Hayward Universal H-Series Natural Gas Heater 250K BTU | W3H250FDN Sonar Retro Bulbs High-level safety/compatibility notes only: Always

High-level safety/compatibility notes only: Always shut off power to the pump and relieve system pressure before servicing or installing

T100M or RC2000M Series mechanisms

and that the base is level and structurally sound

These gears were created to be a part of the drive system

ensuring compatibility and long-term use

Hayward Universal H-Series Natural Gas Heater 250K BTU | W3H250FDN Sonar Retro Bulbs High-level safety/compatibility notes only: AlwaysThe Universal H Series is an energy efficient, high performance, installation adaptable commitment to the pool service professional. Features: Standard cupro nickel heat exchanger Excellent salt water and chemical corrosion resistance Exclusive "Totally Managed" cupro nickel heat exchanger water flow The same water velocity through all tubes for faster heating Patented header by pass design Up to 18 percent savings by reducing pump run time Common