Potter Electric Signal Company: St. Louis Missouri

News / LTB-Board Style Low Water Cutoff

The Board Style Low Water Cutoff (LTB) is an advanced, microprocessor based low water cutoff for detecting the presence of water in a boiler. The LTB uses advanced signal processing to identify when the probe signal levels have decreased due to possible fouling. These advanced technologies permit extended operation for probe impedance up to 40K Ohms. The LTB functions longer without requiring probe cleaning, and it functions normally under nonideal installation conditions. The LTB is designed for use with hot water boilers and hot water heating boilers.

Features
Listings/Approvals:
UL GUIDE (MBPR2) for Limit Controls per UL Standard 353 Limit Controls Component
UL GUIDE (MBPR8) Controls, Limit Certified for Canada Component per CSA Standard C22.2

Delays: 3 Second Delay on Break, (DOB) 1/2 Second Delay on Make, (DOM)

Probes: Sold Separately. All Taco probe styles are compatible with LTB

Ambient Temperature: 40°F to 150°F (40°C to 66°C)

Probe Sensitivity: Extended operation to 40K Ohms

Open Collector Outputs: Maximum current 50 mA @ 5 VDC 24 VDC

Enclosure: None, PCB assembly only. For indoor use only. Mounting holes to permit standoff mounting on customer supplied plate and housing.

Reset: Configurable as automatic or manual reset style. When a normally closed switch is connected, device will be a manual reset device that looks for opening of reset switch. The LTB is fully compliant with CSD-1 requirements.

Testing: Externally supplied test switch can be wired in series with probe connection to open probe circuit simulating a low water condition.

Product available through Taco

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