Johnson Controls V47BD-3 Water Valve Freon System Integrity: Prevents heat exchanger
Yard notes & kiln story
Description
Johnson Controls V47BD 3 Water Valve Freon System Integrity: Prevents heat exchanger System Integrity: Prevents heat exchanger cracking by enforcing strict thermal boundaries It features a high sensitivity fan proving switch (diaphragm style pressure switch) and a specialized electronic post purge timer that clears combustion gases from the flue after the heating cycle ends