24 VAC or batteries (both recommended), control a
minimum of 5 outputs, and monitor two external sensors. The T4000 Series mounts onto a
common PECO Performance PRO Series wallplate.
THE PECO PERFORMANCE PRO T4000 SERIESTHE PECO PERFORMANCE PRO T4000 SERIESTHE PECO PERFORMANCE PRO T4000 SERIES

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Table of Contents
T4000 Thermostat
The PECO Performance PRO T4000 Series .......................................................................................2
Quick reference: Default Display mode ...............................................................................................5
Quick reference: Home Display mode & navigation ............................................................................ 6
Quick reference: 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
T4500 Thermostat
Program the thermostat (T4500 models only) ................................................................................... 16
Program scheduled events ................................................................................................................17
Program override ...............................................................................................................................19
Program holiday ................................................................................................................................20
Set PIN access to Service Menus .....................................................................................................22
PECO compatible accessories ..........................................................................................................23
T4000 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-con gured to show user-selected items only (see Service Menu 520 in
“Performance PRO T4000 Series Installation Guide”).
Note: The Battery Indicator, Service Indicator, and Filter Indicator icons appear at bottom
of the 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 T4000 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
5
Up and Down
keys
6
Override key
Digital display

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QUICK REFERENCE: HOME DISPLAY SCREENQUICK REFERENCE: HOME DISPLAY SCREENQUICK REFERENCE: 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)
Setpoint
Temperature
(see pp. 16-19 )
System mode
Displays current
system mode
(see pp. 8, 14)
Current time
(see p. 11)
Current day
(see p. 11)
Keypad
Lockout
(see p. 10)
Service
Indicator
(see p. 10)
Override key
Press to override
scheduled events
(see p. 10)
Program Scheduled
Events (see p. 17)
Recovery
Indicates thermostat
is in recovery mode
Fan
Displays Fan/ Auto
mode when activated
(see pp. 9, 13)
Fan key
Press to enter
fan display
(see pp. 9, 13)
Filter indicator
Appears based on
user selection
(see pp. 10, 15)
Battery Indicator
Appears only when
battery is low
(see p. 10)

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PRESS ANY KEY TO BEGIN
System key
Used to control the operating mode of the Performance PRO T4000 Series thermostats.
The options available for the System display are speci ed in the Service Menus (see
“Performance PRO T4000 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 change over 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.
Note: Deadband is the user-de ned minimum difference between the Cool Setpoint and
Heat Setpoint (see Service Menu 380).
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
KEY OPERATIONKEY OPERATIONKEY OPERATION
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PRESS ANY KEY TO BEGIN
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 T4000 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.
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
KEY OPERATION (CONT.)KEY OPERATION (CONT.)KEY OPERATION (CONT.)
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3
4
5

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PRESS ANY KEY TO BEGIN
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  ashing.
Temporary Override - The active setpoint is taken from setpoints de ned in the Override
menu. (Override will  ash from the Home Display for the duration of the period.)
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  ashes 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 key pad 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  lter menu until the Done key is pressed.
After the Filter icon appears, pressing Done will restart the  lter timer.
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
KEY OPERATION (CONT.)KEY OPERATION (CONT.)KEY OPERATION (CONT.)
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Filter

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PRESS ANY KEY TO BEGIN
1. Press More to view menu options.
2. Press Clock to access menu options.
3. Press ▲/ ▼ to select 12 or 24 HR
mode, 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.
Note: Mo (numerical month) appears
8. Press ▲/ ▼to select current date.
Note: Days (numerical day) appears.
9. Press Done to  nish clock mode.
TEXTTEXTTEXT
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
SET THE CLOCK, MONTH, AND DAYSET THE CLOCK, MONTH, AND DAYSET THE CLOCK, MONTH, AND DAY
TEXTTEXTTEXTSET THE CLOCK, MONTH, AND DAYTEXTTEXTTEXTSET THE CLOCK, MONTH, AND DAYTEXTTEXTTEXTSET THE CLOCK, MONTH, AND DAYTEXTTEXTTEXT
PRESS ANY KEY TO BEGIN
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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When hour column fl ashes, press ▲/ ▼to adjust.
Menu advances right to minutes column, fl ashing.
After selecting “More,” select “Clock” to choose time
format preference.

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1. Press the lower left and lower right keys
simultaneously until the Service Menu
appears (100 appears at top with default
value  ashing below it.)
2. Go Back, Next, and Done appear as
menu options.
3. Press Next continuously until menu
“260” appears.
4. Press ▲/ ▼to select the desired
temperature display:
• “1” for Fahrenheit (default)
• “0” for Celsius
5. Press Done to complete selection.
SELECT FAHRENHEIT OR CELSIUS TEMPERATURESELECT FAHRENHEIT OR CELSIUS TEMPERATURESELECT FAHRENHEIT OR CELSIUS TEMPERATURE
Note: To custom con gure thermostat
settings, access more Service Menus
(See Table 2. Advanced Con guration
in the “Performance PRO T4000 Series
Installation Guide”).
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Note: After completing the instructions,
the Home Display shows the selected
temperature format.
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 T4000 Series
Installation Guide”).
SELECT THE FAN MODESELECT THE FAN MODESELECT THE FAN MODE
PRESS ANY KEY TO BEGIN
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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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 ▲/ ▼ and 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 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.
Note
: System modes available are
dependent upon which system type
is selected in Service Menus.
SELECT SYSTEM MODESELECT SYSTEM MODESELECT SYSTEM MODE
PRESS ANY KEY TO BEGIN
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Press ▲/ ▼ to scroll through options for system
preferences. The selected option fl ashes.
Setpoint is displayed in the upper-right area.

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PRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGIN
The Filter icon serves as a reminder to
change the furnace  lter (see note below).
When the  lter timer expires, the Filter icon
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 T4000
Series Installation Guide”).
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
RESET FILTER TIMERRESET FILTER TIMERRESET FILTER TIMER
PRESS ANY KEY TO BEGIN
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When the fi lter timer expires, the default Home
Display will automatically show the Filter icon.

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Each day has two or four scheduled events ( Occupied1, Occupied2, Unocc1, and Unocc2 ) per
day, depending on Service Menu con guration. Each one of these events 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 T4500 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 four scheduled events per day.
PROGRAM THE THERMOSTAT (T4500 MODELS ONLY)PROGRAM THE THERMOSTAT (T4500 MODELS ONLY)PROGRAM THE THERMOSTAT (T4500 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 ▲/ ▼and
Select Day to select 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
PRESS ANY KEY TO BEGIN
Note: To enter the same scheduled
events for multiple days continue pressing
Select Day (to underline highlighted
day/s) in Step 6, then select a block of
days to be programmed.
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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
2-11 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 EVENTS (CONT).PROGRAM SCHEDULED EVENTS (CONT).PROGRAM SCHEDULED EVENTS (CONT).
Note: To return to the menu of scheduled
events and continue programming, select
Next after Step 12.
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Note: To program 5-1-1 day or 5-2 days,
see Service Menu 100 ( “Performance PRO
T4000 Series Installation Guide”). Block-
programmed days  ash as a group.
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Press ▲/ ▼to select a desired Heat Setpoint for the
currently selected scheduled event.

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Override allows application of temporary heat
or cool settings.
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 de ned 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
12-hour period in System Auto mode.

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PRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGIN
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20 Holidays may be programmed. System
type shown supports 1-HEAT and 1-COOL.
1. Press More to view more options.
2. Press Holiday to enter menu.
3. Press ▲/ ▼to select holiday number
(1-20). Note: Month number and day of
month appear below in clock area.
4. Press Edit to select holiday month
(“Mo” icon will  ash).
5. Press ▲/ ▼to select a month
(numerical), then press Next.
6. Press ▲/ ▼ to select day (numerical)
that holiday starts (Days icon will  ash),
then press Next.
7. Press ▲/ ▼ to select holiday length,
which is number of days that the holiday
period lasts (1-99), then press Next.
Note: Performance PRO supports
up to 20 holidays, leap years, and
daylight-saving time.
Note: Press Override to
access
Holiday mode.
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGIN
PRESS ANY KEY TO BEGINPRESS ANY KEY TO BEGIN
PROGRAM HOLIDAY PROGRAM HOLIDAY PROGRAM HOLIDAY
PRESS ANY KEY TO BEGIN
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Press ▲/ ▼to select a month (e.g., 1) for the
holiday number.