How to add 115V/220V AC Chamber heater to Creality K1 Series or any klipper printer

This guide provides a safety-focused method for installing a 115V/220V AC chamber heater on a Creality K1 series or any Klipper-based printer. The design emphasizes multi-layered safety, including a relay that ensures the heater only activates if the fan is operational, a normally closed thermostat to cut power at 75°C, and an inner sensor to shut down Klipper if the element exceeds 125°C. An AC voltage fuse is also included for protection.

Practical uses include maintaining specific chamber temperatures for advanced printing materials. The author notes they typically operate up to 60°C, but users must configure sensors and temperature settings in the provided CFG file to suit their specific requirements.

Included parts/components required:

• Qibi Plus 4 115/220V Chamber Heater (or a custom Nylon heater)
• BTT SKR Pico, Mellow Micro 4, or compatible printer motherboard pins
• 24V 30A One Channel Relay Module
• 40A Heat Sink SSR (Solid State Relay)
• Bimetal Temperature Control Switch Thermostat 75°C N.C (KSD9700)
• NTC 100K 3950 Thermistor
• Inline Screw Type Fuse Holder with Fast Blow Glass Fuses
• 14-16 gauge wire

Assembly guidance:
Users must disconnect the printer from AC power before proceeding to avoid serious injury. The heater fan should remain active until the chamber sensor reaches 40°C to ensure the element cools down. For Klipper integration, the [heater_generic chamber_heater] section must be present in printer.cfg. In Orca Slicer, users should select 'Chamber temperature' and enable 'Activate temperature control.' The author does not specify the physical placement of the heater; users must select a suitable location.

AI-assisted English description reviewed against the CC0 source. Original content and author attribution retained; photographs from the author's Printables model gallery.