Description
Product Overview
The Xylem-McDonnell & Miller 750-HW-MT-120 is a 120VAC manual reset high water cut off designed to protect hot water and steam boilers from potentially damaging high-water conditions. Engineered for reliability and safety, this control automatically shuts down boiler operation when water levels rise above the safe threshold, preventing flooding, equipment damage, and hazardous operating conditions. The integrated manual reset function ensures that the system cannot restart until a qualified technician has inspected and cleared the fault — adding a critical layer of safety to any boiler installation.
Key Features
- 120VAC operating voltage for compatibility with standard boiler control circuits
- Manual reset design requires deliberate operator intervention before the boiler can resume operation after a high-water event
- Built-in test switch allows technicians to verify proper operation without simulating an actual high-water condition
- Compatible with both hot water and steam boiler systems
- Reliable float-based sensing mechanism for accurate water level detection
- Durable construction suitable for demanding commercial and residential boiler room environments
- Part Number: 176236
Why Manual Reset?
Unlike automatic reset controls, the manual reset feature on the 750-HW-MT-120 ensures that every high-water fault is acknowledged and investigated before the boiler is returned to service. This protects against repeated cycling through fault conditions and helps technicians identify the root cause of water level issues — whether from a failed feed valve, a malfunctioning pump, or a control anomaly.
Test Switch Advantage
The integrated test switch is an invaluable tool during commissioning, routine maintenance, and service calls. It allows technicians to confirm that the high water cut off circuit is functioning correctly and that the boiler will respond appropriately to a real high-water event — without waiting for an actual fault condition to occur.
Specifications
- Brand: Xylem-McDonnell & Miller
- Model / SKU: 750-HW-MT-120
- Part Number: 176236
- Voltage: 120VAC
- Reset Type: Manual
- Application: Hot Water and Steam Boilers
- Includes: Integrated Test Switch
Applications
- Residential and commercial hot water boilers
- Steam heating boiler systems
- Hydronic heating systems requiring high-water protection
- New boiler installations and boiler control upgrades
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