IO Hvac Controls iO-DFK Dual Fuel Kit R-22 Ensure the actuator stroke matches

Ensure the actuator stroke matches the valve travel for full shut-off

If switching to R407C

This part is a direct replacement for Lennox 89M77

Key Benefits Dual-Voltage Versatility: Supports 230V or 460V 3-phase power

This Single Pole Single Throw (SPST) flame rollout sensor is engineered to interrupt the heating circuit when it detects excessive temperatures

IO Hvac Controls iO-DFK Dual Fuel Kit R-22 Ensure the actuator stroke matchesThe iO DFK Dual Fuel Kit provides seamless management for hybrid heating systems combining an electric heat pump with a fossil fuel furnace. Engineered for simplified dual fuel heat pump control, this kit handles up to 4 stages of heating and 2 stages of cooling. It utilizes professional quiet relay technology to prevent the heat pump and furnace from operating simultaneously, effectively protecting the compressor. The included iO DFK ODT outdoor