: Two side screws allow for manual adjustment of the pilot (P) and bypass (B) functions. Operating & Calibration Instructions
The bypass port maintains a minimum flame even when the main valve is closed. Invensys Thermostat Manual Model Fd
Loosen the screws on the dial knob, manually set the knob to the actual measured temperature of the oven, and retighten the screws to align the dial. : Two side screws allow for manual adjustment
Push and hold the red button fully in, then light the pilot. Push and hold the red button fully in, then light the pilot
For detailed installation diagrams, you can refer to the Robertshaw VC4200 Commercial Installation Guide or the Invensys Heating and Cooling Basics Manual .
To adjust: light the main burner and set the dial to 300°F. Once the temperature is constant, turn the dial back to the lowest setting.
: Features "In" (incoming supply) and "Out" (main burner supply) ports.