Field Controls 1170004 Switch R-134A The McDonnell & Miller 47-2-M

The McDonnell & Miller 47-2-M (Part Number 132900) is a heavy-duty mechanical water feeder and low water cut-off combination engineered for commercial and residential steam boiler maintenance

Manufactured to original equipment specifications for reliable installation

typically at the 10 or 2 o'clock position

55" length against existing fan wheels and bearings to ensure a seamless mechanical fit and precise alignment within the drive cabinet

Field Controls 1170004 Switch R-134A The McDonnell & Miller 47-2-MThe Field Controls 1170004 (FTS 4) is a critical manual reset thermal safety switch designed to protect gas fired furnaces, boilers, and water heaters from hazardous flue gas spillage. This SPST thermal switch monitors temperatures at the draft hood or barometric control, effectively de energizing the burner circuit if hot gases escape due to a blocked flue or inadequate chimney draft. Engineered for heavy duty applications, it features a 140F fixed