Description
The McDonnell & Miller 247-2 (Part Number 133800) is a heavy-duty mechanical water feeder engineered for reliable protection and automatic water management on both steam and hot water boilers. Combining a cold water feed function with a low water cut off in a single, compact unit, the 247-2 eliminates the need for separate components and simplifies installation and maintenance.
Key Features
- Dual-function design: integrates cold water feed and low water cut off in one assembly
- Two snap-acting SPDT (Single-Pole Double-Throw) switches for reliable, positive electrical switching action
- Compatible with both steam and hot water boiler systems
- Mechanical float-operated design for dependable, low-maintenance performance
- Automatically feeds cold water to maintain safe boiler water levels
- Low water cut off function shuts down burner operation when water drops below a safe threshold, protecting the boiler from dry-fire damage
- Part Number: 133800
Product Benefits
- Reduces installation complexity by combining two critical boiler safety functions into one unit
- Snap-acting SPDT switches provide clean, reliable switching for burner control circuits
- Helps extend boiler service life by preventing low-water dry-fire conditions
- Suitable for residential and light commercial steam and hot water heating systems
- Trusted McDonnell & Miller engineering, backed by Xylem’s global HVAC expertise
Applications
- Steam boilers requiring automatic water feed and low water protection
- Hot water boilers requiring low water cut off with cold water make-up feed
- Residential and commercial hydronic and steam heating systems
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