Description
The McDonnell & Miller 194-7B (Part No. 167200) is a combination low water cut off and pump controller engineered for reliable protection and automatic pump management on steam boiler systems. By integrating two critical functions into a single compact unit, the 194-7B simplifies installation and reduces the number of components required on the boiler, saving both time and cost.
The built-in potentiometer switch allows field-adjustable differential settings, giving technicians precise control over pump-on and pump-off water levels to match the specific demands of the system. Rated for steam boilers with a maximum working pressure of 250 PSI, this control is well-suited for a wide range of commercial and industrial steam heating applications.
Key Features
- Combination low water cut off and pump controller in a single unit
- Potentiometer switch for adjustable differential control
- Rated for steam boilers up to 250 PSI maximum working pressure
- Simplifies boiler piping and reduces component count
- Designed for commercial and industrial steam heating systems
- Part Number: 167200
- SKU: 194-7B
How It Works
The 194-7B uses a float mechanism to continuously monitor boiler water level. If the water level drops to an unsafe low point, the low water cut off function interrupts the burner circuit, protecting the boiler from dangerous dry-firing conditions. Simultaneously, the pump controller circuit activates the feed pump to restore water to the proper operating level. The potentiometer switch enables technicians to fine-tune the differential between pump-on and pump-off set points without replacing components.
Specifications
- Model: 194-7B
- Part Number: 167200
- Brand: McDonnell & Miller (Xylem)
- Function: Combination Low Water Cut Off & Pump Controller
- Switch Type: Potentiometer
- Maximum Working Pressure: 250 PSI
- Application: Steam Boilers
Application
Ideal for commercial and industrial steam boiler installations where both low water protection and automatic pump control are required. The 194-7B is a trusted solution from McDonnell & Miller, a brand with decades of proven performance in hydronic and steam boiler safety controls.
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