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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.
FAN AND SYSTEM SWITCHES
VOLTAGE
INDUCTIVE
RESISTIVE
RATING
FLA
LRA
24 VAC
NA
NA
120 VAC
5.8
34.8
240 VAC
2.9
17.4
277 VAC
2.4
14.4
TB 2
LO
5
MED
4
HI
3
2
NO CONNECTION
L1
1
TB 1
24 VAC 1
4
24 VAC 2
3
REMOTE PROBE 2
2
REMOTE PROBE 1
1
TB 3
COOL
2
0 - 10 VDC
HEAT
1
0 - 10 VDC
© COPYRIGHT PECO, INC. ALL RIGHTS RESERVED
THERMOSTATIC
PILOT
OUTPUTS
AMPS
DUTY
NA
24 VA
0 - 10 VDC
6.0
125 VA
NA
5.0
125 VA
NA
4.2
125 VA
NA
L2 OR
FAN NEUTRAL
FAN
24 VAC
XFMR
TA167 / TB167
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.
To avoid potential fire and/ or explosion do not use in potentially
flammable or explosive atmospheres.
Retain 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.
Use Copper wire only, insulate or wire nut all un-used leads.
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.
TERMINAL BLOCK
TB3
REMOVE JP1
WHEN USING A
REMOTE SENSOR
1 2
5
4
0-10 VDC THERMOSTAT
WARNING
CAUTION
TERMINAL BLOCK
TB2
TERMINAL BLOCK
TB1
TB1
1 2 3
4
3
2
1
P/N 68817 3220-1465 Rev 0
INSTALL COVER
LOCKING SCREW
Page 1
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