Portable Fan Speed ControlThe K-Kontrol line voltage thermostat guide is your go-t0 resource for effectively managing your thermostat. The K-Kontrol line voltage thermostat is designed for precise control over heating, cooling, and ventilation equipment. To ensure optimal performance, it is crucial to follow the correct operating instructions. This guide will provide you with essential steps to maximize the efficiency of your line voltage thermostat. To purchase a line voltage thermostat, click here.

K-Kontrol Line Voltage Thermostat Guide

The foundation of effective thermostat operation lies in its installation. Here are some key tips for installing your K-Kontrol line voltage thermostat:

Ideal Placement:

Greenhouse: Mount at plant height, avoiding direct sunlight.
HVAC: Place away from heat sources.
Agriculture: Avoid direct sunlight and heating elements.
Deicer: Mount on the top side of the dock for proper air temperature reading.

Position the thermostat 5-6 feet above the floor to ensure accurate temperature readings.

Avoid Extreme Conditions

To prevent inaccurate readings, avoid mounting the unit in areas exposed to direct sunlight or near equipment generating unusual heat or cold. Proper location is crucial for accurate temperature readings, allowing your thermostat to function properly.

Wiring Your K-Kontrol Thermostat

Line Voltage Tstat Wired for Heat

Most line voltage thermostats are wired for heating unless specified otherwise. Follow these steps for proper wiring:

  1. Remove the thermostat cover.
  2. Connect wires to the appropriate terminals (heating or cooling).
  3. Place the cover back on the thermostat.
  4. Connect the power supply.
  5. Tighten screws on the thermostat cover.
  6. Turn the dial to set the desired temperature.
Checking Wiring:
  • For heating mode: Turn the dial to 110°F – device should come on; turn to 30°F – device should cut off.
  • For cooling mode: Turn the dial to 110°F – device should be off; turn to 30°F – device should come on.
Switching Between Heating & Cooling:

Thermostat Wired for Cooling

  1. Disconnect the power supply.
  2. Remove the cover.
  3. Move the wire from the heating terminal to the cooling terminal for cooling mode, or vice versa for heating mode.

Configuring Your K-Kontrol Thermostat

Dial Adjustment: Set the thermostat dial to the desired temperature (e.g., 75°F for a fan to turn on at this temperature).

Functional Testing: Validate functionality by setting the dial to a lower value than the current room temperature and confirming that connected equipment activates as expected.

Troubleshooting Your K-Kontrol Thermostat

Example Line Voltage Tstat Wiring

If issues arise, here are some things to check:

Verify Power Supply: Ensure the thermostat has a stable power supply. Check the circuit breaker or fuse box.
Check Thermostat Settings: Ensure the mode and temperature settings are appropriate.
Calibrate the Thermostat: If you suspect inaccurate readings, refer to the manual for calibration instructions.
Test the Temperature Accuracy: Use an accurate thermometer to compare the temperature reading.
Inspect Sensor Placement: Ensure the thermostat’s sensor is not obstructed or covered in dust.
Check for Wiring Issues: Look for any loose connections or damaged wires.

Professional Assistance

If troubleshooting steps do not resolve the issue or if you are unsure about performing the troubleshooting yourself, it is recommended to seek professional assistance. HVAC technicians can accurately diagnose and fix complex thermostat issues.

Talk to a product specialist today!


Original equipment manufacturers & agricultural communities worldwide use temperature controls designed & manufactured by K-Kontrols. Our temperature controls are great for barns, greenhouses, livestock buildings, garages, vacation homes, construction sites & more.

Custom Options

Variety of custom options available such as temperature ranges, sensing element lengths & private branding.


K-Kontrols meet NEMA 4X, UL, cUL & NEC 457 Ag-ratings.

High Quality

We take pride in quality control & reliable operation of our components. Every switch is individually tested before it leaves the plant.

Made in the U.S.A.

Products are designed, manufactured, tested & shipped from our facilities in Eau Claire, WI to clients across the globe.