Features & Benefits

• Immersion Type Controllers that Combine High Limit Protection with Low Limit and Circulator Control in Forced Hydronic Heating Systems, Including Domestic Hot Water Service
• Provide Multi-Zone Control by Using a Separate Circulator and R845 Relay for Each Zone
• Include Diaphragm Power Head and Micro Switch Assembly that Respond to Temperature Changes in Boiler Water, Mount Directly to Boiler
• Select Models Include Large Transformers and Extra Terminals for Supplying Power to Low Voltage Zone Valves
• Tradeline Models Include Tube of Heat Conductive Compound and Range Stops

Specifications

• Type: 3/8 Inch Diameter x 2-7/8 Inch Length Sensing Element, Direct Horizontal Well Immersion, Triple, High Limit
• Temperature Range: 130 to 240 Deg F (High Limit), 110 to 220 Deg F (Low Limit)
• Maximum Temperature Rating: 150 Deg F (Switch), 265 Deg F (Sensing Element)
• Contact Rating: 7.4 Amp at 120 Volt AC/3.7 Amp at 240 Volt AC (Full Load), 44.4 Amp at 120 Volt AC/22.2 Amp at 240 Volt AC (Locked Rotor) Burner/Circulator
• Contact Configuration: SPST
• Connection Type: 1/2 Inch Conduit, Quick Connect/Screw
• Application: Hydronic Heating System
• Approval: UL, CSA
• Overall Dimension 6-1/8 Inch Width x 3-1/16 Inch Depth x 4-3/8 Inch Height
• Differential Temperature Rating 10 Deg F Fixed (High Limit), 10 to 25 Deg F Adjustable (Low Limit)
• Pressure Rating 200 PSI (Outside of Immersion Well), 100 PSI (Capsule if Inserted Directly)
• Insulation Depth 1-1/2 Inch
• Humidity Range 0 to 95 Percent Relative, Non-Condensing