1. Introduction
This manual provides essential information for the safe and efficient operation of your TPI TSH20J Series Fan Forced Kick Space Heater. Please read all instructions carefully before installation and use, and retain this manual for future reference.
1.1 Safety Information
WARNING: To reduce the risk of fire, electric shock, or injury, observe the following:
- Read all instructions before installing or using this heater.
- This heater is hot when in use. To avoid burns, do not let bare skin touch hot surfaces.
- Extreme caution is necessary when any heater is used by or near children or invalids and whenever the heater is left operating and unattended.
- Do not operate any heater with a damaged cord or plug or after the heater malfunctions, has been dropped or damaged in any manner. Return heater to authorized service facility for examination, electrical or mechanical adjustment, or repair.
- Do not use outdoors.
- To disconnect heater, turn controls to off, then remove plug from outlet.
- Do not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause an electric shock or fire, or damage the heater.
- To prevent a possible fire, do not block air intakes or exhaust in any manner.
- A heater has hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint, or flammable vapors or liquids are used or stored.
- Use this heater only as described in this manual. Any other use not recommended by the manufacturer may cause fire, electric shock, or injury to persons.
- Always connect to properly grounded outlets.
2. Product Overview
The TPI TSH20J Series is a fan-forced kick space heater designed for efficient and targeted heating in various indoor spaces. Its compact design allows for discreet installation.
2.1 Components
The TSH20J heater consists of a durable metal housing, heating elements, a fan for forced air circulation, and electrical connections. It is designed for installation in kick space areas, such as under cabinets.

Figure 1: Front view of the TPI TSH20J Series Kick Space Heater. This image shows the heater's compact black housing with the front grille where air is expelled.

Figure 2: Rear view of the TPI TSH20J Series Kick Space Heater. This image displays the back of the unit, including the fan, heating elements, and electrical connection points.
2.2 Key Features
- Compact Design: Ideal for installation in tight spaces, such as under cabinets or in toe-kick areas.
- Fan-Forced Heat: Ensures rapid and even distribution of warmth.
- Durable Construction: Built for longevity and reliable performance.
- Manual Thermostat: Allows for direct control over the heating output.
- Versatile Application: Suitable for various indoor residential and commercial settings.
3. Setup and Installation
Installation of the TPI TSH20J Series heater requires electrical wiring. It is strongly recommended that installation be performed by a qualified electrician in accordance with all local and national electrical codes.
3.1 General Installation Guidelines
- Power Disconnection: Ensure that the main power supply to the installation area is turned off at the circuit breaker before beginning any work.
- Location Selection: Choose a suitable kick space location that allows for proper air circulation and is free from obstructions. Ensure the heater is not installed directly below an electrical outlet.
- Mounting: Secure the heater firmly within the kick space opening using appropriate fasteners. Refer to the product dimensions for precise fitting.
- Electrical Connection: Connect the heater to the appropriate power supply (115V or 230V, depending on the model and wiring harness used) following the wiring diagram provided with the unit and all applicable electrical codes. Ensure all connections are secure and properly insulated.
- Thermostat Connection: If using an external thermostat, connect it according to the thermostat's instructions and the heater's wiring diagram. The TSH20J features a manual thermostat for direct control.
- Final Check: After installation, double-check all connections and ensure no wires are pinched or exposed. Restore power and test the unit.
Note: Specific wiring diagrams and detailed installation steps are typically included with the physical product. Always consult these documents and a professional electrician.
4. Operating Instructions
The TPI TSH20J Series heater is equipped with a manual thermostat for temperature control.
4.1 Setting the Temperature
- Power On: Ensure the heater is properly installed and connected to a power source. Turn on the power at the circuit breaker.
- Adjust Thermostat: Locate the manual thermostat control on the unit. Turn the dial clockwise to increase the desired temperature setting, and counter-clockwise to decrease it.
- Heating Cycle: The heater will activate when the ambient temperature falls below the set temperature. The fan and heating elements will operate until the room reaches the desired temperature, then cycle off. It will reactivate when the temperature drops again.
- Turning Off: To turn off the heater, rotate the thermostat dial to its lowest setting or turn off the power at the circuit breaker.
Note: The fan may continue to run for a short period after the heating elements turn off to dissipate residual heat. This is normal operation.
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your heater. Always disconnect power before performing any maintenance.
5.1 Cleaning
- Exterior Cleaning: Wipe the exterior surfaces of the heater with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Grille Cleaning: Use a vacuum cleaner with a brush attachment to remove dust and debris from the intake and exhaust grilles. Ensure no foreign objects are lodged within the unit.
- Internal Cleaning: For internal cleaning, it is recommended to consult a qualified service technician. Do not attempt to disassemble the unit yourself.
5.2 Storage
If the heater will not be used for an extended period, store it in a clean, dry location, protected from dust and moisture.
6. Troubleshooting
Before contacting customer support, review the following common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not turn on. |
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| Insufficient heat output. |
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| Unusual noise during operation. |
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If the problem persists after attempting these solutions, contact TPI customer support or a qualified service technician.
7. Specifications
Below are the general specifications for the TPI TSH20J Series Fan Forced Kick Space Heater.
- Brand: TPI
- Model Number: TSH20J
- Product Dimensions: 22 x 11.5 x 3.5 inches
- Item Weight: 14.6 Pounds
- Special Feature: Manual Thermostat
- Color: Black
- Form Factor: Compact
- Indoor/Outdoor Usage: Indoor
- Manufacturer: TPI

Figure 3: Dimensions of the TPI TSH20J Series Kick Space Heater, showing length (22"), width (11.5"), and height (3.5").
8. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product at the time of purchase or visit the official TPI website. TPI Corporation has been a manufacturer of quality heating products since 1950.
For further assistance, please contact TPI customer service.





