The Star E 21 is a high-efficiency wet-rotor circulator with EC Motor-driven technology-designed unit with differential temperature control that adjusts to the system demand to maintain the best heat transfer possible.

This four-speed circulator also has three HD modes of operation for proportional control as well as an Auto mode where the pump will automatically adjust to the system resistance to reach its best efficiency point with an LED display and adjustment buttons for easy set-up

• High-efficiency, EC Motor-driven technology
• Differential temperature control
• Auto mode: Automatically adjusts to the system demand
• Three HD modes –proportional control
• Four speed control
• LED display and adjustment buttons for easy set-up and changes

Application

• Heating and cooling
• Industrial Circulation
• Water/Glycol concentrations up to 50%
• Solar
• Geothermal

Equipment/function

• High-efficiency, EC Motor-driven technology
• Differential temperature control
• Auto mode: Automatically adjusts to the system demand
• Three HD modes –proportional control
• Four speed control
• LED display and adjustment buttons for easy set-up and changes

Technical data

• Fluid temperature range: 36°F to 230°F
• Maximum operating pressure: 145 PSI (10 Bar)
• Cast Iron HT200 pump body
• Composite PA66+30%GF impeller
• Ceramic shaft

Scope of delivery

• Plastic Composite Check Valves (Included but optional)