Turn the thermostat to "OFF" and wait five minutes for any accumulated gas to escape.
Because this model is entirely mechanical, adjustments are physical rather than digital. : Invensys Thermostat Manual Model Fd
Adjust the pilot flame to a height of approximately 1/2 inch using the adjustment screw (marked 'P'). : Turn the thermostat to "OFF" and wait five
: Available in single-valve (normal throttle action) or dual-valve (snap throttle action for high-capacity needs). Invensys Thermostat Manual Model Fd
: For digital models, prying the front cover off and removing batteries for 5 minutes often performs a hard reset.
: Two side screws allow for manual adjustment of the pilot (P) and bypass (B) functions. Operating & Calibration Instructions
: Ensure the red button is held down for at least one minute after lighting to engage the thermocouple.
