TH170 HEAT PUMP THERMOSTAT
READ THESE INSTRUCTIONS CAREFULLY BE-
FORE 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 thermo-
stat operating voltage.
Before installing this control, the Voltage Selection
Switch must be placed in the correct position. See
instructions.
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 engi-
neered system whose specifications and perfor
-
mance characteristics are not designed or controlled
by PECO. You must review your application and
national and local codes to assure that your installa-
tion will be functional and safe.
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WARNING
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 configuration jumpers. You may need
to reconfigure this thermostat for your application.
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CAUTION
Preinstallation Considerations
Thermostat Location – The thermostat should be used indoors only. It
should be mounted on an inner wall 48” from the floor, in a location with
freely circulating air, and where it will be responsive to changes in room
temperature. Avoid mounting near heat generating appliances (i.e. TV,
heater, refrigerator), or in direct sunlight.
Humidifiers – The humidify output connects directly to 24VAC oper
-
ated humidifiers. No other connection or interlock is required. Several
installer-selectable operating modes are available as described in the
Humidity Control Operation Section.
Dehumidifiers – The dehumidify output connects to the dehumidify input
on variable–speed furnaces and fan coils. Additional dehumidification is
done by controlling the compressor. Several installer-selectable operat
-
ing modes are available as described in the Humidity Control Operation
Section.
Outdoor Temperature Sensor – The use of an outdoor temperature in
conjunction with the TH170 will improve the performance and increase
the number of humidity control modes available to the installer. Run two
wires from the TH170 to an outdoor location. The outdoor sensor can be
mounted to the outdoor unit and existing control wires may be used for
its connection.
aPPliCations and features
Heat Pump Thermostat for 24 VAC Applications
Up to 3 Heat and 2 Cool Stages
System Selection: Off-Heat-Cool-Auto-Setback-Aux Heat
Up to 2 Fan Stages: On-Auto (1 fan), Hi-Low-Auto (2 fans)
Dehumidification/Humidity Control*
Setback and Off-Override Capable
Also Configurable With
Outdoor Air Sensors
Remote Probes
Occupancy Control Systems
Outside Air Ecomomizer (Damper Control)
*Available on the TH170-002 model only.
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sPeCifiCations
Temperature Set Point Range
50 to 90°F / 10 to 32°C
RH Set Point Range
Humidity: 20-45% RH, Dehumidification: 50-90% RH
Electrical Rating
24 VAC Input, 24 VAC Output, Hardwired
Memory – Back-Up
EEPROM, No batteries required, Stores settings for unlimited time.
Mounting
Installs on standard 4” x 4” device box with a 2” x 4” horizontal mud ring
Humidity Accuracy
+/- 3% RH
Storage Temperature Range
-20 to 130°F
Physical Dimensions
4.4”H x 5.8”W x 1.1”D
Agency Approvals
UL, UL Canada
© COPYRIGHT 2008 PECO, INC. ALL RIGHTS RESERVED.
P/N 69290 3220-2088 REV 0 PAGE 1