It has thermostat knob
Hayward FDXLGSV0003 Natural Gas Valve Replace FDXLGSV0001 for Universal H-Series
Seats for dependable Sealing
Pump Application: XP2
Hayward FDXLICB1930 FD Integrated Control Board for H-Series Pool Heater It has thermostat knobThis FD integrated control board kit is designed to use with Hayward Universal H Series Low NOx pool heater models H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP. Features: FD integrated control board kit Fits hayward universal h series low nox pool heater models H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP Also fits hayward universal h series low nox pool heater models H300FDN,