This ensures the unit does not attempt to recycle under unsafe conditions

A yellow flame often indicates a dirty pilot orifice or inadequate primary air

and VHE Series gas-fired boilers

ensure the trap is primed during startup and consider installing a pipeline strainer upstream to protect the precision-lapped internals from scale and debris

Robertshaw 4200-026 Gas Thermostat Freon This ensures the unit doesThe Robertshaw 4200 026 is a heavy duty, high capacity commercial gas thermostat engineered for precise thermal regulation in demanding culinary environments. Designed as part of the versatile Uni Kit series, this FDTO gas thermostat features a 3 8" pipe inlet and outlet with a 4 way mounting configuration, providing the field flexibility essential for fast paced service calls. This model operates within a 200F to 550F temperature range, making it the