Potter Electric Signal Company: St. Louis Missouri

News / LTR- Residential Low Water Cutoff

The Residential Low Water Cutoff (LTR) is a microprocessor based low water cutoff for detecting the presence to water in a boiler. The LTR 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 LTR functions longer without requiring probe cleaning, and it functions normally under nonideal installation conditions. The LTR is designed for use with hot water boilers and hot water heating boilers.

Features

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

Maximum Probe Ratings: Hot water only 160 psi (11.2kg/cm2) at 250°F (121°C)

Probe Sensitivity: 20K Ohms. Extended operation to 40K Ohms.

Ambient Temperature: 32°F to120°F (0°C to 49°C)

Enclosure Rating: NEMA 1 for indoor use only

Input Power: 1.5 VA @ 24 VAC supplied by a Class 2 power source

Output Contact: Form B Relay, normally closed (water detected) 5A @ 24 VAC maximum load, 50 VA @ 24 VAC switching

Reset: Automatic reset when water level returns to safe level

Testing: Integtrated test switch for testing safety shutdown

Product available through Taco

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