The Reznor 257975 Control Board is a critical direct spark ignition (DSI) control designed for heavy-duty HVAC unit heaters and professional-grade gas-fired heating systems
allowing for a 1-pipe steam thermostatic conversion without extensive repiping
Tool-Free Access: Designed for straightforward mounting over existing TK-series thermostats to streamline commercial HVAC maintenance
The International Environmental 71159909 Actuator is a professional-grade 2-position electric actuator engineered for precise flow control in fan coil unit (FCU) applications
This 250-foot roll of 3/8" OD plenum rated pneumatic tubing is manufactured from a flame-retardant
Modine 5H0719330001 Gas Valve Freon The Reznor 257975 Control BoardThe Modine 5H0719330001 Gas Valve is the direct OEM replacement for 5H71933 1, engineered specifically for Modine unit heaters, furnaces, and boilers. As a 24V natural gas valve, it operates with a 3. 5" WC manifold pressure setting to ensure stable combustion and precise fuel regulation. This 1 2" NPT gas valve features a standard 1 2 inch inlet and outlet, making it a drop in Modine replacement part for technicians performing maintenance on Hot Dawg
