Pecoware TC170 User Manual
WARNING
CAUTION
2x4 Mud Ring
T170 Base
T170 Cover Assembly
All wiring connections must be made
inside the electric box or the T170
maybe damaged.
Cover Locking Snaps
(Both Sides)
!
▲
READ THESE INSTRUCTIONS CAREFULLY BEFORE
•
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS
THERMOSTAT.
Failure to observe safety information and comply with instruc-
•
tions 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.
Before installing this control, the Voltage Selection Switch must
•
be placed in the correct position. See instructions.
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
specications and performance characteristics are not designed
or controlled by PECO. You must review your application and
national and local codes to assure that your installation will be
functional and safe.
CAUTION
Use copper wire only, insulate or wire nut all unused leads.
•
Care should be used to avoid electrostatic discharge to the T170
•
thermostat.
This unit has conguration jumpers. You may need to recongure
•
this thermostat for your application. See page 3.
MOUNTING THE THERMOSTAT
Thermostat mounts to a 4x4 box with a 2x4 mud ring.
TC170 THERMOSTAT
INSTALLATION
1. This thermostat is a 24 VAC only control. Leave the Voltage Selection Switch in the 24 VAC position for proper operation. Failure to
select the correct voltage will result in thermostat malfunction or permanent thermostat damage.
2. Connect wires using the wiring diagram. Wire nut off all unused wires.
All connections must be located in the outlet box.
3. Install the T170 base with the two furnished mounting screws to
a standard 4 x 4 x 2-1/8” square device box with a 2” x 4” mud ring
mounted horizontally. Tighten the screws evenly but do not over tighten.
4. To use a remote sensor on units with local sensing capability, remove
jumper JP-1 to disable local sensing. Failure to remove JP-1 will cause
improper operation of the thermostat with a remote probe installed.
5. Verify that the circuit board is rmly snapped into the cover and has
not been dislodged during handling.
6. Install the cover assembly. Press rmly to engage the cover locking
snaps.
7. Checkout: After wiring and installation is complete, energize the
system. Set fan to ON. Set the system button to AUTO, or available
selection. Using the UP arrow, adjust temperature above the ambient
temperature to cycle heating stage(s) on. Using the DOWN arrow adjust
the temperature below ambient temperature to cycle cooling stage(s)
on.
TYPICAL OPERATION
System Button Operation
OFF All thermostat outputs are off.
AUTO The thermostat automatically selects heating or cooling mode
depending upon the set point and room temperature. The ap-
propriate HEAT or COOL icon are illuminated if demand exists.
A 3°F dead-band is provided to prevent short cycling between
heating and cooling modes. After changeover, the control point
automatically shifts so that the control off point equals the set
point temperature.
COOL The thermostat operates as a cooling only thermostat.
HEAT The thermostat operates as a heating only thermostat.
Up/Down Arrow Button Operation
Up/Down arrows increased or decreased temperature.
Fan Button Operation
In ON the fan output is continuous. In AUTO the output cycles with
demand. Some models are available with Controlled Off and or Staged
Fan.
F/C Button Operation
This button toggles from Fahrenheit to Celsius.
Speed Button Operation
Some models have a Speed button instead of a F/C button. Fan speed
is determined by manual selection of HI or LO. Holding this button in
for 5 seconds will toggle the displayed temperature from Fahrenheit to
Celsius.
© COPYRIGHT 2008 PECO, INC. ALL RIGHTS RESERVED. P/N 69289 3220-2083 REV 0 PAGE 1
HVAC SETBACK SYSTEMS
White/Yellow
White/Violet
Remote Probe
Circuit Common
Normally
Closed
Condensate
Switch
Remote Probe Installation
White/Yellow
White/Violet
Remote Probe
Circuit Common
Normally
Open
Condensate
Switch
Local Sensor Installation
Temperature Demand
SETPOINT
IF 2F
3F
4F
FAN 1 ON
FAN 2 ON
(FAN 1 OFF)
FAN AUTO:
Fan cycles on with demand
FAN ON:
Fan runs continuously
Occupancy Detection
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Setback Operation
•
Door Switch Only Operation
•
Occupancy Detection
Install jumper JP3.
The T170 can be used with the PECO S200 series occupancy detection
equipment. The occupancy and door switch inputs are designed to con-
nect to the SB200 slave sensor and SE200 door switch. The Occupancy
sensor switch is open when there is occupancy and closed when
unoccupied. The Door Switch is open when the door is open and closed
when the door is closed. This system requires both an Occupancy Sensor and a Door Switch. Operation is as follows:
FROM OCCUPIED MODE:
1. A door close signal initiates an occupancy status
detection.
2. If occupancy is detected the T170 will maintain normal HVAC
control. It then waits for a door open signal before determining
occupancy again.
3. If no occupancy signal is detected within 2 minutes the T170
changes to unoccupied mode and controls at setback values.
FROM UNOCCUPIED MODE:
1. The T170 continually monitors the room.
2. Any occupancy detection, including door open, will set the
operation to occupied mode.
In either mode, if the door is left open for more that 2 minutes the T170
will disable the HVAC system. A one-time ten minute override can be
initiated by pressing any thermostat key pad.
In an Occupied State the thermostat operates normally and looks for a
door close. In the Unoccupied State the thermostat sets heating and
cooling set points to setback values, as determined by factory or user
settings. In this mode the fan is automatically set to cycle with demand.
The T170 will continue to monitor the occupancy sensor and will go to
occupied state anytime occupancy is detected.
CONDENSATE OVERFLOW INTERRUPT
The remote probe input can be used with a condensate overow switch
(CO), either in conjunction with a remote probe (normally closed CO
switch) or with local sensing (normally open CO switch). When con-
densate switch activates, the T170 will display the service wrench and
disable all outputs.
FAN OPERATION
Your thermostat can be congured for up to two fan speeds. Fan staging
follows the Heat and Cool Staging Separation. Heat and Cool staging
can be user selected to different values.
The FAN button is used to select FAN AUTO or ON. In the Auto position
the fan cycles on with demand for heating or cooling. If ON is selected
the fan will run continuously.
Setback Operation
Remove jumper JP3.
This is a low level switch input that is normally open. When closed
the T170 Heating and Cooling setback limits are used as temperature
control points. Fan operation in setback is cycled with demand. Pressing
any button will override setback for 1 hour. Setback will override any
user setting except if the control is turned to OFF. Units with a controlled
off factory setting will override the OFF setting.
Intelligent occupancy sensors like the SD200-001 and SD200-002 can
be used with this input to set the HVAC system to control at setback
limits.
Door Switch Only Operation
Install jumper JP3.
A stand alone door switch can be connected to the T170 to disable the
HVAC system if the door is left open for more that 2 minutes. A one-time
ten minute override can be initiated by pressing any thermostat key pad.
© COPYRIGHT 2008 PECO, INC. ALL RIGHTS RESERVED. P/N 69289 3220-2083 REV 0 PAGE 2
CONTROLLED OFF
FACTORY CONFIGURATION
A factory conguration may be provided to ensure minimum heat and
cool requirements. With this conguration the heat and cool outputs are
automatically cycled on at the heat and cool setback limits. Your thermostat may not have this feature.
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