1. Product Overview
The WARREN W6K0802B is an 8 kW electric heat kit designed for integration into HVAC systems. This unit operates on 208/240V, 60Hz, single-phase power and includes integrated circuit breakers for protection. It is manufactured in the USA and is intended to provide supplemental or primary heating as part of a complete heating and cooling system.
Key features include:
- 8 kW heating capacity
- Integrated circuit breakers
- 208/240V, 60Hz, 1 Phase electrical compatibility
- Compact dimensions for easy installation
2. Important Safety Information
WARNING: Installation and servicing of this electric heat kit must be performed by qualified, licensed HVAC technicians or electricians. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or death. Read these instructions thoroughly before installing or servicing this equipment.
Observe all local codes and ordinances. In the absence of local codes, follow the National Electrical Code (NEC) and NFPA 70. Always disconnect power at the main service panel before installing or servicing this unit.
California Proposition 65 Warning: Cancer and Reproductive Harm - P65Warnings.ca.gov
Electrical Connection: Use only with copper conductors. Ensure all wiring connections are secure and comply with electrical codes.
3. Components and Features

Figure 1: Overall view of the W6K0802B Electric Heat Kit, showcasing its compact design with heating elements and electrical components.

Figure 2: Side view illustrating the multiple coiled heating elements responsible for generating heat.

Figure 3: Top view indicating the designated air flow direction and internal wiring connections. A 'QC 3' sticker is visible, indicating quality control inspection.

Figure 4: Detailed view of the product identification label, confirming model W6K0802B, 240V, 7680W, and serial number 307363-002-002.

Figure 5: The product as shipped, contained within its manufacturer's cardboard box.

Figure 6: Close-up of the box label, displaying the catalog number 6HK16500806A and model W6K0802B.
4. Installation Instructions
This electric heat kit is designed for integration into compatible HVAC air handling units. Professional installation by a licensed technician is strongly recommended to ensure proper function, safety, and compliance with all applicable codes.
4.1 Pre-Installation Checks
- Verify that the voltage and phase of the electrical supply match the specifications of the heat kit (208/240V, 60Hz, 1 Phase).
- Ensure the air handler is compatible with the dimensions of the heat kit (H-5", W-10", L-20").
- Confirm that the existing wiring is suitable for the amperage draw of an 8 kW heater and that only copper conductors are used.
4.2 Mounting and Airflow
Mount the heat kit securely within the designated compartment of the air handler. Pay close attention to the 'AIR FLOW' indicators on the unit (refer to Figure 3) to ensure correct orientation. Incorrect airflow can lead to overheating and damage.
4.3 Electrical Connections
- ALWAYS DISCONNECT POWER at the main electrical panel before making any connections.
- Connect the heat kit to the appropriate electrical supply terminals within the air handler, following the wiring diagram provided with your air handler and the heat kit.
- Ensure all connections are tight and secure.
- The integrated circuit breakers provide overcurrent protection for the heat kit. Do not bypass or alter these breakers.
5. Operating Your Electric Heat Kit
Once properly installed and wired, the electric heat kit operates in conjunction with your HVAC system's thermostat. When the thermostat calls for heat, the air handler's fan will activate, and the heat kit's elements will energize to provide warm air.
- Set your thermostat to the desired temperature in heating mode.
- The heat kit will cycle on and off as needed to maintain the set temperature.
- Ensure the air filter in your air handler is clean to allow for proper airflow, which is crucial for efficient and safe operation of the heat kit.
6. Maintenance
The WARREN W6K0802B electric heat kit requires minimal maintenance. However, periodic inspection by a qualified technician is recommended to ensure continued safe and efficient operation.
- Annual Inspection: Have a qualified technician inspect the heating elements, wiring, and electrical connections for any signs of wear, corrosion, or damage.
- Airflow: Regularly check and replace the air filter in your air handler as per the air handler manufacturer's recommendations. Restricted airflow can cause the heat kit to overheat and trip safety devices.
- Cleaning: Ensure the area around the heat kit within the air handler is free from dust and debris.
7. Troubleshooting
If you experience issues with your electric heat kit, consider the following basic troubleshooting steps. For complex problems, always contact a qualified HVAC technician.
7.1 No Heat
- Check Thermostat: Ensure the thermostat is set to heating mode and the desired temperature is above the ambient room temperature.
- Check Circuit Breakers: Inspect the integrated circuit breakers on the heat kit and the main electrical panel for any tripped breakers. Reset if necessary. If breakers trip repeatedly, there may be an electrical fault requiring professional attention.
- Air Filter: A clogged air filter can restrict airflow, causing safety limits to trip. Check and replace the air filter.
7.2 Unit Overheating or Cycling Off Frequently
- Airflow Restriction: This is the most common cause. Check for dirty air filters, blocked return air vents, or obstructions in the ductwork.
- Safety Limits: The unit has built-in safety limits that will shut off the heating elements if temperatures become too high. If these are tripping, it indicates an underlying issue that needs professional diagnosis.
8. Technical Specifications
| Specification | Value |
|---|---|
| Model Number | W6K0802B |
| Heating Capacity | 8 kW (7680 Watts at 240V) |
| Voltage | 208/240V |
| Frequency | 60Hz |
| Phase | 1 Phase |
| Amperage (at 240V) | 32.0 Amps |
| Product Dimensions (H x W x L) | 5" x 10" x 20" (approx. 22 x 12 x 6 inches shipping) |
| Item Weight | 8 pounds |
| Serial Number (example) | 307363-002-002 |
| Catalog Number (example) | 6HK16500806A |
| Date First Available | April 22, 2024 |
9. Warranty and Support
Please note that this product is being sold as new and unused with no warranty or guarantee. For technical assistance or inquiries regarding installation and operation, it is recommended to consult with a qualified HVAC professional or the original equipment manufacturer of your air handling unit.





