Peco Performance Pro T4900 School User manual
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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Thank you for choosing the PECO® Performance PRO™ T4900 School Series™ thermostat.
The T4900 provides comfort conditioning for educational environments, reducing energy
consumption and the bottom line. One-touch simplicity means users simply push the
“Teacher” key to apply an energy-ef cient School Schedule. The T4900 supports up to
3-HEAT/ 2-COOL con gurations in conventional and heat pump applications. Users can
choose between two modes in which to operate the T4900: as a standard Performance
PRO or as a School Series.
The Performance PRO T4900 School Series is comprised of the T4932SCH-001
programmable and the T4932SCH-002 programmable thermostat with humidi cation/
dehumidi cation control. T4900 School Series standard features include: 4 square inches
of blue backlit display; Secure Digital (SD) card interface; locking cover; auto-changeover;
School Schedule; inputs for occupancy/ remote sensors; three levels of keypad lockout
and PIN access; furnace and UV lter reminders; Heat/Cool Demand Indicator; a 365-day
calendar, 20 holidays; Power Harvesting (a.k.a. “power stealing”); and humidity control
(T4932SCH-002 only).
The T4900 Series can be powered by 24 VAC or batteries or both (recommended). The
T4900 Series can control up to 7 outputs and monitor three external sensors (including a
CO2 sensor). The T4900 Series mounts on any PECO Performance PRO Series common
wallplate.
The PECO Performance PRO thermostat is intended for use in conventional and heat
pump applications.
• System mode selections: Off-Heat-Cool-Auto-Emergency
• Stages: 1 Heat/1 Cool, 2 Heat/1 Cool, 1 Heat/2 Cool; 2 Heat/ 2 Cool; 3 Heat/ /2 Cool
• Fan control: Cycling (Auto) or Continuous (On); 1 Speed
• Permanent memory: All device settings are stored in permanent memory.
• Connections for Remote Sensors (indoor/ outdoor/ occupancy/ CO2)
• SD card interface (card not included)
•
•
•
Temperature Control
Range: 50° to 90° F (10° to 32° C)
Differential: 1° F (0.5°C)
Input Power: 24 VAC (20-30 VAC) 50/60 Hz (+/- 10%) or AA alkaline batteries
(both recommended); 5mm terminals accept 14-24 AWG
stranded or solid wire.
Operating Temperature: 0° to 120°F (-17° to 48°C)
Shipping Temperature: -20° to 130°F (-28° to 54°C)
Operating Humidity: 5% to 95% RH, non-condensing
Physical Dimensions: T4900 Thermostat: 4.3” H x 5.7” W x 1.3”D
with 2.7” x 1.5” / 4.05 square inch liquid crystal display (LCD)
Output Ratings
Voltage (50/60 Hz): 20-30 VAC
Current: 0.02-1.0 A per terminal; W1 (B/O), W2 (AUX), G, A, E, Y1, Y2.
Note: Collectively, total current draw must not exceed 2.5 A.
Select an appropriate thermostat location
Locate the thermostat about ve feet (1.5 m) above the oor on a wall in an area with good
ventilation and an average temperature, where it will be responsive to changes in room
temperature.
The Performance PRO T4900 School Series may be mounted on a:
• Horizontal or vertical 2” X 4” device box
• Horizontal 4” X 4” device box
• Flat surface
Do locate the thermostat where it can be affected by:
• Direct sunlight
• Drafts or dead areas behind doors
• Radiant heat from appliances
• Concealed pipes or chimneys
• Outside walls or unheated/uncooled areas
Required components (not included, unless otherwise speci ed):
• Two new AA batteries (included)
• Screws and wall anchors (included)
• Screwdrivers: Phillips (for wallplate); small athead (for terminal blocks)
• Drill with 3/16” drill bit (or 7/32” for plaster)
• Wirecutter and stripper
• Level
• Performance PRO School Series T4900 Thermostat (included)
• Performance PRO School Series T4900 Thermostat Operating Manual (included)
www.pecomanufacturing.com/controls/
• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO INSTALL,
OPERATE, OR SERVICE THIS THERMOSTAT.
• Failure to observe safety information and comply with instructions could result in
PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE.
• 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.
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered system whose
speci cations and performance characteristics are not designed or controlled
by PECO. Review applications and national and local codes to assure that the
installation will be functional and safe.
▲
i
T4900
▲
Digital display with backlight
Teacher/
Override key
Keypad Lockout,
Battery Indicator,
Service Indicator
System mode
System key
Temperature
(indoor)
Current day
Up and Down
keys ▲/ ▼
Fan key
SD Card
Interface
SD Card Indicator
More key
Current time
Demand
Indicator
Fan (On/Auto)
Recovery mode
Setpoint
temperature
Figure 1. T4900 Thermostat (Home Display).
Mounting holesMounting holes
Figure 2. T4900 Thermostat back view (with wallplate attached).
Wiring passage
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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1. Position the wallplate on the wall with the directional arrow pointing up (see Fig. 3) and
terminal blocks facing outward.
2. Pull equipment wires through the wallplate wiring passage (see Fig. 3).
3. Use a level to determine the best horizontal wallplate mounting position.
4. Mark positions of screw holes (two at minimum) with a pencil and remove wallplate.
5. Drill holes at pencil-marked locations (3/16” for drywall, 7/32” for plaster).
6. Insert the wall anchors in the holes, tapping them into place.
7. Mount the wallplate onto the wall and insert screws through mounting holes. Assure
that all loose wires come through the center opening of the wallplate (see Fig. 3).
8. Cap off any unused wires and terminate properly according to local building codes.
1. Select the terminal designations that correspond to the system type (see Table 1).
Conventional Terminal Letters Heat Pump Terminal Letters
Unswitched side, 24 VAC Unswitched side, 24 VAC
Stage 1 Heat Reversing Valve
Stage 2 Heat Auxiliary (Stage 3 Heat)
Fan Fan
Economizer/Damper/
Humidity Economizer/Damper/
Humidity
Stage 3 Heat Emergency Heat
Stage 1 Cool Compressor Stage 1, Heat /Cool 1
Stage 2 Cool (or Dehumidify) Compressor Stage 2, Heat /Cool 2
(or Dehumidify)
Power for heating,
switched side, 24 VAC Power for heating,
switched side, 24 VAC
Power for cooling,
switched side, 24 VAC Power for cooling,
switched side, 24 VAC
Sensor Common Sensor Common
Indoor/ Outdoor
Remote Sensor Indoor/ Outdoor
Remote Sensor
Occupancy Sensor/
Setback Input Occupancy Sensor/
Setback Input
CO² Sensor/
Outdoor Remote Sensor CO² Sensor /Outdoor Remote Sensor
with Heat Pump Compressor Lockout*
System Type 1: 1H/1C Conventional System Type 2: 1H/1C Heat Pump
TERM Function TERM Function
C Common C Common
W1 Heat B/O Reversing Valve
W2 AUX
G Fan G Fan
A Economizer/Damper A Economizer/Damper
E E
Y1 Cool Y1 Compressor
Y2 Y2
RH Power for Heating RH Power for Heating
RC Power for Cooling RC Power for Cooling
System Type 3: Heat only (without fan) System Type 4: Heat only with fan
TERM Function TERM Function
C Common C Common
W1 Heat W1 Heat
W2 W2
G G Fan
A Economizer/Damper A Economizer/Damper
E E
Y1 Y1
Y2 Y2
RH Power for Heating RH Power for Heating
RC RC
System Type 5: Cool only System Type 6: 2H/1C Heat Pump (Aux.)
TERM Function TERM Function
C Common C Common
W1 B/O Reversing Valve
W2 AUX Auxiliary Heat
G Fan G Fan
A Economizer/Damper A Economizer/Damper
E E Emergency Heat
Y1 Cool Y1 Compressor
Y2 Y2
RH Power for Heating RH Power for Heating
RC Power for Cooling RC Power for Cooling
System Type 7: 2H/2C Conventional System Type 8: 2H/1C Conventional
TERM Function TERM Function
C Common C Common
W1 Heat 1 W1 Heat 1
W2 Heat 2 W2 Heat 2
G Fan G Fan
A Economizer/Damper A Economizer/Damper
E E
Y1 Cool 1 Y1 Cool
Y2 Cool 2 Y2
RH Power for Heating RH Power for Heating
RC Power for Cooling RC Power for Cooling
System Type 9: 1H/2C Conventional System Type 10: 2H/2C Heat Pump
TERM Function TERM Function
C Common C Common
W1 Heat B/O Reversing Valve
W2 AUX
G Fan G Fan
A Economizer/Damper A Economizer/Damper
E E
Y1 Cool 1 Y1 Compressor 1
Y2 Cool 2 Y2 Compressor 2
RH Power for Heating RH Power for Heating
RC Power for Cooling RC Power for Cooling
*Note: Heat Pump Compressor Lockout
requires connection of Outdoor Remote
Sensor to S1 or S3.
i
▲
Figure 3:
Position
the wallplate
on the wall.
Pull wires
through
wiring passage.
wiring passage
terminal blocks enlarged
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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System Type 11: 3H/2C Heat Pump System Type 12: 3H/1C Conventional
TERM Function TERM Function
C Common C Common
B/O Reversing Valve W1 Heat 1
AUX Auxiliary Heat W2 Heat 2
G Fan G Fan
A Economizer/Damper A Economizer/Damper
E Emergency Heat E Heat 3
Y1 Compressor 1 Y1 Cool 1
Y2 Compressor 2 Y2
RH Power for Heating RH Power for Heating
RC Power for Cooling RC Power for Cooling
System Type 13: 3H/2C Conventional
TERM Function
C Common
W1 Heat 1
W2 Heat 2
G Fan
A Economizer/Damper
E Heat 3
Y1 Cool 1
Y2 Cool 2
RH Power for Heating
RC Power for Cooling
2. Using a small athead screwdriver, loosen the screws on the terminal blocks that
correspond to the system type (see Table 1).
3. Strip the insulation of each wire at a proper length (about 1/4” or 64 cm).
4. On the wallplate, insert wires into the terminal blocks that correspond to the system
type, then re-tighten each screw for each terminal (see Fig. 4, enlarged area).
5. Assure that no uninsulated wires are exposed: Cap off and place a wire-nut on any
unused wires. Assure that the attached wires t into the cavity on the back side of the
thermostat.
1. Choose from the following options to power the thermostat.
The T4900 School Series will operate on 24VAC power and/or two AA batteries (both are
recommended). Choose from three methods to connect power to the thermostat.
• Batteries only (AA alkaline)
• 24 VAC direct connection only
• 24 VAC with AA battery backup (highly recommended)
: Connect the common side of the transformer to the “C”
screw terminal of the thermostat wallplate. Assure that the metal jumper connects “RC”
and “RH.” Connect power side to the RC/RH and assure that the jumper remains in place.
The T4900 School Series is shipped with a jumper connecting
terminals RH and RC. If the heating and cooling equipment do not use separate
transformers, leave this jumper in place. If separate transformers are required, remove
this jumper. With the jumper removed, connect RC to the power side of the cooling
transformer. Connect RH to the power side of the heating transformer; then connect both
the heating and cooling commons together to terminal C (Common).
1. Insert two AA batteries (included) into the back compartment of the thermostat, where
indicated (see Fig. 5).
2. Remove the plastic insulator tab from the back side of the thermostat (see Fig. 6).
IMPORTANT: The insulator tab must be removed before setting the real-time clock.
When power is rst applied to the thermostat, it will activate the clock display (see Fig. 7).
It is recommended that time and day are entered before performing advanced
con guration. Follow the procedure below to set the clock, month, and day.
1. Press ▲/ ▼ to select 12 or 24 HR mode, then press Next.
2. Press ▲/ ▼to select clock hour, then press Next.
3. Press ▲/▼to select clock minutes, then press Next.
4. Press ▲/ ▼ to select clock year, then press Next.
5. Press ▲/ ▼ to select current month, then press Next. : Mo (month) appears.
6. Press ▲/ ▼to select current date. : Days appears.
7. Press Done to nish clock mode.
1. Press any key to enter the Home Display.
2. Press System to enter system settings.
3. Press ▲/ ▼to select “Off,” then press Done.
4. Press Fan key to enter fan mode.
5. Press ▲/ ▼to select “Auto,” then press Done.
Perform advanced con guration and program the desired schedule before attaching the
thermostat to the wallplate. Advanced con guration is done by simultaneously pressing the
lower left and lower right keys for about ve seconds (see Fig. 8), which gives user access
to Service Menus. Use Table 2 of this Installation Guide to set each desired Service Menu
item. Advanced con guration allows the user to con gure the thermostat to match the
system type and to customize several thermostat settings.
▲
Figure 5.
Insert two AA batteries
in back of thermostat.
Figure 6.
Remove the insulator
tab from thermostat
before operation.
Insulator tab
Figure 4. Insert wires
into appropriate
terminal blocks.
Enlarged area
shows wire
insertion point
above terminal
block.
Figure 7.
Clock must be set
before performing
advanced
confi guration.
Figure 8.
Access Service Menus
by pressing the
lower left and
lower right keys
simultaneously.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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1. Position the thermostat slightly above the mounted wallplate (see Fig. 9), then secure
the hooks on the back side of the thermostat to the hinge pockets on the wallplate.
2. Align the pins on the back side of the thermostat with the terminal blocks on the
wallplate.
3. Gently bring down the thermostat onto the wallplate so the pins on the back of the
thermostat t into the terminal blocks on the wallplate (see Fig. 10).
4. Attach the retaining screw to the underside of the thermostat as shown (see Fig. 10).
System test veri cation is highly recommended to verify thermostat operation. Follow at
least one procedure in the system tests below. Refer to the Service Menus (see Table 2)
for more system tests. For all system tests, press to continue to the following system
test, which is the next available Service Menu. Press only if nished performing all
system tests. Pressing exits the Service Menus and turns off all active outputs.
1. On the thermostat, press the lower left and lower right keys simultaneously for about
ve seconds. Next, Go Back, and Done appear (see Fig. 11).
2. Press Next until Service Menu 610 appears in the display.
(Default value “00” appears below Service Menu.)
3. In Service Menu 610, press ▲/ ▼to select option “01,” Heat Stage 1 (see Fig.12).
: If 01 is selected, the thermostat will activate the associated output for up to 10
minutes. The user should observe that the fan output (with heat) turns on. The user
may also test more stages of heat according to what is available for the system type.
4. Press Done to complete the system test and exit the Service Menus. After verifying
the system test, the outputs are disabled and the fan will stop.
Next
The following instructions assume that the user enters the Service Menus from the Home
Display; it does not assume that the user has followed in sequence from the previous
section. If continuing from the previous section on this page, skip to Step 2 below.
1. On the thermostat, press the lower left and lower right keys simultaneously for about
ve seconds. : Next, Go Back, and Done appear (see Fig. 13).
2. Press Next until Service Menu 620 appears in the display.
(The default value “00” for appears below Service Menu.)
3. In Service Menu 620, press ▲/ ▼to select option “01” (to enable fan output).
If 01 is selected, the thermostat will activate the associated output for up to 10
minutes. The user should observe that the fan output will turn on.
4. Press Done to complete the system test. After verifying the system tests, the outputs
are disabled.
Next
Figure 13.
Service Menu
620 allows user
to perform a
System Test
Fan.
Retaining screw
Figure 10.
Mount the thermostat
so pins on back fi t into
the terminal blocks on
the wallplate.
Figure 9.
Secure the hooks
on the back side of
the thermostat to the
wallplate.
Figure 11.
Service
Menu 610
allows user
to perform
System Test
(Heat).
Service Menu
Default value
(appears
automatically)
Figure 12.
Press Done
to complete
test and exit
Service Menus
or Next to
continue to the
next test.
Service Menus
continue to the
Figure 14.
Press Done
to complete
testing and
exit Service
Menus,
or Next to
continue
tests.
620 allows user
Service Menu
Default value
(appears
automatically)
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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To access Service Menus, simultaneously press lower left and lower right keys. Service Menu availability is dependent upon system type and upon system conguration. For abbreviation
in text, SM=Service Menu.
Schedule Format 0-4 1 Select the desired schedule format. Select 0-3: Performance PRO, standard format; or select 4: School
Schedule format.
0 = nonprogrammable
1 = programmable
2 = 5-1-1 schedule
3 = 5-2 schedule
4 = School Schedule
Daylight-Saving
Time
0,1 0 Select daylight-saving time as it follows standard format in U.S.: It begins second Sunday of March at
2:00 AM and ends on the rst Sunday of November at 2:00 AM.
0 = Disabled
1 = Enabled (2007 U.S. Format)
System Type 1-13 1 Select the appropriate system conguration (determines available Service Menus).
1 = 1 Heat/1 Cool conventional
2 = 1 Heat/1 Cool heat pump
3 = Heat only without fan (2-wire systems)
4 = Heat only with fan
5 = Cool only
6 = 2 Heat/1 Cool heat pump (with auxiliary heat) and Emergency (Em) heat
7 = 2 Heat/2 Cool multistage conventional
8 = 2 Heat/ 1 Cool multistage conventional
9 = 1 Heat/ 2 Cool multistage conventional
10 = 2 Heat/ 2 Cool heat pump (no auxiliary heat)
11= 3 Heat/ 2 Cool heat pump (with auxiliary heat) and Emergency (Em) heat
12 = 3 Heat/ 1 Cool conventional
13= 3 Heat/ 2 Cool conventional
Fan Control
(heating)
0,1 0 0 = Fossil Fuel: Gas/Oil/Propane heat (equipment controls heating fan)
1 = Electric Furnace (thermostat controls heating fan)
Changeover valve
(B/O terminal)
0,1 0 0 = B/O terminal controls valve in cooling
1 = B/O terminal controls valve in heating
Auxiliary Heat 0,1 0 0 = Electric backup heat
1 = Fossil fuel backup heat
Backlight 0,1 0 0 = Backlight temporarily on
1 = Backlight always on (low intensity, 24V only)
Remote Sensors/
CO2 Sensor
0-8 0 Select sensor if used. Contact PECO for information on the T4900 School Series Indoor Remote Zone
Sensor.
0 = No Sensor
1 = Indoor Sensor
2 = Outdoor Sensor display only
3 = Outdoor Sensor display and lockout control
4 = Indoor, Outdoor Sensor display only
5 = Indoor, Outdoor Sensor display and lockout control
6 = S3 input congured for CO2 sensor, no indoor sensor.
7 = S3 input congured for CO2 and S1 for indoor sensor.
8 = S3 input congured for CO2 and S1 for outdoor sensor.
System Shutdown
(for S1 Terminal)
0-4 0 A dry contact switch can be connected to S1 input on the T4900 terminal block. When detected in an
active state, all HVAC outputs are turned OFF (same as system off), and Service Indicator (wrench) is
displayed on LCD.
0 = Probe, no switch (default)
1 = Shutdown on open
2 = Shutdown on closed
3 = Shutdown on open with remote temperature probe
4 = Shutdown on closed with remote temperature probe
Heat Pump
Compressor Lockout
0-45°F
(-18°C - 7°C)
0 If an outside sensor is used, the compressor will be locked out when the outside air temp is below the
value selected.
0 = None
15°F( -9°C); 20°F (-7°C); 25°F ( -4°C); 30°F ( -1°C); 35°F (2°C); 40°F (4°C); 45°F (7°C)
Heat Pump Auxiliary
Lockout
0- 60°F
(-18°C - 15°C)
0 If an outside sensor is used, the auxiliary heat will be locked out when the outside air temperature is
above the value selected.
0 = None
40°F (4°C); 45°F (7°C); 50°F (10°C); 55°F (13°C); 60°F (16°C)
Furnace Filter
Timer
0; 10; 30; 60; 90;
120; 365
0 Sets a Furnace Filter Timer reminder; appears on digital display when timer expires (if programmed).
0 = Off
10 days; 30 days; 60 days; 90 days; 120 days; 365 days
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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Enable UV Filter
Timer
0-1 0 Activates the UV Filter Timer. UV Filter timer measures the on-time for Fan output in service of heat,
cool, humidify, or dehumidify (Note: UV lamp life varies by manufacturer. PECO is not responsible for
lamp life nor for UV filter.)
0 = UV timer disabled
1 = UV timer enabled
UV Filter
Timer Hours
0-250 120
(hundreds of hours)
Reports UV Filter Timer in hundreds of hours. (Default: Number of hours remaining 120 = 12,000
hours). Service Indicator (wrench) is shown in Default Display when timer expires. When the UV Filter
Timer expires, in Home Display the clock area alternates between the time display and “F 01.”
Number of Program
Periods
2; 4 events 4 2 = 2 events per day
4 = 4 events per day
Clock format 12 or 24 Hours 12 12 = 12-hour clock mode
24 = 24-hour clock mode
Temperature Format
(°F or °C)
0,1 1 0 = Celsius
1 = Fahrenheit
Fan Off Delay Heat 0-99 Seconds 0 Select the amount of time (in seconds) that the fan will run after the thermostat heat outputs are turned
off.
Fan Off Delay Cool 0-99 Seconds 0 Select the amount of time (in seconds) that the fan will run after the thermostat cool outputs are turned
off.
Range Low 50-90 °F or
10-32°C
50°F (10°C) Choose the lowest selectable temperature setpoint value. Only available with Performance PRO
settings (see SM 100).
Range High 50-90 °F or
10-32°C
90°F (32°C) Choose the highest selectable temperature setpoint value. Only available with Performance PRO
settings (see SM 100).
Teacher Key Heat
Setpoint Increase
0-10 °F 3 °F Sets number of degrees that teacher can increase the temperature above the Occupied Heat Setpoint.
Teacher Key Heat
Setpoint Decrease
0-10 °F 3 °F Sets number of degrees that teacher can decrease the temperature below the Occupied Heat Setpoint.
Teacher Key Cool
Setpoint Increase
0-10 °F 3 °F Sets number of degrees that teacher can increase the temperature above the Occupied Cool Setpoint.
Teacher Key Cool
Setpoint Decrease
0-10 °F 3 °F Sets number of degrees that teacher can decrease the temperature below the Occupied Cool Setpoint.
Setback Low Off; 50-82°F or
11-27°C
55°F (13°C) Select the heat setpoint for setback mode. Only available with Performance PRO settings (see SM 100).
0 = Off
50-82°F (11-27°C)
Setback High Off; 58-90°F or
11-32°C
90°F (32°C) Select the cool setpoint for setback mode. Only available with Performance PRO standard settings
(see SM 100).
0 = Off
58-90°F (11-32°C)
Zone Temp Offset +/-9°F or +/-
4.5°C
0°F (18 °C) Adjusts the displayed value; may differ from actual zone temperature.
Keypad Lockout 0-3 0 Restricts access to certain features of device; Service Menu still available if enabled.
0 = No keypad lockout (Default)
1 = Disables Schedule and System keys
2 = Disables Schedule, System, and Fan keys
3 = Disables all keys
Enable Pin Access 0,1 0 Applies a 3 digit access code to enter Service Menu 342
0 = Disable
1 = Enable
Set PIN Access
Code
000-999 000 Choose a 3-digit code.
Fan Mode
Enable
1-3 3 1 = ON: Fan is turned on regardless of demand.
2 = Auto: Fan is turned on according to heating or cooling demand.
3 = ON or Auto: Allows occupant to select either 1 or 2 above.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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System Mode Enable 0-3 1 Allows ability to determine which system modes the occupant can select.
0 = OFF, Auto
1 = OFF, Heat, Cool, Auto
2 = OFF, Heat, Cool
3 = Heat, Cool, Auto
Economizer/Outside
Air Damper Control
0-4 0 0 = Off
1 = Time Based Output
2 = Economizer
3 = Continuous Outside Air Damper
4 = Cycled Outside Air Damper (Note: Cycles on demand if CO2 Sensor is applied and congured.)
Minimum Deadband
Adjustment
3-10°F,
1.5-5°C
3°F Select a changeover deadband value to prevent short cycling between heating and cooling modes.
The value is adjustable to meet various HVAC system requirements.
Restart Occupancy
Sensor Count when
not-enabled.
0-2 0 Providing an “occupied” input signal behaves the same as pressing the Teacher key. In the event that
the teacher button and the occupancy sensor are not in the same state, the Teacher key takes precedence.
0 = No occupancy sensor installed in system.
1 = Status changes to unoccupied after time set in occupied time setting runs out, regardless of
occupancy sensor input.
2 = Status remains as occupied as long as occupancy sensor indicates room is occupied.
Pre-Occupancy Purge 0-3 hours 0 hours Select to energize fan for selected number of hours (0-3) prior to all occupied events.
Adaptive
Pre-Conditioning
Schedule (APCS)
0-1 0 Enables adaptive pre-conditioning schedule (and requires input by user or occupancy sensor after enabled).
0 = Disabled
1 = Enabled; state learns pre-purge and recovery schedule.
Persistence
(for APCS)
1-4 2 Selects the number of weeks that an APCS event shall remain in the schedule.
1 = Event will be removed from the schedule the rst time that it does not recur.
Maximum Override
Time Limit
0=Time until
next event;
or
1-4 hours
3 Restricts the duration that a temporary hold can be set. The temporary hold is limited by the maximum
amount of time as dened in this Service Menu.
0 = Remainder of time until the next scheduled event.
1 = 1 Hour
2 = 2 Hours
3 = 3 Hours
4 = 4 Hours
School Schedule
Default Occupied
Duration When
Enabled
0; 0:15; 0:30;
1; 2; 3; 4; 6;
8; 99
99 (max.) Sets the default occupied duration,when Teacher key is pressed, during School Schedule “” period.
0 = Occupied duration not available to teacher. Occupied duration set to “Max occupied time when
enabled” setting.
99 = Occupied duration is available to teacher; defaults to “Max occupied duration when enabled” setting.
School Schedule
Default Occupied
Duration When
Disabled
0:15; 0:30; 1;
2; 3; 4; 6; 8
0:15 Sets the default occupied duration, when Teacher key is pressed, in School Schedule “Disabled” period.
School Schedule Max.
Occupied Duration
When Enabled
0:15; 0:30;
1; 2; 3; 4; 6;
8; 99
1Sets the maximum occupied duration that the user can enter during the “” schedule period.
99 = Thermostat can be set to remain occupied until the end of the Enabled period.
School Schedule Max.
Occupied Duration
When Disabled
0; 0:15; 0:30;
1; 2; 3; 4;
6; 8
0:15 Sets the maximum occupied duration that the user can enter during the “” schedule period
0 = Thermostat will not become occupied in Disabled schedule period.
Cycles Per Hour
(CPH) Cooling
Stage 1
0-6 CPH 3 CPH Denes the number of cycles per hour for cooling (Stage 1). Select 0 to enable ON-OFF control for Stage 1
cooling.
Cycles Per Hour
(CPH) Cooling
Stage 2
0-6 CPH 3 CPH Denes the number of cycles per hour for cooling (Stage 2). Select 0 to enable ON-OFF control for Stage 2
cooling.
Cycles Per Hour
(CPH) Heating
Stage 1
0-12 CPH 5 CPH Denes the number of cycles per hour for heating (Stage 1). Select 0 to enable ON-OFF control for Stage 1
heating.
Cycles Per Hour
(CPH) Heating
Stage 2
0-12 CPH 5 CPH Denes the number of cycles per hour for heating (Stage 2). Select 0 to enable ON-OFF control for Stage 2
heating.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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Cycles Per Hour
(CPH) Emergency
Heating &
Stage 3 Heat
0-12 CPH 5 CPH Denes the number of cycles per hour for heating. Select 0 to enable ON-OFF control for Emergency
Heating & Stage 3 Heat.
Heat Recovery Rate 0-18°F/Hr
0-10°C/Hr
5°F/Hr Denes the rate at which the device achieves the heat comfort setpoint. Select 0 to disable ramp recovery.
Cool Recovery Rate 0-18°F/Hr
0-10°C/Hr
5°F/Hr Denes the rate at which the device achieves the cool comfort setpoint. Select 0 to disable ramp recovery.
Minimum Off Time 1-10 minutes 4 minutes Sets the minimum off time for both the heat and cool output.
Random Start 0-2 0 0 = Random start disabled.
1 = Random start enabled, stat powered by batteries only.
2 = Random start enabled, stat powered by AC power, or AC power AND batteries.
Note: To use random start on AC power up, SM 482 must be set to 2 so that thermostat will detect AC
power. When SM 482 is set to 2, loss of AC power will cause thermostat to turn all equipment OFF until
power is restored and random start time has expired.
Maximum Start Time
Offset
3,5,10,15,30 5 Maximum start time offset. Start time offset will be randomized between 0 and this number of minutes.
Current Start Time
Offset
--- --- Displays the randomized start time offset value in minutes.
Evaporator Drain
Cycle
0-1 0 Disables the ventilation output until the drain cycle is complete. Note: Drain cycle lasts about 4 minutes.
0 = Evaporator drain cycle disabled.
1 = Evaporator drain cycle enabled.
Humidity Control
Enable
(Select models only)
0-3 0 Selects how humidity will be controlled. When dehumidify control is enabled, the Y2 terminal becomes
dehumidify. Note: If option 3 is selected, Service Menu 491 becomes available.
0 = Disabled
1 = Dehumidify Control
2 = Humidify Control
3 = Dehumidify and Humidify Control
Humidity Deadband 10-50 30% relative
humidity (RH)
Selects the deadband in %RH between the humidify and dehumidify setpoints. Note: If option 3 is selected
in Service Menu 490, Service Menu 491 becomes available.
10; 20; 30; 40; 50
Programmable/
Intermittent Fan
0-2 0 0 = Disable
1 = Programmable Fan: Fan operates continuously in occupied periods or with demand in
unoccupied periods.
2 = Intermittent Fan: Fan operates based on the on and off times set in menus 501 and 502.
Intermittent Fan On
Time
1-60 minutes 5 minutes Denes the on time for the Intermittent Fan.
Intermittent Fan Off
Time
0-60 minutes 25 minutes Denes the off time for the Intermittent Fan. Select 0 for continuous fan.
Power Harvesting
Enable
(For use on systems
in which a Common
“C” power wire is
unavailable)
0-3 0 Options 1-3 draw a small amount of current from load wire indicated to supplement battery supply.
0 = No power harvesting is available.
1 = Use Y1 as the battery supplement.
2 = Use W1 as the battery supplement.
3 = Use both Y1 and W1 as the battery supplement
Default Display Icons 0-4 0 Select icons that will be displayed in the Default Display screen.
0 = Time, Temp, SP
1 = Time, Temp
2 = Time
3 = Temp
4 = None
Revision — — Displays rmware revision information (for technician); not adjustable.
Factory Default Reset 0,1 0 Select 1 (enable) to restore factory default settings for thermostat. Select 0 to disable.
0 = Disable
1 = Enable
Note: Press “Done” key to complete process.
Clear APCS Schedule 0-1 0 0 = No effect
1 = Clears APCS schedule. Menu resets to 0 after Done key is pressed.
Power Harvesting is intended to be used only as a battery
supplement. If enabled, the feature preserves battery life.
If Power Harvesting is not compatible with your system, select “0”
(default) to disable. If thermostat is powered from AC, select only “0”
or off. Consult a technician if you have questions.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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System Test Main
Output (Cool)
0-2 0 Select an option to activate the fan output for 10 minutes; select 0, Done or a different Service Menu to
disable.
0 = Disable
1= Cool Stage 1
2 = Cool Stage 2
System Test Main
Output (Heat)
0-3 0 Select an option to activate the fan output for 10 minutes; select 0, Done or a different Service Menu to
disable. Note: Outputs will be activated based upon the system con guration.
0 = Disable (Default)
1 = Heat Stage 1
2 = Heat Stage 2
3 = Heat Stage 3
System Test Fan
Output
0,1 0 Select 0 or 1 to activate the fan output for 10 minutes; select 0, Done or a different Service Menu to disable.
0 = Disable Fan Output
1 = Enable Fan Output Note: Outputs will be activated based upon the system con guration.
System Test
Emergency Output
0,1 0 Select 0 or 1 to activate the Emergency output for 10 minutes; select 0, Done or a different Service Menu to disable.
0 = Disable Emergency Output
1 = Enable Emergency Output
System Test
Economizer
0,1 0 Select 1 to activate the Economizer output for 10 minutes; select 0, Done or a different Service Menu to disable.
0 = Disable Economizer Output
1 = Enable Economizer Output
Creating a PIN access code allows the installer to restrict access to Service Menus. First,
PIN access must be enabled in Service Menu 341; second, a three-digit code must be
created in Service Menu 342. After these two Service Menus are properly con gured, the
thermostat requires the user to enter a PIN access code to enter the Service Menus.
1. On the thermostat, press the lower left and lower right keys simultaneously for about
ve seconds. Next, Go Back, and Done appear (see Fig. 15).
2. Press Next until Service Menu 341 (Enable/Disable PIN Access) appears in the
display. (Default value “00” appears below Service Menu.)
3. In Service Menu 341, press ▲/ ▼to change digit ( ashing) value to “01” (see Fig. 16).
4. Press Next.
5. In Service Menu 342, press ▲/ ▼adjust values and create a three-digit PIN access
code. The ashing three-digit code appears in the clock area (see Fig. 16).
6. Press Done when nished.
Enter the PIN access code upon entering the Service Menus. : Flashing digit is active.
Change digit using the ▲/ ▼keys. The active (editable) digit moves from right to left.
1. On the thermostat, press the lower left and lower right keys simultaneously for about
ve seconds. Flashing three-digit code, Next, and Done appear (see Fig. 17).
2. Press ▲/ ▼to change value of digit furthest to the right, then press Next.
3. Press ▲/ ▼to change value of digit in middle, then press Next.
4. Press ▲/ ▼to change value of digit furthest to left, then press Done.
: After step 4 is complete, user is allowed access to Service Menus. Next,
Go Back, Done, and Service Menu 100 appear.
Figure 15.
Service Menu
341 allows
user to restrict
access to
Service
Menus.
user to restrict
Figure 16.
Service Menu
342 allows
user to create
a PIN access
code.
Figure 17.
PIN access
code fl ashes
when user
enters Service
Menus (after
enabling PIN
access).
Flashing
three-digit
code
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
10
The T4900 School Series is also compatible with PECO sensors, which provides optimal
control of the environment and low maintenance. Following are sensor wiring diagrams for
temperature averaging and installation instructions for the Indoor Remote Zone Sensor
and Outdoor Remote Sensor. (Note: Terminal designations for sensors shown in Table 4.)
Indoor Remote Sensor SP155 S1 ■
Outdoor Remote Sensor P/N 70327 S1/ S3 ■
Occupancy Sensor SB200 S2 ■
CO2 Sensor SC500 S3 ■
To learn more about the benets of PECO sensors visit .
Or call 1-800-874-8547 to speak with a service representative.
000 - 150 feet (0-46 m) 22 gauge
151 - 240 feet (46-73 m) 20 gauge
241- 385 feet (73-117 m) 18 gauge
386 - 610 feet (118-186 m) 16 gauge
611 -970 feet (186-296 m) 14 gauge
Use appropriate wire for outdoor use.
Please use the installation instructions for the SB200-001 to mount the PECO Occupancy
Sensor SB200-001.
The T4900 can be congured for demand-controlled ventilation by using a PECO SC500
CO2 Sensor (see Service Menu 170). For installation of the CO2 Sensor, please see the
PECO SC500 CO2 Sensor Installation Instructions.
System shutdown provides the ability to shutdown all outputs via S1 Terminal
(if enabled), and it may be used with or without application of a remote temperature probe.
A dry contact switch can be connected to S1 input on the T4900 terminal block. When
detected in an active state, all HVAC outputs are turned “OFF” (same as system off),
and the Service Indicator (wrench) icon is displayed on the LCD. This feature is used for
condensate overow, door/window switch, or service mode detection. : All diagrams
show the dry contact switch in the non-active state.
Use Service Menu 172 to congure the input. Select from Options 0-4 in Service Menu
172 (“0” is default). Options 0-4 in the following table correspond to the wiring diagram
numbers (e.g., Option 1) below.
Menu Feature Options Default Description
172 System
Shutdown
(for S1
Terminal)
0-4 0 0 = Probe, no switch (Default)
1 = Shutdown on open
2 = Shutdown on closed
3 = Shutdown on open with
remote temperature probe
4 = Shutdown on closed with
remote temperature probe
Option 1
Option 2
Option 4
Option 3
Figure 18.
Wiring four SP 155-017
(10K ohm) temperature sensors.
Figure 19.
Wiring nine SP 155-017
(10K ohm) temperature sensors.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
11
1. Choose a location on an interior wall near the air return grille,
about ve feet (1.5 m) above oor level, where air circulation is good and temperature
is average for the zone.
mounting the Indoor Remote Sensor in areas such as:
• Behind doors
• On outside walls, or any walls with unheated or uncooled areas behind the sensor
• In direct sunlight, or near any source of radiant heat that could affect the
temperature measurements
• In line with the discharge air from the unit being controlled.
Remove Sensor cover from the subbase, and mount subbase on
the wall or in a 2” X 4” device box. Route the wires through the wire access hole in the
subbase (see Fig. 22). Seal the hole in the wall behind the subbase.
1. Run wires between the unit control panel and the Sensor subbase.
2. Connect the wiring to the terminals at the thermostat wallplate (S1 and
SC) See Fig. 23, below.
Note: See Table 1 for terminal designations for the Indoor Remote Sensor.
3. Place Sensor cover back on the subbase, and snap it securely into
place.
4. Select option “01” to enable the Indoor Sensor (see Fig.24).
▲
: Keep wires separate and routed away from any source of
noise such as motors, uorescent lights, and other wiring.
Figure 24.
Service Menu
170 allows the
user to enable
the Indoor
Remote Zone
Sensor.
Figure 22.
Mounting the
SP155-017
Indoor Remote
Zone Sensor.
Device box mounting
Wall mounting
Terminal S1
Terminal SC
Figure 23.
Wiring terminal
designations for
SP155-017
Indoor Remote
Zone Sensor.
• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO INSTALL,
OPERATE, OR SERVICE THIS SENSOR.
• Failure to observe safety information and comply with instructions could result in
PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE.
• To avoid electrical shock or damage to equipment, disconnect power before
installing and use only wiring with insulation rated for full sensor operating voltage.
• This product, when installed, will be part of an engineered system whose
speci cations and performance characteristics are not designed or controlled
by PECO. Review applications and national and local codes to assure that the
installation will be functional and safe.
• Do not run low-voltage control wiring in the same conduit with high-voltage wiring.
• Use in indoor applications only.
▲
Figure 20.
SP 155-017
Indoor
Remote Zone
Sensor,
front and side
view.
Figure 21.
SP155-017
Indoor Remote
Zone Sensor,
back view with
mounting holes.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
12
If the Indoor Remote Sensor is functioning properly, the primary display (center) shows
the correct temperature taken at the location where Indoor Remote Sensor is currently
installed (see Fig. 25).
If the thermostat Home Display appears as follows (see Fig. 26), then the Indoor Remote
Sensor is not connected properly. Two dashes and the Service Indicator (wrench) appear
as the error message.
If the Indoor Remote Sensor is not connected properly, check the following:
• Make sure sensor is wired properly and connected to terminals S1 and SC
on the thermostat wallplate (see Table 1, Terminal Designations & System Types).
• If using multiple sensors, make sure wiring follows diagrams in Sensor Wiring for
Temperature Averaging.
• Make sure to select “01” in Service Menu 170.
Following are instructions on the PECO Outdoor Remote Sensor.
Mount the sensor where:
• It can measure true outdoor ambient temperature
• There is good air and circulation
• Surface is at
• Wire distance between the sensors cannot be tampered with
Do mount the sensor in any of the following:
• In direct sunlight
• Where hot or cold air blows on the sensor.
• Where discharge line from an outdoor compressor unit, vent, or fan causes
inaccurate temperature readings
• Where snow, ice, or debris can cover it
Use the following steps to mount the Outdoor Remote Sensor.
▲
Figure 25.
Thermostat
Display
shows
temperature
from Zone
Sensor
if working
properly.
Figure 26.
Thermostat
Display
shows Zone
Sensor error
message if
Sensor is
not working
properly.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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1. Wire the PECO Outdoor Remote Sensor to Terminal S1 and Sensor Common (SC) on
the thermostat wallplate (see Fig. 27).
: See Table 1 for terminal designations for the Outdoor Remote Sensor.
2. Assure that Step 6 (previous section) is complete and the PECO Outdoor Remote
Sensor is secure.
3. Plug the wiring passage using non-hardening caulk or putty.
4. Go to Service Menu 170, select from options 2-5, Outdoor Remote Sensor (see Fig.28).
Allow the outdoor or indoor temperature sensor to absorb the air for a minimum of ve
minutes before taking a reading. See Service Menu 370, which controls Economizer/
Outside air damper behavior. Table 6 shows the Economizer/TOD behaviors of available
settings (Options include 0-4; 0 = OFF, which disables the Economizer function).
Occupied N/A ON Continuously ON Continuously
Unoccupied YES OFF ON (Cycles with demand)
NO OFF OFF
Override NA ON Continuously ON Continuously
Heating Heat ON Continuously ON (Cycles with demand)
Cooling Cool ON Continuously ON (Cycles with demand)
None OFF OFF OFF
Heating or
Cooling
Auto ON Continuously ON (Cycles with demand)
The options available in Service Menu 140 (below) are dependent on the selected System
Type, Service Menu 110.
In this operation, there is no external fossil fuel kit (dual fuel kit) installed; the thermostat
controls this function:
1. Choose the correct heat pump application in Service Menu 110, System Type.
2. Choose Outdoor Temperature Sensor (Options 3 or 5) for Control Option in Service
Menu 170, Remote Sensor.
3. Go to Service Menu 140, Auxiliary Heat, and choose “1.”
4. Choose an appropriate temperature balance point in Service Menu 180, Heat Pump
Compressor Lockout.
Operation in Heat Mode Above Balance Point (Outdoor Temperature)
When the outdoor temperature is above the selected balance point temperature (Service
Menu 180), only the compressor operates and the fan (G Terminal) energizes when the
thermostat calls for heat.
Operation in Heat Mode Below Balance Point (Outdoor Temperature)
When the outdoor temperature is below the selected balance point temperature (Service
Menu 180), only the Fossil Fuel (auxiliary heat) operates and the fan (G Terminal) does not
energize when the thermostat calls for heat.
If Service Menu 140 is set to “1” (fossil fuel Auxiliary Heat), the lockout control is as
follows:
Outside Air
Temperature
40° F
Only Compressor Operates
Compressor
Lockout
Temperature
Only Auxiliary Heat Operates
1. Choose the correct heat pump application in Service Menu 110, System Type.
2. In Service Menu 170, Remote Sensor, Choose Outdoor Temperature Sensor (Options
3/5) for Control Option.
3. Go to Service Menu 140, Auxiliary Heat, and choose “0.”
4. Choose appropriate balance point in the Service Menu 180, Heat Pump Compressor
Lockout.
5. Choose Auxiliary Lockout Temperature in Service Menu 190, Heat Pump Auxiliary
Lockout.
Operation
When the outdoor temperature is:
• Below the Heat Pump Compressor Lockout Temperature, only the Auxiliary Heat
operates.
• Above the Heat Pump Auxiliary Lockout Temperature, only the Compressor
operates.
• Between the two temperatures, both the Compressor and Auxiliary Heat operate.
If Service Menu 140 is set to “0” (electric Auxiliary Heat) the lockout control is as follows:
Outside Air
Temperature
40° F
Only Compressor Operates
Auxiliary Lockout
Temperature
Both Compressor & Auxiliary Heat
Operate
Compressor Lockout
Temperature
20° F Only Auxiliary Heat Operates
Figure 27.
Wire PECO Remote
Outdoor Sensor to
Performance PRO
wallplate, Terminal S1, SC.
Terminal SC
Terminal S1
wiring passage
Figure 28.
Service
Menu 170
allows the
user to
enable the
Outdoor
Remote
Sensor.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
14
School Schedule offers one-touch comfort conditioning, making it ideal for educational
environments. Smart features like Adaptive Pre-Conditioning Schedule (APCS) simplify
HVAC management because APCS adapts to variable occupancy patterns. APCS and
School Schedule require input from Teacher/Override key or an Occupancy Sensor.
School Schedule has two scheduled events: Enabled and Disabled (see Table 7 below).
The installer may choose the following School Schedule example. The installer may set
default occupancy duration limits. The installer may select custom Heat/Cool Setpoints
to be applied during the status periods: Occupied1, Unocc1; Occupied2, Unocc2. In
routine operation, activation of School Schedule requires the user to press the Teacher /
Override key or the connection and con guration of an occupancy sensor.
The following table shows an example of a School Schedule. School Schedule has two
events, Enabled and Disabled, each with occupied and unoccupied settings.
Occupied1 Unocc1
Start Time:
6:00 AM
Heat Setpoint: 68°F (20°C)
Cool Setpoint: 76°F (24°C)
Occupied Duration: 4 HRS
(See SM 396)
Heat Setpoint: 62°F (17°C)
Cool Setpoint: 83°F (28°C)
Occupied2 Unocc2
Start Time:
4:00 PM
Heat Setpoint: 64°F (18°C)
Cool Setpoint: 81°F (27°C)
Occupied Duration: 15 Min.
(See SM 397)
Heat Setpoint: 58°F (14°C)
Cool Setpoint: 85°F (29°C)
1. Press and hold down simultaneously More and Teacher/Override (lower left and
lower right keys). : Service Menu 100 appears; “01” ashes below.
: At any time, user may select Go Back to abort or Done to save settings.
2. Press ▲/ ▼to highlight option “04,” selecting “School Schedule” format (see Fig. 29).
3. Press Done.
Next, select settings for a Heat Setpoint and Cool Setpoint for Occupied1 and Unocc1
status periods to be applied in School Schedule Enabled.
1. Press More to view more options.
2. Press Schedule to select the days to which settings will be applied.
3. Press ▲/ ▼to highlight day. : Selected day ashes
(Note: Select View to modify an existing event).
4. Press Edit to apply scheduled events for the selected day(s).
5. Press Select Day. : To select day press Select Day on ashing day. (Continue
pressing Select Day for multiple days; automatically advances to the next day.)
6. Press ▲/ ▼to highlight the day(s) to be programmed. : Selected day(s) for
scheduled events must be underlined.
7. Press Next. Occupied1 and Unocc1 appear ashing, with the start time shown.
8. At the ashing Occupied1 and Unocc1, select Next (see Fig.30).
9. At the ashing clock, press ▲/ ▼to select a start time for School Schedule Enabled.
Note: Start time is adjustable by a quarter hour.
10. Press Next. : Heat Setpoint appears ( ashing) in upper right (see Fig. 30).
11. Press ▲/ ▼to select desired Heat Setpoint for School Schedule Enabled Occupied1.
12. Press Next. Cool Setpoint appears.
13. Press ▲/ ▼to select a Cool Setpoint.
14. Press Next.
15. Now select a Heat Setpoint and Cool Setpoint for School Schedule Enabled Unocc1.
Repeat steps 12-15 for the Unocc1 settings of Schedule School Enabled.
16. Press Next after completing Heat/Cool Setpoints for School Schedule Enable.
17. Select Next At the ashing block of Occupied2 and Unocc2.
18. At the ashing clock, press ▲/ ▼to select a start time for School Schedule Disabled,
Occupied2. Start time adjustable by a quarter hour.
19. Press Next. Heat Setpoint appears (temperature ashing).
20. Press ▲/ ▼to select Heat Setpoint to be applied at the start of the School Schedule
Disabled Occupied2 (see Fig. 31).
21. Press Next. Cool Setpoint appears.
22. Press ▲/ ▼to select Cool Setpoint for Schedule Disabled Occupied2.
23. Press Next. Heat Setpoint for Unocc2 appears.
24. Now select a Heat Setpoint and Cool Setpoint for School Schedule Disabled Unocc2.
Repeat steps 20-22 for the Unocc2 settings of Schedule School Disabled.
25. Press Done to save all settings.
The installer may adjust the default duration of the occupied and unoccupied status within
Enabled and Disabled events, and adjust the maximum occupied time for which settings
can be applied (see Table 2). If you wish to program these settings, continue as follows:
• To program the default occupied period in which School Schedule Enabled settings apply
when the Teacher/Override key is pressed, see SM396, Default Occupied Duration When
Enabled.
• To program the default occupied period in which School Schedule Disabled settings
apply when the Teacher/Override key is pressed, see SM397, Default Occupied Duration
When Disabled.
• To program the maximum occupied duration that the user can enter during Enabled
event, see SM 398, Max. Occupied Duration When Enabled.
• To program the maximum occupied duration that the user can enter during Disabled
event, see SM 399, Max. Occupied Duration When Disabled.
• To program the number of degrees that the Heat Setpoint and Cool Setpoint may be
increased and decreased, upon pushing Teacher/Override, see SM 303-SM 305.
Figure 29.
Selecting
“04” in
Service
Menu 100
enables
School
Schedule.
Figure 30.
In School
Schedule
Enable,
Occupied1
fl ashes and
Heat
Setpoint
appears.
Figure 31.
Select Heat
Setpoint for
Occupied2
in School
Schedule
“Disabled.”
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
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Adaptive Pre-Conditioning Schedule (APCS) is intended to pre-condition a room for
occupancy based on weekly routines. An optional feature of School Shedule, APCS helps
educational facilities meet clean air quality standards. The installer must select the number
of weeks an occupancy event remains in memory (SM 392), the number of hours prior to
occupancy to apply pre-purge (SM 390), and the heat/cool recovery rate (SM 460/470).
APCS is only initiated by occupancy. A user must press the Teacher key or an Occupancy
Sensor must be applied. Thereafter, APCS applies pre-purge and heat/cool recovery
settings before the weekly occupancy event. APCS continues to adjust to a user’s weekly
routine based upon whether occupancy is initiated within a consistent timeframe. APCS
learns occupancy routines quickly and forgets them slowly.
1. Press, hold down simultaneously More and Teacher /Override (lower left and
lower right) keys to enter Service Menus. Service Menu 100 appears.
2. Press Next to go to Service Menu 391.
3. Press ▲/ ▼to select “01” to enable.
4. Press Done when nished.
5. Now assign the that an APCS event will remain in the schedule.
Advance to Service Menu 392. Default option is two (2) weeks. Note: APCS utilizes the
number of weeks that the start time of an occupancy event remains in the schedule.
6. Select (0-4) the number of weeks that the start time of an occupancy event remains in
the schedule (see Fig.33).
7. Optional: To clear the APCS schedule, advance to Service Menu 541 (see Fig. 34).
8. Press ▲/ ▼and select “01,” then press Done. Menu resets to “0” after the Done
key is pressed.
: In order for APCS to function properly, assure that:
• Occupancy Sensor is enabled —if used for application (see SM 388)
• School Schedule format is applied to thermostat (see SM 100)
• Pre-Occupancy Purge sets number of hours prior to occupied events (see SM 390)
Keypad lockout blocks access to certain features of the thermostat but allows access to
the Service Menus. After keypad lockout is enabled, the padlock icon will appear. Three
levels of Keypad Lockout are available (see SM 340). : If option 3 is selected, all
keys will be disabled except for the key combination used to enter into Service Menus
(for restricting access to the Service Menus, see SM 341, PIN Access). In the following
example, the installer will enable Keypad Lockout, Option 3, which disables all key
functions, except for access to the Service Menus.
1. Press, hold down simultaneously More and Teacher /Override (lower left and
lower right) keys to enter Service Menus. Service Menu 100 appears.
2. Press Next to go to Service Menu 340.
3. In Service Menu 340, select Option “03,” which disables all keys (see Fig.35).
4. Press Done. : After the above steps are complete, the Default Display is shown,
in addition to a padlock icon at bottom (see Fig. 36).
5. To reset Keypad Lockout to default setting (0, No Keypad Lockout), press and hold
down simultaneously More and Teacher /Override (lower left and lower right)
keys to enter Service Menus. Service Menu 100 appears.
6. Press Next to go to Service Menu 340 (see Fig. 37).
7. In Service Menu 340, select Option “00,” which enables “No Keypad Lockout.”
Figure 32.
Enable
APCS in
Service
Menu 391.
Figure 35.
Select
Option “03”
in Service
Menu 340
to disable all
keys.
Figure 36.
Default
Display after
Keypad
Lockout is
applied.
Figure 33.
Assign the
number
of weeks
that an
APCS event
remains in
schedule.
Figure 37.
In Service
Menu 340
Select
Option
“00” for No
Keypad
Lockout .
Figure 34.
Clear the
memory for
APCS.
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED. P/N 70568 3220-2287 REV 00
16
In case of difculty, try one of the following suggestions below.
If display screen is blank • Thermostat is not being powered • Check to assure connection between Common (C) and (RC) for 24 VAC.
• Check to assure that the metal jumper connects “RC” and “RH” (on
single transformer system only).
• Check to assure AA batteries are installed properly and are charged.
• Default Display is set to “4” (None) • Check Service Menu 520.
If display screen is blank AND system is running AC
power only
• Power harvesting is enabled without battery
support
• Install batteries and select “0” (disabled) in Service Menu 510 (to disable
Power Harvesting).
If keys do not allow manual entry • Keypad Lockout may be enabled • Access Service Menu 340. Within this menu, select option “0” to assure
there is no keypad lockout (so manual entry is enabled).
If Service Indicator (wrench) is on • Remote temperature sensors may not be
installed correctly or may be damaged.
• Check to assure that remote temperature sensor is connected properly.
Ensure that the system uses PECO-approved sensor(s).
Setpoint limits do not change • Heat or cool setpoint limit has been reached • Check range limits and deadband (see Service Menus 290, 300, 380).
• Keypad is locked • See item above
If no heating or cooling is running, but there is a call
for heat or cool (Heat/Cool appears on display) in
Auto mode
• Heating or cooling equipment is not operating • Check Service Menu 110 to assure that the correct option is selected to
match the system type.
• Check wiring, using output tests to verify (see Service Menus 600, 610,
620, 630, 640).
If heating and cooling system doesn’t respond • System type selection is incorrect • Check Service Menu 110 to assure that the correct option is selected to
match the system type.
If heating and cooling equipment are running at the
same time
• System type selection is incorrect • Check Service Menu 110 to assure that the correct option to match the
system type is selected.
• Heating and cooling wires are shorted together • Separate the heating and cooling wires, using output tests to verify (see
Service Menus 600, 610, 620, 630, 640).
Heat does not turn on (Heat is on continuously on
display)
• Heating equipment failure
• Loose or broken wire connection between
heating equipment and thermostat
• Check for 24 VAC at the equipment on the secondary side of the
transformer between the Power for Heating (RH) and the Common (C).
• Check to assure 24 VAC connection between heat terminal (W1) and
transformer Common (C). If 24 VAC is present, thermostat is functional.
Check heating equipment to nd cause of failure. If voltage is not
present, check wire connection between the heating equipment and the
thermostat.
If Demand Indicator light is red • Heating is occurring • No action is required.
If Demand Indicator light is green • Cooling is occurring • No action is required.
If Demand Indicator light is ashing • An error has occurred
• Remote sensor may be malfunctioning
• Check remote sensor wiring.
• Verify that the sensor(s) are PECO supported products.
If heat pump issues cool air in heat mode or warm air
in cool mode
• Changeover valve (B/O terminal) is not
congured to match the heat pump
• Check Service Menu 130 to assure that the changeover valve (B/O
terminal) is set to properly match the heat pump.
Cooling does not turn on (Cool is on display) in Auto
mode
• Cooling equipment failure
• Loose or broken wire between cooling
equipment and thermostat
• Check for 24 VAC at the equipment on the secondary side of the
transformer between the Power for Cooling (RC) and the Common (C).
• Check to assure 24 VAC connection between the cool terminal (Y1) and
transformer Common (C). If 24 VAC is present, thermostat is functional.
Check cooling equipment to nd cause of failure. If voltage is not
present, check the wire connection between the cooling equipment and
the thermostat.
If fan does not turn on when there is a demand for
heat
• System type may be incorrect • See Service Menu 110 and assure that the correct option is selected.
• Fan control may be incorrect • See Service Menu 120 and assure that the correct option is selected.
If heating system is running in the cool mode • System type selection is incorrect • Check Service Menu 110 to assure that the correct option is selected to
match the system type.
If heating equipment does not turn off and heat
temperature setting is set below room temperature
• Heating equipment is not a heat pump but
system type selected is heat pump
• Check Service Menu 110 to assure that the correct option is selected to
match the system type.
If the user cannot select the system setting for cool • System type is set to Heat only or Heat only
with fan
• Check Service Menu 110 to assure that the correct option is selected to
match the system type.
If the user cannot select the system setting for heat • System type is set to Cool only. • Check Service Menu 110 to assure that the correct option is selected to
match the system type.
Performance PRO and School Series are trademarks and PECO is a registered trademark of PECO, Inc. The PECO logo is a trademark or servicemark of PECO, Inc.
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