Peco TH-109 Instruction Sheet

Thermostat Instruction Sheet
Peco TH-109 Two-Stage Thermostat
For use in wet or humid environments where water tightness is required

Parts List

Peco Two Stage Manual Thermostat (P/N: TH-109)
NOTE: All material used for installation should be approved, suitable and
installed properly for the intended application.

TH-109 Specifications

Range: 40°-100°F (4°-38°C) heat/cool
Max Ambient Temp: 140°F (60°C)
Differential: 3°F Fixed
Operation: Two-Stage
Electrical Rating: 24-277 VAC
Contact Action: Opens on rise.
Dimensions: 7.34" x 3.46" x 4.89"
Additional Features: Two piece NEMA 4X plastic enclosure
with all exposed parts made of stainless steel, type 300 series
stainless coiled temperature sensing bulb, two SPDT switches,
UL listed and CSA certified.

Installation Instructions

1. Remove cover of thermostat from base.
2. Disconnect the power source.
3. Locate in an area with good air circulation (no outside walls).
4. Install the thermostat approximately 5 feet above floor level.
5. Replace the cover.
To avoid electrical shock or damage to
equipment, disconnect all power before
installing or servicing.
To prevent overheating or fire, use this control
as an operating or regulating thermostat.
ALWAYS USE A BACKUP CONTROL OR
ALARM if a control failure could cause the
controlled appliance to overheat or could cause a fire.
© 2016 Detroit Radiant Products Company
WARNING
WARNING
Figure 1 •
TH-109 Thermostat
Ensure the 1/2-inch conduit opening on the end of
the enclosure is installed downward. With cover and
NEMA 4X conduit fittings (not included) properly
installed, the enclosure will meet NEMA 4X rain-
tight ratings. NOTE: A drip-loop should be provided
to prevent water and other liquids from entering the
thermostat housing. Failure to use suitable watertight
connections could result in thermostat failure.
Figure 2 •
TH-109 Thermostat Wiring
To unit
Red
Black
Violet
Pink
Brown
Blue
Green
Power
LO HI
Reference the heater
specific installation
and operation manual
for field wiring.
LSH045-1c-02/16 (DRP)