Peco TB167 Application Manual

hREAD THESE INSTRUCTIONS CAREFULLY BEFORE 
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS 
THERMOSTAT. 
hFailure to observe safety information and comply with instructions 
could result in PERSONAL INJURY, DEATH AND/OR 
PROPERTY DAMAGE.
hTo avoid electrical shock or damage to equipment, disconnect 
power before installing or servicing.
hTo avoid potential fire and/ or explosion do not use in potentially 
flammable or explosive atmospheres.
hRetain these instructions for future reference.  This product, when 
installed, will be part of an engineered system whose 
specifications and performance characteristics are not designed 
or controlled by PECO, Inc.  You must review your application and 
national and local codes to assure that your installation will be 
functional and safe.
WARNING
CAUTION
1 Use Copper wire only, insulate or wire nut all un-used leads.
© COPYRIGHT PECO, INC. ALL RIGHTS RESERVED                                                                                        P/N 68817 3220-1465   Rev 0    Page 1
THERMOSTAT OPERATION
The T167 has a proportional band width of 2°F.
Temperature Control Range: 50 - 90 F
TA167: A HEAT-OFF-COOL system switch manually selects heating or 
cooling mode.  In the HEAT position only the heat output cycles with 
demand.  In the COOL position only the cool output cycles with demand. In 
the OFF position heating and cooling output are off. 
A ON-OFF system switch allow direct cycling between heat output and the 
cool output and should be used for either heat only or cool only 
applications. A changeover switch should be used if both outputs are used 
on TA167 models with ON-OFF switches. 
TB167:  A ON-OFF system switch enables auto-changeover of heating 
and cooling mode. In the ON position thermostat activates heating or 
cooling output dependant upon the relationship between the set point and 
the ambient temperature.  Heat OFF to cool ON (or Cool OFF to Heat ON) 
changeover is 3°F. After a changeover excursion has occurred the 
thermostat will resume controlling at the set point.  In the OFF position 
heating and cooling outputs are off.
FAN: Fan Operation is switched on or off with the system switch. Manual 
selection of up to three fan speeds are available on models with Fan 
Switches.  Fan circuitry is electrically separate from thermostatic circuitry. 
1. Install the T167 with the two furnished mounting screws to a 
standard 2" x 4" electrical box, 4-11/16" x 2-1/8" square device 
box with a 2" x 4" adapter ring or to a 4" x 4" box with accessory 
adapter plate.
2. For wall installations, mount the thermostat on an inside 
wall approximately 5 feet above the floor.  The location should 
provide circulation at average room temperature.  Avoid direct 
sunlight or sources of hot or cold air in the room or wall.
3. Remove the knob and then the cover.  Mount thermostat 
base assembly to the outlet box using the screws provided, 
tighten the screws evenly but do not over tighten.  Connect 
wires as noted. 
4. The cover may limit system switch movement.  Switch 
position should not be changed after the cover is removed to 
assure that the cover can be reinstalled.
5. To use a remote sensor on units that have local sensing 
capability, remove jumper JP-1 to disable local sensing.  
Failure to remove JP-1 will cause improper operation of the 
thermostat.
6. Reinstall the cover assembly.  Install cover locking screw 
provided. Reinstall the knob.
7. Checkout:
After wiring and installation are complete, energize the system 
and check the operation.  Adjust the thermostat as necessary 
to complete at least one cycle.  Be sure the thermostat and all 
other equipment are functioning correctly.
JP1
4
1
2
1
2
3
1
2
3
4
TB1
TB2
TB3
REMOVE JP1 
WHEN USING A 
REMOTE SENSOR
TERMINAL BLOCK
TB2
INSTALL COVER 
LOCKING SCREW
TERMINAL BLOCK
TB3
TERMINAL BLOCK
TB1
LINE or LOW VOLTAGE
CONNECTIONS
LOW VOLTAGE
CONNECTIONS
TB 2
TB 1
TB 3
HEAT
0 - 10 VDC
COOL
0 - 10 VDC
VOLTAGE
RATING
FAN AND SYSTEM SWITCHES
INDUCTIVE
FLA
LRA
RESISTIVE
AMPS
PILOT
DUTY
THERMOSTATIC
OUTPUTS
24 VAC
NA NA NA 24 VA
0 - 10 VDC
120 VAC
5.8 34.8 6.0 125 VA
NA
240 VAC
2.9 17.4 5.0 125 VA
NA
277 VAC
2.4 14.4 4.2 125 VA
NA
LO
MED
HI
L1
FAN
L2 OR
FAN NEUTRAL
24 VAC 1
24 VAC 2
REMOTE PROBE 2
REMOTE PROBE 1
24 VAC
XFMR
1
2
3
5
1
2
3
4
1
2
0-10 VDC THERMOSTAT
 TA167 / TB167
 5
4
NO CONNECTION

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